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Advances in Electrical and Electronic Engineering (89)

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2011 (89)
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Aproximadamente 89 registro(s) hasta el momento: (journal)

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Recurso libre

Surface Effect on Three Phase Lines of Low-Ohmic Furnaces
Novak, Pavel

Formato:	,
Enlaces:	The article another option of using numerical method of elementary conductors in surface effect three-phase supply linesfor low-ohmic furnaces. Impedance asymmetry of three-phase supply lines of different conductor profiles and various spaceconfigurations is analysed following to the author`s article published…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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Science is a Part of the Culture
Turek, Ivan

Formato:	,
Enlaces:	The contribution points on relation between sciences and various aspects of the life of a society. The relation of physics and mathematics with technical disciplines is stressed. It is accented that technical education should be based on a mathematical and…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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Note on the Methodology of Measuring the Attenuation of Acustic Waves in Solid State
Sidor, Peter - Vajda, Drahoslav

Formato:	,
Enlaces:	The presented paper is a note on the methodology of measuring the attenuation of ultrasonic waves in the case of observation device not facilitating a direct measurement of the attenuation based on the definition of the ratio of amplitudes. Instead…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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Intermodal Interference as a Source of Information on Optical Fibres
Kacik, Daniel - Turek, Ivan - Martinecek, Ivan - Grendár, Drahomír

Formato:	,
Enlaces:	A basic description of intermodal interference which follows possibility investigation of intermodal interference in spectral and space region. There is also a brief description of equipments used for such investigation and some illustrations of obtained results. There is pointed in the…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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Location in Mobile Networks Using Database Correlation (DCM)
Mada, Michal - Duha, Jan

Formato:	,
Enlaces:	The article presents one of the methods of location (DCM), which is suitable for using in urban environments, where other methods are less accurate. The principle of this method is in comparison of measured samples of signal with samples stored…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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Operation States Analysis of the Series-Parallel resonant Converter Working Above Resonance Frequency
Dzurko, Peter - Durdik, Jaroslav

Formato:	,
Enlaces:	Operation states analysis of a series-parallel converter working above resonance frequency is described in the paper. Principal equations are derived for individual operation states. On the basis of them the diagrams are made out. The diagrams give the complex image…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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The Development of Breakdown in Transformer Oil
Kudelcik, Jozef; Žilinská univerzita v Žiline

Formato:	,
Enlaces:	The conditions under which breakdown of composite liquid - solid insulation can be occurred, e.g. in transformer, play an important role in designing of such insulation. The initial state of breakdown development is explained based on development of streamers in…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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Properties Verification of MMPP and IPP ATM Cell Sources
Zabka, Jan

Formato:	,
Enlaces:	The paper is aimed to using aided software tool designed by .NET Framework. By means this one is possible to gain statistical file for next processing by software tool STATISTICA. Graphical results ilustrate the influence of cell flow source and…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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A Parallel Approach to Fractal Image Compression,
Dedera, Lubomir

Formato:	,
Enlaces:	The paper deals with a parallel approach to coding and decoding algorithms in fractal image compressionand presents experimental results comparing sequential and parallel algorithms from the point of view of achieved bothcoding and decoding time and effectiveness of parallelization.,
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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10.

Operation Analysis of the Series-Parallel Resonant Converter Working above Resonance Frequency
Dzurko, Peter - Dudrik, Jaroslav

Formato:	,
Enlaces:	The present article deals with theoretical analysis of operation of a series-parallel converter working above resonance frequency. Derived are principal equations for individual operation intervals. Based on these made out are waveforms of individual quantities during both the inverter operation…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

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11.

Quantum Structures and Category Theory
Fric, Roman

Formato:	,
Enlaces:	The methods and constructions of category theory are suitable tools for studying quantum structures and generalized probability. The aim of the present paper is to support our claim via several examples and to motivate further research in this area.
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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12.

Graphical Reprezentation of Atomic D-posets
Chovanec, Ferdinand - Drobna, Eva

Formato:	,
Enlaces:	In the present paper is shown a construction of D-posets using of the method of the MV-algebra pasting and their graphical representation by Haase and Greechie diagrams.
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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13.

Investigation of Solar and Solar-Gas Thermal Energy Sources
Herec, Ivan - Zupa, Jan

Formato:	,
Enlaces:	The article deals with the investigation of solar thermal sources of electrical and heat energy as well as the investigation of hybrid solar-gas thermal sources of electrical and heat energy (so called photothermal sources). Photothermal sources presented here utilize computer-controlled…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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14.

