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Aproximadamente 522 registro(s) hasta el momento: (journal)

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Recurso libre

An Introduction to Feedforward Control of Electric Drives
Malek, Michal - Makys, Pavol - Stulrajter, Marek

Formato:	,
Enlaces:	The field of electric drives provides a broad spectrum of applications with different power demands, utilized motor types or different environment requirements. Lot of applications are characterized by very high demands on accuracy and dynamic properties and have attribute of…
Fecha:	2010-09-30
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

Design of Fuzzy Based Virtual Actuator for a Class of Nonlinear Systems
Filasova, Anna; Technical University of Kosice - Serbak, Vladimir; Technical University of Kosice

Formato:	,
Enlaces:	The paper presents new conditions suitable in design of a virtual actuator for a class of continuous-time nonlinear systems represented by Takagi-Sugeno models, and measurable premise variables. Simulation results illustrate the design procedure and demonstrate the basic performances of the…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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Fabrication and Properties of Er-Doped Nanocrystalline Phase-Seperated Optical Fibers
Dhar, Anirban; Institute of Photonics & Electronics, ASCR v.v.i, - Kasik, Ivan; Institute of Photonics & Electronics, ASCR v.v.i, - Podrazky, Ondrej; Institute of Photonics & Electronics, ASCR v.v.i, - Matejec, Vlastimil; Institute of Photonics & Electronics, ASCR v.v.i,

Formato:	,
Enlaces:	The fabrication of Er-doped ZrO2-based nanocrystalline phase-separated optical fiber preforms using the MCVD and solution doping techniques is presented and discussed in details in the paper. Preforms with nearly transparent cores containing Er-doped nanocrystals with dimensions mainly within 20-80 nm…
Fecha:	2013-03-30
Recurso:	Advances in Electrical and Electronic Engineering

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Backward Multiscattering and Transport of Photons in Biological Tissue: Experiment and Simulation
Abubaker, Hamed Mohamed; Brno University of Technology - Tomanek, Pavel; Brno University of Technology

Formato:	,
Enlaces:	Optical polarimetry is a mighty tool for study of transparent and translucent inorganic and organic materials. Growing interest in better health and also the quality of the food pointed the investigation of physical properties of biological turbid tissues. Due to…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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AFM Study of Structure Influence on Butterfly Wings Coloration
Dallaeva, Dinara Sultanovna; Brno University of Technology - Tomanek, Pavel; Brno University of Technology

Formato:	,
Enlaces:	This study describes the structural coloration of the butterfly Vanessa Atalanta wings and shows how the atomic force microscopy (AFM) can be applied to the study of wings morphology and wings surface behavior under the temperature. The role of the…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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Ultrasonic Transducer Peak-to-Peak Optical Measurement
Skarvada, Pavel - Tofel, Pavel - Tomanek, Pavel

Formato:	,
Enlaces:	Possible optical setups for measurement of the peak-to-peak value of an ultrasonic transducer are described in this work. The Michelson interferometer with the calibrated nanopositioner in reference path and laser Doppler vibrometer were used for the basic measurement of vibration…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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Dispersion Compensating Photonic Crystal Fiber with Enhanced Properties Achieved by Modified Core Geometry
Kraus, Stanislav; Department of Telecommunications Engineering Faculty of Electrical Engineering Czech Technical University in Prague - Lucki, Michal; Department of Telecommunications Engineering Faculty of Electrical Engineering Czech Technical University in Prague

Formato:	,
Enlaces:	A novel dispersion compensating fiber based on photonic crystal fiber has been designed and studied in terms of optimal dispersion and operating bandwidth. The investigation of dispersion characteristics with respect to change in hole diameter and pitch has been provided.…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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Attacks to Cryptography Protocols of Wireless Industrial Communication Systems
Ondrasina, Tomas - Franekova, Maria

Formato:	,
Enlaces:	The paper deals with problems of safety and security principles within wireless industrial communication systems. First safety requirements to wireless industrial communication system, summarisation of attack methods and the available measures for risks elimination are described with orientation to safety…
Fecha:	2010-09-30
Recurso:	Advances in Electrical and Electronic Engineering

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Power System for Intelligent House
Jahelka, Michal

Formato:	,
Enlaces:	Power supply of intelligent houses or house phones is possible to do with standard transformer with voltage stabilizer or with intelligent power supply. Standard solution can has as a result of failure fuse blown or fire occurrence. Intelligent power supply…
Fecha:	2010-09-30
Recurso:	Advances in Electrical and Electronic Engineering

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10.

