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Genes & Diseases 2023年第6期10卷 2263-2266页

作者： Ikram ullah Muhammad Waqas Muhammad Ilyas Sobia Ahsan Halim Akmal Ahmad Natalia Dominik wahid ullah Muhammad Abbas Muhammad Aamir Henry Houlden Stephanie Efthymiou Ajmal Khan Ahmed Al-Harrasi Centre for Omic Sciences Islamia College University PeshawarPeshawarKhyber Pakhtunkhwa 25120Pakistan Department of Biotechnology and Genetic Engineering Hazara UniversityMansehraDhodial 21120Pakistan Natural and Medical Sciences Research Center University of NizwaNizwa 616Sultanate of Oman Department of Bioengineering University of Engineering and Applied SciencesSwatKhyber Pakhtunkhwa 19060Pakistan Department of Neuromuscular Disorders UCL Queen Square Institute of NeurologyLondon WC1N 3BGUnited Kingdom

Krabbe disease or globoid cell leukodystrophy(GLD;MIM#245200)is a rare and fatal lysosomal storage disease with an autosomal recessive mode of inheritance that results from the deficiency of galactocerebrosidase(GALC;E.C.3.***.1.46),a lysosomal enzyme encoded by the GALC gene.1 GALC breaks down galactosylceramide,a cerebroside located mainly in the myelin *** in GALC cause the accumulation of a cytotoxic metabolite,galactosylsphingosine or psychosine,which can be toxic to oligodendrocytes and Schwann cells.2 The failure to digest galactosylceramide triggers the formation of multi-nucleated globoid cells,causing severe demyelination,axonopathy,and neuronal death.3 The reported frequency of Krabbe disease is 1 in 100,000 live births with symptoms including irritability,loss of motor ability,spasticity,ataxia,visual dysfunction,seizures,andcognitive impairment.

关键词： dynamics birth GAL

Effective Video Summarization Approach Based on Visual Attention

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Computers, Materials & Continua 2022年第4期71卷 1427-1442页

作者： Hilal Ahmad Habib ullah Khan Sikandar Ali Syed Ijaz Ur Rahman Fazli wahid Hizbullah Khattak Department of Computer Sciences Islamia College Peshawar KhyberPakhtunkhwaPakistan Department of Accounting and Information Systems College of Business and EconomicsQatar UniversityDoha2713Qatar Department of Information Technology The University of HaripurKhyber PakhtunkhwaPakistan Department of Information Technology Hazara University MansehraKhyber PakhtunkhwaPakistan

Video summarization is applied to reduce redundancy and developa concise representation of key frames in the video, more recently, video summaries have been used through visual attention modeling. In these schemes,the frames that stand out visually are extracted as key frames based on humanattention modeling theories. The schemes for modeling visual attention haveproven to be effective for video summaries. Nevertheless, the high cost ofcomputing in such techniques restricts their usability in everyday *** this context, we propose a method based on KFE (key frame extraction)technique, which is recommended based on an efficient and accurate visualattention model. The calculation effort is minimized by utilizing dynamicvisual highlighting based on the temporal gradient instead of the traditionaloptical flow techniques. In addition, an efficient technique using a discretecosine transformation is utilized for the static visual salience. The dynamic andstatic visual attention metrics are merged by means of a non-linear weightedfusion technique. Results of the system are compared with some existing stateof-the-art techniques for the betterment of accuracy. The experimental resultsof our proposed model indicate the efficiency and high standard in terms ofthe key frames extraction as output.

关键词： KFE video summarization visual saliency visual attention model

Quality of Service Aware Cluster Routing in Vehicular Ad Hoc Networks

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Computers, Materials & Continua 2021年第6期67卷 3949-3965页

作者： Ishtiaq wahid Fasee ullah Masood Ahmad Atif Khan M.Irfan Uddin Abdullah Alharbi Wael Alosaimi Department of Computer Science Abdul Wali Khan University MardanMardan23200Pakistan Department of Computer and Information Technology Sarhad University of Science and Information TechnologyPeshawar25000Pakistan Department of Computer Science Islamia College PeshawarPeshawar25000Pakistan Institute of Computing Kohat University of Science and TechnologyKohat2600Pakistan Department of Information Technology College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

In vehicular ad hoc networks(VANETs),the topology information(TI)is updated frequently due to vehicle *** frequent changes in topology increase the topology maintenance *** reduce the control message overhead,cluster-based routing schemes are *** clusterbased routing schemes,the nodes are divided into different virtual groups,and each group(logical node)is considered a *** topology changes are accommodated within each cluster,and broadcasting TI to the whole VANET is not *** cluster head(CH)is responsible for managing the communication of a node with other nodes outside the ***,transmitting real-time data via a CH may cause delays in *** real-time data require quick service and should be routed through the shortest path when the quality of service(QoS)is *** paper proposes a hybrid scheme which transmits time-critical data through the QoS shortest path and normal data through *** this way,the real-time data are delivered efciently to the destination on ***,the routine data are transmitted through CHs to reduce the topology maintenance *** work is validated through a series of simulations,and results show that the proposed scheme outperforms existing algorithms in terms of topology maintenance overhead,QoS and real-time and routine packet transmission.

