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2022 International Conference on Advancement in Electrical and Electronic Engineering (ICAEEE)最新文献

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Genetic Algorithm for Efficient Cluster Head Selection in LEACH protocol of Wireless Sensor Network 无线传感器网络LEACH协议簇头高效选择的遗传算法
Humaira Binte Harun, Md. Saiful Islam, Mohammad Hanif
Wireless Sensor Node (WSN) is made up of a large number of microsensor nodes that collect data and deliver it to base station based on some pre-defined instructions. In order to improve the system performance, LEACH protocol is usually employed to select the optimal Cluster head. In this study, genetic algorithm (GA) is utilized for optimal cluster head selection in the LEACH protocol. The suggested GA-based LEACH technique was compared to the performance of the conventional LEACH and I-LEACH protocols, which were previously implemented. According to the findings, the proposed GA-based LEACH protocol outperforms the traditional LEACH and I-LEACH methods in terms of throughput, lifetime and energy dissipation. The GA-based LEACH can send over 350% more data packets than the traditional LEACH technique. Furthermore, as compared to I-LEACH, the sensor nodes' lifetime in the GA-based LEACH network increases by around 150%, and by nearly 300% when compared to traditional LEACH.
无线传感器节点(Wireless Sensor Node, WSN)是由大量的微传感器节点组成,这些微传感器节点根据预先设定的指令采集数据并将数据传递给基站。为了提高系统性能,通常采用LEACH协议来选择最优簇头。在本研究中,遗传算法(GA)被用于LEACH协议的最优簇头选择。将建议的基于ga的LEACH技术与之前实现的传统LEACH和I-LEACH协议的性能进行了比较。结果表明,基于ga的LEACH协议在吞吐量、寿命和能量消耗方面优于传统的LEACH和I-LEACH方法。与传统的LEACH技术相比,基于ga的LEACH可以多发送350%以上的数据包。此外,与I-LEACH相比,基于ga的LEACH网络中的传感器节点寿命增加了约150%,与传统LEACH相比增加了近300%。
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引用次数: 3
Generating a Visual-Inertial Odometry Dataset based on a Helmet Prototype for Recognizing Human Activities 基于头盔原型的人类活动识别视觉惯性里程计数据集生成
K. Shahiduzzaman, Md Salah Uddin Yusuf
Human activity recognition (HAR) is an important area for elderly care. Because with an effective HAR clinical management authorities can monitor movement, abnormality, human behavior, chronicle diseases, and suddenly fall remotely. HAR may also reduce the workload of a caregiver. Our research mainly focuses on HAR for sudden fall detection and prediction. Usually, raw signals or features extracted from raw signals are used in HAR developmental works, which can increase false alarm rates (FAR). Besides, it is hard to differentiate various human activities through the illustration of this time-series signal. If these activities can be patterned in regular shape and can be expressed with a simple mathematical equation, then the recognition algorithm can not only detect daily activities but also predict them. Therefore, we will present a new and much effective technical way by using visual-inertial odometry (VIO) for human activity recognition in this paper. We consider walking, running and jumping activities to show our claims. From the results, we can see that considered human activities are easy to differentiate. 'Goodness of fit’ of these activities will show how we could model mathematically them.
人体活动识别(HAR)是老年人护理的一个重要领域。因为有了有效的HAR,临床管理当局可以远程监测运动、异常、人类行为、慢性疾病和突然跌倒。HAR也可以减少照顾者的工作量。我们的研究主要集中在HAR对突然跌落的检测和预测。通常在HAR开发工作中使用原始信号或从原始信号中提取的特征,这会增加误报率(FAR)。此外,很难通过这种时间序列信号来区分各种人类活动。如果这些活动可以有规则的形状,并且可以用简单的数学方程表示,那么识别算法不仅可以检测日常活动,还可以预测它们。因此,本文提出了一种新的、有效的人体活动识别技术——视觉惯性里程计(VIO)。我们考虑走、跑、跳等活动来表明我们的主张。从结果中,我们可以看到,考虑的人类活动很容易区分。这些活动的“拟合优度”将展示我们如何用数学模型来模拟它们。
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引用次数: 0
Network-based Approach to Identify Pathways and Macromolecule Interactions that Mediate Influences of COVID-19 on the Progression of Respiratory System Diseases 基于网络的方法鉴定介导COVID-19对呼吸系统疾病进展影响的途径和大分子相互作用
Nitun Kumar Podder, P. C. Shill, Humayan Kabir Rana, Subir Saha, A. Mimi, Nahnun Nahar Corniya, Nandita Paul, Tarun Kumar Saha
COVID-19 is an infectious illness concerning coronavirus that is transmitted through droplets propagated by an infected person exhales, coughs, or sneezes. People affected by coronavirus have a risk to occur respiratory diseases (RDs). The longevity of COVID-19 may appear a vital risk of manifesting RDs. To address these issues, we explored transcriptomic data to identify the genetic effects of COVID-19 on the development of RDs such as Bronchitis (BC), Asthma (AT), Lung cancer (LC), and Pulmonary Edema (PE). We explored GEO datasets from NCBI for COVID-19, BC, AT, LC, PE case, and control subjects. We identified COVID-19 is associated with RDs by sharing 16, 19, 27, and 59 commonly DEGs accordingly. By using these genes we performed some bioinformatics analysis and constructed diseasome networks, identified functional and ontological pathways. We formed PPIs networks and PDIs network. On the basis of PPIs and PDIs, we have identified hub proteins and constructed hub proteins network. We have successfully developed a quantitative model to identify the genetic effects of COVID-19 on the progression of RDs. We also validated our investigations through gold-benchmark datasets. Our results are an effective resource to mark out the most important influences on the development of RDs for COVID-19.
