Zobrazují se záznamy 1305-1324 z 2019

    • ON THE SECOND LIGHT FLASH EMITTED FROM A SPARK-GENERATED BUBBLE OSCILLATING IN WATER 

      Autor: Vokurka , Karel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The light emitted from the spark-generated bubbles oscillating in water is studied experimentally. Attention is paid to the emission of light from bubbles in the final stages of their first contraction and in the early ...
    • ON THE SENSITIVITY OF THE NONLINEAR TERM IN THE OUTFLOW BOUNDARY CONDITION 

      Autor: Neustupa , Tomáš; Winter , Ondřej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      This paper studies the artificial outflow boundary condition for the Navier-Stokes system. This type of condition is widely used and it is therefore very important to study its influence on a numerical solution of the ...
    • On the Solvability of Some Partial Differential Inequality 

      Autor: Himmel , Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The Dulac criterion is a classical method for ruling out the existence of periodic solutions in planar differential equations. In this paper the applicability and therefore reversibility of this criterionis under consideration.
    • ON THE SPECTRUM OF THE ONE-DIMENSIONAL SCHRÖDINGER HAMILTONIAN PERTURBED BY AN ATTRACTIVE GAUSSIAN POTENTIAL 

      Autor: Fassari , Silvestro; Gadella , Manuel; Nieto Miguel, Luis; Rinaldi , Fabio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      We propose a new approach to the problem of finding the eigenvalues (energy levels) in the discrete spectrum of the one-dimensional Hamiltonian with an attractive Gaussian potential by using the well-known Birman-Schwinger ...
    • ON THE SPEED OF SOUND IN STEAM 

      Autor: Šafarík , Pavel; Nový , Adam; Jícha , David; Hajšman , Miroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      A study of the speed of sound in a pure water substance is presented here. The IAPWS data on the state of water and steam are applied only for investigating the speed of sound for a one-phase medium. A special numerical ...
    • ON THE THREE-DIMENSIONAL PAULI EQUATION IN NONCOMMUTATIVE PHASE-SPACE 

      Autor: Haouam, Ilyas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      In this paper, we obtained the three-dimensional Pauli equation for a spin-1/2 particle in the presence of an electromagnetic field in a noncommutative phase-space as well as the corresponding deformed continuity equation, ...
    • On the treatment of measurement uncertainty in stochastic modeling of basic variables 

      Autor: Küttenbaum, Stefan; Maack, Stefan; Taffe, Alexander; Braml, Thomas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The acquisition and appropriate processing of relevant information about the considered system remains a major challenge in assessment of existing structures. Both the values and the validity of computed results such as ...
    • ON THE USE OF A FLUX-SPLITTING SCHEME IN THE NUMERICAL FLUTTER ANALYSIS OF A LOW-PRESSURE TURBINE STAGE 

      Autor: Pátý, Marek; Halama, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The endeavour to increase the power output of steam turbines results in the design of low-pressure stages with large diameters. Such designs, featuring long and thin blades, are increasingly susceptible to unfavourable ...
    • On the vortex identification within a linear blade cascade - an experimental research 

      Autor: Flídr, Erik
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)
      This paper deals with the identification of the individual vortical structures within a linear blade cascade based on H criteria. The experimental data obtained from the pressure measurement at the cascade outlet were ...
    • On the Wess-Zumino Model: a supersymmetric field theory 

      Autor: Kulshreshtha, Daya Shankar; Kulshreshtha, Usha
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      We consider the free massless Wess-Zumino Model in 4D which describes a supersymmetric field theory that is invariant under the rigid or global supersymmetry transformations where the transformation parameter ϵ (or ϵ ) ...
    • ON TRAVERSABILITY COST EVALUATION FROM PROPRIOCEPTIVE SENSING FOR A CRAWLING ROBOT 

      Autor: Mrva, Jakub; Stejskal, Martin; Faigl, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Traversability characteristics of the robot working environment are crucial in planning an efficient path for a robot operating in rough unstructured areas. In the literature, approaches to wheeled or tracked robots can ...
    • ON TUNING THE DYNAMIC LOAD BALANCING FEM FRAMEWORK 

      Autor: Bošanský, Michal; Patzák, Bořek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Developments in computer hardware are currently bringing new opportunities for numerical modelling. The current trend in technology is parallel processing making use of multiple processing units simultaneously to solve a ...
    • ON TWO WAYS TO LOOK FOR MUTUALLY UNBIASED BASES 

      Autor: Kibler R., Maurice
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Two equivalent ways of looking for mutually unbiased bases are discussed in this note. The passage from the search for d+1 mutually unbiased bases in Cd to the search for d(d+1) vectors in Cd2 satisfying constraint relations ...
    • OOFEM — an Object-oriented Simulation Tool for Advanced Modeling of Materials and Structures 

      Autor: Patzák , Bořek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The aim of this paper is to describe the object-oriented design of the finite element based simulation code. The overall, object-oriented structure is described, and the role of the fundamental classes is discussed. The ...
    • OPERA HIGHLIGHTS 

      Autor: Strauss, Thomas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The OPERA experiment is a long baseline neutrino oscillation  experiment aimed at observing the νμ → ντ neutrino oscillation in the CERN neutrino to Gran Sasso beamline in the appearance mode by detecting the τ-decay. Here ...
    • OPERATING SPECIFICATIONS OF CATALYTIC CLEANING OF GAS FROM BIOMASS GASIFICATION 

      Autor: Lisý , Martin; Baláš , Marek; Špiláček , Michal; Skála , Zdeněk
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The paper focuses on the theoretical description of the cleaning of syngas from biomass and waste gasification using catalytic methods, and on the verification of the theory through experiments. The main obstruction to ...
    • OPERATION MODES AND CHARACTERISTICS OF PLASMA DIPOLE ANTENNA 

      Autor: Bogachev Nikolaevich, Nikolay; Bogdankevich , Irina L.; Gusein-Zade , Namik G.; Sergeychev , Konstantin F.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Existence modes of  surface electromagnetic wave on a plasma cylinder, operating modes and characteristics of the plasma antenna were studied in this paper. Solutions of the dispersion equation of surface wave were obtained ...
    • Operational energy and embodied impacts of retrofitting the window frames of mixed-mode office buildings 

      Autor: Gravia Pimenta, Rafaela; de Oliveira Neves, Leticia; Gomes , Vanessa
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Design decisions normally consider the building's operational phase as the main criterion to reduce energy expenses in a building. In less efficient buildings, reducing the operational energy becomes the most important ...
    • Optical Low Resolution Spectroscopic Observations of T Pyx during the Early Phase of 2011 Outburst 

      Autor: Arai, A.; Isogai, M.; Yamanaka, M.; Akitaya, H.; Uemura, M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      We report on the results of our low resolution spectroscopic observations during the 2011 outburst of the recurrent nova T Pyx. Our observations were performed from 0.19 days to 34 days after the eruption discovered by M. ...
    • Optical Photometry of LMXBs: UW CrB (=MS 1603+260) and V1408 Aql (=4U 1957+115) 

      Autor: Mason, P. A.; Robinson, E. L.; Gomez, S.; Segura, J. V.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      We present new optical observations of V1408 Aql (= 4U 1957+115), the only low mass X-ray binary, black hole candidate known to be in a persistently soft state. We combine new broadband optical photometry with previously ...