هديل سلمان علي عوده, وجيه ضاهر

كلية الدراسات العليا-جامعة النجاح الوطنية · فلسطين

This study aimed to determine the level of mathematical thinking skills and their relationship with mathematical beliefs of students in An-Najah national university from two specialties mathematics and teaching methods of mathematics.The study sample consisted of 220 students from the two specialties, mathematics and methods of teaching mathematics, at An-Najah National University, The participants in the sample were selected randomly, and the questionnaires were distributed in the second semester of the academic year 2015/2016. Two data collecting instruments were used in the study: mathematical thinking questions and a scale for measuring beliefs about mathematics, and validity and reliability tests were performed for each of the instruments. Independent T-tests،Anova and post-hoc Scheffé tests were used to answer the research questions. Pearson correlations were usedto find the relationships between mathematical thinking skills and mathematical beliefs.The study showed the following results:1-There were statistically significant differences at (α ≤0.05) for all sub-scales of mathematical thinking skills and sub-scales of students' beliefs about mathematics between the students from the two specialties.2-There were no statistically significant differences at (α ≤0.05) in the mathematical thinking skills and in the degree of students' beliefs attributed to gender3-There were no statistically significant differences at (α ≤0.05) in students' beliefs attributed to the specialty، while there were statistically significant differences at (α ≤0.05) in mathematical thinking in favor of mathematics specialty students.4-There were statistically significant differences at (α ≤0.05) between the sub-scales of mathematical thinking skills attributed to mathematics achievement in favor of students whose achievement (over 90%). At the same time, there were no statistically significant differences at (α ≤0.05) in the sub-scales of students' beliefs.5-The relationships between the sub-scales of mathematical thinking and the sub-scales of attitudes towards mathematics wee statistically significant at (α ≤0.05).The study recommended focusing on the development of mathematical thinking skills in the mathematics curriculum. It also recommends instilling the mathematical concepts more accurately. In addition, teachers should develop the appropriate beliefs of mathematics students in order to have appropriate attitudes towards learning mathematics.

Abdelli, Nassima Kali

كلية العلوم الاقتصادية والتجارية والإدارة-جامعة عبد الرحمان ميرة - بجاية · الجزائر

Au terme de ce travail qui a consisté à analyser les étapes du déroulement de traitement des et leur impact sur le résultat et la situation financière, au sein de l'EPE DIVIDUS CAPREF de Bejaia, ce qui nous a permet de constater des enregistrements des ventes a crédit qui a due a une augmentation de volume des créances ,qui a met l'entreprise sous la contraintes de ne pas recouvrir ses créances envers les différentes débiteurs et de classer ses créances comme des créances douteuse et qui ont pris par la suite le caractère d'irrécouvrable en engendrant des influence négatifs sur la situation de l'entreprise puisque le client est considéré comme un créateur de richesse pour l'entreprise

Nabila Kateb, Taher Guerram

كلية العلوم الدقيقة وعلوم الطبيعة والحياة-جامعة العربي بن مهيدي - أم البواقي · الجزائر

Pamela Hindi, Njaim Maria

كلية الحقوق والعلوم السياسية-جامعة سيدة اللويزة · لبنان

Political grief is a type of shared sadness that happens in the wake of perceived unfair or avoidable occurrences. It is a shared emotion that affects individuals, communities, and countries. The goal of the thesis is to research the psychological and emotional impacts of political mourning on individuals and communities, relate it to human rights, and look at how political grief manifests itself after a terrible incident. This thesis examines the idea of political grieving in Lebanon in the wake of the 2020 Beirut explosion, which resulted in more than 200 fatalities, tens of thousands of injuries, and 300,000 displaced people. The study emphasizes the value of offering emotional support as a component of human rights discourse and can offer insights into efficient actions and regulations to lessen the effects of such occurrences. Overall, by offering new insights on the nature of political grieving and its connections to key political and social issues, the thesis makes a contribution to the study of political science with a focus on human rights.

Bassou Oumessad, Bekkari Fouad, Laalmi Houria

كلية التكنولوجيات الحديثة للمعلومات والاتصال-جامعة قاصدى مرباح ورقلة · الجزائر

La classification est un problème qui est toujours ouverte pour la conception et l’implémentation des méthodes appliquées sur déférentes types des paramètres, l’objectif est d’avoir des résultats plus performants. Dans ce cadre notre travail de classification des feuilles des plantes se base sur l’analyse globale afin d’utiliser les moments invariants de Hu comme entrées à une méthode de classification basée sur l’apprentissage non supervisé qui est K-means.

شعوة الشراجي, طارق خاطر

كلية العلوم الاقتصادية والتجارية وعلوم التسيير-جامعة باتنة 1 - الحاج لخضر · الجزائر

ثروة الزهر, رنا احمد عبد الحسين

كلية الحقوق والعلوم السياسية والإدارية-الجامعة اللبنانية · لبنان

زهرة احمد عيسى, علي المقرشي

كلية الهندسة-جامعة السلطان قابوس · عمان

Project successes are always linked with their completion within budget. In many cases projects exceed their budget and suffer cost overrun. Telecommunications industry projects, much like other industries face the problem of cost overrun. This project.presents the results of a study conducted to identify factors causing project cost overrun in telecommunications projects. Respondents of this survey included personnel from clients and contractors involved in telecommunications projects in the Sultanate of Oman. According to the analysis results, 14 out of 37 factors were identified as major causes of project cost overruns: (1) changes in the scope of the project by the stakeholders and end users, (2) customer requirements and project scope are not clear, (3) poor risk management (4) improper planning, (4) long period between design and time of bidding/tendering or long tendering process, (6) improper communication between project teams, (7) insufficient dedicated staff allocated to projects, (8) delays in work approval, (9) project team members lacking experience and not having the required qualifications, (10) improper cost estimation at the beginning of the project, (11) unavailability of the right resources (expertise) to do project cost estimation, (12) poor user input and requirements gathering, (13) lowest bidding procurement method and (14) unavailability of change control process.Moreover, this study has investigated if there is an agreement in the ranking of causes of cost overrun between clients and contractors and it was found that there is a degree of agreement. Also, this study has investigated the association between company size and causes of project cost overrun. The results showed that there is not enough evidence to suggest that the causes of cost overrun differ significantly according to company size.Finally, a sample project with cost overrun was selected from the telecommunications industry in the Sultanate of Oman to be a case study to identify the causes of cost overrun.

طارق يوسف حسن جابر, عارف خليل ابو عبد, عبدالمعز عبدالعزيز حريز

كلية الدراسات العليا-الجامعة الاردنية · الاردن

Amel Boucheffa , M.Mokhtari, T.Rezoug

معهد الطيران ودراسات الفضاء-جامعة سعد دحلب - البليدة · الجزائر

Les vents du cisaillement sont très dangereux pour l'aviation lorsque l'aéronef est proche du sol à faible vitesse, c'est-à-dire, à l’atterrissage ou au décollage. Cela peut entraîner une perte soudaine de portance, autrement dit provoquer un décrochage de l'avion et le faire s'écraser au sol, si le pilote n'a pas eu le temps de réagir ou si ses manœuvres ont été vaines. Dans ce mémoire, des différents type de cisaillement du vent ont été calculé, sur l’aérodrome d’Alger, à partir du modèle à haute résolution AROME utilisé en opérationnel à l’Office National de la Météorologie. Ce nouveau produit, offre une information supplémentaire, pour le prévisionniste, concernant la variation de la force et de la direction du vent sur l’Aérodrome d’Alger. Ceci permettra à terme d’affiner la qualité de la prévision pour cet aérodrome (TAF).