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Image Authenticity Detection Using DWT and Circular Block-Based LTrP Features

Computers, Materials & Continua 2021年第11期69卷 1927-1944页

作者： Marriam Nawaz Zahid mehmood Tahira Nazir Momina Masood Usman Tariq Asmaa Mahdi Munshi awais mehmood Muhammad Rashid Department of Computer Science University of Engineering and TechnologyTaxila47050Pakistan Department of Computer Engineering University of Engineering and TechnologyTaxila47050Pakistan College of Computer Engineering and Sciences Prince Sattam bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia College of Computer Science and Engineering University of JeddahJeddah21577Saudi Arabia Department of Computer Engineering Umm Al-Qura UniversityMakkah21421Saudi Arabia

Copy-move forgery is the most common type of digital image manipulation,in which the content from the same image is used to forge *** manipulations are performed to hide the desired ***,forgery detection methods are required to identify forged *** have introduced a novel method for features computation by employing a circular block-based method through local tetra pattern(LTrP)features to detect the single and multiple copy-move attacks from the *** proposed method is applied over the circular blocks to efficiently and effectively deal with the post-processing *** also uses discrete wavelet transform(DWT)for dimension *** obtained approximate image is distributed into circular blocks on which the LTrP algorithm is employed to calculate the feature vector as the LTrP provides detailed information about the image content by utilizing the direction-based relation of central pixel to its ***,Jeffreys and Matusita distance is used for similarity *** the evaluation of the results,three datasets are used,namely MICC-F220,MICC-F2000,and *** the qualitative and quantitative analysis shows that the proposed method exhibits state-of-the-art performance under the presence of post-processing operations and can accurately locate single and multiple copy-move forgery attacks on the images.

关键词： Copy-move forgery discrete wavelet transform LTrP features image forensic circular blocks

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Brain tumor localization and segmentation using mask RCNN

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Frontiers of Computer Science 2021年第6期15卷 199-201页

作者： Momina MASOOD Tahira NAZIR Marriam NAWAZ Ali JAVED Munwar IQBAL awais mehmood Department of Computer Science University of Engineering and TechnologyTaxila 47050Pakistan Department of Software Engineering University of Engineering and TechnologyTaxila 47050Pakistan

1 Introduction Brain tumor is a lethal disease affecting millions of people around the globe and has a high mortality *** identification and segmentation of brain tumor helps to increase the survival chances of the patient and also saves them from complex surgical ***,the precise segmentation of brain tumors facilitates the surgeon for better clinical development and cure.

关键词： mortality clinical precise

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基于固结磨粒的单晶蓝宝石自旋转磨削加工方法

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中国机械工程 2021年第16期32卷 2002-2007,2015页

作者：吴柯陆新明 mehmood awais 周立波袁巨龙宁波大学机械工程与力学学院宁波315000 茨城大学工学院日立316-8511 浙江工业大学超精密加工中心杭州310014

利用固结磨粒自旋转磨削加工方法,通过金刚石磨削和化学机械磨削实现了蓝宝石晶片的高效、高质量平坦化加工。采用不同磨粒粒径的金刚石砂轮实现了蓝宝石晶片较高的材料去除率或较好的表面质量。开发了高磨粒浓度Cr2O3砂轮,采用化学机... 详细信息

利用固结磨粒自旋转磨削加工方法,通过金刚石磨削和化学机械磨削实现了蓝宝石晶片的高效、高质量平坦化加工。采用不同磨粒粒径的金刚石砂轮实现了蓝宝石晶片较高的材料去除率或较好的表面质量。开发了高磨粒浓度Cr2O3砂轮,采用化学机械磨削对金刚石磨削后的蓝宝石晶片进行平坦化加工。实验结果表明,化学机械磨削能够去除金刚石磨削的表面和亚表面缺陷,最终获得表面粗糙度Ra<1 nm、无/微损伤的蓝宝石晶片。通过理论分析单颗金刚石磨粒的磨削力,发现磨粒粒径是影响材料去除率和表面质量的主要影响因素。通过XPS分析证明了Cr2O3和蓝宝石之间的固相反应过程。

关键词：金刚石磨削化学机械磨削表面质量材料去除率

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Signet Ring Cell Detection from Histological Images Using Deep Learning

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Computers, Materials & Continua 2022年第9期72卷 5985-5997页