Management of Voltage Quality in Slovak Power System
Altus, Juraj; University of Zilina - Rapsik, Miroslav

Formato:	,
Enlaces:	The reqested voltage value is one of the main indicators of the delivered electric energy quality. The energy transfer system has to secure the good-quality electric energy deliveri for all consumers in the time when the electric energy market is…
Fecha:	2011-06-28
Recurso:	Advances in Electrical and Electronic Engineering

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15.

The Scanning of Power Deformation of Tyre Surface by Tactile Piesoresistive sensors
Hurta, Ferdinand

Formato:	,
Enlaces:	Our work describes a static non-destructive method of measuring the contact pressures of tyres. The distribution of contact pressures during the contact of the tyre with a solid base represents one of the indicators we use. In this process, it…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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16.

, Control of Dynamics Systems Based on Q-learning
Filasova, Anna - Klacik, Juraj - Kasprisin, Jan

Formato:	,
Enlaces:	, The purpose of the paper is to present an algorithm for solving nonlinear systems control problem based on Q-learning,which is a model-free approach belonging to the adaptive critic family of designs and its advantage over other algorithms of thisfamily…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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17.

Transition States of Telecommunication Network
Sulovec, Andrej - Cepciansky, Gustav

Formato:	,
Enlaces:	The dimensioning and performance of the telecommunication network take place according to the theory of teletrafficalways taking into account the stable state. But the utterance of the network being in an unstable state is less known. In this paper, wewould…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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18.

Technology of Electronic Signatur
Schwartz, Ladislav - Trstensky, Dusan - Sadovsky, Jaroslav

Formato:	,
Enlaces:	An electronic signature uses a hash of message and an asymetrical algorithm of encryption for its generation. During verification of message on receiver side the hash of original message must be identical with the hash of received message. Electronic message…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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19.

Acoustoelectronics Devices with Surface Acoustic Waves
Nevesely, Miloslav

Formato:	,
Enlaces:	The principle of acoustoelectronic devices using surface acoustic waves (SAV) is as well as fabricated devices and their technical parameters described.
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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20.

Thermovision Diagnostic, Thermovision Diagnostic
Simko, Milan - Sebok, Milan - Chlupac, Milan

Formato:	,
Enlaces:	Paper deals with the problem of thermovission diagnostics and its application in some branches of industry., Paper deals with the problem of thermovission diagnostics and its application in some branches of industry.
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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21.

High Power Zero-Voltage and Zero-Current Switching DC-DC Converters
Dudrik, Jaroslav; Technická univerzita v Košiciach

Formato:	,
Enlaces:	The paper presents principles and properties of the soft switching PWM DC-DC converters. The attention is focused mainly on high power applications and thus the full-bridge inverters are used in DC-DC converters. Considerations are also given to the control methods…
Fecha:	2011-06-28
Recurso:	Advances in Electrical and Electronic Engineering

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22.

Modern Trends in Circuit Systems
Ticha, Dasa

Formato:	,
Enlaces:	Paper presents a overview of research in the field of interactive CCTV networks made at the Department of Telecommunication of the Faculty of Electrical Engineering of the University of Zilina. Some results, concerning theoretical and practical aspects of network planning…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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23.

Complex Power Quality Evaluation of Electrical Energy in Electric Networks
Altus, Juraj; University of Zilina - Novak, Milan - Otcenasova, Alena - Pokorny, Michal

Formato:	,
Enlaces:	Power quality evaluation is in the scope of research activities carried out by the members of Department of Power Electrical Systems (KVES) for many years. Results presented in the paper are the outcomes of number of accomplished measurements and analyses.…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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24.

Prediction of the Stochastic System Properties Using Genetic Identification
Kuliha, Rastislav; Žilinská univerzita - Spalek, Juraj; Žilinská univerzita

Formato:	,
Enlaces:	The article deals with the equation solutions for conditional probabilities determination. The number of variables in equation for correlation estimation could be reduced under the specific conditions. Stochastic system could be approximated by the mean values of the conditional probabilities…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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25.

The New Implementation Possibilities for Electronic Logical Devices
Cuntala, Jozef - Sindler, Peter - Kondelova, Anna

Formato:	,
Enlaces:	This article deals with various technological approaches to realization of electronic logical devices. The accent is given on new possibilities of logic system implementation into single chip microelectronic devices designed on programmable and configurable basis.
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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26.

