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International Journal of Agricultural and Biological Engineering 2019年第4期12卷 162-168页

作者： tariq khan Hizbullah khan Department of Environmental Sciences University of Haripur22640Pakistan Department of Environmental Sciences University of Peshawar25000Pakistan

Assessing water pollution at basin level is a challenging *** this study,the environmental sustainability of grey water footprints(WFgrey)of Peshawar Basin in Pakistan was *** release of nitrogen(N)and phosphorus(P)from point and non-point sources during the period 1986 to 2015 were *** pollution level(WPL)for normal and 10%-50%future reduced runoff in Kabul River as a result of construction of dams was *** described in Water Footprint Assessment Manual and Grey Water Footprint Accounting Guidelines were *** showed that 30-year annual average of N and P discharges were 24.5×10^(3)t/a and 10.9×10^(4)t/a *** discharge of N and P from non-point sources contribute 97%and 99%respectively.N related WFgrey was 50×10^(8)m^(3)/a and 50×10^(9)m^(3)/a for *** of N was within the sustainable limit for all reduced runoff scenarios while P-related WPL for normal runoff exceeded sustainable limits and was worse in each reduced runoff *** study confirms the deteriorated water quality of Kabul River and the findings may be helpful for future planning and water resource management of the basin.

关键词： sustainability grey water footprint nitrogen phosphorus water pollution Kabul River Pakistan

Performance of hot-mix asphalt using polymer-modified bitumen and marble dust as a filler

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Journal of Traffic and Transportation Engineering(English Edition) 2023年第3期10卷 385-398页

作者： Diyar khan Rawid khan Muhammad tariq khan Muhammad Alam Tanveer Hassan Department of Civil Engineering University of Engineering and TechnologyPeshawarPakistan Faculty of Transport and Aviation Engineering Silesian University of TechnologyKatowice 40-019Poland Department of Civil Engineering University of Engineering and TechnologyMardanPakistan Department of Built Environment and Architecture London South Bank UniversityLondon SE10AAUK

Marble dust waste powder generated by the marble cutting industry has a high *** this research,the use of marble dust(MD)as a mineral filler substitute in hot mixed asphalt(HMA)was *** Marshall mix design was used to determine the optimum bitumen content(OBC)for all of the *** each of the four MD contents,i.e.,0,2%,4%,and 6%by weight of the total aggregates,four different bitumen percentages were *** results of the Marshall stability test showed that the optimum filler content was 4%*** were prepared with 0 MD in the control mix and varying percentages of MD as an alternate *** addition,MD aided in increasing the Marshall stability,rutting resistance,and permanent deformation and reduced the fatigue life of asphalt *** the percentage of MD increases,the rutting resistance and stiffness at high temperatures both *** the percentage of MD increases,the fatigue life *** resistance in high-temperature conditions can be improved by using MD in HMA as a partial substitute for stone dust(SD).In areas where extensive MD waste is present,MD can be incorporated into HMA mixtures instead of conventional fillers.

关键词： Asphalt mixture Marble dust Wheel tracker test Dynamic modulus test Four-point fatigue beam test

Electronic and thermoelectric properties of YbMg_(2)X_(2)(X=P,As,Sb,Bi)zintl compounds by first-principles method

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Journal of Rare Earths 2024年第1期42卷 147-154,I0006页

作者： Sajid khan Dil Faraz khan R.Neffati tariq Usman Muhammad Waqar Ahsraf Shamim khan Saeed Ullah Jan G.Murtaza Department of Physics University of Science&Technology BannuBannu28100Pakistan Department of Physics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Laboratoire de Physique de La Matiere Condensee Departement de PhysiqueFaculte des Sciences de TunisUniversite Tunis El ManarCampus Universitaire1060TunisTunisia Department of Physics Shaoxing UniversityShaoxing312000China Department of Mathematics&Natural Sciences Prince Mohammad Bin Fahd UniversityAlkhobar31952Saudi Arabia Materials Modeling Lab Department of PhysicsIslamia College Peshawar25120KhyberPakhtunkhwaPakistan

