Now showing items 21-40 of 100

    • OOFEM — an Objectoriented Simulation Tool for Advanced Modeling of Materials and Structures 

      Author: Patzák , Bořek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The aim of this paper is to describe the object-oriented design of the finite element based simulation code. The overall, object-oriented structure is described, and the role of the fundamental classes is discussed. The ...
    • Evaluation of Bioelectrical Impedance Spectroscopy for the Assessment of Extracellular Body Water 

      Author: Weyer , Sören; Röthlingshöfer , Lisa; Walter , Marian; Leonhardt , Steffen
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This study evaluates bioelectrical impedance spectroscopy (BIS) measurements to detect body fluid status. The multifrequency impedance measurements were performed in five female pigs. Animals were connected to an extracorporeal ...
    • Integration of Autonomous UAVs into Multiagent Simulation 

      Author: Selecký , Martin; Meiser , Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      In recent years, Unmanned Aerial Vehicles (UAVs) have attracted much attention both in the research field and in the field of commercial deployment. Researchers recently started to study problems and opportunities connected ...
    • Physical and Chemical Aspects of the Nucleation of CementBased Materials 

      Author: Demo , Pavel; Sveshnikov , Alexey; Hošková , Šárka; Ladman , David; Tichá , Petra
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      A theoretical model of the nucleation of portlandite is proposed, and the critical size of a portlandite cluster and the energy barrier of nucleation are determined. The steady state nucleation rate and the time lag of the ...
    • Flexible MultiElectrode Array for Medical Applications 

      Author: Winkin , Nadine; Mokwa , Wilfried
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      A flexible multi-electrode array (MEA) with an embedded silicon chip for electrical stimulation of neurons or for recording action potentials has been manufactured and characterized. Possible improvements for medical ...
    • A Network Simulation Tool for Task Scheduling 

      Author: Votava , Ondřej
      (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 ...
    • Control Algorithms for Largescale Singleaxis Photovoltaic Trackers 

      Author: Schneider , Dorian
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The electrical yield of large-scale photovoltaic power plants can be greatly improved by employing solar trackers. While fixed-tilt superstructures are stationary and immobile, trackers move the PV-module plane in order ...
    • A Study of Parameters Setting of the STADZT 

      Author: Turoň , Václav
      (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 ...
    • Energetic Approach to Large Strain Gradient Crystal Plasticity 

      Author: Kratochvíl , Jan; Kružík , Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      We formulate a problem of the evolution of elasto-plastic materials subjected to external loads in the framework of large deformations and multiplicative plasticity. We focus on a spontaneous inhomogenization interpreted ...
    • Research Trends for PID Controllers 

      Author: Visioli , Antonio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper analyses the most significant issues that have been recently been addressed by researchers in the field of Proportional-Integral-Derivative (PID) controllers. In particular, the most recent techniques proposed ...
    • Accelerometerassisted PPG Measurement During Physical Exercise Using the LAVIMO Sensor System 

      Author: Santos , Susana Aguiar; Venema , Boudewijn; Leonhardt , Steffen
      (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 ...
    • ESSO — Electrification of the Central Labe Districts between 1916 and 1950 

      Author: Holovský , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Elektrárenský svaz stredolabských okresu, LLC (in English “The Power Plant Union of the Central Labe (Elbe)” districts, which will be referred to here as “ESSO”), came into existence in 1916 in response to growing interest ...
    • A Comparison of Power Quality Controllers 

      Author: Černek , Petr; Brejcha , Michal; Hájek , Jan; Pígl , Jan
      (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 ...
    • Model of Customer Buying Behavior in the CZ Mobile Telecommunication Market 

      Author: Grünwald , Ondrej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The Czech mobile telecommunication market constitutes an oligopoly of three operators, who have built a privileged position and effectively crush any competition. The entry of a new operator has been considered by the ...
    • A Taskdriven Grammar Refactoring Algorithm 

      Author: Halupka , Ivan; Kollár , Ján; Pietriková , Emília
      (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 ...
    • Overhead Line Mechanics Taking the Influence of Wind into Account 

      Author: Müller , Miroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper deals with problems of overhead line motion. The line model is based on a dynamic description of a catenary curve. The benefits of dynamic modeling in this field are decrypted, and there is an explanation of one ...
    • Energy Estimation of Distributed Phaseshift Beamforming 

      Author: Černý , Viktor
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Ad-hoc and sensor networks are composed of small, low-power devices, which can connect between themselves without the help of an infrastructure. Research in this area has been both extensive and intensive and is still very ...
    • Gated Graphene Electrical Transport Characterization 

      Author: Náhlík , Josef; Janoušek , Michal; Šobáň , Zbyněk
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Graphene is a very interesting new material, and promises attractive applications in future nanodevices. It is a 2D carbon structure with very interesting physical behavior. Graphene is an almost transparent material that ...
    • Hygiena 3 a Forgotten Project for Electrolytic Water Treatment 

      Author: Drnek , Kryštof
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      In the interwar period, the city of Prague had to resolve the problem of treating the polluted water produced by its citizens. From 1933 - 1936 an ambitious competition was held. The idea behind the competition was to bring ...
    • Optimal Combustion Conditions for a Smallscale Biomass Boiler 

      Author: Plaček , Viktor; Oswald , Cyril; Hrdlička , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper reports on an attempt to achieve maximum efficiency and lowest possible emissions for a small-scale biomass boiler. This aim can be attained only by changing the control algorithm of the boiler, and in this way ...