作者： Muhammad Faheem Saleem Syed Muhammad Adnan Shah Tahira Nazir awais mehmood Marriam Nawaz Muhammad Attique Khan Seifedine Kadry Arnab Majumdar Orawit Thinnukool Department of Computer Science UETTaxila47050Pakistan Department of Computer Science HITEC University TaxilaTaxilaPakistan Faculty of Applied Computing and Technology Noroff University CollegeKristiansandNorway Department of Civil Engineering Imperial College LondonLondon SW72AZUK College of Arts Mediaand TechnologyChiang Mai UniversityChiang Mai 50200Thailand

Signet Ring Cell(SRC)Carcinoma is among the dangerous types of cancers,and has a major contribution towards the death ratio caused by cancerous *** and diagnosis of SRC carcinoma at earlier stages is a challenging,laborious,and costly *** detection of SRCs in a patient’s body through medical imaging by incorporating computing technologies is a hot topic of *** the presented framework,we propose a novel approach that performs the identification and segmentation of SRCs in the histological images by using a deep learning(DL)technique named Mask Region-based Convolutional Neural Network(Mask-RCNN).In the first step,the input image is fed to Resnet-101 for feature *** extracted feature maps are conveyed to Region Proposal Network(RPN)for the generation of the region of interest(RoI)proposals as well as they are directly conveyed to ***,RoIAlign combines the feature maps with RoI proposals and generates segmentation masks by using a fully connected(FC)network and performs classification along with Bounding Box(bb)generation by using FC *** annotations are developed from ground truth(GT)images to perform experimentation on our developed *** introduced approach achieves accurate SRC detection with the precision and recall values of 0.901 and 0.897 respectively which can be utilized in clinical *** aim to release the employed database soon to assist the improvement in the SRC recognition research area.

关键词： Mask RCNN deep learning SRC segmentation

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Systematic analysis of innate immune-related genes in the silkworm: Application to antiviral research

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INSECT SCIENCE 2025年第1期32卷 151-171页

作者： Xia, Junming Peng, Ruoxuan Fei, Shigang awais, Mian Muhammad Lai, Wenxuan Huang, Yigui Wu, Hailin Yu, Yue Liang, Lingying Swevers, Luc Sun, Jingchen Feng, Min South China Agr Univ Coll Anim Sci Guangdong Prov Key Lab Agroanim Genom & Mol Breedi Guangzhou Peoples R China Natl Ctr Sci Res Demokritos Inst Biosci & Applicat Insect Mol Genet & Biotechnol Athens Greece

The silkworm, a crucial model organism of the Lepidoptera, offers an excellent platform for investigating the molecular mechanisms underlying the innate immune response of insects toward pathogens. Over the years, researchers worldwide have identified numerous immune-related genes in silkworms. However, these identified silkworm immune genes are not well classified and not well known to the scientific community. With the availability of the latest genome data of silkworms and the extensive research on silkworm immunity, it has become imperative to systematically categorize the immune genes of silkworms with different database IDs. In this study, we present a meticulous organization of prevalent immune-related genes in the domestic silkworm, using the SilkDB 3.0 database as a reliable source for updated gene information. Furthermore, utilizing the available data, we classify the collected immune genes into distinct categories: pattern recognition receptors, classical immune pathways, effector genes and others. In-depth data analysis has enabled us to predict some potential antiviral genes. Subsequently, we performed antiviral experiments on selected genes, exploring their impact on Bombyx mori nucleopolyhedrovirus replication. The outcomes of this research furnish novel insights into the immune genes of the silkworm, consequently fostering advancements in the field of silkworm immunity research by establishing a comprehensive classification and functional understanding of immune-related genes in the silkworm. This study contributes to the broader understanding of insect immune responses and opens up new avenues for future investigations in the domain of host-pathogen interactions. In this study, we have collected and organized the immune genes associated with Bombyx mori nucleopolyhedrovirus (BmNPV) infection. We present a meticulous organization of prevalent immune-related genes in the domestic silkworm, using the SilkDB 3.0 database as a reliable source for updated

关键词： antiviral defense BmNPV Bombyx mori innate immunity SilkDB 3.0

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Reliable Task Offloading for 6G-Based IoT Applications

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Computers, Materials & Continua 2025年第2期82卷 2255-2274页

