Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 64-83 z 880

    • Algorithms for Solving Darcian Flow in Structured Porous Media 

      Autor: Kuráž , Michal; Mayer , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      This paper presents several algorithms that were implemented in DRUtES [1], a new open source project. DRUtES is a finite element solver for coupled nonlinear parabolic problems, namely the Richards equation with the dual ...

    • ALTERNATIVE SELECTION FUNCTIONS FOR INFORMATION SET MONTE CARLO TREE SEARCH 

      Autor: Lisy , Viliam
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We evaluate the performance of various selection methods for the Monte Carlo Tree Search algorithm in two-player zero-sum extensive-form games with imperfect information. We compare the standard Upper Confident Bounds ...

    • AN AIRPLANE WITH UNCONVENTIONALLY PLACED PROPELLER POWER UNIT 

      Autor: Červinka , Jan; Kulhánek , Robert; Pátek , Zdeněk
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      The significance of the influence of operating propellers on the aircraft aerodynamic characteristics is well-known. Wind tunnel testing of an airplane model with operating propellers is a complex task regarding the required ...

    • AN ANALYSIS OF SPATIAL STRUCTURE OF URBAN REGIONAL NETWORKS USING GIS 

      Autor: Kostin , Vitalii; Halounová , Lena
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Road network is the foundation of the urbanization process. Initially, it represented an indispensable part not only for the very existence of cities but also for their further economic and social development. Gradually ...

    • AN ANALYSIS OF THE LIQUID FILMS BREAK-UP USING THE COMPUTER VISION TECHNIQUE 

      Autor: Měšťanová, Lucie; Bartoš, Ondřej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The aim of this paper is to introduce a novel approach for analysing the droplet formation in a transonic flow. The method suggested in this work is based on the combination of the measured data from the wind tunnel by an ...

    • An Application of the Individual Channel Analysis and Design Approach to Control of a Two-input Two-output Coupled-tanks System 

      Autor: Murray-Smith , David J.
      (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 EXPERIMENTAL ASSESSMENT OF THE PLATE HEAT EXCHANGER CHARACTERISTICS BY WILSON PLOT METHOD 

      Autor: Opatřil , Jan; Havlík , Jan; Bartoš , Ondřej; Dlouhý , Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      An aim of this paper is suggestion of the evaluation method based on the experimental data and the Wilson plot method for the Plate Heat Exchangers (PHE). For the purpose of the project the new experimental loop was built ...

    • AN EXPERIMENTAL INVESTIGATION INTO MOISTURE-INDUCED EXPANSION OF PLASTERS 

      Autor: Sovják , Radoslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper presents an experimental study on moisture-induced expansion of selected plasters. Contactless measurement is introduced and a coefficient of moisture expansion for different building plasters is established. ...

    • AN INTERPOLATION METHOD FOR DETERMINING THE FREQUENCIES OF PARAMETERIZED LARGE-SCALE STRUCTURES 

      Autor: Nasisi , Salvatore; Valášek , Michael; Vampola , Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Parametric Model Order Reduction (pMOR) is an emerging category of models developed with the aim of describing reduced first and second-order dynamical systems. The use of a pROM turns out useful in a variety of applications ...

    • An Investigation of corrosion of friction welded and post-weld heat-treated AA6061/SiC/graphite hybrid composites 

      Autor: Senthilkumar, Jadamuni; Kumar, Pavan S. M.; Balasubramanian, Manickam
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The aluminium-based hybrid metal matrix composites have noteworthy applications in sub-sea installations, structures of deep-sea crawlers, submarine parts, engine cylinders, drum brakes etc., as they possess high strength, ...

    • An Optimal Procedure for Determining the Height Parameters of Fracture Surfaces 

      Autor: Ficker , T.
      (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. ...

    • ANAEROBIC DIGESTION OF LANDFILL LEACHATE WITH NATURAL ZEOLITE AND SUGARCANE BAGASSE FLY ASH AS THE MICROBIAL IMMOBILIZATION MEDIA IN PACKED BED REACTOR 

      Autor: Sudibyo , Hanifrahmawan; Shabrina Lini, Zata; Wondah Rafih, Hartika; Hastuti Tri, Retno; Purnomo Wahyu, Chandra; Budhijanto , Wiratni
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      To enhance the digestion rate of a landfill leachate in the anaerobic packed bed reactor, a natural zeolite and sugarcane bagasse fly ash (BFA) were tested as the immobilization media. In order to scale up this process and ...

    • ANALYSES OF WASTE PRODUCTS OBTAINED BY LASER CUTTING OF AW-3103 ALUMINIUM ALLOY 

      Autor: Loskot , Jan; Zubko , Maciej; Janikowski , Zbigniew
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      In the presented research, the methods of scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction and transmission electron microscopy were applied to analyse the powder waste obtained by ...

    • ANALYSIS AND IMPLEMENTATION OF APPLICATION SCHEMAS FOR THE INSPIRE BUILDINGS THEME 

      Autor: Med, Michal; Souček, Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      Implementing the INSPIRE directive involves transforming various data themes into the structure and content given by Data Specifications published by the Joint Research Center of the European Commission. The data is to be ...

    • ANALYSIS OF DALLARA T12 RACE CAR FRONT WING VIBRATIONS 

      Autor: Sorokin Alekseevich, Pavel; Khryakov Stanislavovich, Kirill; Gommers , Michiel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      This work investigates aerodynamic elements’ vibrations of high-speed vehicles on the example of the Dallara T12 race car front wing. Made up energy spectrums of wing vibrations for three specific cases arising during ...

    • Analysis of factors affecting the efficiency of Jatropha curcas oil as an asphaltene stabiliser 

      Autor: Marín Velásquez, Tomás Darío; Arriojas Tocuyo, Dany Day Josefina
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The effect of temperature and applied dose on the efficiency of Jatropha curcas seed oil as an asphaltene stabiliser was studied. Two crude oil samples (light and medium) were used. J. curcas oil was subjected to heating ...

    • ANALYSIS OF INTENSIVELY BLASTED ELECTRIC ARC BURNING IN THE ARC HEATER'S ANODE CHANNEL 

      Autor: Senk , Josef; Jakubova , Ivana; Laznickova , Ilona
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      The paper deals with the description of the intensively blasted electric arc burning in Ar in the anode channel of the arc heater operated under various conditions. Directly measured experimental data (current, voltage, ...

    • ANALYSIS OF MECHANICAL PROPERTIES OF HYDROTHERMALLY CURED HIGH STRENGTH CEMENT MATRIX FOR TEXTILE REINFORCED CONCRETE 

      Autor: Holčapek , Ondřej; Vogel , Filip; Konvalinka , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The main objective of this article is to describe the influence of hydrothermal curing conditions in an autoclave device (different pressure and temperature), which took place at various ages of a fresh mixture (cement ...

    • Analysis of output voltage ripple for dual randomized PWM buck converter operating in continuous and discontinuous conduction modes 

      Autor: Boudouda, Aimad; Boudjerda, Nasserdine; Nafa, Fares
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Dual Randomized Pulse Width Modulation (DRPWM) is renowned for its better effectiveness than Simple Randomized Pulse Width Modulation (SRPWM) in reducing conducted Electro-Magnetic Interferences (EMI) in power converters. ...

    • ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE 

      Autor: Onderová , Iveta; Šooš , Lubomír
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The quality of cutting machines is affected by several factors that can be directly or indirectly influenced by manufacturers, technicians and users of machine tools. The most critical qualitative evaluation parameters of ...