In this work the structural,electronic and thermoelectric properties of YbMg_(2)X_(2)(X=P,As,Sb,Bi)zintl compounds were investigated comprehensively using first principles *** electronic properties were studied using PBE GGA,TB-mBJ and hybrid(YS-PBE0)*** the structural parameters of optimized structures are in harmonious agreement to the available *** band structure study illustrates that the titled materials manifest metallic and semi metallic nature using PBE and TB-mBJ potentials while they show wide band gap semiconducting behavior by following hybrid(YS-PBE0)*** density of states(TDOS)and partial density of states(PDOS)were also calculated to glimpse the contribution of orbitals of atoms in the formation of *** properties were studied by using BoltzTraP2 code employed to *** get enormous values of Seebeck coefficient(S),power factor(PF)and thermoelectric figure of merit(ZT)for all the samples YbMg_(2)X_(2)(X=P,As,Sb,Bi),Moreover,the overwhelming transport properties for the titled compounds indicate the optimum level of carriers’concentration which pinpoints these materials to be better thermoelectrics in the 1-2-2 zintl family.

关键词： Zintl compounds Hybrid functional Band structure Thermoelectrics Rare earths

Local vibrations and lift performance of low Reynolds number airfoil

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Propulsion and Power Research 2017年第2期6卷 79-90页

作者： tariq Amin khan Wei Li Jiazhong Zhang Tom I-P.Shih Department of Energy Engineering.Zhejiang University HangzhouZhejiang 310027China School of Energy and Power Engineering Xi’an Jiaotong UniversityXi’anShaanxi 710049China School of Aeronautics and Astronautics Purdue UniversityWest LafayetteIN 47907USA Co-innovation Center for Advanced Aero-Engine College of Energy EngineeringZhejiang UniversityHangzhouZhejia 310027 China

The 2D incompressible Navier-Stokes equations arc solved based on the finite Flexible structure;Airfoil;Lock-in phenomenon;Lift coefficient;volume method and dynamic mesh technique is used to carry out partial fluid structure *** local flexible structure(hereinafter termed as flexible structure)vibrates in a single mode located on the upper surface of the *** Influence of vibration frequency and amplitude are examined and the corresponding fluid flow characteristics are investigated Computational fluid dynamics(CFD)which add complexity to the inherent problem in unsteady *** study is conducted for flow over NACA0012 airfoil at 600≤Re≤3000 at a low angle of *** of flexible structure induces a secondary vortex which modifies the pressure distribution and lift performance of the *** some moderate vibration amplitude,frequency synchronization frequency of rigid *** and shedding of vortices corresponding to the deformation of flexible structure depends on the Reynolds *** the case of Re≤1000,the deformation of flexible structure is considered in-phase with the vortex shedding i.e.,increasing maximum lift is linked with the positive deformation of flexible *** Re=1500 a phase shift of about 1/π exists while they are out-of-phase at Re>***,the oscillation amplitude of lift coefficient increases with increasing vibration amplitude for Re£1500 while it decreases with increasing vibration amplitude for Re>*** a result of frequency lock-in,the average lift coefficient is increased with increasing vibration amplitude for all investigated Reynolds numbers(Re).The maximum increase in the average liftcoefficient is 19.72% within the range of investigated parameters.