Spectral Subtractive Type Speech Enhancement Methods
Verteletskaya, Ekaterina - Simak, Boris

Formato:	,
Enlaces:	In this paper spectral subtractive method and some of its modification are compared. Performance of spectral subtraction, its limitations, artifacts introduced by it, and spectral subtraction modifications for eliminating these artifacts are discussed in the paper in details. The algorithms…
Fecha:	2010-09-30
Recurso:	Advances in Electrical and Electronic Engineering

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11.

The Software Reliability of Large Scale Integration Circuit and Very Large Scale Integration Circuit
Ganiyev, Artem - Vitasek, Jan

Formato:	,
Enlaces:	This article describes evaluation method of faultless function of large scale integration circuits (LSI) and very large scale integration circuits (VLSI). In the article there is a comparative analysis of factors which determine faultless of integrated circuits, analysis of already…
Fecha:	2010-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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12.

Implementation of Different Variants of Table-Based Frequency Synthesizers with Quadrature Output in VHDL
Kekrt, Daniel - Klima, Milos - Podgorny, Radek - Zavrtalek, Jan

Formato:	,
Enlaces:	This article describes the modelling and implementation of two different variants of direct frequency synthesizer, and evaluation of the performance of the finished design, in terms of memory and speed efficiency. The frequency synthesizer requirement comes from our complex radio…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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13.

A Virtual Instrument for DC Power Flow Solution Using LabVIEW Language
Souag, Slimane - Benhamida, Farid; Department of Electrical Engineering University of Djillali Liabes

Formato:	,
Enlaces:	In this paper, we present a method for solving the power flow problem by the method of DC power flow using the graphical programming environment of LabVIEW as a virtual instrument (VI) suitable for contingency analysis. The DC power flow…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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14.

Third Order Low-Pass Filter Using Synthetic Immittance Elements with Current Conveyors
Brandstetter, Pavel - Klein, Lukas

Formato:	,
Enlaces:	The paper deals with a theoretical proposal of the resulting circuit of the frequency filter using synthetic immittance elements of higher order with current conveyors. The text pays particular attention to design process of synthetic immittance elements, explains the principle…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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15.

Second Order Low-Pass and High-Pass Filter Designs Using Method of Synthetic Immitance Elements
Brandstetter, Pavel; VSB-Technical university of Ostrava - Klein, Lukas; VSB-Technical university of Ostrava

Formato:	,
Enlaces:	The paper briefly describes the basics of frequency filter design method using synthetic immittance elements with current conveyors. An introduction of the paper explains the advantages and also disadvantages of using this method. Other chapters briefly introduce a design process…
Fecha:	2013-03-30
Recurso:	Advances in Electrical and Electronic Engineering

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16.

Speed Estimation of Induction Motor Using Model Reference Adaptive System with Kalman Filter
Brandstetter, Pavel; VSB - Technical University of Ostrava Department of Electronics - Dobrovsky, Marek; VSB - Technical University of Ostrava Department of Electronics

Formato:	,
Enlaces:	The paper deals with a speed estimation of the induction motor using observer with Model Reference Adaptive System and Kalman Filter. For simulation, Hardware in Loop Simulation method is used. The first part of the paper includes the mathematical description…
Fecha:	2013-03-30
Recurso:	Advances in Electrical and Electronic Engineering

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17.

The Test of Organic Solvents Vapours Based on Commercial Tin Dioxide Gas Sensors
Gajdosik, Libor; VSB-technical university of Ostrava

Formato:	,
Enlaces:	This article describes the experiments carried out with the system of three tin dioxide gas sensors MQR 1003, TGS 822 and TGS 813, as well as the achieved results. Vapours of five industrial organic solvents were tested. The measurement values…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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18.

Semi-Smooth Newton Method for Solving 2D Contact Problems with Tresca and Coulomb Friction
Motyckova, Kristina; Ph.D. student Department of Applied Mathematics, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava - Kucera, Radek; Associated professor Centre of Excellence IT4I, VSB-Technical University of Ostrava

Formato:	,
Enlaces:	The contribution deals with contact problems for two elastic bodies with friction. After the description of the problem we present its discretization based on linear or bilinear finite elements. The semi--smooth Newton method is used to find the solution, from…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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19.

The Applications for the Calculation and Optimization of Passive Optical Networks Attenuation Characteristics
Lafata, Pavel - Vodrazka, Jiri

Formato:	,
Enlaces:	The passive optical networks represent modern and promising solution to meet the increasing demands on the transmission speed in access networks. These optical networks consist only of passive optical components, essential role play mainly the passive optical splitters. Therefore, it…
Fecha:	2010-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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20.

Comprehensive Study of Solar Cell Structure Defects by Means of Noise and Light Emission Analysis
Macku, Robert - Koktavy, Pavel - Sicner, Jiri

Formato:	,
Enlaces:	This paper discusses the issue of silicon solar cells localized defects from metrological and physical points of view. Structure imperfections represent the real problem because of solar cells long-term degradation and conversion efficiency decreasing. To this aim we pay our…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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21.

