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Acta Electrotechnica et Informatica最新文献

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EXPERIMENTAL COMPARISON OF MATRIX ALGORITHMS FOR DATAFLOW COMPUTER ARCHITECTURE 数据流计算机体系结构中矩阵算法的实验比较
Acta Electrotechnica et Informatica Pub Date : 2018-09-27 DOI: 10.15546/AEEI-2018-0025
J. Mihelic, U. Cibej
{"title":"EXPERIMENTAL COMPARISON OF MATRIX ALGORITHMS FOR DATAFLOW COMPUTER ARCHITECTURE","authors":"J. Mihelic, U. Cibej","doi":"10.15546/AEEI-2018-0025","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0025","url":null,"abstract":"In this paper we draw our attention to several algorithms for the dataflow computer paradigm, where the dataflow computation is used to augment the classical control-flow computation and, hence, strives to obtain an accelerated algorithm. Our main goal is to experimentally explore various dataflow techniques and features, which enable such an acceleration. Our focus is to resolve one of the most important challenges when designing a dataflow algorithm, which is to determine the best possible data choreography in the given context. In order to mitigate this challenge, we systematically enumerate and present possible techniques of various data choreographies. In particular, we focus our interest on the algorithms that use matrices and vectors as the underlaying data structure. We begin with simple algorithms such as matrix and vector multiplication, evaluation of polynomials as well as more advanced ones such as the simplex algorithm for solving linear programs. To evaluate the algorithms we compare their running-times as well as the dataflow resource consumption.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42068352","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: 2
MODEL FOR GENERATING SIMPLE SYNTHETIC ECG SIGNALS 生成简单合成心电信号的模型
Acta Electrotechnica et Informatica Pub Date : 2018-09-27 DOI: 10.15546/AEEI-2018-0019
P. Dolinský, I. András, L. Michaeli, D. Grimaldi
{"title":"MODEL FOR GENERATING SIMPLE SYNTHETIC ECG SIGNALS","authors":"P. Dolinský, I. András, L. Michaeli, D. Grimaldi","doi":"10.15546/AEEI-2018-0019","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0019","url":null,"abstract":"This paper proposes a mathematical model for generating synthetic artificial ECG signal based on geometrical features of a real ECG signal. By variation of its parameters each particular wave of PQRST complex can be adjusted as needed allowing the generation of arbitrary ECG patterns typical for diseases and arrhythmia. The input parameters are treated to avoid mixing order of PQRST waves in case of automatic parameter variation and allow generating different patterns for each subsequent heartbeat independently. Each particular wave is modelled using an elementary trigonometric function or a Gaussian monopulse. Including possible addition of equipment noise as well as respiration frequency such an artificial signal can be used as a test signal for some signal processing methods. The model was tested by comparison of synthetized patterns against patterns generated by LabVIEW Biomedical Toolkit, while the parameters of model are found using the differential evolution algorithm.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44898876","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: 9
SURVEY OF CONTROL METHODS FOR DC-DC CONVERTERS dc-dc变换器控制方法综述
Acta Electrotechnica et Informatica Pub Date : 2018-09-27 DOI: 10.15546/AEEI-2018-0024
Martin Lešo, J. Zilková, M. Biros, Peter Talian
{"title":"SURVEY OF CONTROL METHODS FOR DC-DC CONVERTERS","authors":"Martin Lešo, J. Zilková, M. Biros, Peter Talian","doi":"10.15546/AEEI-2018-0024","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0024","url":null,"abstract":"The paper presents a survey of the currently used control methods for DC-DC converters and the current state of research in this area. Determining the ideal method for output voltage control in DC-DC converters is a demanding task due to their nonlinear character, various types of connection, and ways of use. The currently prevailing control methods implemented in DC-DC converters are voltage-mode, current-mode and hysteretic control. Each of these methods comes with certain drawbacks, which is why there is intensive research going on aimed at more progressive DC-DC converter control methods that would replace or supplement the currently used types of control in order to increase the reliability and quality of DC-DC converters output voltage control. The paper includes a basic description of each of the control methods with focus on the principles of their function and on the main pluses and minuses of each method.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45393233","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: 13
ON AUTOMATIC IDENTIFICATION OF MONITORING CONCERNS IMPLEMENTATION 关于自动识别监视关注点的实现
