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Etude de métier Jacquard processus et automatisme
(2026) KHELIFI Mohammed Bilal; ZADI Chaima; YOUNES Mohammed
Ce mémoire traite de l'automatisation du métier à tisser Jacquard, un système mécanique du
XIXe siècle reposant sur une logique binaire à cartes perforées, considéré comme l'un des
précurseurs de l'informatique moderne. À travers une approche alliant histoire technique, analyse
mécanique et conception électronique, nous avons modélisé et simulé un système de commande
à base de microcontrôleur PIC16F877A capable de reproduire et d'améliorer le fonctionnement
du métier Jacquard traditionnel, ouvrant ainsi la voie à sa réalisation sous forme de prototype
intelligent.
Caractérisation in vitro du potentiel probiotique de souches de bactéries lactiques isolées de produits laitiers traditionnels
(2026) BENALI Mohamed kheir Ellah; BOUZID Daho Mokhtar; KHALADI Walid; DJOUAD Mokhtar Eddine
This study focuses on the isolation, characterization, and evaluation of the
technological, functional, and probiotic properties of lactic acid bacteria (LAB) isolated from
traditional Algerian fermented products. A total of 46 isolates were obtained from eight types
of products collected in five regions (Aïn Témouchent, Chlef, Biskra, Oran, and Touggourt).
Morphological, biochemical, and physiological characterization confirmed their belonging to
the LAB group. API gallery identification revealed several species, including
Lacticaseibacillus rhamnosus (LA2), Lactiplantibacillus plantarum (LB4),
Levilactobacillu brevis (VC2), Lactococcus lactis subsp. cremoris (FA3), Leuconostoc spp.
(FA6 and LCT1), and Enterococcus faecium (LC8), reflecting the microbiological diversity of
traditional Algerian fermentations.
Evaluation of technological properties revealed variable proteolytic and acidifying
activity across strains, a complete absence of lipolytic activity, and heterogeneous
exopolysaccharide and biofilm production. Antioxidant activity, measured by the DPPH
assay, showed high inhibition rates for strains FO1 (93.5%), LB6 (93.4%), and FA1 (89.4%).
In vitro evaluation of probiotic properties demonstrated variable resistance to gastric
acidity (pH 2 and pH 3), digestive enzymes (pepsin and trypsin), and bile salts (Oxgall 0.1%,
0.3%, and 0.5%). Strains LB6, LC3, LA1, and FO1 distinguished themselves through overall
performance, confirming their probiotic potential. These results highlight the microbiological
richness of traditional Algerian fermented products and open perspectives for the
development of locally sourced probiotics.
ETUDE COMPARATIVE ENTRE BETON ORDINAIRE ET BETON FIBRE : REVIEW
(2026) YEKHLEF MOHAMED BADR EDDINE; BENIKHLEF MOHAMED AMINE; MOHAMMED BELHADJ Ahlem
This Master’s thesis presents a comprehensive and critical comparative review
between ordinary concrete (OC) and fiber-reinforced concrete (FRC), two fundamental
materials in modern civil engineering. The main objective is to analyze the impact of
incorporating various types of fibers on the physical, mechanical, and rheological
properties of the cementitious matrix. Although ordinary concrete exhibits high
compressive strength, its intrinsic limitations, such as low tensile strength and high
brittleness prone to crack propagation, restrict its performance. In Algeria, the application
of OC is strictly governed by national building codes including CBA 93, RPA 99 (Version
2003), and BAEL 91. The addition of fibers—whether metallic (steel, amorphous alloys),
synthetic (polypropylene, PVA, carbon), or natural (sisal, jute)—represents a major
advancement by acting as stress-transfer bridges within the material’s microstructure.
Through a structured methodological approach analyzing 25 recent scientific papers
(published in 2026 in top-tier international journals such as Elsevier and RILEM), this
work demonstrates that carbon and steel fibers yield the most significant improvements in
elastic modulus and tensile strength. Conversely, synthetic micro-fibers primarily optimize
early-age crack control and post-cracking ductility. However, the inclusion of fibers
systematically reduces fresh concrete workability, demanding the vital use of
superplasticizers to achieve adequate compaction. Ultimately, this study provides clear
technical and economic recommendations for the design of durable and seismic-resistant
structures in Algeria.
Dispositif de Surveillance de Température basé sur une carte Arduino UNO
(2026) BOUZOUINA Boualem; MEHIAOUI Chaimaa; AYACHE Choukria
This project aims to design and build a digital temperature controller based on an Arduino
UNO board. The system measures the local temperature using an LM35 sensor, an LCD
display, and alerting components, enabling system monitoring.
The device functions as an on/off thermostat: when the measured temperature exceeds a
predefined setpoint, a safety mechanism is activated. A relay automatically cuts power to the
connected heating element, and a red LED illuminates to indicate the alert status.
The project uses the Arduino IDE programming environment and is simulated using Proteus
software, allowing for functional validation of the circuit before its hardware implementation.
انعكاسات تطبيق الحوكمة على إدارة الجودة الشاملة دراسة ميدانية
(University of Ain Temouchent, 2026) علي سواكر; سناء أوكبدان; مراد إسماعيل
This study aimed to investigate the impact of applying corporate governance
mechanisms on enhancing Total Quality Management (TQM) practices by examining the
relationship between governance mechanisms—namely the Board of Directors, Audit
Committee, Internal Audit, External Audit, and Transparency and Disclosure—and TQM
practices within telecommunications companies.
To achieve the objectives of the study, the descriptive-analytical approach was adopted.
A structured questionnaire was employed as the primary instrument for data collection. The
study population consisted of employees of Djezzy and Ooredoo telecommunications
companies operating in Southern Algeria, specifically in the provinces of El Oued, El
M'Ghair, and Touggourt. The collected data were analyzed using SPSS Statistics (Version
26) and Microsoft Excel 2010. A range of descriptive and inferential statistical techniques was
employed, including Cronbach’s Alpha, descriptive statistics, normality tests, Pearson’s
correlation coefficient, simple and multiple linear regression analyses, and hypothesis testing.
The findings revealed a statistically significant positive effect of corporate governance
mechanisms on improving Total Quality Management practices. The results demonstrated
that the effective implementation of governance mechanisms enhances transparency,
accountability, internal control, and operational efficiency, thereby contributing to
continuous improvement and strengthening institutional performance. Furthermore, the
study identified statistically significant differences in respondents’ evaluations of TQM
practices attributable to certain professional and demographic characteristics.
Based on these findings, the study recommends strengthening the implementation of
corporate governance mechanisms within Algerian telecommunications companies,
improving transparency and control systems, and promoting a quality-oriented
organizational culture to enhance institutional performance, achieve organizational
excellence, and ensure long-term sustainability.