DJELLOUL Ladjel

KADRI Osema , MEKKI Med Amine, /

Caractérisation de matériaux des déchets entrants a la décharge, cas C.E.T de la wilaya de M’sila. Soutenu devant

DEHMECHE RIDHA , /, /

Etat de l’art sur la gestion des déchets environnemental. (Etude de cas de la wilaya de M’sila).

DEHMECHE RIDHA , /, /

Etat de l’art sur la gestion des déchets environnemental. (Etude de cas de la wilaya de M’sila).

Belkadi Aissa & Daoud Said , Belkadi Aissa & Daoud Said, Belkadi Aissa & Daoud Said

Étude corrélative de l’effet combiné de l’activation chimique et la nature du sable sur les propriétés physico-mécaniques d’un mortier.

Belkadi Aissa & Daoud Said , Belkadi Aissa & Daoud Said, Belkadi Aissa & Daoud Said

Étude corrélative de l’effet combiné de l’activation chimique et la nature du sable sur les propriétés physico-mécaniques d’un mortier.

BENCHRIF KHADIDJA et KHOUDOUR BASMA , BENCHRIF KHADIDJA et KHOUDOUR BASMA, BENCHRIF KHADIDJA et KHOUDOUR BASMA

COMPORTEMENT MÉCANIQUE DES SOLS TRAITES A LA CHAUX ET AUX LIANTS HYDRAULIQUES A COURT TERME

Abstract Foreign language teaching is not limited to verbal transmission; non-verbal communication plays a crucial role, particularly for primary school learners. This study focuses on the impact of the teacher's pedagogical gestures on improving oral comprehension (OC) in French as a Foreign Language (FLE) classrooms. Gestures are considered here not as spontaneous behavior, but as an intentional didactic tool capable of facilitating access to meaning. The central question of this research is to assess the extent to which the teacher's strategic use of gestures influences OC effectiveness among primary school learners. We adopted a qualitative and comparative methodology, based on the direct observation of OC sessions conducted by two FLE teachers. The analysis, out using a detailed observation grid, allowed us to quantify and qualify the typology of gestures used (iconic, regulatory, metaphorical) and to correlate their relevance with learners' comprehension performance. The results confirm our hypothesis: the study revealed a significant correlation between the richness and appropriateness of teacher gestures and improved learner comprehension scores. More specifically, iconic and regulatory gestures proved to be essential cognitive facilitators for overcoming difficulties related to oral fluency in young learners. In conclusion, this research positions pedagogical gestures as a fundamental didactic component that deserves explicit inclusion in the training of French as a Foreign Language (FLE) teachers, as they actively support memory, motivation, and semantic access in the classroom. Keywords: Pedagogical gesture, Nonverbal communication, Oral comprehension, FLE, Didactics, Beginning learners

Citation

djelloul ladjel , , (2025-12-24), The impact of pedagogical gestures on oral comprehension in French as a Foreign Language: A non-verbal tool for accessing meaning., Haut | ISSN: 0938 - 2216 | Issue 12 | 2025, Vol:23, Issue:23, pages:16, LADJEL DJELLOUL

Abstract: This study examines the integration of Information and Communication Technologies for Education (ICT) in the hybrid teaching model at Mohamed Boudiaf University of M'sila, Algeria. Based on a quantitative survey conducted with first-year Master's students in French Language, the research analyzes their perceptions of theaccessibility of digital platforms (such as Moodle) and the pedagogical effectiveness of the tools used. The results indicate an appreciation for the flexibility of the hybrid model but highlight major challenges related to technical accessibility and the clarity of online courses (68% of students consider online courses less explicit than face-to-face courses). A strong preference for traditional, print-based teaching formats was also observed (80% for in-person, 65% for print), highlighting a reluctance to fully embrace the hybrid format. These findings call for enhanced teacher training and improved technical support for students to optimize the effectiveness of hybrid teaching. In short, the results demonstrate a strong preference for in-person teaching, despite acknowledging certain advantages of the hybrid model. A critical analysis leads to recommendations for improving university digital tools. Keywords: ICT, Hybrid Teaching, E-learning, Digital Accessibility, Student Perception. Introduction :

Citation

djelloul ladjel , , (2025-12-11), ICT AND HYBRID TEACHING AT THE UNIVERSITY: TOWARDS A RECONCILIATION BETWEEN DIGITAL ACCESSIBILITY AND PEDAGOGICAL EFFECTIVENESS, Haut | ISSN: 0938 - 2216 | Issue 12 | 2025, Vol:23, Issue:23, pages:17, LADJEL DJELLOUL

Abstract: The self-compacting concretes (SCC’s) are characterized by their high fluidity so that they could be placed without any vibration. The effect of fillers addition on the behavior of SCC in fresh and hardened state is of great importance. This incorporation of marble powder aims to preserve the environ- ment and to widen its use in the future in SCC formulation. The present research experimental program examines the effect of the partial substitution of cement with marble powder on the characteristics of self-compacting concrete in fresh and hardened state. Thus, the marble powder (MP) was introduced into the composition of self-compacting concretes at dosages of 10%, 20% and 30%. Three water cement ratios (W/C) of 0.4, 0.5 and 0.6 were maintained for the studied mixtures. The reference one with 100% of cement served as a control concrete mix. Finally, it can be concluded that such valuation of the marble waste could be beneficial for self-compacted concrete formulation.