Hybrid Microoptical WDM Receiver for PON Communication
Jerabek, Vitezslav; CTU in Prague Faculty of Electrical Engineering - Armas, Julio - Prajzler, Vaclav

Formato:	,
Enlaces:	The paper presents the design, simulation and construction results of the wavelength division multiplex (WDM) optical hybrid receiver module for the passive optical network (PON). The optical WDM receiver was constructed using system of three micromodules in the new circle…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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22.

New Sophisticated Analysis Method of Crystallizer Temperature Profile Utilizing Optical Fiber DTS Based on the Stimulated Raman Scattering
Koudelka, Petr; Assistant Editor-in-Chief, VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Telecommunications - Liner, Andrej; VSB-Technical University of Ostrava - Papes, Martin; VSB-Technical University of Ostrava - Latal, Jan; VSB-Technical University of Ostrava - Vasinek, Vladimir; VSB-Technical University of Ostrava - Hurta, Jan; VSB-Technical University of Ostrava - Vinkler, Tomas; VSB-Technical University of Ostrava - Siska, Petr; VSB-Technical University of Ostrava

Formato:	,
Enlaces:	Continuous casting is a modern and advanced technology of steel production, whose product is a steel blank as a semifinished product for further manufacturing. It is known that better monitoring and process control of casting improves the steel quality and…
Fecha:	2012-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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23.

Advanced Algorithm for Optimizing the Deployment Cost of Passive Optical Networks
Lafata, Pavel; Department of Telecommunication Engineering, Faculty of Electrical Engineering, Czech Technical University in Prague, Czech Republic

Formato:	,
Enlaces:	The deployment of passive optical networks (PONs) is slow today, especially in Europe, because completely new optical infrastructures are necessary to be installed in the last-mile segments of access networks, which is always very expensive process. One of the possibilities…
Fecha:	2013-03-30
Recurso:	Advances in Electrical and Electronic Engineering

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24.

Restoration of Optical Spectrum
Vitasek, Jan; Layout Editor, VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Telecommunications - Latal, Jan; VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Telecommunications - Siska, Petr; VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Telecommunications - Koudelka, Petr; VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Telecommunications - Vasinek, Vladimir; VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Telecommunications

Formato:	,
Enlaces:	This article deals with research of luminous sources which could be applied in indoor Free Space Optic (FSO) networks. Indoor FSO networks have potential to replace standard IEEE 802.11 in the future. Suitable selection and configuration of optical radiation sources…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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25.

Utilization Asterisk for Service Desk
Vychodil, Jiri - Tomala, Karel - Voznak, Miroslav

Formato:	,
Enlaces:	Article discusses our established Service Desk, which was created to help and facilitate the work of a wide sector of users. To reduce costs in small and large institutions rather than traditional PBX solutions, the use Voice over IP (VoIP)…
Fecha:	2010-09-30
Recurso:	Advances in Electrical and Electronic Engineering

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26.

Self Tuning Techniques on PLC Background and Control Systems With Self Tuning Methods Design
Kocian, Jiri - Koziorek, Jiri

Formato:	,
Enlaces:	Advanced Process Control techniques have become standard functions of distributed control systems. Self tuning methods belong to Advanced Process Control (APC) techniques. APC techniques contain software packages for advanced control based on mathematical methods. APC tools are designed to increase…
Fecha:	2010-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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27.

Dynamic Constrained Economic/Emission Dispatch Scheduling Using Neural Network
Benhamida, Farid - Belhachem, Rachid; Department of Electrical Engineering University of Djillali Liabes of Sidi Bel-Abbes

Formato:	,
Enlaces:	In this paper, a Dynamic Economic/Emission Dispatch (DEED) problem is obtained by considering both the economy and emission objectives with required constraints dynamically. This paper presents an optimization algorithm for solving constrained combined economic emission dispatch (EED) problem and DEED,…
Fecha:	2013-03-30
Recurso:	Advances in Electrical and Electronic Engineering

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28.

Comparison between Different Control Strategies of a Z-Source Inverter Based Dynamic Voltage Restorer
Kazemdehdashti, Abolfazl; School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran - Seifi, Ali Reza; School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran - Shabanpoor Haghighi, Amin; School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran

Formato:	,
Enlaces:	In this paper, dynamic voltage restorer (DVR) compensation methods are compared to each other for the load side connected shunt converter topology of z-source inverter based DVR to choose the best method. Four different topologies are recognized for DVR that…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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29.

