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Articles by Ahmed N. Abdalla
Total Records ( 8 ) for Ahmed N. Abdalla
  Wissam H. Ali , Ahmed N. Abdalla and Wa'l H. Ali
  The increased interconnection density, bandwidth, nonlocality and fan-out-fan-in offered by optics over conventional electronic technologies make it a very attractive medium for a variety of application particularity in the field of communication system implementation for all types of computing engines is achieved. This is especially true for neural networks in which the demand for communication resources is extremely high. In this study, the implementation of a neural network that exploits an optical interconnect to perform a real task is described. A pnpn semiconductor device has been connected in parallel with a common load resistance for optical switching. When illuminated, only this device with maximum input will turn on. The voltages across the other devices drop and inhibit their switching ability. With suitable biasing, the winning device can be recall at any time. The result shows, a much faster response (< 10ns) can be obtained from thyristors made of III-V compound semiconductors, because their carrier lifetime is considerably shorter than in silicon. With III-V photothyristor, it is possible to combine light emission (even lasing) and photothyristor action in the same unit.
  Shant K. Avakian , Afaneen Anwar and Ahmed N. Abdalla
  A study was conducted to improve the Iraqi National Control center by adapting the facilities of the agent technology and to obtain an automated control system for controlling and monitoring the electrical network. This study presents simulation results of practical agent in power flow control scenario applied to the Iraqi super grid network (400 kV).
  Mohammad Affendy Omardin , Ahmed N. Abdalla , Mohd Helmi Suid and Noraziah Ahmad
  Problem statement: The waste pipes from the wash basin are always flow in with several waste form kitchen preparation. Due to time consideration the pipe may comes through blockage and need blockage maintenance. Approach: This study presented an invention for early warning blockage detection for a kitchen waste water drain pipe. The waste water pipe some be connected through vertical pipe runs which are usually embedded in the wall. The Fast Waste Water Blockage Detection (FWABET) is to create early detection of a blocked waste water level at kitchen appliances means for quick action knowing fluid flow passing through detector and indicates sign and alarm. Results: User society and country will be benefited from FWABET such as restaurants, slaughters house, hotels, hospitals, building developers and plumbing contractors. It is the first invention in Malaysia and can be adapt as a part of building services requirements. Conclusion: It is concluded that by apply the FWABET’s, it may reduce the costs and time of blockage waste water blockage drainage maintenance operations.
  Ahmed M.A. Haidar , Ibrahim A. Ahmed and Ahmed N. Abdalla
  Location of any Hybrid Micro-Grid System requires efficiently prediction of the electromagnetic field strength. This study proposes a novel Electromagnetic Field Strength (EFS) predication based on Probabilistic Neural Network (PNN). Learning data sets have been generated using Electromagnetic Transients Program EMTP. The PNN model has three input nodes representing the Switching Distance, Busbar Interference Voltage and Current waveforms, the output node representing the EFS. Testing datasets have deliberately been chosen outside the region of the learning datasets so as to check the performance of the neural network. The results indicate that the proposed technique can be used successfully to detect the maximum Electromagnetic Field Strength Level at any Location.
  Hatem Mostafa Elwalwal , Shahruddin Bin Hj. Mahzan and Ahmed N. Abdalla
  The Structural Health Monitoring (SHM) serves as an efficient and cost effective way to assist the guided wave study and the development of diagnostic algorithms before conducting time consuming experiments. In this paper introduce a review of Guided waves used for Structural Health Monitoring (SHM). Significant work has been done in guided wave modelling, guided wave generation and sensing and crack detection. In addition, presents the state of the art in these research areas with particular emphasis on guided waves in complex structures literature about guided waves and their applications in assessing the integrity of structures such as pipelines presented. Finally, the state of the art of Lamb-wave-based SHM technologies applied in pipeline structures, for the identification of crack and fatigue crack in science and industry.
  Bo Cheng , Ahmed N. Abdalla , Xi H uang , Tong han Lan and Jiarui Lin
  Highly considering the invariability of magnetic field strength in the Magnetic Field Generators, which used to stimulate rat's nerve cell, surely improve the stimulation performance outcome. A new technique to get an invariable magnetic field strength within Magnetic Field Generator has been proposed, Furthermore it had implemented on microcontroller-based system providing an Alternating Magnetic Field Generator (AMFG) with a high performance. The performance of the system is evaluated using two different methods. The results show that the errors are well and acceptable.
  Ali A. Ali Emhammed , Ahmed N. Abdalla , Ruhaizad Bin Ishak and Aqeel S. Jaber
  Some significant issue transmission lines protection in areas that have high renewable energy resources penetration especially wind power generation have defied the System Protection Scheme (SPS) designing these days. It is potentially, unavoidable to experience overloading problem during critical contingencies when a specific geographic area gathers around large wind generations. The primary focus of this study rests on creating an intelligent special protection and control scheme which integrates an intelligent strategy. Broadly speaking, the wind farms system stays far from the main center load based on the N-2 contingency indicating the loss of any (line, transformer and generator) seeking to ascertain the operating restrictions in different contexts. To address the issue of transmission lines overloading in high wind generation area for regulating the generation, the load is shed and system configuration changed in a reliable and efficient manner. The rationale for the proposed strategy will be experimented on a standard IEEE test system.
  Hazim Imad Hazim , Rosli Bin Omar , Imad Hazim Mohammed , Ahmed N. Abdalla , Marizan Bin Sulaiman and Mohammed Rasheed
  Estimation (SE) techniques play important rule to anticipate security possibilities and operation control. Optimizing SE gives a better quicker update on the state operation of the power system without nature of system modelling. In this study, distrusted power system state estimation based on firefly was proposed. Various scenarios including normal operation where centralized and decentralized power area introduced. The IEEE 13 bus systems tested and the results are compared with those obtained Weighted Lease Square (WLS) to demonstrate the validity of the proposed approach.
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