Robert Saliba, Joeyline Joseph Tannous

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

Between 1975 and 1990, war-led decentralization instigated the relocation of business and entertainment activities to Beirut’s suburban expansions and peripheral coastal towns. Kaslik strongly emerged as an exclusive entertainment-retail and tourist destination due to the presence of sea resorts and higher education institutions, i.e., the Holy Spirit University of Kaslik (Bou Lahdo, 1999; Davie, 1993). The last three decades underwent a reverse process of post-war recentralization, mallifiction, and e-commerce, reducing the attraction of street-based shopping. Peri-urban Entertainment-Retail Strips (ERS) such as Kaslik witnessed high vacancy rates and a sharp decrease in their commercial activities. This global trend, referred to as the “dying strips” phenomena (Depriest-Hricko & Prytherch, 2013), has been addressed through various regeneration strategies involving marketing and urban management (Portas, 2011; Irazábal & Chakravarty, 2007), catalytic interventions (Logan and Attoe, 1989) as well as place-making, i.e., a people-centered approach in designing public spaces (Southworth, 2005). This thesis is an attempt to learn from international case studies in strip regeneration and to critically assess their adaptability to the local context. It proposes a set of context-sensitive economic and urban design guidelines for enhancing streetscape identity, improving vehicular and pedestrian connectivity, and providing a framework for private development aimed at reclaiming the role of Kaslik as a peri-urban shopping and entertainment prime destination.

ELsiddig Musa Ali Musa, Gafer Abd AL Hamid

كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان

Machines are very important in modern society. The bearing compose a supreme component in the machine parts ,hence, many problems arise that minimize bearing life like high temperature, speed and excessive vibration.In this research, electronic simulation system is developed to measure temperature, speed, and vibration in deep groove ball bearing. Hence, the system live alarms and sends signal to stop the machine when it exceeds one of three-designed value.This system was tested in the simulation program which is considered an approximate imitation of the operation of process or system, that represents its operation over time, which showed a good possibility in measuring and control stopping the machine.Thus, this simulation can serve as a risk prediction system in order to avoid such risks which might occur to the bearings.

الكيلاني عبدالكريم الكيلاني, نورا إدريس إبراهيم شاكير

كلية الاقتصاد-جامعة بنغازي (قاريونس سابقا) · ليبيا

Fatima Semoud , Nawel Soukkou , Tarek Khennouf

كلية علوم الطبيعة والحياة-جامعة محمد الصديق بن يحيى - جيجل · الجزائر

Les deux souches de Lactobacillus plantarum productrices d'EPS (10 et BCX1) ont été isoléesrespectivement à partir de rumen et du lait de chèvre. L’étude de la production des EPS par cessouches dans des milieux MRS modifiés contenant diverses sources de carbone a été révélé avec(glucose saccharose, maltose, fructose, galactose) à des concentrations de 20 et 40 mg / litre. Lesdeux souches étaient capables de produire les EPS dans chacun des sucres testés. La concentrationde sucre et le temps d’incubation présente un effet marqué sur le rendement en EPS.ces dernierspeuvent modifier les propriétés de la surface de ces deux souches. (The two EPS-producing strains of Lactobacillus plantarum(10 and BCX1) were isolated from rumen and goat milk, respectively. The study of EPS production by these strains in modified MRS media containing various carbon sources was revealed with (glucose sucrose, maltose, fructose, galactose) at concentrations of20 and 40 mg / liter. Both strains were able to produce EPS in each of the sugars tested. The sugar concentration and the incubation time have a marked effect on the yield of EPS. These latter can modify the properties of the surface of these two strains.)

