Hanane Lamari, N. Bouchenafa-Saib

كلية التكنولوجيا-جامعة سعد دحلب - البليدة · الجزائر

Belkacem Ferouani, Leila Mahboub

كلية العلوم الاقتصادية والعلوم التجارية وعلوم التسيير-جامعة أبو بكر بلقايد - تلمسان · الجزائر

La premiére partie fait le point sur le développement de l'organisation du travail et son développement au coeur de l'organisation, puis les effets de la communication interne au service de l'entreprise et aprés la réflexion stratégique. et la deuxiéme partie sera resérve à l'étude empirique menée au prés du personnel de la société de la cimenterie de Béni-saf .

Marie-Therese Endale Lottin, Yasemin Yildiz

كلية التربية-الجامعة البريطانية في دبي · الامارات

The study reports on the regulated and unregulated literacy practices of three adolescent children who all interact within a multilingual context in which we examine these practices to ascertain which of the language. The Subjects speak, understand and/or are familiar with at least 10 languages between them (English, French, Pidgin English, Spanish, Cameroonian dialects, Latin, German, Arabic, Chinese and Mandarin). We undertook an ethnographic case study by using literacy diaries and lexical retrieval tasks to obtain qualitative data which describes whether the knowledge of L1 and L2 and other languages is a significant predictor of the accuracy of lexical access. We assumed that the prevailing sociolinguistic and cultural environment in which the Subjects live will affect which language(s) make up their memory store. We also discuss heritage speakers in the light of differences in language input and learning experience which determine the behavior manifestations of linguistic knowledge and aptitude in regulated and unregulated contexts through using an ethnographic case study. Ultimately, our aim is to corroborate the bank of current literature which is seeking to make this aspect of psycholinguistics and sociolinguistic analysis an area of research in its right. We also interpret our findings as evidence that L1 attrition and successful competence in L2 and heritage languages are dependent on a combination of attitude, motivation and other personal background variables.

كابوي شيبالو, محمد الإدریسي

كلية الطب والصيدلة -جامعة سيدي محمد بن عبدالله - فاس · المغرب

Ahlem Bassour, F. Z. Djazouli Alim, Kamel Boudjema

كلية علوم الطبيعة والحياة-جامعة سعد دحلب - البليدة · الجزائر

Abdel Latief Ashmaig , Edwin Zozimo Ogo Jiribi

كلية الدراسات العليا-جامعة الخرطوم · السودان

Ultrasonography has proved to be an accurate, safe, fast, reliable and costeffective imaging modality for the estimation of fetal weight at term.This study was carried out at the Ribat university hospital at Burri,Khartoum from December 6, 2003 to May 3, 2004 to evaluate the relativeaccuracy of three ultrasonographic formulas in estimating fetal weight interm Sudanese ladies.200 pregnant ladies, aged between 18 and 42 years, were examinedsonologically by a senior radiologist using an Aloka SSD- 650 real timescanner and the fetal weights were calculated using the Aloka formula A,Aoki’s formula and Shephard’s formula.36.5 % of the study population were primigravidas and the rest were parouswomen. The mean gestational age at delivery was 39.5 ± 1.4 weeks while11.5 % of the deliveries occurred after more than 40 weeks of gestation (post term)41.0 % of the ladies delivered on the same day of sonological examination,45.0 % delivered one day after examination while 14.0 % delivered two daysafter examination.The study found that the birth weights of 93.0 % of the newborn babies werewithin the reference weight of 2500 – 4000 grams. Only 4.0 % of thenewborns have low birth weights ( below the 10th percentile) while 3.0 %were macrosomic ( above 90th percentile).54.5 % of the newborn babies were of male gender compared with 45.5 %female babies.The mean birth weight for the study population was found to be 3196.70 ±454.16 grams. Male newborns had a higher mean birth weight (3281 ±664.308 grams) compared to newborn girls whose mean birth weight was3107 ± 635.077 grams.Two of the evaluated formulas, Aoki’s and Shephard’s formuals tended tounderestimate fetal weights while the third formula, the Aloka formula gaveestimates higher than the mean actual birth weight. However, all threeevaluated formulas were found to be accurate for estimation of fetal birthweight in Sudanese ladies. The Aoki formula had the highest degree ofaccuracy with 77.0 % of its estimates falling within 10.0 % of actual birthweights. The Shephard equation was next with 76.0 % of its estimates within10.0 % of actual birth weighs while Aloka’s equation predicted 75.5 % ofthe fetal weights within 10.0 % of actual birth weights. The Aoki formulaalso had the smallest mean error among the three evaluated formulas and hasbeen recommended for use by the Sudanese obstetricians.

