Khelifa Gaci, Sylia Hammiche , Yasmine Idir

كلية العلوم الإنسانية والاجتماعية-جامعة عبد الرحمان ميرة - بجاية · الجزائر

Les maladies chroniques ont acquis une place prédominante au rang des problèmes de santé, les plus préoccupants, parmi ces dernières on trouve l’insuffisance rénale chronique qui touches les reins, et les empêchent à fonctionner correctement. Les patients atteints d’IRC doivent absolument recourir à des traitements tels que l’hémodialyse pour survivre, c’est-a-dire cette maladie nécessite des séances de dialyse. Bien que cette maladie est douloureuse physiquement, mais elle engendre aussi des complications sur le plan psychologique. L’objectif de ce travail est d’étudier la dépression et le deuil chez les adultes hémodialysées , pour la persuasion de vérifier la fiabilité de notre hypothèse, deux outils de recueilles d’information sont mises en évidences : l’entretien clinique semi-directif et le test de Rorsc

Bennecer Badis, عبدالله ملوكي

كلية الرياضيات وعلوم الحاسب وعلوم المواد-جامعة 8 ماي 1945 قالمة · الجزائر

Dans cette thèse nous avons étudié la stabilité structurale des semiconducteurs à base de lithium et certaines propriétés en utilisant les deux méthodes ab–nitio ; la méthode linéaire des ondes planes augmentées (FP–LAPW) et celle du pseudopotentiel avec les ondes planes (PP-PW) dans le cadre de la théorie de la fonctionnelle de la densité (DFT).Le calcul de l’énergie totale de six phases candidates de LiBeP (cubique (F43-m), hexagonale (P6mmc), tétragonale (P4nmm), orthorhombique (Pnma) et hexagonale (P63mc) montre que la structure tétragonale est la plus stable. Par l’application de la pression hydrostatique ce matériau subit une première transition de phase vers la structure orthorhombique puis une autre transition vers la structure hexagonale (P63mc).Nos résultas obtenus sur les propriétés électroniques montrent que LiBeP est un semiconducteur à gap indirect dans les trois structures type Cu2Sb, MgSrSi et LiGaGe.Les spectres des parties imaginaires des éléments du tenseur diélectriques sont calculés et l’assignement des pics aux structures de bandes est faite.LiBeP est plus absorbant dans la direction c dans la structure MgSrSi pour toutes les fréquences.La variation du gap fondamental avec la pression est linéaire dans les deux structures Cu2Sb et MgSrSi par contre elle est non linéaire dans la phase hexagonale (LiGaGe) et change sa nature à 19,75 GPa.Dans le cadre de la théorie de la perturbation de la fonctionnelle de la densité (DFPT) en conjonction avec la méthode du pseudopotentiel avec les ondes planes (PP-PW) nous avons calculé les spectres des phonons de LiBeP dans ses trois phases avec l’analyse des modes propres de vibration au centre de la zone de Brillouin.LiMgP et LiZnP subissent deux transitions de phase du cubique vers l’orthorhombique puis vers l’hexagonale, LiMgAs et LiZnAs passant du cubique vers l’orthorhombique.Dans la phase polaire la polarisation spontanée est évaluée pour tous les matériaux étudiés.Le coefficient de la dilatation thermique pour LiMgP, LiMgAs, LiZnP et LiZnAs ainsi que leurs binaires analogues AlP, AlAs, GaP et GaAs dans le cadre de l’approximation quasi harmonique est calculé, Nos résultats montrent qu’ à pression nulle ce coefficient de dilatation est positif dans les composés ternaires, mais sous pression un comportementnégatif est prédit pour LiMgAs et LiZnAs.

