Prohlížení ČVUT - elektronické publikace dle názvu

Zobrazují se záznamy 1875-1894 z 1904

    • WAAM TECHNOLOGY OPTIMIZED BY OFF-LINE 3D ROBOT SIMULATION 

      Autor: Gurčík, Tomáš; Kovanda, Karel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      WAAM (Wire + Arc Additive Manufacturing) is an alternative additive technology that combines an electric arc as a heat source, filler material in the form of a wire for welding and cladding individual weld passes so as to ...

    • WANG TILE SIZE IN TERMS OF CIRCULAR PARTICLE DYNAMICS 

      Autor: Šedlbauer, David
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      The main advantage of the Wang tiling concept for material engineering is ability to create large material domains with a relatively small set of tiles. Such idea allows both a reduction of computational demands and ...

    • WANG TILES LOCAL TILINGS CREATED BY MERGING EDGE-COMPATIBLE FINITE ELEMENT MESHES 

      Autor: Zrůbek, Lukáš; Kučerová, Anna; Doškář, Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      In this contribution, we present the concept of Wang Tiles as a surrogate of the periodic unit cell method (PUC) for modelling of materials with heterogeneous microstructures and for synthesis of micro-mechanical fields. ...

    • WATER ABSORPTION CAPACITY COEFFICIENT AND MASS MOISTURE OF RAMMED EARTH MATERIAL 

      Autor: Mužíková, Barbora; Otcovská, Tereza; Padevět, Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      This article presents the development of mass moisture of rammed earth material and determines the water absorption capacity coefficient for rammed earth with illite-kaoline clay. Specimens of two prescriptions were rammed ...

    • Water-air ejector with conical-cylindrical mixing chamber 

      Autor: Sliusenko, Andrii; Ponomarenko, Vitalii; Forostiuk, Inna
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      In the paper, the hydrodynamics of the liquid-gas mixture in the mixing chamber of the ejectors at different spatial positions was analyzed and the comparative study of such ejectors was carried out. It was found that a ...

    • Weakly Ordered A-Commutative Partial Groups of Linear Operators Densely Defined on Hilbert Space 

      Autor: Janda , Jirí
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The notion of a generalized effect algebra is presented as a generalization of effect algebra for an algebraic description of the structure of the set of all positive linear operators densely defined on a Hilbert space ...

    • WEAR BEHAVIOUR OF VANES FOR A ROTARY VANE EXPANDER WITH VARIOUS GRAPHITE MATERIALS UNDER DRY SLIDING CONDITIONS 

      Autor: Vodička , Václav; Novotný , Václav; Mascuch , Jakub
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      This study presents tribological properties of various graphite materials of vanes for rotary vane expanders. A test device was developed in order to measure the wear and power dissipation under conditions similar to a ...

    • WELDING OF NITINOL BY SELECTED TECHNOLOGIES 

      Autor: Kramár , Tomáš; Tauer , Jan; Vondrouš , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Nitinol is a perspective alloy that is difficult to weld because of its high sensitivity to heat, atmospheric gases and the NiTi phase instability. We evaluated several welding techniques with regard to their applicability ...

    • WHAT IS NEW IN ASTROPARTICLE PHYSICS 

      Autor: Giovannelli, Franco
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In this brief review paper I will point to the most important steps that have been made in recent decades toward a better understanding of the physics governing our Universe. Because of the limited length of this paper, I ...

    • What Powers the 2006 Outburst of the Symbiotic Star BF Cygni? 

      Autor: Skopal, A.; Sekeráš, M.; Tomov, N. A.; Tomova, M. T.; Tarasova, T. N.; Wolf, M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      BF Cygni is a classical symbiotic binary. Its optical light curve occasionally shows outbursts of the Z And-type, whose nature is not well understood. During the 2006 August, BF Cyg underwent the recent outburst, and ...

    • When a Nova Becomes Old 

      Autor: Ederoclite, A.; Tappert, C.; Schmidtobreick, L.; Vogt, N.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Here we present the preliminary results of a project aimed at unveiling the nature of classical novae decades after their eruption. The ultimate goal of this project is to describe the population of cataclysmic variables ...

    • WHICH FANS ARE THE BIGGEST ACCELERATION OF THE GRANDSTAND? 

      Autor: Verner, Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The fans of AC Sparta Prague and SK Slavie Prague have been arguing about the fact whose fans support their team better since the end of 20th century. There have been made many experiments on the intensity of vibrations ...

    • White Dwarfs in Cataclysmic Variables: An Update 

      Autor: Sion, E. M.; Godon, P.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      In this review, we summarize what is currently known about the surface temperatures of accreting white dwarfs in nonmagnetic and magnetic cataclysmic variables (CVs) based upon synthetic spectral analyses of far ultraviolet ...

    • Who Discovered the Hoyle Level? 

      Autor: Shaviv, G.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The prediction of Hoyle that the nucleus of 12C must have a resonance at 7.62MeV was the trigger to the Anthropic Principle. We review the history of the discovery of this level and investigate to what extent this was a ...

    • Why a New Code for Novae Evolution and Mass Transfer in Binaries? 

      Autor: Shaviv, G.; Idan, I.; Shaviv, N. J.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      One of the most interesting problems in Cataclysmic Variables is the long time scale evolution. This problem appears in long time evolution, which is also very important in the search for the progenitor of SN Ia. The ...

    • WHY MONITOR ACOUSTIC EMISSIONS DURING NANOMECHANICAL TESTS? 

      Autor: Čtvrtlík, Radim; Václavek, Lukáš; Tomáštík, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Acoustic Emissions (AE) monitoring has been proved as an effective non-destructive technique at the macro scale. Nevertheless, it may also be employed at nano/micro scale during nanomechanical and nanotribological testing. ...

    • Workshop on The Golden Age of Cataclysmic Variables and Related Objects - II . 

      Autor: Foreword, Editorial,
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Organizing Institutions:INAF – Istituto di Astrofisica e Planetologia Spaziali, Roma – INAF-IAPS, Roma, ItalyINTA – Dpt. de Cargas Utiles y Ciencias del Espacio, INTA-DCUCE, Madrid, SpainCzech Republic Academy of Sciences ...

    • X-COPTER STUDIO 

      Autor: Koutný, Michal; Pilát, Ondrej; Černý, Patrik; Kasinec, Maroš; Barták, Roman
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      We present a project that aggregates various existing robotic software and serves as a platform to conveniently control a quadrocopter, mainly for research or educational purposes. User interface runs in a browser and other ...

    • X-Ray and Near-Infrared Spectroscopy of Dim X-Ray Point Sources Constituting the Galactic Ridge X-Ray Emission 

      Autor: Morihana, Kumiko; Tsujimoto, Masahiro; Ebisawa, Ken
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We present the results of X-ray and Near-Infrared observations of the Galactic Ridge X-ray Emission (GRXE). We extracted 2,002 X-ray point sources in the Chandra Bulge Field (l =0°.113, b = 1°.424) down to ~10-14.8 ergscm-2s-1 ...

    • X-RAY MICRO-TOMOGRAPHY CHARACTERIZATION OF VOIDS CAUSED BY THREE-POINT BENDING IN SELECTED ALKALI-ACTIVATED ALUMINOSILICATE COMPOSITE 

      Autor: Kumpová, Ivana; Rozsypalová, Iva; Keršner, Zbyněk; Rovnaníková, Pavla; Vopálenský, Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper deals with the pilot characterization of a special alkali-activated aluminosilicate composite composed of waste brick powder, brick rubble and a solution of potassium water glass. Fracture tests were conducted ...