Kamal NasrEldin Abdalla, Esam Elsarrag , Ibrahim Mohamed Ahmed Ibrahim Fadul

جامعة الخرطوم · السودان

The objective of this thesis is to improve engines performance and to reduce fuel consumption by mixing fuel with HHO gas. A gaseous fuel containing high percentages of hydrogen and oxygen, is obtained directly from water by a special kind of electrolysis technology. This gaseous fuel is mixed with gasoline or diesel in the engine intake. This research presents the results obtained from the experiments concerning electrolyser production efficiency, performance of petrol engine when it is operated at different speeds, the effect of electrolyte‟s temperature on electrolyser operation, road tests of moving vehicle and some of emissions measurements. These tests emphasized the possibility of reducing fuel consumptions and pollutants from exhaust gases offered by the gaseous fuel; in comparison with the engine operated on gasoline fuel alone. Experiments confirmed the following: an improvement in engine performance, a reduction in fuel consumption, a reduction of HC emissions, no CO emissions are noticed and some increase of CO2 emissions.

Bilal Saoud , Houssem Eddine Kechkar , Mohamed Diaa Eddine Djeddi

كلية العلوم والعلوم التطبيقية-جامعة اكلى محند أولحاج - البويرة · الجزائر

Les réseaux MANET (Mobile Ad Hoc Network) constituent une catégorie de réseaux sans fil.Cesréseauxpeuventêtredéployésrapidementsansinfrastructuredonclesnœudsdoiventjouer le rôle d’un routeur pour l’acheminement des données de la source vers la destination. Il existe plusieurs protocoles de routage pour assurer l’acheminement de l’information. Dans ce travail nousavonsproposéuneaméliorationdeprotocoleAODVquiestbaséesurlapuissancedesignal dont deux algorithmes pour l’installation et la maintenance des routes entre les sources et les destinations.UnecomparaisonentreleprotocoleAODVetnotrepropositionquiaétéfaitesurle simulateur OPNET, les résultats obtenus montrent clairement l’efficacité de la nôtre en termes d’installation et maintenance desitinéraires.

Assem Safieddine, MOUFID MAURICE DARDAS

كلية سليمان العليان لإدارة الأعمال -الجامعة الأمريكية في بيروت-الجامعة الأمريكية في بيروت · لبنان

The purpose of this project is to provide background information about private e quity investments in addition to addressing the most important issues commonly a ddressed in this topic. The first chapter provides an overall introduction to th e private eq

Kheira Djab, Laouni Djaafri , Rachida Elhadj

كلية الرياضيات وعلوم الحاسب-جامعة ابن خلدون – تيارت · الجزائر

Le but de notre projet de fin d’études est de développer une application de visioconférence dans les WLAN , Les applications de visioconférence permettent de relier des amis, des associés, ou d’autres individus moyennant principalement des outils logiciels et de communiquer en temps réel par l’intermédiaire des équipements (micro-ordinateur, connecteur WI-FI, écouteur, microphone, webcam,…), notre projet basé sur les réseaux locaux sans fil notamment le WI-FI. Permet donc d’organiser des réunions virtuelles de travail, des conférences, formations ou autres réunions à distance tout en donnant l’impression d’être tous présents dans la même salle. En premier lieu une étude approfondie est faite sur les réseaux de communications ensuite on concentre à la visioconférence et leur objectif dans les domaines d’application enfin en présentent la conception et l’implémentation du notre application.