COVID-19是一种与冠状病毒有关的传染病,通过感染者呼气、咳嗽或打喷嚏传播的飞沫传播。受冠状病毒感染的人有患呼吸道疾病的风险。COVID-19的长期存在可能是出现rd的一个重要风险。为了解决这些问题,我们研究了转录组学数据,以确定COVID-19对rd(如支气管炎(BC)、哮喘(AT)、肺癌(LC)和肺水肿(PE)发展的遗传影响。我们研究了来自NCBI的COVID-19、BC、AT、LC、PE病例和对照组的GEO数据集。通过共享16、19、27和59个共同基因,我们确定了COVID-19与rd相关。通过使用这些基因,我们进行了一些生物信息学分析,构建了疾病网络,确定了功能和本体论途径。形成了PPIs网络和pdi网络。在PPIs和pdi的基础上,我们鉴定了枢纽蛋白并构建了枢纽蛋白网络。我们已经成功开发了一个定量模型,以确定COVID-19对rd进展的遗传影响。我们还通过黄金基准数据集验证了我们的调查结果。我们的研究结果是一个有效的资源,可以标记出对COVID-19 rd开发最重要的影响。
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引用次数: 2
Simulating the electrical characteristics of a highly efficient Cs2AgBiBr6-based perovskite solar cell with NiOx hole transport layer 模拟具有NiOx空穴传输层的高效cs2agbibr6钙钛矿太阳能电池的电学特性
Md. Raghib Iftekhar, Md. Golam Rabbani, Adnan Hosen, Md. Saiful Islam, Md. Suruz Mian, Sheikh Rashel Al Ahmed
Lead-free double perovskites show much potential as optoelectronic materials because they are stable and non-toxic. We have conducted a numerical simulation to investigate non-toxic and inorganic Cs2AgBiBr6 absorber based-photovoltaic (PV) device with NiOx hole transport layer (HTL). Herein, the Solar Cell Capacitance Simulator in One Dimensional (SCAPS-1D) has been used to design the cell structure of Ni/NiOx/Cs2AgBiBr6/TiO2/FTO/Al. The optimum thickness of the Cs2AgBiBr6 perovskite layer is found to be 600 nm. Varuous physical parameters of the designed cell on the PV outputs have been explored. To understand the stability of the proposed perovskite solar cell (PSC), effect of functioning temperature on the PV efficiency is also analyzed. Maximum power conversion efficiency (PCE) of 25.38% is achieved with open-circuit voltage (Voc) of 1.33V, short-circuit current (Jsc) of 21.46 mA/cm2, and fill factor (FF) of 88.53% at the optimized device configuration. Therefore, these findings will give useful guidance in the replacement of frequently used detrimental Pb-based perovskite with an environmentally safe and highly efficient inorganic PSC. This research advances the development of flexible perovskite with a simple fabrication procedure and great device performance.
