Elie I Moussalli, s kawar
الجامعة الأمريكية في بيروت · لبنان
Maizia Mokhtaria
كلية العلوم الدقيقة والاعلام الآلي-جامعة عبد الحميد بن باديس مستغانم · الجزائر
Le principe de ce travail est étudier le problème de la croissance et l oscillation des polynômesdi¤érentiels dans le plan complexe, on a montré sous certaines conditions que le polynômedi¤érentiel possedent les mêmes propriérés des solutions, d une manière analogue, on a étudiele même problème pour les polynômes des solutionsgf = d1f1 + d2f2;lorsque f1 et f2 ne sont pas solutions de la même équation.
Asma Suleiman Tillawi, Leila Harmoush
مدرسة الآداب والعلوم-الجامعة اللبنانية الأميركية · لبنان
This study explored the perceived role of academic deans in three private universities in Lebanon. The inquiry, based on four research questions, focused on the academic deans, department chairpersons, and faculty members' perceptions of the dean's management leadership role. Leadership differences by gender were also emphasized. The methodology of data collection included: A review of documents, semi-structured interviews with seven academic deans, a questionnaire answered by a sample of 80 faculty members and 20 chairpersons, and a review of anecdotal accounts written by the chairs and faculty members. The researcher reviewed and analyzed the results by synthesizing and comparing the themes and responses of the three categories of participants to emphasize congruency or discrepancy of perceptions. Analysis of the findings showed that participants' perceptions moderately agreed on their academic dean's management leadership role. The deans' perceptions of deanship reflected their performance of role flavored with the ideal of academic leaders expectations. The slight incongruence of perceptions did exist to a certain extent because department chairs are in a position that is closer to academic deans than faculty members and thus have more critical perceptions of the dean's role than faculty members. Female deans were perceived more positively than male deans on faculty and program development, fiscal management, and conflict management. Male deans were perceived more positively than female deans on vision and goals, communication, and management variables. Male leadership is viewed as more directive and autocratic and female leadership as more participatory and democratic.
Mohamed Amine Benbaara, Mostefa Benadda, Walid Mokhtari
كلية اللغات والاداب-جامعة ابن خلدون – تيارت · الجزائر
This study investigates the impact of reading short stories on the communication skills of third-year English language learners at Ibn Khaldoun University of Tiaret, Algeria, employing a qualitative approach. Data were gathered through a questionnaire to explore student experiences and perceptions regarding the use of short stories for communication skill development. Results reveal that students view reading short stories as effective for enriching vocabulary, enhancing contextual understanding of grammar, and fostering critical thinking skills, all of which contribute significantly to improved communication abilities. The study suggests that integrating short stories into the English language curriculum offers valuable opportunities for learners to enhance their communication skills in an engaging and stimulating manner.
Kamel Tablennehas, Mustapha Chellali
كلية العلوم-جامعة سعد دحلب - البليدة · الجزائر
Abderraouf Redjal, Nassima Seghiri , Salah Maameri
كلية العلوم والعلوم التطبيقية-جامعة العربي بن مهيدي - أم البواقي · الجزائر
L'Objectif essentiel de ce travail est de présenter une étude ducomportement dynamique d'un véhicule roulant poursuivant une pistequelconque, comprenant une suspension traditionnelle dite passive composéd'un support parallèle d'un ressort plus amortisseur au cours du déplacementdu véhicule, ce dernier est existé par des fonctions d'excitations trèsreprésentatives du profil de la route, qui sont échelon unitaires, bruit blancintégré, bosse douce et profil spéciale.Le système de véhicule traité dans ce modeste travail est : le systèmequart de véhicules (à 2-ddl). Ce système de véhicule (à 2-ddl) à suspensionpassive est décrit par de modèle mathématique.Ce modèle est développer par l'approche d'équilibre des forces dite loide Newton, qui permettra de mieux comprendre la physique et la distributiondes efforts.Le modèle mathématique est développé dans l'espace d'état qui est l'unparmi plusieurs types de modèles de présentation.Une étude de performance des différents types de suspension est élaboréemoyennant la considération de critère d'optimisation quadratique. Il est pris encompte comme critère de performance de la tenue de route (sécurité deconduite) et le confort.L'amélioration du comportement dynamique du véhicule à suspensionpassive est atteinte par l'application des composantes de la suspension defaçon soigneuse afin de fournir la meilleure performance
