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Association of post-traumatic stress disorder and work performance: A survey from an emergency medical service, Karachi, Pakistan

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World Journal of Emergency Medicine 2017年第3期8卷 214-222页

作者： Salima Kerai Omrana pasha Uzma Khan muhammad Islam Nargis Asad Junaid Razzak Epidemiology and Biostatistics Community Health Sciences Department Aga Khan University Community Health Sciences Department Aga Khan University Psychiatry Department Aga Khan University Emergency Medicine Department Johns Hopkins University School of Medicine

BACKGROUND: The purpose of the study was to explore the association between posttraumatic stress disorder(PTSD) and work performance of emergency medical services personnel in Karachi, ***: Emergency medical service personnel were screened for potential PTSD using Impact of Event Scale-Revised(IES-R). Work performance was assessed on the basis of fi ve variables: number of late arrivals to work, number of days absent, number of days sick, adherence to protocol, and patient satisfaction over a period of 3 months. In order to model outcomes like the number of late arrivals to work, days absent and days late, negative binomial regression was applied, whereas logistic regression was applied for adherence to protocol and linear for patient satisfaction ***: Mean scores of PTSD were 24.0±12.2. No association was found between PTSD and work performance measures: number of late arrivals to work(RRadj 0.99; 0.98–1.00), days absent(RRadj 0.98; 0.96–0.99), days sick(RRadj 0.99; 0.98–1.00), adherence to protocol(ORadj 1.01; 0.99–1.04) and patient satisfaction(β 0.001%–0.03%) after adjusting for years of formal schooling, living status, coping mechanism, social support, working hours, years of experience and anxiety or ***: No statistically significant association was found between PTSD and work performance amongst EMS personnel in Karachi, Pakistan.

关键词： Emergency medical service Karachi Pakistan Post-traumatic stress disorder Stress Work performance

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A Deep Learning Approach for Crowd Counting in Highly Congested Scene

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Computers, Materials & Continua 2022年第12期73卷 5825-5844页

作者： Akbar Khan Kushsairy Abdul Kadir Jawad Ali Shah waleed Albattah muhammad Saeed Haidawati Nasir Megat Norulazmi Megat Mohamed Noor muhammad Haris Kaka Khel Electrical Section Universiti Kuala Lumpur British Malaysian InstituteSelangor53100Malaysia Department of Electrical Engineering International Islamic UniversityIslamabad44000Pakistan Department of Information Technology College of ComputerQassim UniversityBuraydah51452Saudi Arabia Department of Electrical Engineering National University of Computer and Emerging SciencesIslamabad44000Pakistan Computer Engineering Technology Section Universiti Kuala Lumpur Malaysian Institute of Information TechnologyKuala Lumpur50250Malaysia

With the rapid progress of deep convolutional neural networks,several applications of crowd counting have been proposed and explored in the *** congested scene monitoring,a variety of crowd density estimating approaches has been *** understanding of highly congested scenes for crowd counting during Muslim gatherings of Hajj and Umrah is a challenging task,as a large number of individuals stand nearby and,it is hard for detection techniques to recognize them,as the crowd can vary from low density to high *** deal with such highly congested scenes,we have proposed the Congested Scene Crowd Counting Network(CSCC-Net)using VGG-16 as a core network with its first ten layers due to its strong and robust transfer learning rate.A hole dilated convolutional neural network is used at the back end to widen the relevant field to extract a large range of information from the image without losing its original *** dilated convolution neural network is mainly chosen to expand the kernel size without changing other ***,several loss functions have been applied to strengthen the evaluation accuracy of the ***,the entire experiments have been evaluated using prominent data sets namely,ShanghaiTech parts A,B,UCF_CC_50,and UCF_*** model has achieved remarkable results i.e.,68.0 and 9.0 MAE on ShanghaiTech parts A,B,199.1 MAE on UCF_CC_50,and 99.8 on UCF_QNRF data sets respectively.

关键词： Deep learning congested scene crowd counting fully convolutional neural network dilated convolution

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Sparse Crowd Flow Analysis of Tawaaf of Kaaba During the COVID-19 Pandemic

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Computers, Materials & Continua 2022年第6期71卷 5581-5601页

作者： Durr-e-Nayab Ali Mustafa Qamar Rehan Ullah Khan waleed Albattah Khalil Khan Shabana Habib muhammad Islam Department of Computer Systems Engineering University of Engineering and TechnologyPeshawarPakistan Department of Computer Science College of ComputerQassim UniversityBuraydahSaudi Arabia Department of Information Technology College of ComputerQassim UniversityBuraydahSaudi Arabia Department of Information Technology and Computer Science Pak-Austria FachhochschuleInstitute of Applied Sciences and TechnologyHaripurPakistan Department of Electrical Engineering College of Engineering and Information TechnologyOnaizah CollegesAl-QassimSaudi Arabia