无铅双钙钛矿具有稳定、无毒等优点,具有广阔的光电材料应用前景。我们对具有NiOx空穴传输层(HTL)的无毒无机Cs2AgBiBr6吸收剂光伏(PV)器件进行了数值模拟研究。本文利用一维太阳能电池电容模拟器(SCAPS-1D)设计了Ni/NiOx/Cs2AgBiBr6/TiO2/FTO/Al的电池结构。发现Cs2AgBiBr6钙钛矿层的最佳厚度为600 nm。研究了所设计电池的各种物理参数对光伏输出的影响。为了了解所提出的钙钛矿太阳能电池(PSC)的稳定性,还分析了工作温度对PV效率的影响。在优化的器件配置下,开路电压(Voc)为1.33V,短路电流(Jsc)为21.46 mA/cm2,填充系数(FF)为88.53%,功率转换效率(PCE)为25.38%。因此,这些发现将为用环保安全和高效的无机PSC取代经常使用的有害铅基钙钛矿提供有用的指导。该研究以其简单的制备工艺和优异的器件性能推动了柔性钙钛矿的发展。
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引用次数: 0
Load Frequency Control of an Inter Connected Power System Using PSO Based PID Controller 基于粒子群算法的并联电力系统负荷频率控制
Mohammad Sulaiman Redoy, Ruma
The objective of this paper is to design an optimum controller for an interconnected power system based on conventional Proportional-Integral-Derivative (PID) controller and Particle Swarm Optimization (PSO) optimization technique for better Load Frequency Control (LFC) in the event of changing load. This proposed PID-PSO controller provides better solutions in terms of rising time, settling time, minimum overshoot and tie-line error. In this proposed simulation model, two power areas with multi-source generation units are connected via a tie-line connection. Parameters of the PID controller are tuned using the PSO algorithm for optimum output. The system was designed and simulated using MATLAB software using SIMULINK. The results are presented in terms of frequency deviation, tie line error, and settling time.
本文的目的是在传统的比例-积分-导数(PID)控制器和粒子群优化(PSO)优化技术的基础上,设计一种最优的互联电力系统控制器,以便在负荷变化的情况下实现更好的负荷频率控制。所提出的PID-PSO控制器在上升时间、稳定时间、最小超调量和联络线误差方面提供了较好的解决方案。在该仿真模型中,两个具有多源发电机组的电力区域通过联络线连接。采用粒子群算法对PID控制器的参数进行调谐以获得最优输出。利用MATLAB软件SIMULINK对系统进行了设计和仿真。给出了频率偏差、联络线误差和沉降时间的计算结果。
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引用次数: 1
Detection of Power Quality Disturbances in Distribution Grid Network with Photovoltaic Penetration 光伏渗透下配电网电能质量扰动检测
Abdullah Al Mamun, K. Ahmed, S. Chowdhury
This paper aims to study the power quality disturbances that might occur in a Photovoltaic (PV) connected distribution grid. Recently, there has been rapid increase in grid-connected PV plants to meet the ever-increasing peak consumer demands. Grid-connected PV sources as well as non-linear loads introduce Power Quality issues. The PQ issues such as voltage sag, voltage swell, transients, total harmonic distortions, etc. might have an adverse effect on the reliable operation of power plant and distribution network. The first step in preparing a reliable grid system is to understand the types of quality issues and their effects. In this paper, the PQ issues that occur in the low voltage and medium voltage distribution grid due to the PV penetration and nonlinear loads are studied. To assess the quality issues, a MATLAB/SIMULINK model has been developed where a PV source has been integrated into the distribution network. Voltage variation caused by faults, total harmonic distortions due to PV penetration, and transient stability issues due to nonlinear loads have been simulated and analyzed.
本文旨在研究光伏并网配电网中可能出现的电能质量扰动。近年来,为满足日益增长的用电高峰需求,并网光伏电站数量迅速增加。并网光伏电源以及非线性负载引入了电能质量问题。电压暂降、电压膨胀、暂态、总谐波畸变等PQ问题可能会对电厂和配电网的可靠运行产生不利影响。准备一个可靠的电网系统的第一步是了解质量问题的类型及其影响。本文研究了中低压配电网中由于光伏渗透和非线性负荷而产生的PQ问题。为了评估质量问题,已经开发了一个MATLAB/SIMULINK模型,其中PV源已集成到配电网中。模拟和分析了故障引起的电压变化、PV穿透引起的总谐波畸变以及非线性负载引起的暂态稳定问题。
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引用次数: 2
Effect of the PMMA Layer Thickness on the Performance of Lab-on-fiber Radiation Dosimeter PMMA层厚对实验室-光纤辐射剂量计性能的影响
Ifat Arin, Md. Nahiduzzaman, Md Jahirul Islam, M. R. Kaysir
Lab-on-fiber (LOF) technology has diverse applications in different types of sensing and actuating nano-systems. Radiation dosimeter based on LOF can be effectively used to monitor radiation dose, where the optical properties are quantified due to the variation of radiation dose. In this work, we investigate the performance of an optical fiber tip having a patterned PMMA layer which is covered by a thin Au overlay. We observe the shifts in resonant frequency of the reflection spectra according to the variation of PMMA layer. In contrast, PMMA thickness is changed by the dose rate and correspondingly shifts the resonant frequency of the reflection spectra. In this analysis, design frequency ranges from 210 THz to 214 THz (wavelength 1402 nm to 1430nm). With the increase of the PMMA layer thickness, the peak-to-peak difference (in dB) of the reflection spectra S11, S21 decreases, and the minima and maxima point shift in the left-hand side (frequency decreasing in manner). This analysis would help designers to tune important design parameters to enhance the performance of the dosimeter.