关键词： Flexible structure Airfoil Lock-in phenomenon Lift coefficient Computational fluid dynamics(CFD)

Physico-chemical properties and macrofauna of soils under various farming systems of cold arid region in Balochistan,Pakistan

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Journal of Mountain Science 2024年第8期21卷 2618-2630页

作者： khan Mehmood GUL Shamim KAKAR Hidayatullah PANEZAI Sanaullah khan Nayab ZIAD tariq NASEEM Mahrukh SHAHEEN Umbreen Department of Botany University of BalochistanQuetta 87300Pakistan Department of Natural Resource Sciences McGill University21111 Lakeshore Road Ste.Anne de BellevueQuébec H9X 3V9Canada Directorate of Agriculture Research Soil and Water TestingAgricultural Research InstituteQuetta 87300Pakistan Department of Geography and Regional Planning University of BalochistanQuetta 87300Pakistan Department of Zoology University of BalochistanQuetta 87300Pakistan

Barshore is a small village in the Pishin District,Balochistan,Pakistan,with dry summers and cold rainy *** is an agrarian region,mostly with orchards of various fruit *** study investigated the physico-chemical properties and macrofauna of soils under various agricultural management practices of this *** concentrations of soil organic matter(SOM),soil organic carbon(SOC),nutrients,pH,electrical conductivity,soil texture,and the abundance and number of species of soil macrofauna of the agricultural fields were *** agricultural fields were *** fields were orchards of apple,apricot or the mixture of apple and apricot trees and one field was a cropland,cultivated with wheat as a *** orchards were under conservation agricultural practices;whereas,the cropland was under conventional *** agricultural lands were 2-26 years *** concentration of soil organic matter(SOM)in the upper 0-10 cm depth of these field sites ranged from 11.6 g kg^(-1)to 32.8 g kg^(-1)*** compared to cropland,orchards had significantly higher concentration of SOM and SOC.A total of 18 soil macrofauna species were found and the most common and abundant were ants(Monomorium minimum,Camponotus pennsylvanicus,Solenopsis invicta,and Lasius niger)followed by Arion ssp.(Brown Slug)and earthworm Lumbricus *** analysis revealed non-significant relationship of the age and the concentration of SOM with the number of macrofauna species and with the concentrations of total mineral nitrogen,bioavailable phosphorus and *** existence of ants had no relationship with the concentration of SOM;whereas,existence of Lumbricus terrestris tended to had a positive relationship with the concentration of *** field of tree-based intercropping system was 2 years of age since the land was converted from rangeland to a cropland,had two ant species *** indicates the positive influence of crop diversification on soil

关键词： Soil organic matter Macrofauna Land use history Tree-based intercropping Conservation agriculture

助视器对年龄相关性黄斑变性患者视功能恢复和阅读速度的影响

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国际眼科杂志 2021年第1期21卷 9-14页

作者： Mufarriq Shah Muhammad tariq khan Hayatabad医疗中心巴基斯坦社区眼科研究所视光科巴基斯坦白沙瓦25000 Hayatabad医疗中心眼科巴基斯坦白沙瓦25000

目的:评估助视器对年龄相关性黄斑变性(AMD)患者视功能恢复和阅读速度的影响。方法:对低视力门诊44名AMD患者进行评估。收集并分析使用助视器前和使用助视器时裸眼视力、最佳矫正视力、屈光状态、助视器类型(LVAs)以及阅读速度的相关数... 详细信息

目的:评估助视器对年龄相关性黄斑变性(AMD)患者视功能恢复和阅读速度的影响。方法:对低视力门诊44名AMD患者进行评估。收集并分析使用助视器前和使用助视器时裸眼视力、最佳矫正视力、屈光状态、助视器类型(LVAs)以及阅读速度的相关数据。结果:共44例AMD患者,平均年龄为73±10.8岁,男性36例(82%)。其中,29例(67%)受试者视力较好的眼远视力(DVA)为1.0~1.6 LogMAR,而36例(82%)受试者近视力(NVA)小于3.2 m。使用助视器时平均DVA提高0.67±0.27 LogMAR(P=0.000)。使用LVAs时,42例患者NVA达到1 m甚至更佳,仅有2例(4.5%)没有使用LVAs的患者NVA为1 m。在使用一定时间的助视器后,有阅读能力的患者平均阅读速度从每分钟2.9±4.78字提高到每分钟71.31±29.96字(P<0.001)。15名受试者远距离视觉使用单目望远镜,而戴高倍单目镜片眼镜作为最常用的阅读辅助工具。结论:LVAs对AMD患者的视功能恢复和阅读能力的提高有一定的作用。对于AMD患者而言,接受低视力护理服务是有必要的。