Muath Abu Sadah , Mohammad Hashem Almanasra, عصام الخطيب
كلية الدراسات العليا-جامعة بيرزيت · فلسطين
Similar to many Palestinian communities, Yatta area located in the southern part of the West Bank receives a limited quantity of water. The area has more than 70,000 inhabitants, more than 37,000 dunums of agricultural land planted with different types of crops in addition to different commercial and industrial activities (Yatta municipality, 2015). The general objective of this research is to estimate the potential amount of total direct runoff from Yatta watersheds to be used in the agricultural lands and to evaluate its impact on the socio-economic situation in the study area. In this research, rainfall received on Yatta area including the amount and variation was analyzed using statistical methods. When the standard deviation values of annual rainfall data were examined, their values were found to be far away from the mean. This reflects the variability of annual rainfall data during the long analysis period. This research focused on estimating the potential amount of rainfall which could be collected from watersheds within the boundary of the area to be used for enhancing the agricultural lands in the area. The water would help improve crop yields, family income, create jobs and stop the deterioration of the green cover of the city. For this reason, a watershed model was developed using the WMS and the HEC-HMS applications. Accordingly, the rainfall distribution, evapo-transpiration, and physical characteristics of the watersheds were defined. The watershed in Yatta area and the characteristics of this watershed was defined. WMS model was used to define and delineate this watershed and divide it to five sub basins using the Digital Elevation Model (DEM), land use, and soil type for Yatta area. Land use and soil type were created using the Geographical Information System (GIS). The boundary of Yatta watershed and its sub subbasins in addition to their physical properties are saved and exported HEC-HMS. This model was used to simulate the watershed; accordingly, two models were developed based on hourly rainfall data for Yatta area in 2014/2015 rainy season. As a result, the runoff coefficient was estimated at (1.6 - 2.4) % which is considered very low due to the low intensity of rainfall as well as its annual amount. The analysis concluded that an average of 90,000 m3 /yr of storm water could be collected and stored in earth pools and cisterns at different locations within the boundary of the watersheds. This amount can be a supplementary source to irrigate around 300 dunums of olives, almond and grape trees in addition to more than 60 dumuns of vegetables. Therefore, this study proved that storm water can still be considered as a potential source of water which could contribute to solving water problems and improving the socio-economic situation.
امينة صالحي, سلیم العمراوي
كلية العلوم الاقتصادية والتجارية وعلوم التسيير-جامعة العربي بن مهيدي - أم البواقي · الجزائر
تهدف هذه الدراسة إلى قياس أثر تقلبات العوائد النفطية على متغيرات السياسة المالية المتمثلة في الإيرادات والنفقات العامة ورصيد الميزانية في الجزائر، بالاعتماد على بيانات سنوية للفترة الممتدة بين 1990-2015 ولتحقيق هذا الهدف تم استخدام التكامل المشترك لأنجل غرانجر.توصلت الدراسة إلى أنه توجد علاقة تكامل مشترك في المدى الطويل بين العوائد النفطية ومتغيرات السياسة المالية، أما بالنسبة لاختبار السببية، فتوصلنا لعدم وجود علاقة سببية في الاتجاهين، بين العوائد النفطية والنفقات لعامة، وبين العوائد النفطية والإيرادات العامة، أما بين الإيرادات النفطية ورصيد الموازنة العامة فأثبتت الدراسة وجود علاقة سببية في اتجاه وحيد، تتجه من العوائد النفطية إلى رصيد الموازنة العامة.
كمال بنمارس , نورة صيد
كلية العلوم الإنسانية والاجتماعية-جامعة 8 ماي 1945 قالمة · الجزائر
شهدت الدولة العباسية عصرها الذهبي في عهد مؤسسها الخليفة أبيجعفرالمنصورالذييعود له الفضل في تثبيت دعائم الدولة منخلال انجازاته العظيمة علىالمستوىالاجتماعي والثقافيوالاقتصادي،فضلا علىالمستوىالعمراني،حيثاختارالعباسيينمكاناً ملائما للاستقرار فكانت بغداد عاصمتهم وكعبةللعلماء و الشعراء الذين وجدواكلالتحفيزات منّطرف الخليفة، وبالتالي ازداد ابداعهم وكثرت مؤلفاتهم خصوصا وأن المنصور كان من رواد العلم والمشجعينله.
محمد دحماني, نسرين آيت موهاب, نوال بن زريق
كلية العلوم الاجتماعية والإنسانية-جامعة زيان عاشور - الجلفة · الجزائر