光纤实验室(LOF)技术在不同类型的传感和驱动纳米系统中有不同的应用。基于LOF的辐射剂量计可以有效地用于监测辐射剂量,其光学性质是由于辐射剂量的变化而量化的。在这项工作中,我们研究了一种光纤尖端的性能,该光纤尖端有一个图案PMMA层,上面覆盖着一层薄的Au覆盖层。我们观察到反射光谱的谐振频率随PMMA层数的变化而变化。相比之下,PMMA的厚度随剂量率的变化而变化,反射光谱的谐振频率相应发生偏移。在本分析中,设计频率范围为210太赫兹至214太赫兹(波长为1402 nm至1430nm)。随着PMMA层厚的增加,反射光谱S11、S21的峰间差(以dB为单位)减小,最小值和最大值的点移在左侧(频率呈下降趋势)。这种分析将有助于设计人员调整重要的设计参数,以提高剂量计的性能。
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引用次数: 0
Prediction of Bank Performance Using Machine Learning Classifiers Optimized by Genetic Algorithm 利用遗传算法优化的机器学习分类器预测银行业绩
Ummey Hany Ainan, Md. Nur-E-Arefin
Bank performance is defined as the reflection of the way by which the assets of the bank are utilized in a form which enables it to accomplice its targets. Economic development highly depends on the functionalities of the banks. In past statistical approach is used to predict bank performance. Nowadays Machine Learning (ML) approaches are used in banking sector for better accuracy. In this work three famous Machine Learning classifiers named Random Forest (RF), Support Vector Machine (SVM) and Logistic Regression (LR) are used to find out the bank performance. The dataset used in this work are consist of 50 Turkish banks, 30 American banks and 20 European banks. The data have 24 performance indicators that measures performance from the year of 2010 to 2020. CAMEL technique is applied in this dataset in order to find ratings of the banks. In this study Genetic Algorithm (GA) plays a vital role. GA is used as optimizer and feature selector. At the end the models are evaluated with and without feature selection as well as with and without optimization. In this study SVM with optimization but without feature selection provides best accuracy among all the models which is 97.06% test accuracy. On the other hand, LR provides 80.21% test accuracy with feature selection but without optimization which is lowest in the whole study.
银行业绩被定义为反映银行资产以一种使其能够实现其目标的形式被利用的方式。经济的发展在很大程度上取决于银行的功能。过去用统计方法来预测银行业绩。如今,机器学习(ML)方法被用于银行部门,以提高准确性。在这项工作中,使用随机森林(RF),支持向量机(SVM)和逻辑回归(LR)这三个著名的机器学习分类器来找出银行绩效。这项工作中使用的数据集包括50家土耳其银行,30家美国银行和20家欧洲银行。该数据有24项绩效指标,衡量2010年至2020年的绩效。为了找到银行的评级,在这个数据集中应用了CAMEL技术。在此研究中,遗传算法(GA)起着至关重要的作用。采用遗传算法作为优化器和特征选择器。最后对模型进行了特征选择和非特征选择以及优化和非优化的评估。在本研究中,经过优化但未进行特征选择的SVM在所有模型中准确率最高,达到97.06%的测试准确率。另一方面,LR具有特征选择但未进行优化的测试准确率为80.21%,在整个研究中最低。
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引用次数: 0
Life Time Enhancement of Wireless Sensor Network by Modified Threshold of LEACH Protocol 改进LEACH协议阈值的无线传感器网络寿命增强
Mohammad Hanif, Md. Saiful Islam
Due to the low power storing capability, extending the life span of microsensors in wireless sensor networks (WSN) is a difficult task. To maximize the lifespan of microsensors by reducing the dissipation of energy, Low Energy Adaptive Clustering Hierarchy (LEACH) protocol is utilized. In this study, the LEACH protocol's threshold selection is modified in order to identify the best cluster head to extend the lifetime of WSN. The authors looked at two modified LEACH protocols (mLEACH1 and mLEACH2) to minimize energy consumption, as well as to improve the sensor nodes' lifespan. Furthermore, the performance of these two modified LEACH protocols is evaluated by comparing them to the conventional LEACH protocol with respect to number of dead nodes and amount of energy left in the network. According to the analysis of FND (first node dead) and HNA (half node alive) performances, the mLEACH1 can improve the sensor network's lifetime by 4.24% to 8.67% compared to traditional LEACH. Moreover, by lowering sensor nodes' death rate and maintaining the WSN's energy dissipation rate lower for a longer period of time, mLEACH2 can extend the network's lifespan by 253.73% and 331.5% for FND and HNA, respectively, when compared to standard LEACH.