关键词：年龄相关性黄斑变性失明视功能恢复助视器

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基于广义动态相量的电力系统仿真

基于广义动态相量的电力系统仿真

作者： tariq khan Khalil 华北电力大学(北京)

学位级别：硕士

电力系统的计算机模拟是电力行业规划、设计和运行的重要组成部分。由于电力系统负荷的增加,稳定性已成为人们关注的问题,因此,电力系统暂态行为分析程序已成为系统设计和控制的一个组成部分,以最大限度地提高系统承受严重干扰影响的能... 详细信息

电力系统的计算机模拟是电力行业规划、设计和运行的重要组成部分。由于电力系统负荷的增加,稳定性已成为人们关注的问题,因此,电力系统暂态行为分析程序已成为系统设计和控制的一个组成部分,以最大限度地提高系统承受严重干扰影响的能力。本研究旨在采用一种新的基于动态相量和传统电力系统仿真方法的通用电力系统仿真技术。本文提出的方法将时域电路转换为等效的动态相量表示。然后使用节点分析和数值积分替换对这些动态相量等价物进行模拟。首先给出简单的线性电路模型,以证明新方法能够精确地模拟小型系统。在这项工作中开发的方法将扩展到包括控制系统、电力电子转换器和同步电机。通过与使用时域电磁暂态模拟器获得的仿真结果进行可视化比较,将证明基于动态相量的新技术能够准确地模拟电力系统部件。

关键词：动态相量法通用参数电力系统分布式发电 SVC

在国际社会创业中探索或利用机会的创业行为之间的权衡

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在国际社会创业中探索或利用机会的创业行为之间的权衡

作者： tariq Habib khan 中国科学技术大学

学位级别：硕士

有关创业与国际社会创业机会探索或利用之间关系的研究大多忽略了文化对创业行为的影响。近年来,跨国创业中的企业和个人从东道国的民族文化角度对创业行为给予了极大的关注。越来越多的文献研究了支持企业家和创业公司在国外建立和发... 详细信息

有关创业与国际社会创业机会探索或利用之间关系的研究大多忽略了文化对创业行为的影响。近年来,跨国创业中的企业和个人从东道国的民族文化角度对创业行为给予了极大的关注。越来越多的文献研究了支持企业家和创业公司在国外建立和发展新企业时对有效和因果行为的相对依赖性的因素。本研究以250家主要来自欧洲、美国、加拿大和亚洲等世界各大洲各个国家的跨国企业为样本进行一系列假设检验,探讨了在文化描述规范的影响下,国际社会创业机会探索与利用的效果与因果之间的权衡。本研究将透过创业行为并探讨这些行为在探索或利用机会上的权衡,来填补机会策略的空白。我们的研究结果有助于企业家根据特定的文化描述规范,选择一种创业行为效果或因果关系,作为探索或利用国际创业机会的更有利策略。

关键词：有效性因果性绩效本位文化社会支持文化

Image Fusion Using Wavelet Transformation and XGboost Algorithm

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Computers, Materials & Continua 2024年第4期79卷 801-817页

作者： Shahid Naseem tariq Mahmood Amjad Rehman khan Umer Farooq Samra Nawazish Faten S.Alamri Tanzila Saba Department of Information Sciences Division of S&TUniversity of EducationLahore54770Pakistan Artificial Intelligence and Data Analytics(AIDA)Lab CCIS Prince Sultan UniversityRiyadh11586Saudi Arabia Faculty of Information Sciences University of EducationVehari CampusVehari61100Pakistan Department of Computer Science University of Engineering and TechnologyTaxila47050Pakistan Department of Mathematical Sciences College of SciencePrincess Nourah Bint Abdulrahman UniversityRiyadh84428Saudi Arabia