The advent of the COVID-19 pandemic has adversely affected the entire world and has put forth high demand for techniques that remotely manage crowd-related *** surveillance and crowd management using video analysis techniques have significantly impacted today’s research,and numerous applications have been developed in this *** research proposed an anomaly detection technique applied to Umrah videos in Kaaba during the COVID-19 pandemic through sparse crowd *** theKaaba rituals is crucial since the crowd gathers from around the world and requires proper analysis during these days of the *** Umrah videos are analyzed,and a system is devised that can track and monitor the crowd flow in *** crowd in these videos is sparse due to the pandemic,and we have developed a technique to track the maximum crowd flow and detect any object(person)moving in the direction unlikely of the major *** have detected abnormal movement by creating the histograms for the vertical and horizontal flows and applying thresholds to identify the non-majority *** algorithm aims to analyze the crowd through video surveillance and timely detect any abnormal activity tomaintain a smooth crowd flowinKaaba during the pandemic.

关键词： Computer vision COVID sparse crowd crowd analysis flow analysis sparse crowd management tawaaf video analysis video processing

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Adaptive Fuzzy Logic Controller for Harmonics Mitigation Using Particle Swarm Optimization

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Computers, Materials & Continua 2022年第6期71卷 4275-4293页

作者： waleed Rafique Ayesha Khan Ahmad Almogren Jehangir Arshad Adnan Yousaf Mujtaba Hussain Jaffery Ateeq Ur Rehman muhammad Shafiq Department of Electrical&Computer Engineering COMSATS University Islamabad Lahore CampusLahore54000Pakistan Syed Babar Ali School of Science and Engineering Lahore University of Management SciencesLahore54000Pakistan Department of Computer Science College of Computer and Information SciencesKing Saud UniversityRiyadh11633Saudi Arabia Department of Electrical Engineering Superior UniversityLahore54000Pakistan Department of Electrical Engineering Government College UniversityLahore54000Pakistan Department of Information and Communication Engineering Yeungnam UniversityGyeongsan38541Korea

An excessive use of non-linear devices in industry results in current harmonics that degrades the power quality with an unfavorable effect on power system *** this research,a novel control techniquebased Hybrid-Active Power-Filter(HAPF)is implemented for reactive power compensation and harmonic current component for balanced load by improving the Power-Factor(PF)and Total–Hormonic Distortion(THD)and the performance of a *** work proposed a soft-computing technique based on Particle Swarm-Optimization(PSO)and Adaptive Fuzzy technique to avoid the phase delays caused by conventional control ***,the control algorithms are implemented for an instantaneous reactive and active current(Id-Iq)and power theory(Pq0)in *** prevent the degradation effect of disturbances on the system’s performance,PS0-PI is applied in the inner loop which generate a required dc ***,a comparative analysis of both techniques has been presented to evaluate and validate the performance under balanced load *** presented result concludes that the Adaptive Fuzzy PI controller performs better due to the non-linearity and robustness of the ***,the gains taken from a tuning of the PSO based PI controller optimized with Fuzzy Logic Controller(FLC)are optimal that will detect reactive power and harmonics much faster and *** proposed hybrid technique minimizes distortion by selecting appropriate switching pulses for VSI(Voltage Source Inverter),and thus the simulation has been taken in SIMULINK/*** proposed technique gives better tracking performance and robustness for reactive power compensation and harmonics *** a result of the comparison,it can be concluded that the PSO-basedAdaptive Fuzzy PI system produces accurate results with the lower THD and a power factor closer to unity than other techniques.

关键词： Harmonics compensation soft computing technique hybrid fuzzy PSO based PI controller HSAPF power quality

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Intelligent Dynamic Inversion Controller Design for Ball and Beam System

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Computers, Materials & Continua 2022年第8期72卷 2341-2355页

作者： Ibrahim M.Mehedi Abdulah Jeza Aljohani Md Mottahir Alam Mohamed Mahmoud Mohammed J.Abdulaal muhammad Bilal waleed Alasmary Department of Electrical and Computer Engineering(ECE) King Abdulaziz UniversityJeddah21589Saudi Arabia Center of Excellence in Intelligent Engineering Systems(CEIES) King Abdulaziz UniversityJeddah21589Saudi Arabia Electrical and Computer Engineering Electrical and Computer EngineeringTN38505United States Computer and Information Systems Umm Al-Qura UniversityMakkahSaudi Arabia