关键词： QoS VANETs routing real-time communication IoT

Systematic Geometric Error Modeling for Workspace Volumetric Calibration of a 5-axis Turbine Blade Grinding Machine

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Chinese Journal of Aeronautics 2010年第5期23卷 604-615页

作者： Abdul wahid Khan School of Mechanical Engineering and Automation Beijing University of Aeronautics and Astronautics

A systematic geometric model has been presented for calibration of a newly designed 5-axis turbine blade grinding machine. This machine is designed to serve a specific purpose to attain high accuracy and high efficiency grinding of turbine blades by eliminating the hand grinding process. Although its topology is RPPPR （P： prismatic; R： rotary）, its design is quite distinct from the competitive machine tools. As error quantification is the only way to investigate, maintain and improve its accuracy, calibra- tion is recommended for its performance assessment and acceptance testing. Systematic geometric error modeling technique is implemented and 52 position dependent and position independent errors are identified while considering the machine as five rigid bodies by eliminating the set-up errors of workpiece and cutting tool. 39 of them are found to have influential errors and are accommodated for finding the resultant effect between the cutting tool and the workpiece in workspace volume. Rigid body kinematics techniques and homogenous transformation matrices are used for error synthesis.

关键词： 5-axis machine tools calibration modeling geometric errors kinematics homogenous transformation matrices

A Bio-Inspired Routing Optimization in UAV-enabled Internet of Everything

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Computers, Materials & Continua 2021年第4期67卷 321-336页

作者： Masood Ahmad Fasee ullah Ishtiaq wahid Atif Khan M.Irfan Uddin Abdullah Alharbi Wael Alosaimi Department of Computer Science Abdul Wali Khan University MardanMardan23200Pakistan Department of Computer Science&Information Technology Sarhad University of Science and Information TechnologyPeshawar25000Pakistan Department of Computer Science Islamia College PeshawarPeshawar25000Pakistan Institute of Computing Kohat University of Science and TechnologyKohat26000Pakistan Department of Information Technology College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

Internet of Everything(IoE)indicates a fantastic vision of the future,where everything is connected to the internet,providing intelligent services and facilitating decision *** is the collection of static and moving objects able to coordinate and communicate with each *** moving objects may consist of ground segments and ying *** speed of ying segment e.g.,Unmanned Ariel Vehicles(UAVs)may high as compared to ground segment *** topology changes occur very frequently due to high speed nature of objects in UAV-enabled IoE(Ue-IoE).The routing maintenance overhead may increase when scaling the Ue-IoE(number of objects increases).A single change in topology can force all the objects of the Ue-IoE to update their routing ***,the frequent updating in routing table entries will result more energy dissipation and the lifetime of the Ue-IoE may *** objects consume more energy on routing *** prevent the frequent updation of routing tables associated with each object,the computation of routes from source to destination may be limited to optimum number of objects in the *** this article,we propose a routing scheme in which the responsibility of route computation(from neighbor objects to destination)is assigned to some IoE-objects in the *** route computation objects(RCO)are selected on the basis of certain parameters like remaining energy and *** RCO send the routing information of destination objects to their neighbors once they want to communicate with other *** proposed protocol is simulated and the results show that it outperform state-of-the-art protocols in terms of average energy consumption,messages overhead,throughput,delay etc.

关键词： UAV ying sensor network IoT IoE optimization routing

Adaptation of Vehicular Ad hoc Network Clustering Protocol for Smart Transportation

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Computers, Materials & Continua 2021年第5期67卷 1353-1368页

作者： Masood Ahmad Abdul Hameed Fasee ullah Ishtiaq wahid Atif Khan M.Irfan Uddin Shaq Ahmad Ahmed M.El-Sherbeeny Department of Computer Science Abdul Wali Khan University Mardan23200Pakistan Department of Computing and Technology Iqra UniversityIslamabadPakistan Department of Computer Science and Information Technology Sarhad University of Science and Information TechnologyPeshawar25000Pakistan Department of Computer Science Islamia College PeshawarPeshawar25000Pakistan Institute of Computing Kohat University of Science and TechnologyKohat2600Pakistan Department of Industrial Engineering College of EngineeringKing Saud UniversityRiyadh11421Saudi Arabia

Clustering algorithms optimization can minimize topology maintenance overhead in large scale vehicular Ad hoc networks(VANETs)for smart transportation that results from dynamic topology,limited resources and noncentralized *** performance of a clustering algorithm varies with the underlying mobility model to address the topology maintenance overhead issue in VANETs for smart *** design a robust clustering algorithm,careful attention must be paid to components like mobility models and performance objectives.A clustering algorithm may not perform well with every mobility ***,we propose a supervisory protocol(SP)that observes the mobility pattern of vehicles and identies the realistic Mobility model through microscopic *** analytical model can be used to determine an efcient clustering algorithm for a specic mobility model(MM).SP selects the best clustering scheme according to the mobility model and guarantees a consistent performance throughout VANET *** simulation has performed in three parts that is the central part simulation for setting up the clustering environment,In the second part the clustering algorithms are tested for efciency in a constrained atmosphere for some time and the third part represents the proposed *** simulation results show that the proposed scheme outperforms clustering algorithms such as honey bee algorithm-based clustering and memetic clustering in terms of cluster count,re-afliation rate,control overhead and cluster lifetime.