Recently,there have been several uses for digital image *** fusion has become a prominent application in the domain of imaging *** create one final image that provesmore informative and helpful compared to the original input images,image fusion merges two or more initial images of the same *** fusion aims to produce,enhance,and transform significant elements of the source images into combined images for the sake of human visual *** fusion is commonly employed for feature extraction in smart robots,clinical imaging,audiovisual camera integration,manufacturing process monitoring,electronic circuit design,advanced device diagnostics,and intelligent assembly line robots,with image quality varying depending on *** research paper presents various methods for merging images in spatial and frequency domains,including a blend of stable and curvelet transformations,everageMax-Min,weighted principal component analysis(PCA),HIS(Hue,Intensity,Saturation),wavelet transform,discrete cosine transform(DCT),dual-tree Complex Wavelet Transform(CWT),and multiple wavelet *** fusion methods integrate data from several source images of an identical target,thereby enhancing information in an extremely efficient *** precisely,in imaging techniques,the depth of field constraint precludes images from focusing on every object,leading to the exclusion of certain *** tackle thess challanges,a very efficient multi-focus wavelet decomposition and recompositionmethod is *** use of these wavelet decomposition and recomposition techniques enables this method to make use of existing optimized wavelet code and filter *** simulated outcomes provide evidence that the suggested approach initially extracts particular characteristics from images in order to accurately reflect the level of clarity portrayed in the original *** study enhances the performance of the eXtreme Gradient Boosting(XGBoos

关键词： Image fusion max-min average CWT XGBoost DCT inclusive innovations spatial and frequency domain

Outsmarting Android Malware with Cutting-Edge Feature Engineering and Machine Learning Techniques

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Computers, Materials & Continua 2024年第4期79卷 651-673页

作者： Ahsan Wajahat Jingsha He Nafei Zhu tariq Mahmood Tanzila Saba Amjad Rehman khan Faten S.A.lamri Faculty of Information Technology Beijing University of TechnologyBeijing100124China Artificial Intelligence and Data Analytics(AIDA)Lab CCIS Prince Sultan UniversityRiyadh11586Saudi Arabia Faculty of Information Sciences University of EducationVehari CampusVehari61100Pakistan Department of Mathematical Sciences College of SciencePrincess Nourah bint Abdulrahman UniversityRiyadh84428Saudi Arabia

The growing usage of Android smartphones has led to a significant rise in incidents of Android malware andprivacy *** escalating security concern necessitates the development of advanced technologies capableof automatically detecting andmitigatingmalicious activities in Android applications(apps).Such technologies arecrucial for safeguarding user data and maintaining the integrity of mobile devices in an increasingly digital *** methods employed to detect sensitive data leaks in Android apps are hampered by two major limitationsthey require substantial computational resources and are prone to a high frequency of false *** meansthat while attempting to identify security breaches,these methods often consume considerable processing powerand mistakenly flag benign activities as malicious,leading to inefficiencies and reduced reliability in *** proposed approach includes a data preprocessing step that removes duplicate samples,managesunbalanced datasets,corrects inconsistencies,and imputes missing values to ensure data *** Minimaxmethod is then used to normalize numerical data,followed by feature vector extraction using the Gain ratio andChi-squared test to identify and extract the most significant characteristics using an appropriate prediction *** study focuses on extracting a subset of attributes best suited for the task and recommending a predictivemodel based on domain expert *** proposed method is evaluated using Drebin and TUANDROMDdatasets containing 15,036 and 4,464 benign and malicious samples,*** empirical result shows thatthe RandomForest(RF)and Support VectorMachine(SVC)classifiers achieved impressive accuracy rates of 98.9%and 98.8%,respectively,in detecting unknown Androidmalware.A sensitivity analysis experiment was also carriedout on all three ML-based classifiers based on MAE,MSE,R2,and sensitivity parameters,resulting in a flawlessperformance for both *** app

关键词： Android malware detection machine learning SVC K-Nearest Neighbors(KNN) RF