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Aproximadamente 494 registro(s) hasta el momento: (journal)

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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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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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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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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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Complex Model of Induction Heating - Demounting of Shaft Flange
Vlk, Rostislav - Krasl, Milan

Formato:	,
Enlaces:	This paper deals with exemplary solutions of one specifies problem of induction heating. This problem was partly determined by means of numerical method as a light-coupling problem. Numerical solutions were calculated with the help of professional programs (Ansys, Fluent, QuickField).…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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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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10.

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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11.

, 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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12.

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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13.

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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14.

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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15.

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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16.

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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17.

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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18.

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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19.

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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20.

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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21.

Future High Volume Applications of SAW Device
Nevesely, Miloslav

Formato:	,
Enlaces:	This paper examines the prospects for continuing market growth during the next 15 years by surveying both RF communications technology for systems which use or will use SAW devices. It is predicted that the SAW wireless label will be the…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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22.

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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23.

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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24.

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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25.

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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26.

Mechatronical Aided Concept (MAC) in Intelligent Transport Vehicles Design
Pavlasek, Pavel

Formato:	,
Enlaces:	This article deals with the principles of synergy effect of mechatronical aided concept (MAC) to the design of intelligent transport vehicles products applying CA technologies and virtual reality design methods. Also includes presentation of intelligent railway vehicle development.
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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27.

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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28.

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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29.

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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30.

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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31.

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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32.

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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33.

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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34.

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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35.

Ansys Analysis of Weakly Magnetic Materials in MR Tomography
Steinbauer, Miroslav - Bartusek, Karel

Formato:	,
Enlaces:	The paper deals with the impact of weakly magnetic materials on magnetic field in MR tomography. The resultsobtained by finite element method modelling as well as data measured by MR tomography are introduced. Method ofmagnetic susceptibility determination using MRI is…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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36.

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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37.

Stimulated Emission from InAs (GaAs) Monolayers Stacks Embedded in Al0.33Ga0.67As Ective Region
Pudis, Dusan - Kovac, Jaroslav - Kovac, Jaroslav - Jakabovic, Jan - Vincze, Andrej - Gottschalch, Sieler - Benndorf, Gabriele - Rheinländer, Bernd - Schwabe, Reinhard

Formato:	,
Enlaces:	Our study is focused on the optical and electronic properties of InAs (GaAs) monolayers embedded in Al0.33GA0.67As barrier layers investigated by temperature dependencies of electroluminescence spectra. The experimental results obtained from low temperature electroluminescence measurements of InAs (GaAs)/Al0.33GA0.67As revealed the…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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38.

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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39.

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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40.

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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41.

Usign Planar Transformers in Soft Switching DC/DC Power Converters
Spanik, Pavol; University of Zilina - Feno, Ivan - Kacor, Gabriel

Formato:	,
Enlaces:	In recent years, the demand for wide applications of highly regulated, reliable power supplies, and the desire to have smaller size, lighter weight and higher efficiency of power electronics systems has been increased. The tallest and heaviest components on printed-circuit-boards…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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42.

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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43.

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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44.

Influence of Electromagnetic Field Radiated by Modile Phones on human Organism, Influence of Electromagnetic Field Radiated by Modile Phones on human Organism
Darmova, Vilibalda - Rycekova, Helena

Formato:	,
Enlaces:	Interaction of electromagnetic field with biological objects, especially with human body is a frequently asked question ofthese days. To investigate the electromagnetic fields both theoretical and experimental methods have been used. Mobile phones andtheir base stations belong to the most…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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45.

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

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46.

Computer-Aided Diagnostics of Human Arterial System
Capova, Klara; University of Zilina - Cap, Ivo - Blazek, Vladimir - Buckuliakova, Lydia

Formato:	,
Enlaces:	The paper deals with the modelling and the simulation of physiological fluid systems laying emphasise on the human vascular system. The presented simulation method has been developed as a helpful tool for the computer-aided non-invasive diagnostics of living bodies. Using…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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47.

Expertise and Designing Activities in Electrotechnical Equipment
Kucera, Stanislav - Chlupac, Milan - Kucera, Matej

Formato:	,
Enlaces:	The article informs about the present state and system of solution by the use of research development and projectactivity of KATAE at the Faculty of Electrical Engineering at the University of Zilina. Based on the information pertaining to the professional…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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48.

Preliminary Experimental Results for Indirect Vector-Control of Induction Motor Drives with Forced Dynamics
Vittek, Jan; Technical University of Zilina - Michalik, Jan; Technical University of Zilina - Dodds, Stephen J.; University of East London - Perryman, Roy; University of East London

Formato:	,
Enlaces:	The contribution presents an extension of indirect vector control of electric drives employing induction motors to 'Forced Dynamic Control'. This method of control offers an accurate realisation of dynamic response profiles, which can be selected by the user. The developed…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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49.

Ecologically Optimal Solution of Power Semiconductors Converters
Spanik, Pavol; University of Zilina - Feno, Ivan - Kacsor, Gabriel - Lokseninec, Ivan

Formato:	,
Enlaces:	One of the relevant scientific programs of Department of Power Electrical Systems is research of ecologically optimal topologies main circuits of power converters. This paper presents some methods how to reduce unfavourable influences of power converters on the grid. The…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering

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50.

Advaced Spatio-Temporal Thermal Analysis of Electronic Systems
Hrianka, Miroslav - Tarovsky, Lubomir

Formato:	,
Enlaces:	The article gives a brief review the of diagnostics and analysis possibilities by a spatio-temporal approach into electronic system in infrared bandwidth. The two dimensional image grabbed by the thermo vision camera provides information about the surface temperature distribution of…
Fecha:	2011-06-29
Recurso:	Advances in Electrical and Electronic Engineering