عبد الحاكم لضفار, فؤاد كيوص , فوزي شرابطي

كلية العلوم الاجتماعية والإنسانية-جامعة غرداية · الجزائر

هدفت هذه الدراسة إلى التعرف على مدى تأثير الاتجاهات الحديثة في العلاقات العامة على تحقيق كفاءة الأداء المؤسساتي من خلال القيام بدراسة ميدانية للوكالة الوطنية لدعم وتشغيل الشباب -غرداية- وقد انطلقت هذه الدراسة من الإشكالية: إلى أي مدى تؤثر الاتجاهات الحديثة في العلاقات العامة على تحقيق الأداء المؤسساتي؟ اندرجت تحت هذه الإشكالية متغيرات وهي: المتغير المستقل: الاتجاهات الحديثة في العلاقات العامة. المتغير التابع: الأداء المؤسساتي. المتغيرات الوظيفية والشخصية والمتمثلة في: السن والجنس والمستوى التعليمي والتخصص العلمي والوظيفة في المؤسسة والخبرة المهنية. وكان الهدف الرئيسي للدراسة هو التعرف على مدى تأثير الاتجاهات الحديثة في العلاقات العامة على تحقيق كفاءة الأداء المؤسساتي. وتعتبر الدراسة من الدراسات الوصفية واعتمدنا على المنهج الوصفي التحليلي بشقه المسحي وقمنا بالحصر الشامل لمجتمع الدراسة بدلاً من العينة، وتوصلت الدراسة إلى النتائج التالية: تأييد كلي لأفراد مجتمع الدراسة على أهمية وجود جهاز للعلاقات العامة بالوكالة الوطنية لدعم وتشغيل الشباب (أونساج) بولاية غرداية نظراً لأنه يساعد الموظفين والوكالة على تأدية مهامها داخلياً وخارجياً. نستنتج كذلك من خلال نتائج الدراسة أن اعتماد جهاز العلاقات العامة على الاتجاهات (التكنولوجيا الرقمية) الحديثة في عمله نتيجة حتمية لنتاج مخلفات التكنولوجيا الإلكترونية، وكذلك الخطة المنتهجة من الإدارات لتبني الاتجاه الرقمي الحديث. لا يوجد اختلافات جوهرية بين أفراد مجتمع البحث حول إسهامات التكنولوجيا الرقمية في العلاقات العامة بصفة خاصة والوكالة بصفة عامة، كذلك لسعي الإدارة للارتقاء بالجانب السلوكي والمعرفي والوظيفي للفرد. تلعب التكنولوجيا الرقمية في أداء العلاقات العامة دوراً مؤثراً من خلال الإضافة التي تقدمها لها من خلال السرعة واختصار الوقت والجهد.

Uthman Baroudi, عبدالله ناصر فهد الفضلي, محمد يونس

كلية علوم وهندسة الحاسب الآلي-جامعة الملك فهد للبترول والمعادن · السعودية

Wireless sensor and actor networks (WSANs) have emerged recently in many Mission Critical Applications (MCA) such as military surveillance, research and rescue, and fire extinguishing, etc. These types of applications need to be deployed on robust networks that can handle node failures in real time manner. However, WSAN usually operate in harsh environment and thus become susceptible to breakage in connectivity due to the failure of one or multiple actor nodes. Given that WSANS are deployed in remote areas, restoring connectivity through self-reconfiguring the network topology becomes the most preferred solution. In this PhD dissertation, we investigate the requirements of Critical Mission Wireless Sensor and Actor Networks in terms of robustness and connectivity and provide analytically and by simulation central and distributed approaches to handle single and multiple node failures. The central approach which serves as a lower bound to other heuristics is based on Integer Linear Programming (ILP) formulation and uses traveled distance as its objective function. While minimizing the total traveled distance is the main goal of the ILP approach, other performance metrics are considered such as the loss of coverage and the maximum traveled distance by a node. Since applying a central approach is not feasible in WSAN, we developed distributed approaches that depend on local information, and provide a restoration mechanism that can handle single and multiple node failures with minimized cost. Our first distributed approach is called Least Distance Movement Recovery approach (LDMR) which exploits non-critical nodes in the network in order to replace failed nodes. It has been enhanced to behave adaptively based on the network topology in order to achieve better performance in sparse and dense networks. The new adaptive approach which is based on LDMR is called Adaptive Connectivity Restoration Algorithm (ACRA).To restore network connectivity in case of multiple simultaneous failures, we developed a new approach called Simultaneous Failures Recovery Approach (SFRA). SFRA depends on constructing a recovery tree from the original network starting from a pre-assigned root. Unlike other solutions, SFRA can handle completely partitioned networks based on the current state of the network topology. We show the effectiveness and correctness of our approaches analytically and by simulations.