关键词： Cluster VANET smart transportation supervisory protocol mobility models

Entropy generation analysis for the peristaltic flow of Cu-water nanofluid in a tube with viscous dissipation

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Journal of Hydrodynamics 2017年第1期29卷 135-143页

作者： Noreen Sher Akbar Adil wahid Butt DBS&H CEMENational University of Sciences and TechnologyIslamabadPakistan DBS&H MCENational University of Sciences and TechnologyIslamabadPakistan

The purpose of the current investigation is to examine the influence of different physical parameters on the entropy gene- ration. The entropy generation number due to heat transfer and fluid friction is formulated. The velocity and temperature distributions across the tube are presented along with pressure attributes. Exact analytical solution for velocity and temperature profile is obtained. It is found that the entropy generation number attains high values in the region close to the walls of the tube, while it falls to low values near the center of the tube.

关键词： Entropy generation heat transfer nanofluid Cu-water uniform robe

Saudi cloud infrastructure: a security analysis

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Science China(Information Sciences) 2017年第12期60卷 152-164页

作者： wahid RAJEH Hai JIN Deqing ZOU Services Computing Technology and System Lab Big Data Technology and System LabCluster and Grid Computing Lab School of Computer Science and TechnologyHuazhong University of Science and Technology School of Computers and Information Technology University of Tabuk

The growing demand and dependence upon cloud services have garnered an increasing level of threat to user data and security. Some of such critical web and cloud platforms have become constant targets for persistent malicious attacks that attempt to breach security protocol and access user data and information in an unauthorized manner. While some of such security compromises may result from insider data and access leaks, a substantial proportion continues to remain attributed to security flaws that may exist within the core web technologies with which such critical infrastructure and services are developed. This paper explores the direct impact and significance of security in the Software Development Life Cycle(SDLC) through a case study that covers some 70 public domain web and cloud platforms within Saudi Arabia. Additionally, the major sources of security vulnerabilities within the target platforms as well as the major factors that drive and influence them are presented and discussed through experimental evaluation. The paper reports some of the core sources of security flaws within such critical infrastructure by implementation with automated security auditing and manual static code analysis. The work also proposes some effective approaches, both automated and manual, through which security can be ensured through-out the SDLC and safeguard user data integrity within the cloud.

关键词： cloud security vulnerability detection web security Saudi infrastructure cloud service

NFA:A neural factorization autoencoder based online telephony fraud detection

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Digital Communications and Networks 2024年第1期10卷 158-167页

作者： Abdul wahid Mounira Msahli Albert Bifet Gerard Memmi Department of Computer Sciences and Networks(INFRES) LTCITelecom ParisInstitut Polytechnique de ParisPalaiseau91120France Artificial Intelligence Institute The University of WaikatoPrivate Bag 31053240HamiltonNew Zealand

The proliferation of internet communication channels has increased telecom fraud,causing billions of euros in losses for customers and the industry each *** constantly find new ways to engage in illegal activity on the *** reduce these losses,a new fraud detection approach is *** fraud detection involves identifying a small number of fraudulent calls from a vast amount of call *** an effective strategy to combat fraud has become *** much effort has been made to detect fraud,most existing methods are designed for batch processing,not real-time *** solve this problem,we propose an online fraud detection model using a Neural Factorization Autoencoder(NFA),which analyzes customer calling patterns to detect fraudulent *** model employs Neural Factorization Machines(NFM)and an Autoencoder(AE)to model calling patterns and a memory module to adapt to changing customer *** evaluate our approach on a large dataset of real-world call detail records and compare it with several state-of-the-art *** results show that our approach outperforms the baselines,with an AUC of 91.06%,a TPR of 91.89%,an FPR of 14.76%,and an F1-score of 95.45%.These results demonstrate the effectiveness of our approach in detecting fraud in real-time and suggest that it can be a valuable tool for preventing fraud in telecommunications networks.

关键词： Telecom industry Streaming anomaly detection Fraud analysis Factorization machine Real-time system Security

Physiological Transportation of Casson Fluid in a Plumb Duct

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Communications in Theoretical Physics 2015年第3期63卷 347-352页

作者： Noreen Sher Akbar Adil wahid Butt DBS & H CEMENational University of Sciences and Technology

This paper is devoted to a study of the peristaltic motion of a Casson fluid of a non-Newtonian fluid accompanied in a horizontai *** characterize the non-Newtonian fluid behavior,we have considered the Casson fluid *** similarity transformations are utilized to transform the governing partial differential momentum into the non-linear ordinary differential *** analytical solutions of these equations are obtained and are the properties of velocity,pressure and profiles are then studied graphically.

关键词： Casson fluid peristalsis tube flow