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An Advanced FMRL Controller for FACTS Devices to Enhance Dynamic Performance of Power Systems

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International Journal of Automation and computing 2011年第3期8卷 309-316页

作者： Abdellatif Naceri Habib Hamdaoui mohamed abid IRECOM Laboratory Department of Electrical Engineering Djillali Liabes University of Sidi Bel-Abbes ICEPS Laboratory Department of Electrical Engineering Djillali Liabes University of Sidi Bel-Abbes

The parameters of power system slowly change with time due to environmental effects or may change rapidly due to faults. It is preferable that the control technique in this system possesses robustness for various fault conditions and disturbances. The used flexible alternating current transmission system （FACTS） in this paper is an advanced super-conducting magnetic energy storage （ASMES）. Many control techniques that use ASMES to improve power system stability have been proposed. While fuzzy controller has proven its value in some applications, the researches applying fuzzy controller with ASMES have been actively reported. However, it is sometimes very difficult to specify the rule base for some plants, when the parameters change. To solve this problem, a fuzzy model reference learning controller （FMRLC） is proposed in this paper, which investigates multi-input multi-output FMRLC for time-variant nonlinear system. This control method provides the motivation for adaptive fuzzy control, where the focus is on the automatic online synthesis and tuning of fuzzy controller parameters （i.e., using online data to continually learn the fuzzy controller that will ensure that the performance objectives are met）. Simulation results show that the proposed robust controller is able to work with nonlinear and nonstationary power system （i.e., single machine-infinite bus （SMIB） system）, under various fault conditions and disturbances.

关键词： Transient power system stability and robustness single machine-infinite bus (SMIB) system flexible alternating currenttransmission system (FACTS) advanced super-conducting magnetic energy storage (ASMES) fuzzy model reference learning controller(FMRLC) adaptive control learning controller.

Human Faces Detection and Tracking for Crowd Management in Hajj and Umrah

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Computers, Materials & Continua 2022年第6期71卷 6275-6291页

作者： Riad Alharbey Ameen Banjar Yahia Said mohamed Atri Abdulrahman Alshdadi mohamed abid Department of Information Systems and Technology College of Computer Science and EngineeringUniversity of JeddahJeddahSaudi Arabia Electrical Engineering Department College of EngineeringNorthern Border UniversityArarSaudi Arabia Laboratory of Electronics and Microelectronics(LR99ES30) Faculty of Sciences of MonastirUniversity of MonastirTunisia College of Computer Sciences King Khalid UniversityAbhaSaudi Arabia CES Laboratory ENISUniversity of SfaxTunisia

Hajj and Umrah are two main religious duties for *** help faithfuls to perform their religious duties comfortably in overcrowded areas,a crowd management system is a must to control the entering and exiting for each *** the number of people is very high,an intelligent crowd management system can be developed to reduce human effort and accelerate the management *** this work,we propose a crowd management process based on detecting,tracking,and counting human faces using Artificial Intelligence *** detection and counting will be performed to calculate the number of existing visitors and face detection and tracking will be used to identify all the humans for security *** proposed crowd management system is composed form three main parts which are:(1)detecting human faces,(2)assigning each detected face with a numerical identifier,(3)storing the identity of each face in a database for further identification and *** main contribution of this work focuses on the detection and tracking model which is based on an improved object detection *** improved Yolo v4 was used for face detection and *** has been very effective in detecting small objects in highresolution *** novelty contained in thismethod was the integration of the adaptive attention mechanism to improve the performance of the model for the desired *** wise attention mechanism was applied to the output layers while both channel wise and spatial attention was integrated in the building *** main idea from the adaptive attention mechanisms is to make themodel focus more on the target and ignore false positive *** demonstrated the efficiency of the proposed method through expensive experimentation on a publicly available *** wider faces dataset was used for the train and the evaluation of the proposed detection and tracking *** proposed model has achieved good results with 91.2%of mAP and a processing speed

关键词： Crowdmanagement Hajj and Umrah face detection object tracking convolutional neural networks(CNN) adaptive attention mechanisms

Experimental Study of Mineral Salts Concentration in Seawater

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Journal of Food Science and Engineering 2015年第1期5卷 44-47页

作者： Aroussia Jaouahdou abid mohamed Jomaa Safi Research Unit Mechanic-Energetic (URME) National Engineering School of Tunis University of Tunis-Manar Tunis 1002 Tunisia

Mineral salts are of great importance on the regulation of different metabolic activities of living organisms. The well-functioning of the body depends on mineral salts. These salts, existing naturally in small quantity in our diverse diets （grains, legumes, fruit, tea, egg, etc.）, are concentrated in seawater. In this paper, the indirect fi＇eezing is used as a concentration process to recover the most of salt minerals naturally present in seawater. Freezing is known as a purification process, but this paper recovers the brine instead of the formed ice. A 3.5% salinity solution with an appropriate setup is used to recover the maximum of salt in the brine. The work aims to develop a process for freezing salt concentration on cold walls. The influence of operating parameters has highlighted the important role of the cooling ramp and stay time on the salt concentration produced.