作者： Usman Mahmood Malik Muhammad awais Javed Ahmad Naseem Alvi Mohammed Alkhathami Department of Computer Software Engineering National University of Science and Technology(NUST)Islamabad44000Pakistan Department of Electrical and Computer Engineering COMSATS University IslamabadIslamabad45550Pakistan Information Systems Department College of Computer and Information SciencesImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11432Saudi Arabia

Fog computing is a key enabling technology of 6G systems as it provides quick and reliable computing,and data storage services which are required for several 6G *** Intelligence(AI)algorithms will be an integral part of 6G systems and efficient task offloading techniques using fog computing will improve their performance and *** this paper,the focus is on the scenario of Partial Offloading of a Task to Multiple Helpers(POMH)in which larger tasks are divided into smaller subtasks and processed in parallel,hence expediting task ***,using POMH presents challenges such as breaking tasks into subtasks and scaling these subtasks based on many interdependent factors to ensure that all subtasks of a task finish simultaneously,preventing resource ***,applying matching theory to POMH scenarios results in dynamic preference profiles of helping devices due to changing subtask sizes,resulting in a difficult-to-solve,externalities *** paper introduces a novel many-to-one matching-based algorithm,designed to address the externalities problem and optimize resource allocation within POMH ***,we propose a new time-efficient preference profiling technique that further enhances time optimization in POMH *** performance of the proposed technique is thoroughly evaluated in comparison to alternate baseline schemes,revealing many advantages of the proposed *** simulation findings indisputably show that the proposed matching-based offloading technique outperforms existing methodologies in the literature,yielding a remarkable 52 reduction in task latency,particularly under high workloads.

关键词： 6G IoT task offloading fog computing

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Particle size dependent sinterability and magnetic properties of recycled HDDR Nd-Fe-B powders consolidated with spark plasma sintering

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Journal of Rare Earths 2020年第1期38卷 90-99页

作者： awais Ikram Farhan mehmood Richard Stuart Sheridan Muhammad awais Allan Walton Anas Eldosouky Saso Sturm Spomenka Kobe Kristina Zuzek Rozman Department for Nanostructured Materials Jozef Stefan InstituteJamova 39SI-1000 LjubljanaSlovenia Jozef Stefan International Postgraduate School Jamova 39SI-1000 LjubljanaSlovenia School of Metallurgy and Materials University of BirminghamEdgbastonBirminghamB152TTUnited Kingdom Magneti Ljubljana d.d.Stegne 37SI-1000 LjubljanaSlovenia

The dependence of the magnetic properties on the particle size of recycled HDDR Nd-Fe-B powders was investigated,with the aim to assess the reprocessing potential of the end-of-life scrap magnets via spark plasma sintering(SPS).The as received recycled HDDR powder has coercivity(Hci)=830 kA/m and particles in the range from 30 to 700 μm(average 220 μm).After burr milling,the average particle size is reduced to 120 μm and subsequently the Hci of fine(milled) powder was 595 kA/*** plasma sintering was exploited to consolidate the nanograined HDDR powders and limit the abnormal grain *** optimal SPS-ing of coarse HDDR powder at 750℃for 1 min produces fully dense magnets with Hci=950±100 kA/m which further increases to 1200 kA/m via thermal treatment at 750℃for 15 *** burr milled fine HDDR powder under similar SPS conditions and after thermal treatment results in Hci=940 kA/*** fine powder is further sieved down from 630 to less than 50 μm mesh size,to evaluate the possible reduction in Hci in relation to the particle *** gain in oxygen content doubles for 200 μm).The XRD analysis for fractionated powder indicates an increase in Nd2O3 phase peaks in the finer(200 μm) to 460 kA/m in the fine sized particles(200 μm) is higher than 930 kA/m and it falls abruptly to just 70 kA/m for the fine sized particles(1000 kA/m only up to 100 μm sized fractions with>90% sintered *** full densification(>99%) is observed only in the coarse *** loss of coercivity and lack of sinterability in the fine sized particles(<100 μm) are attributed to a very high oxygen *** implies that durin

关键词： Reprocessing end-of life scrap Rare earth permanent magnets HDDR Nd2Fe14B Recycling Spark plasma sintering

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气流参数对多孔质空气静压轴承静态特性及性能影响研究

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宁波大学学报（理工版） 2023年第5期36卷 1-10页

