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Automatic Heart Disease Detection by Classification of Ventricular Arrhythmias on ECG Using Machine Learning

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Computers, Materials & Continua 2022年第4期71卷 17-33页

作者： Khalid Mahmood aamir Muhammad Ramzan Saima Skinadar Hikmat Ullah khan Usman Tariq Hyunsoo Lee Yunyoung Nam Muhammad Attique khan Department of Computer Science and Information Technology University of SargodhaSargodha40100Pakistan School of Systems and Technology University of Management and TechnologyLahore54782Pakistan COMSAT University Islamabad Wah CampusWah CanttPakistan College of Computer Engineering and Sciences Prince Sattam Bin Abdulaziz UniversityAl-KhrajSaudi Arabia Department of ICT Convergence Soonchunhyang UniversityAsan31538Korea Department of Computer Science HITEC University TaxilaPakistan

This paper focuses on detecting diseased signals and arrhythmias classification into two classes:ventricular tachycardia and premature ventricular *** sole purpose of the signal detection is used to determine if a signal has been collected from a healthy or sick *** proposed research approach presents a mathematical model for the signal detector based on calculating the instantaneous frequency(IF).Once a signal taken from a patient is detected,then the classifier takes that signal as input and classifies the target disease by predicting the class *** applying the classifier,templates are designed separately for ventricular tachycardia and premature ventricular *** of a given signal with both the templates are computed in the spectral *** empirical analysis reveals precisions for the detector and the applied classifier are 100%and 77.27%,***,instantaneous frequency analysis provides a benchmark that IF of a normal signal ranges from 0.8 to 1.1 Hz whereas IF range for ventricular tachycardia and premature ventricular contraction is 0.08–0.6 *** indicates a serious loss of high-frequency contents in the spectrum,implying that the heart’s overall activity is slowed *** study may help medical practitioners in detecting the heart disease type based on signal analysis.

关键词： Heart disease signals preprocessing detection machine learning

Classification of Retroviruses Based on Genomic Data Using RVGC

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Computers, Materials & Continua 2021年第12期69卷 3829-3844页

作者： Khalid Mahmood aamir Muhammad Bilal Muhammad Ramzan Muhammad Attique khan Yunyoung Nam Seifedine Kadry Department of CS&IT University of SargodhaSargodha40100Pakistan Department of CS&IT University of MianwaliMianwali42200Pakistan School of Systems and Technology University of Management and TechnologyLahore54782Pakistan Department of Computer Science HITEC University TaxilaTaxilaPakistan Department of Computer Science and Engineering Soonchunhyang UniversityAsanKorea Faculty of Applied Computing and Technology Noroff University CollegeKristiansandNorway

Retroviruses are a large group of infectious agents with similar virion structures and replication ***,cancer,neurologic disorders,and other clinical conditions can all be fatal due to retrovirus *** of retroviruses by genome sequence is a biological problem that benefits from computational *** National Center for Biotechnology Information(NCBI)promotes science and health by making biomedical and genomic data available to the *** research aims to classify the different types of rotavirus genome sequences available at the ***,nucleotide pattern occurrences are counted in the given genome sequences at the preprocessing *** on some significant results,the number of features used for classification is reduced to *** classification shall be carried out in two *** first phase of classification shall select only two *** data in the first phase is transferred to the next phase,where the final decision is taken with the remaining three *** data sets of animals and human retroviruses are selected;the training data set is used to minimize the classifier’s number and training;the validation data set is used to validate the *** performance of the classifier is analyzed using the test data ***,we use decision tree,naive Bayes,knearest neighbors,and vector support machines to compare *** results show that the proposed approach performs better than the existing methods for the retrovirus’s imbalanced genome-sequence dataset.

关键词： Retroviruses machine learning bioinformatics classification

Risk-aware Distributed Optimal Power Flow in Coordinated Transmission and Distribution System

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Journal of Modern Power Systems and Clean Energy 2021年第3期9卷 502-515页

作者： aamir Nawaz Hongtao Wang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong UniversityJinan 250000China

Active distribution grids cause bi-directional power flow between transmission system(TS)and distribution system(DS),which not only affects the optimal cost but also the secure operation of the power *** paper proposes a hybrid coordination method to solve the risk-aware distributed optimal power flow(RA-DOPF)problem in coordinated TS and *** operation risk evaluation,the weather-based contingencies are considered in both TS and DS.A hybrid coordination method is developed that entails analytical target cascading(ATC)and Benders decomposition(BD).Moreover,the risk-aware optimal power flow(RAOPF)in TS and risk-based security-constrained optimal power flow in DS have been performed using the BD method considering basic optimal power flow as a master problem,whereas N-1 and N-2 contingencies are considered as *** case studies are performed using the IEEE 30-bus system with generation reserves as a TS and a 13-bus system as a *** results demonstrate the efficacy of the proposed method.

