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THE IMPACT OF ELECTRIC VEHICLES ON SMART GRID 电动汽车对智能电网的影响
Acta Electrotechnica et Informatica Pub Date : 2021-06-09 DOI: 10.15546/aeei-2021-0006
Daniel Pál, L. Beňa, Maksym Oliinyk
{"title":"THE IMPACT OF ELECTRIC VEHICLES ON SMART GRID","authors":"Daniel Pál, L. Beňa, Maksym Oliinyk","doi":"10.15546/aeei-2021-0006","DOIUrl":"https://doi.org/10.15546/aeei-2021-0006","url":null,"abstract":"This publication examines the impact of electric vehicles on the grid. Electric cars are becoming more and more popular in the world. The annual sales quantity of electric cars in the world has an upward trajectory which has some serious implications on the electric grid as well. Both passenger and freight transport are being influenced by this current trend. In addition to various methods of transport, electric cars have the potential to transform traditional grids into smart ones. The primary objective of this study is to examine to what extent the voltage at the nodes changes when electric cars are connected to the network and also sets out to provide us with some overview of the effects on active power loss in the network.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44306318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
PERCEPTION OF THE INCREASED RISK OF PHISHING ATTACKS DURING THE COVID-19 CRISIS 认识到在2019冠状病毒病危机期间网络钓鱼攻击的风险增加
Acta Electrotechnica et Informatica Pub Date : 2021-06-09 DOI: 10.15546/aeei-2021-0003
Jana Handriková, S. Republic, Darina Stachová
{"title":"PERCEPTION OF THE INCREASED RISK OF PHISHING ATTACKS DURING THE COVID-19 CRISIS","authors":"Jana Handriková, S. Republic, Darina Stachová","doi":"10.15546/aeei-2021-0003","DOIUrl":"https://doi.org/10.15546/aeei-2021-0003","url":null,"abstract":"Measures in connection with the COVID-19 crisis have forced a change in the processes taking place in individual organizations - whether in education, state administration or the commercial sphere. CEOs and full-time employees have been forced to ensure that the organization's goals are met in an ever-changing legislative environment, outside the standard work environment, with increased time pressure, in times of financial security concerns, and in times of heightened health or even life concerns. These factors have weakened concerns about one's own security - including the protection of one's own identity or the protection of the employer's assets in cyberspace. The presented research was attended by students, some of them, especially external students, are employees of the public or commercial sphere. The aim of the research was to find out whether students noticed an increased incidence of phishing attacks during the COVID-19 crisis, how they responded to this fact as individuals and how the organizations in which they are employed reacted. Based on the results of this survey, it can be estimated whether users with the development of Internet services are aware that they are an integral part of the cybersecurity system and, based on this fact, adjust their behavior in cyberspace.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45508978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
OPTIMIZATION OF NFC ANTENNA TO MICROCONTROLLER’S BOARD DIMENSIONS NFC天线对微控制器板尺寸的优化
Acta Electrotechnica et Informatica Pub Date : 2021-06-09 DOI: 10.15546/aeei-2021-0004
T. Lenger, A. Pietrikova
{"title":"OPTIMIZATION OF NFC ANTENNA TO MICROCONTROLLER’S BOARD DIMENSIONS","authors":"T. Lenger, A. Pietrikova","doi":"10.15546/aeei-2021-0004","DOIUrl":"https://doi.org/10.15546/aeei-2021-0004","url":null,"abstract":"This paper is focused on Near-Field Communication (NFC), which is one of the most popular wireless communication. Although the NFC was developed in recent years, it is inseparable part of the everyday activities. NFC antenna is the key element for the realization of the NFC. This paper deals with the design of the miniaturized NFC antenna. Basic equations for coil inductance calculation, which are necessary for the NFC antenna design are presented as well. This paper also focuses on the influence of the coil’s aspect ratio to its inductance. The aim of this paper was the optimization of the NFC antenna dimensions. NFC antenna dimensions were calculated according to dimension of microcontroller Printed Circuit Board (PCB), so the antenna can be laminated directly to microcontroller PCB.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45671734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ANALYSIS OF OPERATIONAL PROPERTIES OF VOIP NETWORK voip网络的运行特性分析
Acta Electrotechnica et Informatica Pub Date : 2021-06-09 DOI: 10.15546/aeei-2021-0005
Cyril Filip Kovacik, G. Bugár
