Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 827-846 z 880

    • THE USE OF DEM SIMULATION FOR CONFIRMING THE PROCESS OF PARTICULATE MATERIAL MIXING 

      Autor: Peciar , Peter; Macho , Oliver; Fekete , Roman; Peciar , Marián
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      At the present time in the research of particulate materials, computer methods that work independently with individual particles are coming to the forefront. One such method is the Discrete Element Method – DEM, which is ...

    • THE USE OF THE TWO-HANDED COLLABORATIVE ROBOT IN NON-COLLABORATIVE APPLICATION 

      Autor: Vocetka , Michal; Suder , Jiří; Huczala , Daniel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The article deals with possibilities of using of a two-handed collaborative robot in automated production. The introductory part of this paper is about robot manufacturers’ proposed ways of use of collaborative robots and ...

    • Theoretical analysis of the influence of the chevron inclination angle on the thermal performance of a gasket plate heat exchanger 

      Autor: Nogueira, Élcio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Different models are applied for an experimental and theoretical determination of the thermal and hydraulic performance of gasket plate heat exchanger. One of the relevant aspects of recent works is the influence of the ...

    • Theoretical and experimental study of water vapour condensation with high content of non-condensable gas in a vertical tube 

      Autor: Krempaský, Jakub; Havlík, Jan; Dlouhý, Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This article deals with the possibility of separating water vapour from flue gases after oxyfuel combustion using condensation processes. Those processes can generally be described as condensation of water vapour in the ...

    • THERMAL AND CHEMICAL EVOLUTIONS OF GALAXY CLUSTERS OBSERVED WITH SUZAKU 

      Autor: Sato, Kosuke; Matsushita, Kyoko; Ishisaki, Yoshitaka; Yamasaki, Noriko Y.; Ohashi, Takaya
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We studied the properties of the intracluster medium (ICM) of galaxy clusters to outer regions observed with Suzaku. The observed temperature dropped by about ~30% from the central region to the virial radius of the clusters. ...

    • THERMOCHEMICAL CALCULATIONS USING SERVICEORIENTED ARCHITECTURE IN THE WEB SERVICE FORM 

      Autor: Horovčák , Pavel; Terpák , Ján
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The subject of this article is the service-oriented architecture utilization in the design and implementation of a web service that is intended to perform selected thermochemical calculations for chemical reactions. Computing ...

    • Thomson Parabola Spectrometer for Energetic Ions Emitted from Sub-ns Laser Generated Plasmas 

      Autor: Cutroneo , Mariapompea; Torrisi , Lorenzo; Ando’ , Lucio; Cavallaro , Salvatore; Ullschmied , Jiri; Krasa , Josef; Margarone , Daniele; Velyhan , Andreji; Pfeifer , Miroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Laser-generated plasmas were obtained in high vacuum by irradiating micrometric thin films (Au, Au/Mylar, Mylar) with the Asterix laser at the PALS Research Infrastructure in Prague. Irradiations at the fundamental wavelength, ...

    • THREE-VARIABLE ALTERNATING TRIGONOMETRIC FUNCTIONS AND CORRESPONDING FOURIER TRANSFORMS 

      Autor: Bezubik , Agata; Pošta , Severin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      The common trigonometric functions admit generalizations to any higher dimension, the symmetric, antisymmetric and alternating ones. In this paper, we restrict ourselves to three dimensional generalization only, focusing ...

    • Time-dependent mass oscillators: constants of motion and semiclasical states 

      Autor: Zelaya, Kevin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This work reports the construction of constants of motion for a family of time-dependent mass oscillators, achieved by implementing the formalism of form-preserving point transformations. The latter allows obtaining a ...

    • Time-dependent step-like potential with a freezable bound state in the continuum 

      Autor: Gutiérrez Altamirano, Izamar; Contreras-Astorga, Alonso; Raya Montaño , Alfredo
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      In this work, we construct a time-dependent step-like potential supporting a normalizable state with energy embedded in the continuum. The potential is allowed to evolve until a stopping time ti, where it becomes static. ...

