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ADMIN Admin

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bsn@univ-msila.dz

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  • Informatics Department
  • Faculty of Mathematics and Informatics
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About Me

Education

Bac. in lycée sahraoui zoughlami

Research Domains

A Integence Informatique

  • 11-11-2019

  • Bac

    -------------------------------------------------
    lycée sahraoui zoughlami
  • 2021-09-18 00:00:00

  • ADMIN Admin birthday

  • 2025-02-11
  • 2025-02-11

    تعزيز الابتكار وريادة الأعمال من خلال التعليم الريادي في الوسط الجامعي

    تهدف الدراسة الى محاولة اكتشاف الدور الذي يلعبه التعليم الريادي في غرس الابتكار وريادة الاعمال في الوسط الجامعي، حيث تم الاعتماد على المنهج الوصفي من خلال دراسة التعليم الريادي ثم ريادة الاعمال والابتكار لنصل الى العلاقة بين التعليم الريادي وريادة الاعمال في البيئة الجامعية. تم التوصل الى ان التعليم الريادي له دور فعال في بث وغرس روح الابتكار وريادة الاعمال في الطلبة، ودعم حاضنات الاعمال وكفاءة هيئات التدريس لها الدور الكبير في إخراج رواد أعمال أصحاب مشاريع ناشئة ناجحة.

    Citation

    semia DEKKACHE , ADMIN Admin , ADMIN Admin , ,(2025-02-11), تعزيز الابتكار وريادة الأعمال من خلال التعليم الريادي في الوسط الجامعي,الابتكار وريادة الأعمال:دور حاضنات الأعمال الجامعية في دعم المشاريغ الناشئة,جامعة المسيلة

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  • 2025-02-11
  • 2025-02-11

    تعزيز الابتكار وريادة الأعمال من خلال التعليم الريادي في الوسط الجامعي

    تهدف الدراسة الى محاولة اكتشاف الدور الذي يلعبه التعليم الريادي في غرس الابتكار وريادة الاعمال في الوسط الجامعي، حيث تم الاعتماد على المنهج الوصفي من خلال دراسة التعليم الريادي ثم ريادة الاعمال والابتكار لنصل الى العلاقة بين التعليم الريادي وريادة الاعمال في البيئة الجامعية. تم التوصل الى ان التعليم الريادي له دور فعال في بث وغرس روح الابتكار وريادة الاعمال في الطلبة، ودعم حاضنات الاعمال وكفاءة هيئات التدريس لها الدور الكبير في إخراج رواد أعمال أصحاب مشاريع ناشئة ناجحة.

    Citation

    semia DEKKACHE , ADMIN Admin , ADMIN Admin , ,(2025-02-11), تعزيز الابتكار وريادة الأعمال من خلال التعليم الريادي في الوسط الجامعي,الابتكار وريادة الأعمال:دور حاضنات الأعمال الجامعية في دعم المشاريغ الناشئة,جامعة المسيلة

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  • 2025-02-02
  • 2025-02-02

    الحسدنة

    "يمكن أن نجمل الجسدنة في تنضد المفاهيم في النظام المفهومي وفي اللغة بالاستتباع على أساس بعض الخصائص الجسدية واشتغال الجسد في الحياة.فالجسدنة :جملة الآليات العصبية والعرفنية التي تمكننا من الإدراك ومن التنقل في ما يحيط بنا ، نشئ أنظمتنا المفهومية وطرق ا ُ وهي الآليات نفسها التي ت لتفكير عندنا واذا كان ذلك يكون من الضروري فهم النظام البصري، والنظام الحركي، والنظام العصبي بترابطاته، فهما دقيقان لكي نفهم الذهن

    Citation

    ELRABIA Boudjellal , ADMIN Admin , ,(2025-02-02), الحسدنة,اللسانيات العرفاية,جامعة المسيلة

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  • 2025-01-31
  • 2025-01-31

    Performance Analysis of Fractionalized Order PID Controller-based on Metaheuristic Optimization Algorithms for Vehicle Cruise Control Systems

    Recently, automotive manufacturers have prioritized cruise control systems and controllers, recognizing them as essential components requiring precise and adaptable designs to keep up with technological advancements. The motion of vehicles is inherently complex and variable, leading to significant non-linearity within the cruise control system (CCS). Due to this non-linearity, conventional PID controllers often perform sub optimally under varying conditions. This study introduces a fractionalized-order PID (FrOPID) controller, which incorporates an additional parameter to enhance the performance of conventional PID controllers. A comparative analysis is conducted between classical PID controllers and FrOPID controllers optimized using three metaheuristic algorithms: Harris Hawks Optimization (HHO), Genetic Algorithm (GA), and Particle Swarm Optimization (PSO). The evaluation is carried out using a linearized model of the vehicle cruise control system (VCCS). The results demonstrate that fractionalized-order PID controllers significantly outperform conventional PID controllers, particularly in terms of rise time and settling time. Among the proposed designs, the integration of HHO and FrOPID proves to be the most effective in achieving a balance between responsiveness and stability, exhibiting exceptional robustness and adaptability to variations in vehicle mass and environmental conditions. This highlights the effectiveness of fractionalized-order controllers in managing the dynamic behavior of vehicles

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Abdelhakim idir , , (2025-01-31), Performance Analysis of Fractionalized Order PID Controller-based on Metaheuristic Optimization Algorithms for Vehicle Cruise Control Systems, SCIENCE, ENGINEERING AND TECHNOLOGY, Vol:2025, Issue:1, pages:10, SCIENCE, ENGINEERING AND TECHNOLOGY

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  • 2024-12-22
  • 2024-12-22

    Study of Building -Integrated Solar Still

    Study of Building -Integrated Solar Still

    Citation

    Azzedine NAHOUI , ADMIN Admin , HADDAD Zakaria, ,(2024-12-22), Study of Building -Integrated Solar Still,The 9th Mediterranean Conference on Desalination and Water Treatment CMTDE 2024,Sol Azur Beach Congress- Hammamet- Tunisia

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  • 2024-12-18
  • 2024-12-18

    The use of opuntia ficus-indica mucilage in water treatment by coagulation-flocculation

    Mohammed Tiaiba, Belkacem Merzouk. The use of opuntia ficus-indica mucilage in water treatment by coagulation-flocculation. 1st International Seminar Towards Sustainable Agriculture: Optimizing Production Chains (1st ISTSA), 18-19 December 2024, Annaba, Algeria.

    Citation

    ADMIN Admin , BELKACEM Merzouk , Tiaiba Mohammed, ,(2024-12-18), The use of opuntia ficus-indica mucilage in water treatment by coagulation-flocculation,1st International Seminar Towards Sustainable Agriculture: Optimizing Production Chains (1st ISTSA),Annaba

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  • 2024-12-17
  • 2024-12-17

    Traitement des eaux de surface du barrage "Ain Zada" Bordj Bou Arreridj par coagulation-floculation

    Mohammed Tiaiba, Belkacem Merzouk. Traitement des eaux de surface du barrage "Ain Zada" Bordj Bou Arreridj par coagulation-floculation. 2ème Séminaire National : Matériaux pour l’Environnement et le Développement Durable (MEDD 2024), 17-18 Décembre 2024, Relizane, Algérie.

    Citation

    ADMIN Admin , BELKACEM Merzouk , Tiaiba Mohammed, ,(2024-12-17), Traitement des eaux de surface du barrage "Ain Zada" Bordj Bou Arreridj par coagulation-floculation,2ème Séminaire National : Matériaux pour l’Environnement et le Développement Durable (MEDD 2024),,Relizane

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  • 2024-12-11
  • 2024-12-11

    الهجرة غير الشرعية من منظور اجتماعي قانوني

    نهدف من وراء هذه المداخلة الى البحث حول ظاهرة الهجرة غير الشرعية وسبل معالجتها من منظور اجتماعي قانوني، من خلال تحديد المفاهيم المتعلقة بالهجرة والهجرة غير الشرعية، والتعرف على أسباب الهجرة غير الشرعية وانعكاساتها على المجتمعات والآليات القانونية لمكافحتها والحد منها.

    Citation

    Said Herzi , ADMIN Admin , Yasmina Ketfi , ,(2024-12-11), الهجرة غير الشرعية من منظور اجتماعي قانوني,الشباب الجامعي والهجرة غير الشرعية-نظرة تحليلية للواقع النفس الاجتماعي,كلية العلوم الاجتماعية بالمسيلة

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  • 2024-12-10
  • 2024-12-10

    شرطة العمران كسلطة رقابة في مجال التهيئة والتعمير

    إن موضوع التهيئة والتعمير يرتكز على جملة من القواعد والمقاييس التقنية التي تحدد من قِبل المشرع لتنظيم المجال العمراني بشكل محكم ومتناسق بما يحقق التحكم الجيد في حركية البناء ووظيفة الأراضي وبما أوجد من آليات للرقابة ومكافحة المخلفات الماسة بالتهيئة والتعمير، ومن بين هذه الأليات الرقابية شرطة العمران. وقد جاء هذا الموضوع بهدف البحث في السلطة الرقابية المخولة لشرطة العمران في مجال التهيئة والتعمير، وذلك بالتطرق لمفهوم شرطة العمران واختصاصاتها الرقابية كجهاز مختص ميدانيا لمعاينة مخالفات التعمير والتحقق من مدى مطابقتها للرخص والشهادات.

    Citation

    Mabrouk DJENIDI , ADMIN Admin , ADMIN Admin , جنيدي مبروك, ,(2024-12-10), شرطة العمران كسلطة رقابة في مجال التهيئة والتعمير,التهيئة والتعمير ومتطلبات الحكامة,جامعة بسكرة

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  • 2024-12-10
  • 2024-12-10

    شرطة العمران كسلطة رقابة في مجال التهيئة والتعمير

    إن موضوع التهيئة والتعمير يرتكز على جملة من القواعد والمقاييس التقنية التي تحدد من قِبل المشرع لتنظيم المجال العمراني بشكل محكم ومتناسق بما يحقق التحكم الجيد في حركية البناء ووظيفة الأراضي وبما أوجد من آليات للرقابة ومكافحة المخلفات الماسة بالتهيئة والتعمير، ومن بين هذه الأليات الرقابية شرطة العمران. وقد جاء هذا الموضوع بهدف البحث في السلطة الرقابية المخولة لشرطة العمران في مجال التهيئة والتعمير، وذلك بالتطرق لمفهوم شرطة العمران واختصاصاتها الرقابية كجهاز مختص ميدانيا لمعاينة مخالفات التعمير والتحقق من مدى مطابقتها للرخص والشهادات.

    Citation

    Mabrouk DJENIDI , ADMIN Admin , ADMIN Admin , جنيدي مبروك, ,(2024-12-10), شرطة العمران كسلطة رقابة في مجال التهيئة والتعمير,التهيئة والتعمير ومتطلبات الحكامة,جامعة بسكرة

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  • 2024-12-07
  • 2024-12-07

    LOCAL EXISTENCE FOR AN INTEGRO-DIFFERENTIAL DIFFUSION EQUATION WITH NONLOCAL NONLINEARITIES

    LOCAL EXISTENCE FOR AN INTEGRO-DIFFERENTIAL DIFFUSION EQUATION WITH NONLOCAL NONLINEARITIES

    Citation

    YACINE Arioua , ADMIN Admin , BENAISSI Brahim , ,(2024-12-07), LOCAL EXISTENCE FOR AN INTEGRO-DIFFERENTIAL DIFFUSION EQUATION WITH NONLOCAL NONLINEARITIES,4th National Conference of Mathematics and Applications (CNMA – 2024),University Center of Mila, Algeria

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  • 2024-12-01
  • 2024-12-01

    الوافد الغربي إلى الفكر اللغوي العربي؛ (النموذج اللساني العرفاني) من الماهية إلى التلقي العربي.

    الملخص: تهدف هذه الدراسة إلى تسليط الضوء حول المنجز اللساني العرفاني باعتباره علما لسانيا حديثا لاح نجمه في آفاق البحث اللساني اليوم، حيث نلحظ مدى اهتمام الباحثين بما جاءت به اللسانيات العرفانية من مبادئ ونظريات تخدم اللغة وتساير متطلبات العصر الحديث بنمط مغاير لما قدمته النظريات اللغوية الأخرى، ففي حين نظرت المناهج السابقة إلى اللغة من مناظير تفسيرية وتحليلية مختلفة؛ جاءت اللسانيات العرفانية لتدرس اللغة من حيث آليات اشتغال الذهن عبر ربط اللغة بالذهن والواقع، لذا سعى هذا البحث إلى إبراز اللسانيات العرفانية من حيث الماهية والأسس والمبادئ، وإظهار علاقة اللسانيات بالعلوم العرفانية وكذا علاقة اللسانيات العرفانية بالعلوم الأخرى، ثم الوقوف عند التلقي العربي لهذا المنجز اللساني الحديث. Abstract : This study aims to shed light on cognitive linguistic achievement as a modern linguistic science whose star has loomed in the horizons of linguistic research nowadays, where we note the extent of the researcher's interest in the principles and theories brought by cognitive linguistics that serve the language and keep pace with the requirements of the modern era in a manner different from what other linguistic theories have presented. While the previous approaches looked at language from different explanatory and analytical perspectives, cognitive linguistics came to study language in terms of the mechanisms of mind functioning by linking language with mind and reality. Thus, this research sought to highlight cognitive linguistics in terms of its foundations and principles. It also illustrates the relationship of cognitive linguistics to other cognitive sciences on the one hand and the relationship of cognitive linguistics to other sciences on the other hand. Accordingly, a closer look at Arab linguists' perception and reception of this modern linguistic achievement.

    Citation

    salah GHILOUS , ADMIN Admin , جغبلوا عواطف ، جامعة بسكرة, , (2024-12-01), الوافد الغربي إلى الفكر اللغوي العربي؛ (النموذج اللساني العرفاني) من الماهية إلى التلقي العربي., مجلة العدوي للسانيات العرفنية وتعليمية اللغات, Vol:3, Issue:1, pages:45-60, مخبر الدراسات اللغوية النظرية والتط\بيقية

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  • 2024-11-28
  • 2024-11-28

    Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA)

    In the manufacturing of composite materials, achieving high precision in drilling processes is crucial to ensure product quality and performance. This study investigates the influence of drilling parameters on key performance metrics delamination, circularity, and cylindricity using the Taguchi method. An L25 orthogonal array was employed to systematically explore the effects of spindle speed, feed, and drill type on the quality of drilled holes. The analysis of variance (ANOVA) revealed that feed significantly influences the outcomes across all drill materials, with cutting speed playing a secondary role. The study further applied desirability function analysis (DFA) to optimize these multi-responses, identifying the optimal parameter settings for each drill type. The results highlight the critical role of feed in minimizing delamination, circularity, and cylindricity with the optimal settings offering significant improvements in drilling performance.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , Abdelmalek ELHADI , ADMIN Admin , Mustapha Arslane , ADMIN Admin , , (2024-11-28), Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA), International Journal of Advanced Manufacturing Technology, Vol:135, Issue:2, pages:5631–5645, Springer

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  • 2024-11-28
  • 2024-11-28

    Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA)

    In the manufacturing of composite materials, achieving high precision in drilling processes is crucial to ensure product quality and performance. This study investigates the influence of drilling parameters on key performance metrics delamination, circularity, and cylindricity using the Taguchi method. An L25 orthogonal array was employed to systematically explore the effects of spindle speed, feed, and drill type on the quality of drilled holes. The analysis of variance (ANOVA) revealed that feed significantly influences the outcomes across all drill materials, with cutting speed playing a secondary role. The study further applied desirability function analysis (DFA) to optimize these multi-responses, identifying the optimal parameter settings for each drill type. The results highlight the critical role of feed in minimizing delamination, circularity, and cylindricity with the optimal settings offering significant improvements in drilling performance.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , Abdelmalek ELHADI , ADMIN Admin , Mustapha Arslane , ADMIN Admin , , (2024-11-28), Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA), International Journal of Advanced Manufacturing Technology, Vol:135, Issue:2, pages:5631–5645, Springer

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  • 2024-11-28
  • 2024-11-28

    Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA)

    In the manufacturing of composite materials, achieving high precision in drilling processes is crucial to ensure product quality and performance. This study investigates the influence of drilling parameters on key performance metrics delamination, circularity, and cylindricity using the Taguchi method. An L25 orthogonal array was employed to systematically explore the effects of spindle speed, feed, and drill type on the quality of drilled holes. The analysis of variance (ANOVA) revealed that feed significantly influences the outcomes across all drill materials, with cutting speed playing a secondary role. The study further applied desirability function analysis (DFA) to optimize these multi-responses, identifying the optimal parameter settings for each drill type. The results highlight the critical role of feed in minimizing delamination, circularity, and cylindricity with the optimal settings offering significant improvements in drilling performance.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , Abdelmalek ELHADI , ADMIN Admin , Mustapha Arslane , ADMIN Admin , , (2024-11-28), Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA), International Journal of Advanced Manufacturing Technology, Vol:135, Issue:2, pages:5631–5645, Springer

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  • 2024-11-28
  • 2024-11-28

    Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA)

    In the manufacturing of composite materials, achieving high precision in drilling processes is crucial to ensure product quality and performance. This study investigates the influence of drilling parameters on key performance metrics delamination, circularity, and cylindricity using the Taguchi method. An L25 orthogonal array was employed to systematically explore the effects of spindle speed, feed, and drill type on the quality of drilled holes. The analysis of variance (ANOVA) revealed that feed significantly influences the outcomes across all drill materials, with cutting speed playing a secondary role. The study further applied desirability function analysis (DFA) to optimize these multi-responses, identifying the optimal parameter settings for each drill type. The results highlight the critical role of feed in minimizing delamination, circularity, and cylindricity with the optimal settings offering significant improvements in drilling performance.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , Abdelmalek ELHADI , ADMIN Admin , Mustapha Arslane , ADMIN Admin , , (2024-11-28), Multi-response optimization of drilling parameters in hybrid natural fiber composites using Taguchi and desirability function analysis (DFA), International Journal of Advanced Manufacturing Technology, Vol:135, Issue:2, pages:5631–5645, Springer

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  • 2024-11-25
  • 2024-11-25

    -دور الذكاء الاصطناعي في تسيير الموارد البشرية في المؤسسات الصحفية العربية- الفرص والتحديات

    تتناول هذه المداخلة دور الذكاء الاصطناعي في إدارة الموارد البشرية بالمؤسسات الصحفية العربية، حيث يبرز الذكاء الاصطناعي كأداة فعالة لتحسين الكفاءة وزيادة الإنتاجية. تتضمن الفرص المتاحة استخدام الذكاء الاصطناعي في تحسين عمليات التوظيف، تخصيص برامج التدريب، تحليل البيانات لدعم اتخاذ القرارات، وتعزيز تجربة الموظف من خلال خدمات مخصصة. ومع ذلك، تواجه المؤسسات تحديات مثل مخاوف الخصوصية والأمان، القضايا الأخلاقية المتعلقة بالتحيز، الحاجة إلى التكيف مع التغيرات التكنولوجية، والمقاومة الثقافية من قبل الموظفين. تؤكد المداخلة على أهمية تطوير استراتيجيات فعالة للتعامل مع هذه التحديات، لضمان استخدام الذكاء الاصطناعي بشكل مسؤول وفعّال، مما يسهم في نجاح المؤسسات الصحفية في عصر التكنولوجيا الحديثة. الكلمات المفتاحية: ذكاء إصطناعي، مؤسسات صحفية، تسيير موارد بشرية.

    Citation

    FATTOUM BELKOBBI , Khalil DAHMANI , ADMIN Admin , ,(2024-11-25), -دور الذكاء الاصطناعي في تسيير الموارد البشرية في المؤسسات الصحفية العربية- الفرص والتحديات,-استخدام الذكاء الاصطناعي ودوره في تجسيد الرقمنة الإدارية – الواقع والتحديات,جامعة المسيلة

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  • 2024-11-25
  • 2024-11-25

    Groundwater quality assessment using the Water Quality Index and GIS in M’Sila watershed, Algeria

    The main objective of this study is to try to discuss the quality of groundwater and its suitability for human consumption, and to propose techniques to make it more suitable for human needs in order to avoid health problems caused by poor water quality. Water resources in Algeria have undergone spectacular exploitation in recent years, especially groundwater, which is considered the main resource of the Hodna watershed. This study focuses on the quality of water from six drillings intended for human consumption in M'sila. Overall, the quality of this water is poor, with TH > 50°F and very high sulfate levels. The use of chemical graphs (Piper, Schöeller-Berkaloff) and the application of statistical analyses (PCA, CAH, AFC) using the statistical program (XLSTAT 2014) showed that calcium bicarbonate and calcium sulfate are dominant due to the geological nature of the area containing gypsum and limestone.

    Citation

    ADMIN Admin , BELKACEM Merzouk , Tiaiba Mohammed, ,(2024-11-25), Groundwater quality assessment using the Water Quality Index and GIS in M’Sila watershed, Algeria,The 4th Mediterranean Geosciences Union - Annual Meeting (MedGU-24),Barcelone

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  • 2024-11-20
  • 2024-11-20

    Evaluation of groundwater quality of K’sob watershed (Algeria) based on index WQI

    Mohammed Tiaiba, Belkacem Merzouk. Evaluation of groundwater quality of K’sob watershed (Algeria) based on index WQI. Journée Nationale sur l’Eau, Energie & Environnement J3E2024), 20 Novembre 2024, Université de Médéa, Algérie

    Citation

    ADMIN Admin , BELKACEM Merzouk , Tiaiba Mohammed, ,(2024-11-20), Evaluation of groundwater quality of K’sob watershed (Algeria) based on index WQI,Journée Nationale sur l’Eau, Energie & Environnement J3E2024),Médéa, Algérie

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  • 2024-11-14
  • 2024-11-14

    using AI systems in judicial work(investigation,evidence and legal research)

    This study aims to determine the extent to which AI applications can be used in legal fields in particular in the fields of civil and criminal investigation and evidence, given the enormous technological development and which has often become an imperative to cope with today's global conditions, To come to the conclusion that overuse without censorship may negatively protect individuals' rights to privacy and work we must ensure that it is used in areas beneficial to mankind, Perhaps the most important of all is the enshrinement of such intelligence systems in the detection and destruction of human abusive programs.

    Citation

    Said Herzi , ADMIN Admin , , (2024-11-14), using AI systems in judicial work(investigation,evidence and legal research), journal of law and sustainable development, Vol:12, Issue:11, pages:1-17, open access publications LLC,Deerfield Beach,Florida,USA.

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  • 2024-11-14
  • 2024-11-14

    HERBAL MEDICINE IN THE TREATMENT OF WOUNDS:THE CASE OF SOME ALGERIAN MEDICINAL PLANTS

    Abstract Medicinal plants have been used for thousands of years to treat a variety of ailments. Several studies have shown the importance of healing plants in traditional medicine. Wounds, especially burns, are treated using plants containing bioactive components that activate and accelerate the healing mechanisms. Algeria is one of the major countries in Africa with a remarkable floristic richness related to its ecosystem and landscape diversity. A several ethnopharmacological survey performed in Algeria reports that various plants are used as healing plants like Pistacia vera, Artemisia absinthium and Teucrium polium. However, there were no scientific reports documented so far on the wound healing activities of these plants to substantiate the claim. In order to verify the veracity of the use of these plants by the local population, ointments based on plant powder, methanolic extracts, oleoresins and essential oils of these plants were prepared in order to evaluate their healing potential via in vivo circular wound excision model. The fractions have been characterized using GC-MS and GC-FID analyses and were topically applied on wound excision. Wound healing effects were evaluated by percent of wound contraction and by histological examination of the healed skin. Finally, the results of this study showed that these plants contain several types of bioactive molecules that significantly accelerate the healing process. This effect differs depending on the plant, its form and the dose used. This study provides a scientific rationale for the use of these local medicinal plants in the treatments of wounds. Keywords: Algerian medicinal plants, Phytochemistry, Galenic forms, Wound healing.

    Citation

    ABDERRAHIM Benkhaled , ADMIN Admin , Amel BOUDJELAL , ADMIN Admin , Aouina Nabila Yasmina, ,(2024-11-14), HERBAL MEDICINE IN THE TREATMENT OF WOUNDS:THE CASE OF SOME ALGERIAN MEDICINAL PLANTS,International Conference on Basic Science and Technology (ICBAST) 2024,Antalya, Turkey.

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  • 2024-11-14
  • 2024-11-14

    HERBAL MEDICINE IN THE TREATMENT OF WOUNDS:THE CASE OF SOME ALGERIAN MEDICINAL PLANTS

    Abstract Medicinal plants have been used for thousands of years to treat a variety of ailments. Several studies have shown the importance of healing plants in traditional medicine. Wounds, especially burns, are treated using plants containing bioactive components that activate and accelerate the healing mechanisms. Algeria is one of the major countries in Africa with a remarkable floristic richness related to its ecosystem and landscape diversity. A several ethnopharmacological survey performed in Algeria reports that various plants are used as healing plants like Pistacia vera, Artemisia absinthium and Teucrium polium. However, there were no scientific reports documented so far on the wound healing activities of these plants to substantiate the claim. In order to verify the veracity of the use of these plants by the local population, ointments based on plant powder, methanolic extracts, oleoresins and essential oils of these plants were prepared in order to evaluate their healing potential via in vivo circular wound excision model. The fractions have been characterized using GC-MS and GC-FID analyses and were topically applied on wound excision. Wound healing effects were evaluated by percent of wound contraction and by histological examination of the healed skin. Finally, the results of this study showed that these plants contain several types of bioactive molecules that significantly accelerate the healing process. This effect differs depending on the plant, its form and the dose used. This study provides a scientific rationale for the use of these local medicinal plants in the treatments of wounds. Keywords: Algerian medicinal plants, Phytochemistry, Galenic forms, Wound healing.

    Citation

    ABDERRAHIM Benkhaled , ADMIN Admin , Amel BOUDJELAL , ADMIN Admin , Aouina Nabila Yasmina, ,(2024-11-14), HERBAL MEDICINE IN THE TREATMENT OF WOUNDS:THE CASE OF SOME ALGERIAN MEDICINAL PLANTS,International Conference on Basic Science and Technology (ICBAST) 2024,Antalya, Turkey.

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  • 2024-11-10
  • 2024-11-10

    The Structural, Elastic, and thermodynamic properties of Sr2P7Br Double Zintl salt with heptaphosphanortricyclane configuration

    We investigated the effects of externally applied pressure on the Sr2P7Br compound’s properties, specifically its crystalline structure, elasticity, and thermodynamics. This investigation was carried out using the pseudopotential plane wave method within the framework of density functional theory. We used the well-known PBEsol variant of the exchange–correlation general gradient approximation specifically designed for solid-state analysis. This is the first endeavor to investigate the effects of pressure on the Sr2P7Br material using a theoretical approach. The computed equilibrium structural parameters closely match the relevant experimental counterpart values. The determined elastic constants, obtained under both ambient pressure and hydrostatic pressures up to 18 GPa, satisfy the mechanical stability requirements. Based on the computed Pugh’s ratio, Cauchy pressure, and Poisson’s ratio, it can be concluded that the Sr2P7Br compound exhibits ductile behavior. The polycrystalline elastic moduli, including the isotropic bulk modulus, shear modulus, Young’s modulus, and Poisson’s ratio, at ambient pressure and under pressure effects, were derived from the single-crystal elastic constants. Additionally, associated parameters, such as average sound velocity, Debye temperature, minimum thermal conductivity, and Vickers hardness, were examined under pressure influences. The quasi-harmonic Debye approximation was used to investigate the relationship between temperature and some macroscopic physical parameters, such as lattice parameter, bulk modulus, Debye temperature, volume thermal expansion coefficient, and isobaric and isochoric heat capacities, at fixed pressures of 0, 4, 8, 12, and 16 GPa. The results derived from the elastic constants exhibit substantial concordance with those computed using the Debye quasi-harmonic model, thereby validating the reliability of our findings.

    Citation

    SABER Saad Essaoud , Djamel ALLALI , ADMIN Admin , ADMIN Admin , Abdelmadjid Bouhemadou, Missoum Radjai, Abdelhak Bedjaoui, , (2024-11-10), The Structural, Elastic, and thermodynamic properties of Sr2P7Br Double Zintl salt with heptaphosphanortricyclane configuration, Computational and Theoretical Chemistry, Vol:1242, Issue:, pages:114947-114958, Elsevier

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  • 2024-11-10
  • 2024-11-10

    The Structural, Elastic, and thermodynamic properties of Sr2P7Br Double Zintl salt with heptaphosphanortricyclane configuration

    We investigated the effects of externally applied pressure on the Sr2P7Br compound’s properties, specifically its crystalline structure, elasticity, and thermodynamics. This investigation was carried out using the pseudopotential plane wave method within the framework of density functional theory. We used the well-known PBEsol variant of the exchange–correlation general gradient approximation specifically designed for solid-state analysis. This is the first endeavor to investigate the effects of pressure on the Sr2P7Br material using a theoretical approach. The computed equilibrium structural parameters closely match the relevant experimental counterpart values. The determined elastic constants, obtained under both ambient pressure and hydrostatic pressures up to 18 GPa, satisfy the mechanical stability requirements. Based on the computed Pugh’s ratio, Cauchy pressure, and Poisson’s ratio, it can be concluded that the Sr2P7Br compound exhibits ductile behavior. The polycrystalline elastic moduli, including the isotropic bulk modulus, shear modulus, Young’s modulus, and Poisson’s ratio, at ambient pressure and under pressure effects, were derived from the single-crystal elastic constants. Additionally, associated parameters, such as average sound velocity, Debye temperature, minimum thermal conductivity, and Vickers hardness, were examined under pressure influences. The quasi-harmonic Debye approximation was used to investigate the relationship between temperature and some macroscopic physical parameters, such as lattice parameter, bulk modulus, Debye temperature, volume thermal expansion coefficient, and isobaric and isochoric heat capacities, at fixed pressures of 0, 4, 8, 12, and 16 GPa. The results derived from the elastic constants exhibit substantial concordance with those computed using the Debye quasi-harmonic model, thereby validating the reliability of our findings.

    Citation

    SABER Saad Essaoud , Djamel ALLALI , ADMIN Admin , ADMIN Admin , Abdelmadjid Bouhemadou, Missoum Radjai, Abdelhak Bedjaoui, , (2024-11-10), The Structural, Elastic, and thermodynamic properties of Sr2P7Br Double Zintl salt with heptaphosphanortricyclane configuration, Computational and Theoretical Chemistry, Vol:1242, Issue:, pages:114947-114958, Elsevier

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  • 2024-11-05
  • 2024-11-05

    Performances improvement of DC Motor using a Fractional Order Adaptive PID Controller optimized by Genetic Algorithm

    In the past 20 years, scientists and engineers have rediscovered fractional calculus and have begun using it in more and more domains, most notably control theory. This study introduces a fractional adaptive PID (FAPID) controller which incorporates an additional parameter to enhance the performance of a conventional adaptive PID (APID) controller. A comparative analysis is conducted between the APID and FAPID controllers optimized using the metaheuristic Genetic Algorithm (GA). The evaluation uses a linearized model of the DC motor control system. The results demonstrate that FAPID controllers significantly outperform conventional APID controllers, particularly regarding rise time, settling time, overshoot, and mean absolute error. Among the proposed designs, the integration of FAPID proves to be the most effective in achieving a balance between responsiveness and stability, exhibiting exceptional robustness and adaptability to variations in DC motor and environmental conditions. This method can be extended to various fractional and integer systems to enhance their efficiency and reduce noise disturbance.

    Citation

    Abdelouaheb BOUKHALFA , ADMIN Admin , Khatir KHETTAB , , (2024-11-05), Performances improvement of DC Motor using a Fractional Order Adaptive PID Controller optimized by Genetic Algorithm, Science, Engineering and Technology (SET Journal), Vol:1, Issue:5, pages:1-8, Science, Engineering and Technology (SET Journal)

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  • 2024-10-30
  • 2024-10-30

    Carburizing and Boriding Treatments of Low Alloy Steels: Effect of Temperature and holding Time

    Carburizing and boriding are thermochemical treatments those can be applied to improve the mechanical and chemical properties of steels by surface modification while stilling adequate substrate properties. These kind of treatment are widely used to protect the degradation of the mechanical parts’ surface against wear. The carbide and boride atoms introduced into the steel can produce a hard metallic compound formed by diffusion and precipitation. The present study has been conducted in order to obtain an iron borides and carbides layer in separate state on two types of steel substrates 16NC6 and 20MC5 by using two different powders. The solid carburizing and boriding treatments was carried out separetelly in two electric furnaces heated at appropreate temperature for three holding times of 2h, 4h and, 6h. The present research work focuses an the effect studying of holding time as a parameter on the thickness, structure, morphology, and hardness of layers obtained on low carbon steels. The aim of this work is focused to determined the diffusion cefficient and activation energy of carbon and bore in the low steels of substrate and to know which element carbon or bore is the most diffused in the case where a carboburization treatment is carried out

    Citation

    Younes BENARIOUA , ADMIN Admin , ADMIN Admin , KERMICHE YOUNES, BAALI SALMA, ,(2024-10-30), Carburizing and Boriding Treatments of Low Alloy Steels: Effect of Temperature and holding Time,The 1st International Conference on Technological Applications of Materials (ICTAM'24),Setif

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  • 2024-10-30
  • 2024-10-30

    Carburizing and Boriding Treatments of Low Alloy Steels: Effect of Temperature and holding Time

    Carburizing and boriding are thermochemical treatments those can be applied to improve the mechanical and chemical properties of steels by surface modification while stilling adequate substrate properties. These kind of treatment are widely used to protect the degradation of the mechanical parts’ surface against wear. The carbide and boride atoms introduced into the steel can produce a hard metallic compound formed by diffusion and precipitation. The present study has been conducted in order to obtain an iron borides and carbides layer in separate state on two types of steel substrates 16NC6 and 20MC5 by using two different powders. The solid carburizing and boriding treatments was carried out separetelly in two electric furnaces heated at appropreate temperature for three holding times of 2h, 4h and, 6h. The present research work focuses an the effect studying of holding time as a parameter on the thickness, structure, morphology, and hardness of layers obtained on low carbon steels. The aim of this work is focused to determined the diffusion cefficient and activation energy of carbon and bore in the low steels of substrate and to know which element carbon or bore is the most diffused in the case where a carboburization treatment is carried out

    Citation

    Younes BENARIOUA , ADMIN Admin , ADMIN Admin , KERMICHE YOUNES, BAALI SALMA, ,(2024-10-30), Carburizing and Boriding Treatments of Low Alloy Steels: Effect of Temperature and holding Time,The 1st International Conference on Technological Applications of Materials (ICTAM'24),Setif

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  • 2024-10-24
  • 2024-10-24

    Enhancing Efficiency and Performance of Photovoltaic Systems through Machine Learning Integration

    This research examines the possibility of incorporating Machine Learning, a data-driven approach that learns from experience, into photovoltaic (PV) systems to significantly improve their efficiency and performance. Machine Learning offers a powerful and efficient way to solve complex problems by learning patterns and relationships from data. In this study, the authors explore the application of this technique in optimizing critical parameters within PV systems, such as module orientation, tilt angle, and power management. The research presents a comprehensive analysis of Machine Learning’s performance when applied to various photovoltaic systems in varying environmental conditions and load demands. The results demonstrate that the integration of Machine Learning leads to substantial improvements in system efficiency, energy output, and overall performance. This is achieved by optimizing the PV system’s parameters to maximize energy generation while minimizing energy losses and maintaining stability under fluctuating load conditions. Additionally, the paper discusses the advantages of using Machine Learning over traditional optimization techniques, such as its ability to manage problem optimization issues that are nonlinear and non-convex in nature, effectively. The authors also highlight the potential for further research in this area, including the exploration of other data-driven optimization techniques and the development of advanced control strategies for PV systems.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Khaled BELHOUCHET , ,(2024-10-24), Enhancing Efficiency and Performance of Photovoltaic Systems through Machine Learning Integration,International Conference on Emerging Intelligent Systems for Sustainable Development (ICEIS 2024),Aflou

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  • 2024-10-13
  • 2024-10-13

    Apport des SIG et de la télédétection dans le suivi et l’évaluation de la qualité physico-chimique des eaux de surface. Etude de cas : Barrage de Telesdit Wilaya de Bouira

    Elhadj Mokhtari, Belkacem Merzouk, Yasmine Haltali, Wafa Djeddi. Apport des SIG et de la télédétection dans le suivi et l’évaluation de la qualité physico-chimique des eaux de surface. Etude de cas : Barrage de Telesdit Wilaya de Bouira. 1er Séminaire National : Eau, Environnement et Energies renouvelables (SN3ER’24), 13 - 14 Octobre 2024, Université de M’Sila, Algérie.

    Citation

    Elhadj MOKHTARI , ADMIN Admin , BELKACEM Merzouk , ,(2024-10-13), Apport des SIG et de la télédétection dans le suivi et l’évaluation de la qualité physico-chimique des eaux de surface. Etude de cas : Barrage de Telesdit Wilaya de Bouira,1er Séminaire National : Eau, Environnement et Energies renouvelables (SN3ER’24), 13 - 14 Octobre 2024, Université de M’Sila,M'Sila, Algérie

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  • 2024-10-13
  • 2024-10-13

    Groundwater quality assessment using the Water Quality Index and GIS in the south-eastern region of Bordj Bou Arreridj (k'sob watershed), Algeria

    Mohammed Tiaiba, Belkacem Merzouk. Groundwater quality assessment using the Water Quality Index and GIS in the south-eastern region of Bordj Bou Arreridj (k'sob watershed), Algeria. 1er Séminaire National : Eau, Environnement et Energies renouvelables (SN3ER’24), 13 - 14 Octobre 2024, Université de M’Sila, Algérie.

    Citation

    ADMIN Admin , BELKACEM Merzouk , Tiaiba Mohammed, ,(2024-10-13), Groundwater quality assessment using the Water Quality Index and GIS in the south-eastern region of Bordj Bou Arreridj (k'sob watershed), Algeria,1er Séminaire National : Eau, Environnement et Energies renouvelables (SN3ER’24), 13 - 14 Octobre 2024, Université de M’Sila,M'Sila, Algérie

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  • 2024-10-13
  • 2024-10-13

    Dans cette étude, nous avons utilisé la vermiculite sodique comme adsorbant d’un colorant azoique. Le polluant étudié c’est l’acide rouge ; plusieurs paramètres d’adsorption telle que le pH de la solution, temps de contact, dose d’adsorbant, concentration

    Dans cette étude, nous avons utilisé la vermiculite sodique comme adsorbant d’un colorant azoique. Le polluant étudié c’est l’acide rouge ; plusieurs paramètres d’adsorption telle que le pH de la solution, temps de contact, dose d’adsorbant, concentration initiale du colorant, la salinité ont été étudiés. Les résultats de cette étude montre que le milieu acide est favorise mieux l’adsorption du colorant. L’étude cinétique montre que l’adsorption est rapide ou se déroule ou bout d’une heure le système adsorbant-colorant atteint à l’équilibre. La dose optimale d’adsorbant est de 0,05g dans 50 ml de solution. D’après les modélisations de isotherme d’adsorption le modèle Freundlich est le plus approprié. Ces résultats sont comparés avec une matériau hybride; St/argile . L’ étude cinétique montre que l’adsorption est rapide ou se déroule ou bout d’une heure le système adsorbant-colorant atteint à l’équilibre. La dose optimale d’adsorbant est de 0,05g dans 25 ml de solution. D’après les modélisations de isotherme d’adsorption le modèle Freundlich est le plus approprié..

    Citation

    ELHADJ Benrezgua , ADMIN Admin , ADMIN Admin , ,(2024-10-13), Dans cette étude, nous avons utilisé la vermiculite sodique comme adsorbant d’un colorant azoique. Le polluant étudié c’est l’acide rouge ; plusieurs paramètres d’adsorption telle que le pH de la solution, temps de contact, dose d’adsorbant, concentration,1er Seminaire National : Eau, Environnement et Energies renouvelables,Université Mohamed Boudiaf deM’Sila,

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  • 2024-10-13
  • 2024-10-13

    Dans cette étude, nous avons utilisé la vermiculite sodique comme adsorbant d’un colorant azoique. Le polluant étudié c’est l’acide rouge ; plusieurs paramètres d’adsorption telle que le pH de la solution, temps de contact, dose d’adsorbant, concentration

    Dans cette étude, nous avons utilisé la vermiculite sodique comme adsorbant d’un colorant azoique. Le polluant étudié c’est l’acide rouge ; plusieurs paramètres d’adsorption telle que le pH de la solution, temps de contact, dose d’adsorbant, concentration initiale du colorant, la salinité ont été étudiés. Les résultats de cette étude montre que le milieu acide est favorise mieux l’adsorption du colorant. L’étude cinétique montre que l’adsorption est rapide ou se déroule ou bout d’une heure le système adsorbant-colorant atteint à l’équilibre. La dose optimale d’adsorbant est de 0,05g dans 50 ml de solution. D’après les modélisations de isotherme d’adsorption le modèle Freundlich est le plus approprié. Ces résultats sont comparés avec une matériau hybride; St/argile . L’ étude cinétique montre que l’adsorption est rapide ou se déroule ou bout d’une heure le système adsorbant-colorant atteint à l’équilibre. La dose optimale d’adsorbant est de 0,05g dans 25 ml de solution. D’après les modélisations de isotherme d’adsorption le modèle Freundlich est le plus approprié..

    Citation

    ELHADJ Benrezgua , ADMIN Admin , ADMIN Admin , ,(2024-10-13), Dans cette étude, nous avons utilisé la vermiculite sodique comme adsorbant d’un colorant azoique. Le polluant étudié c’est l’acide rouge ; plusieurs paramètres d’adsorption telle que le pH de la solution, temps de contact, dose d’adsorbant, concentration,1er Seminaire National : Eau, Environnement et Energies renouvelables,Université Mohamed Boudiaf deM’Sila,

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  • 2024-10-10
  • 2024-10-10

    Advanced evaluation of mechanical properties of FDM-Printed PLA components: An analytical study

    Fused Deposition Modeling (FDM), commonly known as 3D printing, is a widely adopted additive manufacturing (AM) process that enables the production of lightweight components using different infill strategies and percentages. By manipulating key parameters such as temperature, infill density, and print speed, it is possible to produce parts with varying mechanical properties. Polylactic Acid (PLA), a biodegradable and cost-effective material derived from renewable resources, is frequently employed in FDM due to its environmental benefits and ease of use. This study investigates the mechanical behavior of PLA parts produced via FDM, with a particular focus on how extruder temperature, infill density, and weight influence tensile strength. In accordance with ASTM D-638 tensile testing standards, 27 PLA samples were printed using the Anycubic i3 Mega printer and analyzed. The findings indicated that while extruder temperature had a minimal effect on tensile strength, infill density significantly influenced mechanical performance. Weight, did not show any significant effect. Additionally, a predictive model based on the Taguchi L9 method was developed, showing high correlation with the experimental data, particularly for stress and strain.

    Citation

    KHALIL Zouaoui , ADMIN Admin , ,(2024-10-10), Advanced evaluation of mechanical properties of FDM-Printed PLA components: An analytical study,5th International Conference on Innovative Academic Studies,Konya, Turkey

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  • 2024-10-02
  • 2024-10-02

    NUMERICAL INVESTIGATION OF THE EFFECT OF FORCES ON THE PROCESS CRACK IN A COMPOSITE PLATE

    Composite materials find extensive usage in industrial applications. Howeer, they are susceptible to gradual damage over time. In this study, we explored the cracking processes in jute fiber-reinforced composite sheets subjected to uniaxial tension at varying displacement speeds (10, 20, and 30 mm/min) using Abaqus software. The composite plate dimensions are 25×35×10 mm³, with a 7 mm crack length. Our findings indicate that crack propagation in vehicle plates is influenced by mechanical properties relative to load, specifically through increased travel speed. We observed stress concentration around the crack, and the displacement speed significantly affects crack behavior. The cohesive J-integral was derived through finite element analysis, revealing a 90.90% relative error in the mean absolute value ΔJ across the five integral paths for the two sample types. Subsequently, five potential end conditions were assessed for further analysis, considering different boundary conditions: Simply supported (SSSS), two opposing sides clamped (SFSF), Clamped-Simply-ClampedSimply (SCSC), two opposing sides clamped (CFCF), and all sides clamped (CCCC). Additionally, three different types of tensile actions in the y-direction were considered

    Citation

    SAID Zergane , MOUSSA Zaoui , SALAH Amroune , Chouki FARSI , ADMIN Admin , , (2024-10-02), NUMERICAL INVESTIGATION OF THE EFFECT OF FORCES ON THE PROCESS CRACK IN A COMPOSITE PLATE, Academic Journal of Manufacturing Engineering, Vol:22, Issue:3, pages:8, Academic Journal of Manufacturing Engineering- Editura Politehnica

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  • 2024-10-01
  • 2024-10-01

    New design of robust controller based on fuzzy 12 linguistic variables for wind power conversion system.

    This paper proposes a strategy for robust control of the wind turbine using a double-fed induction machine (DFIM) controlled by the park transformation, which allows control commands to be applied to the generated power. By orienting the stator flux, the active and reactive powers generated by the DFIM can be decoupled. The proposed control utilises a combination of sliding mode control and fuzzy logic with 12 linguistic variables. This approach effectively addresses modelling uncertainties in both the generator and wind turbine, resulting in improved performance and production quality in this domain. Simulation results will demonstrate the advantages of this approach over the classic setting.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , ABDELGHAFOUR Herizi , ADMIN Admin , RIYADH Rouabhi , ADMIN Admin , FAYSSAL Ouagueni , , (2024-10-01), New design of robust controller based on fuzzy 12 linguistic variables for wind power conversion system., Przegląd Elektrotechniczny, Vol:100, Issue:10, pages:89-92, Przegląd Elektrotechniczny

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  • 2024-10-01
  • 2024-10-01

    New design of robust controller based on fuzzy 12 linguistic variables for wind power conversion system.

    This paper proposes a strategy for robust control of the wind turbine using a double-fed induction machine (DFIM) controlled by the park transformation, which allows control commands to be applied to the generated power. By orienting the stator flux, the active and reactive powers generated by the DFIM can be decoupled. The proposed control utilises a combination of sliding mode control and fuzzy logic with 12 linguistic variables. This approach effectively addresses modelling uncertainties in both the generator and wind turbine, resulting in improved performance and production quality in this domain. Simulation results will demonstrate the advantages of this approach over the classic setting.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , ABDELGHAFOUR Herizi , ADMIN Admin , RIYADH Rouabhi , ADMIN Admin , FAYSSAL Ouagueni , , (2024-10-01), New design of robust controller based on fuzzy 12 linguistic variables for wind power conversion system., Przegląd Elektrotechniczny, Vol:100, Issue:10, pages:89-92, Przegląd Elektrotechniczny

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  • 2024-10-01
  • 2024-10-01

    New design of robust controller based on fuzzy 12 linguistic variables for wind power conversion system.

    This paper proposes a strategy for robust control of the wind turbine using a double-fed induction machine (DFIM) controlled by the park transformation, which allows control commands to be applied to the generated power. By orienting the stator flux, the active and reactive powers generated by the DFIM can be decoupled. The proposed control utilises a combination of sliding mode control and fuzzy logic with 12 linguistic variables. This approach effectively addresses modelling uncertainties in both the generator and wind turbine, resulting in improved performance and production quality in this domain. Simulation results will demonstrate the advantages of this approach over the classic setting.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , ABDELGHAFOUR Herizi , ADMIN Admin , RIYADH Rouabhi , ADMIN Admin , FAYSSAL Ouagueni , , (2024-10-01), New design of robust controller based on fuzzy 12 linguistic variables for wind power conversion system., Przegląd Elektrotechniczny, Vol:100, Issue:10, pages:89-92, Przegląd Elektrotechniczny

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  • 2024-10-01
  • 2024-10-01

    قضية استقلالية المدقق الخارجي في الجزائر وأهم سبل دعمها(لجان التدقيق كنموذج) دراسة ميدانية

    This study aims to shed light on one of the contemporary issues in auditing, specifically the independence of external auditors in Algeria and the key measures to support it, given its significant importance. due to its significant importance. The absence of such independence inevitably leads to the failure of the audit process. To achieve this goal, we conducted interviews with a group of external auditors in the Sétif province of Algeria. The study revealed several key findings, including the presence of factors that indeed affect the independence of external auditors in Algeria, such as the length of the auditor-client relationship, audit fees, and the size of the client. Additionally, the study showed that Algerian economic institutions do not place sufficient emphasis on forming audit committees, due to a lack of legislation related to this issue. It is also noted that independence in Algeria primarily relies on the commitment of professionals to the laws governing the profession and the ethics of accounting and auditing. Key words: Auditor independence, Audit committees, Algeria.

    Citation

    Mabrouka HADJAR , ADMIN Admin , ,(2024-10-01), قضية استقلالية المدقق الخارجي في الجزائر وأهم سبل دعمها(لجان التدقيق كنموذج) دراسة ميدانية,قضايا معاصرة في المحاسبة-مقاربات علمية وعملية,جامعة الطارف

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  • 2024-09-19
  • 2024-09-19

    An ab initio study to investigate the physical properties of CsEuX3 (X=Cl, Br, and I) using different Exchange-Correlation potentials

    Several exchange–correlation potentials within the framework of Density Functional Theory (DFT) were used to study the structural, electronic, magnetic, optical, and thermoelectric properties of cubic perovskites CsEuX3 (X=Cl, Br, and I). The exchange–correlation potentials used in this study include GGA, mBJ, and GGA+U, both with and without spin–orbit coupling (SOC). The stability of all compounds was confirmed by the obtained values of the cohesive energy, formation energy, and tolerance factor. When GGA+U with SOC is used, all compounds show direct bandgap with no effect of the spin state on the bandgap value. The bandgap varies differently for spin-up and spin-down states under pressure. Europium ions control the magnetic properties. Optical investigations indicate that CsEuBr3 and CsEuI3 exhibit identical characteristics, whereas CsEuCl3 has a similar trend but shifted to higher energy. Absorption mostly takes place in the UV region, whereas there is about 20 % reflectance in the infrared (IR) and visible regions. All compounds have low energy loss and excellent transparency. Our investigation indicates that the present compounds are good thermoelectric materials with a high figure of merit. For example, CsEuCl3 demonstrates a figure of merit (ZT) ranging from 0.82 to 0.86 for spin-up and around 1 for spin-down over the temperature range 50–800 K. Such encouraging results indicate that all compounds are potential candidates for optical applications and thermoelectric devices.