Citation

Noura DJEBRI , Larbi BELAGRAA , adel aissi , NASSIMA Bakir , djelloul ladjel , Saida BOUALLEG , ,(2025-05-12), Study of the behavior of eco-self compacting concrete based on marble powder addition,International Conference on Green Engineering (ICGE-25),University of Bordj Bou Arreridj

The use of self-placing concrete (SCC) in Algeria is relatively recent; the main interest in regards to rheological and mechanical properties is to optimize them for local materials and conditions in formulated SCCs |1-2].This research work presents the results of a study on the influence of inert mineral addition such as marble powder (MP) on the properties of fresh and hardened SCC

Citation

Larbi BELAGRAA , Noura DJEBRI , NASSIMA Bakir , adel aissi , djelloul ladjel , ,(2025-05-12), Study of thr behavior of edo-self compacting concrete based on marbre addition,ICGE,B B Arreridj university

Publishing research articles in international journals has become a precondition to PhD graduation in higher education. In the era of globalization, non-native English PhD students devote much scholarly attention to English writing for publication purposes to share and author their own academic researches for international journals. Thus, this paper aims to demystify the most important requirements of English writing for publication and draw some strategies to successfully publish written English manuscripts in international journals. Along this line of thought, a documentary analysis of 12 different research manuscripts of non-native English academics was undertaken. To cross-check the data, a questionnaire was directed to the manuscripts’ owners and the peer reviewers of journals. The findings reveal that manuscripts which are successfully accepted for publication have features related to both macro and micro criteria. The former includes the procedural strategies that allow manuscripts to be highly and immediately accepted from the first sight such as the originality or timeliness of the work, its direct relevance, appropriateness and interest to the journal targeted, and itseffective contributions and solutions to the new emerging era problems. The latter incorporates the specific details and segments that reviewers spot at the second sight such as maintaining coherent and cohesive texts, using authentic and well-cited references, providing relevant arguments, framing data to appeal to different audiences, discussing and synthesizing the results. Depending on these findings, a number of recommendations are provided to remediate the situation.

Citation

Karima LADJEL , souhila KHARKHACHE , djelloul ladjel , , (2023-01-08), English Writing For Publication In International Journals: Basic Criteria In Globalization Era, العمدة في اللسانيات وتحليل الخطاب, Vol:7, Issue:1, pages:667-682, جامعة محمد بوضياف المسيلة

ABSTRACT Self-Compacting concrete (SCC) is highly fluid and takes it is cast without vibration. This property can be obtained by using plasticizers and increase the volume of the paste (cement mixture) to ensure a good distribution of coarse aggregate. However, to ensure a sufficient volume of the cement mixture, there are two possibilities, the first is to increase the amount of cement, which results in a high amount on the economic level and the risk of cracks due to a large thermal expulsion, on the technical level. The second method is the use of various mineral additives, represented most of the time In by-products. The aim of this research work is to highlight the advantages of household waste such as glass bottles in self-compacted concrete. Suggested glass powder produced by crushing bottles less then (80 μm), on the properties of self-molding concrete. Different pourcentages were taken ((5, 10, 15 et 20 %) to formulate mixtures. The results showed a positive effect for glass powder with regard to the rheological and mechanical properties of concretes made with proportions ranging up to 20% of the weight of cement. Generally, it could be concluded that such use of waste glass powder could contribute to formulating senvironnmantal concrete within the same performances as conventional concrete. Keywords: Environmental concrte, Waste Glass powder addition, Rheological properties, Résistance

Citation

Larbi BELAGRAA , djelloul ladjel , ,(2022), STUDY OF THE PERFORMANCES OF A SELF COMPACTING CONCRETE BASED ON WASTE GLASS POWDER ADDITION,VI-International European Conference on Interdisciplinary Scientific Research August 26-27, 2022 / Bucharest,,Bucharest

Keywords (in English) Mortars, mechanical strength, Hardening, alkaline solutions, chemical activation Abstract (in English) The main qualities sought for a mortar are usually; the high compactness, good sealing or impermeability, better mechanical strength and long-term durability. The different methods of accelerating setting and hard-ening of the mortar as well as the desired characteristics are of great importance with regard to the use of mortars and their different applications in civil engineering. This work is a contribution to improving the properties of mortars at fresh and hardened state by differ-ent activation techniques in particular chemical alkaline activators method. The properties of chemically activated mortars using alkaline solutions (KOH and NaOH) at dosages of 0, 2 and 4% was investigated in this experimental program using a based cement matrix with dune sand and blended cement type CEM II/ B grade 42. The results obtained showed the beneficial effect of the chemical activation modes mainly, an improve-ment of the mechanical response (compressive strength) at young age and in the long term.

Citation

djelloul ladjel , Larbi BELAGRAA , moncef Zairi, , (2020), CHEMICAL ACTIVATION EFFECT ON THE MECHANICAL RESPONSE OF MORTARS BASED ON DUNE SAND, Mining science, Vol:27, Issue:27, pages:14, Scientific research Warclow university, Poland

The main qualities sought for a mortar are usually; the high compactness, good sealing or impermeability, better mechanical strength and long-term durability. The different methods of accelerating setting and hardening of the mortar as well as the desired characteristics are of great importance with regard to the use of mortars and their different applications in civil engineering. This work is a contribution to improving the properties of mortars at fresh and hardened state by different activation techniques in particular chemical alkaline activators method. The properties of chemically activated mortars using alkaline solutions (KOH and NaOH) at dosages of 0, 2 and 4% was investigated in this experimental program using a based cement matrix with dune sand and blended cement type CEM II/ B grade 42. The results obtained showed the beneficial effect of the chemical activation modes mainly, an improvement of the mechanical response (compressive strength) at young age and in the long term. Keywords: mortar, chemical activation, alkaline solutions, hardening; mechanical strength

Citation

Larbi BELAGRAA , djelloul ladjel , Moncif Zairi, , (2020), CHEMICAL ACTIVATION EFFECT ON THE MECHANICAL RESPONSE OF MORTARS BASED ON DUNE SAND, Mining science, Vol:27, Issue:27, pages:6171, www.miningscience.pwr.edu.pl