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A cost-effective and optimized maximum powerpoint tracking system for the photovoltaic model 光伏模型的成本效益和优化的最大ppt跟踪系统
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp4942-4949
Yoganandini Arehalli Puttalingaiah, Anitha Gowda Shesadri
Solar energy is naturally available from sun, and it can be extracted by using a photovoltaic (PV) cell. However, solar energy extraction entirely depends on the climatic conditions and angle of rays falling on PV cells. Hence, maximum powerpoint tracking (MPPT) is considered in most areas under variable climatic conditions, which acts as a controller unit for PV cells. MPPT can enhance the efficiency of PV cells. However, designing an MPPT model is challenging as different uncertainties in the climatic condition may lead to more fluctuations in voltage and current in PV cells. Under the shaded condition, the PV cell may have other MPPT points that lead to the PV cell’s low efficiency in analyzing maximum power. Hence, this paper introduces a cost-effective and optimized system for the PV model that can find optimal power and improve PV cells’ efficiency. The proposed system achieves better computational performance with ~35% and ~42% than existing MPPT techniques. The improved particle swarm optimization (PSO) is smoother due to the enhanced form of MPP tracking. Hence, improved PSO takes 0.038 sec while the existing PSO technique takes 0.045 sec to obtain the MPP tracking.
太阳能是天然的,可以从太阳获得,并且可以通过使用光伏(PV)电池来提取。然而,太阳能的提取完全取决于气候条件和照射在光伏电池上的光线角度。因此,在可变气候条件下,大多数地区都考虑最大ppt跟踪(MPPT),它作为光伏电池的控制单元。MPPT可以提高光伏电池的效率。然而,设计MPPT模型具有挑战性,因为气候条件的不同不确定性可能导致光伏电池中的电压和电流波动更大。在阴影条件下,光伏电池可能存在其他MPPT点,导致光伏电池在分析最大功率时效率较低。因此,本文介绍了一种性价比高的光伏模型优化系统,该系统可以找到最优功率,提高光伏电池的效率。该系统的计算性能比现有的MPPT技术提高了~35%和~42%。改进的粒子群算法由于增强了MPP跟踪的形式而更加平滑。因此,改进的粒子群算法获得MPP跟踪的时间为0.038秒,而现有粒子群算法获得MPP跟踪的时间为0.045秒。
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引用次数: 0
Breast cancer classification with histopathological image based on machine learning 基于机器学习的组织病理图像乳腺癌分类
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5885-5897
Jia Rong Leow, W. Khoh, Ying-Han Pang, Hui-Yen Yap
Breast cancer represents one of the most common reasons for death in the worldwide. It has a substantially higher death rate than other types of cancer. Early detection can enhance the chances of receiving proper treatment and survival. In order to address this problem, this work has provided a convolutional neural network (CNN) deep learning (DL) based model on the classification that may be used to differentiate breast cancer histopathology images as benign or malignant. Besides that, five different types of pre-trained CNN architectures have been used to investigate the performance of the model to solve this problem which are the residual neural network-50 (ResNet-50), visual geometry group-19 (VGG-19), Inception-V3, and AlexNet while the ResNet-50 is also functions as a feature extractor to retrieve information from images and passed them to machine learning algorithms, in this case, a random forest (RF) and k-nearest neighbors (KNN) are employed for classification. In this paper, experiments are done using the BreakHis public dataset. As a result, the ResNet-50 network has the highest test accuracy of 97% to classify breast cancer images.