    Citation

    SABER Saad Essaoud , MOHAMMED ELAMIN KETFI , ADMIN Admin , Anas Y. Al-Reyahi, Said M. Al Azar, Mufeed Maghrabi, , (2024-09-19), An ab initio study to investigate the physical properties of CsEuX3 (X=Cl, Br, and I) using different Exchange-Correlation potentials, Results in Physics, Vol:65, Issue:, pages:107980-107991, Elsevier

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  • 2024-09-19
  • 2024-09-19

    Numerical Analysis of Natural Convection in an Annular Cavity filled with Hybrid Nanofluids Under Magnetic Field

    This paper presents a numerical study of natural convection in an annular cavity filled with a hybrid nanofluid under the influence of a magnetic field. This study is significant for applications requiring enhanced thermal management, such as in heat exchangers, electronics cooling, and energy systems. The inner cylinder, equipped with fins and subjected to uniform volumetric heat generation, contrasts with the adiabatic outer cylinder. This study aims to investigate how different nanoparticle combinations (Fe3O4 with Cu, Ag, and Al2O3) and varying Hartmann and Rayleigh numbers impact heat transfer efficiency. The finite volume method is employed to solve the governing equations, with simulations conducted using Fluent 6.3.26. Parameters such as volume fraction (ϕ2 = 0.001, 0.004, 0.006), Hartmann number (0 ≤ Ha ≤ 100), Rayleigh number (3 × 103 ≤ Ra ≤ 2.4 × 104), and fin number (N = 0, 2, 4, 6, 8) are analyzed. Streamlines, isotherms, and induced magnetic field contours are utilized to assess flow structure and heat transfer. The results reveal that increasing the Rayleigh number and magnetic field enhances heat transfer, while the presence of fins, especially at N = 2, may inhibit convection currents and reduce heat transfer efficiency. These findings provide valuable insights into optimizing nanofluid-based cooling systems and highlight the trade-offs in incorporating fins in thermal management designs.

    Citation

    SALAH Amroune , ADMIN Admin , Souad BENKHERBACHE , ADMIN Admin , SAID Zergane , ADMIN Admin , , (2024-09-19), Numerical Analysis of Natural Convection in an Annular Cavity filled with Hybrid Nanofluids Under Magnetic Field, Energies, Vol:17, Issue:18, pages:4671, Multidisciplinary Digital Publishing Institute (MDPI)

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  • 2024-09-19
  • 2024-09-19

    Numerical Analysis of Natural Convection in an Annular Cavity filled with Hybrid Nanofluids Under Magnetic Field

    This paper presents a numerical study of natural convection in an annular cavity filled with a hybrid nanofluid under the influence of a magnetic field. This study is significant for applications requiring enhanced thermal management, such as in heat exchangers, electronics cooling, and energy systems. The inner cylinder, equipped with fins and subjected to uniform volumetric heat generation, contrasts with the adiabatic outer cylinder. This study aims to investigate how different nanoparticle combinations (Fe3O4 with Cu, Ag, and Al2O3) and varying Hartmann and Rayleigh numbers impact heat transfer efficiency. The finite volume method is employed to solve the governing equations, with simulations conducted using Fluent 6.3.26. Parameters such as volume fraction (ϕ2 = 0.001, 0.004, 0.006), Hartmann number (0 ≤ Ha ≤ 100), Rayleigh number (3 × 103 ≤ Ra ≤ 2.4 × 104), and fin number (N = 0, 2, 4, 6, 8) are analyzed. Streamlines, isotherms, and induced magnetic field contours are utilized to assess flow structure and heat transfer. The results reveal that increasing the Rayleigh number and magnetic field enhances heat transfer, while the presence of fins, especially at N = 2, may inhibit convection currents and reduce heat transfer efficiency. These findings provide valuable insights into optimizing nanofluid-based cooling systems and highlight the trade-offs in incorporating fins in thermal management designs.

    Citation

    SALAH Amroune , ADMIN Admin , Souad BENKHERBACHE , ADMIN Admin , SAID Zergane , ADMIN Admin , , (2024-09-19), Numerical Analysis of Natural Convection in an Annular Cavity filled with Hybrid Nanofluids Under Magnetic Field, Energies, Vol:17, Issue:18, pages:4671, Multidisciplinary Digital Publishing Institute (MDPI)

    See publication
  • 2024-09-19
  • 2024-09-19

    Numerical Analysis of Natural Convection in an Annular Cavity filled with Hybrid Nanofluids Under Magnetic Field

    This paper presents a numerical study of natural convection in an annular cavity filled with a hybrid nanofluid under the influence of a magnetic field. This study is significant for applications requiring enhanced thermal management, such as in heat exchangers, electronics cooling, and energy systems. The inner cylinder, equipped with fins and subjected to uniform volumetric heat generation, contrasts with the adiabatic outer cylinder. This study aims to investigate how different nanoparticle combinations (Fe3O4 with Cu, Ag, and Al2O3) and varying Hartmann and Rayleigh numbers impact heat transfer efficiency. The finite volume method is employed to solve the governing equations, with simulations conducted using Fluent 6.3.26. Parameters such as volume fraction (ϕ2 = 0.001, 0.004, 0.006), Hartmann number (0 ≤ Ha ≤ 100), Rayleigh number (3 × 103 ≤ Ra ≤ 2.4 × 104), and fin number (N = 0, 2, 4, 6, 8) are analyzed. Streamlines, isotherms, and induced magnetic field contours are utilized to assess flow structure and heat transfer. The results reveal that increasing the Rayleigh number and magnetic field enhances heat transfer, while the presence of fins, especially at N = 2, may inhibit convection currents and reduce heat transfer efficiency. These findings provide valuable insights into optimizing nanofluid-based cooling systems and highlight the trade-offs in incorporating fins in thermal management designs.

    Citation

    SALAH Amroune , ADMIN Admin , Souad BENKHERBACHE , ADMIN Admin , SAID Zergane , ADMIN Admin , , (2024-09-19), Numerical Analysis of Natural Convection in an Annular Cavity filled with Hybrid Nanofluids Under Magnetic Field, Energies, Vol:17, Issue:18, pages:4671, Multidisciplinary Digital Publishing Institute (MDPI)

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  • 2024-09-10
  • 2024-09-10

    صحافة البيانات ثنائية الضهور والتطور

    صحافة البيانات ثنائية الضهور والتطور

    Citation

    SAIDA Himeur , ADMIN Admin , MERWA KHENTI , ,(2024-09-10), صحافة البيانات ثنائية الضهور والتطور,الصحافة والمجتمع في عصر البيانات الضخمة,جامعة باتنة

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  • 2024-09-01
  • 2024-09-01

    A numerical approach of the space-time-fractional telegraph equations with variable coefficients

    In this paper, a numerical approach is proposed for solving the one-dimensional space-time-fractional telegraph equations with variable coefficients and Robin’s boundary conditions. The fractional derivatives are described in the conformable sense. Based on the Legendre collocation method, our problem is reduced to a linear system of second order differential equations and the Generalized-α method is applied to solve this system. With five examples, we present a comparative study between our algorithm and some numerical methods available in the literature. This algorithm gives an excellent approximation with a small number of collocation points.

    Citation

    SAAD Abdelkebir , ADMIN Admin , BRAHIM Nouiri , , (2024-09-01), A numerical approach of the space-time-fractional telegraph equations with variable coefficients, Palestine Journal of Mathematics, Vol:13, Issue:3, pages:20, Brahim NOUIRI and Saad ABDELKEBIR

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  • 2024-09-01
  • 2024-09-01

    Investigating crossflow interactions in multi-perforation cooling systems: Experimental and numerical insights

    This study investigates the effects of employing a multi-perforation cooling system on crossflow interactions, utilizing both numerical simulations and experimental methods. A 30° inclined multi-perforation cooling system is applied on a heated flat plate as part of the experimental setup. Large Eddy Simulation (LES) is utilized for Computational Fluid Dynamics (CFD) calculations to analyze the impact of multi-perforation on heat transfer dynamics. Validation is conducted by comparing the results with experimental investigations. The study encompasses both aerodynamic and thermal considerations, employing Particle Image Velocimetry (PIV) and infrared techniques for analysis, while wall heat flux is measured using electrical discharge. Experimental data on film cooling are collected through these methods, focusing on the impact of blowing ratio (M) and the number of open jet rows (R). The LES-based CFD simulations accurately predict the trajectory of the cooling film. Notably, the influence of flow through the multi-perforation on the primary flow is observable across both configurations of open jet rows (4R and 8R near the wall). The outcomes substantiate the formation of a cooling film emanating from the jet’s fourth row (4R configuration), thereby validating the LES simulations. Visualization of wall temperatures illustrates the formation of a cooling film, discernible through the visible heat distribution from row 4R. However, discrepancies arise in predicting the adiabatic cooling efficiency towards the exit of the 4R region and the commencement of the 8R region, potentially attributed to the alterations induced by the additional multi-perforated injection. The novelty and the main objective of this study is to evaluate the impact of the variation of geometric parameters between the jets and the main flow on the dispersion of the jets themselves. A novel function, tailored to the temperature evolution of the cooling gas, is employed for data analysis. Two geometry configurations, featuring varying open hole areas, are evaluated. The film-cooled heat transfer coefficient, depicted by the Nusselt number, and the adiabatic film cooling efficiency results, serve to appraise the film cooling efficacy of the configurations.

    Citation

    SALAH Amroune , ADMIN Admin , Amar BERKACHE , ADMIN Admin , , (2024-09-01), Investigating crossflow interactions in multi-perforation cooling systems: Experimental and numerical insights, Applied Thermal Engineering, Vol:252, Issue:4, pages:123681, Elsiver

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  • 2024-09-01
  • 2024-09-01

    Investigating crossflow interactions in multi-perforation cooling systems: Experimental and numerical insights

    This study investigates the effects of employing a multi-perforation cooling system on crossflow interactions, utilizing both numerical simulations and experimental methods. A 30° inclined multi-perforation cooling system is applied on a heated flat plate as part of the experimental setup. Large Eddy Simulation (LES) is utilized for Computational Fluid Dynamics (CFD) calculations to analyze the impact of multi-perforation on heat transfer dynamics. Validation is conducted by comparing the results with experimental investigations. The study encompasses both aerodynamic and thermal considerations, employing Particle Image Velocimetry (PIV) and infrared techniques for analysis, while wall heat flux is measured using electrical discharge. Experimental data on film cooling are collected through these methods, focusing on the impact of blowing ratio (M) and the number of open jet rows (R). The LES-based CFD simulations accurately predict the trajectory of the cooling film. Notably, the influence of flow through the multi-perforation on the primary flow is observable across both configurations of open jet rows (4R and 8R near the wall). The outcomes substantiate the formation of a cooling film emanating from the jet’s fourth row (4R configuration), thereby validating the LES simulations. Visualization of wall temperatures illustrates the formation of a cooling film, discernible through the visible heat distribution from row 4R. However, discrepancies arise in predicting the adiabatic cooling efficiency towards the exit of the 4R region and the commencement of the 8R region, potentially attributed to the alterations induced by the additional multi-perforated injection. The novelty and the main objective of this study is to evaluate the impact of the variation of geometric parameters between the jets and the main flow on the dispersion of the jets themselves. A novel function, tailored to the temperature evolution of the cooling gas, is employed for data analysis. Two geometry configurations, featuring varying open hole areas, are evaluated. The film-cooled heat transfer coefficient, depicted by the Nusselt number, and the adiabatic film cooling efficiency results, serve to appraise the film cooling efficacy of the configurations.

    Citation

    SALAH Amroune , ADMIN Admin , Amar BERKACHE , ADMIN Admin , , (2024-09-01), Investigating crossflow interactions in multi-perforation cooling systems: Experimental and numerical insights, Applied Thermal Engineering, Vol:252, Issue:4, pages:123681, Elsiver

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  • 2024-08-07
  • 2024-08-07

    Evaluation of drilling by induced delamination of hybrid biocomposites reinforced with natural fibers: a statistical analysis by RSM

    Studying the drilling of a hybrid jute/palm composite material offers significant contributions to sustainable material development. Incorporating renewable jute and palm fibers represents an innovative, eco-friendly approach compared to synthetic composites. This research aims to optimize drilling parameters to reduce defects and evaluate the performance of different drilling tools, crucial for industrial applications. Drilling is performed via three different types of drills bit: High-Speed Steel, HSS-Co5 coated high-speed steel with 5% cobalt, and carbide. The drilling process involves adjusting the feed and rotational speed. Response Surface Methodology (RSM) was used to select drilling settings by validating experimentally obtained data and predicting the behavior of the structure based on cutting circumstances. The findings indicated that the most effective cutting parameters for minimizing delamination are achieved using the HSS drill bit, namely at lower feed and rotational speeds. Delamination remains below the threshold of 1.106 when the feed is 0.04 mm/rev and the rotational speed is 1592 rpm. The analysis of the results obtained using the response surface methodology indicates that the R2 coefficient for cylindricity is 0.96%. In contrast, the rate of delamination is 0.79% and the rate of circularity is 0.89%.

    Citation

    Abdelmalek ELHADI , ADMIN Admin , ADMIN Admin , , (2024-08-07), Evaluation of drilling by induced delamination of hybrid biocomposites reinforced with natural fibers: a statistical analysis by RSM, Journal of Composite Materials, Vol:58, Issue:1, pages:2515–2530, SAGE PUBLICATIONS LTD

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  • 2024-08-07
  • 2024-08-07

    Evaluation of drilling by induced delamination of hybrid biocomposites reinforced with natural fibers: a statistical analysis by RSM

    Studying the drilling of a hybrid jute/palm composite material offers significant contributions to sustainable material development. Incorporating renewable jute and palm fibers represents an innovative, eco-friendly approach compared to synthetic composites. This research aims to optimize drilling parameters to reduce defects and evaluate the performance of different drilling tools, crucial for industrial applications. Drilling is performed via three different types of drills bit: High-Speed Steel, HSS-Co5 coated high-speed steel with 5% cobalt, and carbide. The drilling process involves adjusting the feed and rotational speed. Response Surface Methodology (RSM) was used to select drilling settings by validating experimentally obtained data and predicting the behavior of the structure based on cutting circumstances. The findings indicated that the most effective cutting parameters for minimizing delamination are achieved using the HSS drill bit, namely at lower feed and rotational speeds. Delamination remains below the threshold of 1.106 when the feed is 0.04 mm/rev and the rotational speed is 1592 rpm. The analysis of the results obtained using the response surface methodology indicates that the R2 coefficient for cylindricity is 0.96%. In contrast, the rate of delamination is 0.79% and the rate of circularity is 0.89%.

    Citation

    Abdelmalek ELHADI , ADMIN Admin , ADMIN Admin , , (2024-08-07), Evaluation of drilling by induced delamination of hybrid biocomposites reinforced with natural fibers: a statistical analysis by RSM, Journal of Composite Materials, Vol:58, Issue:1, pages:2515–2530, SAGE PUBLICATIONS LTD

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  • 2024-07-19
  • 2024-07-19

    Fresh and hardened properties and durability of self-compacting repair mortar made with ceramic powder as cement substitute

    Self-compacting concretes and mortars are characterized by their great fluidity, since they are carried out without the need for a vibrator, and they are also characterized by the fact that they contain a high percentage of mineral additives which greatly affect their properties in the elastic The main objective of this work is to study the effect of ceramic powder on the liquid, solid and durability properties of self- compacting mortar. By substituting the quantities of cement with the following percentages: 5%, 10%, 15%, 20%. The results showed that partial replacement of fine aggregate with sanitary ceramic fillers up to 20% of cement by weight improves mechanical properties and durability of the self-posing mortar. The test results were discussed in the lights of the literature data on influence of ceramic waste on properties of fresh and hardened self-posing mortar.

    Citation

    Messaouda BELOUADAH , ADMIN Admin , ,(2024-07-19), Fresh and hardened properties and durability of self-compacting repair mortar made with ceramic powder as cement substitute,International Conference on Engineering Natural Sciences and Technological Developments,Türkiye

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  • 2024-07-16
  • 2024-07-16

    Structural, electronic, and optical characteristics of BaXCl3 (X = Li, Na) perovskites

    The structural, electronic, and optical characteristics of the perovskites BaXCl3 (X = Li, Na) were thoroughly explored utilizing the full potential linear augmented plane wave approach within the density functional theory framework. When calculating structural properties, the exchange–correlation interactions were studied using the GGA-PBEsol functional, whereas when computing electronic and optical properties, they were analyzed using the TB-mBJ functional. The Equilibrium lattice parameters and bulk modulus were calculated by fitting total energy as a function of volume to the Birch-Murnaghan equation of state. Energy band dispersions estimated using the TB-mBJ method reveal that BaLiCl3 has an indirect R-Γ-type bandgap of 5.57 eV, while BaNaCl3 exhibits a direct Γ-Γ-type bandgap of 5.59 eV. Densities of state diagrams were used to further understand the characteristics of the energy bands. The Frequency dependency of the dielectric function, absorption coefficient, refractive index, optical reflectivity, and energy loss function was investigated over the energy range of 0 to 30 eV. The computed optical spectra indicate that these perovskites have substantial promise for UV-related applications.

    Citation

    SABER Saad Essaoud , Djamel ALLALI , ADMIN Admin , ADMIN Admin , Sarah Chaba Mouna, Djamel Houatis, Missoum Radjai, Md. Atikur Rahman, Abdelmadjid Bouhemadou, Hatem Allaf, Hüsnü Kara, , (2024-07-16), Structural, electronic, and optical characteristics of BaXCl3 (X = Li, Na) perovskites, Materials Science and Engineering: B, Vol:308, Issue:, pages:117578-117588, Elsevier

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  • 2024-07-16
  • 2024-07-16

    Structural, electronic, and optical characteristics of BaXCl3 (X = Li, Na) perovskites

    The structural, electronic, and optical characteristics of the perovskites BaXCl3 (X = Li, Na) were thoroughly explored utilizing the full potential linear augmented plane wave approach within the density functional theory framework. When calculating structural properties, the exchange–correlation interactions were studied using the GGA-PBEsol functional, whereas when computing electronic and optical properties, they were analyzed using the TB-mBJ functional. The Equilibrium lattice parameters and bulk modulus were calculated by fitting total energy as a function of volume to the Birch-Murnaghan equation of state. Energy band dispersions estimated using the TB-mBJ method reveal that BaLiCl3 has an indirect R-Γ-type bandgap of 5.57 eV, while BaNaCl3 exhibits a direct Γ-Γ-type bandgap of 5.59 eV. Densities of state diagrams were used to further understand the characteristics of the energy bands. The Frequency dependency of the dielectric function, absorption coefficient, refractive index, optical reflectivity, and energy loss function was investigated over the energy range of 0 to 30 eV. The computed optical spectra indicate that these perovskites have substantial promise for UV-related applications.

    Citation

    SABER Saad Essaoud , Djamel ALLALI , ADMIN Admin , ADMIN Admin , Sarah Chaba Mouna, Djamel Houatis, Missoum Radjai, Md. Atikur Rahman, Abdelmadjid Bouhemadou, Hatem Allaf, Hüsnü Kara, , (2024-07-16), Structural, electronic, and optical characteristics of BaXCl3 (X = Li, Na) perovskites, Materials Science and Engineering: B, Vol:308, Issue:, pages:117578-117588, Elsevier

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  • 2024-07-08
  • 2024-07-08

    EXPLORATION OF THE COMPUTATIONAL CLOSURE TECHNIQUES APPLIED TO ANALYZE THE FILM COOLING PROCESS OF THE TURBINE BLADES

    This study investigates interactions between discrete coolant jets in a transverse flow, as seen in turbine blade cooling. Numerical solutions and specific turbulence modeling aim to replicate the scenario accurately. Comparing outcomes from two turbulence models reveals differences near the wall due to jet injection at a 45-degree angle with a sub-unity blowing rate. Researchers intend to identify these distinctions via data analysis and simulation review. Insights into coolant behavior and the importance of precise turbulence modeling are highlighted, benefiting turbine blade cooling system design and efficiency. Lessons for diverse engineering applications with transverse flows are emphasized, along-side the need to advance turbulence modeling for accurate simulations. Overall, the study advances understanding of complex turbine blade cooling, emphasizing analysis, simulations, and accurate modeling for engineering insights.

    Citation

    SALAH Amroune , ADMIN Admin , Amar BERKACHE , ADMIN Admin , , (2024-07-08), EXPLORATION OF THE COMPUTATIONAL CLOSURE TECHNIQUES APPLIED TO ANALYZE THE FILM COOLING PROCESS OF THE TURBINE BLADES, Academic Journal of Manufacturing Engineering, Vol:22, Issue:2, pages:57-65, Editura Politehnica

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  • 2024-07-08
  • 2024-07-08

    EXPLORATION OF THE COMPUTATIONAL CLOSURE TECHNIQUES APPLIED TO ANALYZE THE FILM COOLING PROCESS OF THE TURBINE BLADES

    This study investigates interactions between discrete coolant jets in a transverse flow, as seen in turbine blade cooling. Numerical solutions and specific turbulence modeling aim to replicate the scenario accurately. Comparing outcomes from two turbulence models reveals differences near the wall due to jet injection at a 45-degree angle with a sub-unity blowing rate. Researchers intend to identify these distinctions via data analysis and simulation review. Insights into coolant behavior and the importance of precise turbulence modeling are highlighted, benefiting turbine blade cooling system design and efficiency. Lessons for diverse engineering applications with transverse flows are emphasized, along-side the need to advance turbulence modeling for accurate simulations. Overall, the study advances understanding of complex turbine blade cooling, emphasizing analysis, simulations, and accurate modeling for engineering insights.

    Citation

    SALAH Amroune , ADMIN Admin , Amar BERKACHE , ADMIN Admin , , (2024-07-08), EXPLORATION OF THE COMPUTATIONAL CLOSURE TECHNIQUES APPLIED TO ANALYZE THE FILM COOLING PROCESS OF THE TURBINE BLADES, Academic Journal of Manufacturing Engineering, Vol:22, Issue:2, pages:57-65, Editura Politehnica

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  • 2024-06-17
  • 2024-06-17

    PID Controller Design with a New Method Based on Fractionalized Integral Gain for Cruise Control System

    In this study, a fractionalized PID controller based on particle swarm optimization (PSO/FrPID) is presented for automobile cruise control systems. This system, known for its significant nonlinearity, has been linearized around its equilibrium point. In this method, the PID controller is designed using fractionalized integral and integer orders. This approach increases the parameters of the modified PID controller to four. The effectiveness of the proposed controller is evaluated in comparison to traditional PID methods, atomic search optimization (ASO/PID), particle swarm optimization (PSO/PID), and the genetic algorithm (GA-PID). The proposed methodology for the functioning of the vehicle cruise control system has proven to be superior to other promising methods documented in the literature, as confirmed by comparative evaluations that take into account both transient and frequency stability.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Abdelhakim idir , ,(2024-06-17), PID Controller Design with a New Method Based on Fractionalized Integral Gain for Cruise Control System,2024 IEEE International Conference on Environment and Electrical Engineering and 2024 IEEE Industrial and Commercial Power Systems Europe (EEEIC/I&CPS Europe),Roma ; Italy

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  • 2024-06-12
  • 2024-06-12

    Gut microbiota of Barn Swallow (Hirundo rustica) nestlings in Northeast Algeria

    The intestinal microbiota plays an important role in the digestion of food provided by parents to their hatchlings. Non-pathogenic bacteria in the digestive tract can be significantly beneficial to the host species, while pathogenic bacteria can reduce hatchling survival and lead to a decline in the number of new generation. Microbiological analysis of cloacal microflora of hatchlings revealed a highly diverse microbial load present from hatching until fledging (at 15 days) in Barn Swallow (Hirundo rustica). The intestinal microflora of 15-day-olds was the most diverse, and two groups are dependent on age: CPG and Lactobacilli are mostly present in hatchlings of the second and third ages (10 and 15 days). Our research was conducted to identify certain bacterial species, such as E. coli, Salmonella, Pseudomonas, Lactobacillus, Streptococcus, and Staphylococcus. The presence of most species was related to age, while the presence of Salmonella was accidental.

    Citation

    Yassine NOUIDJEM , ADMIN Admin , , (2024-06-12), Gut microbiota of Barn Swallow (Hirundo rustica) nestlings in Northeast Algeria, Ornis Hungarica, Vol:32, Issue:1, pages:154-161, sciendo

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  • 2024-05-31
  • 2024-05-31

    الادارة الاستراتيجية في المجال الرياضي

    في ظل التغيرات التي شهدتها الادارة عامة والادارة الرياضية بالخصوص وظهور اتجاهات حديثة وكثيرة للإدارة ومنها الادارة الاستراتيجية التي تعتبر من مجالات الدراسة التي نالت اهتماما واسعا وذلك استجابة للضغوطات والتأثيرات الكبرى التي تواجه المؤسسات والمنظمات بمختلف انواعها العمومية او الخاصة وشيوع هذا المصطلح كثيرا وتطبيقه بالمؤسسات العمومية والخاصة تحديدا فإننا نطرح هذا السؤال :ما مدى أهمية تطبيق الادارة الاستراتيجية في المؤسسات الرياضية. فالهيئات الرياضية والمؤسسات العاملة في الميدان الرياضي تعمل جميعا في سياق واحد لتحقيق اهدافها الخاصة و الاهداف الرياضية القومية ،ولا يتأتى ذلك الا بوجود استراتيجية ثابتة ذات اهداف بعيدة والاخذ بأساليب التقدم العلمي ونتائج البحوث العلمية في الادارات الحكومية المرتبطة بالمجال الرياضي ، مع توفير الاطر والاساليب اللازمة لنجاح هذه الاستراتيجية التي لها مجموعة من الابعاد منها الاقتصادية والحضرية والاجتماعية والثقافية والصحية وغيرها، وهنا يتجلى دور الاداري الذي يكون على درجة من الوعي في فهم سلوكيات افراد المجتمع بشان التعامل مع الرياضة ،والتفكير في ادارة المؤسسات الرياضية بطريقة استراتيجية لتحقيق الاهداف المرسومة بطريقة فعالة ،وهذا ما يتطرق اليه هذا الكتاب من تعريف وتحليل وتفسيروتوضيح لمفهوم الادارة الاستراتيجية في المجال الرياضي. وكذلك وجب ان يراعى في اعداد الاستراتيجية الشمولية لكفاءة الافراد وانواع الرياضات ووضوح الاطراف المرتبطة بالرياضة لتحقيق الاهداف والنتائج المرجوة.

    Citation

    NadirBOUSLAH , ahmedbenredjem , ADMINAdmin , ,(2024-05-31); الادارة الاستراتيجية في المجال الرياضي,,دار المتنبي للطباعة والنشر

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  • 2024-05-30
  • 2024-05-30

    مدينة الجزائر من القرية إلى الحاضرة، قراءة في التطور العمراني

    الداخلة تتناول التطور العمراني لمدينة الجزائر عبر الفترات التاريخية التي مرت بها

    Citation

    mohamed mouchmouche , ADMIN Admin , ,(2024-05-30), مدينة الجزائر من القرية إلى الحاضرة، قراءة في التطور العمراني,التاريخ السياسي و التطور العمراني للمغرب الأوسط والجزائر الحديثة,قسم التاريخ جامعة المسيلة

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  • 2024-05-12
  • 2024-05-12

    Adaptive Symmetrical PLL Based Impedance Shaping and Modelling Method to Improve Stability in Weak Grid

    his paper introduces an Adaptive Symmetrical Phase-Locked Loop (AS-PLL) designed to address various issues associated with traditional PLLs. An improved PLL architecture has been developed, the new PLL topologie allows to reduce frequency coupling and prevents unwanted sub-synchronous resonance oscillation resulting from classical asymmetry PLL. The system stability has been by integrating a structure and model into the PLL. Additionally, the impedance shaping method is used, with the assistance of the impedance model, to design state feedback loops that offer flexibility in bandwidth for the PLL. This was done while considering the current/power control loops to stabilise the system in the presence of a weak grid, The simulation results clearly illustrate the accuracy and effectiveness of the proposed strategy.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , ,(2024-05-12), Adaptive Symmetrical PLL Based Impedance Shaping and Modelling Method to Improve Stability in Weak Grid,2024 2nd International Conference on Electrical Engineering and Automatic Control (ICEEAC),Setif

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  • 2024-05-07
  • 2024-05-07

    Electropolissage des grilles des batteries au plomb

    L'électropolissage des grilles de batterie ENPEC a été réalisé avec succès, confirmé par différentes techniques telles que la microscopie électronique à balayage (MEB), la mesure de la rugosité et les tests électrochimiques comme les diagrammes de polarisation et les mesures d'impédance. Cette méthode s'est avérée efficace pour améliorer la surface des grilles, L'électropolissage offre ainsi une solution prometteuse pour obtenir des surfaces de grilles plus lisses et plus propres, ce qui pourrait conduire à des améliorations significatives des performances et de la durabilité des batteries ENPEC

    Citation

    Ahmed BAHLOUL , ADMIN Admin , ,(2024-05-07), Electropolissage des grilles des batteries au plomb,2nd International confeérence on sciences and technology ICEST 2024,Uni. sétif

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  • 2024-05-07
  • 2024-05-07

    THERAPEUTIC EFFECTS OF ESSENTIAL OILS OF SOME SPECIES FROM ALGERIA

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    Citation

    MADANI Sarri , NOUI Hendel , Djamel SARRI , ADMIN Admin , ,(2024-05-07), THERAPEUTIC EFFECTS OF ESSENTIAL OILS OF SOME SPECIES FROM ALGERIA,2ème colloque national de chimie,Université de M'sila

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  • 2024-05-07
  • 2024-05-07

    Variation de quelques composés chimiques chez six variétés de la carotte cultivée

    Les carottes comptent parmi les produits agricoles les plus populaires au monde et comptent parmi les légumes les plus importants sur le plan économique. Le présent travail a pour objectif de déterminer la composition chimique de six variétés de la carotte (Daucus carota L.) cultivées dans la région de M’sila, il s’agit des variétés suivantes : Muscad d’Alger, Super Muscad, Nantaise, Nantaise amélioré, Touchon, Breclium. La récolte est effectuée manuellement après 145 jours de la culture. Les caractères qui font l’objet de notre étude sont : La teneur en potassium, la teneur calcium, la teneur e sodium et la teneur en sucre soluble. Les résultats obtenus montrent que les deux variétés : Super muscad et Muscad d’Alger montrent les teneurs les plus élevées en potassium avec une teneur de 495.3 mg/100 g de Mf, 410.2 mg/100 g de Mf. Respectivement, les autre variétés sont trouvée entre 356/100 g de Mf et 332 mg/100 g de Mf. Concernant le sodium les variétés Muscad d’Algeret et Touchon sont classée en premier avec des valeurs de 196 mg/100 g de Mf ; 169 mg/100 g de Mf. Respectivement. Les variétés étudiées sont très pauvre en calcium. En outre la variété Breclium est la varités la plus sucrée avec une teneur de l’ordre 60,09 mg/100 g de Mf.

    Citation

    Boubakr HADJ KOUIDER , ADMIN Admin , ,(2024-05-07), Variation de quelques composés chimiques chez six variétés de la carotte cultivée,2ème colloque nationale de chimie (CNC2@2024) M’sila 06 - 07 Mai 2024,M’sila, Algérie

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  • 2024-05-07
  • 2024-05-07

    الملتقى الدولي الموسوم بالتحول الرقمي كآلية لتحقيق التنمية المستدامة بين التشريع الجزائري والتشريعات المقارنة

    مما لا شك فيه أن الجزائر قد أدركت بأن تحقيق التنمية المستدامة مرهون بالسير بخطوات عملاقة نحو تطوير الإدارة العامة ، ولا يتحقق ذلك ، إلا بمسايرة التطور المتسارع في مجال الرقمنة ، وتعميم الاستعمال لتكنولوجيا الإعلام والاتصال، وهو صلب موضوعنا في الإدارة الإلكترونية.

    Citation

    HADJ AZZEM Slimane , ADMIN Admin , WAHIDA OUSFANE , ,(2024-05-07), الملتقى الدولي الموسوم بالتحول الرقمي كآلية لتحقيق التنمية المستدامة بين التشريع الجزائري والتشريعات المقارنة,الإدارة الإلكترونية بالجزائر,المركز الجامعي سي الحواس ، بريكة

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  • 2024-05-06
  • 2024-05-06

    INFLUENCE OF THE ROTATION SPEED OF ROTARY FRICTION WELDING ON THE MICRO-HARDNESS OF FIXED AND MOBILE WELDED PARTS

    In recent years, the implementation of rotary friction welding technology in the industrial sector has made significant progress, especially in the automotive industry, where multiple sheets forming the bodywork of a single vehicle are now assembled using this process. In this study, we utilized the phenomenon of rotary friction to enhance the quality of welded parts at different rotational speeds. Measurements of stress values, microhardness, and temperature were conducted in the welding zones for the following combinations: A60 steel/A60 steel, A9 aluminum/A9 aluminum, and their combination A60/A9. The results from each pair of welded plates were compared to achieve a comprehensive characterization.

    Citation

    SALAH Amroune , ADMIN Admin , Chouki FARSI , ADMIN Admin , SAID Zergane , ADMIN Admin , , (2024-05-06), INFLUENCE OF THE ROTATION SPEED OF ROTARY FRICTION WELDING ON THE MICRO-HARDNESS OF FIXED AND MOBILE WELDED PARTS, Academic Journal of Manufacturing Engineering, Vol:22, Issue:2, pages:93-98, Editura Politehnica

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  • 2024-05-06
  • 2024-05-06

    INFLUENCE OF THE ROTATION SPEED OF ROTARY FRICTION WELDING ON THE MICRO-HARDNESS OF FIXED AND MOBILE WELDED PARTS

    In recent years, the implementation of rotary friction welding technology in the industrial sector has made significant progress, especially in the automotive industry, where multiple sheets forming the bodywork of a single vehicle are now assembled using this process. In this study, we utilized the phenomenon of rotary friction to enhance the quality of welded parts at different rotational speeds. Measurements of stress values, microhardness, and temperature were conducted in the welding zones for the following combinations: A60 steel/A60 steel, A9 aluminum/A9 aluminum, and their combination A60/A9. The results from each pair of welded plates were compared to achieve a comprehensive characterization.

    Citation

    SALAH Amroune , ADMIN Admin , Chouki FARSI , ADMIN Admin , SAID Zergane , ADMIN Admin , , (2024-05-06), INFLUENCE OF THE ROTATION SPEED OF ROTARY FRICTION WELDING ON THE MICRO-HARDNESS OF FIXED AND MOBILE WELDED PARTS, Academic Journal of Manufacturing Engineering, Vol:22, Issue:2, pages:93-98, Editura Politehnica

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  • 2024-05-06
  • 2024-05-06

    INFLUENCE OF THE ROTATION SPEED OF ROTARY FRICTION WELDING ON THE MICRO-HARDNESS OF FIXED AND MOBILE WELDED PARTS

    In recent years, the implementation of rotary friction welding technology in the industrial sector has made significant progress, especially in the automotive industry, where multiple sheets forming the bodywork of a single vehicle are now assembled using this process. In this study, we utilized the phenomenon of rotary friction to enhance the quality of welded parts at different rotational speeds. Measurements of stress values, microhardness, and temperature were conducted in the welding zones for the following combinations: A60 steel/A60 steel, A9 aluminum/A9 aluminum, and their combination A60/A9. The results from each pair of welded plates were compared to achieve a comprehensive characterization.

    Citation

    SALAH Amroune , ADMIN Admin , Chouki FARSI , ADMIN Admin , SAID Zergane , ADMIN Admin , , (2024-05-06), INFLUENCE OF THE ROTATION SPEED OF ROTARY FRICTION WELDING ON THE MICRO-HARDNESS OF FIXED AND MOBILE WELDED PARTS, Academic Journal of Manufacturing Engineering, Vol:22, Issue:2, pages:93-98, Editura Politehnica

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  • 2024-05-06
  • 2024-05-06

    FABRICATING A MOLD USING CNC TECHNOLOGY FOR COMPOSITE MATERIAL TENSILE TEST SAMPLES

    The continuous evolution of composite materials has sparked increasing interest in more precise and reproducible testing methods. The use of Computer Numerical Control (CNC) to create molds for composite material tensile specimens represents a significant advancement in this field. This innovative approach ensures enhanced precision, uniformity in sample fabrication, and efficient adaptation to the specific requirements of composite materials. This article focuses on the CNC mold creation process for composite material tensile specimens, highlighting its advantages and advancements in the field of material testing.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , , (2024-05-06), FABRICATING A MOLD USING CNC TECHNOLOGY FOR COMPOSITE MATERIAL TENSILE TEST SAMPLES, Academic Journal of Manufacturing Engineering, Vol:22, Issue:2, pages:66-73, Editura Politehnica

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  • 2024-05-06
  • 2024-05-06

    FABRICATING A MOLD USING CNC TECHNOLOGY FOR COMPOSITE MATERIAL TENSILE TEST SAMPLES

    The continuous evolution of composite materials has sparked increasing interest in more precise and reproducible testing methods. The use of Computer Numerical Control (CNC) to create molds for composite material tensile specimens represents a significant advancement in this field. This innovative approach ensures enhanced precision, uniformity in sample fabrication, and efficient adaptation to the specific requirements of composite materials. This article focuses on the CNC mold creation process for composite material tensile specimens, highlighting its advantages and advancements in the field of material testing.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , , (2024-05-06), FABRICATING A MOLD USING CNC TECHNOLOGY FOR COMPOSITE MATERIAL TENSILE TEST SAMPLES, Academic Journal of Manufacturing Engineering, Vol:22, Issue:2, pages:66-73, Editura Politehnica

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  • 2024-05-06
  • 2024-05-06

    Synthesis of carbons activated from palm biomass by thermochemical activation

    Activated carbons were synthesized from palm biomass by thermochemical activation impregnated with phosphoric acid at the temperature of 450°C for different impregnation ratios. The surface chemistry of these activated carbons was characterized by the pHPZC (pH of the point of zero charge), zeta potential, Fourier transform infrared (FTIR) spectroscopy, and TGA analysis, while their porous texture was evaluated using MB index and iodine number (mg/g). The impregnation ratio was found to influence the porosity of these activated carbons. The most efficient activated carbon was studied for its adsorption kinetics of MB, a basic (cationic) dye, at different temperatures. The adsorptions kinetic were described by the model of pseudo-second order. The synthesized activated carbon was found to be suitable for efficient adsorption of the basic textile dye like Methylene bleu (basic bleu 9).

    Citation

    ABDELBAKI Reffas , ADMIN Admin , TIAIBA Wafa ; Reffas Abdelbaki, ,(2024-05-06), Synthesis of carbons activated from palm biomass by thermochemical activation,Le 2ème colloque national de chimie (CNC2@2024),Université Mohamed Boudiaf - M’sila Faculté des sciences Département de Chimie

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  • 2024-04-30
  • 2024-04-30

    Contribution of E-marketing to the success of professional sport

    The study, in its general form, aimed to find out the extent to which electronic marketing contributes to the success of professional sports in Algeria. A questionnaire was designed to collect data and information. The sample of the study was chosen intentionally and represented 40 administrators from some professional clubs in the first division: Najm Maqra, Najm Ben Aknoun, Capital Union. The study concluded that the websites of the professional clubs studied contribute weakly to the success of sports professionalism. We also found that social networking sites “Facebook, Instagram” contribute weakly to the success of sports professionalism. Keywords: Contribution of E-marketing , sports professional.

    Citation

    idriss benredjem , ADMIN Admin , , (2024-04-30), Contribution of E-marketing to the success of professional sport, International Journal of Early Childhood Special Education, Vol:16, Issue:2, pages:127-134, International Journal of Early Childhood Special Education

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  • 2024-04-23
  • 2024-04-23

    Experimental investigation on dielectric properties of 1512L insulator using finite element analysis (FEM)

    In this work, a study on a cap and pin insulator (1512L) is proposed to evaluate the distribution of the electric field and the potential along the insulator under different conditions. A computational and experimental study for the examination of a real insulators model is assessed. Tests on contaminated insulators in the laboratory under the suggested conditions have been carried out. Finite element methods (FEM) have been employed in the numerical analysis to assess the electrical properties of the insulator under the suggested contamination profiles, including potential and electric field. The study proposed in this paper provides an effective and practical tool for analysis and enhance the dielectric properties of the studied insulator.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Khaled BELHOUCHET , ADMIN Admin , ASSAM Zorig , , (2024-04-23), Experimental investigation on dielectric properties of 1512L insulator using finite element analysis (FEM), Diagnostyka, Vol:25, Issue:2, pages:1-9, Polish Society of Technical Diagnostics

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  • 2024-04-23
  • 2024-04-23

    Experimental investigation on dielectric properties of 1512L insulator using finite element analysis (FEM)

    In this work, a study on a cap and pin insulator (1512L) is proposed to evaluate the distribution of the electric field and the potential along the insulator under different conditions. A computational and experimental study for the examination of a real insulators model is assessed. Tests on contaminated insulators in the laboratory under the suggested conditions have been carried out. Finite element methods (FEM) have been employed in the numerical analysis to assess the electrical properties of the insulator under the suggested contamination profiles, including potential and electric field. The study proposed in this paper provides an effective and practical tool for analysis and enhance the dielectric properties of the studied insulator.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Khaled BELHOUCHET , ADMIN Admin , ASSAM Zorig , , (2024-04-23), Experimental investigation on dielectric properties of 1512L insulator using finite element analysis (FEM), Diagnostyka, Vol:25, Issue:2, pages:1-9, Polish Society of Technical Diagnostics

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  • 2024-04-22
  • 2024-04-22

    A new improved of incorporating photovoltaic energy into the production of green hydrogen

    The integration of renewable energies, particularly photovoltaic energy, into green hydrogen production presents a highly promising prospect in the energy sector. Nonetheless, these energy sources face challenges due to their inherent instability and susceptibility to various atmospheric factors such as temperature and illumination. Therefore, it's imperative to tackle these challenges before renewable energy can be widely adopted as a primary source in hydrogen production. To address this, we propose constructing an autonomous photovoltaic system using MATLAB software. This system will employ a DC-DC boost converter to connect the PV array to the load. Furthermore, to enhance the efficiency of photovoltaic power generation, we will implement the perturbation and observation maximum power point tracking (MPPT) approach. The research endeavor extends towards integrating this optimized system with an electrolysers developed a sophisticated electrolyte model utilizing MATLAB Simulink software, paving the way for hydrogen gas production.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Yacine Benchenina , , (2024-04-22), A new improved of incorporating photovoltaic energy into the production of green hydrogen, Diagnostyka, Vol:25, Issue:2, pages:1-9, Diagnostyka

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  • 2024-04-22
  • 2024-04-22

    Accounting Challenges Caused By The Coronavirus (covid-19) And Their Impact On Sustainability Accounting

    هدفت

    Citation

    BOUBAKER Rezigat , ADMIN Admin , , (2024-04-22), Accounting Challenges Caused By The Coronavirus (covid-19) And Their Impact On Sustainability Accounting, رزيقات بوبكر, Vol:7, Issue:1, pages:1-11, أبحاث إقتصادية معاصرة

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  • 2024-03-11
  • 2024-03-11

    الايام التحسيسية الخاصة بالقرار 1275

    نظمت حاضنة الأعمال بجامعة المسيلة بالتنسيق مع كلية العلوم ورشة تحسيسية حول القرار الوزاري 1275 #يوم الثلاثاء 03 ديسمبر 2024، بالمدرج B03 ، ابتداءا من الساعة 9.30 من تقديم: أ.د ميمون نبيلة د. منيرة عريش د. فائزة مريتات

    Citation

    Nabila MIMOUNE , ADMIN Admin , ADMIN Admin , ,(2024-03-11), الايام التحسيسية الخاصة بالقرار 1275,ورشة تحسيسية بالقرار 1275,حاضنة الاعمال وكلية العلوم. المدرج B03

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  • 2024-03-11
  • 2024-03-11

    الايام التحسيسية الخاصة بالقرار 1275

    نظمت حاضنة الأعمال بجامعة المسيلة بالتنسيق مع كلية العلوم ورشة تحسيسية حول القرار الوزاري 1275 #يوم الثلاثاء 03 ديسمبر 2024، بالمدرج B03 ، ابتداءا من الساعة 9.30 من تقديم: أ.د ميمون نبيلة د. منيرة عريش د. فائزة مريتات

    Citation

    Nabila MIMOUNE , ADMIN Admin , ADMIN Admin , ,(2024-03-11), الايام التحسيسية الخاصة بالقرار 1275,ورشة تحسيسية بالقرار 1275,حاضنة الاعمال وكلية العلوم. المدرج B03

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  • 2024-02-13
  • 2024-02-13

    Exploring The Structural, Optical, and Photoluminescence properties of Mn1-xZnOx Thin Films Deposited by Sol-Gel Spin Coating Technique

    Pure and Mn-doped zinc oxide thin films at contents x =7% were synthesized by sol–gel spin coating process and investigated using various techniques. both samples have a wurtzite hexagonal phase, which wasn’t altered and getting relaxed by Mn-doping (Fig.1). The grain size decreased with 7% Mn doping (Table 1) while maintaining its growth mode The intensity of the (002) diffraction peak surpasses that of the other peaks, suggesting a preferential growth orientation along the c-axis owing to its minimal surface free energy among the (002) planes[1, 2], in addition, the results indicate a deterioration in the crystallinity of the ZnO film due to Mn incorporation". From fig.2 the transparency of films was decreased in the visible region and the average transmittance of MnxZnO1-x films with Mn doping content x=0, and 7 %, are 93 and 54% in the visible range, respectively. The Eg values of MZO films (fig.3) with Mn doping content x=0.00, and 0.07, are 3.27, and 3.18 eV, respectively. illustrates the PL spectra of ZnO and MZO thin films (Fig.4), at the excitation wavelength of 386 nm (3.21 eV). Several emission bands, including one violet emission (defect) at 411 nm (~3.01 eV), two blue emissions at 438/475 nm

    Citation

    ELHADJ Benrezgua , ADMIN Admin , ,(2024-02-13), Exploring The Structural, Optical, and Photoluminescence properties of Mn1-xZnOx Thin Films Deposited by Sol-Gel Spin Coating Technique,THE “2 ND NATIONAL CONFERENCE ON MATERIALS, ENERGY & ENVIRONMENT “,BISKRA, ALGERIA.

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  • 2024-02-01
  • 2024-02-01

    Agent-Based Simulation of Crowd Evacuation Through Complex Spaces

    In this paper, we have developed a description of an agent-based model for simulating the evacuation of crowds from complex physical spaces to escape dangerous situations. This model describes a physical space that contains a set of differently shaped fences and obstacles, and an exit door. The pedestrians composing the crowd and moving in this space in order to be evacuated are described as intelligent agents with a supervised machine learning using perception-based data to perceive particular environment differently. The description of this model is developed with the Python language where its execution represents its simulation. Before the simulation, the model can be validated using an animation written with the Python language and this to fix possible problems of model description. A model performance evaluation is presented using an analysis of simulation results and this evaluation shows that these results are very encouraging.

    Citation

    MUSTAPHA Bourahla , ADMIN Admin , MOHAMED Chatra , , (2024-02-01), Agent-Based Simulation of Crowd Evacuation Through Complex Spaces, Ingénierie des Systèmes d’Information, Vol:29, Issue:1, pages:1-11, International Information and Engineering Technology Association (IIETA)

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  • 2024-02-01
  • 2024-02-01

    New Direct Torque Control of Dual Star Induction Motor using Grey Wolf Optimization Technique.

    This document shows a comparative study between two approaches for the direct torque control of the dual star induction motor drive (DSIM), the first is based on conventional PID, the second uses new heuristic optimization technique based on the grey wolf optimizer GWO-PID. The benefits of this combination can reduce the Dual SIM speed control loop problems. The GWO algorithm has been programmed and implemented in MATLAB. In addition, the most importance appropriate GWO-PID scheme combines simultaneously many index such as reducing high torque ripple, steady-state error is reduced, response time is improved and disturbances do not change the drive performance.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Sabir MESSALTI , ADMIN Admin , ABDELGHAFOUR Herizi , , (2024-02-01), New Direct Torque Control of Dual Star Induction Motor using Grey Wolf Optimization Technique., Przeglad Elektrotechniczny, Vol:100, Issue:2, pages:109-113, Przeglad Elektrotechniczny

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  • 2024-02-01
  • 2024-02-01

    New Direct Torque Control of Dual Star Induction Motor using Grey Wolf Optimization Technique.

    This document shows a comparative study between two approaches for the direct torque control of the dual star induction motor drive (DSIM), the first is based on conventional PID, the second uses new heuristic optimization technique based on the grey wolf optimizer GWO-PID. The benefits of this combination can reduce the Dual SIM speed control loop problems. The GWO algorithm has been programmed and implemented in MATLAB. In addition, the most importance appropriate GWO-PID scheme combines simultaneously many index such as reducing high torque ripple, steady-state error is reduced, response time is improved and disturbances do not change the drive performance.

