Poslední příspěvky

  • The Intriguing Nature of the Cataclysmic Variable SS Cygni 

    Autor: Giovannelli , F.; Sabau-Graziati , L.
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
    The classification of SS Cyg as a dwarf nova (DN), a subclass of the non–magnetic (NM) cataclysmic variable (CV) has been considered by most of the community as well established because of a paper appeared in Nature (Bath ...
  • A Study of the Properties of Electrical Insulation Oils and of the Components of Natural Oils 

    Autor: Spohner , Milan
    (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 ...
  • Diamond Films for Implantable Electrodes 

    Autor: Henychová , Petra; Hiřmanová , Klára; Vraný , Martin
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
    Diamond is a promising material for implantable electrodes due to its unique properties. The aim of this work is to investigate the growth of boron-doped nanocrystalline diamond (B-NCD) films by plasma-enhanced microwave ...
  • The Electrification of Tramways in Ostrava in 1900–1901 

    Autor: Závodná , Michaela
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
    This paper focuses on the electrification of tramways in Ostrava in 1900-1901. As the administrative, economic and cultural centre of an evolving industrial agglomeration, Ostrava had specific transportation requirements. ...
  • Hierarchical Modeling of Mastic Asphalt in Layered Road Structures Based on the Mori-Tanaka Method 

    Autor: Valenta , Richard; Šejnoha , Michal
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
    We present an application of the Mori-Tanaka micromechanical model for a description of the highly nonlinear behavior of asphalt mixtures. This method is expected to replace an expensive finite element-based fully-coupled ...
  • A Micromechanics-Based Model for Stiffness and Strength Estimation of Cocciopesto Mortars 

    Autor: Nežerka , Václav; Zeman , Jan
    (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 ...
  • Evaluation of Bioelectrical Impedance Spectroscopy for the Assessment of Extracellular Body Water 

    Autor: 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 ...
  • Geometrical Modeling of Concrete Microstructure for the Assessment of ITZ Percolation 

    Autor: Rypl , Daniel; Bým , Tomáš
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
    Percolation is considered to be a critical factor affecting the transport properties of multiphase materials. In the case of concrete, the transport properties are strongly dependent on the interfacial transition zone ...
  • Physical and Chemical Aspects of the Nucleation of Cement-Based Materials 

    Autor: 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 ...
  • Micromechanical Analysis of Cement Paste with Carbon Nanotubes 

    Autor: Šmilauer , Vít; Hlaváček , Petr; Padevět , Pavel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
    Carbon nanotubes (CNT) are an attractive reinforcement material for several composites, due to their inherently high strength and high modulus of elasticity. There are controversial results for cement paste with admixed ...
  • Flexible Multi-Electrode Array for Medical Applications 

    Autor: 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 

    Autor: 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 ...
  • Energetic Approach to Large Strain Gradient Crystal Plasticity 

    Autor: 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 ...
  • Accelerometer-assisted PPG Measurement During Physical Exercise Using the LAVIMO Sensor System 

    Autor: 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 

    Autor: 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 Task-driven Grammar Refactoring Algorithm 

    Autor: 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 ...
  • Integration of Autonomous UAVs into Multi-agent Simulation 

    Autor: 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 ...
  • Overhead Line Mechanics Taking the Influence of Wind into Account 

    Autor: 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 ...
  • Gated Graphene Electrical Transport Characterization 

    Autor: 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 ...
  • Control Algorithms for Large-scale Single-axis Photovoltaic Trackers 

    Autor: 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 ...

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