乳腺癌是全世界最常见的死亡原因之一。它的死亡率远远高于其他类型的癌症。早期发现可以增加接受适当治疗和生存的机会。为了解决这个问题,这项工作提供了一个基于卷积神经网络(CNN)深度学习(DL)的分类模型,可用于区分乳腺癌组织病理学图像的良性或恶性。此外,五种不同类型的预训练CNN架构已经被用来研究模型的性能来解决这个问题,它们是残余神经网络-50 (ResNet-50),视觉几何组-19 (VGG-19), Inception-V3和AlexNet,而ResNet-50还可以作为特征提取器从图像中检索信息并将其传递给机器学习算法,在这种情况下,采用随机森林(RF)和k近邻(KNN)进行分类。本文使用BreakHis公共数据集进行了实验。因此,ResNet-50网络在乳腺癌图像分类方面的测试准确率最高,达到97%。
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引用次数: 0
An approach of ontology and knowledge base for railway maintenance 一种面向铁路维修的本体与知识库方法
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5282-5295
Z. Ragala, A. Retbi, S. Bennani
Maintenance methods have become automated and innovative, especially with the transition to maintenance 4.0. However, social issues such as coronavirus disease of 2019 (COVID-19) and the war in Ukraine have caused significant departures of maintenance experts, resulting in the loss of enormous know-how. As part of this work, we will propose a solution by exploring the knowledge and expertise of these experts for the purpose of sharing and conservation. In this perspective, we have built a knowledge base based on experience and feedback. The proposed method illustrates a case study based on the single excitation configuration interaction (SECI) method to optimally capture the explicit and tacit knowledge of each technician, as well as the theoretical basis, the model of Nonaka and Takeuchi.
维护方法已经变得自动化和创新,特别是随着向维护4.0的过渡。然而,2019年冠状病毒病(新冠肺炎)和乌克兰战争等社会问题导致维修专家大量离职,导致大量专业知识流失。作为这项工作的一部分,我们将通过探索这些专家的知识和专业知识来提出一个解决方案,以共享和保护。从这个角度来看,我们建立了一个基于经验和反馈的知识库。所提出的方法说明了一个基于单激励配置交互(SECI)方法的案例研究,以最佳地捕捉每个技术人员的显性和隐性知识,以及理论基础,Nonaka和Takeuchi的模型。
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引用次数: 1
Automotive Ethernet architecture and security: challenges and technologies 汽车以太网架构与安全:挑战与技术
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5209-5221
Wael Toghuj, Nidal M. Turab
Vehicle infrastructure must address the challenges posed by today's advances toward connected and autonomous vehicles. To allow for more flexible architectures, high-bandwidth connections and scalability are needed to connect many sensors and electronic control units (ECUs). At the same time, deterministic and low latency is a critical and significant design requirement to support urgent real-time applications in autonomous vehicles. As a recent solution, the time-sensitive network (TSN) was introduced as Ethernet-based amendments in IEEE 802.1 TSN standards to meet those needs. However, it had hurdle to be overcome before it can be used effectively. This paper discusses the latest studies concerning the automotive Ethernet requirements, including transmission delay studies to improve worst-case end-to-end delay and end-to-end jitter. Also, the paper focuses on the securing Ethernet-based in-vehicle networks (IVNs) by reviewing new encryption and authentication methods and approaches.
汽车基础设施必须应对当今互联汽车和自动驾驶汽车发展带来的挑战。为了实现更灵活的架构,需要高带宽连接和可扩展性来连接许多传感器和电子控制单元(ECU)。同时,确定性和低延迟是支持自动驾驶汽车紧急实时应用的关键和重要设计要求。作为最近的解决方案,时间敏感网络(TSN)被引入作为IEEE 802.1 TSN标准中基于以太网的修正,以满足这些需求。然而,在它被有效使用之前,它还有一个障碍需要克服。本文讨论了有关汽车以太网需求的最新研究,包括改善最坏情况下端到端延迟和端到端抖动的传输延迟研究。此外,本文还通过回顾新的加密和身份验证方法和方法,重点介绍了基于以太网的车载网络(IVN)的安全性。
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引用次数: 1
Intelligent solution for automatic online exam monitoring 智能在线考试自动监控解决方案
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5333-5341
Ghizlane Moukhliss, Reda Filali Hilali, H. Belhadaoui
E-learning has shown significant growth in recent years due to its unavoidable benefits in unexpected situations such as the coronavirus disease 2019 (COVID-19) pandemic. Indeed, online exam is a very important component of an online learning program. It allows higher education institutions to assess student learning outcomes. However, cheating in exams is a widespread phenomenon worldwide, which creates several challenges in terms of integrity, reliability and security of online examinations. In this study, we propose a continuous authentication system for online exam. Our intelligent inference system based on machine learning algorithms and rules, detects continuously any inappropriate behavior in order to limit and prevent fraud. The proposed model includes several modules to enhance security, namely the registration module, the continuous students’ identity verification and control module, the live video stream and the end-to-end sessions recording.
