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Influences of Marangoni convection and variable magnetic field on hybrid nanofluid thin-film flow past a stretching surface

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Chinese Physics B 2022年第6期31卷 494-501页

作者： Noor Wali khan arshad khan Muhammad Usman Taza Gul Abir Mouldi Ameni Brahmia Department of Mathematics City University of Science and ITPeshawar 25000Pakistan College of Aeronautical Engineering National University of Sciences and Technology(NUST)Sector H-12Islamabad 44000Pakistan Higher Education Archives and Libraries Department KP Govt.Superior Science CollegePeshawarPakistan Department of Industrial Engineering College of EngineeringKing Khalid UniversityAbha 61421KSA Chemistry Department College of ScienceKing Khalid UniversityAbha 61413Saudi Arabia

Investigations on thin-film flow play a vital role in the field of optoelectronics and magnetic *** films are reasonably hard and thermally stable but quite *** thermal stability of a thin film can be further improved by incorporating the effects of *** the current work,a stretchable surface is considered upon which hybrid nanofluid thin-film flow is taken into *** idea of augmenting heat transmission by making use of a hybrid nanofluid is a focus of the current *** flow is affected by variations in the viscous forces,along with viscous dissipation effects and Marangoni convection.A time-constrained magnetic field is applied in the normal direction to the flow *** equations governing the flow system are shifted to a non-dimensional form by applying similarity *** homotopy analysis method is employed to find the solution to the resultant *** is noticed in this study that the flow characteristics decline with augmentation of magnetic,viscosity and unsteadiness parameters while they increase with enhanced values of thin-film *** characteristics are supported by increasing values of the Eckert number and the unsteadiness parameter and opposed by the viscosity parameter and Prandtl *** numerical impact of different emerging parameters upon skin friction and the Nusselt number is calculated in tabular form.A comparison of current work with established results is carried out,with good agreement.

关键词： thin-film flow hybrid nanofluid viscous dissipation stretching surface homotopy analysis method

Automatic Real-Time Medical Mask Detection Using Deep Learning to Fight COVID-19

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Computer Systems Science & Engineering 2022年第9期42卷 1181-1198页

作者： Mohammad Khalid Imam Rahmani Fahmina Taranum Reshma Nikhat Md.Rashid Farooqi Mohammed arshad khan College of Computing and Informatics Saudi Electronic UniversityRiyadhSaudi Arabia Computer Science and Engineering Department Muffakham Jah College of Engineering and TechnologyOsmania UniversityHyderabadTelanganaIndia Department of Commerce and Business Management Maulana Azad National Urdu UniversityHyderabadTelanganaIndia Department of Accountancy College of Administrative and Financial SciencesSaudi Electronic UniversityRiyadSaudi Arabia

The COVID-19 pandemic is a virus that has disastrous effects onhuman lives globally;still spreading like wildfire causing huge losses to humanityand economies. There is a need to follow few constraints like social distancingnorms, personal hygiene, and masking up to effectively control the virus *** proposal is to detect the face frame and confirm the faces are properly covered with masks. By applying the concepts of Deep learning, the results obtainedfor mask detection are found to be effective. The system is trained using4500 images to accurately judge and justify its accuracy. The aim is to developan algorithm to automatically detect a mask, but the approach does not facilitatethe percentage of improper usage. Accuracy levels are as low as 50% if the maskis improperly covered and an alert is raised for improper placement. It can be usedat traffic places and social gatherings for the prevention of virus transmission. Itworks by first locating the region of interest by creating a frame boundary, thenfacial points are picked up to detect and concentrate on specific features. Thetraining on the input images is performed using different epochs until the artificialface mask detection dataset is created. The system is implemented using TensorFlow with OpenCV and Python using a Jupyter Notebook simulation environment. The training dataset used is collected from a set of diverse open-sourcedatasets with filtered images available at Kaggle Medical Mask Dataset by Mikolaj Witkowski, Kera, and Prajna Bhandary. To simulate MobilNetV2 classifier isused to load and pre-process the image dataset for building a fully connectedhead. The objective is to assess the accuracy of the identification, measuringthe efficiency and effectiveness of algorithms for precision, recall, and F1 score.

