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Aproximadamente 22 registro(s) hasta el momento: (journal)

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The Efficiency of Constraint Based Routing in MPLS Networks
Medvecky, Martin

Formato:	,
Enlaces:	The paper presents the simulation results and evaluates the efficiency of constraint base routing algorithms used in MPLS network from the point of their usability in Next Generation Networks. The efficiency of constraint based routing is evaluated according following criteria:…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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Binary Modulation Formats in Optical Access Networks
Tejkal, Vladimir - Filka, Miloslav - Reichert, Pavel - Sporik, Jan

Formato:	,
Enlaces:	In this paper the binary modulation formats and their application in passive optical networks have been discussed. Passive optical networks are characterized by dividing the optical signal between several end users by using passive splitters, which added a significant attenuation…
Fecha:	2010-12-31
Recurso:	Advances in Electrical and Electronic Engineering

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A Concept of a Hybrid WDM/TDM Topology Using the Fabry-Perot Laser in the Optiwave Simulation Environment
Poboril, Radek; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Latal, Jan - Koudelka, Petr - Vitasek, Jan - Siska, Petr - Skapa, Jan - Vasinek, Vladimir

Formato:	,
Enlaces:	The aim of this article is to point out the possibility of solving problems related to a concept of a flexible hybrid optical access network. The entire topology design was realized using the OPTIWAVE development environment in which particular test…
Fecha:	2011-12-21
Recurso:	Advances in Electrical and Electronic Engineering

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Scanning Probe Microscopy as a Tool for Investigation of Biomaterials
Novotna, Veronika - Knapek, Alexandr - Tomanek, Pavel - Safarova, Sarka

Formato:	,
Enlaces:	Super-microscopic techniques like scanning tunnelling microscopy, atomic force microscopy or scanning near-field optical microscopy allows investigate micro- and/or nano-scale surfaces and structures. In this paper, both Environmental scanning electron microscope (ESEM) and Scanning near field optical microscope (SNOM) have been…
Fecha:	2012-12-29
Recurso:	Advances in Electrical and Electronic Engineering

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Current Condition in the Transport Telematics
Mikulski, Jerzy; Silesian University of Technology, Katowice - Kedziora, Kacper

Formato:	,
Enlaces:	The term “telematics”, which originated more than ten years ago, stands for integration of technologies and solutions from the field of telecommunication, automation and computer science. Telematics is the combination of words “tele” (transfer at some distance, remote access) and…
Fecha:	2010-12-31
Recurso:	Advances in Electrical and Electronic Engineering

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Introduction to Feedforward Control of Electric Drives - Rules and Limits
Malek, Michal - Makys, Pavol - Stulrajter, Marek

Formato:	,
Enlaces:	Electric servodrives are characterized by precise tracking and its derivations. The way to meet this goal cost them a number of obstacles, whether variations associated with end-stage of astatism, changes in the positioning system parameters or to changes in load…
Fecha:	2010-12-31
Recurso:	Advances in Electrical and Electronic Engineering

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Short-Term Load Forecast in Electric Energy System in Bulgaria
Asenova, Irina - Georgiev, Dimitar

Formato:	,
Enlaces:	As the accuracy of the electricity load forecast is crucial in providing better cost effective risk management plans, this paper proposes a Short Term Electricity Load Forecast (STLF) model with high forecasting accuracy. Two kind of neural networks, Multilayer Perceptron…
Fecha:	2010-12-31
Recurso:	Advances in Electrical and Electronic Engineering

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Innovation of Methods for Measurement and Modelling of Twisted Pair Parameters
Cepa, Lukas - Kozak, Milos - Vodrazka, Jiri

Formato:	,
Enlaces:	The goal of this paper is to optimize a measurement methodology for the most accurate broadband modelling of characteristic impedance and other parameters for twisted pairs. Measured values and theirs comparison is presented in this article. Automated measurement facility was…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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Damaged Watermarks Detection in Frequency Domain as a Primary Method for Video Concealment
Hudec, Robert - Bojmir, Martin - Benco, Miroslav

Formato:	,
Enlaces:	This paper deals with video transmission over lossy communication networks. The main idea is to develop video concealment method for information losses and errors correction. At the beginning, three main groups of video concealment methods, divided by encoder/decoder collaboration, are…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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10.

Tree-Oriented Data Acquisition Architecture
Novotny, Vit

Formato:	,
Enlaces:	Hierarchical system of network nodes is suitable solution how to collect and how to pre-process data from large amount of end-nodes. By contrast to flat (one layer) architecture there are special intermediary nodes used and they are called summarization nodes.…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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11.

Comparison of Current Frame-Based Phoneme Classifiers
Pfeifer, Vaclav - Balik, Miroslav

Formato:	,
Enlaces:	This paper compares today’s most common frame-based classifiers. These classifiers can be divided into the two main groups – generic classifiers which creates the most probable model based on the training data (for example GMM) and discriminative classifiers which focues…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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12.

Single Input Variable Universe Fuzzy Controller with Contraction-Expansion Factor for Inverted Pendulum in Real Time
Dhanni, Yogesh Kumar; IIT Roorkee, India

Formato:	,
Enlaces:	In Conventional Fuzzy Logic Controller (CFLC), input variables are the error (E) and the change-in-error (EC) regardless of the complexity of controlled plant. The rule table constructed for CFLC is two dimensional in input space. This two dimensional rule table…
Fecha:	2012-12-29
Recurso:	Advances in Electrical and Electronic Engineering

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13.