作者：阿怀斯 MUHAMMAD PUNHAL Sahto FAWAD Jamil SUMMIA Perveen ALI NAWAZ Sanjrani 拉合尔大学机械工程系巴基斯坦拉合尔54000 宁波大学机械工程与力学学院浙江宁波315211 宁波大学海洋工程研究所浙江宁波315211 梅兰工程技术大学机械工程系巴基斯坦海尔普尔76062

空气静压轴承在精密机床和计量设备等制造业领域应用广泛.多孔质空气静压轴承是一种特殊类型的空气静压轴承,其由于使用了多孔质材料,因此更加稳定和坚固.目前针对这类轴承有关气流参数对轴承静态特性及性能影响的研究还较为欠缺.为此,... 详细信息

空气静压轴承在精密机床和计量设备等制造业领域应用广泛.多孔质空气静压轴承是一种特殊类型的空气静压轴承,其由于使用了多孔质材料,因此更加稳定和坚固.目前针对这类轴承有关气流参数对轴承静态特性及性能影响的研究还较为欠缺.为此,本文提出了一个数学模型用于模拟多孔质空气静压推力轴承的静态特性,包括承载能力、刚度及质量流率等.通过使用基于Navier-Stokes方程的计算,对轴承内部的压力分布进行了分析.随后,研究了对轴承静态特性可能产生影响的相关气流参数及其影响情况.研究结果表明,轴承气膜层厚度的增加会导致轴承承载能力和刚度的下降,但增加多孔质层的厚度可以提高轴承刚度.此外,增加气膜层厚度会使得进入轴承的空气质量流率得以提升.这些结果可用于帮助设计更为高效且能够承担更高负载的多孔质空气静压轴承.

关键词：多孔质静压推力轴承气膜厚度承载能力静态特性质量流率

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Thermophoresis and concentration effects in a fourth grade peristaltic flow with convective walls

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Journal of Central South University 2017年第7期24卷 1654-1662页

作者： Ali Aamir Asghar S awais M Department of Mathematics COMSATS Institute of Information TechnologyAttock 43600Pakistan Department of Mathematics COMSATS Institute of Information TechnologyIslamabad 44000Pakistan Department of Mathematics King Abdulaziz UniversityJeddah 21432Saudi Arabia

In this investigation,we have studied the peristaltic fluid flow in an asymmetric channel with convective *** grade fluid model has been utilized in view of the fact that the results of all other differential type models can be deduced as the special *** effects of heat and mass transfer are *** thermophoresis effects occur in the energy *** heat and mass boundary conditions have been given special *** wave length and low Reynolds number approximations are utilized for the *** analytic solutions for the velocity,temperature and concentration profiles are calculated using perturbation technique and elaborated in the form of graphical observations for various physical quantities.

关键词： fourth grade fluid convective boundary conditions pumping and trapping peristalsis

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A Novel Compact Highly Isolated UWB MIMO Antenna with WLAN Notch

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Computers, Materials & Continua 2023年第4期75卷 669-681页

作者： Muhammad awais Shahid Bashir awais Khan Muhammad Asif Nasim Ullah Hend I.Alkhammash Department of Electrical Engineering University of Engineering and TechnologyPeshawar25000Pakistan Department of Electrical Engineering University of Science and TechnologyBannu28100Pakistan Department of Electrical Engineering College of Engineering Taif UniversityAl-HawiyahTaifP.O.Box 888Saudi Arabia Department of Electrical Engineering College of EngineeringTaif UniversityP.O.Box 11099Taif21944Saudi Arabia

This paper presents a compact Multiple Input Multiple Output(MIMO)antenna with WLAN band notch for Ultra-Wideband(UWB)*** antenna is designed on 0.8mmthick low-cost FR-4 substrate having a compact size of 22mm×30 *** proposed antenna comprises of two monopole patches on the top layer of substrate while having a shared ground on its bottom *** mutual coupling between adjacent patches has been reduced by using a novel stub with shared ground *** stub consists of complementary rectangular slots that disturb the surface current direction and thus result in reducing mutual coupling between two ports.A slot is etched in the radiating patch for WLAN band *** slot is used to suppress frequencies ranging from 5.1 to 5.9 *** results show that the proposed antenna has a very good impedance bandwidth of|S11|9.98).

关键词： Multiple input multiple output(MIMO) ultra-wide band(UWB) defected ground structure envelope correlation coefficient diversity gain

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