Acta Electrotechnica et Informatica Pub Date : 2018-09-27 DOI: 10.15546/AEEI-2018-0020
G. Cojocar, A. Guran
{"title":"ON AUTOMATIC IDENTIFICATION OF MONITORING CONCERNS IMPLEMENTATION","authors":"G. Cojocar, A. Guran","doi":"10.15546/AEEI-2018-0020","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0020","url":null,"abstract":"Automatic identification of crosscutting concerns implementation is still a challenging task in software engineering. The approaches proposed so far for crosscutting concerns identification are all bottom-up approaches: starting from the source code of a software system they try to discover all the crosscutting concerns that exist in the system. In this paper we present a top-down approach that we developed based on the observations gathered after analyzing how monitoring crosscutting concerns are implemented in different open source object oriented software systems. The approach aims to identify only one type of crosscutting concern, namely monitoring. It tries to automatically identify the type of the logger used for monitoring crosscutting concerns implementation by analyzing the attributes defined in Java-based software systems. We also present and discuss the results obtained by applying this approach to different open source Java software systems.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47805089","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
TOWARDS A HIGH-LEVEL C++ ABSTRACTION TO UTILIZE THE READ-COPY-UPDATE PATTERN 使用READ-COPY-UPDATE模式的高级C++抽象
Acta Electrotechnica et Informatica Pub Date : 2018-09-27 DOI: 10.15546/aeei-2018-0021
G. Márton, Faculty Informatics Eotv ¨ os Lor ¨ Compilers, Imre Szekeres, Z. Porkoláb, Hungary Economics
{"title":"TOWARDS A HIGH-LEVEL C++ ABSTRACTION TO UTILIZE THE READ-COPY-UPDATE PATTERN","authors":"G. Márton, Faculty Informatics Eotv ¨ os Lor ¨ Compilers, Imre Szekeres, Z. Porkoláb, Hungary Economics","doi":"10.15546/aeei-2018-0021","DOIUrl":"https://doi.org/10.15546/aeei-2018-0021","url":null,"abstract":"Concurrent programming with classical mutex/lock techniques does not scale well when reads are way more frequent than writes. Such situation happens in operating system kernels among other performance critical multithreaded applications. Read copy update (RCU) is a well know technique for solving the problem. RCU guarantees minimal overhead for read operations and allows them to occur concurrently with write operations. RCU is a favourite concurrent pattern in low level, performance critical applications, like the Linux kernel. Currently there is no high-level abstraction for RCU for the C++ programming language. In this paper, we present our C++ RCU class library to support efficient concurrent programming for the read-copy-update pattern. The library has been carefully designed to optimise performance in a heavily multithreaded environment, in the same time providing high-level abstractions, like smart pointers and other C++11/14/17 features.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48541201","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: 3
TRAFFIC SCENARIOS AND VISION USE CASES FOR THE VISUALLY IMPAIRED 针对视障人士的交通场景和视觉用例
Acta Electrotechnica et Informatica Pub Date : 2018-09-27 DOI: 10.15546/aeei-2018-0022
Judith Jakob, J. Tick, B. B
{"title":"TRAFFIC SCENARIOS AND VISION USE CASES FOR THE VISUALLY IMPAIRED","authors":"Judith Jakob, J. Tick, B. B","doi":"10.15546/aeei-2018-0022","DOIUrl":"https://doi.org/10.15546/aeei-2018-0022","url":null,"abstract":"We gather the requirements visually impaired road users have concerning a camera-based assistive system in order to develop a concept for transferring algorithms from Advanced Driver Assistance Systems (ADAS) to this domain. We therefore combine procedures from software engineering, especially requirements engineering, with methods from qualitative social sciences, namely expert interviews by means of problem-centered interview methodology. The evaluation of the interviews results in a total of six traffic scenarios, that are of interest for the assistance of visually impaired road users, clustered into three categories: orientation, pedestrian and public transport scenarios. From each scenario, we derive use cases based on computer vision and state which of them are also addressed in ADAS so that we can examine them further in the future to formulate the transfer concept. We present a general literature review concerning solutions from ADAS for the identified overlapping use cases from both fields and take a closer look on how to adapt ADAS Lane Detection algorithms to the assistance of the visually impaired.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44307967","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: 10
UTILIZING PROCESSED RECORDS OF PATIENT´S SPEECH IN DETERMINING THE STAGE OF PARKINSON´S DISEASE 利用患者语音处理记录确定帕金森病的分期
