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Maintain Optimal Configurations for Large Configurable Systems Using Multi-Objective Optimization

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Computers, Materials & Continua 2022年第11期73卷 4407-4422页

作者： Muhammad Abid Jamil Deafallah Alsadie Mohamed K.Nour Normi Sham Awang abu bakar Department of Computer Science Umm Al-Qura UniversityMakkahSaudi Arabia Kulliyyah of Information and Communication Technology International Islamic UniversityMalaysia

To improve the maintenance and quality of software product lines,efficient configurations techniques have been ***,due to the complexity of derived and configured products in a product line,the configuration process of the software product line(SPL)becomes timeconsuming and *** product line consists of a various number of feature models that need to be *** different approaches have been presented by Search-based software engineering(SBSE)to resolve the software engineering issues into computational solutions using some metaheuristic ***,multiobjective evolutionary algorithms help to optimize the configuration process of *** this paper,different multi-objective Evolutionary Algorithms like Non-Dominated Sorting Genetic algorithms II(NSGA-II)and NSGA-III and Indicator based Evolutionary Algorithm(IBEA)are applied to different feature models to generate optimal results for large *** proposed approach is also used to generate the optimized test suites with the help of different multi-objective Evolutionary Algorithms(MOEAs).

关键词： Software product line search-based software engineering metaheuristic multiobjective evolutionary algorithms feature model

E-learning in Iran:Looking at Effectiveness via a Qualitative Study

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E-learning in Iran:Looking at Effectiveness via a Qualitativ...

Ethylene Conversion to Higher Hydrocarbon over Copper Loaded BZSM-5 in the Presence of Oxygen

2011 International Conference on Humanities,Society and Culture（ICHSC 2011）

作者： Elham Fariborzi Kamariah abu bakar Department of Educational Studies Mashhad BranchIslamic Azad University Faculty of Educational Studies Universiti Putra Malaysia

ISBN: (纸本)9789810899295

Developing learning through Information and Communication Technology with the advent of virtual universities and distance learning centers is one of the important issues for many countries world *** university and e-learning centers provide opportunities for e-learners to learn at their own speed and style of *** Iran,e-learning has grown considerably in recent *** is no doubt about the advantages of e-learning,but the method of implementation of this kind of learning needs to take care of the variables which may improve its *** purpose of this qualitative study was to identify factors that affect the effectiveness of web-based courses from the perspective of administrators,instructors and staff working in e-learning centers in Iran’s *** with key informants and reviews of library resources were used in this *** data obtained were analyzed using qualitative analysis *** findings show that there were not enough attention being given to the quality of ecourses and its *** effectiveness of e-courses should be increased with more coordination and cooperation among instructors,students and staff working at e-learning centers.

关键词： Distance education E-learning Web-based learning Learning effectiveness Effectiveness

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Journal of Natural Gas Chemistry 2006年第4期15卷 259-265页

作者： Ramli Mat Nor Aishah Saidina Amin Zainab Ramli W.Azelee W.abu bakar Dept.of Chemical Engineering Faculty of Chemical & Natural Resources EngineeringUniversiti Teknologi MalaysiaSkudai81310 Johor BahruMalaysia Dept.of Chemistry Universiti Teknologi MalaysiaSkudai81310 Johor BahruMalaysia

The successful production of higher hydrocarbons from methane depends on the stability or the oxidation rate of the intermediate products. The performances of the BZSM-5 and the modified BZSM-5 catalysts were tested for ethylene conversion into higher hydrocarbons. The catalytic experiments were carried out in a fixed-bed micro reactor at atmospheric pressure. The catalysts were characterized using XRD, NH3-TPD, and IR for their structure and acidity. The result suggests that BZSM-5 is a weak acid. The introduction of copper into BZSM-5 improved the acidity of BZSM-5. The conversion of ethylene toward higher hydrocarbons is dependent on the acidity of the catalyst. Only weaker acid site is required to convert ethylene to higher hydrocarbons. The loading of Cu on BZSM-5 improved the selectivity for higher hydrocarbons especially at low percentage. The reactivity of ethylene is dependent on the amount of acidity as well as the presence of metal on the catalyst surface. Cul%BZSM-5 is capable of converting ethylene to higher hydrocarbons. The balances between the metal and acid sites influence the performance of ethylene conversion and higher hydrocarbon selectivity. Higher loading of Cu leads to the formation of COx.