    Citation

    ABDERRAHIM Zemmit , ADMIN Admin , Sabir MESSALTI , ADMIN Admin , ABDELGHAFOUR Herizi , , (2024-02-01), New Direct Torque Control of Dual Star Induction Motor using Grey Wolf Optimization Technique., Przeglad Elektrotechniczny, Vol:100, Issue:2, pages:109-113, Przeglad Elektrotechniczny

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  • 2024-01-26
  • 2024-01-26

    Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films

    Spinel thin films Co3O4 have been deposited at a temperature of approximately 400 °C using spray pyrolysis. The testimony process was carried out with different deposition times (4, 5, 6, and 8 min), indicating that the films were grown for varying durations. The objective of varying deposition times of the thin films of Co3O4 was to optimize the fabrication of a hetero-junction between Co3O4 and ZnO. XRD, SEM and Raman investigations showed that pure cubic Co3O4 with an irregular spindle shaped particles have been successfully obtained. The films’ thickness increased under prolonged preparation times leading to a denser surface. The optical measurements revealed that the thin layer with a deposition time of 8 min attained a total absorbance of 98% in the apparent spectrum with a band gap of 1.27 eV. The I–V characteristics recorded of FTO/ZnO/Co3O4/Au cells showed that all devices exhibiting a rectifying behavior with a perfect factor that varies between 3.87 and 1.64. Our results suggest that Co3O4 at 8 min with a carrier density of 2.414 × 1014 cm−3 and high absorbance is potentially a competitive hole transport material in spinel solar cells, and, the recorded characteristics of the photovoltaic phenomenon were noted a short circuit current of 1.302 mA, an open circuit voltage of 369 mV and a fill factor of 32%.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Warda Darenfad, Noubeil Guermat; noubeil.guermat@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Fatima Zohra Satour, Ameur Zegadi, Kamel Mirouh, , (2024-01-26), Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films, Journal of Materials Science: Materials Electronics, Vol:35, Issue:, pages:162, Springer

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  • 2024-01-26
  • 2024-01-26

    Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films

    Spinel thin films Co3O4 have been deposited at a temperature of approximately 400 °C using spray pyrolysis. The testimony process was carried out with different deposition times (4, 5, 6, and 8 min), indicating that the films were grown for varying durations. The objective of varying deposition times of the thin films of Co3O4 was to optimize the fabrication of a hetero-junction between Co3O4 and ZnO. XRD, SEM and Raman investigations showed that pure cubic Co3O4 with an irregular spindle shaped particles have been successfully obtained. The films’ thickness increased under prolonged preparation times leading to a denser surface. The optical measurements revealed that the thin layer with a deposition time of 8 min attained a total absorbance of 98% in the apparent spectrum with a band gap of 1.27 eV. The I–V characteristics recorded of FTO/ZnO/Co3O4/Au cells showed that all devices exhibiting a rectifying behavior with a perfect factor that varies between 3.87 and 1.64. Our results suggest that Co3O4 at 8 min with a carrier density of 2.414 × 1014 cm−3 and high absorbance is potentially a competitive hole transport material in spinel solar cells, and, the recorded characteristics of the photovoltaic phenomenon were noted a short circuit current of 1.302 mA, an open circuit voltage of 369 mV and a fill factor of 32%.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Warda Darenfad, Noubeil Guermat; noubeil.guermat@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Fatima Zohra Satour, Ameur Zegadi, Kamel Mirouh, , (2024-01-26), Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films, Journal of Materials Science: Materials Electronics, Vol:35, Issue:, pages:162, Springer

    See publication
  • 2024-01-26
  • 2024-01-26

    Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films

    Spinel thin films Co3O4 have been deposited at a temperature of approximately 400 °C using spray pyrolysis. The testimony process was carried out with different deposition times (4, 5, 6, and 8 min), indicating that the films were grown for varying durations. The objective of varying deposition times of the thin films of Co3O4 was to optimize the fabrication of a hetero-junction between Co3O4 and ZnO. XRD, SEM and Raman investigations showed that pure cubic Co3O4 with an irregular spindle shaped particles have been successfully obtained. The films’ thickness increased under prolonged preparation times leading to a denser surface. The optical measurements revealed that the thin layer with a deposition time of 8 min attained a total absorbance of 98% in the apparent spectrum with a band gap of 1.27 eV. The I–V characteristics recorded of FTO/ZnO/Co3O4/Au cells showed that all devices exhibiting a rectifying behavior with a perfect factor that varies between 3.87 and 1.64. Our results suggest that Co3O4 at 8 min with a carrier density of 2.414 × 1014 cm−3 and high absorbance is potentially a competitive hole transport material in spinel solar cells, and, the recorded characteristics of the photovoltaic phenomenon were noted a short circuit current of 1.302 mA, an open circuit voltage of 369 mV and a fill factor of 32%.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Warda Darenfad, Noubeil Guermat; noubeil.guermat@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Fatima Zohra Satour, Ameur Zegadi, Kamel Mirouh, , (2024-01-26), Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films, Journal of Materials Science: Materials Electronics, Vol:35, Issue:, pages:162, Springer

    See publication
  • 2024-01-26
  • 2024-01-26

    Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films

    Spinel thin films Co3O4 have been deposited at a temperature of approximately 400 °C using spray pyrolysis. The testimony process was carried out with different deposition times (4, 5, 6, and 8 min), indicating that the films were grown for varying durations. The objective of varying deposition times of the thin films of Co3O4 was to optimize the fabrication of a hetero-junction between Co3O4 and ZnO. XRD, SEM and Raman investigations showed that pure cubic Co3O4 with an irregular spindle shaped particles have been successfully obtained. The films’ thickness increased under prolonged preparation times leading to a denser surface. The optical measurements revealed that the thin layer with a deposition time of 8 min attained a total absorbance of 98% in the apparent spectrum with a band gap of 1.27 eV. The I–V characteristics recorded of FTO/ZnO/Co3O4/Au cells showed that all devices exhibiting a rectifying behavior with a perfect factor that varies between 3.87 and 1.64. Our results suggest that Co3O4 at 8 min with a carrier density of 2.414 × 1014 cm−3 and high absorbance is potentially a competitive hole transport material in spinel solar cells, and, the recorded characteristics of the photovoltaic phenomenon were noted a short circuit current of 1.302 mA, an open circuit voltage of 369 mV and a fill factor of 32%.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Warda Darenfad, Noubeil Guermat; noubeil.guermat@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Fatima Zohra Satour, Ameur Zegadi, Kamel Mirouh, , (2024-01-26), Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films, Journal of Materials Science: Materials Electronics, Vol:35, Issue:, pages:162, Springer

    See publication
  • 2024-01-26
  • 2024-01-26

    Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films

    Spinel thin films Co3O4 have been deposited at a temperature of approximately 400 °C using spray pyrolysis. The testimony process was carried out with different deposition times (4, 5, 6, and 8 min), indicating that the films were grown for varying durations. The objective of varying deposition times of the thin films of Co3O4 was to optimize the fabrication of a hetero-junction between Co3O4 and ZnO. XRD, SEM and Raman investigations showed that pure cubic Co3O4 with an irregular spindle shaped particles have been successfully obtained. The films’ thickness increased under prolonged preparation times leading to a denser surface. The optical measurements revealed that the thin layer with a deposition time of 8 min attained a total absorbance of 98% in the apparent spectrum with a band gap of 1.27 eV. The I–V characteristics recorded of FTO/ZnO/Co3O4/Au cells showed that all devices exhibiting a rectifying behavior with a perfect factor that varies between 3.87 and 1.64. Our results suggest that Co3O4 at 8 min with a carrier density of 2.414 × 1014 cm−3 and high absorbance is potentially a competitive hole transport material in spinel solar cells, and, the recorded characteristics of the photovoltaic phenomenon were noted a short circuit current of 1.302 mA, an open circuit voltage of 369 mV and a fill factor of 32%.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Warda Darenfad, Noubeil Guermat; noubeil.guermat@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Fatima Zohra Satour, Ameur Zegadi, Kamel Mirouh, , (2024-01-26), Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films, Journal of Materials Science: Materials Electronics, Vol:35, Issue:, pages:162, Springer

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  • 2024-01-26
  • 2024-01-26

    Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films

    Spinel thin films Co3O4 have been deposited at a temperature of approximately 400 °C using spray pyrolysis. The testimony process was carried out with different deposition times (4, 5, 6, and 8 min), indicating that the films were grown for varying durations. The objective of varying deposition times of the thin films of Co3O4 was to optimize the fabrication of a hetero-junction between Co3O4 and ZnO. XRD, SEM and Raman investigations showed that pure cubic Co3O4 with an irregular spindle shaped particles have been successfully obtained. The films’ thickness increased under prolonged preparation times leading to a denser surface. The optical measurements revealed that the thin layer with a deposition time of 8 min attained a total absorbance of 98% in the apparent spectrum with a band gap of 1.27 eV. The I–V characteristics recorded of FTO/ZnO/Co3O4/Au cells showed that all devices exhibiting a rectifying behavior with a perfect factor that varies between 3.87 and 1.64. Our results suggest that Co3O4 at 8 min with a carrier density of 2.414 × 1014 cm−3 and high absorbance is potentially a competitive hole transport material in spinel solar cells, and, the recorded characteristics of the photovoltaic phenomenon were noted a short circuit current of 1.302 mA, an open circuit voltage of 369 mV and a fill factor of 32%.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Warda Darenfad, Noubeil Guermat; noubeil.guermat@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Fatima Zohra Satour, Ameur Zegadi, Kamel Mirouh, , (2024-01-26), Improvement in optoelectronics and photovoltaic properties of p‑Co3O4/n‑ZnO hetero‑junction: effect of deposition time of sprayed Co3O4 thin films, Journal of Materials Science: Materials Electronics, Vol:35, Issue:, pages:162, Springer

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  • 2024-01-21
  • 2024-01-21

    محـــاضــرات في تــــاريـخ الحـركة الوطنيــة الجزائــرية 1919 - 1954م

    تعالج هذه المطبوعة بالعرض والتحليل تجربة النضال السياسي الذي تبنته تيارات الحركة الوطنية الجزائرية بمختلف مشاربها وتوجهاتها ضمن أطر مهيكلة في شكل جمعيات وأحزاب ونوادي في سياق مواجهتهتعا للسياسة الكولونيالية وتجلياتها الكارثية على كافة النواحي، فهي تغطي سلسلة النشاطات والمبادرات الجماعية والفردية التي قامت بها النخب الوطنية بأساليب سلمية طوال الفترة الممتدة بين سنوات 1919م – 1954م من خلال الغوص في مطالبها وأطروحاتها، والوقوف على أعمالها الميدانية وحركاتها الاحتجاجية، ورصد تحركاتها الخارجية لإسماع الصوت الجزائري، وهي الأنشطة التي وسمت المرحلة، وعبرت عن رؤى وتصورات متمايزة لتلك التيارات. كما تستعرض أيضا مختلف أوجه السياسة القمعية الفرنسية التي رفضت كل مقترحات الإصلاح والترقية الحقيقية، وحاولت في مناسبات متباينة لاسيما عقب المواجهتين العالميتين الأولى والثانية امتصاص الغضب الأهلي بتقديم بعض المبادرات المحدودة والمشروطة، لكنها في الإجمال ظلت وفية لنهجها وتقاليدها المتبعة منذ بداية الاحتلال، القائمة على إقصاء العنصر الوطني وعدم الاعتراف له بحق الوجود، الأمر الذي قاد الجزائريين في النهاية إلى اختيار حمل السلاح مجددا، وتفجير الثورة التحريرية في الفاتح نوفمبر 1954م.

    Citation

    AbdelkaderKhelifi , ADMINAdmin , ,(2024-01-21); محـــاضــرات في تــــاريـخ الحـركة الوطنيــة الجزائــرية 1919 - 1954م,,

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  • 2024-01-13
  • 2024-01-13

    Density functional theory calculations of electronic structure and thermoelectric properties of K-based double perovskite materials

    Structural parameters, elastic constants, electronic band structures, and thermoelectric properties of K2ABF6 (A = Ag, Na, B = Rh, Pd, Ni, Nb, Ru, Ti) materials at zero pressure and elevated temperatures have been studied. The computations have been presented within the density functional theory using the Cambridge Serial Total Energy Package code. Special attention has been given to the thermoelectric properties of the studied materials for K-based double perovskite materials. The obtained results are generally found to be in good agreement with the available data in the literature. Other case, our results are predictions. The calculated lattice parameters are found to be less than 3% with those of experiments. All materials of interest are classified as ductile ones. An inspection of the band structure indicated that all materials under load are indirect bandgap semiconductors. The high Seebeck coefficient is shown by the semiconductors, while metals have the least Seebeck coefficient. The alloys possess high figure of merit (ZT) values, suggesting their applications in thermoelectric power generation.

    Citation

    ADMIN Admin , ADMIN Admin , Saadi Berri; saadi.berri@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-13), Density functional theory calculations of electronic structure and thermoelectric properties of K-based double perovskite materials, Energy Storage, Vol:5, Issue:, pages:e400, Wiley Online Library

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  • 2024-01-13
  • 2024-01-13

    Density functional theory calculations of electronic structure and thermoelectric properties of K-based double perovskite materials

    Structural parameters, elastic constants, electronic band structures, and thermoelectric properties of K2ABF6 (A = Ag, Na, B = Rh, Pd, Ni, Nb, Ru, Ti) materials at zero pressure and elevated temperatures have been studied. The computations have been presented within the density functional theory using the Cambridge Serial Total Energy Package code. Special attention has been given to the thermoelectric properties of the studied materials for K-based double perovskite materials. The obtained results are generally found to be in good agreement with the available data in the literature. Other case, our results are predictions. The calculated lattice parameters are found to be less than 3% with those of experiments. All materials of interest are classified as ductile ones. An inspection of the band structure indicated that all materials under load are indirect bandgap semiconductors. The high Seebeck coefficient is shown by the semiconductors, while metals have the least Seebeck coefficient. The alloys possess high figure of merit (ZT) values, suggesting their applications in thermoelectric power generation.

    Citation

    ADMIN Admin , ADMIN Admin , Saadi Berri; saadi.berri@univ-msila.dz, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-13), Density functional theory calculations of electronic structure and thermoelectric properties of K-based double perovskite materials, Energy Storage, Vol:5, Issue:, pages:e400, Wiley Online Library

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  • 2024-01-13
  • 2024-01-13

    Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2

    The impact of pressure on structural parameters, electronic structure and magnetic properties in MoS2 bulk material has been investigated using spin-polarized full-potential linearized augmented plane wave method in the TranBlaha-modified Becke-Johnson gradient approximation approach. Our findings at zero pressure in MoS2 bulk material are usually dealing with the obtainable experimental input. With increasing pressure, the lattice parameters of MoS2 bulk material are reduced, the material of interest has tendency to a metallic character and the total magnetic moment is increased non-monotonically in both spin-up and spin-down conduits. The impact of pressure on structural properties is more important vs. c-axis than a-axis.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Asma Bouarissa, Hajer Maghraoui-Meherzi, Ahned Gueddim, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-13), Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2, Bulletin of Materials Science, Vol:46, Issue:, pages:89, Springer

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  • 2024-01-13
  • 2024-01-13

    Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2

    The impact of pressure on structural parameters, electronic structure and magnetic properties in MoS2 bulk material has been investigated using spin-polarized full-potential linearized augmented plane wave method in the TranBlaha-modified Becke-Johnson gradient approximation approach. Our findings at zero pressure in MoS2 bulk material are usually dealing with the obtainable experimental input. With increasing pressure, the lattice parameters of MoS2 bulk material are reduced, the material of interest has tendency to a metallic character and the total magnetic moment is increased non-monotonically in both spin-up and spin-down conduits. The impact of pressure on structural properties is more important vs. c-axis than a-axis.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Asma Bouarissa, Hajer Maghraoui-Meherzi, Ahned Gueddim, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-13), Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2, Bulletin of Materials Science, Vol:46, Issue:, pages:89, Springer

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  • 2024-01-13
  • 2024-01-13

    Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2

    The impact of pressure on structural parameters, electronic structure and magnetic properties in MoS2 bulk material has been investigated using spin-polarized full-potential linearized augmented plane wave method in the TranBlaha-modified Becke-Johnson gradient approximation approach. Our findings at zero pressure in MoS2 bulk material are usually dealing with the obtainable experimental input. With increasing pressure, the lattice parameters of MoS2 bulk material are reduced, the material of interest has tendency to a metallic character and the total magnetic moment is increased non-monotonically in both spin-up and spin-down conduits. The impact of pressure on structural properties is more important vs. c-axis than a-axis.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Asma Bouarissa, Hajer Maghraoui-Meherzi, Ahned Gueddim, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-13), Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2, Bulletin of Materials Science, Vol:46, Issue:, pages:89, Springer

    See publication
  • 2024-01-13
  • 2024-01-13

    Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2

    The impact of pressure on structural parameters, electronic structure and magnetic properties in MoS2 bulk material has been investigated using spin-polarized full-potential linearized augmented plane wave method in the TranBlaha-modified Becke-Johnson gradient approximation approach. Our findings at zero pressure in MoS2 bulk material are usually dealing with the obtainable experimental input. With increasing pressure, the lattice parameters of MoS2 bulk material are reduced, the material of interest has tendency to a metallic character and the total magnetic moment is increased non-monotonically in both spin-up and spin-down conduits. The impact of pressure on structural properties is more important vs. c-axis than a-axis.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Asma Bouarissa, Hajer Maghraoui-Meherzi, Ahned Gueddim, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-13), Impact of compression on the crystal structure, electronic and magnetic properties for bulk MoS2, Bulletin of Materials Science, Vol:46, Issue:, pages:89, Springer

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  • 2024-01-11
  • 2024-01-11

    Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4

    The electronic structure, optical and thermodynamic properties of M3GeMgN4 (M = Sr or Ba) nitrides have been investigated using first-principles calculations. The calculated equilibrium lattice parameters and inter-atomic bond-lengths show excellent concordance with experiment. The elastic constants (Cijs) and their derived properties have been calculated showing that the examined compounds are mechanically stable and elastically soft, ductile and anisotropic. The analysis of the electronic structure reveals a semiconductor comportment for both crystals. The Sr3GeMgN4 (Ba3GeMgN4) compound possesses a direct (indirect) energy gap of 1.476 eV (1.194 eV). The chemical bonding in both semiconductors is dominated by a covalent character, which originates from the Ge-N and Mg-N hybridized states. Both nitrides show moderate dielectric properties, high visible and UV absorbance, indicating that both materials are suitable for optoelectronic applications. Phononic dispersion curves have demonstrated the dynamical stability of the studied crystals.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Faycel Djeghloul, Youcef Medkour, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Abdelkarim Roumili, , (2024-01-11), Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4, Materials Science and Engineering B, Vol:290, Issue:, pages:116292, Elsevier

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  • 2024-01-11
  • 2024-01-11

    Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4

    The electronic structure, optical and thermodynamic properties of M3GeMgN4 (M = Sr or Ba) nitrides have been investigated using first-principles calculations. The calculated equilibrium lattice parameters and inter-atomic bond-lengths show excellent concordance with experiment. The elastic constants (Cijs) and their derived properties have been calculated showing that the examined compounds are mechanically stable and elastically soft, ductile and anisotropic. The analysis of the electronic structure reveals a semiconductor comportment for both crystals. The Sr3GeMgN4 (Ba3GeMgN4) compound possesses a direct (indirect) energy gap of 1.476 eV (1.194 eV). The chemical bonding in both semiconductors is dominated by a covalent character, which originates from the Ge-N and Mg-N hybridized states. Both nitrides show moderate dielectric properties, high visible and UV absorbance, indicating that both materials are suitable for optoelectronic applications. Phononic dispersion curves have demonstrated the dynamical stability of the studied crystals.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Faycel Djeghloul, Youcef Medkour, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Abdelkarim Roumili, , (2024-01-11), Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4, Materials Science and Engineering B, Vol:290, Issue:, pages:116292, Elsevier

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  • 2024-01-11
  • 2024-01-11

    Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4

    The electronic structure, optical and thermodynamic properties of M3GeMgN4 (M = Sr or Ba) nitrides have been investigated using first-principles calculations. The calculated equilibrium lattice parameters and inter-atomic bond-lengths show excellent concordance with experiment. The elastic constants (Cijs) and their derived properties have been calculated showing that the examined compounds are mechanically stable and elastically soft, ductile and anisotropic. The analysis of the electronic structure reveals a semiconductor comportment for both crystals. The Sr3GeMgN4 (Ba3GeMgN4) compound possesses a direct (indirect) energy gap of 1.476 eV (1.194 eV). The chemical bonding in both semiconductors is dominated by a covalent character, which originates from the Ge-N and Mg-N hybridized states. Both nitrides show moderate dielectric properties, high visible and UV absorbance, indicating that both materials are suitable for optoelectronic applications. Phononic dispersion curves have demonstrated the dynamical stability of the studied crystals.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Faycel Djeghloul, Youcef Medkour, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Abdelkarim Roumili, , (2024-01-11), Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4, Materials Science and Engineering B, Vol:290, Issue:, pages:116292, Elsevier

    See publication
  • 2024-01-11
  • 2024-01-11

    Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4

    The electronic structure, optical and thermodynamic properties of M3GeMgN4 (M = Sr or Ba) nitrides have been investigated using first-principles calculations. The calculated equilibrium lattice parameters and inter-atomic bond-lengths show excellent concordance with experiment. The elastic constants (Cijs) and their derived properties have been calculated showing that the examined compounds are mechanically stable and elastically soft, ductile and anisotropic. The analysis of the electronic structure reveals a semiconductor comportment for both crystals. The Sr3GeMgN4 (Ba3GeMgN4) compound possesses a direct (indirect) energy gap of 1.476 eV (1.194 eV). The chemical bonding in both semiconductors is dominated by a covalent character, which originates from the Ge-N and Mg-N hybridized states. Both nitrides show moderate dielectric properties, high visible and UV absorbance, indicating that both materials are suitable for optoelectronic applications. Phononic dispersion curves have demonstrated the dynamical stability of the studied crystals.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Faycel Djeghloul, Youcef Medkour, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Abdelkarim Roumili, , (2024-01-11), Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4, Materials Science and Engineering B, Vol:290, Issue:, pages:116292, Elsevier

    See publication
  • 2024-01-11
  • 2024-01-11

    Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4

    The electronic structure, optical and thermodynamic properties of M3GeMgN4 (M = Sr or Ba) nitrides have been investigated using first-principles calculations. The calculated equilibrium lattice parameters and inter-atomic bond-lengths show excellent concordance with experiment. The elastic constants (Cijs) and their derived properties have been calculated showing that the examined compounds are mechanically stable and elastically soft, ductile and anisotropic. The analysis of the electronic structure reveals a semiconductor comportment for both crystals. The Sr3GeMgN4 (Ba3GeMgN4) compound possesses a direct (indirect) energy gap of 1.476 eV (1.194 eV). The chemical bonding in both semiconductors is dominated by a covalent character, which originates from the Ge-N and Mg-N hybridized states. Both nitrides show moderate dielectric properties, high visible and UV absorbance, indicating that both materials are suitable for optoelectronic applications. Phononic dispersion curves have demonstrated the dynamical stability of the studied crystals.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Faycel Djeghloul, Youcef Medkour, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Abdelkarim Roumili, , (2024-01-11), Electronic, mechanical, optical and thermodynamic properties of the quaternary semiconductors Sr3GeMgN4 and Ba3GeMgN4, Materials Science and Engineering B, Vol:290, Issue:, pages:116292, Elsevier

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  • 2024-01-09
  • 2024-01-09

    First-principles calculations of Mg2FeH6 under high-pressures and hydrogen storage properties

    We report on structural properties, elastic constants, mechanical and dynamical stabilities, electronic band structure, and hydrogen storage applications of Mg2FeH6 at zero and high-pressure effects. The work has been realized within the full-potential linearized augmented plane wave method. At zero pressure, the material under study is stable and has a ductile nature. The electronic structure of the material of interest is determined to be X-X wide direct band gap semiconductor with an energy of 1.88 eV. The hydrogen storage capacity wt (%) and the hydrogen desorption temperature are reported as 5.473 and 625.47 K respectively. The Debye temperature ϴD is recorded as 698 K using the elastic constants and about 775 K using the Gibbs calculations. Under high-pressure effect up to 80 GPa, the semiconductor still be an X-X semiconductor with an energy gap of 3.91 eV. The Debye temperature ϴD increases monotonically up to about 1120 K at 80 GPa when using the calculated elastic constants whereas the desorption temperature decreases from 650 to 0 K by increasing pressure from 0 to about 87 GPa.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , Hamza Ziani, Ahmed Gueddim, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-09), First-principles calculations of Mg2FeH6 under high-pressures and hydrogen storage properties, Journal of Molecular Modeling, Vol:29, Issue:, pages:59, Springer

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  • 2024-01-09
  • 2024-01-09

    First-principles calculations of Mg2FeH6 under high-pressures and hydrogen storage properties

    We report on structural properties, elastic constants, mechanical and dynamical stabilities, electronic band structure, and hydrogen storage applications of Mg2FeH6 at zero and high-pressure effects. The work has been realized within the full-potential linearized augmented plane wave method. At zero pressure, the material under study is stable and has a ductile nature. The electronic structure of the material of interest is determined to be X-X wide direct band gap semiconductor with an energy of 1.88 eV. The hydrogen storage capacity wt (%) and the hydrogen desorption temperature are reported as 5.473 and 625.47 K respectively. The Debye temperature ϴD is recorded as 698 K using the elastic constants and about 775 K using the Gibbs calculations. Under high-pressure effect up to 80 GPa, the semiconductor still be an X-X semiconductor with an energy gap of 3.91 eV. The Debye temperature ϴD increases monotonically up to about 1120 K at 80 GPa when using the calculated elastic constants whereas the desorption temperature decreases from 650 to 0 K by increasing pressure from 0 to about 87 GPa.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , Hamza Ziani, Ahmed Gueddim, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-09), First-principles calculations of Mg2FeH6 under high-pressures and hydrogen storage properties, Journal of Molecular Modeling, Vol:29, Issue:, pages:59, Springer

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  • 2024-01-09
  • 2024-01-09

    First-principles calculations of Mg2FeH6 under high-pressures and hydrogen storage properties

    We report on structural properties, elastic constants, mechanical and dynamical stabilities, electronic band structure, and hydrogen storage applications of Mg2FeH6 at zero and high-pressure effects. The work has been realized within the full-potential linearized augmented plane wave method. At zero pressure, the material under study is stable and has a ductile nature. The electronic structure of the material of interest is determined to be X-X wide direct band gap semiconductor with an energy of 1.88 eV. The hydrogen storage capacity wt (%) and the hydrogen desorption temperature are reported as 5.473 and 625.47 K respectively. The Debye temperature ϴD is recorded as 698 K using the elastic constants and about 775 K using the Gibbs calculations. Under high-pressure effect up to 80 GPa, the semiconductor still be an X-X semiconductor with an energy gap of 3.91 eV. The Debye temperature ϴD increases monotonically up to about 1120 K at 80 GPa when using the calculated elastic constants whereas the desorption temperature decreases from 650 to 0 K by increasing pressure from 0 to about 87 GPa.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , Hamza Ziani, Ahmed Gueddim, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-09), First-principles calculations of Mg2FeH6 under high-pressures and hydrogen storage properties, Journal of Molecular Modeling, Vol:29, Issue:, pages:59, Springer

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  • 2024-01-09
  • 2024-01-09

    Water Absorption Behavior of Date Palm Fruit Branches Fiber (DPF) Composites: Experimental and Statistical Analyses

    The environmental effects on the response of Date Palm Fiber (DPF) composites are explored through an in-depth analysis of water absorption behavior. This study comprehensively investigates the influence of fiber content, immersion time, and water type on mass gain. Rigorous experimentation and advanced statistical analyses quantify the percent contribution of each factor, emphasizing the dominant role of fiber content at 96.61%. While immersion time and water type contribute relatively smaller percentages (2.11% and 1.28%, respectively), their insights are invaluable for tailored composite design. The study extends to interaction effects, showcasing the combined influence of factors. Regression models, progressing from linear and reciprocal formulations to comprehensive global models, are developed. Meticulous examination of prediction accuracy, using diverse statistical metrics, highlights the superior performance of the global reciprocal model across different water types. This work provides essential insights for optimizing DPF composite design, fabrication, and application, empowering engineers and researchers to make informed decisions in industries demanding tailored water absorption behavior.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , , (2024-01-09), Water Absorption Behavior of Date Palm Fruit Branches Fiber (DPF) Composites: Experimental and Statistical Analyses, Journal of natural fibers, Vol:21, Issue:1, pages:1-28, Taylor and Francis

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  • 2024-01-09
  • 2024-01-09

    Water Absorption Behavior of Date Palm Fruit Branches Fiber (DPF) Composites: Experimental and Statistical Analyses

    The environmental effects on the response of Date Palm Fiber (DPF) composites are explored through an in-depth analysis of water absorption behavior. This study comprehensively investigates the influence of fiber content, immersion time, and water type on mass gain. Rigorous experimentation and advanced statistical analyses quantify the percent contribution of each factor, emphasizing the dominant role of fiber content at 96.61%. While immersion time and water type contribute relatively smaller percentages (2.11% and 1.28%, respectively), their insights are invaluable for tailored composite design. The study extends to interaction effects, showcasing the combined influence of factors. Regression models, progressing from linear and reciprocal formulations to comprehensive global models, are developed. Meticulous examination of prediction accuracy, using diverse statistical metrics, highlights the superior performance of the global reciprocal model across different water types. This work provides essential insights for optimizing DPF composite design, fabrication, and application, empowering engineers and researchers to make informed decisions in industries demanding tailored water absorption behavior.

    Citation

    SALAH Amroune , ADMIN Admin , Mohamed SLAMANI , ADMIN Admin , , (2024-01-09), Water Absorption Behavior of Date Palm Fruit Branches Fiber (DPF) Composites: Experimental and Statistical Analyses, Journal of natural fibers, Vol:21, Issue:1, pages:1-28, Taylor and Francis

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  • 2024-01-07
  • 2024-01-07

    First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys

    The structural parameters, electronic band structure and optical spectra of CdxZn1-xS (0 ≤ x ≤ 1) ternary semiconductor alloys are studied. The calculations are realized using the full potential linearized augmented plane wave method. The modified local density approximation (LDA) and generalized gradient approximation (GGA) have been used for describing the exchange-correlation potential. The obtained results for zinc-blende CdxZn1-xS ternary alloys show a general wellness with the data shown in the literature. An inspection of electronic band structure indicates that zinc-blende CdxZn1-xS are (Г→Г) direct band gap semiconductors (from x = 0 up to x = 1). A predominant ionic type of the chemical bonding in these materials has been indicated. The density of states shows various peaks in both valence and conduction localities proposing that an abundance of conditions is obtainable for occupation. The alloys affect the optical features of interest. The results obtained from the present work show that the zinc-blende CdxZn1-xS is a promettant material for photovoltaic device applications. Moreover, the alloy of interest can be used in different devices from visible to ultraviolet light.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , benlechheb soumia ; soumia.benlechheb @univ-msila.dz, mustapha boucenna; mustapha.boucenna@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-07), First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys, Chemistry physics impact, Vol:6, Issue:, pages:100177, Elsevier

    See publication
  • 2024-01-07
  • 2024-01-07

    First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys

    The structural parameters, electronic band structure and optical spectra of CdxZn1-xS (0 ≤ x ≤ 1) ternary semiconductor alloys are studied. The calculations are realized using the full potential linearized augmented plane wave method. The modified local density approximation (LDA) and generalized gradient approximation (GGA) have been used for describing the exchange-correlation potential. The obtained results for zinc-blende CdxZn1-xS ternary alloys show a general wellness with the data shown in the literature. An inspection of electronic band structure indicates that zinc-blende CdxZn1-xS are (Г→Г) direct band gap semiconductors (from x = 0 up to x = 1). A predominant ionic type of the chemical bonding in these materials has been indicated. The density of states shows various peaks in both valence and conduction localities proposing that an abundance of conditions is obtainable for occupation. The alloys affect the optical features of interest. The results obtained from the present work show that the zinc-blende CdxZn1-xS is a promettant material for photovoltaic device applications. Moreover, the alloy of interest can be used in different devices from visible to ultraviolet light.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , benlechheb soumia ; soumia.benlechheb @univ-msila.dz, mustapha boucenna; mustapha.boucenna@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-07), First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys, Chemistry physics impact, Vol:6, Issue:, pages:100177, Elsevier

    See publication
  • 2024-01-07
  • 2024-01-07

    First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys

    The structural parameters, electronic band structure and optical spectra of CdxZn1-xS (0 ≤ x ≤ 1) ternary semiconductor alloys are studied. The calculations are realized using the full potential linearized augmented plane wave method. The modified local density approximation (LDA) and generalized gradient approximation (GGA) have been used for describing the exchange-correlation potential. The obtained results for zinc-blende CdxZn1-xS ternary alloys show a general wellness with the data shown in the literature. An inspection of electronic band structure indicates that zinc-blende CdxZn1-xS are (Г→Г) direct band gap semiconductors (from x = 0 up to x = 1). A predominant ionic type of the chemical bonding in these materials has been indicated. The density of states shows various peaks in both valence and conduction localities proposing that an abundance of conditions is obtainable for occupation. The alloys affect the optical features of interest. The results obtained from the present work show that the zinc-blende CdxZn1-xS is a promettant material for photovoltaic device applications. Moreover, the alloy of interest can be used in different devices from visible to ultraviolet light.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , benlechheb soumia ; soumia.benlechheb @univ-msila.dz, mustapha boucenna; mustapha.boucenna@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-07), First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys, Chemistry physics impact, Vol:6, Issue:, pages:100177, Elsevier

    See publication
  • 2024-01-07
  • 2024-01-07

    First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys

    The structural parameters, electronic band structure and optical spectra of CdxZn1-xS (0 ≤ x ≤ 1) ternary semiconductor alloys are studied. The calculations are realized using the full potential linearized augmented plane wave method. The modified local density approximation (LDA) and generalized gradient approximation (GGA) have been used for describing the exchange-correlation potential. The obtained results for zinc-blende CdxZn1-xS ternary alloys show a general wellness with the data shown in the literature. An inspection of electronic band structure indicates that zinc-blende CdxZn1-xS are (Г→Г) direct band gap semiconductors (from x = 0 up to x = 1). A predominant ionic type of the chemical bonding in these materials has been indicated. The density of states shows various peaks in both valence and conduction localities proposing that an abundance of conditions is obtainable for occupation. The alloys affect the optical features of interest. The results obtained from the present work show that the zinc-blende CdxZn1-xS is a promettant material for photovoltaic device applications. Moreover, the alloy of interest can be used in different devices from visible to ultraviolet light.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , benlechheb soumia ; soumia.benlechheb @univ-msila.dz, mustapha boucenna; mustapha.boucenna@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-07), First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys, Chemistry physics impact, Vol:6, Issue:, pages:100177, Elsevier

    See publication
  • 2024-01-07
  • 2024-01-07

    First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys

    The structural parameters, electronic band structure and optical spectra of CdxZn1-xS (0 ≤ x ≤ 1) ternary semiconductor alloys are studied. The calculations are realized using the full potential linearized augmented plane wave method. The modified local density approximation (LDA) and generalized gradient approximation (GGA) have been used for describing the exchange-correlation potential. The obtained results for zinc-blende CdxZn1-xS ternary alloys show a general wellness with the data shown in the literature. An inspection of electronic band structure indicates that zinc-blende CdxZn1-xS are (Г→Г) direct band gap semiconductors (from x = 0 up to x = 1). A predominant ionic type of the chemical bonding in these materials has been indicated. The density of states shows various peaks in both valence and conduction localities proposing that an abundance of conditions is obtainable for occupation. The alloys affect the optical features of interest. The results obtained from the present work show that the zinc-blende CdxZn1-xS is a promettant material for photovoltaic device applications. Moreover, the alloy of interest can be used in different devices from visible to ultraviolet light.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , benlechheb soumia ; soumia.benlechheb @univ-msila.dz, mustapha boucenna; mustapha.boucenna@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, , (2024-01-07), First-principles calculations to investigate electronic structure and optical spectra of CdxZn1-xS ternary semiconductor alloys, Chemistry physics impact, Vol:6, Issue:, pages:100177, Elsevier

    See publication
  • 2024-01-06
  • 2024-01-06

    Phase stability and physical properties of lanthanum dicarbide under pressure

    First-principles calculations of electronic parameters, mechanical and dynamical stabilities on superconducting properties of the body-centered tetragonal intermetallic lanthanum dicarbide LaC2 have been reported at zero and high pressures. The investigated properties have been established through both full-potential-linearized augmented plane wave (FP-LAPW) and plane-wave pseudopotential (PW-PP) approaches, in conjunction with the generalized gradient approximation (GGA). Our investigations validate that the LaC2 crystal has a mechanical and dynamical stability under normal conditions. The generalised mechanical stability criteria applied to compressed LaC2, suggest that the compound remains stable for pressures below 18.30 GPa. The evaluated superconducting critical temperature Tc and the electron–phonon coupling parameter λ at zero pressure are found to be in excellent concordance with the experimental data. Furthermore, at elevated pressures, Tc and λ are predicted to decrease and the normalised specific heat jump remains unchanged.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Djalel Mebarki, Souad Dilmi, Saib Salima; salima.saib@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, Souad Louhibi-Fasla, , (2024-01-06), Phase stability and physical properties of lanthanum dicarbide under pressure, Philosophical Magazine, Vol:103, Issue:, pages:969, Taylor & Francis Online

    See publication
  • 2024-01-06
  • 2024-01-06

    Phase stability and physical properties of lanthanum dicarbide under pressure

    First-principles calculations of electronic parameters, mechanical and dynamical stabilities on superconducting properties of the body-centered tetragonal intermetallic lanthanum dicarbide LaC2 have been reported at zero and high pressures. The investigated properties have been established through both full-potential-linearized augmented plane wave (FP-LAPW) and plane-wave pseudopotential (PW-PP) approaches, in conjunction with the generalized gradient approximation (GGA). Our investigations validate that the LaC2 crystal has a mechanical and dynamical stability under normal conditions. The generalised mechanical stability criteria applied to compressed LaC2, suggest that the compound remains stable for pressures below 18.30 GPa. The evaluated superconducting critical temperature Tc and the electron–phonon coupling parameter λ at zero pressure are found to be in excellent concordance with the experimental data. Furthermore, at elevated pressures, Tc and λ are predicted to decrease and the normalised specific heat jump remains unchanged.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Djalel Mebarki, Souad Dilmi, Saib Salima; salima.saib@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, Souad Louhibi-Fasla, , (2024-01-06), Phase stability and physical properties of lanthanum dicarbide under pressure, Philosophical Magazine, Vol:103, Issue:, pages:969, Taylor & Francis Online

    See publication
  • 2024-01-06
  • 2024-01-06

    Phase stability and physical properties of lanthanum dicarbide under pressure

    First-principles calculations of electronic parameters, mechanical and dynamical stabilities on superconducting properties of the body-centered tetragonal intermetallic lanthanum dicarbide LaC2 have been reported at zero and high pressures. The investigated properties have been established through both full-potential-linearized augmented plane wave (FP-LAPW) and plane-wave pseudopotential (PW-PP) approaches, in conjunction with the generalized gradient approximation (GGA). Our investigations validate that the LaC2 crystal has a mechanical and dynamical stability under normal conditions. The generalised mechanical stability criteria applied to compressed LaC2, suggest that the compound remains stable for pressures below 18.30 GPa. The evaluated superconducting critical temperature Tc and the electron–phonon coupling parameter λ at zero pressure are found to be in excellent concordance with the experimental data. Furthermore, at elevated pressures, Tc and λ are predicted to decrease and the normalised specific heat jump remains unchanged.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Djalel Mebarki, Souad Dilmi, Saib Salima; salima.saib@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, Souad Louhibi-Fasla, , (2024-01-06), Phase stability and physical properties of lanthanum dicarbide under pressure, Philosophical Magazine, Vol:103, Issue:, pages:969, Taylor & Francis Online

    See publication
  • 2024-01-06
  • 2024-01-06

    Phase stability and physical properties of lanthanum dicarbide under pressure

    First-principles calculations of electronic parameters, mechanical and dynamical stabilities on superconducting properties of the body-centered tetragonal intermetallic lanthanum dicarbide LaC2 have been reported at zero and high pressures. The investigated properties have been established through both full-potential-linearized augmented plane wave (FP-LAPW) and plane-wave pseudopotential (PW-PP) approaches, in conjunction with the generalized gradient approximation (GGA). Our investigations validate that the LaC2 crystal has a mechanical and dynamical stability under normal conditions. The generalised mechanical stability criteria applied to compressed LaC2, suggest that the compound remains stable for pressures below 18.30 GPa. The evaluated superconducting critical temperature Tc and the electron–phonon coupling parameter λ at zero pressure are found to be in excellent concordance with the experimental data. Furthermore, at elevated pressures, Tc and λ are predicted to decrease and the normalised specific heat jump remains unchanged.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Djalel Mebarki, Souad Dilmi, Saib Salima; salima.saib@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, Souad Louhibi-Fasla, , (2024-01-06), Phase stability and physical properties of lanthanum dicarbide under pressure, Philosophical Magazine, Vol:103, Issue:, pages:969, Taylor & Francis Online

    See publication
  • 2024-01-06
  • 2024-01-06

    Phase stability and physical properties of lanthanum dicarbide under pressure

    First-principles calculations of electronic parameters, mechanical and dynamical stabilities on superconducting properties of the body-centered tetragonal intermetallic lanthanum dicarbide LaC2 have been reported at zero and high pressures. The investigated properties have been established through both full-potential-linearized augmented plane wave (FP-LAPW) and plane-wave pseudopotential (PW-PP) approaches, in conjunction with the generalized gradient approximation (GGA). Our investigations validate that the LaC2 crystal has a mechanical and dynamical stability under normal conditions. The generalised mechanical stability criteria applied to compressed LaC2, suggest that the compound remains stable for pressures below 18.30 GPa. The evaluated superconducting critical temperature Tc and the electron–phonon coupling parameter λ at zero pressure are found to be in excellent concordance with the experimental data. Furthermore, at elevated pressures, Tc and λ are predicted to decrease and the normalised specific heat jump remains unchanged.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Djalel Mebarki, Souad Dilmi, Saib Salima; salima.saib@univ-msila.dz, nadir bouarissa; nadir.bouarissa@univ-msila.dz, Souad Louhibi-Fasla, , (2024-01-06), Phase stability and physical properties of lanthanum dicarbide under pressure, Philosophical Magazine, Vol:103, Issue:, pages:969, Taylor & Francis Online

    See publication
  • 2024-01-05
  • 2024-01-05

    Ab Initio Study of Fundamental Properties of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) halide perovskites Compounds

    A detailed computational study of structural, electronic, elastic, optical and thermoelectric properties of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) materials has been reported. The calculations are performed using the full-potential linearized augmented plane wave and the ultra-soft pseudo-potentials methods. The obtained structural parameters are in excellent accord with the available data in the literature. From 0.56 to 6.93 eV, the ACdX3 materials are found to be indirect band-gaps. The dielectric functions of the materials of interest are large near and in the middle ultraviolet regions. They become smaller in the far and extreme ultraviolet regions. The optical parameters of ACdX3 reveal that our active structures have higher dielectric constants, with a maximum absorption in the visible range reaching over 12600 cm−1. Furthermore, the ACdX3 are found to be elastically stable, ductile, anisotropic and relatively low hard materials. The fluctuation of Seebeck coefficient, electrical conductivity, electronic thermal conductivity, lattice thermal conductivity and figure of merit with respect to temperature have also been studied. A comprehensive analysis of the optoelectronics and thermoelectric nature with a given band gaps are carried out. This reflects the use of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) in solar cells, energy storage devices, photovoltaic devices, radiation detectors, photonic crystals, light emitting diodes and thermoelectric generators.

    Citation

    ADMIN Admin , ADMIN Admin , Saadi Berri; saadi.berri@univ-msila.dz, , (2024-01-05), Ab Initio Study of Fundamental Properties of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) halide perovskites Compounds, Emergent Materials, Vol:6, Issue:, pages:1009, Wiley Online Library

    See publication
  • 2024-01-05
  • 2024-01-05

    Ab Initio Study of Fundamental Properties of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) halide perovskites Compounds

    A detailed computational study of structural, electronic, elastic, optical and thermoelectric properties of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) materials has been reported. The calculations are performed using the full-potential linearized augmented plane wave and the ultra-soft pseudo-potentials methods. The obtained structural parameters are in excellent accord with the available data in the literature. From 0.56 to 6.93 eV, the ACdX3 materials are found to be indirect band-gaps. The dielectric functions of the materials of interest are large near and in the middle ultraviolet regions. They become smaller in the far and extreme ultraviolet regions. The optical parameters of ACdX3 reveal that our active structures have higher dielectric constants, with a maximum absorption in the visible range reaching over 12600 cm−1. Furthermore, the ACdX3 are found to be elastically stable, ductile, anisotropic and relatively low hard materials. The fluctuation of Seebeck coefficient, electrical conductivity, electronic thermal conductivity, lattice thermal conductivity and figure of merit with respect to temperature have also been studied. A comprehensive analysis of the optoelectronics and thermoelectric nature with a given band gaps are carried out. This reflects the use of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) in solar cells, energy storage devices, photovoltaic devices, radiation detectors, photonic crystals, light emitting diodes and thermoelectric generators.

    Citation

    ADMIN Admin , ADMIN Admin , Saadi Berri; saadi.berri@univ-msila.dz, , (2024-01-05), Ab Initio Study of Fundamental Properties of ACdX3 (A= K, Rb, Cs; and X= F, Cl, Br) halide perovskites Compounds, Emergent Materials, Vol:6, Issue:, pages:1009, Wiley Online Library

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

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  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-04
  • 2024-01-04

    Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides

    In order to expand the scope of application of ternary nitrides and explore more thoroughly their potential as novel materials, ab initio calculations founded on density functional theory are executed to examine the mechanical, electronic, optical and transport properties of Ca5Si2N6 and Sr5Ge2N6 nitrides. These compounds are thermodynamically stable established on coherent energy and enthalpy of formation, with Ca5Si2N6 having the best stability. The estimated values of elastic constants and their derived properties suggest that the items under examination are mechanically stable, ductile and elastically anisotropic. Electronic properties have been evaluated using the GGA and TB-mBJ exchange-correlation potentials. The band structure calculated via TB-mBJ reveals that these nitrides are semiconductors, where Ca5Si2N6 has a direct energy gap of 3.55 eV and Sr5Ge2N6 an indirect band-gap of 3.15 eV. By combining Debye temperature and band-gap values, it was concluded that the nitridosilicate compound can be used as phosphor material. According to the optical response, which was examined in terms of dielectric function, complex refractive index, absorption, reflectivity and energy damage function, the potential applications of Ca5Si2N6 and Sr5Ge2N6 have been discussed. Further, thermoelectric properties are computed utilizing the semi-classical Boltzmann transport notion. The obtained results show a large strength operator and depressed thermal conductivity driving to rising figure of merit values, particularly at 300 K (0.978–0.986), signifying that the studied ternary nitrides are favorable nominees for thermoelectric employments at both low and room temperatures.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Larbi Debache, Youcef Medkour, Fateh Djeghloul, Kamel Haddadi, Saadi Berri; saadi.berri@univ-msila.dz, Mohamed Kharoubi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, nadir Guechi, Abdelkarim Roumili, , (2024-01-04), Elastic, electronic, optical and thermoelectric properties of Ca5Si2N6 and Sr5Ge2N6 ternary nitrides, Journal of Physics and Chemistry of Solids, Vol:179, Issue:, pages:111405, Elsevier

    See publication
  • 2024-01-03
  • 2024-01-03

    The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials

    The structural parameters and elastic properties of rock-salt CaX (X = S, Se and Te) materials are explored employing the CASTEP code established on the density functional theory (DFT). The energy of exchange-correlation is calculated using the generalized gradient approximation (GGA). The convention between our outcomes related to the lattice parameter and experiment is 0.50%, 0% and 1% for CaS, CaSe and CaTe materials, respectively. The lattice constant augments when proceeding from CaS to CaSe to CaTe. This lowers also the modulus of compressibility. The studied materials present a weak elastic constants for C12 and C44. This signalizes that these materials are supplementary reluctant to the unidimensionelle compression than to the perversion of cisaillement. C11 increases very rapidly. However, C12 and C44 increase very slowly. The material stability of the structure for the results of interest is stable at zero pressure. A phase transition will happen at pressures of 25.20 GPa for CaSe and 20.10 GPa for CaTe. No phase transition has been detected for CaS up to 30 GPa. All studied materials have comported as fragile in the pressure range 0 to 4 GPa. The variation of energy under any little deformity is positive. The anisotropy indicates that all materials are anisotropic in the pressure range up to 30 GPa and they are more rigid along the axes 〈100〉.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelghani Khaldi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Laurent Tabourot, , (2024-01-03), The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials, Chemical Physics Impact, Vol:6, Issue:, pages:100237, Elsevier

    See publication
  • 2024-01-03
  • 2024-01-03

    The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials

    The structural parameters and elastic properties of rock-salt CaX (X = S, Se and Te) materials are explored employing the CASTEP code established on the density functional theory (DFT). The energy of exchange-correlation is calculated using the generalized gradient approximation (GGA). The convention between our outcomes related to the lattice parameter and experiment is 0.50%, 0% and 1% for CaS, CaSe and CaTe materials, respectively. The lattice constant augments when proceeding from CaS to CaSe to CaTe. This lowers also the modulus of compressibility. The studied materials present a weak elastic constants for C12 and C44. This signalizes that these materials are supplementary reluctant to the unidimensionelle compression than to the perversion of cisaillement. C11 increases very rapidly. However, C12 and C44 increase very slowly. The material stability of the structure for the results of interest is stable at zero pressure. A phase transition will happen at pressures of 25.20 GPa for CaSe and 20.10 GPa for CaTe. No phase transition has been detected for CaS up to 30 GPa. All studied materials have comported as fragile in the pressure range 0 to 4 GPa. The variation of energy under any little deformity is positive. The anisotropy indicates that all materials are anisotropic in the pressure range up to 30 GPa and they are more rigid along the axes 〈100〉.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelghani Khaldi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Laurent Tabourot, , (2024-01-03), The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials, Chemical Physics Impact, Vol:6, Issue:, pages:100237, Elsevier

    See publication
  • 2024-01-03
  • 2024-01-03

    The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials

    The structural parameters and elastic properties of rock-salt CaX (X = S, Se and Te) materials are explored employing the CASTEP code established on the density functional theory (DFT). The energy of exchange-correlation is calculated using the generalized gradient approximation (GGA). The convention between our outcomes related to the lattice parameter and experiment is 0.50%, 0% and 1% for CaS, CaSe and CaTe materials, respectively. The lattice constant augments when proceeding from CaS to CaSe to CaTe. This lowers also the modulus of compressibility. The studied materials present a weak elastic constants for C12 and C44. This signalizes that these materials are supplementary reluctant to the unidimensionelle compression than to the perversion of cisaillement. C11 increases very rapidly. However, C12 and C44 increase very slowly. The material stability of the structure for the results of interest is stable at zero pressure. A phase transition will happen at pressures of 25.20 GPa for CaSe and 20.10 GPa for CaTe. No phase transition has been detected for CaS up to 30 GPa. All studied materials have comported as fragile in the pressure range 0 to 4 GPa. The variation of energy under any little deformity is positive. The anisotropy indicates that all materials are anisotropic in the pressure range up to 30 GPa and they are more rigid along the axes 〈100〉.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelghani Khaldi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Laurent Tabourot, , (2024-01-03), The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials, Chemical Physics Impact, Vol:6, Issue:, pages:100237, Elsevier

    See publication
  • 2024-01-03
  • 2024-01-03

    The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials

    The structural parameters and elastic properties of rock-salt CaX (X = S, Se and Te) materials are explored employing the CASTEP code established on the density functional theory (DFT). The energy of exchange-correlation is calculated using the generalized gradient approximation (GGA). The convention between our outcomes related to the lattice parameter and experiment is 0.50%, 0% and 1% for CaS, CaSe and CaTe materials, respectively. The lattice constant augments when proceeding from CaS to CaSe to CaTe. This lowers also the modulus of compressibility. The studied materials present a weak elastic constants for C12 and C44. This signalizes that these materials are supplementary reluctant to the unidimensionelle compression than to the perversion of cisaillement. C11 increases very rapidly. However, C12 and C44 increase very slowly. The material stability of the structure for the results of interest is stable at zero pressure. A phase transition will happen at pressures of 25.20 GPa for CaSe and 20.10 GPa for CaTe. No phase transition has been detected for CaS up to 30 GPa. All studied materials have comported as fragile in the pressure range 0 to 4 GPa. The variation of energy under any little deformity is positive. The anisotropy indicates that all materials are anisotropic in the pressure range up to 30 GPa and they are more rigid along the axes 〈100〉.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelghani Khaldi, Nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Laurent Tabourot, , (2024-01-03), The pressure influence on structural parameters and elastic properties of rock-salt CaX (X=S, Se and Te) materials, Chemical Physics Impact, Vol:6, Issue:, pages:100237, Elsevier

    See publication
  • 2024-01-02
  • 2024-01-02

    Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys

    This work is an investigation of the band structure and related properties of α-LiBeAsxSb1-x half-Heusler alloys. The computations were performed with the help of density functional theory, using the alchemical mixing approximation that ABINIT code offers. In addition, several thermodynamic quantities were examined and discussed. Our obtained results correspond to previous data. The investigated alloy system was found to be an indirect (Γ→X) semiconductor for all alloy contents x, ranging from zero to one. The current findings show that for an appropriate choice of alloy content and temperature, α-LiBeAsxSb1-x may provide other opportunities for advancing new physical properties that can be applicable to novel electronic devices.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Benyettou Samia; samia.benyettou@univ-msila.dz, Saib Salima; salima.saib@univ-msila.dz, nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Alit Thatribud, , (2024-01-02), Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys, Physica Scripta, Vol:98, Issue:, pages:085926, IOP Science

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  • 2024-01-02
  • 2024-01-02

    Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys

    This work is an investigation of the band structure and related properties of α-LiBeAsxSb1-x half-Heusler alloys. The computations were performed with the help of density functional theory, using the alchemical mixing approximation that ABINIT code offers. In addition, several thermodynamic quantities were examined and discussed. Our obtained results correspond to previous data. The investigated alloy system was found to be an indirect (Γ→X) semiconductor for all alloy contents x, ranging from zero to one. The current findings show that for an appropriate choice of alloy content and temperature, α-LiBeAsxSb1-x may provide other opportunities for advancing new physical properties that can be applicable to novel electronic devices.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Benyettou Samia; samia.benyettou@univ-msila.dz, Saib Salima; salima.saib@univ-msila.dz, nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Alit Thatribud, , (2024-01-02), Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys, Physica Scripta, Vol:98, Issue:, pages:085926, IOP Science

    See publication
  • 2024-01-02
  • 2024-01-02

    Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys

    This work is an investigation of the band structure and related properties of α-LiBeAsxSb1-x half-Heusler alloys. The computations were performed with the help of density functional theory, using the alchemical mixing approximation that ABINIT code offers. In addition, several thermodynamic quantities were examined and discussed. Our obtained results correspond to previous data. The investigated alloy system was found to be an indirect (Γ→X) semiconductor for all alloy contents x, ranging from zero to one. The current findings show that for an appropriate choice of alloy content and temperature, α-LiBeAsxSb1-x may provide other opportunities for advancing new physical properties that can be applicable to novel electronic devices.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Benyettou Samia; samia.benyettou@univ-msila.dz, Saib Salima; salima.saib@univ-msila.dz, nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Alit Thatribud, , (2024-01-02), Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys, Physica Scripta, Vol:98, Issue:, pages:085926, IOP Science

    See publication
  • 2024-01-02
  • 2024-01-02

    Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys

    This work is an investigation of the band structure and related properties of α-LiBeAsxSb1-x half-Heusler alloys. The computations were performed with the help of density functional theory, using the alchemical mixing approximation that ABINIT code offers. In addition, several thermodynamic quantities were examined and discussed. Our obtained results correspond to previous data. The investigated alloy system was found to be an indirect (Γ→X) semiconductor for all alloy contents x, ranging from zero to one. The current findings show that for an appropriate choice of alloy content and temperature, α-LiBeAsxSb1-x may provide other opportunities for advancing new physical properties that can be applicable to novel electronic devices.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Benyettou Samia; samia.benyettou@univ-msila.dz, Saib Salima; salima.saib@univ-msila.dz, nadir Bouarissa; nadir.bouarissa@univ-msila.dz, Alit Thatribud, , (2024-01-02), Theoretical investigation of electronic, mechanical, piezoelectric and thermodynamic properties of half-heusler LiBeAsxSb1-x alloys, Physica Scripta, Vol:98, Issue:, pages:085926, IOP Science

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  • 2023-12-31
  • 2023-12-31

    The Effectiveness of monetary policy under the persistent public budget deficit in Algeria (2015-2022)

    This study aims to highlight the effectiveness of monetary policy in achieving its final objectives under the conventional and unconventional programs and mechanisms used to finance the public budget deficit in Algeria during the period (2015-2022). We found that these programs and mechanisms have made monetary policy in the service of persistent budget deficit financing, leading a limitation of the effectiveness of monetary policy in achieving its final objectives. Keywords: monetary policy effectiveness, monetary policy objectives, public budget, budget financing programs. Jel Classification: E52. E58.H62.