近年来,由于在2019年冠状病毒病(COVID-19)大流行等意外情况下具有不可避免的优势,电子学习呈现出显著增长。事实上,在线考试是在线学习计划的一个非常重要的组成部分。它允许高等教育机构评估学生的学习成果。然而,考试作弊在世界范围内是一个普遍现象,这给在线考试的完整性、可靠性和安全性带来了一些挑战。在这项研究中,我们提出了一个在线考试的连续认证系统。我们的智能推理系统基于机器学习算法和规则,不断检测任何不适当的行为,以限制和防止欺诈。该模型包括注册模块、连续学生身份验证和控制模块、实时视频流和端到端会话记录等几个模块来增强安全性。
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引用次数: 0
Concept drift and machine learning model for detecting fraudulent transactions in streaming environment 流媒体环境下检测欺诈交易的概念漂移和机器学习模型
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5560-5568
A. Shahapurkar, Rudragoud Patil
In a streaming environment, data is continuously generated and processed in an ongoing manner, and it is necessary to detect fraudulent transactions quickly to prevent significant financial losses. Hence, this paper proposes a machine learning-based approach for detecting fraudulent transactions in a streaming environment, with a focus on addressing concept drift. The approach utilizes the extreme gradient boosting (XGBoost) algorithm. Additionally, the approach employs four algorithms for detecting continuous stream drift. To evaluate the effectiveness of the approach, two datasets are used: a credit card dataset and a Twitter dataset containing financial fraud-related social media data. The approach is evaluated using cross-validation and the results demonstrate that it outperforms traditional machine learning models in terms of accuracy, precision, and recall, and is more robust to concept drift. The proposed approach can be utilized as a real-time fraud detection system in various industries, including finance, insurance, and e-commerce.
在流媒体环境中,数据以持续的方式不断生成和处理,有必要快速检测欺诈交易,以防止重大财务损失。因此,本文提出了一种基于机器学习的方法来检测流媒体环境中的欺诈交易,重点是解决概念漂移问题。该方法采用了极限梯度提升(XGBoost)算法。此外,该方法采用了四种算法来检测连续流漂移。为了评估该方法的有效性,使用了两个数据集:一个是信用卡数据集,另一个是包含金融欺诈相关社交媒体数据的推特数据集。使用交叉验证对该方法进行了评估,结果表明,该方法在准确性、精确度和召回率方面优于传统的机器学习模型,并且对概念漂移更具鲁棒性。所提出的方法可以用作各种行业的实时欺诈检测系统,包括金融、保险和电子商务。
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引用次数: 0
A stochastic approach for evaluating production planning efficiency under uncertainty 不确定条件下生产计划效率的随机评估方法
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5542-5549
M. Wahyudi, Hengki Tamando Sihotang, S. Efendi, M. Zarlis, H. Mawengkang, Desi Vinsensia
Planning production is an essential component of the decision-making process, which has a direct bearing on the effectiveness of production systems. This study’s objective is to investigate the efficiency performance of decision-making units (DMU) in relation to production planning issues. However, the production system in a manufacturing environment is frequently subject to uncertain situations, such as demand and labor, and this can have an effect not only on production but also on profit. The robust stochastic data envelopment analysis model was proposed in this study with maximizing the number of outputs as the objective function thus means of handling uncertainty in input and output in production planning problems. This model, which is based on stochastic data envelopment analysis and a method of robust optimization, was proposed with the intention of providing an efficient plan of production for each DMU of stage production. The model is applied to small and medium-sized businesses (SMEs), with inputs consisting of the cost of labor, the number of customers, and the quantity of raw materials, and the output consisting of profit and revenue. It has been demonstrated through implementation that the proposed model is both efficient and effective.