Voltage Mode OTRA MOS-C Single Input Multi Output Biquadratic Universal Filter
Pandey, Rajeshwari; Delhi Technological University,Delhi - Pandey, Neeta; Delhi Technological University,Delhi - Paul, Sajal Kumar; Indian School of Mines, Dhanbad, India - Singh, Ajay - Sriram, Balamurali - Trivedi, Kaushalendra

Formato:	,
Enlaces:	In this paper, an Operational transresistance amplifier (OTRA) based MOS-C voltage mode single input multi output (SIMO) biquadratic universal filter configuration is proposed. The configuration is made fully integrated by implementing the resistors using matched transistors operating in the linear…
Fecha:	2012-12-29
Recurso:	Advances in Electrical and Electronic Engineering

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14.

, The Real Implementation of NLMS Channel Equalizer into the System of Software Defined Radio
Martinek, Radek; Faculty of Electrical Engineering and Computer Science VSB-TU Ostrava - Zidek, Jan; Faculty of Electrical Engineering and Computer Science VSB-TU Ostrava

Formato:	,
Enlaces:	, This paper deals with modern wireless transmission systems. It focusses on real implementation of NLMS channel equalizer into the system of software defined radio. The authors aimed to conduct a real measurement (BER vs. Eb/No) using modern modular PXI…
Fecha:	2012-12-29
Recurso:	Advances in Electrical and Electronic Engineering

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15.

Cross-Sectional Measuring of Optical Beam
David, Tomas; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Latal, Jan; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Hanacek, Frantisek; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Koudelka, Petr; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Vitasek, Jan; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Siska, Petr; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Skapa, Jan; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic - Vasinek, Vladimir; Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB – Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic

Formato:	,
Enlaces:	This article deals with problematic of measuring of optical beam in free space optics (FSO). The professional FSO link was created between two buildings standing 1,5 kilometers apart from each other. Signal passing through the atmospheric media between optical heads…
Fecha:	2011-12-21
Recurso:	Advances in Electrical and Electronic Engineering

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16.

Application of Results of Experimental Identification in Control of Laboratory Helicopter Model
Dolinsky, Kamil; Czech Technical University in Prague - Jadlovska, Anna; Technical University of Kosice

Formato:	,
Enlaces:	This article deals with experimental identification and control of laboratory helicopter model CE 150 manufactured by company Humusoft. Structure of the identified system was approximated by linear black-box models. Discrete Input/Output Auto-Regressive Moving Average model with eXternal input (ARMAX) and…
Fecha:	2011-12-21
Recurso:	Advances in Electrical and Electronic Engineering

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17.

Study of Vivaldi Algorithm in Energy Constraint Networks
Moravek, Patrik - Komosny, Dan - Vajsar, Pavel - Sveda, Jaroslav; Department of Telecommunication, BUT - Handl, Tomas

Formato:	,
Enlaces:	The presented paper discusses a viability of Vivaldi localization algorithm and synthetic coordinate system in general to be used for localization purposes in energy constraint networks. Synthetic coordinate systems achieve good results in IP based networks and thus, it could…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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18.

E-model MOS Estimate Improvement through Jitter Buffer Packet Loss Modelling
Kovac, Adrian - Halas, Michal - Orgon, Milos - Voznak, Miroslav

Formato:	,
Enlaces:	Proposed article analyses dependence of MOS as a voice call quality (QoS) measure estimated through ITU-T E-model under real network conditions with jitter. In this paper, a method of jitter effect is proposed. Jitter as voice packet time uncertainty appears…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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19.

Security Analysis System to Detect Threats on a SIP VoIP Infrasctructure Elements
Rezac, Filip - Voznak, Miroslav - Tomala, Karel - Rozhon, Jan - Vychodil, Jiri

Formato:	,
Enlaces:	SIP PBX is definitely the alpha and omega of any IP telephony infrastructure and frequently also provides other services than those related to VoIP traffic. These exchanges are, however, very often the target of attacks by external actors. The article…
Fecha:	2011-12-27
Recurso:	Advances in Electrical and Electronic Engineering

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20.

Novel Power Flow Problem Solutions Method’s Based on Genetic Algorithm Optimization for Banks Capacitor Compensation Using an Fuzzy Logic Rule Bases for Critical Nodal Detections
Abdelfatah, Nasri; Bechar University - Brahim, Gasbaoui; engineer

Formato:	,
Enlaces:	The Reactive power flow’s is one of the most electrical distribution systems problem wich have great of interset of the electrical network researchers, it’s cause’s active power transmission reduction, power losses decreasing, and the drop voltage’s increase. In this research…
Fecha:	2011-12-21
Recurso:	Advances in Electrical and Electronic Engineering

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21.

A New Threshold Switching Scheme for a DVB-RCS Mobile Return Link in a Terrestrian Railway Scenario
Tropea, Mauro; Dipartimento di Elettronica Informatica e Sistemistica Faculty of Engineering University of Calabria

Formato:	,
Enlaces:	The new standard for DVB-RCS includes guidelines for mobile user in the market of aircraft, maritime and terrestrial transportation. The standard proposed by ETSI suggests the possibility of using a continuous carrier operation mode in the return channel, beside the…
Fecha:	2012-12-29
Recurso:	Advances in Electrical and Electronic Engineering

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22.

Evaluation of Resonance Properties of the Human Body Models Situated in the RF Field
Cocherova, Elena - Malicky, Gabriel - Kupec, Peter - Stofanik, Vladimir - Pucik, Jozef

Formato:	,
Enlaces:	The radio-frequency (RF) electromagnetic field absorption in the human body model is investigated in this article. Absorption of prolate model of the biological body exhibits resonance properties in the case of so called E polarization. This occurs in the arrangement…
Fecha:	2012-12-29
Recurso:	Advances in Electrical and Electronic Engineering