    Citation

    Ramdane KEZZAR , ADMIN Admin , Salaheddine.saoudi@univ-msila.dz, , (2023-12-31), The Effectiveness of monetary policy under the persistent public budget deficit in Algeria (2015-2022), Forum For Economic Studies and Research Journa, Vol:7, Issue:2, pages:583-599, Université de Djelfa-Algérie.

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  • 2023-12-30
  • 2023-12-30

    CHARACTERIZATION OF STAPHYLOCOCCI IN SHECAMEL MILK: EVALUATION OF ZOONOTIC AND ENVIRONMENTAL THREATS IN PERIURBAN CAMEL HERDS OF ZIBAN REGION, ALGERIA

    The subclinical mastitis is a major scourge in the camel farms.The pathogenic staphylococci are among the dominant causative agents of mastitis.The first part of the present study aims to estimate the prevalence of Staphylococcus spp. in overall milk per udder samples (n = 18) randomly selected among three camel herds in the region of Biskra. Following an epidemiological investigation, raw milk underwent bacteriological analysis emphasizing the identification and enumeration of staphylococci. In the second part of study, we investigated the impact of the anatomical position of the udder quarters on the infection rates due to Staphylococcus spp. Therefore from six she-camels reared in two farms, 24 raw milk samples were collected. Results show that the high rates and the diversity of isolated Staphylococcus spp. reflect inappropriate husbandry practices and illusory health status of the main camel herds. The milk contamination rates recorded at the herds H1 (Loutaya), H2 (Ain El'Kerma), H3 (Oumache) and H5 (Loutaya) do not conform to the limited value in the Algerian Official Journal.Also, it is an indicator of the perennity of subclinical mastitis insidiously. The infection rates and the isolated species of staphylococci are not identical for all the quarters in the same she-camel which were confirmed by the Kendall Tau-B correlation test (p = 0.05). It would be important to apply the standards H.A.C.C.P. either at the herd level, during milk collection and in milk marketing shops. Vulgarization of both herders and consumers would minimize the risk of food-borne illnesses.

    Citation

    ADEL Mammeri , ADMIN Admin , Attir Badreddine, , (2023-12-30), CHARACTERIZATION OF STAPHYLOCOCCI IN SHECAMEL MILK: EVALUATION OF ZOONOTIC AND ENVIRONMENTAL THREATS IN PERIURBAN CAMEL HERDS OF ZIBAN REGION, ALGERIA, Agricultura, Vol:128, Issue:4, pages:136-149, Cluj-Napoca-Romania

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  • 2023-12-20
  • 2023-12-20

    Codage des données en traitement d'images

    La numérisation permet de coder l'information de telle façon qu'elle soit manipulable par les ordinateurs. Les images numérisées sont ainsi affichées sur les écrans, créées par des appareils photographiques, modifiés par des logiciels de retouche ou partagées sur les réseaux. Il existe plusieurs façons de numériser une image. Les formats bitmap que l'on utilise pour les photographies se basent sur un tableau de points (ou pixels), chacun étant associé à un nombre qui représente une couleur. La représentation la plus simple d'une image est matricielle. Il existe des formats d'images qui utilisent moins d'information tout en les représentant avec une qualité qui reste très fidèle. Après la numérisation d'un signal, on a deux types de représentations pour les signaux numérisés : on utilise un algorithme de compression sans pertes, qui préserve intégralement l'information tout en réduisant la quantité de mémoire utilisée ou un algorithme de compression avec pertes est utilisé pour dégrader l'information pour réduire davantage la quantité de mémoire utilisée.

    Citation

    Nassereddine Mouhoub , ADMIN Admin , ADMIN Admin , Benmehenni Nesrine, ,(2023-12-20), Codage des données en traitement d'images,AI4IoT'23,Sétif University

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  • 2023-12-20
  • 2023-12-20

    Codage des données en traitement d'images

    La numérisation permet de coder l'information de telle façon qu'elle soit manipulable par les ordinateurs. Les images numérisées sont ainsi affichées sur les écrans, créées par des appareils photographiques, modifiés par des logiciels de retouche ou partagées sur les réseaux. Il existe plusieurs façons de numériser une image. Les formats bitmap que l'on utilise pour les photographies se basent sur un tableau de points (ou pixels), chacun étant associé à un nombre qui représente une couleur. La représentation la plus simple d'une image est matricielle. Il existe des formats d'images qui utilisent moins d'information tout en les représentant avec une qualité qui reste très fidèle. Après la numérisation d'un signal, on a deux types de représentations pour les signaux numérisés : on utilise un algorithme de compression sans pertes, qui préserve intégralement l'information tout en réduisant la quantité de mémoire utilisée ou un algorithme de compression avec pertes est utilisé pour dégrader l'information pour réduire davantage la quantité de mémoire utilisée.

    Citation

    Nassereddine Mouhoub , ADMIN Admin , ADMIN Admin , Benmehenni Nesrine, ,(2023-12-20), Codage des données en traitement d'images,AI4IoT'23,Sétif University

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  • 2023-12-18
  • 2023-12-18

    تقييم جودة الخدمة الصحية بالمؤسسات العمومية الصحية بولاية المسيلة للفترة (2019-2022) من منظور التغطية الصحية الشاملة

    الملخص: من خلال هذه الورقة البحثية حاولنا إبراز مدى جودة الخدمات الصحية بالمؤسسات الصحية العمومية بولاية المسيلة للفترة الممتدة من (2019-2022) وذلك بالإعتماد على مؤشرات التغطية الصحية الشاملة مقارنة مع عدد السكان في نفس الفترة. وقد خلصت الدراسة إلى أن معدلات التغطية الصحية الشاملة بولاية المسيلة ضعيفة وهذا ما ينقص من أداء القطاع الصحي العمومي بالولاية وهذا ما يتيح للقطاع الخاص الفرصة لنجاح أداءه على حساب القطاع الصحي العمومي بالولاية. الكلمات المفتاحية: الخدمة الصحية-جودة الخدمة الصحية –التغطية الصحية الشاملة-المؤسسات العمومية الصحية بولاية المسيلة ABSTRACT Through this research paper, we tried to highlight the quality of health services in public health institutions in the state of M’sila for the period extending from (2019-2022) by relying on indicators of comprehensive health coverage compared to the population in the same period. The study concluded that comprehensive health coverage rates in the state of M'sila are weak, and this detracts from the performance of the public health sector in the state, and this is what gives the private sector the opportunity to succeed in its performance at the expense of the public health sector in the state.

    Citation

    Nabila MIMOUNE , ADMIN Admin , ,(2023-12-18), تقييم جودة الخدمة الصحية بالمؤسسات العمومية الصحية بولاية المسيلة للفترة (2019-2022) من منظور التغطية الصحية الشاملة,تقييم جودة الخدمة الصحية بالمؤسسات العمومية الصحية بولاية المسيلة للفترة (2019-2022) من منظور التغطية الصحية الشاملة,سطيف

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  • 2023-12-15
  • 2023-12-15

    Effects of Temperature and Solar Radiation on Photovoltaic Modules Performances Installed in Oued Keberit Power Plant, Algeria

    This study presents the measured data of the "Oued Keberit" PV plant over a period of four months (January to April 2022) after nearly 6 years of outdoor exposure to the climate of Souk Ahras, eastern Algeria, in order to evaluate the performance of the solar PV system. This evaluation includes the calculation of PV system performance variables such as module performance, final performance and performance of the module references, system losses, photovoltaic friendly efficiency, system efficiency, performance ratio and capacity factor based on measured data, allowing comparison of actual PV system performance and reference values determined by manifacturers. The results showed that the four-month average values of the parameters Eac, Yr, Yf, PR, , CF are 1.06375125MWh, 4.08h, 4.25h, 1.06, 16.40%, 60.28% respectively. Also, the high efficiency of the photovoltaic system was obtained during winter, due to the low temperature and the sufficient amount of solar radiation. However, the photovoltaic system generates a lot of energy during summer, although there is less output than during the winter season. This is because summer has maximum values for sunshine duration and solar radiation.

    Citation

    Aissa CHOUDER , ADMIN Admin , Aissa Chouder, , (2023-12-15), Effects of Temperature and Solar Radiation on Photovoltaic Modules Performances Installed in Oued Keberit Power Plant, Algeria, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, Vol:112, Issue:1, pages:204-2016, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences

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  • 2023-12-13
  • 2023-12-13

    Evaluation du bien-être dans quelques exploitations aquacoles de la région de Biskra

    Durant cette étude, on a évalué le bien-être des poissons d’aquaculture dans la région de Biskra. Ainsi, on a réalisé une enquête sur le terrain et des interviews avec un échantillon d'aquaculteurs. Nous avons utilisé un questionnaire composé de plusieurs questions portant sur quatre volets principaux, aussi on a évalué la qualité microbiologique (coliformes fécaux et FTAM) et physico-chimique (température, acidité, salinité, conductivité électrique et total des solides dissous) de l'eau d'élevage des poissons. Les résultats des enquêtes sont favorables pour un bien-être acceptable, au niveau des quatre exploitations visitées. Les résultats du dénombrement des coliformes fécaux et des FTAM, indiquent que l'eau d'élevage présente un statut acceptable, par rapport aux normes reconnues. En ce qui concerne l'analyse physico-chimique, la moyenne de l'acidité varie de 7,3 à 7,7, la température de 23 à 28 ̊C, la salinité de 2,16 à 4,55 ms/cm, la conductivité de 3,31 à 9,09 ms/cm et les matières solides totales de 1,71 à 6,06 mg/L. L'aquaculture dans la zone d'étude est principalement intégrée à l'agriculture, et parmi les espèces de poissons les plus répandus, on retrouve le tilapia rouge et le poisson-chat. De plus, les investisseurs utilisent, principalement, deux types de bassins : en béton et en PVC. Les données collectées durant cette étude, soulignent l'importance de vulgariser les autres aquaculteurs moins avertis, sur la nécessité de respecter le bien-être en élevage aquacole.

    Citation

    ADEL Mammeri , ADMIN Admin , Attir Badreddine, Atmane Hanane, Ghaddab Dounia Maissa, Chabira Djouhaina, ,(2023-12-13), Evaluation du bien-être dans quelques exploitations aquacoles de la région de Biskra,Aqua Sem 2023,Université de Biskra, Département d'agronomie.

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  • 2023-12-12
  • 2023-12-12

    الترويح في المجال الرياضي

    الدر الايجابي لعملية الترويح باستعمال الانشطة الرياضية التربوية لدى تلاميذ المرحلة الابتدائية

    Citation

    azedine mahdi , ADMIN Admin , medjili salah , ,(2023-12-12), الترويح في المجال الرياضي,الندوة العلمية الثانية حول الانشطة الترويحية في المرحلة الابتدائية,جامعة زيان عشور بالجلفة

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  • 2023-12-11
  • 2023-12-11

    أخلاقبات الذكاء الاصطناعي في ظل القيم وحقوق الإنسان

    تناولت هذه المداخلة أهم أخلاقبات الذكاء الاصطناعي في ظل القيم وحقوق الإنسان

    Citation

    ABDELHAK Barkat , ADMIN Admin , ,(2023-12-11), أخلاقبات الذكاء الاصطناعي في ظل القيم وحقوق الإنسان,سؤال الأخلاق في الذكاء الاصطناعي,جامعة تيارت

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  • 2023-12-04
  • 2023-12-04

    Performance study of PV power Plants in Algeria

    This paper presents a review of our previous work on the PV performance study. The aim of this study is to adapt the IEC 61724 standard [1] for the performance study of a Ain Skhouna (Saida, Algeria) PV plant for a period of one month. Likewise, the IEC 61724 standard application for the performance study for two PV power plants in Algeria (Adrar and Ain Skhouna) with different climates And, finely, the effect of ambient temperature on total losses, system efficiency, and performance ratio of the two PV power plants was studied. The International Energy Agency (IEA) has defined performance parameters that are detailed in IEC 61724 [1] in order to analyze the performance of any PV power plant. These variables provide data on the system's capacity to produce energy, its use of solar energy resources, and the overall impact of system losses [2,3]. These indicators include the energy generated by the PV array system (Edc), the energy output or energy fed to the utility grid (Eac), the reference yield (Yr), the array yield (Ya), the final yield (Yf), the performance ratio (PR), the system losses (LS), the capture losses (LC), system efficiency (ηsys), PV efficiency (ηPV), and inverter efficiency (ηinv). Two photovoltaic power plants are taken into consideration in this study: the Adrar PV power plant and the Ain Skhouna (Saida) PV power plant. These power plants are situated in two different climates: semi-arid for Saida and hot dry desert (hyper-arid) for the Adrar region. A data logger is installed in each of the two PV power plants to track and record the output of DC power from solar modules, AC power from inverters, and weather data. These data sets are captured every 15 minutes. All the results noted in this study were obtained according to the performance parameters specified by the International Energy Agency (IEA. Two different types of data are used: the data from the complete Ain Skhouna data for the year 2018[3], and the complete Adrar data for the year 2018[4].

    Citation

    Razika IHADDADENE , Nabila IHADDADENE , ADMIN Admin , ,(2023-12-04), Performance study of PV power Plants in Algeria,Conférence Internationale sur Energies vertes et traitement des eaux,Sousse (Tunisia)

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  • 2023-11-27
  • 2023-11-27

    Mastering Constructive Alignment in Course Design”

    استراتيجيات التعليم في قطر 2018/2022

    Citation

    Nabila DJAIDJA , ADMIN Admin , ,(2023-11-27), Mastering Constructive Alignment in Course Design”,“Mastering Constructive Alignment in Course Design”,جامعة قطر الدوحة

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  • 2023-11-27
  • 2023-11-27

    الرقمنة كالية لحوكمة اداء الادارة العمومية -قطاع الصحة انموذجا

    ملخص: تحاول النظم السياسية في الحكومات الديمقراطية الراسخة التسويق لكل منتجاتها الفكرية سواء من الناحية النظرية أو التطبيقية نحو مختلف المجتمعات التي تعرف مسارات متفاوتة في العملية الديمقراطية، ونجد منها المجتمعات الفتية أو الناشئة والتي تسعى إلى توسيع دائرة نجاحها في كل المجالات والأصعدة من خلال محاكاة التغييرات والتكيف معها في ظل مقدرات الدولة السانحة لمنطق التفاعل والتناغم مع مختلف البرامج، أين تعد مسألة الرقمنة ضمن عالم المعلوماتية الرائدة في العالم، والتي أضحت حاجة ومسارا إلزاميا أثناء أداء وحركة النظام السياسي، ولدى كل مكوناته وخاصة التي تدخل ضمن دائرة الأجهزة الرسمية، لما لها من الخصائص المعبرة عن شموليتها وشرعيتها وتمتعها بعناصر الإقناع، الإكراه والإجبار في تنفيذ مشاريعها ونحو تحقيق الأهداف المتمثلة في الاقتصاد في الوقت والتكلفة وجودة الخدمة ووصول المعلومة واعتماد الشفافية وغيرها، كما وتعد الرقمنة في مجال الصحة في الجزائر أسلوبا جديدا اعتمدت عليه الدولة في سياق التكيف المؤسساتي الحديث والذي يعمل على تحسين و الخدمة العمومية في الجانب الإداري، العلاجي والوقائي. الكلمات المفتاحية: الرقمنة، الإدارة العامة، الجزائر، الصحة، الحوكمة. Summary : The political systems in established democratic governments try to market all their intellectual products, whether theoretically or practically, towards various societies that know varying paths in the democratic process, including young or emerging societies that seek to expand the circle of their success in all fields and levels by simulating and adapting to changes in light of the capabilities of the state that are available for the logic of interaction and harmony with various programs, where the issue of digitization within the world's leading world of informatics, which has become a need and a mandatory path. During the performance and movement of the political system, and all its components, especially those that fall within the circle of official bodies, because of their characteristics that express their comprehensiveness, legitimacy and enjoyment of elements of persuasion, coercion and coercion in the implementation of their projects and towards achieving the goals of saving time, cost, quality of service, access to information, adopting transparency, etc., digitization in the field of health in Algeria is a new method adopted by the state in the context of modern institutional adaptation, which improves public service in the administrative aspect. and therapeutic and prophylactic... Keywords: digitalization, public administration, Algeria, health, governance.

    Citation

    Oussama Khodja , ADMIN Admin , خوجة سهام, ,(2023-11-27), الرقمنة كالية لحوكمة اداء الادارة العمومية -قطاع الصحة انموذجا,الادارة الرقمية ودورها في عصرنة الادارة العمومية بالجزائر,كلية العلوم الاجتماعية والانسانية، جامعة المسيلة- الجزائر-،

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  • 2023-11-22
  • 2023-11-22

    DEVELOPMENT AND CHARACTERIZATION OF AN ELECTROLYTE MEMBRANE FOR AN ACCUMULATOR

    The growth in energy consumption follows an exponential logic due to demographic explosions and the strong economic growth of developing countries. The world of scientific research aims to control clean, renewable and recyclable resources and energies on a planetary scale, with the aim of gradually reducing dependence on fossil fuels, within the framework of As part of this work, we developed nano-composites based on polyvinylidene fluoride (PVDF) and a lithium perchlorate filler (LiClO4). This work was devoted to the development of nanocomposite mixtures by applied routes (reverse phase route). The membranes obtained were then characterized by scanning enthalpy calorimetry (DSC) and by TGA thermogravimetric analysis and measurement of electrical conductivity by the four-point method. These different techniques made it possible to demonstrate the presence and dispersion of LiClO4 in the polymer matrix.

    Citation

    Serine ARIS , ADMIN Admin , ,(2023-11-22), DEVELOPMENT AND CHARACTERIZATION OF AN ELECTROLYTE MEMBRANE FOR AN ACCUMULATOR,The First National Conference Of Materials Sciences And Renewable Energy,Relizane, Algeria

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    • Default case...
  • 2023-11-16
  • 2023-11-16

    Determining Nutritive Value of Dry Ash Leaves (Fraxinus Angustifolia) Harvested in Fall via the Regression Method for Growing Rabbits

    Détermination de la valeur nutritive de sources alimentaire alternatives locales.

    Citation

    Hocine GUERMAH , ADMIN Admin , ,(2023-11-16), Determining Nutritive Value of Dry Ash Leaves (Fraxinus Angustifolia) Harvested in Fall via the Regression Method for Growing Rabbits,ICVALS 2023: International Conference on Veterinary, Agriculture and Life Sciences,Turquie

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  • 2023-11-15
  • 2023-11-15

    « Towards Sustainable, Digitizing public transportation in Bou Saada »

    The use of public transportation in cities is one of the most effective and sustainable solutions by taking into account the environmental aspect of reducing emissions and reducing traffic congestion, as well as the social aspect of the affordable and accessible transportation options offered by public transportation to communities around the world to promote efficiency and equity in transport services and interneighborhood justice and development. The adoption of digital transformation has revolutionized various sectors including transport, where accurate and up-to-date information is critical for efficient and flexible public transportation operations, especially passenger access and use of public transport services. The inclusion of digitization can be achieved through the use of bus frequency modeling techniques, where planners and transport engineers help make informed decisions to improve service levels, reduce waiting times and improve access to the transport network. Among the technologies and tools that can be employed in the digitization of the transport sector are geographic information systems (GIS), which have significantly changed the way we understand and analyze spatial data, and have many benefits and implications when used to provide information about transport and their ability to enhance intelligent transport systems by mapping the path and improving it and showing real-time and understandable maps in the formation of passenger options. Through this research, we will examine how improving bus frequency and digitizing transport information can foster sustainable transport practices, improve user experiences and improve the operational efficiency of public transportation. Our focus will be on the city of Bou Saada as an example of the study. Keywords: public transportation, digitization, Bousaada city, GIS, sustainability.

    Citation

    malika ouzir , ADMIN Admin , ,(2023-11-15), « Towards Sustainable, Digitizing public transportation in Bou Saada »,la quatrième édition de la journée mondiale des GIS DAY ALGERIA 2023,université Badhi Mokhtar , Annaba

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  • 2023-11-11
  • 2023-11-11

    Valorisation phytochimique de la plante médicinale Melissa officinales et l’évaluation de l’activité

    La flore algérienne riche de plusieurs espèces de plantes médicinales encore peu ou pas étudiées, mais dotées de réelles propriétés pharmacologiques et on peut les considères comme des solutions alternatives. Cette étude est consiste à la valorisation de espèces médicinale Melissa officinales de la famille des Lamiaceae qui est très répandu dans la région de Msila, l’objectif de ce travail est de connaître les composés bioactifs présents dans celle-ci, ainsi l’évaluation de l’activité antioxydante. Nous avons réaliser l’extraction solide – liquide avec l’éthanol , le criblage phytochimique nous a permis de mettre en évidence la présence des alcaloïdes, sucres, phénols, glycosides, protéines, acides aminés, flavonoïdes, tanins, saponines et coumarine en différentes quantités. Et concernant L'analyse qualitative par chromatographie sur couche mince a révélé la présence des : acide phénolique, flavons, Anthocyanidine, flavonones, isoflavonoïdes, coumarine.Le procédé de dosage nous a permis de montrer que le taux des polyphénols et des flavinoides sont estime a 1,875 mg EAG/g d'extrait, et a 5,27 μg de EQ/mg respectivementt. Pour l'activité antioxydante de l’extrait éthanolique a été évaluer par la méthode de piégeage du radical libre2,2- diphenyl-1- picrylhydrazyl (DPPH)., une concentration inhibitrice de 50 / des radicaux libres (IC50) de 0,17mg/m. Pour conclu la plante est riche en composes bioactifs qu’on peut les utiliser dans différents domaines ainsi on peut même développer cette étude via la réalisation et le test de différentes autres activistes biologique

    Citation

    HAMDI Bendif , ADMIN Admin , ,(2023-11-11), Valorisation phytochimique de la plante médicinale Melissa officinales et l’évaluation de l’activité,2ème Séminaire National sur les Applications Thérapeutiques et Agroalimentaires des Substances Naturelles (ATASN'2).,Centre Universitaire Abedelhafid BOUSSOUF- Mila Algeria

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  • 2023-11-09
  • 2023-11-09

    Phytochemical and biological potentialofPrickly pear (Opuntia ficus-indica) extracts from M’sila(Algeria)

    ABSTRACTArticle history: Received 14February2023Revised 31Mai2023Accepted 09November2023The cladodes juice and seedsoil obtained from the prickly pear (Opuntia ficus-indca)grown in M’sila, Algeriaareinvestigated inthis work.The objective of the present study was to evaluate theirphysicochemical composition,polyphenols and flavonoid content, antioxidant potentialby DPPH testand antibacterial activities.The results of this experimental study showedthat leaf bud juice presented thehighest yield of79.02%.Leaf juice was rich in polyphenols (4.6 g/100 g) and flavonoids (38.35 mg/100 g). While, the study revealed that the seedsoil extracts presented a weak yield of 5%.Leafy sap from spinyspecies showshigh antioxidant activityand an antibacterialeffect on: S.aurous, E.coli, S.typhimirum, S.marcesscens. Whereas,the antibacterial activities were as follows:for leafy sap from spinyspecies E. coli, P. aeruginosa,S. typhimirum andK. pneumoniaestrains wererelatively resistant to oil,E.coliand S. marcescensstrainswere relativelyresistant to cold-pressed oil. The threeoil varietiescold,90°, and 160°pressed oil, were the most proven oils tobe effective against E. coli, P. aeruginosa, S.typhimirum and K. pneumonia.

    Citation

    HAMDI Bendif , Hanane KHALFA , LARBI Derbak , ADMIN Admin , , (2023-11-09), Phytochemical and biological potentialofPrickly pear (Opuntia ficus-indica) extracts from M’sila(Algeria), Alger.j. biosciences04, Vol:4, Issue:2, pages:71-76, univ eloued algeria

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  • 2023-11-07
  • 2023-11-07

    أهمية الشمول املالي والتحديات التي تواجهه في الجزائر

    الشمول املالي مصطلح تم تداوله في اآلونة األخيرة بكثرة، كونه العملية التي تسمح بوصول أكبر عدد من األفراد إلى النظام املالي الرسمي . وازداد الطلب عليه خاصة مع انتشاروباء كورونا، ويعود ذلك لألهمية الكبيرة التي يؤديها الشمول املالي، فهو يعمل على دعم االستقرار املالي وتوصيل الخدمات املالية املفيدة إلى األفراد واملؤسسات بطرق سهلة ومبتكرة وبتكاليف معقولة. لذا نهدف ومن خالل هذه الدراسة ’إلى التعرف على مفهوم الشمول املالي، ومن ثم أهميته والتحديات التي تواجهه في الجزائر. وفي سبيل ذلك قمنا بتوزيع استبيان على عينة من املهنيين واألساتذة الجامعيين، وباستخدام االختبارات الالمعلمية، وبالتحديد اختباراإلشارة، تبين أن هناك مجموعة من التحديات التي تواجه الشمول املالي في الجزائر، منها التي تتعلق باملؤسسات املالية، وتحديات تتعلق بعوامل اجتماعية ودينية، باإلضافة إلى تحديات أخرى . الكلمات املفتاحية: الشمول املالي، الشمول املالي الرقمي، التكنولوجيا املالية، االستقراراملالي، التحديات.

    Citation

    Mabrouka HADJAR , ADMIN Admin , ,(2023-11-07), أهمية الشمول املالي والتحديات التي تواجهه في الجزائر,تطبيقات الذكاء االصطناعي والتكنولوجيا املالية وسبل تحقيق الشمول املالي,جامعة سوق أهراس

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  • 2023-11-04
  • 2023-11-04

    Effect of pH on raw water treatment at El-Karma WWTP (Oran)

    The criteria for choosing a coagulant are numerous. Aluminum-based coagulants iron and even synthetic polymers have adverse effects on human health and the environment. Our goal is to look for a plant substituent. For this, we used the seeds of Moringa oleifera for the treatment of raw water from the WWTP of El Karma (Oran) by the coagulation/flocculation process in jar-test. The seeds were used in powder and solution at different concentrations. We optimized the pH parameter for different doses of bioflocculant. The stirring speed was maintained at 250 rpm for coagulation and 50 rpm for flocculation. The results obtained showed that the use of bioflocculant in solution is more effective than its use in powder. The pH optimization showed that at pH 7 turbidity decreases from 4096 NTU to 25 NTU. While at pH 5, turbidity decreases from 4096 NTU to 238 NTU. With the bioflocculant powder, the turbidity obtained is 218 NTU at pH 7 and 278 NTU at pH 5. Keywords – Moringa oleifera, Optimization, Bioflocculants, Raw water, Turbidity.

    Citation

    Khalida BEKRENTCHIR , ADMIN Admin , ,(2023-11-04), Effect of pH on raw water treatment at El-Karma WWTP (Oran),2nd International Conference on Contemporary Academic Research ICCAR 2023,Konya, Turke

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  • 2023-10-10
  • 2023-10-10

    تاثير العوامل المناخية في تخطيط المساحات الخضراء في المناطق شبه الجافة دراسة حالة المسيلة

    تحدثت الاطروحة عن تاثير العوامل المناخية وخاصة الصعبة منها في تخطيط المساحات الخضراء في منطقة شبه جافة وهي مدينة المسيلة ذات التساقط الضعيف

    Citation

    BoudjemaaKHALFALLLAH , ADMINAdmin , صغيري جمال, ,(2023-10-10); تاثير العوامل المناخية في تخطيط المساحات الخضراء في المناطق شبه الجافة دراسة حالة المسيلة,جامعة الاخوة منتوري قسنطينة 1,

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  • 2023-10-10
  • 2023-10-10

    عصرنة الادارة الجبائية كاستراتيجية للحد من ظاهرة التهرب الضريبي في الجزائر

    تهدف هذه الدراسة إلى تسليط الضوء على استراتيجية عصرنة الإدارة الجبائية ودورها في الحد من ظاهرة التهرب الضريبي في الجزائر، حيث تم التطرق إلى ماهية التهرب الضريبي بالإضافة إلى أهم الإصلاحات التي عرفتها الإدارة الجبائية في الجزائر ومحاولة إبراز دور هذه الإصلاحات في تقليص حجم التهرب الضريبي في الجزائر وذلك من خلال تحليل بعض الإحصائيات، وتوصلت الدراسة إلى أن الإدارة الجبائية في الجزائر مازالت تواجه بعض التحديات التي تحول للوصول للأهداف المرجوة فيما يخص الحد من ظاهرة التهرب الضريبي أهما الاقتصاد الموازي و ظهور التجارة الالكترونية كما قدمنا في هذه الدراسة مجموعة من التوصيات لتجاوز هذه التحديات منها العمل على استقطاب القطاع الموازي، بالإضافة إلى رقمنه قطاع الضرائب والاعتماد على تكنولوجيا المعلومات ، فرض عقوبات صارمة على المتهربين من دفع الضرائب باعتبارها جريمة مالية في حق الخزينة العمومية، بالإضافة إلى تكوين موظفي الإدارة الجبائية تكوينا جيدا وتوعيتهم بأهمية الالتزام بأخلاقيات العمل الكلمات المفتاحية: التهرب الضريبي، عصرنة الإدارة الجبائية في الجزائر.

    Citation

    Mabrouka HADJAR , ADMIN Admin , ,(2023-10-10), عصرنة الادارة الجبائية كاستراتيجية للحد من ظاهرة التهرب الضريبي في الجزائر,أثر البيئة المحاسبية على جودة التقارير والقوائم المالية للمؤسسات الاقتصادية في الجزائر,المسيلة

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  • 2023-10-03
  • 2023-10-03

    POSITIVE COHEN p−NUCLEAR m−HOMOGENEOUS POLYNOMIALS

    In this paper we introduce the concept of positive Cohen p−nuclear polynomials between Banach lattice spaces. We give an analogue to Pietsch domination theorem and we study some properties concerning this notion.

    Citation

    Abdelmoumen TIAIBA , ADMIN Admin , ADMIN Admin , ADMIN Admin , Asma Hammou, Amar Belacel, Bougoutaia Amar, , (2023-10-03), POSITIVE COHEN p−NUCLEAR m−HOMOGENEOUS POLYNOMIALS, Surveys in Mathematics and its Applications, Vol:18, Issue:1, pages:107-121, https://www.utgjiu.ro/math/sma

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  • 2023-10-03
  • 2023-10-03

    POSITIVE COHEN p−NUCLEAR m−HOMOGENEOUS POLYNOMIALS

    In this paper we introduce the concept of positive Cohen p−nuclear polynomials between Banach lattice spaces. We give an analogue to Pietsch domination theorem and we study some properties concerning this notion.

    Citation

    Abdelmoumen TIAIBA , ADMIN Admin , ADMIN Admin , ADMIN Admin , Asma Hammou, Amar Belacel, Bougoutaia Amar, , (2023-10-03), POSITIVE COHEN p−NUCLEAR m−HOMOGENEOUS POLYNOMIALS, Surveys in Mathematics and its Applications, Vol:18, Issue:1, pages:107-121, https://www.utgjiu.ro/math/sma

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  • 2023-10-03
  • 2023-10-03

    POSITIVE COHEN p−NUCLEAR m−HOMOGENEOUS POLYNOMIALS

    In this paper we introduce the concept of positive Cohen p−nuclear polynomials between Banach lattice spaces. We give an analogue to Pietsch domination theorem and we study some properties concerning this notion.

    Citation

    Abdelmoumen TIAIBA , ADMIN Admin , ADMIN Admin , ADMIN Admin , Asma Hammou, Amar Belacel, Bougoutaia Amar, , (2023-10-03), POSITIVE COHEN p−NUCLEAR m−HOMOGENEOUS POLYNOMIALS, Surveys in Mathematics and its Applications, Vol:18, Issue:1, pages:107-121, https://www.utgjiu.ro/math/sma

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  • 2023-09-13
  • 2023-09-13

    A Jaccard Factor-Based Heuristic for the Set k-Cover Problem in Wireless Sensor Networks

    The applications of a wireless sensor network rely heavily on the network’s ability to function for an extended period. By separating the sensors into groups, each of which may keep an eye on the entire area of interest and be activated alternately, the system’s lifetime can be maximized. However, determining the most significant number of different sensor covers necessitates solving the NP-complete set k-cover issue. This work presents an improved greedy approach to the set k-cover problem based on the Jaccard Similarity Coefficient. The latter is a statistical method used to understand the similarity and diversity between sample sets. Moreover, the quality of the produced solution is improved by removing duplicate sensors for each set cover. The effectiveness of the proposed approach was compared to some greedy-based methods from the literature based on 1000 widely used benchmark instances. Computational results demonstrate its efficacy in producing high-quality solutions within acceptable computational time, especially when the problem scale increases

    Citation

    Nassereddine Mouhoub , ADMIN Admin , Salaheddine Balamane, Salim Bouamama, ,(2023-09-13), A Jaccard Factor-Based Heuristic for the Set k-Cover Problem in Wireless Sensor Networks,3rd International Conference on Computing and Information Technology (ICCIT),Saudi Arabia

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  • 2023-07-13
  • 2023-07-13

    معايير الكتابة العلمية بين الحاضر والمستقبل

    تطور الكتابة العلمية بين الحاضر والمستقبل

    Citation

    YAMENA Ismaili , ADMIN Admin , ,(2023-07-13), معايير الكتابة العلمية بين الحاضر والمستقبل,معايير الكتابة العلمية,أكاديمية إيفاد الهلمية

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  • 2023-07-03
  • 2023-07-03

    NEW MODELING AND ENHANCED CONTROL STRATEGY FOR GRID-CONNECTED FOUR-LEG INVERTER WITHOUT PHASE-LOCKED LOOP AND PARK’S TRANSFORMATION

    This paper proposes an enhanced voltage-oriented control strategy (EVOC) based on super twisting sliding mode control (STSMC) for a grid-connected four-leg source voltage inverter (GC-FLVSI) in the synchronous rotating frame (dq0–frame) without using a phase-locked loop (PLL) and Park's transformation. The proposed strategy is used not only to control the dq0–axes FLVSI inject currents but also to derive the mathematical model of the GC-FLVSI in the dq0–frame based on the direct instantaneous power control theory (DPC) and to eliminate the impact of PLL and Park's transformation. The principle of the proposed EVOC strategy is analyzed in detail. The STSMC is used for accurate dq0–axes FLVSI inject current control, and it can result in sinusoidal currents with high quality, high robustness against parametric variations, and low chattering with easy implementation. Finally, the superiority of the proposed EVOC-STSMC strategy in terms of complexity, response, steady-state errors, robustness, total harmonic distortion (THDs) mitigation, neutral current reduction, and robustness against parameter variations is verified through comparative analysis with the EVOC strategy based on the PI controller (EVOC-PIC).

    Citation

    ALI CHEBABHI , AL-DWA Ala Addin Mohammed Mohammed Hussein , MABROUK Defdaf , ADMIN Admin , ABDELHALIM KESSAL, , (2023-07-03), NEW MODELING AND ENHANCED CONTROL STRATEGY FOR GRID-CONNECTED FOUR-LEG INVERTER WITHOUT PHASE-LOCKED LOOP AND PARK’S TRANSFORMATION, Revue Roumaine des Sciences Techniques - Serie Électrotechnique et Énergétique, Vol:68, Issue:2, pages:1-6, ACADEMIEI ROMANE

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  • 2023-06-30
  • 2023-06-30

    أثر التخطيط والاستقطاب الالكتروني للموارد البشرية على الأداء الوظيفي دراسة حالة: مؤسسة كوندور بولاية برج بوعريريج

    الملخص: هدفت الدراسة إلى التعرف على دور عملية التخطيط الإلكتروني والاستقطاب الإلكتروني للموارد البشرية في تحسين الأداء الوظيفي المطبق على مؤسسة كوندور ببرج بوعريريج. استخدمت الدراسة المنهج الوصفي التحليلي، والاستبانة كأداة لجمع البيانات من عينة عشوائية قوامها (50) موظفاً من مؤسسة كوندور. أظهرت نتائج الدراسة أن هناك دورا واضحا للتخطيط الإلكتروني وعملية الاستقطاب الإلكتروني للموارد البشرية في تحسين الأداء الوظيفي وفق المتغيرات الشخصية. وعليه، أوصت الدراسة بضرورة إدراك دور عملية التخطيط الإلكتروني الصحيحة والاستقطاب الإلكتروني للموارد البشرية في تحسين الأداء الوظيفي لمؤسسة كوندور.

    Citation

    Sana RAHMANI , ADMIN Admin , , (2023-06-30), أثر التخطيط والاستقطاب الالكتروني للموارد البشرية على الأداء الوظيفي دراسة حالة: مؤسسة كوندور بولاية برج بوعريريج, مجلة البحوث الاقتصادية والمالية, Vol:10, Issue:1, pages:580-607, جامعة ام البواقي

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  • 2023-06-19
  • 2023-06-19

    القيم الانسانية والاجتماعية في شعر محمد بن الزوالي

    يعد شاعر الملحون محمد بن الزوالي من أكبر الشعراء في منطقة الحضة حضورا على الساحة الأدبية فقد نظم مئات القصائد التى تدعو إلى القيم الانسانية والاجتماعية خفاظا على ترابط المجمتع الحضني وتماسكه

    Citation

    laldja hadli , ADMIN Admin , ,(2023-06-19), القيم الانسانية والاجتماعية في شعر محمد بن الزوالي,شاعر الملحون محمد بن الزوالي، مسيرة رجل مجاهد وشاعر,جامعة محمد بوضياف بالمسيلة

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  • 2023-06-11
  • 2023-06-11

    Ultrasound assisted maceration with Pistachia lentiscus (lentisk) leaves to enhance the antioxidant activity and the oxidative stability of extra virgin olive oil

    The development of new functional olive oils may help in prevention of chronic diseases and improving the quality of life for many consumers. This is focused on the enrichment of enrich virgin olive oil (VOO) with Pistachia lentiscus leaves powder using optimized ultrasound assisted maceration (UAM) to enhance antioxidant activity and its oxidative stability. For plant extract, total phenolic compounds (TPC) content, antioxidant activities assay and inhibition of copper-induced LDL oxidation have been determined. The TPC content, antioxidant capacity and oxidative stability (Rancimat test, PV, K232 and K270) of VOO enriched by US (US-VOO) have been evaluated and compared to those obtained by the conventional method (CM-VOO) and VOO control. Chemical tests showed that lentisk extracts exhibited a stronger scavenging effect more than chemical standards. Lentisk extracts may protect strongly LDL from oxidation and delaying the lag time for about 3.3 h compared to the control. The enriched US-VOO with optimum conditions (100% amplitude, 15% ratio and 10 min of time exposition) showed contents of 1.6, 3 and 4 times more than the control (VOO) for TPC, chlorophyll and carotenoids. The enriched oils by US and CV methods showed a DPPH inhibition percentage and reducing power 2.4 and 1.6 times more than those of VOO. During heat treatment, peroxide value, K232 and K270 values remained significantly lower in enriched oils than VOO control. These results demonstrate the great potential of USM and the use of natural preservation ingredient such as P. lentiscus leaves to improve VOO nutritional quality oxidation stability, and extend the shelf-life of olive oil.

    Citation

    Amine BELBAHI , ADMIN Admin , Sofiane Dairi, Jean Paul Cristol, Omar Aoun, Farid Dahmoune, Lila Boulekbache‑Makhlouf, , (2023-06-11), Ultrasound assisted maceration with Pistachia lentiscus (lentisk) leaves to enhance the antioxidant activity and the oxidative stability of extra virgin olive oil, Journal of Food Measurement and Characterization, Vol:17, Issue:1, pages:4715–4726, Springer Nature Link

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  • 2023-06-10
  • 2023-06-10

    تحقيق البعد البيئي للاستدامة في الاحياء السكنية الفردية دراسة حالة مدينة بوسعادة

    تعالج الإشكالية التي طرحتها الطالبة موضوعا في غاية الأهمية يعتبر إلى حد ما من مواضيع الساعة المتجددة باستمرار لعلاقته القوية مع حياة الناس اليومية وبمصير الحياة على كوكبنا. ويتمحور هذا الموضوع حول تحقيق ما يسمى بالبعد البيئي للاستدامة وذلك على الخصوص في الأحياء السكنية الفردية بأسلوب سهل ومبسط الى حد ما من حيث اللغة ومتدرج موضوعاتيا من العام إلى الخاص ومن الأصول إلى الفروع.

    Citation

    BoudjemaaKHALFALLLAH , ADMINAdmin , iman lamdjad, ,(2023-06-10); تحقيق البعد البيئي للاستدامة في الاحياء السكنية الفردية دراسة حالة مدينة بوسعادة,msila,

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  • 2023-06-02
  • 2023-06-02

    مفاهيم الحجاج وآلياته بين الطروحات العربية والمفاهيم الغربية

    يتناول المقال مفاهيم الحجاج بين الطروحات العربية والمفاهيم الغربية

    Citation

    BELKHEIR Refice , ADMIN Admin , , (2023-06-02), مفاهيم الحجاج وآلياته بين الطروحات العربية والمفاهيم الغربية, مجلة إشكالات, Vol:12, Issue:2, pages:393-407, مجلة إشكالات

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  • 2023-05-11
  • 2023-05-11

    Activated Carbons Prepared from Palm residue by H3PO4 activation: Characterization and adsorption of Congo red dye

    Activated carbons were prepared by thermochemical activation in air at 450°C of palm residue impregnated with phosphoric acid for different impregnation ratios: 60 and 100% by weight. These Materials were characterized for their surface chemistry by point of zero charge measurements Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA); as well as for their porous and morphological structure by scanning electron microscopy (SEM), iodine index and methylene bleu test. The adsorption capacity of residue -based activated carbons was evaluated using an anionic dye (Congo red). Adsorption study were tested as a function of pH (2–10), adsorption mass (0.25–2 g.L-1), contact time (30–480 min) and initial dye concentration (10–300 mg.L-1). The phenomenon of adsorption was confirmed by FTIR spectroscopy analyzes. The adsorption amount of Congo red on PAC60 and PAC100 was about 73.76 mg.g-1 and 171.58 mg.g-1, respectively. PAC100 is the most efficient in terms of the elimination of the Congo red dye, at room temperature. The adsorption phenomenon fits well with the Langmuir isotherm. The adsorption kinetics of Congo red dye onto palm residue best described by a pseudo-second order model.

    Citation

    SABAH Djaber , ADMIN Admin , El-Said I. EL-SHAFEY, Reffas abdelbaki, ,(2023-05-11), Activated Carbons Prepared from Palm residue by H3PO4 activation: Characterization and adsorption of Congo red dye,International Conference on Materials & Processes for Sustainable Development 2023,Chenini, Gabes ‐ Tunisia

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  • 2023-05-03
  • 2023-05-03

    Study of the evolution of soil erosion using RUSLE, GIS and remote sensing in Bousselam watershed, Algeria

    The objective of this work is to study the evolution of soil erosion in the Boussellam watershed in the northeast of Algeria, using the Revised Universal Soil Loss Equation (RUSLE), geographic information system (GIS), and remote sensing. RUSLE model has been used for modeling the main factors involved in erosive phenomena. This basin covers an area of 4151 km² of elongated shape and low relief. It is characterized by an altitude ranging from 189 m to 1757 m, with an average of 931 m and a slope ranging between 0 and 266 % with an average of 18 %. Results showed that the average erosivity factor R is 68 (MJ.mm/ha.h.an) with a maximum value of 140 (MJ.mm/ha.h.an). The soil erodibility factor K ranges from 0.04 to 0.21 with an average of 0.11 (t.h.ha)/(MJ.ha.mm). The LS topographic factor ranges from 0 to 216 with an average of 16. The mean P factor is estimated to be 0.77, and the average C factor is 0.076. The combination of the different maps of these parameters made it possible to deduce the erosion map from which, it appears that the phenomenon of erosion mainly affects the northern part of the basin with an average of 258 (t/ha/year) for July 2015. These maps can be particularly useful in pinpointing potential areas of increased erosion risk underpinning targeted investigation and management action to support soil conservation for improved food and water security in this important watershed.

    Citation

    BELKACEM Merzouk , ADMIN Admin , ALI Berghout , ADMIN Admin , Elhadj MOKHTARI , ,(2023-05-03), Study of the evolution of soil erosion using RUSLE, GIS and remote sensing in Bousselam watershed, Algeria,The International Seminar Bioresources and Sustainable Development,Bouira, Algérie

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  • 2023-05-03
  • 2023-05-03

    Study of the evolution of soil erosion using RUSLE, GIS and remote sensing in Bousselam watershed, Algeria

    The objective of this work is to study the evolution of soil erosion in the Boussellam watershed in the northeast of Algeria, using the Revised Universal Soil Loss Equation (RUSLE), geographic information system (GIS), and remote sensing. RUSLE model has been used for modeling the main factors involved in erosive phenomena. This basin covers an area of 4151 km² of elongated shape and low relief. It is characterized by an altitude ranging from 189 m to 1757 m, with an average of 931 m and a slope ranging between 0 and 266 % with an average of 18 %. Results showed that the average erosivity factor R is 68 (MJ.mm/ha.h.an) with a maximum value of 140 (MJ.mm/ha.h.an). The soil erodibility factor K ranges from 0.04 to 0.21 with an average of 0.11 (t.h.ha)/(MJ.ha.mm). The LS topographic factor ranges from 0 to 216 with an average of 16. The mean P factor is estimated to be 0.77, and the average C factor is 0.076. The combination of the different maps of these parameters made it possible to deduce the erosion map from which, it appears that the phenomenon of erosion mainly affects the northern part of the basin with an average of 258 (t/ha/year) for July 2015. These maps can be particularly useful in pinpointing potential areas of increased erosion risk underpinning targeted investigation and management action to support soil conservation for improved food and water security in this important watershed.

    Citation

    BELKACEM Merzouk , ADMIN Admin , ALI Berghout , ADMIN Admin , Elhadj MOKHTARI , ,(2023-05-03), Study of the evolution of soil erosion using RUSLE, GIS and remote sensing in Bousselam watershed, Algeria,The International Seminar Bioresources and Sustainable Development,Bouira, Algérie

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  • 2023-04-18
  • 2023-04-18

    Approximation solutions of time dependent Schrodinger equation for Hellmann potential using the Nikiforov-Uvarov-Functional Analysis method

    The time dependent Schrödinger equation for The Hellmann potential is studied. This potential is not studied in the literatures. The Hellmann potential is a superposition of the Coulomb potential and the Yukawa potential. The knowledge of the solution of the Schrodinger equation gave all the possible information, as regards the physical properties of any system considered. These include the energy, momentum and coordinate of the particle in the system, frequency and wavelength that describe the quantum mechanical system, probability amplitude and phase of the wave function, and others. To obtain the energies spectrum and the wave functions we use a new method for solving a second order differential equation of the hypergeometric type called Nikiforov–Uvarov-Functional Analysis (NUFA) method and the method of variables separation . The (NUFA) method is composed of the concepts of the Nikiforov-Uvarov (NU) method, the parametric Nikiforov-Uvarov method and the functional analysis method. This method is a simple and elegant method for solving a second order differential equation of the hypergeometric type. This method is easy and simple just as the parametric NU method. Unlike the NU method which involved looking for the square of the polynomials and other conditions which makes it complicated, the NUFA can easily be used to obtain the energy and the wave function once the wave equations have been properly transformed and the singularities identified. So its simplicity eliminates the rigorous mathematical manipulations, as encountered in other techniques. This method can be used to solve few body problems in nuclear physics, particle physics, as well as molecular and chemical physics. Keywords :The Nikiforov–Uvarov-Functional Analysis method, time dependent Schrödinger equation, Hellmann potential, wave function, method of variables separation

    Citation

    Salim MEDJBER , ADMIN Admin , Menouar salah, ,(2023-04-18), Approximation solutions of time dependent Schrodinger equation for Hellmann potential using the Nikiforov-Uvarov-Functional Analysis method,1stInternational Conference on Scientific and Innovative Studies,Konya, Turky

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  • 2023-03-13
  • 2023-03-13

    الناقة بين التصوف والتراث والواقع عند عياش يحياوي

    تعد الناقة في الأدب الصوفي من أهم التيمات التراهن عليها الجماعة الصوفية ،ذلك أنها تشكل عالما متفردا يعمل على المزج بين الأصالة ،الواقع ،والتصوف ،وهو ماراهن عليه الشاعر الحضني ،الجزائري عياش يحياوي في كثير من قصائده الشعرية التي تعبر عن انتمائه حينا " الريف الجزائري وصحرائه ، وصحراء الخليج العربي ، من خلال تواجده في الامارات العربية المتحدة لفترة زمنية طويلة ، وهو ما أثر في منجزه الشعري الذي شمل هذه العناصر .