关键词： COVID-19 pandemic convolution neural network deep learning face detection facemask detection global health machine learning

Predicting Age and Gender in Author Profiling: A Multi-Feature Exploration

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Computers, Materials & Continua 2024年第5期79卷 3333-3353页

作者： Aiman Muhammad arshad Bilal khan Sadique Ahmad Muhammad Asim Department of Computer Science City University of Science and Information TechnologyPeshawar25000Pakistan EIAS:Data Science and Blockchain Laboratory College of Computer and Information SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia School of Computer Science and Technology Guangdong University of TechnologyGuangzhou510006China

Author Profiling (AP) is a subsection of digital forensics that focuses on the detection of the author’s personalinformation, such as age, gender, occupation, and education, based on various linguistic features, e.g., stylistic,semantic, and syntactic. The importance of AP lies in various fields, including forensics, security, medicine, andmarketing. In previous studies, many works have been done using different languages, e.g., English, Arabic, French,***, the research on RomanUrdu is not up to the ***, this study focuses on detecting the author’sage and gender based on Roman Urdu text messages. The dataset used in this study is Fire’18-MaponSMS. Thisstudy proposed an ensemble model based on AdaBoostM1 and Random Forest (AMBRF) for AP using multiplelinguistic features that are stylistic, character-based, word-based, and sentence-based. The proposed model iscontrasted with several of the well-known models fromthe literature, including J48-Decision Tree (J48),Na飗e Bays(NB), K Nearest Neighbor (KNN), and Composite Hypercube on Random Projection (CHIRP), NB-Updatable,RF, and AdaboostM1. The overall outcome shows the better performance of the proposed AdaboostM1 withRandom Forest (ABMRF) with an accuracy of 54.2857% for age prediction and 71.1429% for gender predictioncalculated on stylistic features. Regarding word-based features, age and gender were considered in 50.5714% and60%, respectively. On the other hand, KNN and CHIRP show the weakest performance using all the linguisticfeatures for age and gender prediction.

关键词： Digital forensics author profiling for security AdaBoostM1 random forest ensemble learning

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巴阿关系在美国撤军后的展望

巴阿关系在美国撤军后的展望

作者： arshad khan 吉林大学

学位级别：硕士

探索巴基斯坦和阿富汗之间复杂而具有挑战性的关系一直是南亚地区最关键的问题之一。这项研究旨在调查2001年至2021年美国从阿富汗撤军后改善阿富汗与巴基斯坦关系的潜力。美军从阿富汗撤军为重塑阿富汗-巴基斯坦关系的未来创造了机会,... 详细信息