生产计划是决策过程的重要组成部分,直接关系到生产系统的有效性。本研究的目的是调查决策单元(DMU)在生产计划问题上的效率表现。然而,制造环境中的生产系统经常受到不确定情况的影响,如需求和劳动力,这不仅会影响生产,还会影响利润。本文提出了以产出数量最大化为目标函数的稳健随机数据包络分析模型,从而处理生产计划问题中输入和输出的不确定性。该模型基于随机数据包络分析和稳健优化方法,旨在为阶段生产的每个DMU提供有效的生产计划。该模型适用于中小型企业,投入由劳动力成本、客户数量和原材料数量组成,产出由利润和收入组成。通过实施证明,所提出的模式既高效又有效。
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引用次数: 0
Sensor fault reconstruction for wind turbine benchmark model using a modified sliding mode observer 基于改进滑模观测器的风机基准模型传感器故障重构
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5066-5075
Mohammed Taouil, Abdelghani El Ougli, B. Tidhaf, Hafida Zrouri
This paper proposes a fault diagnosis scheme applied to a wind turbine system. The technique used is based on a modified sliding mode observer (SMO), which permits the reconstruction of actuator and sensor faults. A wind turbine benchmark with a real sequence of wind speed is exploited to validate the proposed fault detection and diagnosis scheme. Rotor speed, generator speed, blade pitch angle, and generator torque have different orders of magnitude. As a result, the dedicated sensors are susceptible to faults of quite varying magnitudes, and estimating simultaneous sensor faults with accuracy using a classical SMO is difficult. To address this issue, some modifications are made to the classic SMO. In order to test the efficiency of the modified SMO, several sensor fault scenarios have been simulated, first in the case of separate faults and then in the case of simultaneous faults. The simulation results show that the sensor faults are isolated, detected, and reconstructed accurately in the case of separate faults. In the case of simultaneous faults, with the proposed modification of SMO, the faults are precisely isolated, detected, and reconstructed, even though they have quite different amplitudes; thus, the relative gap does not exceed 0.08% for the generator speed sensor fault.
提出了一种适用于风力发电系统的故障诊断方案。所使用的技术是基于一个改进的滑模观测器(SMO),它允许重建执行器和传感器故障。利用具有真实风速序列的风力机基准来验证所提出的故障检测与诊断方案。转子转速、发电机转速、叶片俯仰角和发电机转矩有不同的数量级。因此,专用传感器容易受到相当大的变化幅度的故障,并且使用经典SMO精确估计同时传感器故障是困难的。为了解决这个问题,对经典的SMO进行了一些修改。为了测试改进的SMO算法的有效性,首先模拟了不同故障情况下的传感器故障,然后模拟了同时故障情况。仿真结果表明,在分离故障的情况下,传感器故障能够被准确地隔离、检测和重构。在同时发生故障的情况下,采用改进的SMO方法可以精确地隔离、检测和重建故障,即使它们的幅值相差很大;因此,发电机转速传感器故障的相对间隙不超过0.08%。
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引用次数: 0
An effective deep learning network for detecting and classifying glaucomatous eye 一种有效的青光眼眼检测和分类的深度学习网络
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5305-5313
Md. Tanvir Ahmed, Imran Ahmed, Rubayed Ahmmad Rakin, Mst. Tuhin Akter, Nusrat Jahan
Glaucoma is a well-known complex disease of the optic nerve that gradually damages eyesight due to the increase of intraocular pressure inside the eyes. Among two types of glaucoma, open-angle glaucoma is mostly happened by high intraocular pressure and can damage the eyes temporarily or sometimes permanently, another one is angle-closure glaucoma. Therefore, being diagnosed in the early stage is necessary to safe our vision. There are several ways to detect glaucomatous eyes like tonometry, perimetry, and gonioscopy but require time and expertise. Using deep learning approaches could be a better solution. This study focused on the recognition of open-angle affected eyes from the fundus images using deep learning techniques. The study evolved by applying VGG16, VGG19, and ResNet50 deep neural network architectures for classifying glaucoma positive and negative eyes. The experiment was executed on a public dataset collected from Kaggle; however, every model performed better after augmenting the dataset, and the accuracy was between 93% and 97.56%. Among the three models, VGG19 achieved the highest accuracy at 97.56%.