    Citation

    Baya باية Kahia كاهية , ADMIN Admin , ,(2023-03-13), الناقة بين التصوف والتراث والواقع عند عياش يحياوي,الملتقى الوطني الأول حول : حداثة الكتابة الأدبية والصحفية في أعمال الراحل : عياش يحياوي,كلية الآداب جامعة محمد بوضياف مسيلة

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  • 2023-03-10
  • 2023-03-10

    Quantum dynamics of time dependent deformed Woods-Saxon potential using the Nikiforov-Uvarov-Functional Analysis method

    The time dependent Schrödinger equation for the deformed Woods-Saxon potential is studied. This potential is not studied in the literatures. The deformed Woods-Saxon potential was used for description of interaction of a nucleon with a heavy nuclear The knowledge of the solution of the Schrodinger equation gave all the possible information, as regards the physical properties of any system considered. These include the energy, momentum and coordinate of the particle in the system, frequency and wavelength that describe the quantum mechanical system, probability amplitude and phase of the wave function, and others. To obtain the energies spectrum and the wave functions we use a new method for solving a second order differential equation of the hypergeometric type called Nikiforov–Uvarov-Functional Analysis (NUFA) method and the method of variables separation. The (NUFA) method is composed of the concepts of the Nikiforov-Uvarov (NU) method, the parametric Nikiforov-Uvarov method and the functional analysis method. Unlike the NU method which involved looking for the square of the polynomials and other conditions which makes it complicated, the NUFA can easily be used to obtain the energy and the wave function once the wave equations have been properly transformed and the singularities identified. So its simplicity eliminates the rigorous mathematical manipulations, as encountered in other techniques. The eigensolutions obtained using NUFA method are in agreement with the ones obtained in literatures for the stationary potential models considered. Keywords: The Nikiforov–Uvarov-Functional Analysis method, time dependent Schrödinger equation, deformed Woods-Saxon potential, wave function, method of variables separation.

    Citation

    Salim MEDJBER , ADMIN Admin , Menouar Salah, ,(2023-03-10), Quantum dynamics of time dependent deformed Woods-Saxon potential using the Nikiforov-Uvarov-Functional Analysis method,2nd International Conference on Scientific and Academic Research,Konya, Turkey

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  • 2023-02-08
  • 2023-02-08

    Islamic urban heritage in Constantine -challenges and prospects

    Scientific research on heritage ismany and varied, because it represents a collective historical and cultural repository that expresses essentially identity. Among the areas of heritage, we distinguish the urban and architectural heritage that reflects the true identity and the civilizational dimension, which today the process of preserving it has become a historical responsibility and a national and national duty that stops specialists in all parts of the world. In light of the growing interest in the concept of sustainable development in various fields, the care of heritage in its comprehensiveness emerges as one of the major axes of this development, and an area that falls within the framework of a comprehensive policy to preserve the diverse world heritage. There is no doubt that thegeneral problem with regard to ancient urban tissues lies in their ability to respond to the modern requirements of architectural urban development and provide an environment in which the balance between man and his surroundings is not disturbed, and to preserve the prevailing social and human dimensions, and to overcome purely economic approaches in comparing modern projects and conservation projects. In this context, we have the right to ask whether it is possible to protect and breathe life into heritage urban tissues, without this being an attempt at temporary revival. Is it possible to achieve sustainable urbanization in light of the predominance market rules?This research mainly aims to visualize an urban project that aims to achieve two basic things:-Protecting the Arab-Islamic architectural and urban identity of the city of Constantine, the capital of eastern Algeria, which has been subjected to cultural obliteration and attempts at Westernization over more than a century of French colonialism.-Adopting a practical methodology during the course of the approachKeywords. Identity, Urban Heritage, Protection, Constantine, Urban Projec

    Citation

    KADDOUR Derbal , ADMIN Admin , Boudjemaa Khalfallah @univ-msila.dz, , (2023-02-08), Islamic urban heritage in Constantine -challenges and prospects, Technium Social Sciences Journal, Vol:40, Issue:, pages:473-480, www.techniumscience.com

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  • 2023-01-21
  • 2023-01-21

    الطوبونيميا الأندلسية بالمغرب الأوسط الوسيط بين الدلائل اللغوية والمرجعية التاريخية المجال والمكان أنموذجًا

    تسعى هذه الدراسة في محاولة منها إلى رسم بعض معالم صور الطوبونيم الأندلسي بالمغرب الأوسط، وإبراز مساحة الاهتمام به، انطلاقًا من الدراسات السابقة المفيدة، وما أسهمت به المصادر المعتمدة من درجة الاستفادة استقراءً وتحليلاً، واعتمادًا على المنهج المقارن والمقاربة التاريخية والجغرافية عبر أمدها الطويل، في الوقوف على دور المكان في التأثير على الأحداث ( الهجرة )، مع تتبعها تاريخيًا في سياق زمكاني يوضح آليات الاستقرار وطرق التوطين الأندلسي بمجاله، في محاولة للكشف عن نمط طوبونيمي انتقل عبر تصرفه الساعي إلى توظيفه في التوزيع والتعمير والاحتواء في ظل توطين محلي عرف قبل مجيئه نسقًا سريعًا وحركة دؤوبة من باديته. وفي اقتصارنا على دراسة قلة ما قدمته لنا المصادر، مع التأكيد على حبلى الصعوبات التي كابدت البحث في طوبونيميا الأندلس بالمغرب الأوسط، حاولنا الإحاطة بالقدر الكافي لهذا المجال التاريخي والجغرافي، توخيًا وتمشيًا مع المعطيات ضمن خطة ثلاثية تقوم على ضبط المصطلح ومناقشته ضمن سياقه التاريخي والجغرافي ( أولاً )، ثم التتبع التاريخي للوجود الأندلسي ( ثانيًا )، وأخيرًا جرد المتغيرات الطوبونيمية بالمغرب الأوسط من خلال التوطين الأندلسي ( ثالثًا ).

    Citation

    ISMAIL Barkat , ADMIN Admin , ,(2023-01-21), الطوبونيميا الأندلسية بالمغرب الأوسط الوسيط بين الدلائل اللغوية والمرجعية التاريخية المجال والمكان أنموذجًا,الطوبونيميا الأندلسية في الجزائر والوطن العربي,جامعة أبو بكر بلقايد ـ تلمسان

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  • 2023-01-01
  • 2023-01-01

    SYSTEMATIC AND TOXICOLOGICAL STUDY WITH SYNERGY OF THE MOSQUITOES IN EL KANTARA REGION (BISKRA, SOUTHERN ALGERIA)

    Recent years have seen the re-emergence of vector-borne diseases, representing more than 17% of infectious diseases globally. Most of these diseases can be prevented by vector control measures. Series of difficulties which are linked to the fight. Plant insecticides can present interesting alternatives to the chemical insecticides currently used in the fight against these pests. In the first part, we have inventoried the vector species in the region of El Kantara, Biskra, by conducting surveys of three sites. The second part focuses on the biological control of the larvae of the most abundant species in the region, that is, Culiseta longiareolata. The faunal inventory of the species of Culicidae in the three sites of El Kantara showed seven species belonging to three genera. The genus Culiseta was the best represented, particularly with the species C. longiareolata (89.91%). The toxicological activity of the ethanoic extracts of the seeds of Peganum harmala and Citrullus colocynthis was studied in synergy against the larvae of Culiseta longiareolata at different concentrations. The mortality rate increased over time to reach more than 70% after 5 days.

    Citation

    Saliha BENHISSEN , SIHAM Bounadji , ADMIN Admin , Nora belkhiri, , (2023-01-01), SYSTEMATIC AND TOXICOLOGICAL STUDY WITH SYNERGY OF THE MOSQUITOES IN EL KANTARA REGION (BISKRA, SOUTHERN ALGERIA), Ekológia (Bratislava) - Journal of the Institute of Landscape Ecology, Slovak Academy of Sciences, Vol:42, Issue:1, pages:10–16, Ekológia (Bratislava) - Journal of the Institute of Landscape Ecology, Slovak Academy of Sciences

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  • 2023
  • 2023

    An inverse time-dependent source problem for a time fractional diffusion equation with a nonlocal boundary conditions

    In this paper, we investigate an inverse time-dependent source problem for a time-fractional diffusion equation with nonlocal boundary and integral over-determination conditions. The fractional derivative is described in the generalized Caputo sense. The nonlocal boundary conditions are regular but not strongly regular. The special thing about this problem is: the system of eigenfunctions is not complete, but the system of eigen-and associated functions forming a basis in L2 (0, 1). Under some natural regularity and consistency conditions on the input data the existence, uniqueness and continuously dependence upon the data of the solution are shown by using the generalized Fourier method, the estimates of Mittag-Leffler function and Banach’s contraction mapping principle.

    Citation

    BRAHIM Nouiri , ADMIN Admin , FARID Mihoubi , , (2023), An inverse time-dependent source problem for a time fractional diffusion equation with a nonlocal boundary conditions, Miskolc Mathematical Notes, Vol:24, Issue:2, pages:1-18, University of Miskolc

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  • 2023
  • 2023

    : فحص بعض المتغيرات النفسية لدى حالات خاضوا تجربة الهجرة الغير شرعية-دراسة حالة: ناجحين وفاشلين في محاولة الهجرة الغير شرعية

    مجلة الجامع جامعة المسيلة.

    Citation

    asma kharkhache , ADMIN Admin , , (2023), : فحص بعض المتغيرات النفسية لدى حالات خاضوا تجربة الهجرة الغير شرعية-دراسة حالة: ناجحين وفاشلين في محاولة الهجرة الغير شرعية, مجلة الجامع جامعة المسيلة., Vol:0, Issue:1, pages:0-1, جامعة المسيلة

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  • 2023
  • 2023

    Citizenship Culture as an Indicator of Traffic Awareness among Young Drivers of Public Transport Vehicles and its Relationship to Commitment to Traffic Safety.

    Citizenship is one of the most important modern concepts; it is of a great impact within societies that seek to realize efficacy and commitment in all domains. The present field study aims to reveal the extent to which the citizenship culture affects young drivers of public transport vehicles in terms of their commitment to traffic safety rules. To reach that aim, the researcher collected some previous studies on the topic at hand to serve as a literature review and then moved on to the practical work by going to the public transport station, interviewing a sample of young drivers of public transport vehicles consisting of thirty drivers, distributing the questionnaire to them and, then, processing the data statistically. The results showed that the level of citizenship culture and commitment to traffic safety rules is low, in addition to the impact of citizenship culture on commitment to traffic safety rules among young taxi drivers. Key Words: Citizenship Culture, Commitment, Ttraffic Safety Rules, Young Drivers of Public Transport Vehicles.

    Citation

    achour allouti , ADMIN Admin , achour allouti , , (2023), Citizenship Culture as an Indicator of Traffic Awareness among Young Drivers of Public Transport Vehicles and its Relationship to Commitment to Traffic Safety., TOBACOO REGULATORY SCIENCE, Vol:9, Issue:1, pages:260-276, TOBACOO REGULATORY SCIENCE

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  • 2023
  • 2023

    Synthesis and characterization of activated carbon from Palme by chemical activation

    For the manufacture of activated carbon, agricultural leftovers have been used as a precursor material. Researchers looked at how phosphoric acid affected the porosity, adsorption, and surface properties of carbon. Using phosphoric acid in the range of 60 to 100%, three samples of carbon were created, each measuring 80 m in size. Activated carbon made from palm trash was characterized using FTIR, phpzc, and ATG. Additionally investigated were the iodine index and the methylene blue index.It was investigated how different variables, including starting dye concentrations of 50–300 ppm and pH (2–10), adsorbent dose (0.0025–1.5 g/L), contact period (20–240 min), and other variables, affected the results. Compounds were evaluated in solution before and after adsorption using FTIR spectroscopy. Application of and experimental results supporting isothermal models of Langmuir and Freundlich. The findings demonstrated that the adsorption phenomenon closely matches the Langmuir isotherms a pseudo-second-order model best captures the sequential adsorption kinetics of Congo red and methylene blue dyes on palm residue. The outcomes demonstrated that phosphoric acid significantly enhanced the aforementioned properties.

    Citation

    SABAH Djaber , ADMIN Admin , ,(2023), Synthesis and characterization of activated carbon from Palme by chemical activation,1st International Seminar on Process Engineering & Environment (ISCPE2022),university of mohamed khider biskra

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  • 2023
  • 2023

    Study and modeling of the thrombosis of small cerebral aneurysms, with and without flow diverter, by the lattice Boltzmann method

    bstract Background and objective Small cerebral aneurysms are currently commonly treated non-invasively by flow diverter device. These stents lead to thrombotic occlusion of the aneurysm soon after their placement. The purpose of this work is to model clotting into intracranial aneurysms with and without stents, using a non-Newtonian of blood behavior, and to investigate the importance of stent to generate desired thrombus in intracranial aneurysms. Method The description of blood flow is made by the Boltzmann lattice equations, while thrombosis is modeled by the "fluid age" model. The lattice Boltzmann method is a computational technique for simulating fluid dynamics. The method is based on a mesoscopic approach, where the fluid is represented by a set of particles that move and interact on a grid. The model for blood coagulation is described by lattice Boltzmann Method, and it doesn't take into account the complicated coagulation pathway, this main idea is developed using the model of residence time of blood: all fluid in the domain is assumed to be capable of clotting, given enough time. The fluid age is measured by a passive scalar using a transport equation, and the node coagulates if the fluid age increases enough. Three small aneurysms of different sizes and shapes with three stents of various porosities were used to test the ability of the model to predict thrombosis. The "occlusion rate" parameter is used to assess the effectiveness of the flow diverter device. Results For the large aspect ratio factor, the occlusion is: 91% for flow diverter devise with seven struts. For medium aspect ratio, a rate of 80% is achieved. An occlusion rate of slightly more than 30% is obtained for very small aneurysms with low aspect ratio. The Newtonian model underestimates the volume of thrombosis generated. The difference in the prediction of the thrombosis volume between the Newtonian and no-Newtonian Carreau-Yasuda models is approximately 10%. Conclusion The occlusion rate is proportional to the aspect ratio form factor. For the large and medium aspect ratio factors, the occlusion is satisfactory. Concerning very small aneurysms with low aspect ratio, aneurysm occlusion is low. This rate can be improved to almost complete occlusion if the flow diverter device is doubled. The generality of the model suggests its extensibility toward any other type of thrombosis (stenosis, thrombosis in aortic aneurysms).

    Citation

    Farouk MEZALI , ADMIN Admin , Khatir Naima, Saadia Benmamar, Abdelkrim Liazid, , (2023), Study and modeling of the thrombosis of small cerebral aneurysms, with and without flow diverter, by the lattice Boltzmann method, Computer Methods and Programs in Biomedicine, Vol:233, Issue:3, pages:11(107456), ELSEVIER

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  • 2023
  • 2023

    نمظهرات الانتماء في المسرح الجزائري الحديث"حنين إلى الجبل" للصالح خرفي

    نمظهرات الانتماء في المسرح الجزائري الحديث"حنين إلى الجبل" للصالح خرفي

    Citation

    LAKHDAR Henni , ADMIN Admin , لخضر هني, ,(2023), نمظهرات الانتماء في المسرح الجزائري الحديث"حنين إلى الجبل" للصالح خرفي,المسرح والثورة,جامعة المسيلة

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  • 2023
  • 2023

    المفاوضات الجزائرية الفرنسية واستقلال الجزائر

    بحث حول المفاوضات

    Citation

    Abdalah Meguelati , ADMIN Admin , ADMIN Admin , ,(2023), المفاوضات الجزائرية الفرنسية واستقلال الجزائر,المفاوضات الجزائرية الفرنسية,بشسكرة

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  • 2023
  • 2023

    المفاوضات الجزائرية الفرنسية واستقلال الجزائر

    بحث حول المفاوضات

    Citation

    Abdalah Meguelati , ADMIN Admin , ADMIN Admin , ,(2023), المفاوضات الجزائرية الفرنسية واستقلال الجزائر,المفاوضات الجزائرية الفرنسية,بشسكرة

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  • 2023
  • 2023

    Transport properties of argon atoms diffusing in their parent gas.

    Transport properties of argon atoms diffusing in their parent gas.

    Citation

    Samra Nehaoua , ADMIN Admin , Fouzia Bouchelaghem , ,(2023), Transport properties of argon atoms diffusing in their parent gas.,National Seminar of Physics, Chemistry, and Their Applications Webinar (NSPCA'23),Bordj Bou arriridj

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  • 2023
  • 2023

    The influence of temperature on the corrosion of the special alloy Fe-Mn in a saline media

    Corrosion is a natural phenomenon that happens when minerals react chemically with their surroundings. It may cause significant material and human losses. Seawater is the most challenging and aggresive corrosion-causing medium out of these factors, which also include humidity, temperature, acid rain, etc. In our study, we prepared a medium similar to seawater that contains 3.5% sodium chloride, then we concentrated on how the temperature range of 10 to 45 ºC affected the corrosion mechanism of an iron-manganese alloy (Fe-Mn). The methods employed in this work were Tafel polarization curves and electrochemical impedance spectroscopy (EIS). The surface morphology of the Fe-Mn alloy surface was examined by scanning electron microscope (SEM).The results reveal that the open circuit potential (OCP) of Fe-Mn alloy shifted negatively with increasing temperature, suggesting the start of corrosion processes. The corrosion potential degenerates more quickly at higher temperatures, which is associated to a faster corrosion rate. The EIS indicated that the corrosion resistance of Fe-Mn alloy decreased at high temperatures, and tafel curves demonstrated that the corrosion current density Jcorr increased in high temperatures. The surface of the Fe-Mn alloy was covered by a huge number of the accumulated corrosion products as the temperature climbed, the roughness of the steel increased, and the volume and size of corrosion products dramatically increased.

    Citation

    Sarra Merabet , Cheikh MOKRANI , ADMIN Admin , ,(2023), The influence of temperature on the corrosion of the special alloy Fe-Mn in a saline media,THE 3rd NATIONAL CONFERENCE ON APPLIED PHYSICS & CHEMISTRY,Laghouat

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  • 2023
  • 2023

    Les Orchidées du Parc National de Djurdjura (Grande Kabylie, Algérie) sur 17 années: Inventaire, Taxonomie et Biogéographie

    Résumé Rebbas, K., Heddad, M., Ben Si Said, Z., Haddad, S. & E. Véla (2023): Les orchidées du Parc National de Djurdjura (Grande Kabylie, Algérie) sur 17 années - inventaire, taxonomie et biogéographie.- J. Eur. Orch. 55(1): 99-181. L’orchidoflore de la grande Kabylie, en particulier de la réserve de biosphère du Djurdjura et ces environs (nord-centre Algérien), demeure peu connue malgré l’importance de ce secteur clé pour la biodiversité et fait l’objet d’un intérêt récent des botanistes. Cet article est un travail collaboratif initié il y a 17 ans (2006-2022) sur l’inventaire, l’illustration, la cartographie et la taxonomie des Orchidées dans la région du Djurdjura, nord centre de l’Algérie. Située dans le secteur de la grande Kabylie (K1), en kabyle Tamurt Idurar, le pays des montagnes, cette région abrite une flore diversifiée dont le recensement est encore incomplet. Avec 45 orchidées (espèces et sous espèces) et quatre hybrides sur plus de 500 stations d’observations, cette région confirme le fort potentiel de diversité connu dans toute la Kabylie et la Numidie. Cette relative diversité orchidologique s’explique en grande partie par les conditions climatiques exceptionnelles, associées à l’originalité des milieux en altitudes de la grande Kabylie de Djurdjura, plus au moins bien conservés. Des stations d’orchidées ont été découvertes et redécouvertes dans le Parc National de Djurdjura. Des espèces, des sous-espèces rares et endémiques ont été observées, identifiées et localisées, ainsi que quatre hybrides. Sept espèces sont proposées pour être ajoutées à la protection légale au niveau national (Cephalanthera rubra, Cypripedium calceolus, Dactylorhiza maculata subsp. battandieri, D. markusii, Epipactis helleborine s.l., Orchis purpurea, Platanthera bifolia subsp. kuenkelei)

    Citation

    Khellaf REBBAS , ZINEB Bensisaid , ADMIN Admin , Moussa Heddad, Saci Haddad, Errol Véla, , (2023), Les Orchidées du Parc National de Djurdjura (Grande Kabylie, Algérie) sur 17 années: Inventaire, Taxonomie et Biogéographie, Journal Europäischer Orchideen, Vol:55, Issue:1, pages:99-181, Journal Europäischer Orchideen

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  • 2022-12-15
  • 2022-12-15

    التشكيلات الفنية في شعر عقاب بلخير من خلال مختارات شعرية من ديوان "متن العارفين" أنموذجا Artistic forms in The poetry of : OGAB Belkhair’s through poetry selections from the poetic work : “Matn Alarifin” as a Model

    إ ن المتأمل في شعر الشاعر الفذ عقاب بلخير يجد نفسه أمام أصوات شعرية ممتزجة ومجتمعة على لسانه، وإن القارئ لشعره سيدرك تمام الإدراك أنه أمام مادة شعرية ضخمة وكثيفة المعاني ومترابطة الدلالات، وصعبة الإيحاءات وكأننا نقرأ للشاعر الصوفي الكبير محي الدين بن عربي، وفلسفته الشعرية الطاغية في ديوانه "متن العارفين"، بل إن العن وان في ح د ذاته يدل عل ى تصوف الشاعر وتشبع ه بالثقافة الصوفية للشعراء المتفلسفي ن الأوائ ل كابن الفارض وشعره، وابن عربي وديوانه " ترجمان الأشواق". وإن الدراسة التي نخوض فيها لدليل على صعوبة وكثافة الدلا لة في شعره، وهذا الزخم الدلالي يستلزم الإحاطة ببعض علوم البلاغة والنحو

    Citation

    hakima BOUCHELALEGبوشلالق , ADMIN Admin , , (2022-12-15), التشكيلات الفنية في شعر عقاب بلخير من خلال مختارات شعرية من ديوان "متن العارفين" أنموذجا Artistic forms in The poetry of : OGAB Belkhair’s through poetry selections from the poetic work : “Matn Alarifin” as a Model, حوليات الآداب, Vol:-10, Issue:-3, pages:28-43, جامعة المسيلة

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  • 2022-11-17
  • 2022-11-17

    المعتقدات المضمرة والخفية في خطاب الأمثال الشعبية في منطقة الحضنة دراسة أركيولوجية

    تعد الأمثال الشعبية من بين أهم الأجناس الأدبية التي راهنت عليها المجتمعات في بناء تراث ثقافي وحضاري يعبر على روح الأمة وتاريخها الشعبي ،الذي لطالما عبر عما يختلج به الفكر والذاكرة الشعبية ،والتي عبرت بصدق عن تجارب إنسانية عايشها الفرد المسيلي فصورت أيامه عاداته ،تقاليده ،وكل مايهمه في حياته اليومية ،فكانت بصدق المرآة العاكسة لثقافة شعب له تواجد فكري وحضاري وتراثي في المنطقة برمتها .

    Citation

    Baya باية Kahia كاهية , ADMIN Admin , ,(2022-11-17), المعتقدات المضمرة والخفية في خطاب الأمثال الشعبية في منطقة الحضنة دراسة أركيولوجية,التكوينات الأنثروبولوجية والممارسات الثقافية للتراث اللامادي في منطقة الحضنة،,كلية الآداب جامعة محمد بوضياف مسيلة

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  • 2022-10-26
  • 2022-10-26

    علم الاجتماع في الوطن العربي بين النشأة وعقبات النمو والتطور

    علم الاجتماع في الوطن العربي بين النشأة وعقبات النمو والتطور

    Citation

    MOKHTAR Rahab , ADMIN Admin , ,(2022-10-26), علم الاجتماع في الوطن العربي بين النشأة وعقبات النمو والتطور,علم الاجتماع وقضايا المجتمع قراءة في ثنائية الدور والمكانة,مخبر الدراسات الأنتروبولوجية والمشكلات الاجتماعية، جامعة محمد بوضياف

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  • 2022-08-17
  • 2022-08-17

    المواطنة بين المفهوم والتطبيق دراسة ميدانية

    التعريف بالمواطنة وعناصرها في المجتمع وكيفية تطبيقها انطلاقا من تطبيق الاستبيان على المواطنين

    Citation

    HamzaBARKAT , ADMINAdmin , ,(2022-08-17); المواطنة بين المفهوم والتطبيق دراسة ميدانية,,دار المجد للطباعة والنشر

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  • 2022-07-20
  • 2022-07-20

    THE EFFECT OF SOME HORMONES ON THE IN VITRO CULTURE OF DATE PALM (PHOENIX DACTYLIFERA L.) OF BOU-SAÂDA, ALGERIA

    The Oasis of Bou-Saada is gradually deteriorating due to the attack of insect pests such as white scale Parlatoria blanchardi Targ., the palm worm Myeloïs ceratoniae Zell and some fungal pests. In addition, polluted irrigation water coming from the wadi Bou-Saada has seriously damaged the oasis palm. Consequently, 23 promising date palm varieties are facing extinction. The Rehabilitation of the oasis palms of Bou-Saâda requires mass propagation of the endangered date palm varieties to conserve the fauna and the genotypes. The Tissue Culture technique is the only method through which date palm oases Bou-Saâda can be restored in a short period as compared to growing the trees through seeds or offshoots. As the first phase of conservation of the oases, this research project was initiated whereas propagation of two highly promising varieties Deglet-Nour and Mech-Degla was carried out through tissue culture technique on MS medium using various concentrations of three different hormones (AIB, GA3, 2,4-D) to obtain organogenesis. Results revealed that the growth in length of explants of the variety Deglet-Nour and its overall development was better as compared to the variety Mech-Degla with the AIB (2mg/l). The GA3 hormone performed the best in relation to the development of organogenesis in the two varieties followed by AIB hormone than the 2,4-D with overall mean lengths of 1.36, 1,26 and 0.84 centimetres, respectively. The formation of the callus was noticed only in the case of the variety Deglet-Nour. Key words: Bou-Saâda oasis, In vitro culture, Deglet-Nour, Mech-Degla, 2,4-D, AIB, GA3, Organogenesis.

    Citation

    Ahlam GUETTOUCHI , ADMIN Admin , , (2022-07-20), THE EFFECT OF SOME HORMONES ON THE IN VITRO CULTURE OF DATE PALM (PHOENIX DACTYLIFERA L.) OF BOU-SAÂDA, ALGERIA, Pakistan Journal of Botany, Vol:546, Issue:1, pages:2089 - 2093, Pakistan Botanical Society.

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  • 2022-06-20
  • 2022-06-20

    يوم تكويني

    يوم تكويني لطلبة الدكتوراه والاستماع إلى حصائل الطلبة

    Citation

    abderrahmane BEN YETTOU , ADMIN Admin , ,(2022-06-20), يوم تكويني,يوم تكويني لطلبة الدكتوراه,جامعة المسيلة

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  • 2022-06-15
  • 2022-06-15

    دراسة التغيرات الواقعة على التركيب الجسمي من خلال الموسم التدريبي لدى عدائي المسافات الطويلة

    الهدف هو دراسة التركيب الجسمي للرياضيين الجزائريين في سباقات العدو الطويل(5000م, سباق الماراتون ), حيث تم اتباع منهجية علمية في القياسات الجسمية , أنثروبومترية تسمح بتحديد خصائص ومؤشرات التركيب الجسمي للعدائين(الوزن , الطول ,العمر , الكتلة العضلية , الكتلة الشحمية , الكتلة العضلية ) باستخدام صيغ Mateigka,والمجتمع الاحصائي تمثل في عدائي المستوى العالي المشاركين في بطولات وطنية وقارية واولمبية , متمثلة في الفريق الوطني لألعاب القوى , والنادي البترولي) متمثلة في 12 عداء, كقياس الطيات الجلدية, وقياس الطول واخذ العمر الزمني للرياضيين لفئة الاكابر ولقد توصلنا من خلال النتائج التركيب الجسمي بعدم وجود فروق ذات دلالة احصائية بين بداية الموسم(PPG) ونهايته(FC), كما تم التوصل الى توافق مؤشرات وخصائص التركيب الجسمي للعدائين الجزائريين مع عدائي النخبة في دولة (الهند , كرواتيا) goal is to study the body composition of Algerian athletes in intermediate races (5000m, marathon), where a scientific method has been followed in physical measurements, which allows to determine the body composition properties of runners (weight), length, age, muscle mass, fat mass, muscle mass (Using Mateigka, the statistical community represented by the high-level athlete participating in the Olympics, represented by the National Athletics Team) represented by 12 competitors, such as dermatometry, height measurement and age-taking of athletes for the higher category. For a statistical machine between the start of the season (PPG) and the end of the season (FC), the indicators and characteristics of the body basic structure of Algerian runners correspond to the country's elite hostility (India, Croatia)

    Citation

    bentahar smail , ADMIN Admin , مهادي عثمان, , (2022-06-15), دراسة التغيرات الواقعة على التركيب الجسمي من خلال الموسم التدريبي لدى عدائي المسافات الطويلة, بن الطاهر اسماعيل, Vol:10, Issue:1, pages:19, المجلة الجزائرية للعلوم الإجتماعية والإنسانية

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  • 2022-06-14
  • 2022-06-14

    ظاهرة التنمر المدرسي

    ظاهرة التنمر المدرسي –المظاهر، العوامل وآليات الحد منها - (تحليل نظري سوسيولوجي) The phenomenon of school bullying –manifestations, factors and mechanisms - (Sociological theoretical analysis) | ASJP https://www.asjp.cerist.dz/en/article/153522

    Citation

    Yasmina Ketfi , ADMIN Admin , , (2022-06-14), ظاهرة التنمر المدرسي, سوسيولوجيا, Vol:2, Issue:12, pages:200, جامعة باتنة

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  • 2022-06-09
  • 2022-06-09

    A Weighted-based heuristic for Lifetime Maximization in Wireless Sensor Networks

    Lifetime extension plays a crucial issue in wireless sensor network applications. An effective mechanism to extend and maximize the lifetime is to partition the deployed sensors into disjoint subsets of sensors (sensor covers) such that each subset covers all targets completely and works alternatively. Finding the optimum number of disjoint sensor covers is formulated as the set k-cover problem, which has been proved to be NP-complete. This paper presents a novel greedy-based heuristic algorithm to address this problem. It comprises two parts: the first one greedily constructs set covers based on the well-known similarity measure Jaccard factor, and the second one ensures that each set cover will not contain redundant sensors. The proposed heuristic was evaluated on common 1000 benchmark instances and compared to other greedy-based approaches from the literature. Simulation results show its effectiveness in generating good solutions in reasonable computation time and scalability for large problem instances.

    Citation

    Nassereddine Mouhoub , ADMIN Admin , Salaheddine Balamane, ,(2022-06-09), A Weighted-based heuristic for Lifetime Maximization in Wireless Sensor Networks,ECCO XXXV - CO 2022,online

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  • 2022-05-27
  • 2022-05-27

    Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment

    As part of a comprehensive evaluation of post-treatment techniques for the removal of chemical and microbiological pollutants from lagoon effluents, an aerated biofilter was designed. The main objective of this study was to evaluate the performance of pozzolan and Luffa cylindrica as low-cost packing materials for the advanced treatment of Stidia natural lagoon effluent. The aerated biofilter operates in down-flow with HLRs of 11.37 to 28.43 m3 m−2 d−1 and an air/liquid flow ratio of 3 : 1. The different experiments performed on the pilot showed that the percentages of sCOD removal vary with the HLRs and the wastewater concentration at the biofilter inlet. In this study, sCOD removal efficiencies above 78.9 % were achieved depending on HLR, and a maximum removal efficiency of TSS of 71.5 % was obtained for 28.43 m3 m−2 d−1. At low HLR (11.37 m3 m−2 d−1), the treated effluent had the following average concentrations: sCOD of 29.5 mg l−1, BOD5 of 21.7 mg l−1 and TSS of 26.4 mg l−1. These experimental results were used with an empirical model to determine the media constant n and treatability factor K. The faecal coliforms and Escherichia coli detected in the treated effluent were less than 105 CFU/100 ml, which meet the national guidelines for wastewater reuse in irrigation.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , Khalida BEKRENTCHIR , ADMIN Admin , Malika Khellad, Meriem Abaidia, Senouci Boulerial, , (2022-05-27), Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment, Kemija u Industriji-Journal of Chemists and Chemical Engineers, Vol:71, Issue:9, pages:8, HRVATSKO DRUSTVO KEMJIJSKIH INZENJERA I TEHNOLOGA

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  • 2022-05-27
  • 2022-05-27

    Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment

    As part of a comprehensive evaluation of post-treatment techniques for the removal of chemical and microbiological pollutants from lagoon effluents, an aerated biofilter was designed. The main objective of this study was to evaluate the performance of pozzolan and Luffa cylindrica as low-cost packing materials for the advanced treatment of Stidia natural lagoon effluent. The aerated biofilter operates in down-flow with HLRs of 11.37 to 28.43 m3 m−2 d−1 and an air/liquid flow ratio of 3 : 1. The different experiments performed on the pilot showed that the percentages of sCOD removal vary with the HLRs and the wastewater concentration at the biofilter inlet. In this study, sCOD removal efficiencies above 78.9 % were achieved depending on HLR, and a maximum removal efficiency of TSS of 71.5 % was obtained for 28.43 m3 m−2 d−1. At low HLR (11.37 m3 m−2 d−1), the treated effluent had the following average concentrations: sCOD of 29.5 mg l−1, BOD5 of 21.7 mg l−1 and TSS of 26.4 mg l−1. These experimental results were used with an empirical model to determine the media constant n and treatability factor K. The faecal coliforms and Escherichia coli detected in the treated effluent were less than 105 CFU/100 ml, which meet the national guidelines for wastewater reuse in irrigation.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , Khalida BEKRENTCHIR , ADMIN Admin , Malika Khellad, Meriem Abaidia, Senouci Boulerial, , (2022-05-27), Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment, Kemija u Industriji-Journal of Chemists and Chemical Engineers, Vol:71, Issue:9, pages:8, HRVATSKO DRUSTVO KEMJIJSKIH INZENJERA I TEHNOLOGA

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  • 2022-05-27
  • 2022-05-27

    Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment

    As part of a comprehensive evaluation of post-treatment techniques for the removal of chemical and microbiological pollutants from lagoon effluents, an aerated biofilter was designed. The main objective of this study was to evaluate the performance of pozzolan and Luffa cylindrica as low-cost packing materials for the advanced treatment of Stidia natural lagoon effluent. The aerated biofilter operates in down-flow with HLRs of 11.37 to 28.43 m3 m−2 d−1 and an air/liquid flow ratio of 3 : 1. The different experiments performed on the pilot showed that the percentages of sCOD removal vary with the HLRs and the wastewater concentration at the biofilter inlet. In this study, sCOD removal efficiencies above 78.9 % were achieved depending on HLR, and a maximum removal efficiency of TSS of 71.5 % was obtained for 28.43 m3 m−2 d−1. At low HLR (11.37 m3 m−2 d−1), the treated effluent had the following average concentrations: sCOD of 29.5 mg l−1, BOD5 of 21.7 mg l−1 and TSS of 26.4 mg l−1. These experimental results were used with an empirical model to determine the media constant n and treatability factor K. The faecal coliforms and Escherichia coli detected in the treated effluent were less than 105 CFU/100 ml, which meet the national guidelines for wastewater reuse in irrigation.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , Khalida BEKRENTCHIR , ADMIN Admin , Malika Khellad, Meriem Abaidia, Senouci Boulerial, , (2022-05-27), Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment, Kemija u Industriji-Journal of Chemists and Chemical Engineers, Vol:71, Issue:9, pages:8, HRVATSKO DRUSTVO KEMJIJSKIH INZENJERA I TEHNOLOGA

    See publication
  • 2022-05-27
  • 2022-05-27

    Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment

    As part of a comprehensive evaluation of post-treatment techniques for the removal of chemical and microbiological pollutants from lagoon effluents, an aerated biofilter was designed. The main objective of this study was to evaluate the performance of pozzolan and Luffa cylindrica as low-cost packing materials for the advanced treatment of Stidia natural lagoon effluent. The aerated biofilter operates in down-flow with HLRs of 11.37 to 28.43 m3 m−2 d−1 and an air/liquid flow ratio of 3 : 1. The different experiments performed on the pilot showed that the percentages of sCOD removal vary with the HLRs and the wastewater concentration at the biofilter inlet. In this study, sCOD removal efficiencies above 78.9 % were achieved depending on HLR, and a maximum removal efficiency of TSS of 71.5 % was obtained for 28.43 m3 m−2 d−1. At low HLR (11.37 m3 m−2 d−1), the treated effluent had the following average concentrations: sCOD of 29.5 mg l−1, BOD5 of 21.7 mg l−1 and TSS of 26.4 mg l−1. These experimental results were used with an empirical model to determine the media constant n and treatability factor K. The faecal coliforms and Escherichia coli detected in the treated effluent were less than 105 CFU/100 ml, which meet the national guidelines for wastewater reuse in irrigation.

    Citation

    ADMIN Admin , ADMIN Admin , ADMIN Admin , Khalida BEKRENTCHIR , ADMIN Admin , Malika Khellad, Meriem Abaidia, Senouci Boulerial, , (2022-05-27), Low-cost Packing Materials in an Aerated Biofilter for Lagoon Effluent Treatment, Kemija u Industriji-Journal of Chemists and Chemical Engineers, Vol:71, Issue:9, pages:8, HRVATSKO DRUSTVO KEMJIJSKIH INZENJERA I TEHNOLOGA

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  • 2022-05-18
  • 2022-05-18

    Blended Learning of Written Expression as an lnnovative Teaching Mehod: The Case of Written expression teachers at the Department of English at M'sila University

    The world's experience during Pandemic-19 resulted in a surge in demand for online education, which rapidly infiltrated school districts and universities In this respect, an online survey was conducted with the teachers of written expression at M'sila University's Department of English to inquire about their experiences with blended learning of Written expression, which is one of the basic modules in learning English.

    Citation

    assia BAGHDADI , ADMIN Admin , Laadjini Messaouda, ,(2022-05-18), Blended Learning of Written Expression as an lnnovative Teaching Mehod: The Case of Written expression teachers at the Department of English at M'sila University,Academic writing: Challenges and perspectives,Barika university

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  • 2022-05-18
  • 2022-05-18

    لجنة علمية

    يبدو مسرح الطفل ميدانا لا يزال يحتاج إلى اهتمام أكبر

    Citation

    bassem BESTAL , ADMIN Admin , ,(2022-05-18), لجنة علمية,مسرح الطفل في الادب الجزائري,جامعة المسيلة

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  • 2022-03-28
  • 2022-03-28

    أشكال التويزة في مجتمع الزيبان

    أشكال التويزة في مجتمع الزيبان

    Citation

    MOKHTAR Rahab , ADMIN Admin , ADMIN Admin , ADMIN Admin , ,(2022-03-28), أشكال التويزة في مجتمع الزيبان,العادات والممارسات التضامنية في الجزائر " التويزة,CNRPAH

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  • 2022-03-28
  • 2022-03-28

    أشكال التويزة في مجتمع الزيبان

    أشكال التويزة في مجتمع الزيبان

    Citation

    MOKHTAR Rahab , ADMIN Admin , ADMIN Admin , ADMIN Admin , ,(2022-03-28), أشكال التويزة في مجتمع الزيبان,العادات والممارسات التضامنية في الجزائر " التويزة,CNRPAH

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  • 2022-03-28
  • 2022-03-28

    أشكال التويزة في مجتمع الزيبان

    أشكال التويزة في مجتمع الزيبان

    Citation

    MOKHTAR Rahab , ADMIN Admin , ADMIN Admin , ADMIN Admin , ,(2022-03-28), أشكال التويزة في مجتمع الزيبان,العادات والممارسات التضامنية في الجزائر " التويزة,CNRPAH

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  • 2022-03-07
  • 2022-03-07

    التمويل الجماعي كبديل لدعم وتمويل المؤسسات الناشئة

    ملخص: اكتسب التمويل الجماعي شعبية كبيرة كوسيلة للمبدعين ورواد الأعمال للحصول على التمويل وإطلاق مشاريعهم وافكارهم. ومع ذلك، فإن هذه الشعبية المتزايدة لم ترسو بعد في العديد من البلدان النامية التي لا تفتقر إلى المواهب أو الأفكار، ولكنها تفتقر إلى تمويل جهود الابتكار في الأعمال التجارية والتنمية. يمكن للعديد من البلدان النامية في منطقة الشرق الأوسط وشمال إفريقيا على وجه الخصوص التي تواجه أوضاعًا مالية قاسية أن تستفيد بشكل كبير من التمويل الجماعي من أجل إحداث تأثير إيجابي على المجتمعات المحرومة في المنطقة. هدفت هذه الدراسة إلى بناء أساس نظري وتحليلي حول موضوع التمويل الجماعي، بصفته مصدر تمويل للشركات الناشئة، توصلت الدراسة إلى أن التمويل الجماعي يعتبر آلية تمويل مناسبة لزيادة فرص تمويل الشركات الناشئة، فقد تبين أن منصات التمويل الجماعي الناشطة في بعض بلدان الشرق الوسط وشمال إفريقيا، أسهمت في تمويل عدد من الشركات الناشئة، ما من شأنه أن يساعد في سد الفجوة التمويلية المتعلقة بالاستثمارات في الشركات الناشئة. الكلمات المفتاحية: التمويل الجماعي، الشركات الناشئة، منصات التمويل الجماعي.

    Citation

    Salaheddine Abdelaziz , ADMIN Admin , ,(2022-03-07), التمويل الجماعي كبديل لدعم وتمويل المؤسسات الناشئة,المؤسسات الناشئة والتجارة الإلكترونية في الجزائر بين التوجه الاقتصادي للدولة وتحديات الواقع,جامعة عباس لغرور خنشلة

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  • 2022
  • 2022

    تصور مقترح قائم على النمذجة بالفيديو في تنمية مهارات العناية بالذات لدى الطفل التوحدي

    تصور مقترح قائم على النمذجة بالفيديو في تنمية مهارات العناية بالذات لدى الطفل التوحدي

    Citation

    NAOUAL Boudiaf , ADMIN Admin , ,(2022), تصور مقترح قائم على النمذجة بالفيديو في تنمية مهارات العناية بالذات لدى الطفل التوحدي,سيكولوجية الابداع والطفولة,العراق

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  • 2022
  • 2022

    انعكاسات الدروس الخصوصية على الأداء التدريسي بالتعليم الرسمي في الجزائر

    الدروس الخصوصية الأداء التدريسي التعليم الرسمي الجزار

    Citation

    Souhila Boudjellal , ADMIN Admin , ,(2022), انعكاسات الدروس الخصوصية على الأداء التدريسي بالتعليم الرسمي في الجزائر,الدروس الخصوصية في زمن كورونا,مركز اليقظة البداغوجية بجامعة المسيلة

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  • 2022
  • 2022

    Non Destructive Testing for a Multilayer Structure used in Aeronautics by Eddy Current Multi-Sensor System

    The goal of non-destructive testing (NDT) is to determine a part's integrity without causing damage to it. Early diagnosis of a fault in high-risk fields like nuclear or aeronautics can save lives and save significant material and human losses. In the field of non-destructive testing (NDT), eddy current imaging technology is based on multi-element sensors consisting of numerous eddy current probes eddy current probes positioned side by side for data collecting. The assembly of the is possible thanks to multiplexing, which avoids mutual inductance between the individual probes. The ICFMM is designed for non-destructive evaluation of flaws in the area of rivets on aeronautical and other structures, and will allow defect characterisation using 3D pictures that represent impedance variation.

    Citation

    ADMIN Admin , Abdelhak ABDOU , ,(2022), Non Destructive Testing for a Multilayer Structure used in Aeronautics by Eddy Current Multi-Sensor System,1st International Conference on Engineering and Applied Natural Sciences,Konya/Turkey

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  • 2022
  • 2022

    On Anisotropic Parabolic Equations with Variable Nonlinearity

    In this poster, we show you how to prove the existence and the regularity of weak solutions for a class of nonlinear anisotropic parabolic equations with p i (·) growth conditions, degenerate coercivity and L^m(·)data, with m(·) > 1 being small. The functional setting involves Lebesgue-Sobolev spaces with variable exponents.

    Citation

    Hellal ABDELAZIZ , ADMIN Admin , ,(2022), On Anisotropic Parabolic Equations with Variable Nonlinearity,Rencontre d’Analyse Mathématiqueet ses Applications (RAMA),Université de M’Sila

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  • 2022
  • 2022

    Use of the neuronal network in the prediction of the wind on a given site

    Inspired by the functioning of neurons in the brain, neural networks are tools widely used in artificial intelligence in solving statistical problems. To this end, in wind energy, the wind is in perpetual variation, in order to model it and predict its intensity from its average annual speed, we present in this study a method based on the use of artificial neural networks. Using the accumulation of a period of 10 years of measurements of the average annual wind speed of a site in the region of Kaberten, a computer program has been developed under MATLAB to estimate the wind in the years to come. This program makes it possible to predict the wind speed at 10 m from the ground in the year following the measurement period. The results obtained by this method on the Kaberten site are analyzed and discussed.

    Citation

    SAID Zergane , ADMIN Admin , Amar BERKACHE , ,(2022), Use of the neuronal network in the prediction of the wind on a given site,1st International Conference on Innovation Academic Studies,Turkey

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  • 2022
  • 2022

    EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF A TURBULENT BOUNDARY LAYER UNDER VARIABLE TEMPERATURE GRADIENTS

    In this article we present an experimental and numerical study of the behavior of the boundary layer type viscous flow in the presence of the thermal effect. The flow was held in a three-dimensional field with a uniform infinite velocity in the case of an adiabatic wall with heat input. The presented experimental work was performed in the Thermal Laboratory (LET) of the Prime Institute of Poitiers (France). It describes the analysis of a turbulent boundary layer created in a wind tunnel on the surface of a flat plate covered with epoxy resin. An HP 6012A power supply system was used to provide circulating heat flux to heat the flat plate to 80°C by the Joule effect. The numerical result shows a clear difference in the evolution of the thermal boundary layer between the three temperatures of the wall.

    Citation

    Amar BERKACHE , ADMIN Admin , SALAH Amroune , ADMIN Admin , ADMIN Admin , Ali Golbaf, Barhm Mohamad, , (2022), EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF A TURBULENT BOUNDARY LAYER UNDER VARIABLE TEMPERATURE GRADIENTS, Journal of the Serbian Society for Computational Mechanics, Vol:16, Issue:1, pages:15, https://www.slideshare.net/BarhmMohamad/experimental-and-numerical-investigations-of-a-turbulent-boundary-layer-under-variable-temperature-gradients

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  • 2022
  • 2022

    EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF A TURBULENT BOUNDARY LAYER UNDER VARIABLE TEMPERATURE GRADIENTS

    In this article we present an experimental and numerical study of the behavior of the boundary layer type viscous flow in the presence of the thermal effect. The flow was held in a three-dimensional field with a uniform infinite velocity in the case of an adiabatic wall with heat input. The presented experimental work was performed in the Thermal Laboratory (LET) of the Prime Institute of Poitiers (France). It describes the analysis of a turbulent boundary layer created in a wind tunnel on the surface of a flat plate covered with epoxy resin. An HP 6012A power supply system was used to provide circulating heat flux to heat the flat plate to 80°C by the Joule effect. The numerical result shows a clear difference in the evolution of the thermal boundary layer between the three temperatures of the wall.

    Citation

    Amar BERKACHE , ADMIN Admin , SALAH Amroune , ADMIN Admin , ADMIN Admin , Ali Golbaf, Barhm Mohamad, , (2022), EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF A TURBULENT BOUNDARY LAYER UNDER VARIABLE TEMPERATURE GRADIENTS, Journal of the Serbian Society for Computational Mechanics, Vol:16, Issue:1, pages:15, https://www.slideshare.net/BarhmMohamad/experimental-and-numerical-investigations-of-a-turbulent-boundary-layer-under-variable-temperature-gradients

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  • 2022
  • 2022

    EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF A TURBULENT BOUNDARY LAYER UNDER VARIABLE TEMPERATURE GRADIENTS

    In this article we present an experimental and numerical study of the behavior of the boundary layer type viscous flow in the presence of the thermal effect. The flow was held in a three-dimensional field with a uniform infinite velocity in the case of an adiabatic wall with heat input. The presented experimental work was performed in the Thermal Laboratory (LET) of the Prime Institute of Poitiers (France). It describes the analysis of a turbulent boundary layer created in a wind tunnel on the surface of a flat plate covered with epoxy resin. An HP 6012A power supply system was used to provide circulating heat flux to heat the flat plate to 80°C by the Joule effect. The numerical result shows a clear difference in the evolution of the thermal boundary layer between the three temperatures of the wall.

    Citation

    Amar BERKACHE , ADMIN Admin , SALAH Amroune , ADMIN Admin , ADMIN Admin , Ali Golbaf, Barhm Mohamad, , (2022), EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF A TURBULENT BOUNDARY LAYER UNDER VARIABLE TEMPERATURE GRADIENTS, Journal of the Serbian Society for Computational Mechanics, Vol:16, Issue:1, pages:15, https://www.slideshare.net/BarhmMohamad/experimental-and-numerical-investigations-of-a-turbulent-boundary-layer-under-variable-temperature-gradients

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  • 2022
  • 2022

    Heat Transfer By Natural Convection from a Heated Square Inner Cylinder to Its Elliptical Outer Enclosure Utilizing Nanofluids

    In this paper a numerical study of natural convection of stationary laminar heat transfers in a horizontal ring between a heated square inner cylinder and a cold elliptical outer cylinder is presented. A Cu-water nanofluid flows through this annular space. Different values of the Rayleigh number and volume fraction of nanoparticles are studied. The system of equations governing the problem was solved numerically by the fluent calculation code based on the finite volume method and on the Boussinesq approximation. The interior and exterior surfaces are kept at constant temperature. The study is carried out for Rayleigh numbers ranging from 3 10 to 5 10 . We have studied the effects of different Rayleigh numbers and volume fraction of nanoparticles on natural convection. The results are presented as isotherms, isocurrents, and local and mean Nusselt numbers. The aim of this study is to study the influence of the thermal Rayleigh number and volume fraction of nanoparticles on the heat transfer rate.

    Citation

    Abdelkrim BOURAS , Djedid TALOUB , ADMIN Admin , Zied Driss, , (2022), Heat Transfer By Natural Convection from a Heated Square Inner Cylinder to Its Elliptical Outer Enclosure Utilizing Nanofluids, International Journal of Applied Mechanics and Engineering, Vol:27, Issue:2, pages:22-34, sciendo

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  • 2022
  • 2022

    دور المقاولاتية الرياضيةفي دعم سوق العملوالتقليص من البطالة في الجزائر

    تعتبرالمقاولاتية الرياضيةفي دعم سوق العملوالتقليص من البطالة في الجزائر

    Citation

    ABDERAZAK Aroussi , ADMIN Admin , Abdelkader Ghidi , ,(2022), دور المقاولاتية الرياضيةفي دعم سوق العملوالتقليص من البطالة في الجزائر,المقاولاتية الرياضية نحو الاستثمار في الميدان الرياضي,جامعة المسيلة

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  • 2022
  • 2022

    The bet to achieve quality in banking information systems using internal marketing strategies in the National Bank of Algeria

    This research aims to determine the extent to which internal marketing strategies are adopted in Algerian banking institutions as a mechanism of modern management, the extent to which it reflects on the activation and improvement of their information systems quality, and its implications for the performance and competitiveness of Algerian banks.The researchaddresses the most important concepts and elements of the administrative systems and examines the case of one of the most important Algerian banks, the National Bank of Algeria, through a statistical exploratory study depends on a questionnaire directed to the frames of three central agencies: Reghaia, Rouiba, and Boumerdes agencies, leading to identify the relationship between study variables and the testing of their hypotheses.

