عواطف حسن علي عبدالمجيد, نوف سلمان صالح المزيني
كلية التربية-جامعة طيبة · السعودية
Sarine Artine Agopian, Ümit Fırat Açıkgöz
كلية مارون سمعان للهندسة والعمارة-الجامعة الأمريكية في بيروت · لبنان
This thesis focuses on the transformation of nineteenth-century Kadıköy, Istanbul, from a small agricultural village to one of the bustling commercial and residential hubs of the imperial capital. It examines the post-1855 Fire planning of Kadıköy, which is one of the earliest urban planning experiences in the modern Middle East. I argue that local factors (i.e. neighborhood fires, demographic changes, local agency) shaped Kadıköy’s urban transformations as significantly as the larger imperial (Ottoman modernization) and global (capitalism) dynamics. In addition to contemporary newspapers and the existing scholarly literature on Ottoman urban modernization, the memoirs and maps of Hovhannes Kalfa Stepanian, a nineteenth-century builder and a Kadıköy resident, constitute the core source of this thesis. By examining Stepanian’s documents in light of official and historical sources, this thesis maps the urban modernization of late Ottoman Kadıköy. It also argues that much of the contemporary characteristics of modern-day Kadıköy are rooted in the incremental urban practices of the nineteenth century. The importance of this research is twofold. First, it shows the gap between the imperial regulations concerning urban modernization and the actual practices of urbanism on the ground whereby these regulations were constantly negotiated with local dynamics. Second, it offers an in-depth study of the modernization of a plural Ottoman district, which will provide important clues for understanding the modernization of similarly mixed districts in the rest of Istanbul as well as the other major port cities of the empire such as Thessaloniki, Izmir, and Beirut.
Karim Seddik, Mariam Mohamed Nabil Aboelwafa
كلية العلوم والهندسة-الجامعة الأمريكية بالقاهرة · مصر
Wireless communication networks are emerging fast with a lot of challenges and ambitions. Requirements that are expected to be delivered by modern wireless networks are complex, multi-dimensional, and sometimes contradicting. In this thesis, we investigate several types of emerging wireless networks and tackle some challenges of these various networks. We focus on three main challenges. Those are Resource Optimization, Network Management, and Cyber Security. We present multiple views of these three aspects and propose solutions to probable scenarios. The first challenge (Resource Optimization) is studied in Wireless Powered Communication Networks (WPCNs). WPCNs are considered a very promising approach towards sustainable, self-sufficient wireless sensor networks. We consider a WPCN with Non-Orthogonal Multiple Access (NOMA) and study two decoding schemes aiming for optimizing the performance with and without interference cancellation. This leads to solving convex and non-convex optimization problems. The second challenge (Network Management) is studied for cellular networks and handled using Machine Learning (ML). Two scenarios are considered. First, we target energy conservation. We propose an ML-based approach to turn Multiple Input Multiple Output (MIMO) technology on/off depending on certain criteria. Turning off MIMO can save considerable energy of the total site consumption. To control enabling and disabling MIMO, a Neural Network (NN) based approach is used. It learns some network features and decides whether the site can achieve satisfactory performance with MIMO off or not. In the second scenario, we take a deeper look into the cellular network aiming for more control over the network features. We propose a Reinforcement Learning-based approach to control three features of the network (relative CIOs, transmission power, and MIMO feature). The proposed approach delivers a stable state of the cellular network and enables the network to self-heal after any change or disturbance in the surroundings. In the third challenge (Cyber Security), we propose an NN-based approach with the target of detecting False Data Injection (FDI) in industrial data. FDI attacks corrupt sensor measurements to deceive the industrial platform. The proposed approach uses an Autoencoder (AE) for FDI detection. In addition, a Denoising AE (DAE) is used to clean the corrupted data for further processing.
Touil Zakaria, سعاد بحري
كلية الآداب واللغات والعلوم الاجتماعية-جامعة عين تموشنت - بلحاج شعيب · الجزائر
أحمد علي إبراهيم حمو, عبد النبي كليكر كودى
كلية القانون-جامعة النيلين · السودان
A Harhad, Chehhat Abdelmadjid
كلية العلوم-جامعة سعد دحلب - البليدة · الجزائر
L'écoulement instationnaire turbulent de l'air supposé visqueux et compressible à l'intérieur du cylindre d'un moteur à combustion interne durant les deux phases admission et compression, est simulé numériquement, avec et sans swirl par la méthode des volumes finis, avec un schéma dit « PLDS » : (Power Law Diferencing Scheme) dans l'espace et un schéma implicite dans le temps. Le modèle de turbulence utilisé est celui à deux équations de transport basé sur la théorie du groupe de renormalisation (RNG K-&). Le code de calcul TEAM initialement conçu pour simuler des écoulements stationnaires incompressible dans des jets libres a été étendu aux écoulements non stationnaires compressibles. Les résultats ainsi obtenus sont satisfaisants et ouvrent la voie pour la simulation des autres phases du cycle.
ربيعة علال, فريدة قبايلي, فضيلة بن مدور
كلية الاداب واللغات-جامعة محمد بوضياف - المسيلة · الجزائر
L'objectif principal de notre travail est l‟étude une antenne imprimée, de forme circulaire à bande interdite électromagnétique (BIE) 1D.et le superstrat BIE est à base de FSS (Frequency Surface Selectifs) à défaut de fréquences opérant dans la bande 5G seuls les spectres de fréquence sous 6GHzNous avons étudié l‟influence des paramètres géométriques et physiques de l‟antenne sur la fréquence de résonnance et la bande passante et sur le gain et la directivité. Les paramètres que nous avons étudiés : les dimensions de rayon du patch, la surface de motif du patch l‟épaisseur du substrat le matériau du substrat (matériau à BIE), permittivité, la distance de la couche FSS et le défaut de motif de cette couche en utilisant l‟outil de simulation électromagnétique dans le domaine fréquentiel CST qui est basé sur la méthode d‟intégration finie
عبد الرزاق قاسم, قمر المللي
كلية الاقتصاد-جامعة دمشق · سوريا
بيشه وا زانا سيدكل, حسين عبد علي عيسى
كلية القانون-جامعة السليمانية · العراق
S. M. OULDMOHAMED, رقيعه درويش
كلية العلوم-جامعة سعد دحلب - البليدة · الجزائر