The Ball and beam system(BBS)is an attractive laboratory experimental tool because of its inherent nonlinear and open-loop unstable *** an effective ball and beam system controller is a real challenge for researchers and *** this paper,the control design technique is investigated by using Intelligent Dynamic Inversion(IDI)method for this nonlinear and unstable *** proposed control law is an enhanced version of conventional Dynamic Inversion control incorporating an intelligent control element in *** Moore-PenroseGeneralized Inverse(MPGI)is used to invert the prescribed constraint dynamics to realize the baseline control law.A sliding mode-based intelligent control element is further augmented with the baseline control to enhance the robustness against uncertainties,nonlinearities,and external *** semi-global asymptotic stability of IDI control is guaranteed in the sense of *** simulations and laboratory experiments are carried out on this ball and beam physical system to analyze the effectiveness of the *** addition to that,comparative analysis of RGDI control with classical Linear Quadratic Regulator and Fractional Order Controller are also presented on the experimental test bench.

关键词： Ball and beam system(BBS) unstable system internal model PD controllers IDI control robust control

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Experimental investigation of thermal performance characteristics of sintered copper wicked and grooved heat pipes:A comparative study

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Journal of Central South University 2021年第11期28卷 3507-3520页

作者： Saif Ullah KHALID Hafiz muhammad ALI muhammad Ali NASIR Riffat Asim pasha ZAFAR SAID L.Syam SUNDAR Ahmed Kadhim HUSSEIN Mechanical Engineering Department University of Engineering and TechnologyTaxila 47050Pakistan Mechanical Engineering Department King Fahd University of Petroleum&Minerals(KFUPM)Dhahran 31261Saudi Arabia Interdisciplinary Research Center for Renewable Energy and Power Systems(IRC-REPS) King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Sustainable and Renewable Energy Engineering Department College of EngineeringUniversity of SharjahSharjah 27272United Arab Emirates Centre for Mechanical Technology and Automation(TEMA-UA) Department of Mechanical EngineeringUniversity of AveiroAveiro 3810-131Portugal Mechanical Engineering Department College of EngineeringUniversity of BabylonBabylon CityHillaIraq

Heat pipes are most frequently used for thermal management *** of right type of heat pipe for a specific scenario is utmost necessary for best *** purpose of this research is comparison of thermal performance characteristics of sintered copper wicked and grooved heat pipes,which are mostly used types of heat *** water filled heat pipes were tested through experimentation in gravity assisted *** outcomes have been compiled in terms of capillary pressure,operating temperature,thermal resistance and heat transfer *** pressure is high in sintered heat pipes compared to grooved heat pipes irrespective of groove *** heat pipes have lower operating temperature compared to sintered heat pipes at the same heat *** 8 W,compared to sintered heat pipes,grooved heat pipes have 8.24% lower condenser surface temperature,4.41% lower evaporator surface temperature and 7.79% lower saturation *** resistance of sintered heat pipe is much lower than grooved heat *** maximum relative difference of 63.8% was observed at 8 *** transfer coefficient of sintered heat pipe was observed double compared to grooved heat pipe at 8 W heat *** resistance and hence heat transfer coefficient of sintered heat pipe change almost in a linear manner with respect to heat load but unexpectedly turning point is observed in thermal resistance and heat transfer coefficient of grooved heat *** heat pipes attain equilibrium much earlier compared to sintered *** heat loads from 4 to 20 W causes variation in equilibrium establishment time from 7 to 4 min for grooved and from 10 to 7 min for sintered heat pipes.

关键词： heat pipe thermal resistance heat transfer coefficient thermal performance capillary pressure

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基于压力传感智能手套的健身房运动监测

基于压力传感智能手套的健身房运动监测

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作者： muhammad waleed ASLAM 中国科学技术大学

学位级别：硕士

众所周知,体育锻炼和健身运动有利于身心健康。近年来,将先进的信息技术应用于体育活动已经成为一种趋势,例如利用可穿戴计算和传感器技术开发用于监测体育活动、评估训练结果并给出优化建议的系统。其中,用于监测跑步或骑行运动时心血... 详细信息