    Citation

    moussa hadjab , ADMIN Admin , , (2022), The bet to achieve quality in banking information systems using internal marketing strategies in the National Bank of Algeria, مجلة البحوث في العلوم المالية والمحاسبية, Vol:7, Issue:1, pages:22, جامعة محمد بوضياف المسيلة

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  • 2022
  • 2022

    Investigation on substrate effect on physical characteristics of CuO-sprayed thin films suitable for photovoltaic application: Ag/ZnO: Sn(n)/CuO(p)/SnO2: F

    In this paper to compare the growth and optoelectronic properties of copper oxide (CuO) materials suitable for advanced application, CuO layers were synthesized on glass and SnO2:F). The X-ray diffraction analysis showed that CuO nanoparticles were formed in pure monoclinic structure where crystallite size decreases from 37.39 to 33.44 nm when the substrate changed, respectively, from glass to SnO2:F/glass. This crystallite size reduction was related to the energy band gap (Eg) enlargement from 1.455 to 1.525 eV due to the quantum confinement effect. Eg values were almost equal to the theoretical one for converting solar energy into electrical energy and CuO may be used as an absorber material in photovoltaic devices. Electrical characteristics were studied using the impedance spectroscopy technique at room temperature and confirmed by the Hall Effect measurements. CuO/SnO2:F/glass thin films have best electrical parameters and consequently the Ag/ZnO:Sn(n)/CuO(p)/SnO2:F photocell was elaborated and its J-V characteristics were analyzed.

    Citation

    ADMIN Admin , Ajili Mejda, Debbabi Samar, Turki-Kamoun Najoua, , (2022), Investigation on substrate effect on physical characteristics of CuO-sprayed thin films suitable for photovoltaic application: Ag/ZnO: Sn(n)/CuO(p)/SnO2: F, Materials Technology, Vol:37, Issue:, pages:381, Taylor & Francis Online

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  • 2022
  • 2022

    etude de l'adsorption d'un colorant organique en solutions aqueuses sur un charbon actif

    Dans cette étude, du charbon actif économique et écologique a été synthétisé à partir de résidus de poudre de palme. Le charbon activé préparé a été utilisé pour absorber les colorants organiques d'une solution aqueuse. Pour examiner le potentiel d'adsorption du carbone, des expériences d'adsorption discontinues ont été effectuées. Différents facteurs tels que l'indice d'iode, l'indicateur de bleu de méthylène, le pH (2-12), la dose d'adsorbant (1-5 g/L), le temps de contact (20-600 min) et les concentrations initiales de colorant (50-800 ppm) ont été évalués. . La spectroscopie FTIR a été utilisée pour évaluer des composés en solution avant et après l'adsorption. Des modèles isothermes de Langmuir et de Freundlich ont été appliqués aux données expérimentales.

    Citation

    SABAH Djaber , ADMIN Admin , ,(2022), etude de l'adsorption d'un colorant organique en solutions aqueuses sur un charbon actif,national conference on Materials, Energy end Environment (NCMEE42022),university of mohamed khider biskra

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  • 2022
  • 2022

    قطاع التأمين الجزائري كأحد أوجه التنمية الاقتصادية -دراسة تحليلية للفترة 2006-2020

    ئئئئ

    Citation

    TOUFIK Ghafsi , ADMIN Admin , ,(2022), قطاع التأمين الجزائري كأحد أوجه التنمية الاقتصادية -دراسة تحليلية للفترة 2006-2020,تعزيز مساهمة قطاع التأمين في التنمية الاقتصادية في الجزائر,جامعة المسيلة

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  • 2022
  • 2022

    Using behavior mapping to evaluate the using efficiency of public square Case study: November 1st, 1954 Square in M'sila city.

    Human behaviour and social interactions in public places are the results of mental processes that are affected by the different components of these spaces. These components may be physical, social, cultural or sensory, but they all have in common the ability to influence the behaviour of users in the public sphere. Consequently, human behavior can be affected by the presence of physical and environmental features of public places such as buildings, streets, landforms and even occupation by other people. The physical components of public spaces can have a deep impact on how people behave, live and interact in public spaces. This paper aims to highlight the use of public squares in M'sila city , by relating the physical characteristics and behaviour of users within these squares. The analysis was based on the behavioural map approach, which combines two complementary research techniques: direct observation and the questionnaire. To achieve the results, the data was analysed by SPSS and represented by the GIS program. The study concluded that there is a mismatch in the reciprocal relationship between human behaviour and the physical environment of 1st November, 1954 Square, which has resulted in negative effects on human behaviour, which in turn has affected the physical environment of the square too.

    Citation

    Hynda BOUTABBA , ADMIN Admin , ADMIN Admin , Nabyl Chenaf, , (2022), Using behavior mapping to evaluate the using efficiency of public square Case study: November 1st, 1954 Square in M'sila city., Bulletin of the Serbian geographical society. (GSGD),, Vol:102, Issue:2, pages:283-298, Gdansk University of Technology IT Service Centre

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  • 2022
  • 2022

    Using behavior mapping to evaluate the using efficiency of public square Case study: November 1st, 1954 Square in M'sila city.

    Human behaviour and social interactions in public places are the results of mental processes that are affected by the different components of these spaces. These components may be physical, social, cultural or sensory, but they all have in common the ability to influence the behaviour of users in the public sphere. Consequently, human behavior can be affected by the presence of physical and environmental features of public places such as buildings, streets, landforms and even occupation by other people. The physical components of public spaces can have a deep impact on how people behave, live and interact in public spaces. This paper aims to highlight the use of public squares in M'sila city , by relating the physical characteristics and behaviour of users within these squares. The analysis was based on the behavioural map approach, which combines two complementary research techniques: direct observation and the questionnaire. To achieve the results, the data was analysed by SPSS and represented by the GIS program. The study concluded that there is a mismatch in the reciprocal relationship between human behaviour and the physical environment of 1st November, 1954 Square, which has resulted in negative effects on human behaviour, which in turn has affected the physical environment of the square too.

    Citation

    Hynda BOUTABBA , ADMIN Admin , ADMIN Admin , Nabyl Chenaf, , (2022), Using behavior mapping to evaluate the using efficiency of public square Case study: November 1st, 1954 Square in M'sila city., Bulletin of the Serbian geographical society. (GSGD),, Vol:102, Issue:2, pages:283-298, Gdansk University of Technology IT Service Centre

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  • 2022
  • 2022

    Assessing urban vulnerability to landslides using the analytic hierarchy process (AHP). Case study of the municipal head of djebahia in Algeria

    Djebahia is an average city in the Algerian centre, reported to have many risks related to landslides, with very important indices of instabilties. The recurence of damag￾ing events in this locality has shown the fragilty of its urban system. The main objective of this article is to analyse the urban vulnerabilty in Djebahia municipality by determining the physical condition of its urban structure. The procedures for the analysis of factors at the origin of the risk in this city are mainly derived from the spatial analysis program, repre￾sented by the geographic information system software (ARCMAP), which contains a set of tols faciltating the proces analysis. The present research was based on the analytic hier￾archy proces (AHP) of Thomas Laurie Saty (190), which belongs to a series of multi-cri￾teria aproaches. The analysis showed thre levels of urban vulnerabilty: high, medium, and low, while the elements most afected by landslides are equipment, colective, and individual housing. These results were translated into a map of urban vulnerabilty to landslide risk.

    Citation

    Hynda BOUTABBA , ADMIN Admin , Naima Dilmi@univ-msila.dz, , (2022), Assessing urban vulnerability to landslides using the analytic hierarchy process (AHP). Case study of the municipal head of djebahia in Algeria, Bulletin of the Serbian geographical society. (GSGD), Vol:102, Issue:, pages:185-200, Gdansk University of Technology IT Service Centre

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  • 2022
  • 2022

    Social behavior in the outdoor spaces of social housing. Case of the neighborhood of 500 housing units in the city of M’sila (Algeria)

    Since Algeria’s independence in 1962, Algerian towns have experienced strong population growth at a rate of over 3.2% and a considerable rural exodus causing a housing crisis. In order to quickly resolve this crisis, the state adopted the policy of industrialization of housing. During this period, social housing was the model best suited to the social, eco￾nomic and political situation of the country. Consequently, during the mass production of social housing, a fundamental parameter was ignored: the quality of the living environ￾ment in the outdoor spaces of these social neighbourhoods. This has caused the emergence of multiple remarkable social behaviours. This article discusses the impact of outdoor spaces in one of the most important neighbourhoods of the city of M’sila with 500 collec￾tive social housing units on the socio-spatial behaviour of different categories of inhabit￾ants. This research combined the techniques of direct observation, interviewing and the social use approach of Gehl. The results of the study will identify the impact of outdoor spaces on the behaviour of residents of social housing to be able to remedy in future urban development and architectural designs.

    Citation

    Hynda BOUTABBA , ADMIN Admin , Walid Arab@univ-msila.dz, , (2022), Social behavior in the outdoor spaces of social housing. Case of the neighborhood of 500 housing units in the city of M’sila (Algeria), Bulletin of the Serbian geographical society. (GSGD), Vol:102, Issue:1, pages:199-208., Gdansk University of Technology IT Service Centre

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  • 2022
  • 2022

    مستوى ممارسة مهارات الادارة الصفية وفق متطلبات التعلم النشطلدى اساتذة التعليم الابتدجائي

    الكشف عن مدى ممارسة اساتذة التعليم الابتدائي لمهارات الادارة الصفية وفق متطلبات التعلم النشط

    Citation

    azzouz ketfi , ADMIN Admin , , (2022), مستوى ممارسة مهارات الادارة الصفية وفق متطلبات التعلم النشطلدى اساتذة التعليم الابتدجائي, مجلة العلوم الاجتماعية والانسانية, Vol:12, Issue:1, pages:866-891, جامعة المسيلة

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  • 2022
  • 2022

    Les mobilités douces dans la chaine des déplacements intermodaux et multimodaux

    L’importance de la mobilité urbaine ne cesse d’augmenter au fil des ans dans les processus de développement des villes. En effet l’étalement urbain et le développement fulgurant dans divers secteurs entraînent une croissance de la mobilité rendant les moyens de déplacement motorisés nécessaires pour effectuer les déplacements quotidiens. La conséquence de ce développement est l’apparition de nombreux problèmes sur le triple plan socio-économique et environnemental, Notamment la congestion routière, la fragmentation écologique, différents types de pollutions qui conduisant à l’amplification du stress urbain. Cependant la mobilité reste une condition nécessaire à l’exercice de tous nos droits et devoirs fondamentaux (Orfeuil, 2011). Pour concilier entre ces devoirs et ce droit, les pouvoirs publics développent des politiques cohérentes et continues pour allier l’application des principes de développement durable à la problématique de la mobilité urbaine ; parmi elles : la mise en place d’offres de transports en commun de haute qualité, la facilitation des déplacements pédestres et cyclistes ainsi que les aménagements en faveur de ces éco-mobilités. L’Algérie, comme la plupart des pays en voie de développement n’est pas épargnée par le phénomène de congestion routière. En raison de l’ampleur de l’enjeu socio-économique et environnemental, les autorités ce sont engager à adopter des reformes de développement durable et d’éco mobilité dans les stratégies de développement des pôles urbains. La ville de Bejaia a pu bénéficier de plans d’urbanisme et de circulation qui, théoriquement, plaident en faveur de l’urgence à introduire l’éco mobilité. Les nombreux constats négatifs observés dans la ville de Bejaia tels que la congestion de son réseau routier, son inadaptation aux modes de transport alternatifs à la voiture, la dégradation du réseau viaire urbain, ainsi que l’insuffisance en matière de signalisation et de stationnement, de même que l’insuffisance d’aménagements spécifiques pour les piétons, que ce soit pour les personnes à mobilité réduite ou bien les usagers des deux roues, révèlent que la mobilité urbaine au lieu de jouer son rôle de levier devient un frein au développement rationnel de cette ville. La présente communication se focalisera sur une l’étude comparative entre les politiques urbaines en faveur des déplacements doux dans la ville de Bejaïa, et leurs réelles applications sur terrain. L’objectif de cette étude est double, d’une part, il s’agit d’identifier les mécanismes qui ont contribué aux diverses nuisances engendrées par les différents modes de déplacement au centre-ville, notamment la congestion routière. D’autre part d’identifier les difficultés d’application des principes d’éco-mobilité dans cette ville.

    Citation

    Hynda BOUTABBA , ADMIN Admin , Ouahiba Idjraoui, ,(2022), Les mobilités douces dans la chaine des déplacements intermodaux et multimodaux,Inter-Modalité et Multi-modalité : enjeux de la mobilité durable dans la ville algérienne,Alger

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  • 2022
  • 2022

    مساهمة الصحافة الرياضية المتخصصة في نشر ثقافة التمويل الرياضي لدى فرق كرة القدم الجزائرية المحترفة

    يهدف البحث الى معرفة أهمية الصحافة الرياضية المتخصصة الجزائرية ومدى مساهمتها في نشر ثقافة التمويل الرياضي لدى فرق كرة القدم الجزائرية المحترفة بالجزائر ، فيظل دخولها الاحتراف الرياضي على عينة من (الصحفيين في الصحافة الرياضية)، والدراسة المسحية أجريت على الصحفيين بولاية الجزائر ،حيث إعتمدنا على المنهج الوصفي والذي يهدف إلى جمع المعلومات وتنظيمها وكشف جوانبها ووصفها ، وإستعملنا في ذلك إستمارة إستبيانيه والتي تضمنت مجموعة من الأسئلة مقسمة على ثلاث محاور ووزعت على 25 صحفي وهي عينة تمثيلية لمجتمع الدراسة80 إعلامي من "جريدة الهداف وجريدة الخبر الرياضي وجريدةle Buteur وبعد معالجة النتائج التي أسفر عنها الاستبيان بواسطة الحزمة الاحصائية spss وخلصت الدراسة الى أهم النتائج التالية : إن الصحافة الرياضية المتخصصة تساهم في نشر ثقافة التمويل الرياضي لدى فرق كرة القدم الجزائرية المحترفة في الجزائر، من خلال التعريف بقوانين التمويل الرياضي وتقديم وعرض أنواع مصادره . .الكلمات المفتاحية: الصحافة الرياضية المتخصصة ؛ التمويل الرياضي ؛ كرة القدم ،النادي الرياضي . Abstract The research aims to know the importance of the Algerian specialized sports press and the extent of its contribution to spreading of sports funding culture among the Algerian professional football teams. The survey study was conducted on sports journalists in the province of Algiers. We adopted the descriptive approach, which aims to collection of information, its organization and its description. We used a questionnaire included a set of questions divided into three axes and distributed to 25 journalists, which constitute a representative sample of the study community composed of 80 journalists from "El-Haddaf newspaper” , El Khabar Erriadi newspaper” and “Le Buteur. "After the procession of the results of the questionnaire using the Statistical Package for the Social Sciences (SPSS), the study concluded to the following results: The specialized sports press contributes to spreading the culture of sports funding among Algerian professional football teams , through the introduction of sports funding laws and the presentation its types of sources .Keywords : specialized sports press, sports funding, football. Professional sports club Résumé La recherche vise à connaître l'importance de la presse sportive spécialisée algérienne et l'étendue de sa contribution à la diffusion de la culture du financement du sport parmi les équipes algériennes de football professionnel. L'enquête a été réalisée auprès de journalistes sportifs de la province d'Alger. Nous avons adopté l'approche descriptive, qui vise la collecte d'informations, son organisation et sa description. Nous avons utilisé un questionnaire comprenant un ensemble de questions divisé en trois axes et distribué à 25 journalistes, qui constituent un échantillon représentatif de la communauté d'étude composée de 80 journalistes du "journal El-Haddaf", du journal El Khabar Erriadi "et" Le Buteur. "Après la procession des résultats du questionnaire à l'aide du Paquet Statistique des Sciences Sociales (SPSS), l'étude a conclu aux résultats suivants: La presse sportive spécialisée contribue à diffuser la culture du financement du sport parmi les équipes algériennes de football professionnel, à travers l'introduction des lois sur le financement du sport et la présentation de ses types de sources .Mots clés: presse sportive spécialisée, financement du sport, football. Club de sport

    Citation

    makhlouf mendjhi , Abdelouahab zouaoui , Nadir BOUSLAH , ADMIN Admin , , (2022), مساهمة الصحافة الرياضية المتخصصة في نشر ثقافة التمويل الرياضي لدى فرق كرة القدم الجزائرية المحترفة, مجلة العلوم الانسانية, Vol:33, Issue:2, pages:35-48, جامعة منتوري قسنطينة

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  • 2022
  • 2022

    التسيير المالي والمحاسبي للجمعيات والنوادي الرياضية الهاوية / النادي الرياضي للهواة - اتحاد برهوم لكرة القدم -

    تهتم هذه الدراسة بموضوع التسيير المالي والمحاسبي للجمعيات والنوادي الرياضية الهاوية، حيث هدفت الدراسة إلى معرفة موارد النادي الرياضي الهاوي محل الدراسة، والتعرف على التسيير المالي للنادي الرياضي محل الدراسة، اعتمدت الدراسة على المنهج الوصفي وذلك من أجل إبراز الإطار النظري للموضوع، أما الجانب التطبيقي استعملنا المنهج التحليلي لدراسة الحالة، كما تمت المعالجة عن طريق ملاحظة وتحليل الوثائق المقدمة من طرف النادي الرياضي للهواة اتحاد برهوم لكرة القدم حيث أخذنا أهم العناصر التي تساعدنا على حساب بعض النسب المئوية للوصول إلى أثر التسيير المالي، ومن أجل تحقيق أهداف الدراسة واختبار فرضياتها تم استخدام برنامج Microsoft Office Excel 2010 لحساب مختلف النسب المئوية بالإضافة إلى رسم الأشكال البيانية. وأظهرت النتائج عدم اعتماد معايير لتوزيع الميزانية على مختلف نشاطات النادي الرياضي، الاعتماد على المؤهلين عمليا وترك المتخصصين من ذوي الخبرة والكفاءة في التسيير المالي والمحاسبي، عدم كفاية مصادر التمويل الحالية، أي انها لا تفي بمتطلبات واحتياجات النادي، عدم التنويع في مصادر تمويلها لتلبية حاجياتها وتفادي الازمات المالية التي لها تأثير مباشر على نتائج أداء النادي الرياضي، لابد على مديرية الشباب والرياضة إعطاء اهتمام أكثر للجمعيات والنوادي الرياضية، من ناحية التمويل.

    Citation

    Nadir BOUSLAH , ADMIN Admin , noureddine.berbache@univ-msila.dz, , (2022), التسيير المالي والمحاسبي للجمعيات والنوادي الرياضية الهاوية / النادي الرياضي للهواة - اتحاد برهوم لكرة القدم -, مجلة روافد للدراسات والابحاث في علوم الرياضة, Vol:2, Issue:2, pages:49-66, +جامعة المسيلة

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  • 2022
  • 2022

    REDISCOVERY OF OPHRYS OMEGAIFERA SUBSP. HAYEKII (H. FLEISCHM. & SOÓ) KREUTZ AND DACTYLORHIZA MARKUSII (TINEO) H. BAUMANN & KÜNKELE IN THE REGION OF TIZI OUZOU (GREAT KABYLIA, ALGERIA)

    Botanical surveys were carried out in spring 2022 in the wilaya of Tizi Ouzou, allowing the rediscovery of Ophrys omegaifera subsp. hayekii and Dacylorhiza markusii. Ecological ratings are also provided. This rediscovery will enrich the Algerian orchid flora in general and that of the Tizi Ouzou region in particular.

    Citation

    Khellaf REBBAS , ADMIN Admin , ZINEB Bensisaid , , (2022), REDISCOVERY OF OPHRYS OMEGAIFERA SUBSP. HAYEKII (H. FLEISCHM. & SOÓ) KREUTZ AND DACTYLORHIZA MARKUSII (TINEO) H. BAUMANN & KÜNKELE IN THE REGION OF TIZI OUZOU (GREAT KABYLIA, ALGERIA), Journal of EcoAgriTourism, Vol:48, Issue:2, pages:1-8, Journal of EcoAgriTourism

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  • 2022
  • 2022

    الشعر الشعبي عند أولاد نايل دراسة في التراث السردي للقبيلة

    كثيرا ما يتبادر إلى ذهن كثير من الناس أن الشعر الشعبي ما هو إلا شعر وضيع مبتذل رخيص إذ نصف الشعر الشعبي يالسلطة العفوية، إن لم نقل السذاجة أحيانا كما أن الشعر الشعبي هو ما يستوحى من الشعب على اختلاف طبقاته، ويفيض بروحه وبعبر عن ذوقه ومشاعره ويصور مستوى حياته ويظهر ثقافته سواء أكان مسجلا بالكتابة أم تتداوله الشفاه صادرا عن فرد أو جماعة، ناشئا في قرية أو مدينة فهو الشعر الذي يصور طقوس الحياة في جوانبها الاجتماعية والسياسية بصورة يغلب عليها طابع التعميم والنزوع الأخلاقي، يصطبغ الشاعر بروح دينية هي أقرب إلى المثالية منها إلى تحليل الظواهر والظروف المتداخلة. ومن هذا المنطلق نطرح التساؤل الآتي: ما هي مقومات القصيدة عند أولاد نايل؟ وكيف تجلى الموروث الشعبي عند شعراء أولاد نايل؟

    Citation

    nasser mohammed elhassani TIS , ADMIN Admin , ,(2022), الشعر الشعبي عند أولاد نايل دراسة في التراث السردي للقبيلة,الأنثروبولوجيا والأدب الشعبي,جامعة محمد بوضياف بالمسيلة

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  • 2022
  • 2022

    تيمات الشعرية عند مدرسة البعث والإحياء -محمود سامي البارودي وأحمد شوقي أنموذجا-

    قد عرف العرب قديما إنتاجا غزيرا للمادة الفنية خصوصا في مجال الشعر، فقد كان للعرب دواوين ومختارات شعرية، لكن ما لبث هذا طويلا فقد عرف الإنتاج الفني ركودا وهو ما عرف بالأدب في عصر الانحطاط والضعف، وفي العصر الحديث وخصوصا في أواخر القرن التاسع عشر( )91أحس أدباء العرب بضرورة التغير والنهوض بأدب يرقى ويتساوى مع الآداب الأخرى، فظهرت نهضة سميت بالنهضة العربية أو الأدب في عصر النهضة. ونحن في هذه الورقة البحثية سنحاول معرفة حقيقة الاتجاه المعروف بمدرسة الإحياء والبعث، وأهم التحولات التي طرأت على شعرنا العربي في هذه المرحلة، وذلك من خلال تتبع أهم الخصائص التي أتى بها شعراء هذه المدرسة.

    Citation

    nasser mohammed elhassani TIS , ADMIN Admin , , (2022), تيمات الشعرية عند مدرسة البعث والإحياء -محمود سامي البارودي وأحمد شوقي أنموذجا-, العمدة في اللسانيات وتحليل الخطاب, Vol:6, Issue:1, pages:12, مخبر الدراسات اللغوية بين النظرية والتطبيق جامعة المسيلة

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  • 2022
  • 2022

    أزمة المناهج النقدية الحديثة عند النقاد العرب المحدثين -الجانب النفسي في دراسات عز الدين إسماعيل-

    حلذ حزوس الاججاه الىفس ي في الىلذ اللشبي الخذًث طاسبت في ؤكماق الترار اللشبي وكذ الخفذ بلع الىلاد لذساظت ما فُه مً ؤظغ وملا خـاث هفعُت في مداولت لخإهُل هزا الاججاه في الىلذ اللشبي الخذًث م ًخلا ٌالترار اللشبي. فالأدب هى الشخم الزي ًدخظً الىفغ الؤوعاهُت بىىاصكها وخالاتها، وهـشا للؤهمُت التي اهفشد بها االإىهج الىفس ي جؼىسث دساظاجه في هزا االإُذان ومً بُنها هـشٍت الىلذ الىفعاوي التي جىاولىاها في بدثىا هزا

    Citation

    nasser mohammed elhassani TIS , ADMIN Admin , , (2022), أزمة المناهج النقدية الحديثة عند النقاد العرب المحدثين -الجانب النفسي في دراسات عز الدين إسماعيل-, مجلة الرسالة للدراسات والبحوث الإنسانية, Vol:7, Issue:2, pages:10, جامعة العربي التبسي تبسة

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  • 2022
  • 2022

    Performances Analysis of Fractional System using The Fractional Order Adaptive PID controller

    Abstract. The applications of fractional order systems in a range of scientific fields have caught the attention of researchers, especially in control strategy. The current research work presents the use of the fractional adaptive PID controller approach, optimized by a genetic algorithm, to improve the performances (rise time, setting time, and overshoot) for fractional systems by introducing a fractional order integrator and differentiator in the classical feedback adaptive PID controller. To validate the arguments, the effectiveness and performance analysis of the proposed approach optimized by genetic algorithms have been studied in comparison to the classical adaptive PID controller. Numerical simulation and analysis are presented to verify the best controller. The fractional order adaptive PID gives the best result in terms of settling time, rise time, overshoot, and mean absolute error. Keywords: Fractional System, Fractional Adaptive PID controllers, Genetic Algorithm, Comparative performance analysis.

    Citation

    Khatir KHETTAB , ADMIN Admin , ,(2022), Performances Analysis of Fractional System using The Fractional Order Adaptive PID controller,the Fifth international conference on Electrical engineering and control application,Khenchela-Algeria

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  • 2022
  • 2022

    Intérêt du piégeage massif (Olipe) de Bactrocera oleae et appréciation de ses attaques sur les olives dans un verger oléicole à Melouza (M’sila)

    Intérêt du piégeage massif (Olipe) de Bactrocera oleae et appréciation de ses attaques sur les olives dans un verger oléicole à Melouza (M’sila)

    Citation

    Mourad KHALDI , Ghania BARECH , ADMIN Admin , ,(2022), Intérêt du piégeage massif (Olipe) de Bactrocera oleae et appréciation de ses attaques sur les olives dans un verger oléicole à Melouza (M’sila),CONFERENCE NATIONALE PROTECTION DES PLANTES ET PRESERVATION DES MILIEUX NATURELS STEPPIQUES,Université de M'sila

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  • 2022
  • 2022

    Improved Decentralized SO-CFAR and GO-CFAR Detectors via Moth Flame Algorithm

    Optimization of distributed constant false alarm rate (CFAR) system parameters is an essential part in radar detection applications. In this work, the moth flame algorithm (MFO) is proposed as an optimization tool to compute scale factors of distributed Greatest of-CFAR (GO- CFAR) and Smallest of-CFAR (SO-CFAR) detectors in presence of Gaussian disturbance. Local binary decisions are obtained firstly from different sensors, at the fusion center, a fusing rule is applied to obtain a global decision. Detection performances comparisons are conducted against previous works using Gray Wolf Optimization (GWO) and Biography Based Optimization (BBO) methods. Simulation results show that the proposed optimizer demonstrates a slight superiority in some cases for ensuring fixed probability of false alarm and higher detection probabilities.

    Citation

    Taha hocine Kerbaa , AMAR Mezache , Houcine OUDIRA , ADMIN Admin , ,(2022), Improved Decentralized SO-CFAR and GO-CFAR Detectors via Moth Flame Algorithm,2022 International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE),M'sila, Algeria

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  • 2022
  • 2022

    Study Of The Evolution Of Land Use In The M'cif Region, Msila, Algeria: Analysis Of The Modifications And Degradation Of Natural Resources Linked To Desertification

    This study aims at analyzing and detecting the evolution and the changes in the lands occupation in the region of M'cif (Msila, Algeria) during 2000-2020. The spatiotemporal survey was conducted using three Landsat satellite images (TM-2000, ETM+-2010, and OLI-2020). A supervised classification technique using the maximum likelihood algorithm has been used for the classification of the use of the lands to generate thematic maps with six main classes. The evaluation of the precision has been applied for each map based on a random method. Moreover, a post-classification technique has been carried out so as to provide a detailed matrix of the changes between 2000 and 2020. Findings confirm that the grassland is subject to very advanced degradation (-130.154 Km2) and that the sand dunes, the agriculturallands, sebkhas, and the urban zone have progressed to + 2.17 Km2, + 16.19 Km2, + 49.66 Km2, +1.21 Km2, respectively. Besides, the study zone is disordered by a rupture of equilibrium between the natural resources and the very high demands of the local people.

    Citation

    Djamila MADANI , ADMIN Admin , ADMIN Admin , , (2022), Study Of The Evolution Of Land Use In The M'cif Region, Msila, Algeria: Analysis Of The Modifications And Degradation Of Natural Resources Linked To Desertification, Webology, Vol:19, Issue:6, pages:346-359, University of Tehran, Iran

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  • 2022
  • 2022

    Study Of The Evolution Of Land Use In The M'cif Region, Msila, Algeria: Analysis Of The Modifications And Degradation Of Natural Resources Linked To Desertification

    This study aims at analyzing and detecting the evolution and the changes in the lands occupation in the region of M'cif (Msila, Algeria) during 2000-2020. The spatiotemporal survey was conducted using three Landsat satellite images (TM-2000, ETM+-2010, and OLI-2020). A supervised classification technique using the maximum likelihood algorithm has been used for the classification of the use of the lands to generate thematic maps with six main classes. The evaluation of the precision has been applied for each map based on a random method. Moreover, a post-classification technique has been carried out so as to provide a detailed matrix of the changes between 2000 and 2020. Findings confirm that the grassland is subject to very advanced degradation (-130.154 Km2) and that the sand dunes, the agriculturallands, sebkhas, and the urban zone have progressed to + 2.17 Km2, + 16.19 Km2, + 49.66 Km2, +1.21 Km2, respectively. Besides, the study zone is disordered by a rupture of equilibrium between the natural resources and the very high demands of the local people.

    Citation

    Djamila MADANI , ADMIN Admin , ADMIN Admin , , (2022), Study Of The Evolution Of Land Use In The M'cif Region, Msila, Algeria: Analysis Of The Modifications And Degradation Of Natural Resources Linked To Desertification, Webology, Vol:19, Issue:6, pages:346-359, University of Tehran, Iran

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  • 2022
  • 2022

    Impact of Human Factor on the Desertification Process in the M'Cif Region, Msila, Algeria

    This research revolves around the anthropic factors and their role in the expansion of desertification in the region M'cif in the state of Msila (Algeria) because this problem is one of the most dangerous environmental phenomena in arid and semi-arid areas. Thus, the study area is located in a dry climate and is subject to the emergence of desertification on its lands. The study aims at identifying the anthropic factors that impact the emergence and aggravation of the problem of desertification, including population density, the power of the legal regime, grazing, and irrigation methods that leave vast tracts of agricultural land unproductive.

    Citation

    Djamila MADANI , ADMIN Admin , , (2022), Impact of Human Factor on the Desertification Process in the M'Cif Region, Msila, Algeria, Tobacco Regulatory Science (TRS), Vol:8, Issue:1, pages:2644-2653, Tobacco Regulatory Science

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  • 2022
  • 2022

    Numerical solutions for linear fractional differential equation with dependence on the Caputo-Hadamard derivative using finite difference method

    The main objective of this paper is to find accurate solutions for linear fractional differential equations involving the fractional Caputo-Hadamard derivative of order α > 0. Therefore, to achieve this objective, a new method called the Finite Fractional Difference Method (FFDM) is employed to find the numerical solution. As such, the convergence and stability of the numerical scheme is discussed and illustrated by solving two linear fractional differential equation problems of order 0 < α<=1 to show the validity of our method.

    Citation

    KAOUTHER Bouchama , Abdelkrim MERZOUGUI , YACINE Arioua , ADMIN Admin , , (2022), Numerical solutions for linear fractional differential equation with dependence on the Caputo-Hadamard derivative using finite difference method, Palestine Journal of Mathematics, Vol:11, Issue:, pages:28-36, Nouressadat Touafek

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  • 2021-12-30
  • 2021-12-30

    أهمية تحليل سووت SWOT في المؤسسة الاقتصادية لتحقيق الميزة التنافسية حالة شركة هواوي للهواتف الذكية نموذجا

    هدفت هذه الدراسة الى تسليط الضوء على اهمية استخددا لليتس ستوفي لم المةسستة اادخةتاكية فيكيتا يتا ا يستاهه لم لزيز تا لميتز تنافستية، ثيتا ت اعخمتاك شتركة هتوافيه لل واتتا الذكيتة كنمتوقق لمةسستة ثززتت ميتز تنافستية باعخماكهتا علتى لليتس ستوفي ، فيأفيصتت الدراسة: بضرفير اعخماك لليس SWOT ما دبس المةسسا اادخةاكية لمعرفة نزاط الزتو فيالضتعا فيالصترا فيالخ ديتدا متا اجتس لزيت الميز الخنافسية، فيالسعي لرصد تغيرا عناصر البيئة الداخلية فيالبيئة الخارجيتة بقتزي ا العامتة فيالخاصتة بقتيس مستخمر لخيتو أساستا لخ ت وير علادا تصاعلية ناجحة بهدف تعظيه ااسخصاك ما نزاط الزو التي تمخلي ا فيالصرا التي تخيح ا البيئة الخارجية للمةسسا اادخةاكية. الكلمات الدالة: البيئة الداخلية فيالخارجية، المةسسة اادخةاكية، الميز الخنافسية، شركة هوافيه، لليس swo

    Citation

    Nabila DJAIDJA , ADMIN Admin , , (2021-12-30), أهمية تحليل سووت SWOT في المؤسسة الاقتصادية لتحقيق الميزة التنافسية حالة شركة هواوي للهواتف الذكية نموذجا, مجلة العلوم الاقتصادية والتجارية وعلوم التسيير, Vol:14, Issue:2, pages:15, جامعة المسيلة

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  • 2021-12-01
  • 2021-12-01

    الدور السوسيوتربوي لمؤسسات التنشئة الاجتماعية في الحد من ظاهرة التنمر الرياضي

    مخلص: يعد التنمر من الظواهر الاجتماعية الشائكة في الوقت الحاضر والتي بدأت تتسع دائرته كل يوم على اختلاف أشكاله وأنواعه ومظاهره من تنمر أسري وتنمر مدرسي وتنمر الأصدقاء ضد بعضهم بعض وتنمر رياضي وغيرها ، ولكننا في هذا المقال سنركز على التنمر الرياضي، وهذا لأنه لم يلق الاهتمام الكافي من الجانب النظري حيث أغلب الباحثين يركزون على أنواع التنمر الأخرى ويهملون هذا النوع، فتفسير ظاهرة التنمر الرياضي نظريا ضرورة ملحة لفهما فهم عميق يساعد على علاجها والحد منها، فنهدف من مقالها هذا تحديد الدور السوسيو تربوي للمؤسسات الاجتماعية من أسرة ومدرسة وجماعة رفاق ووسائل الإعلام في الحد من ظاهرة التنمر الرياضي ، محاولة منا للفت الانتباه إلى معالجة الظاهرة من أجل تنشئة اجتماعية صالحة لفرد في الأسرة والمدرسة وكل المؤسسات الاجتماعية الأخرى، والوقوف على أهم الحلول والاقتراحات للحد من انتشار هذه الظاهرة في المجتمع والملاعب على وجه الخصوص. الكلمات المفتاحية : التنمر، العنف، الرياضة، المؤسسات الاجتماعية.

    Citation

    FATTOUM BELKOBBI , Yasmina Ketfi , ADMIN Admin , , (2021-12-01), الدور السوسيوتربوي لمؤسسات التنشئة الاجتماعية في الحد من ظاهرة التنمر الرياضي, مجلة الإبداع الرياضي, Vol:12, Issue:2, pages:333 - 356, جامعة المسيلة - معهد علوم وتقنيات النشاطات البدنية والرياضية

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  • 2021-11-22
  • 2021-11-22

    الملتقي الوطني الأول تحت عنوان صعوبات استخدام منصة التعليم عن بعد في ظل جائخة كورونا

    الملتقي الوطني الأول عن بعد جودة التعليم العالي في ظل الجائحة الأثار والانعكاسات صعوبات استخدام منصة التعليم عن بعد في ظل جائخة كورونا

    Citation

    nouari karrouche , ADMIN Admin , ,(2021-11-22), الملتقي الوطني الأول تحت عنوان صعوبات استخدام منصة التعليم عن بعد في ظل جائخة كورونا,ملتقي وطني,البليدة

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  • 2021-10-27
  • 2021-10-27

    استخدامات ومشاكل التعامل مع منصة موودل لدى الطلبة الجامعيين * دراسة ميدانية *

    استخدامات - مشاكل -منصة موودل - الطلبة الجامعيين - دراسة ميدانية .

    Citation

    khadra CHETTOUH , ADMIN Admin , ,(2021-10-27), استخدامات ومشاكل التعامل مع منصة موودل لدى الطلبة الجامعيين * دراسة ميدانية *,تعليمية المقاييس الدراسية للغة العربية عبر منصة موودل,كلية الاداب و اللغات جامعة المسيلة

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  • 2021-06-18
  • 2021-06-18

    Croissance post-sevrage d’agneaux mâles Ouled Djellal conduits en élevage extensif en Algérie.

    Etude sur des élevages extensifs en Algérie d'ovins Ouled Djellal dans la région de (Sétif).

    Citation

    Hocine GUERMAH , ADMIN Admin , Hocine Guermah, , (2021-06-18), Croissance post-sevrage d’agneaux mâles Ouled Djellal conduits en élevage extensif en Algérie., Livestock Research for Rural Development., Vol:33, Issue:72, pages:6, Livestock Research for Rural Development 33 (6) 2021

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  • 2021-05-22
  • 2021-05-22

    مسارات تسوية النزاعات الحدودية في افريقيا

    مسارات تسوية النزاعات الحدودية في افريقيا اسباب النزاعات الحدودية في افريقيا وجهود حلها ، دور الاتحاد الافريقي والدبلوماسية الجزائرية

    Citation

    abdelkarim fenni , ADMIN Admin , ,(2021-05-22), مسارات تسوية النزاعات الحدودية في افريقيا,اسباب النزاعات الحدودية في افريقيا وجهود حلها ، دور الاتحاد الافريقي والدبلوماسية الجزائرية,جامعة الشهيد حمة لخضر الوادي

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  • 2021-04-29
  • 2021-04-29

    Safety assessement of Limoniastrum guyonianum aqueous leaves extract

    Safety assessement of Limoniastrum guyonianum aqueous leaves extract

    Citation

    ABDERRAHIM Benkhaled , ADMIN Admin , sarra chabane , ,(2021-04-29), Safety assessement of Limoniastrum guyonianum aqueous leaves extract,international selinar on biodiversity, valorization and conservation of urban and forest ecosystems: in support of sustainable development,M'sila

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  • 2021-04-28
  • 2021-04-28

    Variation de la phytodiversité en fonction de la géologie. Cas de la forêt périurbaine de Boumergued - Bordj-Bou-Arréridj

    La région méditerranéenne comporte des forêts variées des feuillues et des résineux ; les résineux jouent un rôle considérable et forment parfois des forêts importantes. Leurs valeurs écologiques et climatiques sont variables. En Algérie, pour restaurer les terrains forestiers dégradés et incendiés l’Etat Algérien, soucieux de la régression de la couverture végétale au lendemain de l'indépendance, a adopté des programmes de reboisement qui avaient plusieurs objectifs : lutte contre la désertification, fixation des sols, production de matière ligneuse... Le reboisement de Boumergued à Bordj-Bou-Arréridj illustre bien ce genre d’intervention. Notre travail porte sur la biodiversité floristique de ce massif périurbain où la méthodologie de travail adoptée consiste en un échantillonnage stratifié mené selon trois facteurs stationnels à savoir la géologie, l’exposition et la pente a aboutit à la réalisation de 36 relevés floristiques. L’analyse des résultats a révélé l’existence de 59 taxons comptant 46 genres et 16 familles botaniques où plus de 50% des espèces sont des thérophytes. Les facteurs stationnels ont présenté un déterminisme clair à la distribution des taxons recensés où la géologie a enregistré la plus forte présence de taxons. Les plantes inventoriées appartiennent en majorité à l’empire floral « Holarctis » renfermant 11 espèces médicinales et 06 espèces endémiques.

    Citation

    Djamel KHOUDOUR , ADMIN Admin , Abdelghani ZEDAM , ADMIN Admin , bensefiasofiane@gmail.com, ,(2021-04-28), Variation de la phytodiversité en fonction de la géologie. Cas de la forêt périurbaine de Boumergued - Bordj-Bou-Arréridj,International Seminar on Biodiversity, Valorization and Conservation of Urban and Forest Ecosystems: (In support of sustainable development),Université Mohamed Boudiaf M’Sila, Algérie.

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  • 2021-04-28
  • 2021-04-28

    Variation de la phytodiversité en fonction de la géologie. Cas de la forêt périurbaine de Boumergued - Bordj-Bou-Arréridj

    La région méditerranéenne comporte des forêts variées des feuillues et des résineux ; les résineux jouent un rôle considérable et forment parfois des forêts importantes. Leurs valeurs écologiques et climatiques sont variables. En Algérie, pour restaurer les terrains forestiers dégradés et incendiés l’Etat Algérien, soucieux de la régression de la couverture végétale au lendemain de l'indépendance, a adopté des programmes de reboisement qui avaient plusieurs objectifs : lutte contre la désertification, fixation des sols, production de matière ligneuse... Le reboisement de Boumergued à Bordj-Bou-Arréridj illustre bien ce genre d’intervention. Notre travail porte sur la biodiversité floristique de ce massif périurbain où la méthodologie de travail adoptée consiste en un échantillonnage stratifié mené selon trois facteurs stationnels à savoir la géologie, l’exposition et la pente a aboutit à la réalisation de 36 relevés floristiques. L’analyse des résultats a révélé l’existence de 59 taxons comptant 46 genres et 16 familles botaniques où plus de 50% des espèces sont des thérophytes. Les facteurs stationnels ont présenté un déterminisme clair à la distribution des taxons recensés où la géologie a enregistré la plus forte présence de taxons. Les plantes inventoriées appartiennent en majorité à l’empire floral « Holarctis » renfermant 11 espèces médicinales et 06 espèces endémiques.

    Citation

    Djamel KHOUDOUR , ADMIN Admin , Abdelghani ZEDAM , ADMIN Admin , bensefiasofiane@gmail.com, ,(2021-04-28), Variation de la phytodiversité en fonction de la géologie. Cas de la forêt périurbaine de Boumergued - Bordj-Bou-Arréridj,International Seminar on Biodiversity, Valorization and Conservation of Urban and Forest Ecosystems: (In support of sustainable development),Université Mohamed Boudiaf M’Sila, Algérie.

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  • 2021-04-28
  • 2021-04-28

    Inventaire de la faune culicidienne dans la région d’El Hamel (M’sila, Algérie)

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    Citation

    Saliha BENHISSEN , Abdelmadjid-Yagoub ASLOUM , ADMIN Admin , ADMIN Admin , ,(2021-04-28), Inventaire de la faune culicidienne dans la région d’El Hamel (M’sila, Algérie),International Seminar on Biodiversity, Valorization and Conservation of Urban and Forest Ecosystems: (In support of sustainable development),الجزائر

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  • 2021-04-28
  • 2021-04-28

    Inventaire de la faune culicidienne dans la région d’El Hamel (M’sila, Algérie)

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    Citation

    Saliha BENHISSEN , Abdelmadjid-Yagoub ASLOUM , ADMIN Admin , ADMIN Admin , ,(2021-04-28), Inventaire de la faune culicidienne dans la région d’El Hamel (M’sila, Algérie),International Seminar on Biodiversity, Valorization and Conservation of Urban and Forest Ecosystems: (In support of sustainable development),الجزائر

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  • 2021-03-28
  • 2021-03-28

    Biodiversité végétale de la pinède de Djebel Messaâd (Sud-Ouest de la wilaya de M'Sila - Algérie)

    La forêt de Djebel Messaâd est située à l'extrême Est des Monts Ouled Naïl dans l'Atlas Saharien d'Algérie (Wilaya de M'sila). Elle se localise à 3 km à l’Est de la ville de Djebel Messaâd, à 15 km au Sud de la ville de Bousaada et à 40 km au Sud-Ouest du lac salé et sec de Chott El Hodna. Cette forêt est soumise à un bioclimat méditerranéen semi-aride continental. Son substrat est principalement calcaire. Pour montrer l'impact des facteurs topographiques sur la diversité végétale et sa répartition spatiale, la méthodologie adoptée est un échantillonnage non probabiliste mixte (stratifié et subjectif), mené par trois facteurs topographiques: exposition, altitude et pente. La stratification a aboutit à 08 strates homogènes avec 03 répétitions ce qui a donné 24 placettes floristiques. L'analyse floristique a décelé que la zone d'étude comprend 97 taxons englobant 73 genres et appartenant à 27 familles botaniques. La diversité floristique est plus riche et plus diversifiée dans le versant Nord-Ouest et diminue avec l'augmentation de l'altitude et de la pente. Les facteurs topographiques ont une influence indirecte sur la végétation où ils exercent une influence modificatrice sur d'autres facteurs écologiques physiques qui ont une influence directe comme les éléments du climat, les paramètres du sol et la charge caillouteuse superficielle du sol. La richesse et la diversité stationnelle montrent les valeurs les plus élevées dans certaines variantes des facteurs topographiques étudiés comme: exposition Nord-Ouest, faible altitude et faible pente. En outre, les résultats de l'analyse statistique donnent l’avantage à l'exposition et la pente où la phytodiversité observée étant plus élevée. Ces résultats reflètent différentes conditions environnementales où la végétation semble mieux adaptée à cet environnement.

    Citation

    Abdelghani ZEDAM , ADMIN Admin , Djamel KHOUDOUR , ,(2021-03-28), Biodiversité végétale de la pinède de Djebel Messaâd (Sud-Ouest de la wilaya de M'Sila - Algérie),International Seminar on Biodiversity, Valorization and Conservation of Urban and Forest Ecosystems: (In support of sustainable development),Université de M’Sila, Algérie

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    • Default case...
  • 2021-02-09
  • 2021-02-09

    The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria

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    Citation

    Abdelmadjid-Yagoub ASLOUM , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ,(2021-02-09), The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria,Séminaire international sur la Biodiversité,Environnement et santé,الجزائر

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  • 2021-02-09
  • 2021-02-09

    The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria

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    Citation

    Abdelmadjid-Yagoub ASLOUM , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ,(2021-02-09), The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria,Séminaire international sur la Biodiversité,Environnement et santé,الجزائر

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  • 2021-02-09
  • 2021-02-09

    The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria

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    Citation

    Abdelmadjid-Yagoub ASLOUM , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ,(2021-02-09), The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria,Séminaire international sur la Biodiversité,Environnement et santé,الجزائر

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  • 2021-02-09
  • 2021-02-09

    The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria

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    Citation

    Abdelmadjid-Yagoub ASLOUM , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ,(2021-02-09), The status of the Biodiversity of mousquitoes larvae in the region of El Hamra Ouled Djellal Algeria,Séminaire international sur la Biodiversité,Environnement et santé,الجزائر

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  • 2021-02-01
  • 2021-02-01

    أبعاد التداخل بين علم الكلام وسائر العلوم عند أحمد بن محمد المقري التلمساني

    نجد من خلال الدراسة لتراث المغاربة تأليفا وكتابة وإبداعا أنهم تميزوا بمنهج يتسم بأن فيه من الإبداع والإضافة الشيء الكثير، وبخاصة شخصية أحمد بن محمد المقري التلمساني التي انتقيتها لأجعل منها منطلق دراسة للمؤتمر الموسوم بـ: "االأبنية الفكرية الجزائرية قراءة لما بين القرن 7هـ والقرن 14هـ،"، فنجد أنه ممن أسهم في إثراء علم الكلام وإغنائه وذلك عبر إخراجه من الإطار النظري التجريدي لتنزيله في الواقع وتحويله إلى أداة فعالة في إصلاح ديني واجتماعي، وكذا في تخصيب الفكر الإسلامي عموما، وبخاصة في نظمه العقدي"إضاءة الدجنة بعقائد أهل السنة"، و "إتحاف المغرم المغرى بتكميل شرح الصغرى"، ناهيك عن الإشراقات الكلامية والمقاصدية الفذة في كتبه التي خلصت للتأليف في السيرة والشمائل وكذا الفقه

    Citation

    khaled habassi , ADMIN Admin , ADMIN Admin , ,(2021-02-01), أبعاد التداخل بين علم الكلام وسائر العلوم عند أحمد بن محمد المقري التلمساني,الأبنية الفكرية الجزائرية قراءة لما بين القرن 7هـ والقرن 14ه,جامعة يحيى فارس المدية

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  • 2021-02-01
  • 2021-02-01

    أبعاد التداخل بين علم الكلام وسائر العلوم عند أحمد بن محمد المقري التلمساني

    نجد من خلال الدراسة لتراث المغاربة تأليفا وكتابة وإبداعا أنهم تميزوا بمنهج يتسم بأن فيه من الإبداع والإضافة الشيء الكثير، وبخاصة شخصية أحمد بن محمد المقري التلمساني التي انتقيتها لأجعل منها منطلق دراسة للمؤتمر الموسوم بـ: "االأبنية الفكرية الجزائرية قراءة لما بين القرن 7هـ والقرن 14هـ،"، فنجد أنه ممن أسهم في إثراء علم الكلام وإغنائه وذلك عبر إخراجه من الإطار النظري التجريدي لتنزيله في الواقع وتحويله إلى أداة فعالة في إصلاح ديني واجتماعي، وكذا في تخصيب الفكر الإسلامي عموما، وبخاصة في نظمه العقدي"إضاءة الدجنة بعقائد أهل السنة"، و "إتحاف المغرم المغرى بتكميل شرح الصغرى"، ناهيك عن الإشراقات الكلامية والمقاصدية الفذة في كتبه التي خلصت للتأليف في السيرة والشمائل وكذا الفقه

    Citation

    khaled habassi , ADMIN Admin , ADMIN Admin , ,(2021-02-01), أبعاد التداخل بين علم الكلام وسائر العلوم عند أحمد بن محمد المقري التلمساني,الأبنية الفكرية الجزائرية قراءة لما بين القرن 7هـ والقرن 14ه,جامعة يحيى فارس المدية

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  • 2021-01-01
  • 2021-01-01

    Seismic stability analysis of a pre-cracked natural slope: a case study of Aomar slope in Algeria

    This paper presents and analyses the results of a series of seismic stability calculations performed on a pre-cracked natural slope located at Aomar city in Bouira Province, Algeria, whose collapse caused significant damages to the slope and surrounding structures. Among the calculation methods used to determine the potential slip surface of the slope (limit equilibrium method, yield design theory, plasticity calculation and limit analysis theory), the limit equilibrium method and the yield design theory seem best suited for this type of problem. The instability causes of the slope can be multiple and the cracks present upstream of it have probably been the catalyst. In addition to the probable seismic action, the potential instability factors of the slope considered in this study are the shear strength loss of the soil mass, the pore water pressure generated by the water table fluctuations, a possible excessive overloading upstream and an eventual unloading downstream. Stability calculations performed on assumed uncracked and cracked slope confirm the overall collapse mode observed in the field. They also show that it is a slight seismic action combined with some of these negative factors that caused the collapse of the slope.