关键词： Analytical target cascading Benders decomposition distribution system preventive and corrective contingen-cies risk awareness transmission system

Distributed Stochastic Security Constrained Unit Commitment for Coordinated Operation of Transmission and Distribution System

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CSEE Journal of Power and Energy Systems 2021年第4期7卷 708-718页

作者： aamir Nawaz Hongtao Wang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong UniversityJinan 250000China

With the high penetration of renewable energies in modern power systems,deterministic coordination algorithms are facing two major problems:one is degradation in accuracy if fewer scenarios are utilized for uncertainty evaluation while second is the high computational time if a high number of scenarios are considered for better accuracy・In both cases,the efficiency of the algorithm is degraded・To solve these problems in coupled transmission system and distribution systems(TSDS),probabilistic coordination algorithms are adopted to solve with less *** this paper,a TSDS probabilistic coordination model is proposed to solve the coordinated security-constrained unit commitment problem.A mean and standard deviation matching based probabilistic analytical target cascading algorithm has been utilized for evaluation of TSDS coordination *** of solving each scenario as a separate problem,the proposed algorithm considers a single coordination problem with probabilistic characteristics as shared variables and hence,achieves fast convergence・Different case studies are performed to prove the efficacy of the proposed *** verify that the proposed algorithm reduces computational time and resources for large-scale systems.

关键词： Distribution system mean probabilistic analytical standard deviation target Cascading transmission system

Refined rigorous perturbation bounds for the SR decomposition

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Applied Mathematics:A Journal of Chinese Universities 2021年第4期36卷 537-553页

作者： Mahvish Samar aamir Farooq Department of Mathematics Shantou University College of Mathematics and Statistics Chongqing University

In this article, some new rigorous perturbation bounds for the SR decomposition under normwise or componentwise perturbations for a given matrix are derived. Also, the explicit expressions for the mixed and componentwise condition numbers are presented by utilizing the block matrix-vector equation approach. Hypothetical and trial results demonstrate that these new bounds are constantly more tightly than the comparing ones in the literature.

关键词： 65F35 15A23 15A57 SR decomposition Rigorous perturbation bound Lyapunov majorant function Banach fixed point theorem Mixed and componentwise condition numbers

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“石”刻准备着:方寸间感悟中国文化之美

神州学人 2024年第8期 46-47页

作者： [巴基斯坦]阿里赵阳平(指导) 不详

来中国留学之前,我在中国能源建设集团天津电力建设有限公司驻巴基斯坦海外公司做机械工程师。和中国同事一起工作的这些年,他们的专业、勤奋、团结等让我对他们的国家充满好奇,在家人的鼓励和朋友的推荐下,2021年,我以优异的成绩成功... 详细信息

来中国留学之前,我在中国能源建设集团天津电力建设有限公司驻巴基斯坦海外公司做机械工程师。和中国同事一起工作的这些年,他们的专业、勤奋、团结等让我对他们的国家充满好奇,在家人的鼓励和朋友的推荐下,2021年,我以优异的成绩成功申请到了中国政府奖学金,获得了赴中国地质大学(武汉)攻读机械工程专业硕士的机会。

关键词：机械工程师能源建设中国政府奖学金文化之美中国地质大学(武汉) 工程专业硕士巴基斯坦

Dynamic voltage regulation and power export in a distribution system using distributed generation

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第10期10卷 1523-1531页

作者： aamir HANIF Muhammad Ahmed CHOUDHRY Department of Electrical Engineering University of Engineering and Technology

The major aim of power quality(PQ) enhancing techniques is to maintain a specified voltage magnitude at a desired frequency for sensitive loads irrespective of faults on the power distribution *** dynamic voltage restorer(DVR) is a device used to mitigate voltage sags to regulate load *** paper presents a mathematical model for leading series voltage injection to mitigate sags thereby achieving the improvement of the utility power factor as well as power sharing between the DVR and *** power sharing will be as per requirement to compensate the sags considering the available distributed generation(DG).The approach of mitigating voltage sags using the concept of leading series voltage injection is suitable for those locations where phase shift in the voltage will not cause any *** MATLAB/SIMULINK SimPowerSystem toolbox has been used to obtain simulation results to verify the proposed mathematical model.

关键词： Power quality Distributed generation Voltage sags Series injection

Thermodynamic Characteristics of Dusty Plasma Studied by Using Molecular Dynamics Simulation

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Plasma Science and Technology 2012年第9期14卷 771-777页

作者： aamir SHAHZAD 何茂刚 Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education(MOE) Xi'an Jiaotong University Department of Physics Government College University Faisalabad(GCUF)Allama Iqbal RoadFaisalabad 38000Pakistan

Thermodynamic properties of a Debye-Yukawa system of particles are explored by using molecular dynamics simulation in the canonical ensemble. The excess free energy f of the Debye-Yukawa system is calculated by using two different approaches for the liquid phase, and the energy is obtained in a coupling parameter range of 0 ≤ F ≤100 and a wide range of the screening parameter κ. Simulation measurements for excess internal energy and pressure of the system over dimensionless parameters （κ, F） are also presented and compared with previous theoretical and simulated results. A F-expansion-fitting approach for the liquid phase is introduced with the expansion coefficients, which are functions of the screening parameter κ. The fitting coefficients are obtained by directly comparing them with the simulation measurements with a relative deviation of 1% or less. It is shown that the computational results provide a relatively simple method to calculate the excess internal energy and free energy in certain cases, which depend strongly on Г.

关键词： Debye-Yukawa system thermodynamic properties molecular dynamics free energy

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