Ahmed Hassam , Amin Med Mkedder , Karim Benameur, Kouider Bouchakour

كلية التكنولوجيا-جامعة أبو بكر بلقايد - تلمسان · الجزائر

Le présent rapport résume notre travail dans le cadre du Projet de Fin d’Études qui a comme objectif la simulation et la supervision de quarte stations qui font partie du système MPS500 de FESTO, afin de développer un nouveau système variant. Ce dernier se compose de la sous station de Distribution associée à la sous-station de Testing et la sous-station de Hand ling associée à la sous-station de Livraison. Après la conception du système on va modéliser et programmer le fonctionnement du système via le logiciel de programmation STEP7. La dernière phase est le développement d’un système de supervision via à l’outil WinCC de Siemens.

حياة مزيان , نعيمي توفيق

معهد الحقوق والعلوم السياسية-المركز الجامعي صالحي أحمد - النعامة · الجزائر

بن حوة نسرين, بوطورة فضيلة

كلية العلوم الاقتصادية، التجارية وعلوم التسيير-جامعة العربي التبسي - تبسة · الجزائر

Khadidja Griche, Rachida Simon

كلية الآداب واللغات الأجنبية-جامعة باتنة 2 - الشهيد مصطفى بن بولعيد · الجزائر

Abdelwahid Abidi, Kadidja Zouini

كلية الآداب واللغات-جامعة أحمد دراية - أدرار · الجزائر

During the Ottoman era Algeria was among the most powerful states. It also had a special place in the Ottoman Empire. At that time Algeria had very powerful Fleet which abled her to control the Mediterranean Sea and to establish political and commercial relations with most of the world countries and hold several treaties with them. Her strong naval fleet contributed in defding the area and also the interest of the Islamic world and confronting the European colonization . since many cturies the European Pirates was distressed and were horrified because of the Algerian naval fleet and her brave m this situation obliged the European governmts to negotiate for the peace and safety of the of their ships in the Mediterranean sea. From here the dispute betwe Algeria and Britain started about the supremacy so Algeria wanted to defd and to save her interests in the area whereas Britain asked for new glory in the area in order to reach her goal Britain waged many Expeditions against Algeria in the 18th ctury one of these expectations was the siege of Algiers by Lord Exmouth on 27th August 1816 .

سمر رمزي مكارم , كامل غالي

كلية مارون سمعان للهندسة والعمارة-الجامعة الأمريكية في بيروت · لبنان

A combined photovoltaic-thermal (PV-t) panel produces simultaneously electricity and heat from one integrated component to utilize effectively the solar energy by achieving higher PV electrical efficiency and making use of the dissipated heat energy for heating applications. The modeling of the system used the following models: a space model used by Yassine et al. (2012) and validated using TRNSYS, a desiccant model developed and validated by Beccali et al. (2004) and an evaporative cooler model implemented by Kinney (2004). As for the PV-t model, a transient mathematical model for the PV-t was developed based on the formulation of Kumar (2011) to predict its performance for given environmental conditions and flow rate of ambient air that cools the PV-t panel. The model was validated experimentally and showed good agreement in predicting exit air stream temperature and electrical output of the PV-t. The models were integrated in a heating application for a typical office space in the city of Beirut to provide the office needs for electricity, heating during winter season, and dehumidification and evaporative cooling during the summer season. The optimization problem was formulated based on the electric energy consumption of the office, the thermal energy consumption of the desiccant system, and the electrical and thermal energy extracted from the PV-t panels, with the appropriate constraints associated with the different models, and those that satisfy the thermal comfort criteria (Predicted Mean Vote value between -0.5 and 0.5). The optimization problem is solved on an hourly basis for the period of occupancy from 7 a.m. till 5 p.m., and only ventilation is set on during the night. The Genetic Algorithm was used to optimize the system’s performance to minimize the yearly office energy (electrical and heat) consumption, and ensure the operation at minimum cost while maintaining thermal comfort inside the space. The decision variables being the air mass flow rate and the desiccant regeneration temperature,

Messaoud Chakir, Mohamed Tadjine, Salah Eddine Laouati

المدرسة الوطنية المتعددة التقنيات - الجزائر · الجزائر

Dans ce travail, on étudie le contrôle d'une formation utilisant une stratégie de structure virtuelle sur un groupe de robots mobiles. Les raisons de l'utilisation de cette méthode sont le fait qu'elles introduisent une robustesse supplémentaire à la stabilité de la formation en ce qui concerne les perturbations par rapport aux approches typiques de leader-suiveur. L'applicabilité de l'approche étudiée est présentée dans les résultats de la simulation.

حياة شماني, شيماء بوفيان, هاني فارس

كلية العلوم الاجتماعية والإنسانية-جامعة الجيلالي بونعامة - خميس مليانة · الجزائر

حبيبة شعبان, فاطمة عتو , محمد مزاينـي

كلية الآداب واللغات-جامعة الجيلالي بونعامة - خميس مليانة · الجزائر

Berrichi M , Belkhodja Yacine Karim

كلية العلوم الطبيعية والحياة، علوم الأرض والكون-جامعة أبو بكر بلقايد - تلمسان · الجزائر

Contribution à la description anatomique du phytomère chez le genre Pistacia dela wilaya de Tlemcen.Le pétiole des pistachiers étudiés présente un arrangement tissulaire composé de l'extérieurvers l'intérieur de la cuticule, de l'épiderme, de Collenchyme, de parenchyme cortical, desclérenchyme, de phloème et du xylème. La feuille présente des stomates de typeParatétracytique chez Pistacia atiantica et pistachia vera et de type Anisocytique chezpistacia terebinthus. L'ostiole d'une taille comprise entre 1,5 à 2 tm de largeur chez lePistacia atiantica et 1 j.tm de largeur dans le cas de pistacia vera, 1,5 tm de largeur chezPistacia terebinthus. Les cellules de garde ont une taille allant de 1 à 3 .im, les stomates ontrespectivement une densité de 80 à 88, 90 à 94 et 105 à 110 stomates chez Pistacia atiantica,pistacia vera, Pistacia terebinthus.Mots clés : Pistachier, feuille, pétiole, stomate, arrangement tissulaire.Abstract: Contribution to the anatomical description ofphytomer in the genus Pistacia ofthe wilaya of Tlemcen.Pistachio petiole tissue studied arrangement presents compound from outside to inside of thecuticle, epidermis, the collenchyma, cortical parenchyma, scierenchyma, xylem and phloem.The leafhas stomata in Pistacia atlantica Paratétracytique kind and Pistachia vera andAnisocytique kind in pistacia terebinthus. The ostioles a size between 1.5 to 2 microns inwidth and 1 .mu.m the Pistacia atiantica width in the case ofPistacia vera, 1.5 microns inwidth terebinthus Pistacia. Guard ceils have a size ranging from January to March microns,respectively stomata density 80-88, 90-94 and 105-110 stomata in Pistacia atlantica, Pistaciavera, Pistacia terebinthusKeywords: Pistachio, leaf, petiole, stoma, tissue arrangement.ùL