    Citation

    Mohammed KHEMISSA , ADMIN Admin , Ahmed SEDDIKI , , (2021-01-01), Seismic stability analysis of a pre-cracked natural slope: a case study of Aomar slope in Algeria, Geomechanics and Geoengineering, Vol:16, Issue:1, pages:52-66, Taylor and Francis

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  • 2021
  • 2021

    Antifungal and antioxidant activities of Artemisia campestris.

    no abstract

    Citation

    NOUI Hendel , Djamel SARRI , MADANI Sarri , ADMIN Admin , BOUSSKRA F., DRICHE O, ,(2021), Antifungal and antioxidant activities of Artemisia campestris.,. Séminaire national “webinaire” bio-ressources : Nutrition, Santé et environnement, 17-18 mai 2021.,Msila Algérie

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  • 2021
  • 2021

    الدور السوسيوتربوي لمؤسسات التنشئة الاجتماعية في الحد من ظاهرة التنمر الرياضي

    https://www.asjp.cerist.dz/en/article/169890

    Citation

    Yasmina Ketfi , ADMIN Admin , بلقبي فطوم, , (2021), الدور السوسيوتربوي لمؤسسات التنشئة الاجتماعية في الحد من ظاهرة التنمر الرياضي, مجلة الابداع الرياضي جامعة المسيلة, Vol:-2, Issue:4, pages:20, جامعة مسيلة

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  • 2021
  • 2021

    القلق لدى المراهق المدمن على المخدرات في ضوء بعض المتغيرات

    القلق المراهق المدمن المخدرات المتغيرات الشخصية

    Citation

    Souhila Boudjellal , ADMIN Admin , بن عمور جميلة, , (2021), القلق لدى المراهق المدمن على المخدرات في ضوء بعض المتغيرات, مجلة الراصد لدراسات العلوم الاجتماعية, Vol:1, Issue:2, pages:22-36, جامعة المسيلة

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  • 2021
  • 2021

    كتاب جماعي حول :بيداغوجيا التعلم المقلوب و تجويد مخرجات التعليم الجامعي

    البيداغوجيا التعلم المقلوب مخرجات التعليم الجامعي

    Citation

    SouhilaBoudjellal , ADMINAdmin , يوسفي دلال, ,(2021); كتاب جماعي حول :بيداغوجيا التعلم المقلوب و تجويد مخرجات التعليم الجامعي,,مركز اليقظة البيداغوجية بجامعة المسيلة

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  • 2021
  • 2021

    اتجاهات طلبة الجامعة نحو استخدام التقويم الإلكتروني في ظل جائحة كورونا

    الاتجاه التعليم الإلكتروني التقويم الالكتروني جائحة كورونا طلبة الجامعة

    Citation

    Souhila Boudjellal , ADMIN Admin , NAOUAL Boudiaf , , (2021), اتجاهات طلبة الجامعة نحو استخدام التقويم الإلكتروني في ظل جائحة كورونا, مجلة سلوك, Vol:7, Issue:1, pages:73-91, جامعة مستغانم

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  • 2021
  • 2021

    من منظمة متوجهة بالتسويق الأخضر إلى منظمة مُمارِسة للغسيل الأخضر: آلية التحول وإستراتيجية المواجهة

    الغسيل الأخضر والتسويق الأخضر وجهان لعملة واحدة، وبقدر ما يمكن لتخضير التسويق أن يؤدي الى تميز تنافسي مهم، بقدر ما بإمكانه أن يكون ملوثا لسمعة المنظمة ومهددا لنجاحها على المدى البعيد، من هذا المنطلق هدفت هذه الدراسة الى تسليط الضوء على مفاهيم التسويق الأخضر والغسيل الأخضر، وتحديد الدور المفصلي الذي تلعبه الاتصالات التسويقية الخضراء في كلا المدخلين، مع البحث في استراتيجة مواجهة ظاهرة الغسيل الأخضر . وقد توصلنا الى أن الغسيل الأخضر يكون بإظهار السلوك الودود بيئيا في حملات التسويق، مع غياب هذا السلوك في الممارسات الفعلية، وأن الاتصالات التسويقية اللاأخلاقية تلعب الدور الأساسي في هذه الظاهرة، وللحد منها وجب على منظمات الأعمال التحلي بأخلقة حملاتها التسويقية ، وأن لا تلتزم بتقديم وعود لا يمكنها الوفاء بها، أو أن تقوم برفع مستوى أدائها البيئي الى مستوى ما تم الإعلان عنه في تلك الحملات . الكلمات المفتاح : تخضير الأعمال، تسويق أخضر، اتصال تسويقي أخضر، غسيل أخضر.

    Citation

    Sana RAHMANI , ADMIN Admin , ,(2021), من منظمة متوجهة بالتسويق الأخضر إلى منظمة مُمارِسة للغسيل الأخضر: آلية التحول وإستراتيجية المواجهة,الاقتصاد الأخضر: وجهة المؤسسات نحو تطبيق ممارسات تسويقية حديثة لإرساء مبادئ ومتطلبات التنمية المستدامة,جامعة برج بوعريريج

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  • 2021
  • 2021

    Effect of ceramic and marble waste on the physico- Mechanical properties of mortar

    Waste recycling has now become the right solution that can offer new renewable and sustainable resources that contribute in the process of construction in the field of civil engineering and thus to protect the environment. Ceramic waste and marble powder constitute an interesting alternative in this case since this waste is available and is abandoned at the construction sites. To achieve these objectives, we are trying through this experimental work to valorize marble powder and ceramic powder as an addition in building materials with a cement matrix. The main goal of this study is to highlight the possibility of recycling and The incorporation together of the marble and ceramic waste is carried out by the substitution of cement by contents of 0% 5%, 10%, and 15 % and using them as an additive in the mortar. The experimental procedure set up aims to determine the physico-mechanical characteristics of the mortars made from marble powder and ceramic powder and to compare them with those of the control mortar without fillers in order to express the profitability of this type of waste. The characteristics to be studied are: density in the fresh state and in the hardened state, sagging, the ultrasonic propagation speed and the compressive and tensile strength at the age of 7, 14, 28 and 90 days, porosity, capillary absorption, leading to the production of local mortar materials characterized by good strength, good porosity and minimum acceptable durability.

    Citation

    ZINE EL ABIDINE Rahmouni , ADMIN Admin , ,(2021), Effect of ceramic and marble waste on the physico- Mechanical properties of mortar,6th International Conference on Advances in Mechanical Engineering, ICAME 2021,Istanbul, Turkey

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  • 2021
  • 2021

    Étude numérique et expérimentale de l'usinage des bio composites

    L’objectif visé par ce travail est à deux volets, d’abord nous donnons les étapes nécessaire pour rédiger un article scientifique a savoir : un article de recherche complet ou article original, court article, un projet de recherche et un article revue. Le contenu de cet article s'adressera aux chercheurs des études supérieures, qu'ils soient étudiants à la maîtrise ou au doctorat, pour aider à publier leurs recherches de manière efficace et facile. Ensuite, nous focalisant sur un type bien précis qui est l’article revue (Review article).Cette revue traite de manière générale les différentes opérations d'usinage, plus précisément, le processus de forage (perçage) associées aux composites renforcés par des fibres naturelles a partir de la revue de 3 articles choisis et qui ont été publié dans des revues scientifique de renommée internationale.

    Citation

    Riyadh benyettou , ADMIN Admin , ,(2021), Étude numérique et expérimentale de l'usinage des bio composites,أسس و مناهج البحث العلمي,M'Sila

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  • 2021
  • 2021

    معايير شرعية التدخل العسكري الانساني(ليبيا انموذجا)

    تهدف الدراسة إلى تقدير مدى إلتزام المجتمع الدولي بمعايير التدخل العسكري الإنساني، بما يحقق إستقرار وأمن الدول المتدخل فيها، مع الحرص على ضمان عدم توسع النزاعات إلى الدول المجاورة لها. وصولا إلى قناعات مفادها بأن التدخلات العسكرية والتي تشكل إستثناء، قد تحولت إلى أصل، كما أن الحلول العسكرية لم تسهم في حل النزاعات الدولية، بل زادت من حدة معاناة الشعوب مثلما هو عليه الحال في ليبيا، الأمر الذي يستوجب ضرورة التقيد الصارم باحترام قواعد القانون الدولي الرامية إلى تشجيع فض النزاعات بالطرق السلمية، والعمل على تحقيق التنمية المستدامة داخل هذه المجتمعات المتناحرة، وإشاعة فرص السلام واحترام حقوق الإنسان.

    Citation

    Said Herzi , ADMIN Admin , ,(2021), معايير شرعية التدخل العسكري الانساني(ليبيا انموذجا),التدخل العسكري الانساني اثناء النزاعات المسلحة: نحو بناء مقاربة جزائرية جديدة,جامعة محمد خيضر ببسكرة

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  • 2021
  • 2021

    الثنائيات الضدية في شعر السياب

    الثنائيات الضدية آلية شعرية هامة تتجلى من خلالها رؤى الشاعر الفلسفية والإبداعية، وتكشف للمتلقي آفاقا متعددة في النص الشعري، وبذلك يتحقق الاختلاف وتباين الرؤى بين القراء في النص الواحد، ويزخر شعر السياب بالثنائيات الضدية التي جسدت أبعاده الشعرية ونظراته الفلسفية والفنية، ويتناول هذا البحث بعض النماذج من تلك الثنائيات بالدراسة والتأويل في شعر بدر شاكر السياب. ولا شك أن تتيع ما ترمي إليه تلك الثنائيات يمكن المتلقي من اكتشاف أسرار وأبعاد شعرية مكثفة تنم عن تجربة شعرية ترتكز على فلسفة عميقة وفهم حقيقي للحياة والوجود ووعي تام بالواقع. الكلمات المفتاحية: الحضور والغياب، الموت والحياة، الحركة والسكون، الجدب والخصب، الحلم والواقع.

    Citation

    MOHAMED Saadoun , ADMIN Admin , , (2021), الثنائيات الضدية في شعر السياب, مجلة علوم اللغة العربية وآدابها, Vol:13, Issue:1, pages:1847-1867, مجلة علوم اللغة العربية وآدابها

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  • 2021
  • 2021

    العقل العربي وابستيمية الموروث والواقع

    يعتبر العقل العربي من الجدليات الإبستيمولوجية حول تكوينه وفاعليته ، وبين ما هو فكر ومنتج في البنية السوسيوثقافية للمجتمع حيث يعتبر العقل هو الآلية الإنسانية التي تحمل الموروث الثقافي وتورثه من جيل الى جيل عبر المنتج الفكري والمعرفي الذي يعكس خصوصية ثقافة مجتمع ما . وتهدف هذه الورقة إلى فهم وتفكيك بنية العقل العربي عبر ربط المنطلقات الفلسفية والسوسيولوجية مع الواقع المعاش ، وتحليل كيفية ارتباط العقل بالبنية الثقافية كموروث حضاري يتكون داخلها الأفراد بما يتناسب مع ما هو موجود وما ينبغي على هذا العقل من تطور فكري يحمل الموروث ويواكب العصر الحديث

    Citation

    Djamel Tali , ADMIN Admin , ADMIN Admin , ,(2021), العقل العربي وابستيمية الموروث والواقع,الملتقى الدولي حول بنية المجتمع والعقل العربي بين الموروث والحداثة,جامعة زيان عاشور الجلفة

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  • 2021
  • 2021

    العقل العربي وابستيمية الموروث والواقع

    يعتبر العقل العربي من الجدليات الإبستيمولوجية حول تكوينه وفاعليته ، وبين ما هو فكر ومنتج في البنية السوسيوثقافية للمجتمع حيث يعتبر العقل هو الآلية الإنسانية التي تحمل الموروث الثقافي وتورثه من جيل الى جيل عبر المنتج الفكري والمعرفي الذي يعكس خصوصية ثقافة مجتمع ما . وتهدف هذه الورقة إلى فهم وتفكيك بنية العقل العربي عبر ربط المنطلقات الفلسفية والسوسيولوجية مع الواقع المعاش ، وتحليل كيفية ارتباط العقل بالبنية الثقافية كموروث حضاري يتكون داخلها الأفراد بما يتناسب مع ما هو موجود وما ينبغي على هذا العقل من تطور فكري يحمل الموروث ويواكب العصر الحديث

    Citation

    Djamel Tali , ADMIN Admin , ADMIN Admin , ,(2021), العقل العربي وابستيمية الموروث والواقع,الملتقى الدولي حول بنية المجتمع والعقل العربي بين الموروث والحداثة,جامعة زيان عاشور الجلفة

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  • 2021
  • 2021

    Atlas cedar in Djurdjura National Park and Biosphere Reserve – current distribution and predicted changes in the range

    Atlas cedar in Djurdjura National Park and Biosphere Reserve – current distribution and predicted changes in the range

    Citation

    Yassine NOUIDJEM , Abdelkrim ARAR , ADMIN Admin , , (2021), Atlas cedar in Djurdjura National Park and Biosphere Reserve – current distribution and predicted changes in the range, ROLA I FUNKCJONOWANIE PARKÓW KRAJOBRAZOWYCH W REZERWATACH BIOSFERY, Vol:1, Issue:1, pages:445-450, the Nicolaus Copernicus University in Toruń

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  • 2021
  • 2021

    برامج المراكز النفسية البيداغوجية ودورها في تنمية بعض المهارات الحياتية للمعاقين ذهنيا القابلين للتعلم " دراسة ميدانية ببعض ولايات الشرق الجزائري

    هدفت هذه الدراسة إلى الكشف عن دور البرامج المطبقة على مستوى المراكز النفسية البيداغوجية في تنمية بعض المهارات الحياتية للمعاقين ذهنيا القابلين للتعلم من وجهة نظر المربين، وكذا الكشف عن الفروق في وجهات نظر المربين حول هذا الدور تبعا لمتغيرات (الجنس، الأقدمية، مكان العمل). لأجل ذلك تمّ إعداد استبيان لتقدير المهارات الحياتية للمعاقين ذهنيا القابلين للتعلم يضم 57 بندا موزعة على أربعة أبعاد هي: الاستقلالية، الاتصال والتواصل، المهارات الاجتماعية والعمل الجماعي وأخيرا الضبط والمرونة. بعد حساب الخصائص السيكومترية لهذا الاستبيان، تم تطبيقه على عينة قوامها 68 مربي موزّعين على عدد من المراكز المتواجدة عبر أربع ولايات من الشرق الجزائري. استخدمت الدراسة الحالية المنهج الوصفي والمتوسطات الحسابية والانحرافات المعيارية وتحليل التباين الأحادي وكذا اختبار "ت" في المعالجة الإحصائية. أظهرت نتائج الدراسة أن دور البرامج المطبقة على مستوى مختلف المراكز كان متوسطا بالنسبة للدرجة الكلية للاستبيان وأغلب محاوره، وأنّ ترتيب المهارات الحياتية حسب أهميتها كان على النحو التالي: المهارات الاجتماعية والعمل الجماعي، تليها مهارة الاستقلالية، ثمّ الاتصال والتواصل، وأخيرا مهارة الضبط والمرونة. أما فيما يخص الفروق فقد بيّنت الدراسة عدم وجود فروق ذات دلالة إحصائية في دور البرامج تبعا لمتغير (الجنس، والأقدمية)، في حين أظهرت الدراسة وجود فروق ذات دلالة إحصائية في دور البرامج تبعا لمتغير مكان عمل المربي. Cette étude visait à déterminer le rôle des programmes appliqués au niveau des centres Psychopédagogiques dans le développement de certaines compétences de vie pour les handicapés mentaux apprenants du point de vue des éducateurs, et à illustrer les différences dans les points de vue des éducateurs sur ce rôle en fonction des variables (sexe, ancienneté, lieu de travail). Pour cela, un questionnaire a été préparé pour estimer les compétences de vie des handicapés mentaux apprenants, comprenant 57 éléments répartis en quatre dimensions: indépendance, intercommunication, compétences sociales et travail d'équipe et maîtrise et flexibilité. Après avoir calculé les propriétés psychométriques, ce questionnaire a été appliqué sur 68 éducateurs répartis dans quatre wilayas de l'est de l'Algérie. L’étude a utilisé la méthode descriptive, les moyennes mathématiques, les écarts-types et l'analyse de mono-variance et le test «T» dans le traitement statistique. Les résultats ont montré que le rôle de ces programmes était moyen par rapport au degré global du questionnaire et à tous ses axes, et que la classification des compétences selon leur importance était comme suit : compétences sociales et travail d'équipe, suivies des compétences d'indépendance, puis les compétences d’intercommunication, et enfin les compétences de maîtrise et de flexibilité. L'étude a montré aussi, qu'il n'y avait pas de différences statistiquement significatives dans le rôle des programmes selon (le sexe et l’ancienneté), or qu'il y avait des différences statistiquement significatives dans le rôle des programmes selon (le lieu de travail). This study aimed to illustrate the role of programs applied in the Psycho-pedagogical Centers for the development of some life skills for learnable mentally handicapped from the point of view of educators. Also, this study aims to reveal the existence of the differences in the points of view of the educators on this role due to the variables of the study; sex, seniority, workplace. To this end, a questionnaire has been prepared to assess the life skills of the learnable mentally handicapped including 57 items divided into four dimensions ; Independence, Communication, social skills and teamwork and finally control and flexibility. After calculating the psychometric characteristics of this questionnaire, it has been applied to a sample of 68 educators distributed in a number of centers located in four Wilayas from the East of Algeria. In this study, we have used the descriptive methodology, along with the arithmetic mean, standard deviations, analysis of mono-variance, and T test as statistical treatment. The results showed that the role of the programs applied at the different centers was average for the total score of the questionnaire and most of its dimensions and that the ranking of life skills, according to their importance in the lives of the learnable mentally handicapped, was as follows: Social skills and teamwork followed by the skill of independence, then communication, and finally the skill of control and flexibility. Whereas for the differences, the study showed that there were no statistically significant differences in the role of programs attributed to the two variables (gender and seniority), while it showed that there are statistically significant differences in the role of programs due to the variable of the workplace..

    Citation

    Ammour amar , ADMIN Admin , , (2021), برامج المراكز النفسية البيداغوجية ودورها في تنمية بعض المهارات الحياتية للمعاقين ذهنيا القابلين للتعلم " دراسة ميدانية ببعض ولايات الشرق الجزائري, مجلة الجامع للدراسات النفسية والبحوث التربوية, Vol:6, Issue:1, pages:715-746, مخبر المهارات الحياتية . جامعة محمد بوضياف/المسيلة. الجزائر

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  • 2021
  • 2021

    الخطاب الاستشراقي (الفاعيلية والتأثير ) - مدرسة الاستشراق الفرنسي انموذجا

    الخطاب الاستشراقي (الفاعيلية والتأثير ) - مدرسة الاستشراق الفرنسي انموذجا

    Citation

    ZEKRIBAHOUS , ADMINAdmin , ,(2021); الخطاب الاستشراقي (الفاعيلية والتأثير ) - مدرسة الاستشراق الفرنسي انموذجا,,منشورات مخبر الشعرية الجزائرية // البدر الساطع للطباعة والنشر العلمة 19600 -الجزائر

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  • 2021
  • 2021

    Evolutionary history of the two North African hedgehogs (Mammalia: Erinaceidae) Atelerix algirus and Paraechinus aethiopicus based on phylogeography and species distribution modelling

    Two species of hedgehogs are known to occur in northern part of Africa: the Algerian hedgehog Atelerix algirus and the Ethiopian hedgehog Paraechinus aethiopicus. Within each species several subspecies were described based on morphometrical data and pelage coloration, but all these subspecies have enigmatic and unclear definitions. We investigated the phylogeographical history and taxonomy of these two species based on mitochondrial DNA data covering the entire geographical distribution of A. algirus and the North African distribution of P. aethiopicus. We also used climatic niche modelling to make inferences about their evolutionary history. Low genetic diversity was recovered in both species. While no phylogeographic pattern was found in P. aethiopicus, two haplogroups were identified within A. algirus. This could be explained by the fact that continuous high or moderate climatic suitability occurred throughout most of the Saharan desert since the LGM (Last Glacial Maximum) for the first species, while during the LGM there were several disconnected areas of high climatic suitability for A. algirus: one in South-West Morocco, one at the coastal Moroccan-Algerian border and one in Tunisia-coastal Libya. Our genetic results confirm that A. algirus recently colonized Spain, Balearic and Canary Islands, and that this colonization was probably mediated by humans. Suitable climatic conditions occurred throughout most of the Southern and Eastern Iberian Peninsula during the last 6,000 years which could have favored the spatial expansion of the Algerian hedgehog after its arrival in Europe. According to our molecular results subspecific recognition within North Africa is unwarranted for both species. Key words : Climatic niche modelling; haplotype network; mammal; mitochondrial DNA; North Africa; phylogeny; taxonomy

    Citation

    Mourad KHALDI , ADMIN Admin , , (2021), Evolutionary history of the two North African hedgehogs (Mammalia: Erinaceidae) Atelerix algirus and Paraechinus aethiopicus based on phylogeography and species distribution modelling, Vertebrate Zoology, Vol:71, Issue:1, pages:799-811, Senckenberg Natural History Collections

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  • 2021
  • 2021

    Impact Assessment Of The Convergence Of Ifrs And Us. Gaap On The Quality Of Financial Reporting- A Comparative Study

    The objective of this research is to examine and evaluate the results of Convergence project that began in 2002 to remove the differences between the International Financial Reporting Standards (IFRS) and United States Generally Accepted Accounting Principles (US. GAAP). Our paper is considered a comparative analytical study, and it is motivated by the ongoing harmonization process in accounting standard setting and recent convergence projects by the FASB and the IASB. First, we give an overview about the progress of the convergence, and then we study the most important results reached during this project. Finally, the difficulties and the most important criticisms will be discussed. The paper concluded that the convergence between IFRS and US. GAAP is one of the most efficient methods adopted to achieve the goal of high-quality international accounting standards but it is a short-term solution and there are more effective ways that must be found to achieve the stated goal. Keywords convergence ; IFRS ; US.GAAP ; Accounting ; Financial reporting

    Citation

    Said GASMI , ADMIN Admin , , (2021), Impact Assessment Of The Convergence Of Ifrs And Us. Gaap On The Quality Of Financial Reporting- A Comparative Study, Journal Of Research in Finance and Accounting, Vol:6, Issue:1, pages:654-672, كلية العلوم الاقتصادية والعلوم التجارية وعلوم التسيير جامعة المسيلة

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  • 2021
  • 2021

    The Optical Formation in architectural Design as a features of Urban Identity

    Our towns are a real reflection of our future civilizations, our heritage, and our ambitions. In addition to aesthetics, the presence of essential components enhances the effectiveness surrounding atmosphere, and this quality affects the human mind and impacts citizens' sense of place and collective memories. Urban planners should enable utilization urban features that facilitate the transition of urban identity to the city, contributing to satisfy people and enhance the quality of the urban climate. In promoting city identity and inspiring people, urban components play an important role and should be planned in such a way that their readability is in line with citizens‟ activities and events. Architecture was and still is the primary facade of nations' society, economies and civilization, and we are an integral part of architecture at the time of the tremendous growth of science and technology. It represents, in a competitive fashion, what countries have come to evolve in culture, society and technology, and since architecture has been one of the most significant criteria in the assessment of countries' growth and development. The findings suggest high levels of variance in terms of imagery features and how people view the urban design. The study claims that the findings are based on concepts for the design of an imaginable city and on criteria for emphasizing and cultivating urban identification.

    Citation

    Hynda BOUTABBA , ADMIN Admin , Wafa AHRAOU , , (2021), The Optical Formation in architectural Design as a features of Urban Identity, Journal of Xi'an University of Architecture & Technology, Vol:13, Issue:4, pages:89-99, Science press

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  • 2021
  • 2021

    ENDEMIC TAXA AND THEIR VULNERABILITY STATUS IN NORTH - EASTERN ALGERIA: CONSERVATION AND PROTECTION

    Abstract: Our study aims to develop the first list of taxa endemic to the Sétif region. In this research, we mainly relied on floristic work carried out on a North-South transect covering two types of bioclimate and including forest and steppe massifs. Thus, we have counted 148 endemic taxa including 25 subspecies. Belonging to 33 botanical families and dominated by Asteraceae with 15.54%. The endemics of North Africa are the most representative with 62 taxa. The region of Sétif is very impacted; its plant cover is subject to climatic and anthropogenic constraints, which would certainly contribute to more scarcity or even to the gradual disappearance of endemic and rare species very soon. Keywords: Endemic taxa, Degradation, Rarefaction, Preservation, Sétif

    Citation

    Rabah BOUNAR , ADMIN Admin , , (2021), ENDEMIC TAXA AND THEIR VULNERABILITY STATUS IN NORTH - EASTERN ALGERIA: CONSERVATION AND PROTECTION, JEAT, Vol:17, Issue:1, pages:9, Journal of EcoAgriTourism

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  • 2020-10-13
  • 2020-10-13

    الاثنوغرافيا منهج حديث في الفضاء الاتصالي الجديد

    الملخص: إن ظهور التكنولوجيا والعالم الافتراضي والتطورات المختلفة التي طرأت على مجال الإعلام والاتصالات أفرز العديد من الإشكالات المتعلقة بنوعية البحوث الاتصالية خاصة على المستوى المنهجي، ونظرا للعجز الذي سجلته المقاربات الكمية في إعطائها الفهم الدقيق للظواهر الاتصالية والإعلامية، فهناك من الباحثين من رأى قصورا واضحا في هذه البحوث لاستبعادها للمناهج والأدوات البحثية المستحدثة والتي قد تكون ذات نجاعة في التناول العلمي والموضوعي للظواهر الاتصالية الجديدة، وهناك من رأى ضرورة استحداث منظومة منهجية جديدة تمكننا من تناول البيئة الاتصالية الجديدة المقابلة للبيئة الواقعية حيث تقوم على دراسة مختلف السلوكيات الاتصالية والتفاعلات الاجتماعية ومختلف الثقافات المتداولة داخل هذا الفضاء الاتصالي الجديد. وفي سياق تجديد المناهج لتتماشى مع التغيرات والتطورات السريعة التي طرأت على الظاهرة الاتصالية هدف هذا المقال تقديم الاثنوغرافيا كمنهج حديث قادر على معالجة مشكلات الواقع الإعلامي الاتصالي وتبيان أهميته في دراسة ومعالجة الفضاء الاتصالي الجديد خاصة تلك التي لا يمكن مقاربتها كميا. الكلمات المفتاحية: البحث الكيفي، المنهج الاثنوغرافي، الفضاء الاتصالي الجديد

    Citation

    FATTOUM BELKOBBI , baya sifoune , ADMIN Admin , , (2020-10-13), الاثنوغرافيا منهج حديث في الفضاء الاتصالي الجديد, مجلة الخلدونية, Vol:13, Issue:1, pages:39 -52, مجلة الخلدونية للعلوم الانسانية والاجتماعية -جامعة ابن خلدون تيارت الجزائر

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  • 2020
  • 2020

    طقوس الشعرية في نصوص بدر شاكر السياب

    برزت قصائد السياب الأولى من شعره في شفوف الرومانسية ولم يتجاوز بتلك الشعرية حدود المعتاد إلى أن أحدث انقلابا جذريا في مسار الشعر العربي، فاصطنع طقوسا جديدة للشعرية العربية، وفتح للشعر فضاءات أخرى، صادمة ومثيرة للدهشة، معتمدا في ذلك على لغة انزياحية وأشكال مختلفة للنص وصور مكثفة وتعابير حرة. وحملت تلك الأشكال والقصائد طقوسا أخرى للشعرية وترصدت كوكبة من الشعراء قصائد السياب الجديدة التي يخرجها لكي تقلدها وتحذو حذوها، أما الإشكالية التي يطرحها الموضوع فهي: من أين استقى السياب طقوس الشعرية في نصوصه؟ ومن هم النقاد المعاصرين الذين أخذ عنهم عناصر الشعرية؟ وهل استطاع أن يحقق في شعره ملامح الشعرية المعاصرة؟ أما الهدف الأساس الذي يرمي إليه الشاعر في اتباع أساليب الشعرية الحداثية هو تغيير النمطية التقليدية في الشعر العربي. الكلمات المفتاحية: تكرار؛ تناص؛ انزياح؛ عناصر.

    Citation

    MOHAMED Saadoun , ADMIN Admin , , (2020), طقوس الشعرية في نصوص بدر شاكر السياب, مجلة إشكالات في اللغة والأدب, Vol:9, Issue:3, pages:388-406, مجلة إشكالات في اللغة والأدب

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  • 2020
  • 2020

    العلاقة الارتباطية بين صفتي القوة والسرعة و دافعية الانجاز الرياضيلدى لاعبي كرة القدم

    هدفت المداخلة الكشف عن العلاقة الارتباطية بين صفتي القوة والسرعة ودافعية الانجاز الرياضي لدى لاعبي كرة القدم حيث اعتمدنا في هذه الدراسة على المنهج الوصفي التحليلي الارتباطي على عينة قوامها 20 لاعب مستعملين مقياسي الحالة البدنية و دافعية الانجاز كاداة للدراسة وتوصلت اهم النتائج الى وجود علاقة ذات دلالة احصائية بين صفتي القوة والسرعة و دافعية الانجاز

    Citation

    HAMZA Charif , MEFTAH Medjadi , ADMIN Admin , ,(2020), العلاقة الارتباطية بين صفتي القوة والسرعة و دافعية الانجاز الرياضيلدى لاعبي كرة القدم,الاستراتيجيات الحديثة في التدريب الرياضي للمستوى العالي,جامعة محمد بوضياف المسيلة

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  • 2020
  • 2020

    Analysis of non-coherent CFAR detectors in sea-clutter: A comparison

    In radar systems, detection performance is always related to target and clutter models. The probability of detection is shown to be sensitive to the degree of estimation accuracy of clutter levels. In this work, the performances of logt-CFAR, zlog(z)-CFAR and Bayesian-CFAR detectors are investigated using both simulated and real data. The clutter is assumed to be log-normal, Weibull or Pareto type II distributed. The dependence of the false alarm probability is presented. From simulated data, CFAR detectors provide fully CFAR decision rules. From IPIX real data with different range resolutions, it is shown that the Bayesian-CFAR algorithm exhibits a small deviation of the false alarm probability.

    Citation

    AMAR Mezache , ADMIN Admin , ,(2020), Analysis of non-coherent CFAR detectors in sea-clutter: A comparison,6th IEEE Congress on Information Science and Technology (CiSt),Agadir - Essaouira, Morocco

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  • 2020
  • 2020

    واقع تمويل قطاع الفلاحة في الجزائر وإمكانية إنعاشه من خلال صيغ المشاركات الزراعية للتمويل المصرفي الإسلامي

    عملت الجزائر عبر العديدد ندا اططاادال الويم يدس اطفدوتدوس اد ير القادا اللاحيدك طقادا اتدجا ك، اناحقدا ندا لاع دو الوم يدو اللاحيك المحلك، صلت الد اتس بأن ص غس اطشا طس ط زة الوم يو الإتحنك أتاته ي ث عمو على زيع اططاطر إعااء طلااءة أطثر للعمل س الوم يل س. أ صت الد اتس على ضر ة الاهومام أطثر بق اعد الوم يو الإتحنك عبر الص غ اططوللاس التي ياريتا

    Citation

    Laid FERAHTIA , ADMIN Admin , فضيلة بوطورة fadila.boutora@univ-tebessa.dz, نوفل سمايليnawfel smaili@univ-tebessa.dz, , (2020), واقع تمويل قطاع الفلاحة في الجزائر وإمكانية إنعاشه من خلال صيغ المشاركات الزراعية للتمويل المصرفي الإسلامي, مجلة العلوم الاقتصادية والتسيير والعلوم التجارية –, Vol:13, Issue:1, pages:834-852, جامعة محمد بوضياف المسيلة

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  • 2020
  • 2020

    التصوف في الشعر الشعبي لمنطقة أولاد نايل عبد الرحمان الطاهيري أنموذجا

    إنّ محاولتنا لدراسة تاريخ الشيخ عبد الرحمان بن الطاهر بصفته شاعرا وأديبا وعالما ومقاوما، تستلزم منا تقديم تمهيدات تصلح أن تكون مفاتيح لهذه الدراسة. ليقف القارئ الكريم على حقيقة هذه الشخصية فيسهل عليه التصنيف، لذلك ارتأينا أن نقدم تعاريف للتصوف بصفة عامة، وللطريقة الرحمانية بصفة خاصة، وكذلك رواد الطريقة الرحمانية في الجلفة، بالإضافة إلى الشعر الملحون عند الشيخ عبد الرحمان، مع ذكر أوضاع المجتمع الجزائري إبان الاستدمار الفرنسي. ومن هذا المنطلق نطرح التساؤل الآتي: كيف استطاع النص الشعري الصوفي أن يجمع بين جمالية اللغة وتمظهرات الفكر الصوفي؟وهل تجلى ذلك في شعر عبد الرحمان الطاهيري؟

    Citation

    nasser mohammed elhassani TIS , ADMIN Admin , ,(2020), التصوف في الشعر الشعبي لمنطقة أولاد نايل عبد الرحمان الطاهيري أنموذجا,آليات الإبداع والتجديد في الشعر الشعبي,جامعة محمد بوضياف بالمسيلة

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  • 2019-02-11
  • 2019-02-11

    الشراكة بين القطاعين الخاص والعام كآلية لتفعيل السياسة الجبائية في الجزائر

    هدفت المداخلة إلى توضيح مدى أهمية الشراكة بين القطاعين الخاص والعام لتفعيل السياسة الجبائية في الجزائر

    Citation

    Mabrouka HADJAR , ADMIN Admin , ,(2019-02-11), الشراكة بين القطاعين الخاص والعام كآلية لتفعيل السياسة الجبائية في الجزائر,النظام المالي وإشكالية تمويل الاقتصاديات النامية,جامعة محمد بوضياف- المسيلة

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  • 2019
  • 2019

    a c Consultant

    Eveniet voluptatibus est optio quae sunt. Earum fugit minus odio. Cum et commodi omnis non autem sit.

    Citation

    ADMIN Admin , Ahmed mir, , (2019), a c Consultant, Msila University, Vol:22, Issue:13, pages:135-29, springer

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  • 2019
  • 2019

    كتاب جماعي حول اعمال ملتقى الدولي لحادي عشر للعلوم الاجتماعية والبحوث المعاصرة

    دور الجلد في تقبل وإدماج الأسرة لإعاقة التوحد

    Citation

    NAOUALBoudiaf , YAMENAIsmaili , ADMINAdmin , ,(2019); كتاب جماعي حول اعمال ملتقى الدولي لحادي عشر للعلوم الاجتماعية والبحوث المعاصرة,,دار سايبيلدر

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  • 2019
  • 2019

    كتاب جماعي حول أعمال الملتقى الوطني حول "التعليم التحضري في الجزائر بين الممارسات المحلية والمقاربات العالمية

    أهم تُ اضتراج جُ اُث الخعل مُ الثلاثت في جحص لُ أطفال الترب تُ الخحظير تً للأوشطت اللغو تٍ

    Citation

    NAOUALBoudiaf , ADMINAdmin , بن خرور خير الدين, ,(2019); كتاب جماعي حول أعمال الملتقى الوطني حول "التعليم التحضري في الجزائر بين الممارسات المحلية والمقاربات العالمية,,مطبعة نواصري للنشر

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  • 2019
  • 2019

    العنف الرمزي لدى الشخصية المعادية للمجتمع ( السيكوباتية).

    الكلمات المفتاحية :العنف الرمزي لدى الشخصية المعادية للمجتمع ( السيكوباتية

    Citation

    NAOUAL Boudiaf , aicha boussag , ADMIN Admin , ,(2019), العنف الرمزي لدى الشخصية المعادية للمجتمع ( السيكوباتية).,دالشباب والعنف ...في عالم متغير,جامعة محمد الصديق بن يحي جيجل

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  • 2019
  • 2019

    Configuration of wind farm in Kaberten region: wind potential and optimal capacity

    The configuration of a wind farm depends mainly on the wind potential and the disposition of the wind turbines in this park. The windiest site is the most favorable for a future installation of wind turbines for the production of electricity, also, in this same site, a too dense arrangement would lead to considerable of power losses under the effect of wake. In this context, it is presented a research work that consists of determining the installation conditions of a wind farm; evaluating the wind farm through measurements of wind speed and the location of wind turbines in the park to minimize the effect of wind turbine interference. In order to do this, an evaluation study of the wind potential for the implementation of a wind farm based on the quantification of the wind in speed and directions firstly proposed. Secondly, a method for optimizing the positioning of wind turbines in a wind power farm is used based on the introduction of the Jensen wake model and the application of the iterative pseudo-random distribution approach of the turbines in the site. Simulation results are presented and discussed using data from the Kaberten site in Algeria and the characteristics of the GAMESA G52 wind turbine.

    Citation

    SAID Zergane , MANSOUR Rokbi , ADMIN Admin , , (2019), Configuration of wind farm in Kaberten region: wind potential and optimal capacity, SN Applied Sciences, Vol:1, Issue:12, pages:1-7, Springer

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  • 2019
  • 2019

    سيرابا

    تصور أحداث الرواية ملتقى الصراع بين الحضارة الإسلامية والأوروبية والإفريقية في إكسير من السحرية والغرائبية..إنها طقوس روحية احتدمت فيها شتى العواطف الإنسانية المتضاربة.. أسلوب الرواية مزيج بين السريالية والرمزية والرومانسية والصوفية.. هي قصة شاب جزائري مثقف عاش إبان العشرية السوداء في السنيغال وقد عانى الغربة والاغتراب وهوس الحب مع سيرابا الفتاة السنيغالية الخارقة الأنوثة والآسرة بلونها الخلاسي الجذاب.. وينزلق الشاب في متاهات الغواية وسبل الشيطان.. ويقف في النهاية ممزق الوجدان يطارد الوهم واللاجدوى تحت تأثير سيرابا..

    Citation

    MOHAMEDSaadoun , ADMINAdmin , ,(2019); سيرابا,,دار خيال للنشر والترجمة، برج بوعريريج

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  • 2019
  • 2019

    La société Ḥuḍni d’Algérie et son habitat : colonisation et transformation des formes d’habitat domestique (fin XIXe - mi XXe siècle)

    Les connaissances historiques que nous avons de la région du Ḥuḍna ne remontent pas au-delà du iie siècle de notre ère, soit au moment de la créa￾tion, par les Romains, des zones frontières, généralement marquées par une route et un dispositif défensif de postes militaires fortifiés : le limes (Guédon, 2006). Contrairement au royaume oriental d’Ifriqiyya contrôlé par les souve￾rains aghlabides et hafsides, le Ḥuḍna était dominé, à l’Antiquité tardive, par les tribus berbères. Vers la fin du xvie siècle, le Ḥuḍna fut rattaché politique￾ment au beylik turc de l’Est, région avec laquelle se développèrent des rela￾tions économiques. Le Ḥuḍna avait de grands soucis liés à la précarité de ses pâturages. La réponse apportée par cette société pastorale fut principalement la mobilité dans l’espace. La forte dépendance par rapport à la végétation et à l’eau avait transformé les Ḥuḍni (habitants de la région du Ḥuḍna) en pasteurs nomades, capables d’exploiter au mieux les différents terroirs, ainsi que leurs complémentarités dans le temps. Ainsi, ce nomadisme généraliséet la transhumance d’été qui le caractérisait contribuèrent à créer des liens saisonniers entre le Ḥuḍna et les hautes plaines (Sebhi, 1987). Ce mode de vie nomade impliquait un habitat ambulant : al-gitûn1

    Citation

    Hynda BOUTABBA , ADMIN Admin , Mili.Mohamed@univ-msila.dz, , (2019), La société Ḥuḍni d’Algérie et son habitat : colonisation et transformation des formes d’habitat domestique (fin XIXe - mi XXe siècle), Espace & Société, Vol:179, Issue:4, pages:163-184, Érès

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  • 2019
  • 2019

    ذوي الاحتياجات الخاصة في مؤسسات التعليم العالي بين متطلبات الجودة الشاملة وصعوبات الدمج

    إن دمج الطلاب المعاقين من ذوي الاحتياجات الخاصة في مؤسسات التعليم العالي بشكل عام لم يعرف حتى الآن تقدما ملحوظا، في الجامعات الجزائرية كما هو الحال في الجامعات الغربية، رغم تزايد عدد الطلاب ذوي الإعاقة المسجلين في الجامعة الزائرية.

    Citation

    NOURDINE Djaalab , ADMIN Admin , HOCINE Guersas , ,(2019), ذوي الاحتياجات الخاصة في مؤسسات التعليم العالي بين متطلبات الجودة الشاملة وصعوبات الدمج,أسس ومعايير التقويم الذاتي وضمان الجودة في الجامعة,جامعة الحاج لخضر-باتنة

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  • 2019
  • 2019

    Model Selection of Sea Clutter Using Cross Validation Method

    This work concerns a model selection of sea radar clutter used for adaptive target detection. Three distributions without thermal noise are considered; K, Pareto type II and compound Gaussian inverse Gaussian (CG-IG) with scale and shape parameters. The model selection is carried out by comparing the experimental complementary cumulative distribution function (CCDF), drawn from the recorded data intensity, to a set of the CCDF curves derived from the underling models. To do this, the cross validation technique is used after dividing a set of data into four segments. The best distribution is selected in which the mean of the means square of errors (MSEs) between the real CCDF curve and the fitted CCDF curve is minimal. Fitting comparisons of models are illustrated through overall data of Intelligent PIxel X-band radar (IPIX). From this study, it is shown that the Pareto type II distribution is suited in several cases of a low cell resolution. On the other hand, the K and CG-IG models characterize generally sea clutter with medium and high cell resolutions.

    Citation

    Ahmed BENTOUMI , ADMIN Admin , Taha hocine Kerbaa , ADMIN Admin , AMAR Mezache , , (2019), Model Selection of Sea Clutter Using Cross Validation Method, Procedia Computer Science, Vol:158, Issue:, pages:Pages 394-400, Elsevier

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  • 2019
  • 2019

    Model Selection of Sea Clutter Using Cross Validation Method

    This work concerns a model selection of sea radar clutter used for adaptive target detection. Three distributions without thermal noise are considered; K, Pareto type II and compound Gaussian inverse Gaussian (CG-IG) with scale and shape parameters. The model selection is carried out by comparing the experimental complementary cumulative distribution function (CCDF), drawn from the recorded data intensity, to a set of the CCDF curves derived from the underling models. To do this, the cross validation technique is used after dividing a set of data into four segments. The best distribution is selected in which the mean of the means square of errors (MSEs) between the real CCDF curve and the fitted CCDF curve is minimal. Fitting comparisons of models are illustrated through overall data of Intelligent PIxel X-band radar (IPIX). From this study, it is shown that the Pareto type II distribution is suited in several cases of a low cell resolution. On the other hand, the K and CG-IG models characterize generally sea clutter with medium and high cell resolutions.

    Citation

    Ahmed BENTOUMI , ADMIN Admin , Taha hocine Kerbaa , ADMIN Admin , AMAR Mezache , , (2019), Model Selection of Sea Clutter Using Cross Validation Method, Procedia Computer Science, Vol:158, Issue:, pages:Pages 394-400, Elsevier

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  • 2018-12-21
  • 2018-12-21

    معوقات التحالف الاستراتيجي بين المؤسسات الوطنية والأجنبية في الجزائر وسبل تفعيلها

    للتحالفات الاستراتيجية أهمية كبيرة خاصة في بيئة تتسم بديناميكية المنافسة وذلك لما تقدمه من مكاسب لكلا الطرفين المتحالفين أو لمجموعة الأطراف المتحالفة، وعلى ضوء ما سبق تسعى المؤسسات الجزائرية لتوقيع تحالفات استراتيجية مع الشركات الأجنبية لاكتساب الخبرة والمزايا التنافسية التي تمكنها من النمو والتطور مستقبلا مع أخذها بعين الاعتبار مجموعة الصعوبات المعوقات التي يمكن أن تواجهها داخل الوطن كونها حليف مضيف ولأن هذا الخيار الاستراتيجي جديد نوعا ما في الجزائر.

    Citation

    Hadjer Messaouda Abdelkrim , ADMIN Admin , ADMIN Admin , عبد الكريم هاجر مسعودة, , (2018-12-21), معوقات التحالف الاستراتيجي بين المؤسسات الوطنية والأجنبية في الجزائر وسبل تفعيلها, مجلة البحوث الادارية والاقتصادية, Vol:2, Issue:2, pages:147-159, https://www.asjp.cerist.dz/en/article/128257

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  • 2018-12-21
  • 2018-12-21

    معوقات التحالف الاستراتيجي بين المؤسسات الوطنية والأجنبية في الجزائر وسبل تفعيلها

    للتحالفات الاستراتيجية أهمية كبيرة خاصة في بيئة تتسم بديناميكية المنافسة وذلك لما تقدمه من مكاسب لكلا الطرفين المتحالفين أو لمجموعة الأطراف المتحالفة، وعلى ضوء ما سبق تسعى المؤسسات الجزائرية لتوقيع تحالفات استراتيجية مع الشركات الأجنبية لاكتساب الخبرة والمزايا التنافسية التي تمكنها من النمو والتطور مستقبلا مع أخذها بعين الاعتبار مجموعة الصعوبات المعوقات التي يمكن أن تواجهها داخل الوطن كونها حليف مضيف ولأن هذا الخيار الاستراتيجي جديد نوعا ما في الجزائر.

    Citation

    Hadjer Messaouda Abdelkrim , ADMIN Admin , ADMIN Admin , عبد الكريم هاجر مسعودة, , (2018-12-21), معوقات التحالف الاستراتيجي بين المؤسسات الوطنية والأجنبية في الجزائر وسبل تفعيلها, مجلة البحوث الادارية والاقتصادية, Vol:2, Issue:2, pages:147-159, https://www.asjp.cerist.dz/en/article/128257

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  • 2018-12-10
  • 2018-12-10

    مبدأ سيادة الدول في ظل مفهوم مبدأ التدخل الإنساني

    إن هذه الدراسة عالجت مفهوم مبدأ التدخل الانساني وعلاقته بمبدأ سيادة الدول، ولتحديد ماهية مبدأ التدخل الانساني وجب تحرير مصطلح مبدأ التدخل في اللغة العربية من حيث اعتباره مصطلحاً حديث النشأة من جهة، ومن حيث اصطلاح فقهاء القانون الدولي من جهة ثانية، وهذا ما دعانا إلى تحديد الفوارق بين مبدأ التدخل الانساني وبعض المصطلحات المشابهة له كالمساعدات الانسانية وكذلك التدخل لحماية الرعايا، لتفادي الالتباس الواقع بينهما إن واقعنا المعيش اليوم يشهد تدخلات في شؤون دول العالم الثالث من قبل الدول المهيمنة على الساحة الدولية، حيث جعلت هذه الاخيرة من مبدأ التدخل الانساني مطية لتحقيق مصالحها ومأربها الشخصية، وما نشهده اليوم من حروب اهلية ونزوح للآلاف من اللاجئين في بعض الدول الضعيفة اقتصاديا وسياسياً عموماً وفي العالم العربي خصوصاً ما هو إلا نتيجة حتمية للاستخدام الغير مضبوط لمبدأ التدخل الانساني، وانتهاك واضح لمبدأ السيادة الدولية ومبدأ المساواة في السيادة

    Citation

    abderrahman mounir , ADMIN Admin , , (2018-12-10), مبدأ سيادة الدول في ظل مفهوم مبدأ التدخل الإنساني, صوت القانون, Vol:5, Issue:2, pages:22, جامعة خميس مليانة

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  • 2018-12-02
  • 2018-12-02

    Caractérisation de l’élevage caprin en zone steppique

    Etude a pour objectif la caractérisation de l'élevage caprin dans la région de M'sila. Ce type d'élevage aux grandes potentialités, conduit en système extensif a été étudié dans le cadre de l'encadrement des mémoires de Master et a pour but de développer et valoriser cette activité dans une zone agropastorale.

    Citation

    Hocine GUERMAH , ADMIN Admin , ,(2018-12-02), Caractérisation de l’élevage caprin en zone steppique,Rencontres Recherches Ruminants,Paris (France)

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  • 2018
  • 2018

    تشخيص العوامل الداخلية والخارجية لتطبيق استراتيجية الإدارة الإلكترونية في المؤسسات الجامعية -دراسة حالة جامعة محمد بوضياف المسيلة – الجزائر-

    هدفت هذه الدراسة إلى تشخيص كل من متغيرات البيئة الداخلية والخارجية لتطبيق استراتيجية الإدارة الإلكترونية في المؤسسات الجامعية، بحيث استخدمنا الاستبيان لجمع البيانات على عينة مكونة من 46 إداري على مستوى جامعة محمد بوضياف- المسيلة، وتم التوصل إلى أن توفر عوامل البيئة الداخلية على مستوى الجامعة محل الدراسة لم يرقى بعد إلى المستوى المقبول، أما عوامل البيئة الخارجية فهي متوفرة بمستوى مقبول، كما تم تقديم نموذج مقترح لتطبيق استراتيجية الإدارة الإلكترونية. الكلمات المفتاحية: عوامل البيئة الداخلية، عوامل البيئة الخارجية، الإدارة الإلكترونية، المؤسسة الجامعية، جامعة المسيلة.