关键词： Mineral salts concentration freezing separation.

System-Level Performance Evaluation of Very High Complexity Media Applications : A H264/AVC Encoder Case Study

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International Journal of Communications, Network and System Sciences 2011年第7期4卷 436-446页

作者： Hajer Krichene Zrida Abderrazek Jemai Ahmed C Ammari mohamed abid 不详

Given the substantially increasing complexity of embedded systems, the use of relatively detailed clock cycle-accurate simulators for the design-space exploration is impractical in the early design stages. Raising the abstraction level is nowadays widely seen as a solution to bridge the gap between the increasing system complexity and the low design productivity. For this, several system-level design tools and methodologies have been introduced to efficiently explore the design space of heterogeneous signal processing systems. In this paper, we demonstrate the effectiveness and the flexibility of the Sesame/Artemis system-level modeling and simulation methodology for efficient peformance evaluation and rapid architectural exploration of the increasing complexity heterogeneous embedded media systems. For this purpose, we have selected a system level design of a very high complexity media application;a H.264/AVC (Advanced Video Codec) video encoder. The encoding performances will be evaluated using system-level simulations targeting multiple heterogeneous multiprocessors platforms.

关键词： System-Level Performance Evaluation Embedded Systems Design Space Exploration Tools the Sesame/Artemis Design Tool a Parallel H.264/AVC Video Encoder

Self-Assembly and Ordering of C60 on the WO2/W（110） Surface

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Nano Research 2011年第2期4卷 194-203页

作者： Sergey A. Krasnikov Sergey I. Bozhko Kevin Radican Olaf Lübben Barry E. Murphy Sundar-Raja Vadapoo Han-Chun Wu mohamed abid Valery N. Semenov lgor V. Shvets Centre tbr Research on Adaptive Nanostrucmres and Nanodevices （CRANN） School of Physics Trinity College Dublin Dublin 2 Ireland Institute of Solid State Physics Russian Academy of Sciences Chernogolovka Russian Federation King Abdullah Institute for Nanoteclmology College of Science King Saud University Riyadh 1145l Saudi Arabia

The growth and ordering of C60 molecules on the WO2/W（110） surface have been studied by low-temperature scanning tunnelling microscopy and spectroscopy （STM and STS）, low-energy electron diffraction （LEED）, and density functional theory （DFT） calculations. The results indicate the growth of a well-ordered C60 layer on the WO2/W（110） surface in which the molecules form a close-packed hexagonal structure with a unit cell parameter equal to 0.95 nm. The nucleation of the C60 layer starts at the substrate＇s inner step edges. Low-temperature STM of C60 molecules performed at 78 K demonstrates well-resolved molecular orbitals within individual molecules. In the C60 monolayer on the WO2/W（110） surface, the molecules are aligned in one direction due to intermolecular interaction, as shown by the ordered molecular orbitals of individual C60. STS data obtained from the C60 monolayer on the WO2/W（110） surface are in good agreement with DFT calculations.

关键词： Fullerenes self-assembly tungsten oxide low-temperature scanning tunnelling microscopy scanning tunnellingspectroscopy W(110)

A Comparison Study between Informed and Predictive Prefetching Mechanisms for I/O Storage Systems

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International Journal of Communications, Network and System Sciences 2015年第5期8卷 181-186页

作者： Maen M. Al Assaf Ali Rodan Mohammad Qatawneh mohamed Riduan abid King Abdullah II School for Information Technology The University of Jordan Amman Jordan Al Akhawayn University Ifrane Morocco

In this paper, we present a comparative study between informed and predictive prefetching mechanisms that were presented to leverage the performance gap between I/O storage systems and CPU. In particular, we will focus on transparent informed prefetching (TIP) and predictive prefetching using probability graph approach (PG). Our main objective is to show the main features, motivations, and implementation overview of each mechanism. We also conducted a performance evaluation discussion that shows a comparison between both mechanisms performance when using different cache size values.

关键词： Informed Prefetching Predictive Prefetching Probability Graph Parallel Storage Systems

A Fuzzy-PI control technique designed for Power Control of Wind Turbine based on Induction Generator

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A Fuzzy-PI control technique designed for Power Control of W...