Basma Djaroun, Keda Draiche, Kheira Haouache

كلية العلوم التطبيقية-جامعة ابن خلدون – تيارت · الجزائر

Dans ce présent travail, un modèle analytique est développé pour l’analyse du comportement mécanique (flexion, flambement et vibration libre) des poutres en matériaux à gradient de propriétés (FGM) en utilisant une simple théorie de déformation de cisaillement parabolique (PSDT) à trois variables basée sur un nouveau champ de déplacement. La théorie proposée donne une description parabolique de la contrainte de cisaillement transversal à travers l’épaisseur de la poutre tout en remplissant la condition des contraintes nulles sur les bords supérieur et inférieur de la poutre. Les propriétés mécaniques des poutres sont supposées d’être variables en fonction d’une distribution de loi de puissance (P-FGM) et exponentielle (E-FGM) de la fraction volumique des constituants. Les équations différentielles d’équilibre et les conditions aux limites des poutres FGM sont dérivées en utilisant le principe d’Hamilton. Les solutions sont obtenues en utilisant l’approche de Navier pour le cas des poutres FG simplement appuyées. Les résultats numériques obtenus par le présent modèle sont comparés avec d’autres solutions proposées par des autres théories disponibles dans la littérature. On peut conclure que la théorie proposée est précise et efficace pour étudier la réponse statique et dynamique des plaques en matériaux à gradient de propriétés.

Doris Summer, منى حرب

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

This thesis investigates the 'serial reproduction' of new downtowns as up-todate business and financial districts and high-end residential neighbourhoods in the central areas of Beirut and Amman. These new monumental spaces are designed as the 'icons' of

Fatima Zard, Kanza Salmi, فضيلة عبادو

كلية الاداب واللغات-جامعة محمد بوضياف - المسيلة · الجزائر

AbstractSecond language acquisition requires some key terms to be successfully achieved including the methods being used in classrooms. Cooperative method is a one of those essential ingredients that facilitate second language learning. Teachers are the stone corner that may strengthen learners' learning and accomplish better outcomes. Accordingly, this research work aims at investigating the utilization of cooperative method in the EFL secondary classes by taking El'Hadj Khiri L'Kheir secondary School in Magra as a case study. The problems being studied in this current work are whether the Algerian EFL teachers understand cooperative learning method. Besides, researchers attempted to figure out the extent to which teachers incorporate cooperative learning elements during group work activities. Moreover, the last problem being studied is that pointing out the opinions of second year secondary school students about group work used in classrooms.In order to achieve the underlined aim of this study, the descriptive method was used in which a questionnaire was designed for both teachers and students. The sole reason for the questionnaire is to figure out the reality of using cooperative learning in EFL classes so that checking the hypothesis studied. The final result of this study has shown that most EFL teachers have little understanding of cooperative method and that they do not work in respect to its elements while arranging students in groups. Moreover, it shows that students do not find the atmosphere interesting while teachers assemble them in small groups, so they claim that they cannot work cooperatively. Accordingly, the hypothesis was proved. Based upon the founded results, various suggestions were given to teachers to work effectively using cooperative method. Additionally, some recommendations were presented for future work.