Numerical Methods
Maga, Dusan

Formato:	,
Enlaces:	Presented paper is based on authors experience on numerical methods of field solution, mostly magnetic. This paper, as the first one of prepared series, deals with mathematical apparatus and basic physical principles, as well as with possible short-comings or advantages…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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27.

Biological Effects of Electromagnetic Field
Cabanova, Zuzana

Formato:	,
Enlaces:	Biological effects of electromagnetic field (EMF) are still under discussion. Some effects (negative and positive too) are not exactly clear. This paper is talking about possible biological effects and influences of EMF. One area of EMF applications is medicine and…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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28.

Multimedial CD for an Education in Optical Communications,
Psanecky, Roman - Stanik, Miroslav

Formato:	,
Enlaces:	This article deals with an e-learning in optical communications. Ways of e-learning include learning by education software, multimedial CD and Internet on the www address http://fel.utc.sk/~psanecky/.An aim of multimedial CD development was to develop an didactic tools for the course…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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29.

Dynamic Model of Two-Phase Permanent Magnet Synchronous Motor
Zaskalicky, Pavel - Zaskalicka, Maria

Formato:	,
Enlaces:	The paper deals with a new type of an electronically commuted two-phase salient pole permanent magnet synchronous motor for an industrial and household appliances. The motor is fed from a single voltage-source inverter with 2 phase rectangular output voltage. The…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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30.

Connection between Transmission Quality Parametrs
Sulovec, Andrej

Formato:	,
Enlaces:	Errors occuring in digital transmission are the major source of degradation in that they affect voice services in terms of distortion of voice, and data type services in terms of lost or inaccurate information or reduces throughput. Therefore International Telecommunication…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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31.

Optimalization of IGBT Communication
Spanik, Pavol; University of Zilina - Feno, Ivan - Ovcarcik, Radovan

Formato:	,
Enlaces:	The paper presents IGBT switch off process in order to reduce power loss in the structure. The soft switching method using switch-off after current reduction is used. Process mentioned above is optimized to minimize the power loss that is determined…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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32.

Economical Evaluation of GSM Gate Installation in ZU Private Telecom Network
Vaculik, Martin; University of Zilina - Jendrekova, Martina

Formato:	,
Enlaces:	This article deals with economical evaluation of GSM Gate, installed in Private telecom Network of University of Žilina. In present time, there is only one Gate installed in the Campus network Veľký diel. From the comparison of revenues can be…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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33.

Analysis of the Influence of Commutation of Unidirectional Electric Machines on Telecommunication Devices
Poliak, Jan

Formato:	,
Enlaces:	Present time situation in the field of disturbing telecommunication devices is described in the preliminary chapters. The focus of the article is the description and results of the measurement of commutation demonstration on telecommunication devices with both measuring the emissions…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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34.

Information Approach to Safety Analysis of Signalling Systems
Hanusova, Nadezda - Zahradnik, Jiri

Formato:	,
Enlaces:	The paper describes foundamentals of information approach to safety analysis of signalling systems on a particular example. Bayesian network is applicable apparatus for safety analysis by using information approach. Advantages of using bayesian networks to safety analysis of signalling systems…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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35.

Adaptation Methods in Mobile Communication Networks
Wieser, Vladimir

Formato:	,
Enlaces:	Adaptation methods are the main tool for transmission rate maximization through the mobile channel and today the great attention is directed to them not only in theoretical domain but in standardization process, too. The review of adaptation methods for system…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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36.

Control and Information Systems
Zahradnik, Jiri - Rastocny, Karol - Spalek, Juraj

Formato:	,
Enlaces:	The article deals with main tends of scientific research activities of Department of Control and Information Systems at the Faculty of Electrical Engineering of University of Zilina and its perspectives in this area.
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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37.

Mathematic-Graphical Formalization of Switch Point Control Circuit Function
Zdansky, Juraj - Rastocny, Karol

Formato:	,
Enlaces:	This article describes authors designed method then enables mathematic – graphical formalization of system’s functional specification. The result of this method is algebraic system – finite automata that is written in transition table. This transition table is possible to overwrite…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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38.

Mathematical Modelling of Study
Dedera, Pavel - Tomcikova, Ivana - Miklecova, Tatiana

Formato:	,
Enlaces:	The paper deals with two exact mathematical models of study: A borrowed model with constant intensity of study and amodel with variable intensity of study derived by the authors are presented using data acquired in real pedagogical research. Thebounding of…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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39.