Investigation of VDSL2 Digital Lines with Bridged Taps and Various Parameters
Lafata, Pavel

Formato:	,
Enlaces:	Modern Very-High Speed Digital Subscriber Lines (VDSL2) can potentially increase the transmission rates in access networks up to tens of Mbps in both directions. However, the real transmission performance of VDSL2 technology is heavily influenced by real conditions of symmetrical…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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30.

Impact of Apparent Reactance Injected by TCSR on Distance Relay in Presence Phase to Earth Fault
Zellagui, Mohamed; Doctor and Researcher at Research Laboratory of Electromagnetic Propulsion and Induction System (LSP-IE), Faculty of Technology, Department of Electrical Engineering, University of Batna - Chaghi, Abdelaziz; Professor at Research Laboratory of Electromagnetic Propulsion and Induction System (LSP-IE), Faculty of Technology, Department of Electrical Engineering, University of Batna

Formato:	,
Enlaces:	This research paper presents the impact study of apparent reactance injected by series Flexible AC Transmission System (FACTS) i.e. Thyristor Controlled Series Reactor (TCSR) on the measured impedance of a 400 kV single electrical transmission line in the presence of…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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31.

Design of Power Converters for Renewable Energy Sources and Electric Vehicles Charging
Tvrdon, Martin; Ph.D. Student, VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Electronics - Chlebis, Petr; Professor, VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Electronics - Hromjak, Michal; Ph.D. Student, VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Electronics

Formato:	,
Enlaces:	This paper describes the design and construction of new series of power converters equipped with liquid cooling system. This power series is created for project ENET – Energy Units for Utilization of non Traditional Energy Sources. First power converter is…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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32.

Using the Antiphase for Elimination the Noise of Electrical Power Equipment
Pokorny, Viktor; Layout editor. Department of Electrical Power Engineering, Faculty of Electrical Engineering and Computer Science, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava - Poruba, Czech Republic - Misak, Stanislav; Layout editor. Department of Electrical Power Engineering, Faculty of Electrical Engineering and Computer Science, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, Ostrava - Poruba, Czech Republic

Formato:	,
Enlaces:	The aim of this research is to create functional system which eliminates the noise of electrical devices. This system works on active basis, therefore it process parasitic signal itself and use it for elimination of the noise. On the first…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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33.

Backup Alternatives for 110 kV Lines
Houdek, Vit; VSB - Technical University of Ostrava - Rusek, Stanislav; VSB - Technical University of Ostrava - Gono, Radomir; VSB - Technical University of Ostrava

Formato:	,
Enlaces:	The paper describes backup alternatives for 110 kV lines. Line backup is one of input parameters used to optimise the renovation of 110 kV lines. The optimisation is based on the principle of reliability centred maintenance (RCM) which depends on…
Fecha:	2013-06-30
Recurso:	Advances in Electrical and Electronic Engineering

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34.

Laboratory Research of Hydrogen Production at VŠB - TU Ostrava, Laboratory Research of Hydrogen Production at VSB-Technical University of Ostrava
Vaculik, Jan; VSB - TU Ostrava - Moldrik, Petr; VSB - TU Ostrava - Hradilek, Zdenek; VSB - TU Ostrava

Formato:	,
Enlaces:	This paper elaborates on the hydrogen technology with respect to electrical power accumulation in hydrogen via Hogen GC600 electrolyzer. Further details will include options for storage of hydrogen into containers currently available. The measurements contained in the paper illustrate laboratory…
Fecha:	2013-03-30
Recurso:	Advances in Electrical and Electronic Engineering

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35.

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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36.

WDM in Courses of Communication Technologies
Filka, Miloslav - Bernkopf, Miroslav

Formato:	,
Enlaces:	This conference paper shows and demonstrates how modern technologies (such as WDM – Wavelength Division Multiplex) were introduced to students of Optical Networks lectured at Brno University of Technology, Faculty of Electrical Engineering and Communication, Dept. of Telecommunications.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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37.

Epitaxial Layers of InP Doped With Rare Elements for Use in Radiation Detector
Kozak, Halyna - Sopko, Bruno - Zdansky, Karel

Formato:	,
Enlaces:	We have focused on the investigation of the impact of Ce, Eu, Tm, Eu2O3 and Tm2O3 addition in LPE growth process on the properties of InP layers in the context of their application in detector structures.
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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38.

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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39.

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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40.

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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41.

Four-Wave Mixing Aplication in Semiconductor Optical Amplifier
Odrobinak, Radoslav

Formato:	,
Enlaces:	Four-Wave Mixing (FWM) in semiconductor optical amplifiers is an attrative mechanism for wavelenght coversion in wavelenght-division multiplexed (WDM) systems since it provides modulation format and bit rate transparency over wide tuning ranges. A series of systems experiments evaluating several aspects…
Fecha:	2011-07-07
Recurso:	Advances in Electrical and Electronic Engineering

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42.