زهير سر الختم عبد السلام سليمان, مصطفى خضر مصطفى النميري

كلية الطب-جامعة النيلين · السودان

:Introduction:Effective communicable disease control relies on effective disease surveillance. Blue Nile State has a huge burden and high prevalence of communicable diseases in the presence of long standing emergency context that requires a well-functioning surveillance system to provide information to monitor the health status of entire population and public health problems.Objectives:The objective of this study was to study the communicable diseases surveillance system in Blue Nile State during 2011 – 2013 through assessment of its core activities, support functions and quality standards.Methods:A descriptive quantitative and qualitative study design was used. Quantitative data were collected through three questionnaires together with records reviews for the study period at different levels of the system e.g. State (n=1), locality (n=6) and sentinel sites (n=54) while qualitative data were collected through individual interviews and focus group discussions which targeted system staff at those levels in addition to some experts and key staff at different levels. Total coverage used to determine the sample size throughout the study however due to insecurity this was not applied at sentinel sites level (e.g.67.5%). Statistical Package for the Social Sciences software version 20 was used to analyze the quantitative data (80% set as the standard bench mark for each indicator). Likert tri-scale was used to analyze quantitative data gathered from sentinel sites staff on their satisfaction with the CDSS in the State, their awareness on existing gaps in the CDSS and their personal motivation. The qualitative data (focused group and key informant interviews data) were analyzed using contents analysis based on subjects arising from the data.Results:The results showed that almost all core activities and support functions of communicable diseases surveillance system in Blue Nile State were far below the recommended standards and also revealed poor application of quality requirements throughout the study period with slight improvement in 2013. As per CDSS staff views the system was changed to be a centralized system and failed to meet its objectives due to in-adequate financial resources, lack of job aid materials, in adequate supportive supervision, weak feedback, lack of training opportunities, weak preparedness and response to epidemics measures, weak analysis surveillance data, problems in early detection and confirmation of cases as well as problems in data reporting.Conclusion:The study concluded that Communicable Diseases Surveillance System in Blue Nile State had many defects in case detection and confirmation, data reporting and analysis, epidemics preparedness and response in addition to weak feedback system. Furthermore, the system had major gaps on its financial resources and there was weak supervision provided at different levels and inadequate training opportunities for staff. Quality standards of the system (e.g. Completeness, timeliness and usefulness) were also lagging behind, all that hindered the system to meet its objectives and those defects were most obvious at lower and lowest levels of the system, locality and sentinel sites respectively. Accordingly, the system changed to be centralized system with the state level hold most of the communicable diseases surveillance functions and responsibilities.Recommendations:The study recommended set of actions to make the system a decentralized system with empowerment of locality level surveillance levels through provision of all requirements in term of financial, logistic and technical support in order to strengthen epidemics preparedness and response. Human resources gaps especially at locality and sentinel sites need to be addressed together with ensuring staff commitment and motivation through monetary and non-monetary incentives (e.g. by strengthening feedback system and supportive supervision).

خالد محمد, نزار محمد

كلية الطب البيطري-جامعة الخرطوم · السودان

The objective of the present study was to isolate and identifybacterial contaminants of some Sudanese paper currency notes. Thisstudy was conducted in Khartoum State in the period from May toOctober 2005.Sixty paper bills of five different denominations (100, 200, 500,1000 and 2000 SD) were collected randomly from different sourcesincluding bus drivers, groceries, hospital pharmacies, butchers, cafeteriasand medical laboratories. Each bill was preserved in sterile plastic filebag and transported to the microbiology lab for bacteriologicalexaminations.The study revealed that the frequency of bacterial isolation fromdifferent samples was 24.5 % for hospital pharmacies, 21.6 % formedical diagnostic lab., 17.6 % for bus drivers, 13.7 % for butchers, 11.8% for groceries and 10.8 % for cafeterias. The rate of bacterial isolationfrom different denominations were 34.3 %, 31.4 %, 14.7 %, 13.7 % and5.9 % for 200, 100, 500, 1000 and 2000 SD, respectively.The study indicated that Klebsiella pneumoniae(13.7 %), Bacillusspp(12.7 %), Staphylococcus epidermidis (10.8 %), Salmonella spp (9.7%), Serratia spp(8.8 %), E coli (7.8 %), Pseudomonas aerugenosa (6.9%), Enterobacter spp(6.9 %), Yesrssinia spp (6.9 %), Staph aureus (5.9%),Proteus spp(4.9 %), Hafnia alvei (2.9 %)and Citrobacter spp (2 %).Were the most frequently isolatedbacterial species contaminatingSudanese currency notes.

حسين رميني, زهرة بغدلي, شروق معمري, ياسمين صحراوي

كلية علوم الطبيعة والحياة وعلوم الارض-جامعة اكلى محند أولحاج - البويرة · الجزائر

Le pin d’Alep est un arbre qui appartient à la famille des Pinaceae. C’est une plantemédicinale largement utilisée en médecine traditionnelle à des fins thérapeutiques à cause de sa richesse en composés actifs. Cela nous a conduits à l’extraction des composés phénoliques à partir de ses graines avec l’éthanol et l’eau, suivi d’une évaluation de l’activité antibactérienne vis-à-vis des souches pathogènes. Élaboration d’un fromage frais enrichi avec les graines de Pinus halepensis Mill, destests sensoriels du fromage sont effectués. Les tests sensoriels montrent que le fromage élaboré c’est le fromage B, enrichi en poudre brute des graines de Pinus halepensis Mill qui est le plus apprécié par les sujets naïfs.