    • TNL: NUMERICAL LIBRARY FOR MODERN PARALLEL ARCHITECTURES 

      Autor: Oberhuber, Tomáš; Klinkovský, Jakub; Fučík, Radek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      We present Template Numerical Library (TNL, www.tnl-project.org) with native support of modern parallel architectures like multi–core CPUs and GPUs. The library offers an abstract layer for accessing these architectures ...

    • TOWARDS EVOLUTIONARY DESIGN OF COMPLEX SYSTEMS INSPIRED BY NATURE 

      Autor: Vítku , Jaroslav; Nahodil , Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper presents first steps towards evolutionary design of complex autonomous systems. The approach is inspired in modularity of human brain and principles of evolution. Rather than evolving neural networks or neural-based ...

    • TRACK GAUGE STABILITY UNDER EFFECT OF SLEEPER THERMAL EXPANSION 

      Autor: Lojda , Vít; Krejčiříková , Hana
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Railway sleepers are traditionally made of hardwood, pre-stressed concrete or steel. However, emerging advanced materials, including polymers or composites, are investigated for a possible employment in the sleeper production. ...

    • TRACKING DOWN LOCALIZED MODES IN PT-SYMMETRIC HAMILTONIANS UNDER THE INFLUENCE OF A COMPETING NONLINEARITY 

      Autor: Bagchi , Bijan; Modak , Subhrajit; Panigrahi K., Prasanta
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The relevance of parity and time reversal (PT)-symmetric structures in optical systems has been known for some time with the correspondence existing between the Schrödinger equation and the paraxial equation of diffraction, ...

    • TRANSITION METAL OXIDES AS MATERIALS FOR ADDITIVE LASER MARKING ON STAINLESS STEEL 

      Autor: Mihalev Stoyanov, Mihail
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      The product information plays an important role in the improvement of the manufacturing, allowing the tracking of the part through the full life cycle. Laser marking is one of the most versatile techniques for this purpose. ...

    • Transonic Flow of Wet Steam — Numerical Simulation 

      Autor: Halama , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The paper presents a numerical simulation of the transonic flow of steam with a non-equilibrium phase change. The flow of steam is approximated by a mixture model complemented by transport equations for moments. Proper ...

    • TREATMENT OF NATURAL GAS BY ADSORPTION OF CO2 

      Autor: Hádková , Kristýna; Tekáč , Viktor; Ciahotný , Karel; Beňo , Zdeněk; Vrbová , Veronika
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Apart from burning, one of the possible uses of natural gas is as a fuel for motor vehicles. There are two types of fuel from natural gas — CNG (Compressed Natural Gas) or LNG (Liquefied Natural Gas). Liquefaction of natural ...

    • TRIAXIAL COMPRESSIVE STRENGTH OF ULTRA HIGH PERFORMANCE CONCRETE 

      Autor: Sovják , Radoslav; Vogel , Filip; Beckmann , Birgit
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The aim of this work is to describe the strength of Ultra High Performance Concrete (UHPC) under triaxial compression. The main goal is to find a trend in the triaxial compressive strength development under various values ...

    • TUNNEL PORTAL INSTABILITY IN LANDSLIDE AREA AND REMEDIAL SOLUTION: A CASE STUDY 

      Autor: Farhadi Ayoublou , Farhad; Taromi , Majid; Eftekhari , Abbas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The construction of tunnel portals in mountainous or slope areas often involves problems, which are closely related to factors, such as slope topography, geology, geotechnics, construction geometry and the tunnel excavation ...

    • TWO-DIMENSIONAL HYBRIDS WITH MIXED BOUNDARY VALUE PROBLEMS 

      Autor: Szajewska , Marzena; Tereszkiewicz , Agnieszka
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      Boundary value problems are considered on a simplex F in the real Euclidean space R2. The recent discovery of new families of special functions, orthogonal on F, makes it possible to consider not only the Dirichlet or ...