关键词： ethylene conversion BZSM-5 zeolite acidity higher hydrocarbon

Interference-Aware Multipath Routing Protocol for QoS Improvement in Event-Driven Wireless Sensor Networks

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Tsinghua Science and Technology 2011年第5期16卷 475-490页

作者： Marjan Radi Behnam Dezfouli Kamalrulnizam abu bakar Shukor Abd Razak Mohammad Ali Nematbakhsh Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia Faculty of Computer Engineering University of Isfahan

The existing multipath routing protocols for wireless sensor networks demonstrate the efficacy of traffic distribution over multiple paths to fulfill the Quality of Service （QoS） requirements of different applications. However, the performance of these protocols is highly affected by the characteristics of the wireless channel and may be even inferior to the performance of single-path approaches. Specifically, when multiple adjacent paths are being used concurrently, the broadcast nature of wireless channels results in inter-path interference which significantly degrades end-to-end throughput. In this paper, we propose a Low- Interference Energy-efficient Multipath Routing protocol （LIEMRO） to improve the QoS requirements of event-driven applications. In addition, in order to optimize resource utilization over the established paths, LIEMRO employs a quality-based load balancing algorithm to regulate the amount of traffic injected into the paths. The performance gain of LIEMRO compared to the ETX-based single-path routing protocol is 85%, 80%, and 25% in terms of data delivery ratio, end-to-end throughput, and network lifetime, respectively. Furthermore, the end-to-end latency is improved more than 60%.

关键词： LIEMRO QoS load balancing interference multipath routing event-driven

Application of stem cells in tissue engineering for defense medicine

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Military Medical Research 2018年第2期5卷 140-158页

作者： Chinedu Cletus Ude Azizi Miskon Ruszymah Bt Hj Idrus Muhamad Bin abu bakar Bio-artifical Organ and Regenerative Medicine Unit National Defence University of MalaysiaSungai Besi Camp57000 Kuala LumpurMalaysia Department of Physiology Pre-clinical BlockNational University of Malaysia Medical CentreJalan Yaacob LatifBandar Tun Razak56000 Kuala LumpurMalaysia

The dynamic nature of modern warfare,including threats and injuries faced by soldiers,necessitates the development of countermeasures that address a wide variety of *** engineering has emerged as a field with the potential to provide contemporary *** this review,discussions focus on the applications of stem cells in tissue engineering to address health risks frequently faced by combatants at *** development depends intimately on stem cells,the mysterious precursor to every kind of cell in the body that,with proper instruction,can grow and differentiate into any new tissue or *** reports have suggested the greater therapeutic effects of the anti-inflammatory,trophic,paracrine and immune-modulatory functions associated with these cells,which induce them to restore normal healing and tissue regeneration by modulating immune reactions,regulating inflammation,and suppressing ***,the use of stem cells holds significant promise for the treatment of many battlefield injuries and their *** applications include the treatment of injuries to the skin,sensory organs,nervous system tissues,the musculoskeletal system,circulatory/pulmonary tissues and genitals/testicles and of acute radiation syndrome and the development of novel *** new research developments in these areas suggest that solutions are being developed to reduce critical consequences of wounds and exposures suffered in *** military applications of stem cell-based therapies are already saving the lives of soldiers who would have died in previous *** that would have resulted in deaths previously now result in wounds today;similarly,today’s permanent wounds may be reduced to tomorrow’s bad memories with further advances in stem cell-based therapies.

关键词： Tissue engineering Defense medicine Stem cells War injuries

Catalytic methanation reaction over alumina supported cobalt oxide doped noble metal oxides for the purification of simulated natural gas

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燃料化学学报 2012年第7期40卷 822-830页

作者： Wan Azelee Wan abu bakar Rusmidah Alil Abdul Aziz Abdul Kadir Salmiah Jamal Mat Rosid Nurul Shafeeqa Mohammad Department of Chemistry Faculty of Science Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia Faculty of Petroleum and Renewable Energy Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

A series of alumina supported cobalt oxide based catalysts doped with noble metals such as ruthenium and platinum were prepared by wet impregnation *** variables studied were difference ratio and calcination ***/Co(10∶90)/Al2O3 catalyst calcined at 700 ℃ was found to be the best catalyst which able to convert 70.10% of CO2 into methane with 47% of CH4 formation at maximum temperature studied of 400 ℃.X-ray diffraction analysis showed that this catalyst possessed the active site Co3O4 in face-centered cubic and PtO2 in the orthorhombic phase with Al2O3 existed in the cubic *** to the FESEM micrographs,both fresh and spent Pt/Co(10∶90)/Al2O3 catalysts displayed small particle size with undefined *** Adsorption analysis showed that 5.50% reduction of the total surface area for the spent Pt/Co(10∶90)/Al2O3 ***,Energy Dispersive X-ray analysis(EDX) indicated that Co and Pt were reduced by 0.74% and 0.14% respectively on the spent Pt/Co(10∶90)/*** using FT-IR and TGA-DTA analysis revealed the existence of residual nitrate and hydroxyl compounds on the Pt/Co(10∶90)/Al2O3 catalyst.

