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Analytical Modeling of a Multi-queue Nodes Network Router

International Journal of Automation and computing 2011年第4期8卷 459-464页

作者： Hussein Al-Bahadili jafar ababneh Fadi Thabtah Faculty of Information Technology Petra University Amman Jordan Faculty of Information Technology and Sciences World Islamic Sciences and Education University Amman Jordan Faculty of Information Technology Philadelphia University Amman Jordan

This paper presents the derivation of an analytical model for a multi-queue nodes network router, which is referred to as the multi-queue nodes （mQN） model. In this model, expressions are derived to calculate two performance metrics, namely, the queue node and system utilization factors. In order to demonstrate the flexibility and effectiveness of the mQN model in analyzing the performance of an mQN network router, two scenarios are performed. These scenarios investigated the variation of queue nodes and system utilization factors against queue nodes dropping probability for various system sizes and packets arrival routing probabilities. The performed scenarios demonstrated that the mQN analytical model is more flexible and effective when compared with experimental tests and computer simulations in assessing the performance of an mQN network router.

关键词： Congested networks network routers active queue managements multi-queue nodes (mQN) systems analytical model- ing utilization factor.

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Optimal Allocation of STATCOM to Enhance Transient Stability Using Imperialist Competitive Algorithm

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Intelligent Automation & Soft Computing 2023年第6期36卷 3425-3446页

作者： Ayman Amer Firas MMakahleh jafar ababneh Hani Attar Ahmed Amin Ahmed Solyman Mehrdad Ahmadi Kamarposhti Phatiphat Thounthong Department of Energy Zarqa UniversityZarqa13133Jordan Department of Mechanical Engineering Al-Zaytoonah University of JordanAmman11733Jordan Abdul Aziz Al Ghurair School of Advanced Computing(ASAC) Luminus Technical University CollegeJordan Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran Renewable Energy Research Centre(RERC) Department of Teacher Training in Electrical EngineeringFaculty of Technical EducationKing Mongkut’s University of Technology North Bangkok1518Pracharat 1 RoadBangsueBangkok10800Thailand

With the daily expansion of global energy consumption,developing the power grids is of uttermost ***,building a new trans-mission line is costly and time-consuming,so utilizing the same lines with possible higher transmission capacity is very *** this regard,to increase the capacity of the transmission lines,the flexible alternating current transmission system(FACTS)has been widely used in power grids in recent years by industrialized *** of the essential topics in electrical power systems is the reactive power compensation,and the FACTS plays a significant role in controlling the reactive power current in the power grid and the system voltage oscillations and *** a static synchronous compensator(STATCOM)is embedded in a power system to increase the bus voltage,a supplementary damping controller can be designed to enhance the system oscillation *** the expansion of the grids in the power system,the complexity of their optimization and the extraordinary ability of the imperialist competitive algorithm(ICA)for solving such problems,in this paper,the ICA has been used to determine the optimal position and size of the FACTS devices.

关键词： STATCOM FACTS optimization transient stability imperialist competitive algorithm

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Early fault prediction and detection of hydrocephalus shunting system

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Journal of Biomedical Science and Engineering 2013年第3期6卷 280-290页

作者： Abdel Rahman Alkharabsheh Lina Momani Waleed Al-Nuaimy jafar ababneh Tariq Alwada’n Abeer Hawatmeh Department of Electrical Engineering University of Liverpool Liverpool UK Faculty of Science and Information Technology The World Islamic Sciences and Education Technology Amman Jordan Mechatronics Engineering Department Faculty of Engineering and Technology Al-Balqa’ Applied University Amman Jordan

Trends of various intracranial pressure (ICP) parameters for high pressure hydrocephalus patients are utilized to detect various shunt faults in their early stages, as well as, to monitor the effect of such faults on shunt performance. A method was proposed to predict the time required for ICP to be abnormal and for the valve to reach full blockage condition. Furthermore, an auto valve schedule updating method is proposed and used to temporarily deal with detected faults until the patient is checked up by his/her physician. The proposed algorithms were evaluated using numerical simulation.

关键词： Hydrocephalus Shunts Shunt Malfunctions Faults Detection

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