Diagnostics and Reconfiguration of Control Systems
Krokavec, Dusan - Filasova, Anna

Formato:	,
Enlaces:	This contribution summarizes some of the major trends, as well as real opportunities for the application of system fault diagnosis and reconfiguration control structures in automatic control systems. There are referenced ongoing concepts for residual generation, described design approaches in virtual reconfiguration…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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43.

Mathematical Model of Thyristor Inverter Including a Series-parallel Resonant Circuit
Luft, Miroslaw; Technical University of Radom - Szychta, Elzbieta

Formato:	,
Enlaces:	The article presents a mathematical model of thyristor inverter including a series-parallel resonant circuit with theaid of state variable method. Maple procedures are used to compute current and voltage waveforms in the inverter.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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44.

Possibilities of Genetic Algorithm Application in the Calculation of Power Networks Operation,
Rapsik, Miroslav - Altus, Juraj

Formato:	,
Enlaces:	The paper describes the possibilities of genetic algorithm application by the reactive power flows’ optimization in Slovak power transmission system. The methods of reactive power flow calculation and the utilization of genetic algorithms for their minimalization are indicated in the…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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45.

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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46.

High-Freqeuncy Analysis of Three-Winding Autotransformers 400/121/34 kV
Gutten, Miroslav - Brandt, Martin - Polansky, Roman - Prosr, Pavel

Formato:	,
Enlaces:	This article deals with a description of methods of an experimental analysis concerning the actual condition of windings and magnetic circuit of the autotransformer, which is required in power transmission companies all over the world.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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47.

Analysis of PMMT Operation for Renewable (PV/FC) Energy Source
Sul, Robert - Fibich, Peter - Frivaldsky, Michal

Formato:	,
Enlaces:	Utilization and construction of renewable energy sources require complexity of whole system. It is considered touse a set of devices that are necessary for energy conversion, accumulation, preparation and its distribution into electrical power supply network. The way of realization…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

48.

Advanced Ceramics Electronics Application
Trnka, Pavel - Bujalobokova, Magdalena

Formato:	,
Enlaces:	Ceramics materials infringe human life from early years of the humankind. Together with the progress of the science and engineering, various materials and technologies have been used. Suitable materials and technologies have been used in the proper applications. This paper…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

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49.

Using of the Modern Semiconductor Devices Based on the SiC
Drabek, Pavel

Formato:	,
Enlaces:	This paper deals with possibility of application of the semiconductor devices based on the SiC (Silicon Carbide) inthe power electronics. Basic synopsis of SiC based materials problems are presented, appreciation of their properties incomparison with current using power semiconductor devices…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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50.

The Assessment of Working Conditions of Traction Substation for Power and Reactive Energy
Wojciechowski, Jerzy - Lukasik, Zbigniew

Formato:	,
Enlaces:	In this paper, problems concerning the management of reactive power of DC traction substation have been discussed. The structure of traction system and its main elements has been sketched. Reactive power issue with respect to rectifier sets has been presented.…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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51.

Quality of Power Supply in European View
Prokop, Lukas - Hradilek, Zdenek

Formato:	,
Enlaces:	This paper deals with comparisons of situation in quality of power supply regulation in some of European countries, which are interested in CEER (Council of European Energy Regulators). Especially we focused our analysis on reliability indices, relationship between supplier and…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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52.

Estimates of Quantities in a Hall Effect Geodynamo Theory
de Paor, Annraoi M; NUI Dublin

Formato:	,
Enlaces:	Currents, resistances, dynamo constant, Hall voltage coefficient and inductances are estimated for the author’s geodynamo theory incorporating the Hall Effect. It is concluded that the Hall Coefficient in the bulk liquid core of the Earth is approximately 1.512x10-1, orders of…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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53.

Estimation of Energy Not Supply
Medvec, Zdenek - Prokop, Lukas

Formato:	,
Enlaces:	Damages in industrial company are raising during electrical interruption of power supply. These damages have usually different character and financial damages are most usual. Value of damage is nearly pertinent to type of industrial branch and working load of production…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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54.

Analysis of Setups of the Control of Rail Microprocessor Systems
Kornaszewski, Mieczyslaw - Lukasik, Zbigniew

Formato:	,
Enlaces:	In the article will have been introduced possibilities following from the application of the microprocessor technology in rail systems of the control of traffic will remain for example of modern signalling on railway crossings. Introduction to microcomputer and microprocessor systems…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

55.