众所周知,体育锻炼和健身运动有利于身心健康。近年来,将先进的信息技术应用于体育活动已经成为一种趋势,例如利用可穿戴计算和传感器技术开发用于监测体育活动、评估训练结果并给出优化建议的系统。其中,用于监测跑步或骑行运动时心血管活动的系统数量,远大于用于监测健身房中力量训练的系统数量。值得注意的是,健身运动除了与跑步运动一样涉及心血管活动外,还涉及手、身体和健身设备之间的单一或多重互动。基于这些,进行文献调研并咨询健身教练后,本文提出了一种带有压力感应的智能手套的设计方案,该款手套在感应区域没有导线连接,当用户的手与健身设备或身体接触时,它就可以监测健身活动。在使用常规的健身设备时,压力感应智能手套可以监测和评估上半身的健身训练。智能手套的原型是基于针织机编织柔软有弹性的压力传感织物开发的。智能手套有93个感应点,在手腕上呈3×15矩阵式布局,在手掌上呈6×8矩阵式布局,这些地方没有连接电缆,不会对健身训练产生干扰。对压力传感智能手套进行了数据采集和性能分析实验。共有20名志愿者被选中进行10种不同的上半身锻炼,并通过教学手册和演示视频指导他们如何进行锻炼。参与者被要求填写一份关于他们戴手套经历的问卷。大约72.5%的参与者更喜欢戴手套进行锻炼,并对本实验中所使用的智能手套反馈良好。通过对获取的原始数据进行预处理,进而提取体育锻炼的特征和识别进行了何种体育锻炼。预处理阶段的目标是恢复异常通道的数据并对数据进行去噪。使用从手腕和手掌区域获取的数据来计算2934个特征,包括时间、频率和帧特征。通过对计算得出的特征去除重复的、准常数的和相关的部分,最终获取286个特征的子集,并使用这些特征子集基于网格搜索技术来调整四个机器学习模型的参数。基于手腕和手掌的数据,对结果进行分析以选择最优的模型,实验结果表明,在10折交叉验证下,支持向量机模型最高可以达到96%的分类准确率。在本研究中,设计了一套基于智能手套的算法,该算法通过运动过程中的重量信号来识别锻炼动作的重复次数。算法中包含三个独立的阶段:1)通过设置高度和距离阈值来选择真实峰值;2)施加动态时间规整(DTW)运算以标识用于计算重复次数的显式模式模板;3)再次施加动态时间规整来检验和计算某项运动的重复次数。在评估了从手腕区域、手掌区域以及手腕和手掌区域获得的训练的数据信号之后,计算出17.81(手腕区域和手掌区域在一起)的平均绝对误差。比率指数法是评价负重平衡程度的一种方法。通过计算得出正负Γ±=±0.6的标准,并以此标准确认健身运动时的负重不平衡现象。根据计算结果,共有15名参与者在18组不同的运动中的评定结果为存在负重不平衡现象。综上所述,本文提出了一套可用于健身运动识别、运动次数计数和负重不平衡性量化评估的压力感应智能手套系统。通过该智能手套上手掌和手腕区域的93个压力传感单元,可以收集测试者手掌手腕区域的压力分布数据。通过从20名志愿者获取的锻炼数据对该系统的性能进行了验证。使用支持向量机分类器实现了 96%的健身运动识别准确率。针对重复运动计数任务,计算出17.81的平均绝对误差。对于负重不平衡的监测通过比率指数法和一个计算出的阈值Γ±=±0.6进行量化。

关键词：健身房锻炼压力感应智能手套特征提取机器学习支持向量机不平衡量化

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Role of foliar spray of plant growth regulators in improving photosynthetic pigments and metabolites in Plantago ovata (Psyllium) under salt stress–A field appraisal

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BIOCELL 2023年第3期47卷 523-532页

作者： ABDUL SAMAD KANVAL SHAUKAT MAHMOOD-UR-REHMAN ANSARI MEREEN NIZAR NOREEN ZAHRA AMBREEN NAZ HAFIZ muhammad waleed IQBAL ALI RAZA VLADAN PESIC IVICA DJALOVIC Department of Botany University of BalochistanQuetta08770Pakistan Department of Bioinformatics and Biotechnology Government College UniversityFaisalabad38000Pakistan Department of Botany University of AgricultureFaisalabad38040Pakistan Department of Food Science and Technology Muhammad Nawaz Shareef University of AgricultureMultan66000Pakistan Department of Agronomy Muhammad Nawaz ShareefUniversity of AgricultureMultan66000Pakistan College of Agriculture Fujian Agriculture and Forestry UniversityFuzhou350002China Department of Genetics and Plant Breeding Faculty of AgricultureUniversity of BelgradeBelgrade11000Serbia Institute of Field and Vegetable Crops National Institute of the Republic of SerbiaMaxim Gorki 30Novi Sad21000Serbia