探索巴基斯坦和阿富汗之间复杂而具有挑战性的关系一直是南亚地区最关键的问题之一。这项研究旨在调查2001年至2021年美国从阿富汗撤军后改善阿富汗与巴基斯坦关系的潜力。美军从阿富汗撤军为重塑阿富汗-巴基斯坦关系的未来创造了机会,开启了南亚地区历史的新篇章。2001年,受在美国纽约市世贸中心爆发的9·11恐怖袭击的影响,以美国为首的联军入侵阿富汗,目的是消灭在该国避难的塔利班政府和基地组织的恐怖分子。巴基斯坦与阿富汗的边界漏洞,成为美国领导的反恐战争的重要参与者。受历史、文化、种族和政治差异等多种因素的影响,使巴基斯坦与阿富汗之间的关系变得复杂。阿富汗一直指责巴基斯坦为塔利班武装分子提供庇护,并支持塔利班武装分子进行反对阿富汗政府的叛乱活动。相反,巴基斯坦指责阿富汗为俾路支分裂分子和巴基斯坦塔利班组织(TTP)这类反巴基斯坦激进分子提供避难所。美国领导的阿富汗战争给巴基斯坦与阿富汗之间的关系带来了新的活力。巴基斯坦在支持美国领导的联军在阿富汗的军事行动方面发挥了关键作用,它支持了联军在阿富汗的军事行动。然而,巴基斯坦对美国领导的战争的支持遭到了美国和阿富汗的批评,因为该国在消除其部落地区的塔利班保护区方面做得不够好。20年来,由美国领导的联军在阿富汗进行了军事行动,为这场冲突投入了大量的军事力量和物质资源。尽管做出了这些努力,但随着塔利班的叛乱活动变得越来越猖狂,阿富汗政府仍然表现得软弱和分裂,阿富汗冲突并没有得到持久性的解决。2021年,美国宣布计划从阿富汗撤军,这标志着美国对阿富汗漫长的军事干预的结束。这次撤军给阿富汗与巴基斯坦的双边关系带来了一系列新的挑战和机遇。塔利班现在已经控制了阿富汗,组建了一个新的政府。巴基斯坦主张在阿富汗建立一个包容性的政府,所有少数民族和政治集团都参与其中。美国撤军后,阿富汗与巴基斯坦关系的前景取决于很多因素。其中最关键的因素之一是塔利班与巴基斯坦的联系。巴基斯坦一直与塔利班保持着密切的联系,并被指控为塔利班提供庇护和支持。然而,塔利班的掌权给巴基斯坦带来了新的挑战。阿富汗塔利班政府在妇女权利和国际关系等问题上的政策预计会受到国际社会的审查,而巴基斯坦与塔利班的联系可能会变得更加复杂。此外,阿富汗政府对巴基斯坦的立场也将影响双边关系的走向。过去,阿富汗政府曾指责巴基斯坦协助塔利班叛乱,使两国关系紧张。塔利班政府与巴基斯坦的关系可能会影响阿富汗政府在巴基斯坦上的立场,一个友好的塔利班政府可能会实现两国关系的改善。最后,中国和印度等地区参与者的作用将有助于塑造阿富汗与巴基斯坦关系的未来。这两个国家在该地区具有重大的经济和战略利益,并参与了旨在促进阿富汗稳定和发展的各种国际倡议。中国在该地区发挥着关键作用,在阿富汗投资了多个基础设施项目。巴基斯坦和阿富汗之间的关系是错综复杂的,充满了历史和地缘政治的复杂性。在过去的20年里,美国一直在积极参与该地区,特别是在阿富汗,自2001年以来,美国的军事存在一直是阿富汗冲突的关键性特征。然而,随着美国最近从阿富汗撤军,在美国撤军时期审视阿富汗与巴基斯坦关系的前景至关重要。2001年美国入侵阿富汗,对阿富汗与巴基斯坦的关系产生了重大影响。巴基斯坦成为美国领导的反恐战争的前线国家,为美国打击塔利班的军事行动提供了至关重要的支持。然而,尽管有这种支持,巴基斯坦与阿富汗的关系依旧紧张,因为巴基斯坦曾被认为是对塔利班和其他极端组织提供了援助。在美国撤军后的时期,有几个因素可能会影响阿富汗与巴基斯坦的关系。阿富汗的安全局势至关重要,人们担心塔利班重新掌权可能会再次使阿富汗成为基地组织和伊斯兰国等恐怖组织的避风港。这是巴基斯坦的一个重大安全关切,因为巴基斯坦以前曾是这些恐怖组织发动袭击的目标。杜兰德线的问题是另一个可能影响阿富汗与巴基斯坦的关系的因素。阿富汗从未承认杜兰德线是国际边界,这导致了两国之间的持续紧张关系。随着塔利班掌权,人们担心他们可能会再次提出这个问题,导致局势的紧张。此外,国际社会对阿富汗的人道主义局势十分关注,特别是对该国妇女和少数民族的待遇。这是巴基斯坦的一个重大民族关切,那里有大量的普什图人,与阿富汗的普什图人有着共同的种族和文化联系。美国撤军后,阿富汗与巴基斯坦关系的未来仍充满不确定性,由于塔利班重新掌权,两国之间的紧张关系可能会加剧。然而,两国也有机会在解决恐怖主义和极端主义等共同问题上进行合作。一个潜在的合作领域可能是边界管理,这一直是阿富汗与巴基斯坦都关注的一个问题。巴基斯坦和阿富汗之间漏洞百出的边境已经被恐怖分子和走私者利用。在塔利班的控制下,两国可能有机会共同努力,加强边境管理,打击恐怖分子和走私者的越境行动。