由于微传感器的功耗存储能力低,延长其寿命是无线传感器网络(WSN)中的一个难题。为了通过减少能量耗散来最大化微传感器的使用寿命,采用了低能量自适应聚类层次(LEACH)协议。本研究对LEACH协议的阈值选择进行了改进,以确定最佳簇头,从而延长WSN的生存期。作者研究了两种改进的LEACH协议(mLEACH1和mLEACH2),以最大限度地减少能耗,并提高传感器节点的寿命。此外,通过将这两种改进的LEACH协议与传统LEACH协议在网络中死亡节点数量和剩余能量方面进行比较,评估了这两种改进的LEACH协议的性能。根据FND(第一节点死亡)和HNA(半节点存活)性能分析,mLEACH1与传统LEACH相比,可将传感器网络的寿命提高4.24% ~ 8.67%。此外,与标准LEACH相比,mLEACH2通过降低传感器节点死亡率和较长时间保持较低的WSN能量耗散率,可使FND和海航网络的寿命分别延长253.73%和331.5%。
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引用次数: 0
FPGA Implementation of Multiple Single Phase PWM Inverters with Configurable Duty Cycle and Dead Time 可配置占空比和死区时间的多个单相PWM逆变器的FPGA实现
Md. Sohel Rana, Mamun Bepari, K. Ghosh, M. Abedin
Nowadays power inverters are widely used in various applications which range from domestic to industrial facilities. The Pulse Width Modulation (PWM) techniques are extensively used for the controlling of inverter circuit in which dead time, duty cycle, and frequency are important performance parameters. In the case of controlling multiple inverters with a single controller, control signals with embedded dead-time for all the inverters may lead to poor performance for some inverters due to shoot through and controlling of multiple inverters with common duty cycle and frequency cannot fulfill the requirement. Moreover, the use of an individual controller for each inverter is not cost-effective. In this work, the PWM switching strategies are designed with Verilog Hardware Description Language (HDL) and implemented using Xilinx Spartan-6 Nexys3 FPGA with precise control of dead time, duty cycle and frequency. This FPGA based controller enables us to control any inverter designed for a specific purpose and the same inverter for different applications by configuring its frequency and duty cycle. For the present work, we have generated six PWM signals with three different dead times and duty cycles which can control three single-phase PWM inverters with specified dead time and found that FPGA implementation provide desired output with negligible distortion avoiding shoot through.
如今,电力逆变器广泛应用于从家庭到工业设施的各种应用中。脉宽调制(PWM)技术广泛应用于逆变电路的控制,其中死区时间、占空比和频率是逆变电路的重要性能参数。在用一个控制器控制多台逆变器的情况下,所有逆变器的控制信号都带有嵌入式死区时间,可能会导致部分逆变器的性能不佳,并且对多个占空比和频率相同的逆变器的控制无法满足要求。此外,为每个逆变器使用单独的控制器是不划算的。在这项工作中,PWM开关策略采用Verilog硬件描述语言(HDL)设计,并使用Xilinx spartan6 Nexys3 FPGA实现,可以精确控制死区时间、占空比和频率。这种基于FPGA的控制器使我们能够通过配置其频率和占空比来控制为特定目的设计的任何逆变器和用于不同应用的相同逆变器。在目前的工作中,我们产生了六个具有三种不同死区时间和占空比的PWM信号,可以控制三个具有指定死区时间的单相PWM逆变器,并发现FPGA实现提供了理想的输出,失真可以忽略,避免了穿通。
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引用次数: 1
期刊
2022 International Conference on Advancement in Electrical and Electronic Engineering (ICAEEE)
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