Effects of P301L-TAU on post-translational modifications of microtubules in human iPSC-derived cortical neurons and TAU transgenic mice

The 2012 International Conference on Advanced Material and Manufacturing Science(ICAMMS 2012)

作者： Abdel Ghani.AISSAOUI Ahmed TAHOUR mohamed abid Najib ESSOUNBOULI Frederic NOLLET IRECOM Laboratory Departof Electrical EngeneeringUniversity of Sidi Bel Abbes

In this paper,we develop the overall model of the wind energy conversion systems（WECS） structure based on induction generator（IG）The goal of this paper is to control the power generated by the WECS and transmitted to the gridWe propose a new control strategy based on fuzzy logic in order to control the power of the WECSThe main drawback is that the WECS is highly nonlinearAn adaptive Fuzzy-PI power controller is proposed to overcome this problemA Simulation study is done to validate the strategy used in power control

关键词： Wind energy Induction generator fuzzy-PI control Power control

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Neural Regeneration Research 2025年第8期20卷 2348-2360页

作者： mohamed Aghyad Al Kabbani Christoph Köhler Hans Zempel Institute of Human Genetics Faculty of Medicine and University Hospital CologneUniversity of CologneCologneGermany Center for Molecular Medicine Cologne(CMMC) University of CologneCologneGermany Center Anatomy Department ⅡMedical FacultyUniversity of CologneCologneGermany

TAU is a microtubule-associated protein that promotes microtubule assembly and stability in the *** is missorted and aggregated in an array of diseases known as *** are essential for neuronal function and regulated via a complex set of post-translational modifications,changes of which affect microtubule stability and dynamics,microtubule interaction with other proteins and cellular structures,and mediate recruitment of microtubule-severing *** impairment of microtubule dynamics causes neuronal dysfunction,we hypothesize cognitive impairment in human disease to be impacted by impairment of microtubule *** therefore aimed to study the effects of a disease-causing mutation of TAU(P301L)on the levels and localization of microtubule post-translational modifications indicative of microtubule stability and dynamics,to assess whether P301L-TAU causes stability-changing modifications to *** investigate TAU localization,phosphorylation,and effects on tubulin post-translational modifications,we expressed wild-type or P301L-TAU in human MAPT-KO induced pluripotent stem cell-derived neurons(i Neurons)and studied TAU in neurons in the hippocampus of mice transgenic for human P301L-TAU(p R5 mice).Human neurons expressing the longest TAU isoform(2N4R)with the P301L mutation showed increased TAU phosphorylation at the AT8,but not the p-Ser-262 epitope,and increased polyglutamylation and acetylation of microtubules compared with endogenous TAU-expressing neurons.P301L-TAU showed pronounced somatodendritic presence,but also successful axonal enrichment and a similar axodendritic distribution comparable to exogenously expressed 2N4R-wildtype-TAU.P301L-TAU-expressing hippocampal neurons in transgenic mice showed prominent missorting and tauopathy-typical AT8-phosphorylation of TAU and increased polyglutamylation,but reduced acetylation,of microtubules compared with non-transgenic *** sum,P301L-TAU results in changes in micr

关键词： human induced pluripotent stem cell microtubules P301L pR5 mice TAU tauopathy tubulin code

Managing Software Testing Technical Debt Using Evolutionary Algorithms

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Computers, Materials & Continua 2022年第10期73卷 735-747页

作者： Muhammad abid Jamil mohamed K.Nour Department of Computer Science Umm Al-Qura UniversityMakkahSaudi Arabia

Technical debt(TD)happens when project teams carry out technical decisions in favor of a short-term goal(s)in their projects,whether deliberately or *** must be properly managed to guarantee that its negative implications do not outweigh its advantages.A lot of research has been conducted to show that TD has evolved into a common problem with considerable financial *** technical debt is the technical debt aspect of testing(or test debt).Test debt is a relatively new concept that has piqued the curiosity of the software industry in recent *** this article,we assume that the organization selects the testing artifacts at the start of every *** the latest features in consideration of expected business value and repaying technical debt are among candidate tasks in terms of the testing process(test cases increments).To gain the maximum benefit for the organization in terms of software testing optimization,there is a need to select the artifacts(i.e.,test cases)with maximum feature coverage within the available *** management of testing optimization for large projects is complicated and can also be treated as a multi-objective problem that entails a trade-off between the agile software’s short-term and long-term *** this article,we implement a multi-objective indicatorbased evolutionary algorithm(IBEA)for fixing such optimization *** capability of the algorithm is evidenced by adding it to a real case study of a university registration process.

关键词： Technical debt software testing optimization large scale agile projects evolutionary algorithms multiobjective optimization indicatorbased evolutionary algorithm(IBEA) pareto front