关键词：巴阿关系美国撤军美国撤军后反恐战争边境管理

Influences of double diffusion upon radiative flow of thin film Maxwell fluid through a stretching channel

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Chinese Physics B 2023年第8期32卷 327-335页

作者： arshad khan Ishtiaq Ali Musawa Yahya Almusawa Taza Gul Wajdi Alghamdi College of Aeronautical Engineering National University of Sciences and Technology(NUST)Sector H-12Islamabad 44000Pakistan Department of Mathematics and Statistics College of ScienceKing Faisal UniversityAl-Ahsa 31982Saudi Arabia Department of Mathematics Faculty of ScienceJazan UniversityJazanSaudi Arabia Department of Mathematics City University of Science and Information TechnologyPeshawar 25000Pakistan Department of Information Technology Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah 80261Saudi Arabia

This work explores the influence of double diffusion over thermally radiative flow of thin film hybrid nanofluid and irreversibility generation through a stretching *** nanoparticles of silver and alumina have mixed in the Maxwell fluid(base fluid).Magnetic field influence has been employed to channel in normal *** that are going to administer the fluid flow have been converted to dimension-free notations by using appropriate *** analysis method is used for the solution of the resultant *** this investigation it has pointed out that motion of fluid has declined with growth in magnetic effects,thin film thickness,and unsteadiness *** of fluid has grown up with upsurge in Brownian motion,radiation factor,and thermophoresis effects,while it has declined with greater values of thermal Maxwell factor and thickness factor of the thin *** distribution has grown up with higher values of thermophoresis effects and has declined for augmentation in Brownian motion.

关键词： Maxwell fluid flow magnetohydrodynamic(MHD) hybrid nano fluid flow stretching channel double diffusion entropy generation HAM technique

A New Idea of Fractal-Fractional Derivative with Power Law Kernel for Free Convection Heat Transfer in a Channel Flow between Two Static Upright Parallel Plates

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Computers, Materials & Continua 2020年第11期65卷 1237-1251页

作者： Dolat khan Gohar Ali arshad khan Ilyas khan Yu-Ming Chu Kottakkaran Sooppy Nisar Department of Mathematics City University of Science and Information TechnologyPeshawar25000Pakistan Institute of Computer Sciences and Information Technology The University of AgriculturePeshawarPakistan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh72915Vietnam Department of Mathematics Huzhou UniversityHuzhou313000China Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering Changsha University of Science&TechnologyChangsha410114China Department of Mathematics College of Arts and SciencesPrince Sattam bin Abdulaziz UniversityWadi Aldawaser11991Saudi Arabia

Nowadays some new ideas of fractional derivatives have been used successfully in the present research community to study different types of mathematical *** them,the significant models of fluids and heat or mass transfer are on *** recently a new idea of fractal-fractional derivative is introduced;however,it is not used for heat transfer in channel *** this article,we have studied this new idea of fractal fractional operators with power-law kernel for heat transfer in a fluid flow *** exactly,we have considered the free convection heat transfer for a Newtonian *** flow is bounded between two parallel static *** of the plates is heated *** proposed problem is modeled with a fractal fractional derivative operator with a power-law kernel and solved via the Laplace transform method to find out the exact *** results are graphically analyzed via MathCad-15 software to study the behavior of fractal parameters and fractional *** the influence of temperature and velocity profile,it is observed that the fractional parameter raised the velocity and temperature as compared to the fractal ***,a combined approach of fractal fractional explains the memory of the function better than fractional only.