Salinity is one of the major abiotic factors that limit the growth and productivity of *** application of plant growth regulators(PGRs)may help plants ameliorate the negative impacts of ***,a field experiment was conducted at the Botanical Garden University of Balochistan,Quetta,to explore the potential role of PGRs,i.e.,moringa leaf extract(MLE;10%),proline(PRO;1μM),salicylic acid(SA;250μM),and thiourea(TU;10 mM)in ameliorating the impacts of salinity(120 mM)on Plantago ovata,an important medicinal *** hampered plant photosynthetic pigments and metabolites but elevated oxidative ***,foliar application of PGRs enhanced photosynthetic pigments,including Chl b(21.11%),carotenoids(57.87%)except Chl a,activated the defense mechanisms by restoring and enhancing the metabolites,i.e.,soluble sugars(49.68%),soluble phenolics(33.34%),and proline(31.47%),significantly under salinity ***,foliar supplementation of PGRs under salt stress led to a decrease of about 43.02%and 43.27%in hydrogen peroxide and malondialdehyde content,***,PGRs can be recommended for improved photosynthetic efficiency and metabolite content that can help to get better yield under salt stress,with the best and most effective treatments being those of PRO and MLE to predominately ameliorate the harsh impacts of salinity.

关键词： Abiotic stress Proline Photosynthetic pigments Thiourea Salinity Salicylic acid

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Paroxetine Augments while Naloxone Abolishes the Analgesic Effect of Paracetamol in Acute Nociceptive Pain in Mice

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Pharmacology & Pharmacy 2013年第4期4卷 398-405页

作者： Mohammad Raafat Abdalla waleed Al Malki muhammad Ahmed Department of Pharmacology and Toxicology Faculty of Pharmacy Umm Al-Qura University Makkah KSA

The mechanism(s) of analgesic action of paracetamol (acetaminophen;N-acetyl-p-aminophenol) remains controversial. Previous studies on rats suggested that the antinociceptive action of paracetamol might involve the central descending inhibitory pain pathways recruiting both a serotoninergic and an opioidergic system. This study explores this issue in mice using paroxetine, the most potent selective serotonin re-uptake inhibitor, and the nonselective opioid pure antagonist naloxone. Animals were divided into two main groups for two separate experiments, each subdivided into 3 subgroups. In both experiments;the first group served as control, the second group received paracetamol (200 mg/kg, i.p). In one experiment, the third group received paroxetine (20 mg/kg p.o for 7 days) before paracetamol. In the other experiment, animals of the third group were pretreated with naloxone (5 mg/kg, i.p) 30 min before paracetamol. The antinociceptive effect of paracetamol was tested using the hot plate test. Paracetamol displayed a significant antinociceptive activity that was augmented by pretreatment with paroxetine as was shown by maintenance of its effect beyond that shown by paracetamol alone. On the other hand, pretreatment with naloxone abolished paracetamol’s antinociceptive activity in the hot-plate test. These results extended the previous observation in rats that the antinociceptive effect of paracetamol involved activation of a central descending pain inhibitory pathway with serotonin and opioidergic peptides being potential mediators recruited.

关键词： Paracetamol Paroxetine Naloxone Mice

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Control of Linear Servo Carts with Integral-Based Disturbance Rejection

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Computers, Materials & Continua 2022年第10期73卷 453-463页

作者： Ibrahim M.Mehedi Abdulah Jeza Aljohani Ubaid M.Al-Saggaf Ahmed I.Iskanderani Thangam Palaniswamy Mohamed Mahmoud Mohammed J.Abdulaal muhammad Bilal waleed Alasmary Department of Electrical and Computer Engineering(ECE) King Abdulaziz University5521589Saudi Arabia Center of Excellence in Intelligent Engineering Systems(CEIES) King Abdulaziz University6521589Saudi Arabia Electrical and Computer Engineering TN38505United States Computer and Information Systems Umm Al-Qura UniversityMakkahSaudi Arabia

This paper describes a system designed for linear servo cart systems that employs an integral-based Linear Active Disturbance Rejection Control(ILADRC)scheme to detect and respond to *** upgrade in this control technique provides extensive immunity to uncertainties,attenuation,internal disturbances,and external sources of *** fundamental technology base of LADRC is Extended State Observer(ESO).LADRC,when combined with Integral action,becomes a hybrid control technique,namely *** tracking is based on Bode’s Ideal Transfer Function(BITF)in this proposed ILADRC *** proves to be a very robust and appropriate pole placement *** proposed LSC system has experimented with the hybrid ILADRC technique plotted the *** the results,it is evident that the proposed ILADRC scheme enhances the robustness of the LSC system with remarkable disturbance ***,the results of a linear quadratic regulator(LQR)and ILADRC schemes are comparatively *** analysis deduced the improved performance of ILADRC over the LQR control scheme.

关键词： Pole placement ADRC Active disturbance rejection robust control linear servo cart system

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