Prohlížení Acta Polytechnica. 2012, vol. 52 dle názvu
Zobrazují se záznamy 1-20 z 100
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A Comparison of Power Quality Controllers
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper focuses on certain types of FACTS (Flexibile AC Transmission System) controllers, which can be used for improving the power quality at the point of connection with the power network. It focuses on types of ... -
A Flexible Adjustment and Control System for Hydraulic Machines
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)Due to the advantages of hydraulic systems with variable displacement, it was necessary to design a control system that can adjust the pressure, flow, power or a combination of these features, that can be easily integrated ... -
A Micromechanics-Based Model for Stiffness and Strength Estimation of Cocciopesto Mortars
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)The purpose of this paper is to propose an inexpensive micromechanics-based scheme for stiffness homogenization and strength estimation of mortars containing crushed bricks, known as cocciopesto. The model utilizes the ... -
A Network Simulation Tool for Task Scheduling
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)Distributed computing may be looked at from many points of view. Task scheduling is the viewpoint, where a distributed application can be described as a Directed Acyclic Graph and every node of the graph is executed ... -
A Neural Network Model for Predicting NOx at the Mělník 1
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents a non-conventional dynamic neural network that was designed for real time prediction of NOx at the coal powder power plant Mělnik 1, and results on real data are shown and discussed. The paper also ... -
A Numerical Study of Wind Flow Over a Coal Storage Shelter
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents some of the main numerical results obtained while simulating the wind flow over a shelter covering a coal storage. The aim of this numerical study was to evaluate the change in flow patterns caused by ... -
A Pulverized Coal-Fired Boiler Optimized for Oxyfuel Combustion Technology
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents the results of a study on modifying a pulverized coal-fired steam boiler in a 250 MWe power plant for oxygen combustion conditions. The entry point of the study is a boiler that was designed for standard ... -
A Study of Parameters Setting of the STADZT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper deals with the new time-frequency Short-Time Approximated Discrete Zolotarev Transform (STADZT), which is based on symmetrical Zolotarev polynomials. Due to the special properties of these polynomials, STADZT ... -
A Study of the Properties of Electrical Insulation Oils and of the Components of Natural Oils
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents a study of the electrical and non-electrical properties of insulating oils. For the correct choice of an electrical insulation oil, it is necessary to know its density, dynamic viscosity, dielectric ... -
A Task-driven Grammar Refactoring Algorithm
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents our proposal and the implementation of an algorithm for automated refactoring of context-free grammars. Rather than operating under some domain-specific task, in our approach refactoring is perfomed on ... -
A Thermogravimetric Study of the Behaviour of Biomass Blends During Combustion
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)The ignition and combustion behavior of biomass and biomass blends under typical heating conditions were investigated. Thermogravimetric analyses were performed on stalk and woody biomass, alone and blended with various ... -
A Way to Use Waste Heat to Generate Thermoelectric Power
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)In recent years there has been rising interest in thermoelectric generation as a potential source of electric power using waste heat. This paper describes thermoelectric power generation from waste heat from biomass boilers, ... -
Accelerometer-assisted PPG Measurement During Physical Exercise Using the LAVIMO Sensor System
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)A method is presented for long-term monitoring of vital signs tested during physical exercise. The system is based on reflective photoplethysmography (PPG), whose main component is a micro-optoelectronic sensor. The sensor ... -
Advanced Functions of a Modern Power Source for GMAW Welding of Steel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper evaluates the use of a modern welding power source equipped with advanced arc control functions. At the Laboratory of Welding Technologies of CTU in Prague we have focused on GMAW welding of steel using Sigma ... -
An Application of the Individual Channel Analysis and Design Approach to Control of a Two-input Two-output Coupled-tanks System
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)Frequency-domain methods have provided an established approach to the analysis and design of single-loop feedback control systems in many application areas for many years. Individual Channel Analysis and Design (ICAD) is ... -
An Optimal Procedure for Determining the Height Parameters of Fracture Surfaces
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents an attempt to find an optimal procedure for determining the height parameters of fracture surfaces. This is a useful task that may significantly increase the reliability of topographic analyses of solids. ... -
Angular Distribution of GRBs
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)We studied the complete randomness of the angular distribution of BATSE gamma-ray bursts (GRBs). Based on their durations and peak fluxes, we divided the BATSE sample into 5 subsamples (short1, short2, intermediate, long1, ... -
Application of Induction Heating for Brazing Parts of Solar Collectors
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper reports on the application of induction heating for brazing parts of solar collectors made of Al alloys. The tube-flange joint is a part of the collecting pipe of a solar collector. The main task was to design ... -
Biomass Gasification — Primary Methods for Eliminating Tar
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This present paper deals with primary methods for reducing tar in biomass gasification, namely by feeding a natural catalyst into a fluidized bed. This method is verified using an experimental pilot plant. -
BOOTES Observation of GRB 080603B
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)We report on multicolor photometry of long GRB080603B afterglow from BOOTES-1B and BOOTES-2. The optical afterglow has already been reported to present a break in the optical lightcurve at 0.12 ± 0.2 days after the trigger. ...