الاخبار

LOADING LIMIT OF AN EHV POWER SYSTEM CONSIDERING VOLTAGE STABILITY USING CATASTROPHE THEORY

للكاتب Gamal Abdelazim Mahmoud Electrical Engineering Dept. Suez Canal University, Port-Said, Egypt ABSTRACT Steady state voltage profile and line loading limit of EHV power system has been analytically investigated from the view point of voltage instability using the Catastrophe theory. The system voltage equations are formed in a lossless frame, the basic expressions for the power transfer limit at critical …

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POWER TRANSFORMER OIL EXPERIENCES USING DISSOLVED GAS ANALYSIS

للكاتبين B. EL Bastawisy1, S. Elmazaly1, N. S. Zaghloul1, M.M.Ali2 and S. Z. Elsayed3 1 Egyptian Electricity Co. Alex , Egypt 2 Atomic Energy Authority, Cairo, Egypt 3 Labour University , Alex, Egypt ABSTRACT The safety in operating the power transformers is one of the essential factors to be considered to get a reliable high performance source of electrical Energy. …

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RECENT IMPROVEMENTS IN AC-DC DIFFERENCE CALIBRATION SERVICE FOR THERMAL TRANSFER STANDARDS AT NIS, EGYPT

للكاتب Mamdouh M. Halawa Electrical Metrology Department, National Institute for Standards (NIS) Tersa St., Giza, El-Ahram, Box: 136, Code: 12211, Egypt ABSTRACT This paper gives a brief summary of the ac-dc difference calibration service for thermal transfer standards at the National Institute for Standards (NIS), Egypt. Related subjects discussed include automated calibration system, bi-lateral intercomparison (with NPL, England), the efficiency …

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DEVELOPMENT OF SHOOTER TRAINING KIT ALONGWITH GRAPHICAL IMITATION

للكاتب M. Zafrullah, Rahat Ali and Sajjad Hider University of Engineering & Technology, Taxila, Pakistan ABSTRACT: This paper proposes a system which can be used for the training of shooters. The proposed system is based on image processing technique. This is developed to provide the firer a chance to remove his basic firing errors. It analyzes shooter’s performance and discovers …

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A NEW PUBLIC KEY MULTI-MESSAGE ELLIPTIC CURVE SIGNCRYPTION SCHEME (PK-MM-ECS) FOR SECURE COMMUNICATIONS

للكاتبين   sam A. A. Hagras1 , Abdel-Aty M. EmarahA2 and Hassan M. Elkamchouchi3 1 Air Defense College 2Egyptian Armed Forces 3Faculty of Eng., Alex. Univ, Egypt ABSTRACT In this paper, a new efficient public key multi-message elliptic curve signcryption (PK-MMECS) scheme for cryptographic transmission has been proposed. The proposed scheme simultaneously fulfills the multiple messages in a logical single step …

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A NEW ROBUST BLOWFISH BLOCK CIPHER (RBBC) FOR SECURE COMMUNICATION SYSTEMS

للكاتبين  Mazhar B. Tayel1 AND Hamed Sh. Zaed1 1Faculty of Eng., Alex. Univ. 2Air Defense College ABSTRACT The higher demand and greater awareness on security problems lead to study of more secure, high performance, reliable and flexible systems. To meet these demands a proposed Robust Blowfish Block Cipher (RBBC) algorithm is introduced. The same algorithm is used for decryption as …

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أهداف 2008 شاركنا …. لنتطور معا

نرجو منكم المشاركة بمراجعة الأهداف التالية وإبداء أراكم وملاحظاتكم لتكن اقرب وأكثر إفادة لكم.   بسم الله الرحمن الرحيم والصلاة والسلام على اشرف الأنبياء والمرسلين. نعمل على صياغة أهداف شبكة التخطيط العمراني والتي نتطلع من خلالها إلى تقديم خدمة أفضل لكم وبالتالي  لمجتمعاتنا. راعينا في صياغة أهداف هذا العام انجازات العام السابق والبناء عليها و تطلعات أعضاء شبكة التخطيط العمراني والعمل …

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أهداف 2007 ،،!!! انجازات وإخفاقات شبكة التخطيط العمراني

بسم الله والصلاة والسلام على سيدنا محمد وعلى اله وصحبة ومن ولاة، ولله الحمد يطل علينا عام جديد منذ التدشين النهائي لشبكة التخطيط العمراني دون انقطاع. وقد كان عام 2007 حافلا بالانجازات لشبكة التخطيط العمراني والتي كانت ثمرة توفيق الله وروح الفريق التي عملنا بها من خلف الكواليس. لم يكن فريق شبكة التخطيط العمراني يتكون من أعضاء عاديين بما تحمله …

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TREATMENT OF BELBAS WATER DRAIN USING CONSTRUCTED FREE SURFACE FLOW (FSF) AND FLOATING AQUATIC PLANTS (FAP)

للكاتب USAMA F. MAHMOOD Department of Civil Engineering , AL-AZHAR University, Cairo, Egypt . ABSTRACT The pilot-scale constructed wetland contains two cells (1) Free Surface Flow (FSF) and (2) Floating Aquatic Plant (FAP) for treatment of Belbas water drain. The treatment system consist of Free Surface Flow constructed wetland with loading rate and hydraulic residence time of 29.6 kg BOD …

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UTILIZATION OF ANNS FOR “MODELING THE MODEL” OF UASB

للكاتبين S. Bayoumi, K. Ewida, and D. Saad El-Din* Environmental Engineering Department, Faculty of Engineering, Zagazig University, Egypt. Abstract: The existence of strong non-linearity effects, time variant parameters and multivariable coupling don’t enable the adoption of simple models to predict either the wastewater treatment processes efficiency or its effluent quality. Nowadays, an Artificial Neural Networks (ANNs) is recognized as a …

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