Acta Electrotechnica et Informatica Pub Date : 2018-09-27 DOI: 10.15546/AEEI-2018-0023
M. Vadovský, Ján Paralič
{"title":"UTILIZING PROCESSED RECORDS OF PATIENT´S SPEECH IN DETERMINING THE STAGE OF PARKINSON´S DISEASE","authors":"M. Vadovský, Ján Paralič","doi":"10.15546/AEEI-2018-0023","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0023","url":null,"abstract":"The medical procedures for disease diagnostics are significantly demanding and time-consuming. Data mining methods can accelerate this process and assist doctors in making decisions in complex situations. In case of Parkinson ́s disease (PD), the diagnostics of the initial disease stage is the primary issue since the symptoms are not so unambiguous and easily observable. Therefore, this article is focused on determining the actual stage of PD based on the data recording signals of patient ́s speech using decision trees (C4.5, C5.0 and CART). Methods such as RandomForest, Bagging and Boosting were also employed to improve the existing classification models. Estimation of model accuracy was achieved by using k-fold cross-validation and validation with omission of one record (Leave-one-out). In addition, experiments were also performed to remove collinearity in data by computing the Variance inflation factor (VIF) in order to increase the accuracy of the models.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45907663","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
LEAN FORMALIZATION OF INSERTION SORT STABILITY AND CORRECTNESS 插入排序稳定性和正确性的精简形式化
Acta Electrotechnica et Informatica Pub Date : 2018-06-01 DOI: 10.15546/AEEI-2018-0015
František Silváši, M. Tomásek
{"title":"LEAN FORMALIZATION OF INSERTION SORT STABILITY AND CORRECTNESS","authors":"František Silváši, M. Tomásek","doi":"10.15546/AEEI-2018-0015","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0015","url":null,"abstract":"","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42994222","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: 2
FIVE-LEVEL DTC WITH 12 SECTORS OF INDUCTION MOTOR DRIVE USING NEURAL NETWORKS CONTROLLER FOR LOW TORQUE RIPPLE 基于神经网络的12扇区五电平DTC低转矩脉动控制
Acta Electrotechnica et Informatica Pub Date : 2018-06-01 DOI: 10.15546/AEEI-2018-0018
H. Benbouhenni, Algeria Ecole Nationale Polytechnique d’Oran
{"title":"FIVE-LEVEL DTC WITH 12 SECTORS OF INDUCTION MOTOR DRIVE USING NEURAL NETWORKS CONTROLLER FOR LOW TORQUE RIPPLE","authors":"H. Benbouhenni, Algeria Ecole Nationale Polytechnique d’Oran","doi":"10.15546/AEEI-2018-0018","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0018","url":null,"abstract":"This paper presents an improved five-level DTC with 12 sectors of induction motor based on artificial neural networks controller. This neural controller was used to replace on the conventional comparator hysteresis of torque in order to reduce torque ripple, flux and stator current. The validity of the proposed control scheme is verified by simulation tests of an induction motor drive system. The stator current and stator flux, torque is determined and compared to the above techniques using Matlab/Simulink environment.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48897746","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: 11
M-SEQUENCE GROUND-PENETRATING RADAR WITH NOVEL FRONT-END CONCEPT 具有新颖前端概念的M序列接地穿透雷达
Acta Electrotechnica et Informatica Pub Date : 2018-06-01 DOI: 10.15546/AEEI-2018-0011
M. Pecovský, P. Galajda, S. Slovák, M. Sokol, M. Kmec
{"title":"M-SEQUENCE GROUND-PENETRATING RADAR WITH NOVEL FRONT-END CONCEPT","authors":"M. Pecovský, P. Galajda, S. Slovák, M. Sokol, M. Kmec","doi":"10.15546/AEEI-2018-0011","DOIUrl":"https://doi.org/10.15546/AEEI-2018-0011","url":null,"abstract":"This article deals with the ultra-wideband (UWB) front-end circuits for the ground penetrating radars (GPRs). New concepts for the GPR front-end circuits are proposed, which exploit electrically short active antennas to achieve minimal dimensions and the wide frequency band of the radar system as well as offer enhanced user experience in comparison to the currently used conventional GPR systems. This work suggests using the M-sequence radar as the core for the proposed GPR and sums up the specific issues, which have to be taken into account when designing the device transmitting radio waves through the inhomogeneous high-attenuation environment, typical for the GPR. Additionally, an overview of commercially available GPR antennas in the frequency band below 300 MHz is introduced for the comparison with the proposed solution. The theoretical working principles are discussed and confirmed by the measurements to pave the way for the future research.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47037096","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: 3
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