Elektronika Ir Elektrotechnika最新文献

Classification of Resampled Pediatric Epilepsy EEG Data Using Artificial Neural Networks with Discrete Fourier Transforms 利用离散傅立叶变换的人工神经网络对重新采样的小儿癫痫脑电图数据进行分类

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.34433

Temel Sonmezocak, Gizem Guler, Merih Yildiz

{"title":"Classification of Resampled Pediatric Epilepsy EEG Data Using Artificial Neural Networks with Discrete Fourier Transforms","authors":"Temel Sonmezocak, Gizem Guler, Merih Yildiz","doi":"10.5755/j02.eie.34433","DOIUrl":"https://doi.org/10.5755/j02.eie.34433","url":null,"abstract":"Epilepsy is a neurological disorder commonly observed in children. Currently, electroencephalography (EEG) is widely used as the most important diagnostic method for epilepsy in medical practice. The diagnosis of epilepsy in pediatric patients is challenging due to their high level of activity and incomplete brain development. In this study, data sampled at 256 Hz were obtained from patients between the ages of 7–12, collected by Boston Children’s Hospital. First, the image intervals that contain seizure waves were identified in the datasets, and the discrete-time Fourier transform (DFT) was applied. The amplitude-frequency features of the frequency spectrum in seizure and nonseizure states were obtained, and patients were classified for seizure detection using a multilayer perceptron (MLP) based on an artificial neural network (ANN) architecture. In the next step, the EEG signals were resampled at low frequencies, and the same analyses were repeated to minimise the disadvantages of limiting factors such as storage space and processing power, resulting in reduced storage space usage and more efficient performance.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":"17 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139003675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of a High-Performance Control Scheme for a Grid-Connected DFIG‐Based Wind Energy Conversion System Using Model Predictive Control and Hysteresis Model 利用模型预测控制和滞后模型为基于并网双馈变流器的风能转换系统设计高性能控制方案

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.34722

Hamed Kamel Eddine Zine, Abed Khoudir

引用次数: 0

Simulation of Autonomous Driving for a Line-Following Robotic Vehicle: Determining the Optimal Manoeuvring Mode 线路跟踪机器人车辆的自主驾驶模拟：确定最佳操纵模式

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.32364

Murat Bakirci

{"title":"Simulation of Autonomous Driving for a Line-Following Robotic Vehicle: Determining the Optimal Manoeuvring Mode","authors":"Murat Bakirci","doi":"10.5755/j02.eie.32364","DOIUrl":"https://doi.org/10.5755/j02.eie.32364","url":null,"abstract":"Mobile robotic systems offer valuable test platforms due to their shared features with autonomous vehicles, including features such as sensor technologies, navigation algorithms, and control systems. However, constraints in laboratory environments or technical resources, along with the need for extensive testing, often necessitate the use of virtual test laboratories. While line-following is a widely preferred application in mobile robotics, research on this topic within virtual laboratories is limited. This study pioneers the use of a car-like robotic vehicle in conducting line-following tests within a virtual laboratory environment. To facilitate these tests, a virtual simulator was developed to meet the requirements of realistic simulations. This simulator includes simulated elements, such as roads and environmental features, along with virtual sensors designed to collect and process dynamic motion data. An exceptional aspect of this study is its ability to collect consistent dynamic travel data by sampling realistic sensor information within a virtual environment. The developed line-following algorithm employs a controller to minimise lateral deviation while the robotic vehicle follows a road line during its movement. The study conducted virtual driving tests using two different manoeuvre modes on four distinct road segments, exploring how the manoeuvring style influences the driving quality. It was demonstrated that in the low manoeuvre mode, the ride is more comfortable, but exhibits a greater route deviation due to reduced oscillation, while the high manoeuvre mode exhibits the opposite behaviour.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":"62 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139005908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep Learning Method for Power Side-Channel Analysis on Chip Leakages 针对芯片泄漏的电源侧通道分析的深度学习方法

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.34650

Amjed Abbas Ahmed, Rana Ali Salim, Mohammad Kamrul Hasan

引用次数: 0

Time-Based High-Pass, Low-Pass, Shelf, and Notch Filters 时基高通、低通、搁栅和陷波滤波器

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.35277

Nicolai J. Dahl, P. L. Muntal, Michael A. E. Andersen

引用次数: 0

Optimum Design of an 18-Pulse Phase Shifting Autotransformer Rectifier to Improve the Power Quality of Cascaded H-Bridge Motor Driver 优化设计 18 脉冲移相自耦变压器整流器以改善级联 H 桥电机驱动器的电能质量

