Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 91-110 z 880

    • Analytic and Algebraic Methods in Physics 

      Autor: Khrabustovskii , Andrii; Znojil , Miloslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)

    • ANALYTICAL METHODS FOR CALCULATING FAN AERODYNAMICS 

      Autor: Dostal , Jan; Kuzel , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper presents results obtained between 2010 and 2014 in the field of fan aerodynamics at the Department of Composite Technology at the VZLÚ aerospace research and experimental institute in Prague – Letnany. The need ...

    • ANALYTICAL SOLUTION OF (2+1) DIMENSIONAL DIRAC EQUATION IN TIME-DEPENDENT NONCOMMUTATIVE PHASE-SPACE 

      Autor: Haouam , Ilyas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      In this article, we studied the system of a (2+1) dimensional Dirac equation in a time-dependent noncommutative phase-space. More specifically, we investigated the analytical solution of the corresponding system by the ...

    • Angular Distribution of GRBs 

      Autor: Balázs , L. G.; Mészáros , A.; Horváth , I.; Bagoly , Z.; Veres , P.; Tusnády , G.
      (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, ...

    • ANNEALING OF POLYCRYSTALLINE THIN FILM SILICON SOLAR CELLS IN WATER VAPOUR AT SUB-ATMOSPHERIC PRESSURES 

      Autor: Pikna , Peter; Píč , Vlastimil; Benda , Vítězslav; Fejfar , Antonín
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Thin film polycrystalline silicon (poly-Si) solar cells were annealed in water vapour at pressures below atmospheric pressure. PN junction of the sample was contacted by measuring probes directly in the pressure chamber ...

    • Antipalindromic numbers 

      Autor: Dvořáková, Ľubomíra; Kruml, Stanislav; Ryzák, David
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      Everybody has certainly heard about palindromes: words that stay the same when read backwards. For instance, kayak, radar, or rotor. Mathematicians are interested in palindromic numbers: positive integers whose expansion ...

    • APPLICABILITY OF CARBON FIBRES IN REFRACTORY CEMENT COMPOSITES 

      Autor: Holčapek , Ondřej; Reiterman , Pavel; Konvalinka , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The main objective of this article is to present the influence of high temperatures on mechanical properties of advanced refractory cement composite reinforced with carbon fibres. The presented material is suitable for ...

    • Applicability of Secondary Denitrification Measures on a Fluidized Bed Boiler 

      Autor: Jeníková, Jitka; Michaliková, Kristýna; Hrdlička, František; Hrdlička, Jan; Pilař, Lukáš; Vodička, Matěj; Skopec, Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This article compares performance of selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) applied on the same pilot unit, a 500 kW fluidized bed boiler burning Czech lignite. Correlation of the ...

    • APPLICABILITY VERIFICATION OF AUTOFORM SOFTWARE FOR FEM SIMULATION OF MECHANICAL FIXATION OF HEMMED JOINTS 

      Autor: Chrášťanský , Lukáš; Šanovec , Jan; Martawirya , Yatna Yuwana; Valeš , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper deals with the problematics of fixation of hemmed joints, especially with one specific mechanical method how to ensure a dimensional stability of a hemmed joint of car-body parts, such as doors, bonnet and trunk ...

    • Application of additional insulation to ETICS on surfaces with biocorrosion 

      Autor: Antošová, Naďa; Šťastný, Patrik; Petro, Marek; Krištofič, Štefan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The paper presents partial outputs from an experiment that demonstrated the impact of applying an additional insulation on an existing contact insulation system with a green-algae surface. The aim was mainly to detect the ...

    • APPLICATION OF ADVANCED COMBUSTION MODELS IN INTERNAL COMBUSTION ENGINES BASED ON 3-D CFD LES APPROACH 

      Autor: Vítek, Oldřich; Macek, Jan; Doleček, Vít; Syrovátka, Zbyněk; Pavlovic, Zoran; Priesching, Peter; Tap, Ferry
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      This paper deals with the application of advanced simulation techniques for combustion modeling in the case of an internal combustion engine. The main focus is put on models with a high predictive ability hence 3-D CFD was ...

    • Application of an artificial intelligence segmentation for deep hyperthermia treatment planning in the pelvic region 

      Autor: Drizdal, Tomas; Novak, Marek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      During a microwave hyperthermia oncology treatment, the target region temperature is elevated to the temperatures of 40–44 °C, which improves the therapeutic effect of a standard radiotherapy and/or chemotherapy treatments. ...

    • APPLICATION OF CORROSION PLATES IN DRINKING WATER 

      Autor: Skalický , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Drinking water has always been, is and will be a strategic raw material. Stopping corrosion or at least minimisation of its impact while keeping quality drinking water supplies is a big challenge for the future. That is ...

    • APPLICATION OF DIMENSIONAL ANALYSIS IN HEAT LOSS DETERMINING IN DISTRICT HEATING SYSTEMS 

      Autor: Čarnogurská , Mária; Dobáková , Romana; Příhoda , Miroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      Existing procedures for determining the heat loss in heat distribution use balance relations, or rather they are based on the theory of heat and mass transfer. Dimensional analysis enables a new point of view that demonstrated ...

    • APPLICATION OF FMEA METHODOLOGY FOR CHECKING OF CONSTRUCTION’S PROJECT DOCUMENTATION AND DETERMINATION OF THE MOST RISK AREAS 

      Autor: Tuháček , Martin; Franek , Ondřej; Svoboda , Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The article deals with an innovative method designed to check project documentation of buildings at the design stage, specifically exploring the possibility to implement FMEA and PDCA methodologies. Based on performed ...

    • APPLICATION OF GLOBAL OPTIMIZATION TO PREDICT STRAINS IN RC COMPRESSED COLUMNS 

      Autor: Lechman, Marek; Stachurski, Andrzej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      In this paper, the results of an application of global and local optimization methods to solve a problem of determination of strains in RC compressed structure members are presented. Solutions of appropriate sets of nonlinear ...

    • Application of Induction Heating for Brazing Parts of Solar Collectors 

      Autor: Demianová , Kristína; Ožvold , Milan; Turňa , Milan
      (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 ...

    • Application of Portable Force Platforms Equipped with a Device for Measuring Position and Orientation 

      Autor: Kutílek , Patrik; Vítečková , Slávka; Svoboda , Zdeněk; Hejda , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      With the development of modern technology for studying the movements of the human body, a large number of new measurement techniques are being applied. However, a complex and expensive device is not always the best one for ...

    • APPLICATION OF RULED SURFACES IN FREEFORM AND GEAR METROLOGY 

      Autor: Linkeová, Ivana; Zelený, Vít
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      An application of two ruled surfaces (i.e., surfaces generated by a motion of a straight line), a surface of hyperbolic paraboloid and a tangent surface of a cylindrical helix in freeform and gear metrology is introduced ...

    • Application of strut-and-tie models for assessing RC half-joints not complying with current code specifications 

      Autor: Kotsovou, Gregoria; Vougioukas, Emmanouil; Cotsovos, Demetrios M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The work described is concerned with an investigation of the effectiveness of the use of strut-and-tie models for the structural assessment of half joints. Such elements form a part of many existing bridges which, although ...