The Wavelength Conversion in WDM Networks
Bahleda, Miroslav - Blunar, Karol

Formato:	,
Enlaces:	In this article we deal with a problem of wavelength conversion in WDM networks and with the wavelength conversion impact on throughput of network. The throughput of networks is determined in terms of blocking probability. The optical networks can be…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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40.

As Estimation of Donor Concetration in LiNbO3:Fe Using the Photorefractive Effect
Tarjanyi, Norbert - Turek, Ivan

Formato:	,
Enlaces:	Results of an experimental investigation of optical field record created by photorefractive effect in iron doped LiNbO3, is presented in the paper. According to time dependences of record amplitude obtained at different intensities of recorded field it was shown that…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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41.

The Reviewing of Distributed Power Sources Impact on Fallout’s Localization in 22 kV Network
Bracinik, Peter - Otcenasova, Alena

Formato:	,
Enlaces:	The aim of this paper is to point out some facts that will occur by fault localization in 22 kV networks after the implementation of distributed power sources, especially wind power plants. This paper describes possible connection of these sources…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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42.

Multiprotocol Label Switching, Multiprotocol Label Switching
Schwartz, Ladislav - Trstensky, Dusan - Cepciansky, Gustav

Formato:	,
Enlaces:	The up to this time known networks with the IP protocol have worked as connection-less and they have not guaranteed the quality of services. Implementing the MPLS protocol, an overlay connection-oriented network with guaranteed quality of services QoS is being…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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43.

New ICT Trends in E-Health
Ciganek, Peter; University of Zilina - Pirnik, Rastislav; University of Zilina - Broncekova, Tatiana; University of Zilina

Formato:	,
Enlaces:	E-Health (electronic healthcare) is one of the priorities of eEurope action plan, which was created by European Union, to make Internet accessible for European Union inhabitants. To enable to use all eHealth possibilities and applications it is necessary to use…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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44.

Generation of the Values of the Polynomial Function, Generation of the Values of the Polynomial Function
Prikopova, Anna - Hargas, Libor - Koniar, Dusan

Formato:	,
Enlaces:	The polynomial functions of the Galois´ finit field make up the base of original access to the solution to area logic control of technological processes with of the exploitation P systems. This article describes SW ways and means for determination…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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45.

Genetic Synthesis of the Diffraction Profile
Jurecka, Stanislav - Havlik, Milan - Jureckova, Maria

Formato:	,
Enlaces:	In this paper we describe theoretical synthesis of the x-ray diffraction line profile as a superposition of the spectral components Ka1 and Ka2 optimized to the experimental data by the genetic algorithm and nonlinear optimization methods 'Nelder-Mead downhill simplex' and…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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46.

Using of Finite Automation at Programming PLC
Rastocny, Karol; University of Zilina - Zdansky, Juraj

Formato:	,
Enlaces:	The paper is concerning with systematic advances at programming programmable logic controllers (PLC), which comes out from algebraic description of behaviour of sequential circuit, in the way of finite automaton. This kind of access is streamlining the work of a…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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47.

New Possibility of Lines Power Flow Control
Altus, Juraj; University of Zilina - Novotny, Marek; University of Zilina - Rapsik, Miroslav

Formato:	,
Enlaces:	Present time is characteristic with increasing requests of consumers on the quality and quantity of delivered energy. In regard to financial and time difficulty of building up new power plants and distribution lines, producers and distributors must find out more…
Fecha:	2011-06-28
Recurso:	Advances in Electrical and Electronic Engineering

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48.

Problems Related to Use of Some Terms in System Reliability Analysis
Hanusova, Nadezda - Zahradnik, Jiri

Formato:	,
Enlaces:	The paper deals with problems of using dependability terms, defined in actual standard STN IEC 50 (191): International electrotechnical dictionary, chap. 191: Dependability and quality of service (1993), in a technical systems dependability analysis. The goal of the paper is…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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49.

Synchronous ATM Multiplexor Propertis Verifications
Zabka, Jan

Formato:	,
Enlaces:	There are a lot of more or less sofisticated simulating tools oriented specifically on performance evaluation ATMnetwork components in practice [1]. Along academic methods simulations on cell level, there is apparent effort to model ATM traffic on higher abstractlevel [2].…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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50.

Diagnostic and Measuring Systems of the Power Transformers
Michalik, Jan - Gutten, Miroslav - Benova, Mariana - Koreciak, Daniel

Formato:	,
Enlaces:	In the article the diagnostic and measuring systems dedicated for complex output tests of power transformers aswell as their diagnostic is dcscribcd. The aim of research in this area was to elaborate the problem of so-called open loop measuring system…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering