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Live Migration of Virtual Machines Using a Mamdani Fuzzy Inference System

Computers, Materials & Continua 2022年第5期71卷 3019-3033页

作者： Tahir Alyas Iqra Javed Abdallah Namoun Ali tufail Sami Alshmrany Nadia Tabassum Department of Computer Science Lahore Garrison UniversityLahore54000Pakistan Faculty of Computer and Information Systems Islamic University of MadinahMadinah42351Saudi Arabia Department of Computer Science Virtual University of PakistanLahore54000Pakistan

Efforts were exerted to enhance the live virtual machines(VMs)migration,including performance improvements of the live migration of services to the *** VMs empower the cloud users to store relevant data and ***,the utilization of servers has increased significantly because of the virtualization of computer systems,leading to a rise in power consumption and storage requirements by data centers,and thereby the running *** center migration technologies are used to reduce risk,minimize downtime,and streamline and accelerate the data center move ***,several parameters,such as non-network overheads and downtime adjustment,may impact the live migration time and server downtime to a large *** virtualizing the network resources,the infrastructure as a service(IaaS)can be used dynamically to allocate the bandwidth to services and monitor the network flow *** to the large amount of filthy retransmission,existing live migration systems still suffer from extensive downtime and significant performance degradation in crossdata-center *** study aims to minimize the energy consumption by restricting the VMs migration and switching off the guests depending on a threshold,thereby boosting the residual network bandwidth in the data center with a minimal breach of the service level agreement(SLA).In this research,we analyzed and evaluated the findings observed through simulating different parameters,like availability,downtime,and outage of VMs in data center *** new paradigm is composed of two forms of detection strategies in the live migration approach from the source host to the destination source machine.

关键词： Cloud computing IaaS data centre storage performance analysis live migration

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Highly aligned reduced graphene oxide in alumina composites for strengthening,toughening,and electromagnetic interference shielding

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Journal of Materiomics 2023年第6期9卷 993-1003页

作者： tufail Mustafa Yongping Liu Jie Gao Peng Yan Qi Ding Yuchi Fan Wan Jiang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai200050China Department of Chemical Engineering Balochistan University of Information TechnologyEngineering&Management Sciences(BUITEMS)Quetta87300Pakistan

Engineering ceramics with high strength,toughness and electromagnetic interference(EMI)shielding effectiveness(SE)are highly desirable as electromagnetic protecting material in harsh ***,we show that both excellent mechanical and EMI shielding performance can be realized in alumina composites embedded with highly aligned reduced graphene oxide(RGO),which are readily prepared via sintering of core-shell structured RGO@Al_(2)O_(3)nanoplates with *** to monolithic Al_(2)O_(3),the highly aligned RGO/Al_(2)O_(3)composites show simultaneously improved strength and toughness up to~26.1%and~60.2%,*** steeply rising R-curve behavior proves the better crack tolerance in the highly aligned structure with respect to randomly oriented ***,the RGO/Al_(2)O_(3)composites also exhibit a high specific EMI SE reaching~34 dB/mm in K band,due to the reflection and highly enhanced absorption after percolation in the out-of-plane *** findings provide a novel strategy of designing mechanically reliable engineering ceramic for EMI shielding.

关键词： Reduced graphene oxide Ceramic composites Strengthening Toughening Electromagnetic interference shielding

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Image-Based Automatic Energy Meter Reading Using Deep Learning

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Computers, Materials & Continua 2023年第1期74卷 203-216页

作者： Muhammad Imran Hafeez Anwar Muhammad tufail Abdullah Khan Murad Khan Dzati Athiar Ramli Institute of Computer Sciences and Information Technology Faculty of Management and Computer SciencesThe University of AgriculturePeshawarPakistan Department of Electrical and Computer Engineering COMSATS University IslamabadAttock CampusAttock CityPakistan Kuwait College of Science and Technology Kuwait CityKuwait School of Electrical&Electronic Engineering USM Engineering CampusUniversiti Sains MalaysiaPenang14300Malaysia

We propose to perform an image-based framework for electrical energy meter *** aim is to extract the image region that depicts the digits and then recognize them to record the consumed *** the readings of serial numbers and energy meter units,an automatic billing system using the Internet of Things and a graphical user interface is deployable in a real-time ***,such region extraction and character recognition become challenging due to image variations caused by several factors such as partial occlusion due to dust on the meter display,orientation and scale variations caused by camera positioning,and non-uniform illumination caused by *** this end,our work evaluates and compares the stateof-the art deep learning algorithm You Only Look Once(YOLO)along with traditional handcrafted features for text extraction and *** image dataset contains 10,000 images of electrical energymeters and is further expanded by data augmentation such as in-plane rotation and scaling tomake the deep learning algorithms robust to these image *** training and evaluation,the image dataset is annotated to produce the ground truth of all the ***,YOLO achieves superior performance over the traditional handcrafted features with an average recognition rate of 98%for all the *** proves to be robust against the mentioned image variations compared with the traditional handcrafted *** proposed method can be highly instrumental in reducing the time and effort involved in the currentmeter reading,where workers visit door to door,take images ofmeters and manually extract readings from these images.

关键词： Convolutional neural network object localization machine learning

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Electrode materials derived from plastic wastes and other industrial wastes for supercapacitors

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Chinese Chemical Letters 2020年第6期31卷 1474-1489页

作者： Wellars Utetiwabo Le Yang Muhammad Khurram tufail Lei Zhou Renjie Chen Yimeng Lian Wen Yang Key Laboratory of Cluster Science of Ministry of Education Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China School of Material Science and Engineering.Beijing Institute of Technology Beijing 100081China School of Education College of EducationUniversity of RwandaRwamaganaP.O.Box 55.Rwanda

The present review not only devotes on the environmental consequences of plastic bag wastes and other industrial wastes observable in the landfills,in the oceans or elsewhere but also gives a new insight idea on conversion of them into worth material,carbon,for the best electrochemical *** of plastic wastes into high-value materials is the incentive for plastic recycling,end-oflife handling case for plastic bag wastes in practice quite *** plastic recycling waste for reuse saves energy compared with manufacturing virgin ***,we identified several synthetic methods to convert plastic waste and other industrial wastes into carbon material for *** kinds of carbon materials,including nanofiber,nanotube,graphene,mesoporous carbon,etc.,have been derived from plastic waste,and thus give a superior potential for transforming trash into a"gold capacitor".Finally,conclusions and future trends of high-voltage supercapacitors were made as well as the easy and mass production of high-performance electrode materials for *** work offers a promising sustainable approach to handle plastic bags,waste,and other industrial wastes and provides a new avenue in supercapacitor applications and other areas.

关键词： Plastics waste Electrode materials Electrolyte High-voltage supercapacitor Electrical double layer

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A panoramic view of Li_(7)P_(3)S_(11) solid electrolytes synthesis, structural aspects and practical challenges for all-solid-state lithium batteries

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Chinese Journal of Chemical Engineering 2021年第11期34卷 16-36页

作者： Muhammad Khurram tufail Niaz Ahmad Le Yang Lei Zhou Muhammad Adnan Naseer Renjie Chen Wen Yang Key Laboratory of Cluster Science of Ministry of Education Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China School of Material Science and Engineering Beijing Institute of TechnologyBeijing 100081China Institute of Advanced Technology Beijing Institute of TechnologyJinan 250300China

The development of an inorganic electrochemical stable solid-state electrolyte is essentially responsible for future state-of-the-art all-solid-state lithium batteries(ASSLBs).Because of their advantages in safety,working temperature,high energy density,and packaging,ASSLBs can develop an ideal energy storage system for modern electric vehicles(EVs).A solid electrolyte(SE)model must have an economical synthesis approach,exhibit electrochemical and chemical stability,high ionic conductivity,and low interfacial *** to its highest conductivity of 17 mS·cm^(-1),and deformability,the sulfide-based Li_(7)P_(3)S_(11) solid electrolyte is a promising contender for the high-performance bulk type of ***,we present a current glimpse of the progress of synthetic procedures,structural aspects,and ionic conductivity improvement *** elucidation and mechanistic approaches have been extensively discussed by using various characterization *** chemical stability of Li_(7)P_(3)S_(11) could be enhanced via oxide doping,and hard and soft acid/base(HSAB)concepts are also *** issues to be undertaken for designing the ideal solid electrolytes,interfacial challenges,and high energy density have been *** review aims to provide a bird’s eye view of the recent development of Li_(7)P_(3)S_(11)-based solid-state electrolyte applications and explore the strategies for designing new solid electrolytes with a target-oriented approach to enhance the efficiency of high energy density allsolid-state lithium batteries.

关键词： Li_(7)P_(3)S_(11)solid electrolyte 30Li_(2)S-70P_(2)S_(5)glass ceramics Chemical stability Electrolyte/electrode interphase High energy density all-solid-state lithium batteries

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Gain-Enhanced Metamaterial Based Antenna for 5G Communication Standards

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Computers, Materials & Continua 2020年第9期64卷 1587-1599页

作者： Daniyal Ali Sehrai Fazal Muhammad Saad has.an Kiani Ziaul Haq Abbas Muhammad tufail Sunghwan Kim Department of Electrical Engineering City University of Science and Information TechnologyPeshawar25000Pakistan Faculty of Electrical Engineering Ghulam Ishaq Khan Institute of Engineering Sciences and TechnologyTopi23640Pakistan Department of Mechatronics Engineering University of Engineering and TechnologyPeshawar25000Pakistan School of Electrical Engineering University of UlsanUlsan44610Korea

Metamaterial surfaces play a vital role to achieve the surface waves suppression and in-phase reflection,in order to improve the antenna *** this paper,the performance comparison of a fifth generation(5G)antenna design is analyzed and compared with a metamaterial-based antenna for 5G communication system *** surface is utilized as a reflector due to its in-phase reflection characteristic and high-impedance nature to improve the gain of an *** conventional conducting ground plane does not give enough surface waves suppression which affects the antenna performance in terms of efficiency and gain *** factors are well considered in this work and improved by using the metamaterial *** radiating element of the proposed metamaterial based antenna is made up of copper material which is backed by the substrate,i.e.,Rogers-4003 with a standard thickness,loss tangent and a relative permittivity of 1.524 mm,0.0027 and 3.55,*** proposed antenna with and without metamaterial surface operates at the central frequency of 3.32 GHz and 3.60 GHz,*** traditional antenna yields a boresight gain of 2.76 dB which is further improved to 6.26 dB,using the metamaterial *** radiation efficiency of the proposed metamaterial-based 5G antenna is above 85%at the desired central frequency.

关键词： Metamaterial surface in-phase reflection 5G high gain

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Orderly defective superstructure for enhanced pseudocapacitive storage in titanium niobium oxide

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Nano Research 2022年第2期15卷 1570-1578页

作者： Le Yang Jinfeng Zeng Lei Zhou Ruiwen Shao Wellars Utetiwabo Muhammad Khurram tufail Saisai Wang Wen Yang Jiatao Zhang Key Laboratory of Cluster Science of Ministry of Education Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Advanced Innovation Center for Intelligent Robots and Systems and Institute of convergence in medicine and engineering Beijing institute of technologyBeijing 100081China Key Laboratory of Active Components of Xinjiang Natural Medicine and Drug Release Technology School of PharmacyXinjiang Medical UniversityUrumqi 830011China

Artificial defect engineering in transition metal oxides is of important terms for numerous *** the present work,we proposed an in-situ gas reduction strategy to introduce ordered defects into titanium niobium oxide embedding on vapor grew carbon fibers(Ti_(2)Nb_(10)O_(29-x)@VGCFs).High-resolution transmission electron microscopy(HRTEM)and fast Fourier transform(FFT)simulation indicate that the ordered oxygen defects locate at interval layers,which leads to a new superstructure in Ti_(2)Nb_(10)O_(29).The ordered defects could provide extra active sites for lithium-ion storage and modulate ionic migration,resulting an enhanced pseudocapacitive *** addition,the excellent structural stability of the superstructure was proved by in-situ HRTEM under a harsh electrochemical *** work provides a directly observation of orderly defective superstructure in transition metal oxide,and its functionality on electrochemistry was revealed.

关键词： Ti_(2)Nb_(10)O_(29) in-situ gas reduction ordered defect lithium-ion hybrid capacitor pseudocapacitance

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Effect of microstructural parameters on the properties of W-Ni-Fe alloys

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Rare Metals 2007年第3期26卷 200-204页

作者： S.H. Islam QU Xuanhui S.J. Askari M. tufail and HE Xinbo School of Materials Science and Engineering State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China Department of Industrial ＆ Manufacturing Engineering NED University of Engineering ＆ Technology Karachi-75270 Pakistan

The aim of this research was to examine the effect of microstructural parameters on the tensile properties of different compositions of tungsten heavy alloys. The microstructural parameters （grain size, connectivity, contiguity, and solid volume fraction） were measured and were found to have a significant effect on the tensile properties of tungsten-based heavy alloys. The microstructural parameters of W-Ni-Fe alloys are sufficiently different to present a range of mechanical properties. It is concluded that the mechanical properties of tungsten heavy alloys largely depend on the microstructural parameters and their ductility is particularly harmed when grains are contiguous.

关键词： tungsten heavy alloys tensile properties solid volume fraction contiguity

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Microwave-assisted synthesis of L-cysteine-capped nickel nanoparticles for catalytic reduction of 4-nitrophenol

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Rare Metals 2015年第10期34卷 683-691页

作者： Nazar Hussain Kalwar Ayman Nafady Razium Ali Soomro Sirajuddin Syed tufail Hussain Sherazi Abdul Rauf Khaskheli Keith Richard Hallam National Centre of Excellence in Analytical Chemistry University of Sindh Department of Chemistry College of ScienceKing Saud University Interface Analysis Centre School of PhysicsUniversity of Bristol Department of Pharmacy Shaheed Mohtarma Benazir Bhutto Medical University

A simple and efficient microwave-assisted procedure for synthesis of L-cysteine-capped nickel nanoparticles(cyst-Ni NPs) in ethylene glycol solvent was demonstrated. The as-synthesised NPs were characterised by ultraviolet–visible(UV–Vis) spectrophotometer, Fourier transform infrared(FTIR) spectroscopy, transmission electron microscopy(TEM) and X-ray diffractometry(XRD). The cyst-Ni NPs are proved to be excellent heterogeneous catalysts for the 100% reduction of 4-nitrophenol(4-NPh) in the presence of reductant(Na BH4)within reaction time of 40 s. In contrast, Raney nickel in similar sample environments shows only 25.5% *** kinetic and energetic behaviours of cyst-Ni NPs were also studied, and the reduction reaction is determined to follow pseudo-first-order kinetics with a rate constant value of 0.115 s-1 and activation energy of 36.1 kJ·mol-1. In addition to its high catalytic competence, cyst-Ni NPs catalyst exhibits excellent recyclability with negligible catalytic poisoning.

关键词： L-cysteine Nickel nanoparticles Catalyst Reduction

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Assessment of Primordial Radionuclides in Pakistani Red Bricks and Associated Radiation Doses

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Chinese Physics Letters 2010年第3期27卷 343-346页

作者： K. Khan A. Jabbar P. Akhter M. tufail H. M. Khan Health Physics Division PINSTECH P.O. Box 1482 Nilore Islamabad Pakistan Pakistan Institute of Engineering and Applied Sciences P.O. Nilore Islamabad Pakistan National Centre of Excellence in Physical Chemistry University of Peshawar Pakistan

Specific activity of primordial radionuclides and associated radiation hazards due to 40K, 226Ra, and 232Th have been measured in backed red brick samples, collected from five highly populated areas of the North West Frontier Province of Pakistan. For the detection, analysis and data acquisition, a high purity germanium detector was used. Associated external doses were calculated using a Monte Carlo neutron photon transport code. A theoretical model to determine the gamma dose rate at 1 m height from the floor, made of bricks, was employed for the calculation of mass attenuation coefficient and self-absorption in the floor for the gamma energies of these radionuclides and their progeny. Monte Carlo simulation shows that in this study the floor, having more than an effective thickness of 15 cm, contributes very little to the external gamma dose rate. The values of the external dose rate and annual effective dose are found to be much lower than the world average as well as from other countries of the world.

关键词： Accelerators beams and electromagnetism Nuclear physics Instrumentation and measurement Environmental and Earth science Particle physics and field theory Astrophysics and astroparticles

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