关键词： natural gas cobalt oxide noble metal catalyst methanation reaction

Advances on ultra-sensitive electrospun nanostructured electrochemical and colori metric sensors for diabetes mellitus detection

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Nano Materials Science 2021年第4期3卷 321-343页

作者： Mohamed Hasaan Hussain Lim Ping Fook Maria Kana Sanira Putri Huey Ling Tan Noor Fitrah abu bakar Norbert Radacsi School of Chemical Bngineering College of Engineering University Teknologi MARA 40450 Shah AlamSelangorMalaysia School of Engineering Institute for Materials and ProcessesThe University of EdinburghRobert Stevenson RoadEdinburghEH93FBUnited Kingdom

Recent developments in the biochemical and medicinal industries have been heavily focused on producing affordable glucose biosensors due to the condi nuous annual increase of diabetic patients *** devel-opment of a fast,accurate,and reliable glucose sensor will increase confidence in controlling di abetes mellitus and its assoclated health complications among the diabetic *** is a versatile method that can produce complex nanofbrous assemblies with attractiwe and functional characteristics from varlous *** nanofibers demonstrated high efficiency in the immobilization of biological molecules,which can improve the sensing performance *** ation of polymer electrospun nanofibers with metal nanoparticles,metal oxde or transition metal in producing nanobiocomposites is also a highly popul ar approach in the past few *** report presents the current progress and research trends of the technique,focusing on varous ma-terials and fabrication strategies used to produce biosensing *** helps readers decide the suitable approach in designing highly sensitive,selective,fast,and inexpensive glucose sensors.

关键词： Glucose sensor Electrospinning Nanofiber Electrochemical sensing Colorimetric sensing

Computerised Development Control and Approval System for City Hall of Kuala Lumpur

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Geo-Spatial Information Science 2004年第1期7卷 39-49页

作者： Ahris Yaakup Yazid abu bakar Mohd Nuruddin Abdul Kadir Susilawati Sulaiman Department of Urbanand Regional Planning Faculty of Built Environment

This paper will discuss the computerised developm en t control and approval system being developed for the Planning and Development C ontrol Department, City Hall of Kuala Lumpur, with stress on the GIS architectur e ... 详细信息

关键词： GIS architecture computerised development control and approval system Cityhall of Kuala lumpur

Microwave sintering effects on the microstructure and mechanical properties of Ti–51at%Ni shape memory alloys

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International Journal of Minerals,Metallurgy and Materials 2017年第3期24卷 280-288页

作者： Mustafa K. Ibrahim E. Hamzah Safaa N. Saud E. N. E. abu bakar A. Bahador Faculty of Mechanical Engineering Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia Faculty of Information Sciences and Engineering Management & Science University Shah Alam Selangor Malaysia

Ti–51at%Ni shape memory alloys(SMAs) were successfully produced via a powder metallurgy and microwave sintering *** influence of sintering parameters on porosity reduction,microstructure,phase transformation temperatures,and mechanical properties were investigated by optical microscopy,field-emission scanning electron microscopy(FE-SEM),X-ray diffraction(XRD),differential scanning calorimetry(DSC),compression tests,and microhardness *** the microwave temperature and holding time was found to strongly affect the density of porosity,presence of precipitates,transformation temperatures,and mechanical *** lowest density and smallest pore size were observed in the Ti–51at%Ni samples sintered at 900°C for 5 min or at 900°C for 30 *** predominant martensite phases of β2 and β19′ were observed in the microstructure of Ti–51at%Ni,and their existence varied in accordance with the sintering temperature and the holding *** the DSC thermograms,multi-transformation peaks were observed during heating,whereas a single peak was observed during cooling;these peaks correspond to the presence of the β2,R,and β19′ *** maximum strength and strain among the Ti–51at%Ni SMAs were 1376 MPa and 29%,respectively,for the sample sintered at 900°C for 30 min because of this sample's minimal porosity.

关键词： titanium nickel alloys shape memory effect powder metallurgy (PM) microwave heating sintering microstructure mechanical properties