    Citation

    Sana RAHMANI , ADMIN Admin , , (2018), تشخيص العوامل الداخلية والخارجية لتطبيق استراتيجية الإدارة الإلكترونية في المؤسسات الجامعية -دراسة حالة جامعة محمد بوضياف المسيلة – الجزائر-, مجلة الحقوق والعلوم الانسانية- العدد الاقتصادي (جامعة الجلفة), Vol:1, Issue:35, pages:121-134, جامعة الجلفة

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  • 2018
  • 2018

    Investigating the rheological behavior of Algerian crude oil stemming from station of separation (quagmire)

    n experimental study was conducted to investigate the rheological behavior of Algerian crude oil stemming from station of separation (quagmire) of the Tin Fouye Tabankort sector (southern Algeria). The rheological measurements at different temperatures (20°C, 30°C and 50°C) were performed employing AR 2000 rheometer of TA-Instruments. Several parameters such as shear rate, the temperature and the presence of crude oil from another quagmire on the rheological properties have been studied. The experimental results show that the studied crude oil displays non-Newtonian shear thinning behavior at low values of shear rate and a Newtonian behavior at high values of shear rate, which can be best presented by the Casson model. The rheological examination tests (flow and dynamic mode (oscillation)) have shown that the rheological properties of the crude oil were significantly influenced by the temperature and the crude oil addition.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, Farid Souas, , (2018), Investigating the rheological behavior of Algerian crude oil stemming from station of separation (quagmire), Petroleum Science and Technology, Vol:46, Issue:14, pages:1093-1099, Taylor & Francis

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  • 2018
  • 2018

    Investigating the rheological behavior of Algerian crude oil stemming from station of separation (quagmire)

    n experimental study was conducted to investigate the rheological behavior of Algerian crude oil stemming from station of separation (quagmire) of the Tin Fouye Tabankort sector (southern Algeria). The rheological measurements at different temperatures (20°C, 30°C and 50°C) were performed employing AR 2000 rheometer of TA-Instruments. Several parameters such as shear rate, the temperature and the presence of crude oil from another quagmire on the rheological properties have been studied. The experimental results show that the studied crude oil displays non-Newtonian shear thinning behavior at low values of shear rate and a Newtonian behavior at high values of shear rate, which can be best presented by the Casson model. The rheological examination tests (flow and dynamic mode (oscillation)) have shown that the rheological properties of the crude oil were significantly influenced by the temperature and the crude oil addition.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, Farid Souas, , (2018), Investigating the rheological behavior of Algerian crude oil stemming from station of separation (quagmire), Petroleum Science and Technology, Vol:46, Issue:14, pages:1093-1099, Taylor & Francis

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  • 2018
  • 2018

    Investigating the rheological behavior of Algerian crude oil stemming from station of separation (quagmire)

    n experimental study was conducted to investigate the rheological behavior of Algerian crude oil stemming from station of separation (quagmire) of the Tin Fouye Tabankort sector (southern Algeria). The rheological measurements at different temperatures (20°C, 30°C and 50°C) were performed employing AR 2000 rheometer of TA-Instruments. Several parameters such as shear rate, the temperature and the presence of crude oil from another quagmire on the rheological properties have been studied. The experimental results show that the studied crude oil displays non-Newtonian shear thinning behavior at low values of shear rate and a Newtonian behavior at high values of shear rate, which can be best presented by the Casson model. The rheological examination tests (flow and dynamic mode (oscillation)) have shown that the rheological properties of the crude oil were significantly influenced by the temperature and the crude oil addition.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, Farid Souas, , (2018), Investigating the rheological behavior of Algerian crude oil stemming from station of separation (quagmire), Petroleum Science and Technology, Vol:46, Issue:14, pages:1093-1099, Taylor & Francis

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  • 2018
  • 2018

    Improvement of rheological properties of Algeria crude oil by addition of extra-light crude oil and a surfactant agent

    Effect of surfactant and extra-light crude oil addition on the rheological behaviors of an Algeria crude oil in order to improving its flowability were studied at low temperature. These rheological properties include steady flow behavior, yield stress and viscoelastic behavior. An AR-2000 rheometer was employed in all of the rheological examination tests. Results show that Toluene and extra-light crude oil addition causes a strong reduction in viscosity, the yield stress and can effectively increase of crude oil transport capacity. The toluene addition gets its best flow capacity and lowest viscosity at 6%. The extra-light crude oil addition obtains its best flow capacity and lowest viscosity at 50%. The viscoelasticity character of the crude oil has indicate a significantly influence by the addition of Toluene and extra-light crude oil.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, , (2018), Improvement of rheological properties of Algeria crude oil by addition of extra-light crude oil and a surfactant agent, Petroleum Science and Technology, Vol:36, Issue:22, pages:1864-1874, Taylor & Francis

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  • 2018
  • 2018

    Improvement of rheological properties of Algeria crude oil by addition of extra-light crude oil and a surfactant agent

    Effect of surfactant and extra-light crude oil addition on the rheological behaviors of an Algeria crude oil in order to improving its flowability were studied at low temperature. These rheological properties include steady flow behavior, yield stress and viscoelastic behavior. An AR-2000 rheometer was employed in all of the rheological examination tests. Results show that Toluene and extra-light crude oil addition causes a strong reduction in viscosity, the yield stress and can effectively increase of crude oil transport capacity. The toluene addition gets its best flow capacity and lowest viscosity at 6%. The extra-light crude oil addition obtains its best flow capacity and lowest viscosity at 50%. The viscoelasticity character of the crude oil has indicate a significantly influence by the addition of Toluene and extra-light crude oil.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, , (2018), Improvement of rheological properties of Algeria crude oil by addition of extra-light crude oil and a surfactant agent, Petroleum Science and Technology, Vol:36, Issue:22, pages:1864-1874, Taylor & Francis

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  • 2018
  • 2018

    Rheological behavior of Algerian crude oil: effect of temperature and refined product

    The rheological behavior and its variation with temperature and refined product concentration of a crude oil sample coming from a quagmire of the separation station of Tin Fouye Tabankort oilfield/southern Algeria were investigated experimentally. The experiments were carried out at various temperatures (20, 30 and 50 °C) over the shear rate range of 0 to 700 s−1 by using a controlled stress rheometer (AR 2000, TA Instrument). The results showed that the crude oil exhibit non-Newtonian of shear thinning behavior at low shear rate and Newtonian behavior at high shear rate and was adequately described by Casson and Herschel–Bulkley models. The rheological measurements through the steady flow test and viscoelastic behavior, including the storage modulus (G′), loss modulus (G″), and complex modulus (G*), has indicated that the rheological properties of the crude oil were greatly influenced by the temperature and the additive concentration.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Safri Abdelhamid, Benmounah Abdelbaki, Souas Farid, , (2018), Rheological behavior of Algerian crude oil: effect of temperature and refined product, Petroleum Science and Technology, Vol:36, Issue:21, pages:1757-1763, Taylor & Francis

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  • 2018
  • 2018

    Rheological behavior of Algerian crude oil: effect of temperature and refined product

    The rheological behavior and its variation with temperature and refined product concentration of a crude oil sample coming from a quagmire of the separation station of Tin Fouye Tabankort oilfield/southern Algeria were investigated experimentally. The experiments were carried out at various temperatures (20, 30 and 50 °C) over the shear rate range of 0 to 700 s−1 by using a controlled stress rheometer (AR 2000, TA Instrument). The results showed that the crude oil exhibit non-Newtonian of shear thinning behavior at low shear rate and Newtonian behavior at high shear rate and was adequately described by Casson and Herschel–Bulkley models. The rheological measurements through the steady flow test and viscoelastic behavior, including the storage modulus (G′), loss modulus (G″), and complex modulus (G*), has indicated that the rheological properties of the crude oil were greatly influenced by the temperature and the additive concentration.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Safri Abdelhamid, Benmounah Abdelbaki, Souas Farid, , (2018), Rheological behavior of Algerian crude oil: effect of temperature and refined product, Petroleum Science and Technology, Vol:36, Issue:21, pages:1757-1763, Taylor & Francis

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  • 2018
  • 2018

    Rheological behavior of Algerian crude oil: effect of temperature and refined product

    The rheological behavior and its variation with temperature and refined product concentration of a crude oil sample coming from a quagmire of the separation station of Tin Fouye Tabankort oilfield/southern Algeria were investigated experimentally. The experiments were carried out at various temperatures (20, 30 and 50 °C) over the shear rate range of 0 to 700 s−1 by using a controlled stress rheometer (AR 2000, TA Instrument). The results showed that the crude oil exhibit non-Newtonian of shear thinning behavior at low shear rate and Newtonian behavior at high shear rate and was adequately described by Casson and Herschel–Bulkley models. The rheological measurements through the steady flow test and viscoelastic behavior, including the storage modulus (G′), loss modulus (G″), and complex modulus (G*), has indicated that the rheological properties of the crude oil were greatly influenced by the temperature and the additive concentration.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Safri Abdelhamid, Benmounah Abdelbaki, Souas Farid, , (2018), Rheological behavior of Algerian crude oil: effect of temperature and refined product, Petroleum Science and Technology, Vol:36, Issue:21, pages:1757-1763, Taylor & Francis

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  • 2018
  • 2018

    Daily Global Solar Radiation Estimation Based on Air Temperature: Case of Study South of Algeria

    Global solar radiation is needed for the analysis and scaling of solar conversion systems; however, global measurements of solar radiation are not available in all Algerian cities. The use of empirical models using an accessible parameter is a solution to this problem. In this study, seven empirical Models namely Hargreaves and Samani, Chen, M.F. Li, H.Li, Bristow and Campbell, Okonkwo and Abraha Savage have been employed to estimate daily average global solar radiation on the horizontal surface. These models use extreme temperatures (minimum and maximum). They were applied to three south Algerian sites (Biskra, Ghardaia, and Tamanrasset). The analyzed data were provided by the NASA site and cover four years (2001-2004). The validation of the models for predicting daily global solar radiation was done using four statistical parameters (R², MBE, RMSE, and RPE). The results show that Bristow and Compbell Model shows better performance than the other models in all sites. A new model is proposed for each site. The results show that this later is the best one compared with the seven models analyzed. Therefore, the developed model can be suggested to estimate daily global solar radiation using only extreme air temperatures in south Algeria.

    Citation

    Razika IHADDADENE , Nabila IHADDADENE , ADMIN Admin , ,(2018), Daily Global Solar Radiation Estimation Based on Air Temperature: Case of Study South of Algeria,International Conference on renewable energy and environment engineering,Paris.France

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  • 2017-06-20
  • 2017-06-20

    تأثير النزاع الاثني على مساعي اصلاح الحكم في افريقيا

    يعتبر التنوع اإلثني من أهم الظواهر اإلنسانية التي تتقاسمها العديد من المجتمعات حيث ينتشر في العالم قرابة 8000 اثنية، في افريقيا وحدها 2000 اثنية متباينة، وفي آسيا التي تحتضن 3 مليارات من السكان 1 يوجد بها 2000 اثنية. كما تؤكد التجارب والممارسات الميدانية أن درجة انصهار هذه اإلثنيات وتعايشها داخل المجتمع الواحد على المستوى اإلفريقي ضئيلة جدا في ظل سوء تعامل السلطات السياسية واالجتماعية معها، مما يفضي إلى مظاهر النزاع والتعصب التي تنعكس على الديمقراطية كما يبين ذلك بعض الخبراء والمحللين كون أن البلدان اإلفريقية التي حققت أكبر قدر ممكن من التقدم نحو الديمقراطية بشكل عام فقط هي الدول التي لها خبرة بسيطة مع النزاعات بمختلف أنواعها مثل بنين وغانا ومالي والسنغال، في المقابل فإن التقدم الديمقراطي في البلدان التي عانت من تجارب طويلة من الحروب األهلية كان بطيئا ومحدودا وليس فقط 2 بسبب االقتصاد المنهار والبنية التحتية. حيث صار من الواضح أن معظم دول إفريقيا تمر بمرحلة انتقالية في اتجاه نظام سياسي ال تزال نتيجته النهائية غير واضحة، ينتج عن البدء في هذه المسيرة إقامة مؤسسات ديمقراطية، لكن اإلشكالية هي استمرارية النزاعات اإلثنية وآثارها على بناء واستقرار الدولة في افريقيا والدور الذي تلعبه في دفع المسيرة الديمقراطية أو تحييدها عن مسارها ، وما سبل ادارة االختالفات االثنية للمضي قدما باصالح انظمة الحكم في افريقيا؟

    Citation

    ABDELAZIZ Selma-achba , ADMIN Admin , ADMIN Admin , ,(2017-06-20), تأثير النزاع الاثني على مساعي اصلاح الحكم في افريقيا,تأثير التعددية الاثنية وأزمات الهوية على بناء واستقرار افريقيا,جامعة باتنة1

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  • 2017-06-20
  • 2017-06-20

    تأثير النزاع الاثني على مساعي اصلاح الحكم في افريقيا

    يعتبر التنوع اإلثني من أهم الظواهر اإلنسانية التي تتقاسمها العديد من المجتمعات حيث ينتشر في العالم قرابة 8000 اثنية، في افريقيا وحدها 2000 اثنية متباينة، وفي آسيا التي تحتضن 3 مليارات من السكان 1 يوجد بها 2000 اثنية. كما تؤكد التجارب والممارسات الميدانية أن درجة انصهار هذه اإلثنيات وتعايشها داخل المجتمع الواحد على المستوى اإلفريقي ضئيلة جدا في ظل سوء تعامل السلطات السياسية واالجتماعية معها، مما يفضي إلى مظاهر النزاع والتعصب التي تنعكس على الديمقراطية كما يبين ذلك بعض الخبراء والمحللين كون أن البلدان اإلفريقية التي حققت أكبر قدر ممكن من التقدم نحو الديمقراطية بشكل عام فقط هي الدول التي لها خبرة بسيطة مع النزاعات بمختلف أنواعها مثل بنين وغانا ومالي والسنغال، في المقابل فإن التقدم الديمقراطي في البلدان التي عانت من تجارب طويلة من الحروب األهلية كان بطيئا ومحدودا وليس فقط 2 بسبب االقتصاد المنهار والبنية التحتية. حيث صار من الواضح أن معظم دول إفريقيا تمر بمرحلة انتقالية في اتجاه نظام سياسي ال تزال نتيجته النهائية غير واضحة، ينتج عن البدء في هذه المسيرة إقامة مؤسسات ديمقراطية، لكن اإلشكالية هي استمرارية النزاعات اإلثنية وآثارها على بناء واستقرار الدولة في افريقيا والدور الذي تلعبه في دفع المسيرة الديمقراطية أو تحييدها عن مسارها ، وما سبل ادارة االختالفات االثنية للمضي قدما باصالح انظمة الحكم في افريقيا؟

    Citation

    ABDELAZIZ Selma-achba , ADMIN Admin , ADMIN Admin , ,(2017-06-20), تأثير النزاع الاثني على مساعي اصلاح الحكم في افريقيا,تأثير التعددية الاثنية وأزمات الهوية على بناء واستقرار افريقيا,جامعة باتنة1

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  • 2017-05-12
  • 2017-05-12

    أثر تطبيق التسويق الاجتماعي على جذب المؤسسات نحو العمل الجمعوي

    من خلال هذا البحث تم التطرق إلى أثر تطبيق التسويق الاجتماعي على جذب المؤسسات نحو العمل الجمعوي، حيث أن نجاح العمل الجمعوي يستلزم وضع برنامج واضح الاهداف قابل للتطبيق من خلال توفير ما تتطلبه هذه البرامج من موارد ونفقات، الشيء الذي يعتبر صعبا ويحتاج جهدا منضما للوصول إلى متبرعين وممولين لدعم المشاريع الخيرية، لذا تستهدف هذه الجمعيات المسؤولية الاجتماعية لدى المؤسسات، حيث تحمل هذه المؤسسات على عاتقها الالتزام بمبادئ المسؤولية الاجتماعية التي تستدعي تضمين الاعتبارات الأخلاقية في الممارسات الإدارية والالتزام نحو المجتمع بترك أثر إيجابي يساعد على التنمية الاجتماعية من خلال مشاريعها الخاصة أو بمساعدة الجمعيات الخيرية، مع الاشارة إلى أن الجمعيات الخيرية في الوقت الراهن مطالبة في برنامجها بامتلاك تصوراستراتيجي بعيد المدى للفعل التنموي الذي يستند على تصور يتخذ من التنمية الاجتماعية مدخلا أساسيا له

    Citation

    rabia BADREDDINE , ADMIN Admin , ,(2017-05-12), أثر تطبيق التسويق الاجتماعي على جذب المؤسسات نحو العمل الجمعوي,دور التسويق الاجتماعي في معالجة الاختلالات الاجتماعية في الجزائر,جامعة البليدة 02 علي لونيسي

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  • 2017
  • 2017

    Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions

    The use of anionic polyelectrolytes is great technological importance to control the stability and flocculation behavior of colloidal suspensions. They are widely used in various industrial products, such as paints, coatings, ceramics, pesticides, pharmaceuticals, cosmetics, and drilling fluids, to modify the rheology and control the stability of the systems.In this investigate, rheological measurements obtained by a coaxial cylinder viscometer (shear rate from 0 to 700 s-1), were carried to highlight the effect of two anionic polyelectrolytes such as, xanthan gum and sodium carboxymethylcellulose (Na-CMC) on the rheological properties of the bentonite suspension. Firstly, Herschel-Bulkley model was used for the flow curves of studied bentonite suspension whose the concentration in solid varies between 3-6%, the regression coefficient > 0.997 for all studied system. Secondly, electrokinetic measurements on all studied suspensions were also carried. Finaly, to asses the influence of polyelectrolytes on bentonite suspension, the rheological tests have been carried out on the polyelectrolytes solutions in absence of bentonite. The rheological behavior of xanthan solutions is shear-thinning non-Newtonian viscosity with yield stress. The obtained results showed that the yield stress and the consistency index increase with increasing bentonite concentration, on the other hand the flow index values decrease. It can be explained that the bentonite has a microscopic structure in platelets. It was noted also, the yield stress observed on rheograms is due to the internal fluid structure that forms at rest between the platelets. In the absence of flow, the platelets form rigid aggregates that are resistant to a certain value. from this yield , the structure is destroyed and the wafers are aligned with the flow. Also, the obtained results of the electrokinetic study, have showed an increase of the zeta potential of CMC and xanthan dispersions when the concentration of polymer in solution increases

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelbaki Benmounah, Khaled Khaled Benyounes, Kaci Chelah, ,(2017), Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions,CFM 2017-23ème Congrès Français de Mécanique,France

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  • 2017
  • 2017

    Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions

    The use of anionic polyelectrolytes is great technological importance to control the stability and flocculation behavior of colloidal suspensions. They are widely used in various industrial products, such as paints, coatings, ceramics, pesticides, pharmaceuticals, cosmetics, and drilling fluids, to modify the rheology and control the stability of the systems.In this investigate, rheological measurements obtained by a coaxial cylinder viscometer (shear rate from 0 to 700 s-1), were carried to highlight the effect of two anionic polyelectrolytes such as, xanthan gum and sodium carboxymethylcellulose (Na-CMC) on the rheological properties of the bentonite suspension. Firstly, Herschel-Bulkley model was used for the flow curves of studied bentonite suspension whose the concentration in solid varies between 3-6%, the regression coefficient > 0.997 for all studied system. Secondly, electrokinetic measurements on all studied suspensions were also carried. Finaly, to asses the influence of polyelectrolytes on bentonite suspension, the rheological tests have been carried out on the polyelectrolytes solutions in absence of bentonite. The rheological behavior of xanthan solutions is shear-thinning non-Newtonian viscosity with yield stress. The obtained results showed that the yield stress and the consistency index increase with increasing bentonite concentration, on the other hand the flow index values decrease. It can be explained that the bentonite has a microscopic structure in platelets. It was noted also, the yield stress observed on rheograms is due to the internal fluid structure that forms at rest between the platelets. In the absence of flow, the platelets form rigid aggregates that are resistant to a certain value. from this yield , the structure is destroyed and the wafers are aligned with the flow. Also, the obtained results of the electrokinetic study, have showed an increase of the zeta potential of CMC and xanthan dispersions when the concentration of polymer in solution increases

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelbaki Benmounah, Khaled Khaled Benyounes, Kaci Chelah, ,(2017), Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions,CFM 2017-23ème Congrès Français de Mécanique,France

    See publication
  • 2017
  • 2017

    Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions

    The use of anionic polyelectrolytes is great technological importance to control the stability and flocculation behavior of colloidal suspensions. They are widely used in various industrial products, such as paints, coatings, ceramics, pesticides, pharmaceuticals, cosmetics, and drilling fluids, to modify the rheology and control the stability of the systems.In this investigate, rheological measurements obtained by a coaxial cylinder viscometer (shear rate from 0 to 700 s-1), were carried to highlight the effect of two anionic polyelectrolytes such as, xanthan gum and sodium carboxymethylcellulose (Na-CMC) on the rheological properties of the bentonite suspension. Firstly, Herschel-Bulkley model was used for the flow curves of studied bentonite suspension whose the concentration in solid varies between 3-6%, the regression coefficient > 0.997 for all studied system. Secondly, electrokinetic measurements on all studied suspensions were also carried. Finaly, to asses the influence of polyelectrolytes on bentonite suspension, the rheological tests have been carried out on the polyelectrolytes solutions in absence of bentonite. The rheological behavior of xanthan solutions is shear-thinning non-Newtonian viscosity with yield stress. The obtained results showed that the yield stress and the consistency index increase with increasing bentonite concentration, on the other hand the flow index values decrease. It can be explained that the bentonite has a microscopic structure in platelets. It was noted also, the yield stress observed on rheograms is due to the internal fluid structure that forms at rest between the platelets. In the absence of flow, the platelets form rigid aggregates that are resistant to a certain value. from this yield , the structure is destroyed and the wafers are aligned with the flow. Also, the obtained results of the electrokinetic study, have showed an increase of the zeta potential of CMC and xanthan dispersions when the concentration of polymer in solution increases

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelbaki Benmounah, Khaled Khaled Benyounes, Kaci Chelah, ,(2017), Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions,CFM 2017-23ème Congrès Français de Mécanique,France

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  • 2017
  • 2017

    Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions

    The use of anionic polyelectrolytes is great technological importance to control the stability and flocculation behavior of colloidal suspensions. They are widely used in various industrial products, such as paints, coatings, ceramics, pesticides, pharmaceuticals, cosmetics, and drilling fluids, to modify the rheology and control the stability of the systems.In this investigate, rheological measurements obtained by a coaxial cylinder viscometer (shear rate from 0 to 700 s-1), were carried to highlight the effect of two anionic polyelectrolytes such as, xanthan gum and sodium carboxymethylcellulose (Na-CMC) on the rheological properties of the bentonite suspension. Firstly, Herschel-Bulkley model was used for the flow curves of studied bentonite suspension whose the concentration in solid varies between 3-6%, the regression coefficient > 0.997 for all studied system. Secondly, electrokinetic measurements on all studied suspensions were also carried. Finaly, to asses the influence of polyelectrolytes on bentonite suspension, the rheological tests have been carried out on the polyelectrolytes solutions in absence of bentonite. The rheological behavior of xanthan solutions is shear-thinning non-Newtonian viscosity with yield stress. The obtained results showed that the yield stress and the consistency index increase with increasing bentonite concentration, on the other hand the flow index values decrease. It can be explained that the bentonite has a microscopic structure in platelets. It was noted also, the yield stress observed on rheograms is due to the internal fluid structure that forms at rest between the platelets. In the absence of flow, the platelets form rigid aggregates that are resistant to a certain value. from this yield , the structure is destroyed and the wafers are aligned with the flow. Also, the obtained results of the electrokinetic study, have showed an increase of the zeta potential of CMC and xanthan dispersions when the concentration of polymer in solution increases

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelbaki Benmounah, Khaled Khaled Benyounes, Kaci Chelah, ,(2017), Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions,CFM 2017-23ème Congrès Français de Mécanique,France

    See publication
  • 2017
  • 2017

    Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions

    The use of anionic polyelectrolytes is great technological importance to control the stability and flocculation behavior of colloidal suspensions. They are widely used in various industrial products, such as paints, coatings, ceramics, pesticides, pharmaceuticals, cosmetics, and drilling fluids, to modify the rheology and control the stability of the systems.In this investigate, rheological measurements obtained by a coaxial cylinder viscometer (shear rate from 0 to 700 s-1), were carried to highlight the effect of two anionic polyelectrolytes such as, xanthan gum and sodium carboxymethylcellulose (Na-CMC) on the rheological properties of the bentonite suspension. Firstly, Herschel-Bulkley model was used for the flow curves of studied bentonite suspension whose the concentration in solid varies between 3-6%, the regression coefficient > 0.997 for all studied system. Secondly, electrokinetic measurements on all studied suspensions were also carried. Finaly, to asses the influence of polyelectrolytes on bentonite suspension, the rheological tests have been carried out on the polyelectrolytes solutions in absence of bentonite. The rheological behavior of xanthan solutions is shear-thinning non-Newtonian viscosity with yield stress. The obtained results showed that the yield stress and the consistency index increase with increasing bentonite concentration, on the other hand the flow index values decrease. It can be explained that the bentonite has a microscopic structure in platelets. It was noted also, the yield stress observed on rheograms is due to the internal fluid structure that forms at rest between the platelets. In the absence of flow, the platelets form rigid aggregates that are resistant to a certain value. from this yield , the structure is destroyed and the wafers are aligned with the flow. Also, the obtained results of the electrokinetic study, have showed an increase of the zeta potential of CMC and xanthan dispersions when the concentration of polymer in solution increases

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelbaki Benmounah, Khaled Khaled Benyounes, Kaci Chelah, ,(2017), Effect of xanthan gum and sodium carboxymetylcellulose on the rheological properties and zeta potential of bentonite suspensions,CFM 2017-23ème Congrès Français de Mécanique,France

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  • 2017
  • 2017

    Experimental improvement of rheological parameters of crude oil in flow

    Several technics have been used to increase the mobility of crude oil pipeline transportation. The addition of the copolymer, poly (ethylene-co-vinyl acetate) (EVA) containing 12 % of vinyl acetate, can improves the rheological parameters and ease the flow of crude oil. In this present study we studied the effect of the concentration of vinyl acetate containing (EVA) on the viscosity, and the yield stress of Algerian crude oil from oil fields TFT. The rheological tests were made at low temperature 6.3,10 and 40 °C. Different concentrations of copolymer (EVA12) were tested 100, 200, 300, 400 ppm. The results obtained showed that the EVA allows reducing the apparent viscosity and the yield stress of crude oil and the results not only depends on the concentration of poly (ethylene-co-vinyl acetate) (EVA) but the temperature; also have an important influence.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Safri Abdelhamid, Benmounah Abdelbakhi, ,(2017), Experimental improvement of rheological parameters of crude oil in flow,13–Eme Congres de Mecanique Meknès, Maroc,Maroc

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  • 2017
  • 2017

    Experimental improvement of rheological parameters of crude oil in flow

    Several technics have been used to increase the mobility of crude oil pipeline transportation. The addition of the copolymer, poly (ethylene-co-vinyl acetate) (EVA) containing 12 % of vinyl acetate, can improves the rheological parameters and ease the flow of crude oil. In this present study we studied the effect of the concentration of vinyl acetate containing (EVA) on the viscosity, and the yield stress of Algerian crude oil from oil fields TFT. The rheological tests were made at low temperature 6.3,10 and 40 °C. Different concentrations of copolymer (EVA12) were tested 100, 200, 300, 400 ppm. The results obtained showed that the EVA allows reducing the apparent viscosity and the yield stress of crude oil and the results not only depends on the concentration of poly (ethylene-co-vinyl acetate) (EVA) but the temperature; also have an important influence.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Safri Abdelhamid, Benmounah Abdelbakhi, ,(2017), Experimental improvement of rheological parameters of crude oil in flow,13–Eme Congres de Mecanique Meknès, Maroc,Maroc

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  • 2017
  • 2017

    Improvement of the transportation capacity of the crude oil by the addition of a surfactant agent

    This article examines the effect of the concentration of a surfactant on the rheological properties of Algerian crude oil, when the yield stress, the apparent viscosity, the pressure drop and flow rate are evaluated. The surfactant choice is Toluene; different concentrations (2%, 3% and 6%) are tested to improve the transportation capacity of Algerian crude oil. The rheological tests are carried out using the rheometer AR2000 from TA Instruments with a coaxial cylindrical geometry type Couette. Because of large contact surface of the cylinder, one can obtain a good accuracy of the measurements at low viscosity values. Different temperatures were tested. The experimental results show that the rheological behavior of system (crude oil / Toluene) exhibits a non-Newtonian behavior at a low shear rate It was also noted that the increase in the surfactant concentration has an effect on the rheological parameters, the apparent viscosity, yield stress significantly decreased with the addition of toluene. The results obtained also show that the increase in the concentration of the additive also has an effect on the transport capacity of the crude oil, the addition of 6% of toluene has increased the flow rate of the crude oil by 44%.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, ,(2017), Improvement of the transportation capacity of the crude oil by the addition of a surfactant agent,23ème Congrès Français de Mécanique,France

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  • 2017
  • 2017

    Improvement of the transportation capacity of the crude oil by the addition of a surfactant agent

    This article examines the effect of the concentration of a surfactant on the rheological properties of Algerian crude oil, when the yield stress, the apparent viscosity, the pressure drop and flow rate are evaluated. The surfactant choice is Toluene; different concentrations (2%, 3% and 6%) are tested to improve the transportation capacity of Algerian crude oil. The rheological tests are carried out using the rheometer AR2000 from TA Instruments with a coaxial cylindrical geometry type Couette. Because of large contact surface of the cylinder, one can obtain a good accuracy of the measurements at low viscosity values. Different temperatures were tested. The experimental results show that the rheological behavior of system (crude oil / Toluene) exhibits a non-Newtonian behavior at a low shear rate It was also noted that the increase in the surfactant concentration has an effect on the rheological parameters, the apparent viscosity, yield stress significantly decreased with the addition of toluene. The results obtained also show that the increase in the concentration of the additive also has an effect on the transport capacity of the crude oil, the addition of 6% of toluene has increased the flow rate of the crude oil by 44%.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, ,(2017), Improvement of the transportation capacity of the crude oil by the addition of a surfactant agent,23ème Congrès Français de Mécanique,France

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  • 2017
  • 2017

    الصحة النفسیة وعلاقتها بالأداء الوظیفي لدى أساتذة التعلیم المتوسط. دراسة میدانیة ببعض متوسطات مدینة المسیلة

    This study aimed at finding out the relationship between psychological health of middle school’s teachers and its relation to their functional performance in some of middle schools in Msila in Algeria, for the school year 2015/2016, and the results of the study showed that both the psychological health and the functional performance of the study sample are at high level, and there exist a positive correlation which is statistically significant between the variables of the study. the study concluded a set of proposals in the light of the previous results.

    Citation

    BOUDJEMAA HERIZI , ADMIN Admin , فرحات بن ناصر, , (2017), الصحة النفسیة وعلاقتها بالأداء الوظیفي لدى أساتذة التعلیم المتوسط. دراسة میدانیة ببعض متوسطات مدینة المسیلة, بوجمعة حريزي, Vol:10, Issue:2, pages:146-160, دراسات نفسية وتربوية

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  • 2016
  • 2016

    SVM technique based on DTC sensorless control optimized by ANN applied to a double stator asynchronous machine fed by three level six phase inverter

    The present paper is focused on Direct Torque Control (DTC) Speed Sensorless of a double stator asynchronous machine (DSAM) fed by three-level six-phase inverter. The inverter switches control is based on Space Vector Modulation technique optimized by Artificial Neuronal Network (SVM-ANN). Compared to the conventional DTC technique, voltage vectors selection table is replaced by space vector modulation technique to realize a DTC-SVM speed sensorless control. Moreover, to validate the proposed control technique several tests were conducted by computer simulations. The obtained results have showed high speed performances and a reduction in torque and flux fluctuations compared to other techniques (DTC and DTC-SVM) when the proposed DTC-SVM-ANN control technique is applied to control a double stator asynchronous machine fed by a three-level six-phase inverter.

    Citation

    ALI CHEBABHI , FOUAD Berrabah , ADMIN Admin , , (2016), SVM technique based on DTC sensorless control optimized by ANN applied to a double stator asynchronous machine fed by three level six phase inverter, Mediterranean Journal of Measurement and Control, Vol:12, Issue:2, pages:571-579, Mediterranean Journal of Measurement and Control

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  • 2016
  • 2016

    L’architecture domestique en terre entre préservation et modernité: cas d'une ville oasienne d'Algérie" Aoulef"

    “Living in the desert seems paradoxical because it is by definition a place that life gives up. However, there, people live, since forever and knew, with ingenuity, take advantage of the few available materials to build houses, and take shelter there in an unfriendly climate” (Le Quellec, 2006). Since the dawn of time, the Algerian Southwest region was animated by a network of human settlements built according to the urban model of the Islamic medina and its traditional habitat of adobe; collective hamlets known as ksours. Being a place of transit of the great desert caravans, linking North Africa to the rest of the continent, the city of Aoulef was one of the old oasis cities of Algeria who has known over the centuries an urban and architectural development. It was characterized by a set of ksour separated by the line of foggaras and embellished by the landscape oases. Cradle of exceptional traditional earthen architecture, housing in the city of Aoulef presents a perfect site integration and adaptation to harsh climatic conditions. This paper attempts to learn about the typological and conceptual feature of the domestic architecture of this region, its ancestral building techniques, specific to the southern regions, as well as the current constructive alternatives adopted by the local people.

    Citation

    Hynda BOUTABBA , ADMIN Admin , MOHAMED Mili , ADMIN Admin , samir-djemoui Boutabba, , (2016), L’architecture domestique en terre entre préservation et modernité: cas d'une ville oasienne d'Algérie" Aoulef", Journal of Material and Environmental Science,, Vol:10, Issue:7, pages:3558-3570, Faculty of Science, Mohammed Premier University

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  • 2016
  • 2016

    L’architecture domestique en terre entre préservation et modernité: cas d'une ville oasienne d'Algérie" Aoulef"

    “Living in the desert seems paradoxical because it is by definition a place that life gives up. However, there, people live, since forever and knew, with ingenuity, take advantage of the few available materials to build houses, and take shelter there in an unfriendly climate” (Le Quellec, 2006). Since the dawn of time, the Algerian Southwest region was animated by a network of human settlements built according to the urban model of the Islamic medina and its traditional habitat of adobe; collective hamlets known as ksours. Being a place of transit of the great desert caravans, linking North Africa to the rest of the continent, the city of Aoulef was one of the old oasis cities of Algeria who has known over the centuries an urban and architectural development. It was characterized by a set of ksour separated by the line of foggaras and embellished by the landscape oases. Cradle of exceptional traditional earthen architecture, housing in the city of Aoulef presents a perfect site integration and adaptation to harsh climatic conditions. This paper attempts to learn about the typological and conceptual feature of the domestic architecture of this region, its ancestral building techniques, specific to the southern regions, as well as the current constructive alternatives adopted by the local people.

    Citation

    Hynda BOUTABBA , ADMIN Admin , MOHAMED Mili , ADMIN Admin , samir-djemoui Boutabba, , (2016), L’architecture domestique en terre entre préservation et modernité: cas d'une ville oasienne d'Algérie" Aoulef", Journal of Material and Environmental Science,, Vol:10, Issue:7, pages:3558-3570, Faculty of Science, Mohammed Premier University

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  • 2015-11-25
  • 2015-11-25

    THEORITICAL STUDY OF SOME MATERIALS USED IN REFRIGERATION SYSTEMS

    Récemment, les composés MnBi et MnSb sont parmi les matériaux utilisés pour produire des équipements de réfrigération. Cependant, les scientifiques ont effectué plusieurs études théoriques et des expérimentations afin d'étudier les propriétés structurales, électroniques, magnétiques et élastiques. Dans notre travail, nous avons étudié les propriétés structurales, électroniques, magnétiques et élastiques de MnBi et MnSb en utilisant la méthode FP-LAPW dans le cadre de la théorie de la fonctionnelle de la densité (DFT). Le terme du potentiel d'échange et de corrélation a été traité par deux différentes approximations LDA et GGA. Pour les Propriétés structurales, nous avons calculé les paramètres de la maille, le module de compressibilité. D’autre part, nous avons calculé la structure de bandes, la densité d'états totale et partielle et de la densité de charge et comparé les résultats obtenus avec d'autres calculs théoriques et expérimentales. On a calculé aussi le moment magnétique total et le moment magnétique de l’atome de manganèse. Enfin, on a défini aussi quelques paramètres élastiques comme le module de Young (E), le facteur d'anisotropie (A), le module de compressibilité adiabatique (Bs) et le module de cisaillement (G déformation résistance). La stabilité mécanique de ces matériaux a été traitée et exprimée a travers les constantes élastiques.

    Citation

    SABER Saad Essaoud , ADMIN Admin , ,(2015-11-25), THEORITICAL STUDY OF SOME MATERIALS USED IN REFRIGERATION SYSTEMS,Second international conference on mechanics “ICM2015”,Costantine univrsity (Algeria)

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  • 2015
  • 2015

    Multi-population cooperative bat algorithm for association rule mining

    Cum praesentium qui ipsum autem ab inventore pariatur asperiores adipisci. Ut ad a possimus natus beatae accusantium est consequatur. Aspernatur maxime dolorem sequi voluptas ducimus. Commodi pariatur recusandae est sint quam et aspernatur accusamus natus. Voluptatibus perferendis ea sint qui architecto natus ut consectetur maiores. Dolor iusto voluptatum. Dicta vel occaecati quia. Velit modi velit totam quibusdam sint maiores voluptate. Qui quo maxime ut aut facilis voluptas.

    Citation

    ADMIN Admin , nadjet kamel, habiba drias, ,(2015), Multi-population cooperative bat algorithm for association rule mining,Computational Collective Intelligence 2015,Madrid, Spain

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  • 2015
  • 2015

    Rheological behavior of an Algerian crude oil containing Sodium Dodecyl Benzene Sulfonate (SDBS) as a surfactant: Flow test and study in dynamic mode

    In order to improve the flow characteristics, this work aims to study the rheological behavior of the oil crude (coming from the oil field of Tin Fouye Tabankort/South Algeria) with and without additive friction reducing. An experimental study was performed by measuring the rheological characteristics by flow tests and dynamic mode (oscillation) at different temperatures (20 °C, 30 °C and 50 °C) using the rheometer AR2000. The temperature of the crude oil varies between these extreme values in the south of Algeria. For this, the effect of the shear rate, the temperature and the additive concentration of Sodium Dodecyl Benzene Sulfonate (SDBS) on the rheological parameters have been studied. The obtained results show that the crude oil exhibits a non-Newtonian behavior at a low shear rate which can be described by the Herschel–Bulkley model. It was also noted that the Newtonian behavior occurs at high values of the gradient of shear rate. The viscoelasticity character of the crude oil by identifying of the elastic modulus (G′) and the viscous modulus (G″), has indicated that the rheological properties of crude oil were significantly influenced by the additive.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, BrahimSafi, , (2015), Rheological behavior of an Algerian crude oil containing Sodium Dodecyl Benzene Sulfonate (SDBS) as a surfactant: Flow test and study in dynamic mode, Journal of Petroleum Science and Engineering, Vol:133, Issue:, pages:184-191, Elsivier

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  • 2015
  • 2015

    Rheological behavior of an Algerian crude oil containing Sodium Dodecyl Benzene Sulfonate (SDBS) as a surfactant: Flow test and study in dynamic mode

    In order to improve the flow characteristics, this work aims to study the rheological behavior of the oil crude (coming from the oil field of Tin Fouye Tabankort/South Algeria) with and without additive friction reducing. An experimental study was performed by measuring the rheological characteristics by flow tests and dynamic mode (oscillation) at different temperatures (20 °C, 30 °C and 50 °C) using the rheometer AR2000. The temperature of the crude oil varies between these extreme values in the south of Algeria. For this, the effect of the shear rate, the temperature and the additive concentration of Sodium Dodecyl Benzene Sulfonate (SDBS) on the rheological parameters have been studied. The obtained results show that the crude oil exhibits a non-Newtonian behavior at a low shear rate which can be described by the Herschel–Bulkley model. It was also noted that the Newtonian behavior occurs at high values of the gradient of shear rate. The viscoelasticity character of the crude oil by identifying of the elastic modulus (G′) and the viscous modulus (G″), has indicated that the rheological properties of crude oil were significantly influenced by the additive.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, BrahimSafi, , (2015), Rheological behavior of an Algerian crude oil containing Sodium Dodecyl Benzene Sulfonate (SDBS) as a surfactant: Flow test and study in dynamic mode, Journal of Petroleum Science and Engineering, Vol:133, Issue:, pages:184-191, Elsivier

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  • 2015
  • 2015

    Rheological behavior of an Algerian crude oil containing Sodium Dodecyl Benzene Sulfonate (SDBS) as a surfactant: Flow test and study in dynamic mode

    In order to improve the flow characteristics, this work aims to study the rheological behavior of the oil crude (coming from the oil field of Tin Fouye Tabankort/South Algeria) with and without additive friction reducing. An experimental study was performed by measuring the rheological characteristics by flow tests and dynamic mode (oscillation) at different temperatures (20 °C, 30 °C and 50 °C) using the rheometer AR2000. The temperature of the crude oil varies between these extreme values in the south of Algeria. For this, the effect of the shear rate, the temperature and the additive concentration of Sodium Dodecyl Benzene Sulfonate (SDBS) on the rheological parameters have been studied. The obtained results show that the crude oil exhibits a non-Newtonian behavior at a low shear rate which can be described by the Herschel–Bulkley model. It was also noted that the Newtonian behavior occurs at high values of the gradient of shear rate. The viscoelasticity character of the crude oil by identifying of the elastic modulus (G′) and the viscous modulus (G″), has indicated that the rheological properties of crude oil were significantly influenced by the additive.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, BrahimSafi, , (2015), Rheological behavior of an Algerian crude oil containing Sodium Dodecyl Benzene Sulfonate (SDBS) as a surfactant: Flow test and study in dynamic mode, Journal of Petroleum Science and Engineering, Vol:133, Issue:, pages:184-191, Elsivier

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  • 2015
  • 2015

    Effet d'un agent tensioactif sur le comportement rhéologique d'un pétrole brut Algérien

    Différentes méthodes expérimentales de réduction de la viscosité du pétrole brut ont été étudiées pour améliorer les propriétés d'écoulement. Dans cette étude, nous avons utilisé du Toluène pour réduire la viscosité. Les essais rhéologiques ont été réalisés en utilisant le rhéomètre AR2 ; de TA-Instruments à différentes températures 10°C, 15 °C et 20°C. Plusieurs concentrations de l'additif ont été testées, 2%, 3% et 5%. Les points expérimentaux des courbes d'écoulement du pétrole brut montrent un comportement non-newtonien qui peut être décrit par la loi Herschel-Bulkley. Les résultats expérimentaux montrent que la température influe considérablement sur l'évolution des courbes d'écoulement et provoque une diminution de la viscosité apparente du pétrole brut. Cette étude montre que le Toluène utilisé a un effet significatif sur la réduction de la viscosité apparente de pétrole brut algérien. Les résultats sont présentés et discutés.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, ,(2015), Effet d'un agent tensioactif sur le comportement rhéologique d'un pétrole brut Algérien,CFM 2015-22ème Congrès Français de Mécanique,France

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  • 2015
  • 2015

    Effet d'un agent tensioactif sur le comportement rhéologique d'un pétrole brut Algérien

    Différentes méthodes expérimentales de réduction de la viscosité du pétrole brut ont été étudiées pour améliorer les propriétés d'écoulement. Dans cette étude, nous avons utilisé du Toluène pour réduire la viscosité. Les essais rhéologiques ont été réalisés en utilisant le rhéomètre AR2 ; de TA-Instruments à différentes températures 10°C, 15 °C et 20°C. Plusieurs concentrations de l'additif ont été testées, 2%, 3% et 5%. Les points expérimentaux des courbes d'écoulement du pétrole brut montrent un comportement non-newtonien qui peut être décrit par la loi Herschel-Bulkley. Les résultats expérimentaux montrent que la température influe considérablement sur l'évolution des courbes d'écoulement et provoque une diminution de la viscosité apparente du pétrole brut. Cette étude montre que le Toluène utilisé a un effet significatif sur la réduction de la viscosité apparente de pétrole brut algérien. Les résultats sont présentés et discutés.

    Citation

    DJAMAL EDDINE Djemiat , ADMIN Admin , ADMIN Admin , Abdelhamid Safri, Abdelbaki Benmounah, ,(2015), Effet d'un agent tensioactif sur le comportement rhéologique d'un pétrole brut Algérien,CFM 2015-22ème Congrès Français de Mécanique,France

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  • 2014-05-11
  • 2014-05-11

    Dehydrated chicory pulp as an alternative soluble fibre source in diets for growing rabbits

    Alimentation du lapin en croissance en utilisant des sources non conventionnelle, pulpe de chicorée qui est un coproduit industriel.

    Citation

    Hocine GUERMAH , ADMIN Admin , , (2014-05-11), Dehydrated chicory pulp as an alternative soluble fibre source in diets for growing rabbits, World Rabbit Science ( WRS), Vol:22, Issue:144, pages:6, World Rabbit Sci.ence

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  • 2013
  • 2013

    The Impact of Colonial Architectural and Urban principles on housing and Urban planning of the current Algerian Cities.Case of M’sila

    Architecture is the mirror through which we look at a society, its specificities, culture and identity. However in Algeria, like everywhere else in the Arab world, urban architecture generally and the domestic architecture in particular are at the crossroads, between the anvil of the cultural identity and the hammer of modernity. Due to the colonization, the Indigenous urban and domestic models of Hodna region, specifically the city of M'sila- considered to be like antiquated, exceeded and retrograde by the political elite- have evolved to give models similar to those of western colonial culture - currently recognized as contemporary and international in the direction of modern and modernistic. However, domestic models transmitted from the French colonial civilization did not reflect the identity of the Algerian user and his way of living. The spatial practices were in disagreement with the social practices. The present paper aims to show the imprint left by the colonial city on the current Algerian city. It also attempts to show with which conceptual gymnastics, M’silis adopt these colonial architectural spaces so that they answer as well as possible to their way of life, their culture and their modern aspirations

    Citation

    Hynda BOUTABBA , ADMIN Admin , Abdaallah Farhi, , (2013), The Impact of Colonial Architectural and Urban principles on housing and Urban planning of the current Algerian Cities.Case of M’sila, Courrier du savoir scientifique et technique., Vol:17, Issue:, pages:61-70, universite de Biskra

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  • 2013
  • 2013

    Logique de la spatialité domestique savante dans la théorie architecturale: Un parcours en dents de scie,

    En raison de son universalité, l’espace domestique a toujours été sujet de prédilection pour la recherche architecturale. Son façonnement a été, depuis l’aube des temps assujetti aux caractéristiques et idéologies qui ont gouverné l’époque de son engendrement, ce qui a suscité à travers les différentes périodes historiques, de nombreux glissements conceptuels. Le but de ce papier est d’illustrer quelques uns de ces glissements, en cernant la nature propre de la spatialité domestique savante, spécifiquement celle des villas de banlieue et de villégiature. Face aux nombreuses transformations, cette anthologie ne peut être que fragmentaire. Nous allons donc suivre des itinéraires raccourcis et privilégier certains angles d’observation. La classification chronologique sera définie par rapport au Mouvement Moderne, vu qu’il a constitué une étape de dislocation très symptomatique dans l’histoire de l’architecture.

    Citation

    Hynda BOUTABBA , ADMIN Admin , Abdallah Farhi, , (2013), Logique de la spatialité domestique savante dans la théorie architecturale: Un parcours en dents de scie,, Courrier du savoir scientifique et techniqu, Vol:16, Issue:, pages:9-16, Université de biskra

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  • 2010
  • 2010

    Modélisation et Surveillance Thermique d'une Machine Asynchrone on prend on compte les Effets no Linière

    Le but de cet article est de visualisé l'effet des pertes variable qui augmentent avec la charge et les pertes constantes (pertes fer) sur le comportement thermique de moteur asynchrone. La modélisation est basée sur la théorie de dissipation de puissance, de transfert de chaleur et du taux de croissance de la température au stator et au rotor, en prenant en compte l’effet de la vitesse sur les échanges. En développement des machines électriques en général, et les moteurs asynchrones en particulier, la température limite est un facteur principal affectant l'efficacité de la conception globale. Puisque le chargement conventionnel des moteurs asynchrone est souvent très chère, l'estimation de l'augmentation de la température par des outils de modèle mathématique et d'expériences informatiques devient de plus en plus importante. Ensuite on a utilisé notre model pour faire une surveillance thermique de chaque enroulement du moteur. Les résultats trouvés sont en bonne concordance avec des résultats des articles et expérimentales. Mots clés : MAS, Modélisation Thermique, Pertes fer, Transfert de Chaleur, Température Limite, Surveillance Thermique.

    Citation

    ASSAM Zorig , ADMIN Admin , ,(2010), Modélisation et Surveillance Thermique d'une Machine Asynchrone on prend on compte les Effets no Linière,International Conference on Power Electronics and Electrical Drives,ALGERIA

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  • 2009
  • 2009

    Subsistence Living and Eco-Positive Behaviour: Two Diametrically Opposed Concepts? A Case Study of Farmers’ Perspectives in Sefiane, Algeria

    This study focuses on the relationship between land degradation and human activities in a semi-desert region, the area of Sefiane in Algeria, whose inhabitants are typically rural farmers and agro-pastoralists depending almost exclusively on their natural environment for subsistence. The study aimed at determining the Sefiane community’s perceptions of the impact of desertification and land degradation on their community and to identify how this affects their way of life and means of survival. The study has shown that the population have a strong desire to be assisted in the development of guidelines for environmental education initiatives that would enable them as a community to deal with desertification and land degradation in an attempt to relieve poverty and develop a more sustainable lifestyle. The proposed environmental education program should not be limited to the development of biophysical resources but must include also the support of societal and personal resources and capacities that are inherent to the community. Keywords: Desertification, land degradation, rural farmers, sustainable development, environmental education.

    Citation

    ADMIN Admin , Bouazid Tayeb , Cheryl lroux UNISA(University of South Africa), , (2009), Subsistence Living and Eco-Positive Behaviour: Two Diametrically Opposed Concepts? A Case Study of Farmers’ Perspectives in Sefiane, Algeria, Arab Gulf Journal of Scientific Research, Vol:27, Issue:1, pages:59- 69, ISSN: 1985-9899 e ISSN: 2536-0051 Emerald Publishing

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  • 2006
  • 2006

    Simulation du Contrôle non destructif par capteurs à Courants de Foucault sur des Pièces Cylindriques Amagnétiques

    On propose dans cet article une approche de simulation par la méthode des éléments finis pour la concrétisation des défauts qui peuvent subsistés sur pièces cylindriques amagnétiques . le contrôle se fait par la mesure l'impédance du capteurs , cette dernière varie lors du passage du capteur au voisinage du défaut, car la trajectoire des courants de Foucault est perturbé par la présence de défaut surfacique .

    Citation

    ADMIN Admin , Abdelhak ABDOU , ,(2006), Simulation du Contrôle non destructif par capteurs à Courants de Foucault sur des Pièces Cylindriques Amagnétiques,4th International confrence of Electrical Engineering,Batna

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  • 10-11 January 2024
  • 10-11 January 2024

    Valorization And Use Of Phycocyanin From Spirulina Platensis (Arthrospira) In Cosmetics

    Our work focused on the study and comparison of the effect of spirulina and/or its extract PC in cosmetic preparations (balms, creams and soaps). The results of the physicochemical tests of spirulina have shown that the latter was grown in an alkaline medium, it is fat and rich in metals, cartonoids and chlorophyle. On the other hand, we tested the addition of additives such as βCD, vegetable fiber and clay which is a natural product used for centuries, for the face, in particular, has become very important in our routine; in balms, creams and soaps formulated on the antioxidant and antibacterial effect. The results showed that the addition of additives separately or simultaneously in PC-based cosmetic formulations preserves and increases the antiradicalar and antibacterial activity of the PC even at very low concentrations in cosmetic preparations, This results in a good anti-wrinkle and stain-repellent effect on volunteers who have tested soap and prepared creams. The prepared cosmetic formulations are stable over time, and the sensory evaluation on the creams and balms prepared was good. Keywords: Arthrospira platensis, spirulina, phycocyanin, additives, anti-wrinkle, stain remover, natural, soap.

    Citation

    Salima ZIDANE , ADMIN Admin , ,(10-11 January 2024), Valorization And Use Of Phycocyanin From Spirulina Platensis (Arthrospira) In Cosmetics,International Conference on Material Chemistry and Sustainable Development (CM2D’23),Setif

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