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.35126

Adil Alahmad, F. Kaçar, Cengiz Polat Uzunogl

{"title":"Optimum Design of an 18-Pulse Phase Shifting Autotransformer Rectifier to Improve the Power Quality of Cascaded H-Bridge Motor Driver","authors":"Adil Alahmad, F. Kaçar, Cengiz Polat Uzunogl","doi":"10.5755/j02.eie.35126","DOIUrl":"https://doi.org/10.5755/j02.eie.35126","url":null,"abstract":"Due to its simplicity, efficiency, and dependability, the multipulse rectifier is widely used in electrical systems. In the presented work, an optimum design of an 18-pulse rectifier is achieved by comparing the most used configurations on the market. The 18-phase shifting autotransformer (18-PSAT) rectifier is a cheaper alternative to conventional rectifiers to reduce system harmonics. After a thorough study of the market needs and available use, this paper discusses four different structures that provide harmonic levels according to IEEE 519 limitations. An innovative 18-PSAT is shown, studied, simulated, produced, and tested with low power loss rates. The Delta differential configuration primarily emphasises lowering the loss power rating for improved power quality. With its simple structure, easy assembly, and direct connection to diodes, the proposed Delta differential configuration provides higher power quality and can cancel harmonics. To determine which 18-PSAT rectifier unit has the best weight, size, and power quality, a comparison of the selected topologies is made. A comprehensive comparison of each topology has simulation results showing current, voltage, and total harmonic distortion (THD) using MATLAB Simulink. The simulation results show that the total harmonic distortion is under 2.9 % when adopting the suggested Delta differential configuration topology. Compared to other designs, the suggested 18-pulse layout reduces overall cost and footprint by a large margin. It is also demonstrated that the DC load power is about 85 % of the recommended rectifier rating.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":"107 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138976903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Parallel Connected Hybrid Microstrip-Substrate Integrated Waveguide Bandstop Filter 并联混合微带-基底集成波导带阻滤波器

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.31628

Kemal Guvenli, S. Yenikaya, Mustafa Secmen

引用次数: 0

Identifying the Causes of Ship Collisions Accident Using Text Mining and Bayesian Networks 利用文本挖掘和贝叶斯网络识别船舶碰撞事故的原因

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-12-13 DOI: 10.5755/j02.eie.35630

Jianguo Yu, Zhihua Wu, Wei Liu, Wenji Zhao

{"title":"Identifying the Causes of Ship Collisions Accident Using Text Mining and Bayesian Networks","authors":"Jianguo Yu, Zhihua Wu, Wei Liu, Wenji Zhao","doi":"10.5755/j02.eie.35630","DOIUrl":"https://doi.org/10.5755/j02.eie.35630","url":null,"abstract":"Under the backdrop of the robust growth of the global economy, the water transport industry is experiencing rapid development, resulting in an increase in ship collisions and a critical water traffic safety situation. This study uses text mining techniques to gather a corpus of data. The corpus includes human factors, ship factors, natural environmental factors, and management factors, which are used as target data to obtain a high-dimensional sparse original feature vector space set comprising eigenvalues and eigenvalue weight attributes. Chi-square statistics are utilised to reduce dimensionality, resulting in a final set of 33-dimensional text feature items that determine the causal factors of ship collision risk. Taking the four steps involved in the collision process as the primary focus, a Bayesian network structure for ship collision risk is constructed based on the “human-ship-environment-management” system. By incorporating existing ship collision accident/danger reports, conditional probability tables are computed for each node in the Bayesian network structure, enabling the modelling of ship collision risk. The model is validated through an example, revealing that, under relevant conditions, the probability of collision exceeds 90 %. This finding demonstrates the validity of the model and allows one to deduce the primary cause of ship collision accidents.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":"174 S403","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139006193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

BIOFOTONIKA KLASYCZNA I KWANTOWA Część 7 – TECHNIKI LABORATORYJNE, OBRAZOWANIE TERMOAKUSTYCZNE, FOTOAKUSTYCZNE, FOTOTERMALNE 经典和定量生物光子学第 7 部分 - 实验室技术、热成像仪、光成像仪、光成像仪

4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-10-30 DOI: 10.15199/13.2023.10.3

Ryszard Romaniuk

引用次数: 0

SYSTEM ZARZĄDZANIA I AKWIZYCJI DANYCH DLA DRUKU 3D OKREŚLAJĄCY ILOŚĆ FILAMENTÓW I CZASU PRACY 用于 3d 打印的管理和数据采集系统，可指定长丝数量和运行时间

4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2023-10-30 DOI: 10.15199/13.2023.10.5

Makowski Tomasz

引用次数: 0