关键词： Fractal-fractional derivative power law kernel convection heat transfer upright parallel plates

Evaluation of soil loss severity and ecological restoration approach for sustainable agriculture in the Hindu Kush, Karakoram and Himalaya region

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Journal of Mountain Science 2024年第5期21卷 1509-1521页

作者： arshad ASHRAF Imran AHMAD Climate Energy and Water Research InstituteNational Agricultural Research Centre(NARC)Islamabad 44000Pakistan

Soil erosion has resulted in removal of the topsoils containing fine soil particles and plant nutrients, causing decrease in soil fertility in the Hindu Kush, Karakoram and Himalaya(HKH) region. The existing production of cereal crop grains has been reduced to one third of the potential crop grains production owing to land degradation and poor farming practices. It is necessary to assess risk of soil loss and identify appropriate controlling measures to address issues of low agriculture productivity and water insecurity in the region. In the present study, severity of soil loss was predicted using Revised Universal Loss Equation(RUSLE) and ecological measures were identified for sustainable mountain agriculture in the HKH region of Upper Indus Basin, Pakistan. Overall 62.6% area was found to have very low risk of soil loss, i.e., 100 t/(ha·yr) in about 6.8% and 7.4% areas respectively. The mean rate of soil loss was about 41.9 t/(ha·yr) in the Hindu Kush, 31.1 t/(ha·yr) in the Himalayas, 18.8 t/(ha·yr) in the Karakoram and overall 29.7 t/(ha·yr) in the three HKH ranges. As such no considerable measures have been adopted by the communities for restoration of the degraded areas except raising fruit/farm trees and supporting limited social forestry for their livelihoods. The slopes cleared for cultivation and susceptible to erosion may be stabilized through sowing/planting of multi-purpose plant species and formation of proper bench terraces. The conservation of forest ecosystem and pastures at higher elevations would help in reducing overland water flow, risk of flash flood hazard and minimizing sediment loads in the downstream. It is essential to adopt site-specific resource conservation techniques and restore possible ecosystem health for sustainable agriculture and economic developm

关键词： Climate change Erodibility Indus basin Land degradation Slope stabilization

ROBO-SPOT:Detecting Robocalls by Understanding User Engagement and Connectivity Graph

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Big Data Mining and Analytics 2024年第2期7卷 340-356页

作者： Muhammad Ajmal Azad Junaid arshad Farhan Riaz College of Comnputer Science Birmingham City UniversityBirminghamB55JUUK School of Computer Science University of LincolnLincolnLN67TSUK

Robo or unsolicited calls have become a persistent issue in telecommunication networks,posing significant challenges to individuals,businesses,and regulatory *** calls not only trick users into disclosing their private and financial information,but also affect their productivity through unwanted phone ringing.A proactive approach to identify and block such unsolicited calls is essential to protect users and service providers from potential ***,this paper proposes a solution to identify robo-callers in the telephony network utilising a set of novel features to evaluate the trustworthiness of callers in a *** trust score of the callers is then used along with machine learning models to classify them as legitimate or *** use a large anonymized dataset(call detailed records)from a large telecommunication provider containing more than 1 billion records collected over 10 *** have conducted extensive evaluation demonstrating that the proposed approach achieves high accuracy and detection rate whilst minimizing the error ***,the proposed features when used collectively achieve a true-positive rate of around 97%with a false-positive rate of less than 0.01%.

关键词： social network analysis reputation unwanted calls robo-callers telephone network Spam Over Internet Technology(SPIT)

Aberrant adult neurogenesis in intractable epilepsy:can GABAergic progenitor transplantation normalize this process?

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Neural Regeneration Research 2024年第7期19卷 1419-1420页

作者： Muhammad N.arshad Janice R.Naegele Department of Biology Wesleyan UniversityMiddletownCTUSA Department of Neuroscience Tufts University School of MedicineBostonMAUSA

Temporal lobe epilepsy(TLE) is a common type of focal epilepsy characterized by seizure foci within the temporal *** surgical resection of the foci is an established and effective approach for controlling seizures,both temporal lobes cannot be removed,due to their prominent roles in learning and ***,seizures induce changes to the temporal lobes that contribute to hyperexcitability,including mossy fiber sprouting,astrogliosis.

关键词： epilepsy progenitor seizures