Numerical Solution of Magnetostatic Field of Maglev System
Sobotka, Jaroslav

Formato:	,
Enlaces:	The paper deals with the design of the levitation and guidance system of the levitation train Transrapid 08 by means of QuickField 5.0 – a 2D program formagnetic electromagnetic fields solutions.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

56.

Calculation of Forces Acting on Bars of Induction Machina
Hruska, Karel

Formato:	,
Enlaces:	This calculation is based on calculation of torque components of induction machines. Basic torque components are expanded, using knowledge of machine’s geometry, to the periphery of machine’s rotor. Using Fourier analysis of torque components it is possible to calculate forces…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

57.

Principles of Audio Watermarking
Hrncar, Martin - Krajcovic, Jan

Formato:	,
Enlaces:	The article contains a brief overview of modern methods for embedding additional data in audio signals. It could have many reasons - for the purposes of access control or identification related to particular type of audio. This secret information is…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

58.

Triple Play Service and IPTV Services Offered within it
Pajdusakova, Dagmar - Adamec, Bohumil

Formato:	,
Enlaces:	This paper deals with Triple Play multimedia service and figures its architecture. Triple Play offers voice, video and data services together in one customer connection. There is offered IPTV (Internet Protocol Television) service within this service, where we can include…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

59.

Influence of Electric Discharges on Bearings of Electric Machina
Foldyna, Jiri - Chmelik, Karel - Misak, Stanislav

Formato:	,
Enlaces:	Bearing currents are one of cause’s bearings faults. The character of a lubricator belongs to main factor influencing an inception of bearing currents. We have analyzed the electric character variety kind of lubricators; the influence of lubricators on a bearing…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

60.

Overview of Distributed Control Systems Formalisms
Holecko, Peter

Formato:	,
Enlaces:	This paper discusses a chosen set of mainly object-oriented formal and semiformal methods, methodics, environments and tools for specification, analysis, modeling, simulation, verification, development and synthesis of distributed control systems (DCS).
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

61.

The Parametric Model for PLC Reference Chanells and its Verification in Real PLC Environment
Roka, Rastislav

Formato:	,
Enlaces:	For the expansion of PLC systems, it is necesssary to have a detailed knowledge of the PLC transmission channel properties. This contribution shortly discusses characteristics of the PLC environment and a classification of PLC transmission channels. A main part is…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

62.

Formation of Signals Harmonized with the Channel of Connection with Different Quality Criteria
Cherneva, Galina Petkova - Andonov, Antonio

Formato:	,
Enlaces:	The paper presents the optimization of the transmitted signal form according to a number of quality energy criteria. It is the transmission efficiency that has been assessed for signals harmonized with the channel of connection in comparison to the common-used…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

63.

Methods of Risk Analysis of Telematic Objects
Stefanak, Jozef - Pribyl, Pavel - Spalek, Juraj

Formato:	,
Enlaces:	The paper focuses on basic description of the tunnel as a telematic object and its architecture. Conventional methods of risk analysis of telematic objects are introduced in relation to their safety. New approaches of risk quantification are shown in connection…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

64.

The Magnetic Fields of Electric Motors and their EMC
Kovac, Dobroslav - Kovacova, Irena

Formato:	,
Enlaces:	This paper deals with the computer analysis of the electromagnetic compatibility (EMC) problems focused on the area of electrical machines, which can also disclose the concerning startling facts. A problem of interference between electric motor and surrounding space caused by…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

65.

Some Thoughts on Electrical Interventions for the Control of Tremor in Parkinson's Dinase
Hearn, A. N.; NUI Dublin - Lowery, Madeleine; NUI Dublin - de Paor, Annraoi M; NUI Dublin

Formato:	,
Enlaces:	Ideas from control theory – state variable feedback, dither injection, the equivalent nonlinearity and the describing function-are applied to models developed to help understand the mechanisms of electrical interventions such as deep brain stimulation (DBS) for the alleviation of Parkinsonian…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

66.

Traction Transformer 1 MV.A, Superconducting, Oil-immersed and Medium Frequency
Krasl, Milan - Pechanek, Roman - Vlk, Rostislav

Formato:	,
Enlaces:	This paper deals with comparing 3 types of transformers - superconducting, oil-immersed and middle-frequency. These transformers can be used for locomotive as the main transformer. Weight, sizes and losses are introduced. The influence of eddy currents is describes by middle-frequency…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

67.

Sliding Mode Flux Observer of Induction Motor
Sutnar, Zdenek - Rodic, Miran - Peroutka, Zdenek

Formato:	,
Enlaces:	This paper deals with the sliding mode theory for direct torque and flux controlled (DTFC) induction motor drive. The aim of this paper is implementation of sliding mode theory for design of robust sensorless control of the drive with DTFC.…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

68.

