Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 819-838 z 880

    • THE SEARCH FOR BLAZARS AMONG THE UNIDENTIFIED EGRET gamma-RAY SOURCES 

      Autor: Meintjes, Pieter J.; Nkundabakura, Pheneas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In this paper we report the results of a multi-wavelength follow-up study of selected flat spectrum extragalactic radio-optical counterparts within the error boxes of 13 unidentified EGRET sources. Two of these previously ...

    • THE SENSITIVITY OF THE GREENHOUSE EFFECT TO CHANGES IN THE CONCENTRATION OF GASES IN PLANETARY ATMOSPHERES 

      Autor: Bressler, Smadar; Shaviv, Giora; Shaviv, Nir J.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We present a radiative transfer model for Earth-Like-Planets (ELP). The model allows the assessment of the effect of a change in the concentration of an atmospheric component, especially a greenhouse gas (GHG), on the ...

    • THE SHMUSHKEVICH METHOD FOR HIGHER SYMMETRY GROUPS OF INTERACTING PARTICLES 

      Autor: Bodner , Mark; Chadzitaskos , Goce; Patera , Jiří; Tereszkiewitz , Agnieszka
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      About 60 years ago, I. Shmushkevich presented a simple ingenious method for computing the relative probabilities of channels involving the same interacting multiplets of particles, without the need to compute the Clebsch-Gordan ...

    • The Simulation of the Influence of Water Remnants on a Hot Rolled Plate after Cooling 

      Autor: Zahradník , Radek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      In situations when a sheet metal plate of large dimensions is rolled, water remnants from cooling can be observed on the upper side of the plate. This paper focuses on deformations of a hot rolled sheet metal plate that ...

    • THE SUGGESTIONS AS TO THE CALCULATION BEARING CAPACITY OF SANDWICH REINFORCED CONCRETE — FOAMED CONCRETE FLOOR SLABS 

      Autor: Lytvyniak , Oksana; Tashak , Myroslava
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This article presents the results of an experimental research of sandwich reinforced concrete-foamed concrete floor slabs. These floor slabs combine three different materials — normal concrete, foamed concrete and a steel ...

    • THE SZ EFFECT IN THE PLANCK ERA: ASTROPHYSICAL AND COSMOLOGICAL IMPACT 

      Autor: Colafrancesco, Sergio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The Sunyaev–Zel’dovich effect (SZE) is a relevant probe for cosmology and particle astrophysics. The Planck Era marks a definite step forward in the use of this probe for astrophysics and cosmology. Astrophysical applications ...

    • THE TIME DIFFERENCE IN EMISSION OF LIGHT AND PRESSURE PULSES FROM OSCILLATING BUBBLES 

      Autor: Vokurka , Karel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Oscillations of spark-generated bubbles are studied experimentally. In this work, an attention is paid to the time difference in the radiation of light flashes and pressure pulses from a bubble at the final stages of the ...

    • The Two-dimensional Harmonic Oscillator on a Noncommutative Space with Minimal Uncertainties 

      Autor: Dey , Sanjib; Fring , Andreas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The two dimensional set of canonical relations giving rise to minimal uncertainties previously constructed from a q-deformed oscillator algebra is further investigated. We provide a representation for this algebra in terms ...

    • 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 ...