داود سلمان صالح الدليمي, عصام خليل إبراهيم المحمدي

كلية العلوم الاسلامية-جامعة بغداد · العراق

Ashraf S. Mahmoud, Marwan H. Abu-Amara, عبدالعزيز بن محمد بن علي البيز

كلية الهندسة-جامعة الملك فهد للبترول والمعادن · السعودية

Internet is an interconnection of independent Autonomous Systems (ASes). Most of the large ASes are operated by Internet Service Providers (ISPs), which are classified into 3 tiers based on their size and interconnections. Most of the Internet traffic is routed through the Internet core, represented by higher-tier ISPs. Because of the security flaws of Border Gateway Protocol (BGP), the presence of one or more malicious ISPs among the higher-tier ISPs can lead to many security concerns. Internet denial is when a malicious ISP blocks some or all the traffic that belongs to a specific network. The impact of Internet denial can be very critical. Network Address Translation (NAT) is used to design a solution that is scalable. In the NAT-based solution, outgoing traffic is address-translated into a non-blocked IP address in order to hide its identity. However, NAT limits end-to-end connectivity, causing servers within the victim network to become unreachable by external users. Application-layer information is used to design solutions for web and email server reachability behind NAT. NAT also limits peer-to-peer (p2p) connectivity, preventing p2p applications from working properly. Existing solutions for NAT traversal are used to bypass this limitation. The impact of the proposed NAT-based solution on performance is negligibly small, and only a single NAT traversal technique, namely relaying, causes significant impact on the network performance.

F. Boudali, Matallah Imane, Remadelia Abdellah

كلية العلوم والتكنولوجيا-جامعة الجيلالي بونعامة - خميس مليانة · الجزائر

فرح بوطيبة بن قلاوز, ليلي صديق

كلية الأدب العربي والفنون-جامعة عبد الحميد بن باديس مستغانم · الجزائر

نستنتج من خلال دراستنا لكتاب دروس في اللسانيات التطبيقية، لصالح بلعيد أن اللسانيات التطبيقية حقل من الحقول المعرفية الحديثة التي ساهمت في ترقية الحصيلة العلمية والمعرفية، وتطوير طرق ووسائل تعليمها وتعلمها للناطقين ولغير الناطقين بها، فظهرت مع مشكلة تعليم اللغات الحية للأجانب من أجل تحسين نوعية تعليمها ،تشمل عدة مجالات منها، اللسانيات النفسية، التقابلية، اللسانيات الاجتماعية، الترجمة، صناعة المعاجم، ولمعالجة المشكلات الرئيسية التي تواجهها التربية في ميدان التعليميات، مثل نظريات التعلم ، وضعف الكفاية الداخلية والخارجية في التعليم، ونوه صالح بلعيد لضرورة اعتماد افكار تربوية جديدة، ومدرس معد اعدادا جيدا، ووسائل سمعية بصرية، لمزيد من الايضاح تحمل على اعانة ومساعدة المعلم والمتعلم، ومنظومة تربوية فاعلة تربط جذورها بقضايا العصر، ولذا كان لابد من تنمية اللغة العربية الفصيحة، وتعميم استعمالها، وتدريس اللغات الاجنبية والاستفادة منها بشكل جيد.

Bilal Mohamed said , Salah Eddine Berrabah , Samir Zeghlache

كلية التكنولوجيا-جامعة محمد بوضياف - المسيلة · الجزائر

Pour des applications de forte puissance, les machines multiphasées sont de plus en plus utilisées pour des raisons de fiabilité et de segmentation de puissance. Un des exemples les plus courants des machines multiphasées est la machine asynchrone double étoile (MASDE). Ce mémoire, présente une étude sur cette machine ‘MASDE’. On a commencé par un état de l’art sur la machine proposée et de sa modélisation à l’aide de la transformation de Park et alimentée par deux onduleurs deux niveaux. L’application de la commande en vitesse par la commande vectorielle (DFOC) à base d’un régulateur PI classiques, qui assurant un découplage entre couple et flux qui présente certains inconvénients tels que la sensibilité aux incertitudes paramétriques de la machine et leurs variations où le découplage est affecté et devant l’insuffisance des performances de cette commande à base des régulateurs PI ,nous avons fait appel à un autre régulateur dit le régulateur par mode glissant qui présente une amélioration aux réponses et une robustesse contre les variations paramétriques d’où on peut le considéré comme l’un des régulateurs de vitesse robustes.

سعد سامي جاسم

الجامعة التكنولوجية · العراق