{"title":"ANALYSIS OF OPERATIONAL PROPERTIES OF VOIP NETWORK","authors":"Cyril Filip Kovacik, G. Bugár","doi":"10.15546/aeei-2021-0005","DOIUrl":"https://doi.org/10.15546/aeei-2021-0005","url":null,"abstract":"Voice transmission over the Internet network is now taken for granted. Many end-user applications address this issue. However, this paper focuses on the specific use of the SCCP protocol created by Cisco, its implementation in a computer network and end devices, determination of the operational properties of this implementation, and their comparison in different conditions. VoIP traffic is compared at different bandwidths and implemented by different configurations of IP protocols. By investigated implementations of IP protocols are meant IPv4, IPv6, and IPv4 protocol with applied NAT. As part of the application of various IP protocols is also compared VoIP communication with a video stream on a local basis. The conclusion of the paper is devoted to the graphical evaluation of these observations and to draw conclusions based on them.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46837991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A NOVEL IMPLEMENTATION OF A BACKUP SERVER TO MANAGE PPPOE CONNECTIONS IN A PROVIDER NETWORK INFRASTRUCTURE 一种新的备份服务器实现，用于管理提供商网络基础设施中的pppoe连接
Acta Electrotechnica et Informatica Pub Date : 2020-09-28 DOI: 10.15546/aeei-2020-0016
M. Svítek, Eugen Šlapak, G. Bugár
{"title":"A NOVEL IMPLEMENTATION OF A BACKUP SERVER TO MANAGE PPPOE CONNECTIONS IN A PROVIDER NETWORK INFRASTRUCTURE","authors":"M. Svítek, Eugen Šlapak, G. Bugár","doi":"10.15546/aeei-2020-0016","DOIUrl":"https://doi.org/10.15546/aeei-2020-0016","url":null,"abstract":"Since a number of different users are sharing the same physical connection to the remote service provider, a way is needed to keep track of which user traffic should go to and which user should be billed. PPPoE provides for each user-remote site session to learn each other's network addresses. PPPoE has the advantage that neither the telephone company nor the Internet service provider (ISP) needs to provide any special support. Unlike dialup connections, DSL and cable modem connections are \"always on.\" Significance of presented work is describing function and issues of PPPoE connection as an important part of implementation solution in case of managing user connections in an Internet service provider network. Mainly, we focus on one of the most important and least discussed problem of PPPoE – the backup server implementation with the ability to back up any element in the connected network to increase the resilience of the entire system.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41433924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ROBUST SECOND ORDER SLIDING MODE CONTROL OF DOUBLY-FED INDUCTION GENERATOR FOR WIND ENERGY CONVERSION SYSTEM 风电转换系统双馈感应发电机的鲁棒二阶滑模控制
Acta Electrotechnica et Informatica Pub Date : 2020-09-28 DOI: 10.15546/aeei-2020-0017
Y. Djeriri
{"title":"ROBUST SECOND ORDER SLIDING MODE CONTROL OF DOUBLY-FED INDUCTION GENERATOR FOR WIND ENERGY CONVERSION SYSTEM","authors":"Y. Djeriri","doi":"10.15546/aeei-2020-0017","DOIUrl":"https://doi.org/10.15546/aeei-2020-0017","url":null,"abstract":"This paper presents a robust nonlinear control strategy based on second-order continuous sliding mode control called Super-Twisting Sliding Mode Control (ST-SMC) strategy of a doubly-fed induction generator (DFIG) integrated into a Wind Energy Conversion System (WECS). The Conventional Sliding Mode Control (C-SMC) strategy has a significant drawback, which is the chattering phenomenon, caused by the discontinuous control signal. The proposed ST-SMC technique based on second-order continuous sliding mode control reduces powers, currents, and torque ripples, while maintaining the advantages of the conventional method (C-SMC) such as the robustness against parametric variations of the DFIG. Simulation results show the effectiveness of the proposed ST-SMC strategy in reducing the chattering effect comparatively to the C-SMC one.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43507737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
BUILDING, VISUALIZING AND EXECUTING DEEP LEARNING MODELS AS DATAFLOW GRAPHS 以数据流图的形式构建、可视化和执行深度学习模型
Acta Electrotechnica et Informatica Pub Date : 2020-06-30 DOI: 10.15546/aeei-2020-0010
Gábor Kruppai, P. Lehotay-Kéry, A. Kiss