青光眼是一种众所周知的复杂的视神经疾病,由于眼内压升高而逐渐损害视力。在两种类型的青光眼中,开角型青光眼大多发生在高眼压下,并可暂时或有时永久性地损害眼睛,另一种是闭角型青光眼。因此,在早期阶段进行诊断对于保护我们的视力是必要的。有几种方法可以检测青光眼眼,如眼压计、视野计和角镜检查,但需要时间和专业知识。使用深度学习方法可能是一个更好的解决方案。本研究的重点是使用深度学习技术从眼底图像中识别受开角影响的眼睛。该研究是通过应用VGG16、VGG19和ResNet50深度神经网络架构对青光眼阳性和阴性眼睛进行分类而发展起来的。实验是在从Kaggle收集的公共数据集上进行的;然而,每个模型在扩充数据集后都表现得更好,准确率在93%至97.56%之间。在三个模型中,VGG19的准确率最高,为97.56%。
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引用次数: 0
IPv6 flood attack detection based on epsilon greedy optimized Q learning in single board computer 基于epsilon贪婪优化Q学习的单板机IPv6洪水攻击检测
Q2 Computer Science Pub Date : 2023-10-01 DOI: 10.11591/ijece.v13i5.pp5782-5791
A. Daru, K. Hartomo, H. Purnomo
Internet of things is a technology that allows communication between devices within a network. Since this technology depends on a network to communicate, the vulnerability of the exposed devices increased significantly. Furthermore, the use of internet protocol version 6 (IPv6) as the successor to internet protocol version 4 (IPv4) as a communication protocol constituted a significant problem for the network. Hence, this protocol was exploitable for flooding attacks in the IPv6 network. As a countermeasure against the flood, this study designed an IPv6 flood attack detection by using epsilon greedy optimized Q learning algorithm. According to the evaluation, the agent with epsilon 0.1 could reach 98% of accuracy and 11,550 rewards compared to the other agents. When compared to control models, the agent is also the most accurate compared to other algorithms followed by neural network (NN), K-nearest neighbors (KNN), decision tree (DT), naive Bayes (NB), and support vector machine (SVM). Besides that, the agent used more than 99% of a single central processing unit (CPU). Hence, the agent will not hinder internet of things (IoT) devices with multiple processors. Thus, we concluded that the proposed agent has high accuracy and feasibility in a single board computer (SBC).
物联网是一种允许网络内设备之间进行通信的技术。由于这项技术依赖于网络进行通信,因此暴露设备的漏洞显著增加。此外,使用互联网协议版本6(IPv6)作为互联网协议版本4(IPv4)的继任者作为通信协议对网络构成了重大问题。因此,该协议可用于IPv6网络中的洪泛攻击。作为对抗洪水的对策,本研究利用ε-贪婪优化Q学习算法设计了一种IPv6洪水攻击检测。根据评估,与其他代理商相比,ε为0.1的代理商可以达到98%的准确率和11550的奖励。与控制模型相比,与神经网络(NN)、K近邻(KNN)、决策树(DT)、朴素贝叶斯(NB)和支持向量机(SVM)等其他算法相比,该代理也是最准确的。除此之外,该代理使用了单个中央处理器(CPU)的99%以上。因此,该代理不会阻碍具有多个处理器的物联网(IoT)设备。因此,我们得出结论,所提出的代理在单板计算机(SBC)中具有较高的准确性和可行性。
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引用次数: 0
期刊
International Journal of Electrical and Computer Engineering
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