Mathematical Models of MIMO Channel
Poloha, Peter - Wieser, Vladimir - Haring, Jan - Majer, Norbert

Formato:	,
Enlaces:	In this contribution, we try to resolve the problem with multipath MIMO channel in wireless environment. To understand the environment, where multipath signal is transported, theoretical models will be applied. We will take a look on theoretical models and results…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

69.

Directional Pattern Analysis of a Linear Phased Antenna
Haring, Jan - Majer, Norbert - Hronec, Rudolf

Formato:	,
Enlaces:	An antenna array is a system compound from simply radiators (dipoles, microstrip antennas), that together form desired radiation pattern. Phased array antennas consist of multiple stationary antenna elements, that are fed coherently and use variable phase or time-delay control at…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

70.

Analysis of Efficiency Characteristics of Squirrel-Cage Induction Motor Loaded With Water System Pump
Lukasik, Zbigniew; Technical University of Radom - Szychta, Leszek; Technical University of Radom

Formato:	,
Enlaces:	The article presents a method of calculating efficiency of squirrel-cage induction motor. This efficiency depends on frequency of the voltage supplied to the motor and on electrical power. Results of laboratory testing of the motor's efficiency are presented.
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

71.

The Turbulent Telecommunications
Kuchar, Anton

Formato:	,
Enlaces:	The paper depicts the rapidly changing scene in the telecommunications arena. It provides an overview of recentkey developments in technologies that enable access to broadband Internet, describes the trends in provisioning services onthe IP platform and discusses policy, regulatory and…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

72.

Location Based Services in GSM Networks and New Possibilities for their Application in Transport
Dubovan, Jozef - Dado, Milan

Formato:	,
Enlaces:	An enormous growth of mobile communication gives new challenges for new services creation. One of the possibilities is to focus attention on the localisation and localisation based services. It gives for mobile networks customers new information about position of another…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

73.

3D Reconstruction of NMR Images
Izak, Peter - Smetana, Milan - Hargas, Libor - Hrianka, Miroslav - Spanik, Pavol

Formato:	,
Enlaces:	This paper introduces experiment of 3D reconstruction NMR images scanned from magnetic resonance device. There are described methods which can be used for 3D reconstruction magnetic resonance images in biomedical application. The main idea is based on marching cubes algorithm. For…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

74.

Measuring of Block Error Rates in High-Speed Digital Networks
Ivaniga, Petr - Mikus, Ludovit

Formato:	,
Enlaces:	Error characteristics is a decisive factor for the digital networks transmission quality definition. The ITU – TG.826 and G.828 recommendations identify error parameters for high – speed digital networks in relation to G.821 recommendation. The paper describes the relations between…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

75.

Wireless Local Networks to Record the Railway Traffic Control Equipment Data
Gorczyca, Przemyslaw - Mikulski, Jerzy - Bialon, Andrzej

Formato:	,
Enlaces:	Article presents a concept of a distributed diagnostic railway traffic control system using the short – range wireless networks as a main communication medium.
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

76.

IT Security Aspects of Industrial Control Systems
Holecko, Peter - Krbilova, Izabela

Formato:	,
Enlaces:	This paper discusses a set of general network system architectures for industrial process control systems as well as vulnerabilities related to these systems and the IT threats these systems are exposed to from the point of view of Common Criteria…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

77.

Fault Diagnosis in Deaerator Using Fuzzy Logic
Srinivasan, S - Kanagasabapathy, P - Selvaganesan, N

Formato:	,
Enlaces:	In this paper a fuzzy logic based fault diagnosis system for a deaerator in a power plant unit is presented. The system parameters are obtained using the linearised state space deaerator model. The fuzzy inference system is created and rule…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

78.

Modeling of Current Transformers Under Saturation Conditions
Prochazka, Martin; University of West Bohemia

Formato:	,
Enlaces:	During a short circuit the input signal of the relay can be distort by the magnetic core saturation of the current transformer. It is useful to verify the behavior of CT by a mathematical model. The paper describes one phase…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

79.

Programmable Logic Controllers for Systems of Automatic of the Level Crossing
Kornaszewski, Mieczyslaw

Formato:	,
Enlaces:	The railway crossings are vulnerable to incidence of high number of accidents often deadly. In order to face this problem, the modern systems of automatic of the level crossing have been introduced. These systems are based on Programmable Logic Controllers,…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

80.

Modelling of Signal - Level Crossing System
Novak, Daniel

Formato:	,
Enlaces:	The author presents an object-oriented model of a railway level-crossing system created for the purpose of functional requirements specification. Unified Modelling Language (UML), version 1.4, which enables specification, visualisation, construction and documentation of software system artefacts, was used. The main…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

81.