{"title":"BUILDING, VISUALIZING AND EXECUTING DEEP LEARNING MODELS AS DATAFLOW GRAPHS","authors":"Gábor Kruppai, P. Lehotay-Kéry, A. Kiss","doi":"10.15546/aeei-2020-0010","DOIUrl":"https://doi.org/10.15546/aeei-2020-0010","url":null,"abstract":"In recent years many frameworks have appeared, which enable users to easily build, visualize and execute deep learning networks on graphical interfaces. However, they do not always provide enough opporunities to automate this process. Generally, data processing programs can be organized into dataflow graphs that define the operations to be performed sequentially on the data. The operation of deep learning neural networks can also be interpreted in a similar way, in which the input data to be processed is a specific data set and the operations to be performed on the data are the layers of the net. Due to architectural reasons, the entire deep learning neural network graph must be built before actual running, thus it is necessary to change topological execution of dataflows to evaluation preceding graph building since knowing the layers separately is not enough to operate the nets. As a solution for displaying editable program graphs, we created a framework in which data processing related to Python packages can be described and the programs built from them can be visualized and executed (mostly) automatically.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47200050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TOWARDS ON EXPERIMENTAL COMPARISON OF THE M-TREE INDEX STRUCTURE WITH BK-TREE AND VP-TREE m树索引结构与bk树和vp树的实验比较
Acta Electrotechnica et Informatica Pub Date : 2020-06-30 DOI: 10.15546/aeei-2020-0009
G. Gombos, J. Szalai-Gindl, István Donkó, A. Kiss
{"title":"TOWARDS ON EXPERIMENTAL COMPARISON OF THE M-TREE INDEX STRUCTURE WITH BK-TREE AND VP-TREE","authors":"G. Gombos, J. Szalai-Gindl, István Donkó, A. Kiss","doi":"10.15546/aeei-2020-0009","DOIUrl":"https://doi.org/10.15546/aeei-2020-0009","url":null,"abstract":"In our previous paper, we showed the M-tree index [7] using GiST in the PostgreSQL database. In this paper, we present that result and we extend that with some preliminary experimental results with other indexes. We compare the M-tree index with the BK-tree and the VP-tree indexes. These can be work in metric space with edit distance, that can be used to compare DNA sequences or melody of songs. In this paper, we compare the indexes in PostgreSQL. We use the range based queries to analyze the performance of the indexes. The result shows that the M-tree index is faster than the other two indexes.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45351711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
GESTURE INTERACTION IN THE LIRKIS CAVE BASED ON EMG AND KINECT SENSOR 基于emg和kinect传感器的利克斯洞穴手势交互
Acta Electrotechnica et Informatica Pub Date : 2020-01-13 DOI: 10.15546/aeei-2019-0024
P. Pastornicky, M. Chovanec
{"title":"GESTURE INTERACTION IN THE LIRKIS CAVE BASED ON EMG AND KINECT SENSOR","authors":"P. Pastornicky, M. Chovanec","doi":"10.15546/aeei-2019-0024","DOIUrl":"https://doi.org/10.15546/aeei-2019-0024","url":null,"abstract":"The article deals with the possibilities of interaction in the virtual environment (VE) of the CAVE LIRKIS system. Commonly available peripherals are keyboard, mouse or gamepad. However, these do not provide a sufficient level of immersion, such as hand gestures. The MYO armband has proven to be one of the potential devices for improving interaction. Therefore, a system for editing an object transformation in VE was created using hand gestures and movements. Enhancing the natural user interface (NUI) of the system with additional interaction capabilities has proven the device to be suitable also for further development.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41666808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
INTERNET OF THINGS UNIFIED PROTOCOL STACK 物联网统一协议栈
Acta Electrotechnica et Informatica Pub Date : 2019-06-30 DOI: 10.15546/AEEI-2019-0011
J. Mocnej, A. Pekár, Winston K.G. Seah, E. Kajati, I. Zolotová
{"title":"INTERNET OF THINGS UNIFIED PROTOCOL STACK","authors":"J. Mocnej, A. Pekár, Winston K.G. Seah, E. Kajati, I. Zolotová","doi":"10.15546/AEEI-2019-0011","DOIUrl":"https://doi.org/10.15546/AEEI-2019-0011","url":null,"abstract":"The Internet of Things (IoT) is a paradigm aimed at connecting everyday objects to the Internet. Given the character of IoT devices, the most popular way of connecting them is using wireless technologies. However, unlike traditional (legacy) networks, the IoT has unique traffic characteristics with specific demands on the used communication protocols. Together with the constrained nature of IoT devices and the diversity in IoT application domains, there is no one network technology that meets all requirements. IoT solutions are based on a variety of protocols that yield concerns about interoperability and mutual compatibility. This article provides a high-level overview of the most popular IoT network technologies and compares them in one unified protocol stack consisting of five layers. The proposed protocol stack is intended to highlight the similarities and differences among IoT network technologies and to provide their compatibility possibilities at different layers.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48089444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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