Primary Factors Affecting Safety of Control System
Rastocny, Karol; University of Zilina - Foltan, Michal

Formato:	,
Enlaces:	Aim of the paper is to point out some of the factors that affect safety of control system. Already in initial stages of the control system life-cycle it is necessary to analyze the effect of each of these factors on…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

82.

Functional Safety Specification of Communication Profile PROFIsafe
Rofar, Jan - Franekova, Maria

Formato:	,
Enlaces:	Paper maps the trends in area of safety-related communication within PROFIBUS and PROFINET industry networks. There are analyses safety measures and Fail-safe parameters of PROFIsafe profile in version V2 and their localisation in Safety Communication Layer SCL, which guarantees Safety…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

83.

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

Recurso libre

84.

Contribution to Control of an Elastic Two-Mass System by Means of Genetic Algorithm
Ferkova, Zelmira - Zboray, Ladislav

Formato:	,
Enlaces:	Oscillations of an elastic two-mass system with all known parameters may be suppressed by suitable feedback signal. An observer enables to estimate this feedback without measurement of load mechanism speed. This article contains application of genetic algorithms for identification of…
Fecha:	2011-06-20
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

85.

Increasing of RFID System Read Range
Vestenicky, Peter

Formato:	,
Enlaces:	This paper describes some computations needed to increase RFID system read range twice without any changes in RFID reader. The increasing of read range is done only by proper selection of RFID marker parameters – coil diameter and number of…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

86.

Development and Analysis of Train Brake Curve Calculation Methods with Complex Simulation
Vincze, Bela - Tarnai, Geza

Formato:	,
Enlaces:	This paper describes an efficient method using simulation for developing and analyzing train brake curve calculation methods for the on-board computer of the ETCS system. An application example with actual measurements is also presented.
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

87.

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

Recurso libre

88.

Safety of Transport Process
Zahradnik, Jiri - Janota, Ales

Formato:	,
Enlaces:	The paper deals with formulation of general rules and principles needed for ensuring safety of the transport process.
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

89.

Three Phase Soft Commutation Auxilary Resonant Pole Inverter
Sladecek, Vaclav

Formato:	,
Enlaces:	This paper covers the circuit modification of the power part of the inverter with auxiliary resonant poles utilising configuration of switches realised with routinely produced IGBT modules. Covered is also the control optimisation which goal is the minimisation of switching…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

90.

Parameters Evaluation of PLC Dependability and Safety
Zdansky, Juraj - Rastocny, Karol

Formato:	,
Enlaces:	This paper is focused on evaluation of dependability and safety parameters of PLC (Programmable Logic Controller). Achievement of requested level of these parameters is an application assumption for using PLC in control of safety critical processes. Evaluation of these parameters…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

91.

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

Recurso libre

92.

ZnO Nanostructures Prepared by RF Sputtering
Flickyngerova, Sona - Tvarozek, Vladimir - Novotny, Ivan - Satka, Alexander - Sutta, Pavol

Formato:	,
Enlaces:	ZnO is shortly reviewed as significant material for nanotechnology. Sputtered ZnO thin films showed colummarpolycrystalline structure with preffered orientation in <002> direction, resistivity ~ 1 Wcm and optical bandgap Eg = 3,33 eV. Nanoclusters of Au and ZnO were formed…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

93.

Calculation of S11 Parameter of Coplanar Strip and Influence of Technology Process
Heindl, Karel - Blecha, Tomas - Skocil, Vlastimil - Braun, Jaromir

Formato:	,
Enlaces:	The paper is focused on a calculation of the S11 parameter of the coplanar strips. The primary parameterscalculations of the coplanar strips are described in the first part. The scattering parameters are defined. The calculation of the S11 parameter and…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

94.

Electric Power Systems - EMC
Kovacova, Irena - Kovac, Dobroslav

Formato:	,
Enlaces:	The paper is dealing with some electromagnetic compatibility (EMC) problems of converters and inverters, which are utilized for feeding of electric machines.
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

95.

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

Recurso libre

96.

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

Recurso libre

97.

On the Stability of Average Effective Wage Rate in Enterprise
Balciar, Andrej

Formato:	,
Enlaces:	In the article a model of the investment activity of an enterprise including financing of investment from new loans, from net profit and with the help of depreciation is designed. Equilibrium of average effective wage rate is defined and its…
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

98.

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

Recurso libre

99.

Construction of Lukasiewicz Filters
Kalina, Martin - Havranova, Zuzana

Formato:	,
Enlaces:	The paper deals with Łukasiewicz filters, based on aggregating of weights. Some Łukasiewicz filters are constructed and conditions to be put on the values of the weights are given.
Fecha:	2011-06-22
Recurso:	Advances in Electrical and Electronic Engineering

Recurso libre

100.

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