Vydavatel: ČVUT

Redakce: Ústřední knihovna ČVUT

Časopis Acta Polytechnica vychází v režimu otevřeného přístupu a je publikován na platformě Open Journal Systems. Vychází šest čísel ročně, články jsou publikovány výhradně v anglickém jazyce. Článkům časopisu je od č. 5, roč. 52 (2013) přidělován identifikátor DOI (digital object identifier).

zařazen ve: Scopus (od roč. 51/2011), Directory of Open Access Journals (DOAJ)

ISSN 1210-2709 (print), ISSN 1805-2363 (online)

web časopisu: Acta Polytechnica

Podkomunita v komunitě

Poslední příspěvky

  • NONUNITARY TRANSFORMATION OF QUANTUM TIMEDEPENDENT NONHERMITIAN SYSTEMS 

    Autor: Maamache , Mustapha
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    We provide a new perspective on non-Hermitian evolution in quantum mechanics by emphasizing the same method as in the Hermitian quantum evolution. We first give a precise description of the non unitary transformation  and ...
  • STRENGHT AND DYNAMIC ANALYSIS OF A STRUCTURAL NODE LIMITING THE MULTIOUTPUT GEAR MECHANISM 

    Autor: Kačalová , Mária; Pavlenko , Slavko
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    The rapidly advancing technological development leads to designing and researching a new multi- output gear mechanism. The investigated new double-output gear mechanism has two output coaxial shafts located against the ...
  • FURTHER GENERALISATIONS OF THE KUMMERSCHWARZ EQUATION: ALGEBRAIC AND SINGULARITY PROPERTIES 

    Autor: Sinuvasan , R; Krishnakumar , K; Tamizhmani , K M; Leach , PGL
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    The Kummer–Schwarz Equation, 2y'y'''− 3(y'')2 = 0, has a generalisation, (n − 1)y(n−2)y(n) − ny(n−1)2 = 0, which shares many properties with the parent form in terms of symmetry and singularity. All equations of the class ...
  • NEW SPECTRAL STATISTICS FOR ENSEMBLES OF 2 × 2 REAL SYMMETRIC RANDOM MATRICES 

    Autor: Kumar , Sachin
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    We investigate spacing statistics for ensembles of various real random matrices where the matrix-elements have various Probability Distribution Function (PDF: f(x)) including Gaussian. For two modifications of 2 × 2 matrices ...
  • NUMERICAL CALCULATION OF THE COMPLEX BERRY PHASE IN NONHERMITIAN SYSTEMS 

    Autor: Wagner , Marcel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    We numerically investigate topological phases of periodic lattice systems in tight-binding description under the influence of dissipation. The effects of dissipation are effectively described by PT-symmetric potentials. ...
  • GENERATION OF TRANSPORT PATHS IN FRACTURED POROUS MEDIA 

    Autor: Říha , Jakub; Královcová , Jiřina
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    In this article, a method for generation of transport paths in combined equivalent porous media / discrete fracture network computational meshes is proposed as an alternative to a particle tracking method. It is based on ...
  • ALGEBRAIC DESCRIPTION OF SHAPE INVARIANCE REVISITED 

    Autor: Ohya , Satoshi
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    We revisit the algebraic description of shape invariance method in one-dimensional quantum mechanics. In this note we focus on four particular examples: the Kepler problem in flat space, the Kepler problem in spherical ...
  • On the spectrum of the onedimensional Schrodinger Hamiltonian perturbed by an attractive Gaussian potential 

    Autor: Fassari , S.; Gadella , M.; Rinaldi , F.; Nieto M., L.
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    We propose a new approach to the problem of nding the eigenvalues (energy levels)
  • PLATFORM WITH CAMERA SYSTEM FOR MEASUREMENT OF COMPENSATORY MOVEMENTS OF SMALL ANIMALS 

    Autor: Kutílek , Patrik; Škoda , David; Hýbl , Ján; Černý , Rudolf; Frynta , Daniel; Landová , Eva; Frýdlová , Petra; Kurali , Aniko; Doskočil , Radek; Křivánek , Václav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    The article introduces systems and methods of a controllable rotational platform used for measuring compensatory movement of small animals. The system, based on a camera subsystem, is located on a mechanical platform powered ...
  • A METHOD FOR EVALUATION OF NONUNIFORM RADIANTCONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK 

    Autor: Prokšová Zuská , Lenka; Kabrhel , Michal
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    The objective of this study was to develop a documentation for the amendment of the microclimatic part of the Czech Government Regulation, particularly in a non-uniform radiant-convective load evaluation. Changes in ...
  • UNDERGROUND AIR DUCT TO CONTROL RISING MOISTURE IN HISTORIC BUILDINGS: IMPROVED DESIGN AND ITS DRYING EFFICIENCY 

    Autor: Pazderka , Jiří; Hájková , Eva; Jiránek , Martin
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    The underground air ducts along peripheral walls of a building are a remediation method, which principle is to enable an air flow along the moist building structure’s surface to allow a sufficient evaporation of moisture ...
  • CONTRAROTATING PROPELLER AERODYNAMICS SOLVED BY A 3D PANEL METHOD WITH COUPLED BOUNDARY LAYER 

    Autor: Štorch , Vít; Nožička , Jiří
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    The aerodynamics of contra-rotating propellers is a complex three-dimensional problem of an unsteady flow, which is often approached by assuming numerous simplifications. Presented computational model combines a 3D panel ...
  • ON THE SPECTRUM OF THE ONEDIMENSIONAL 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 ...
  • RELATION BETWEEN LEFT VENTRICULAR UNLOADING DURING ECMO AND DRAINAGE CATHETER SIZE ASSESSED BY MATHEMATICAL MODELING 

    Autor: Strunina , Svitlana; Hozman , Jiri; Ostadal , Petr
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    The flow-dependent left ventricle overload is a well-known complication of the veno-arterial extracorporeal membrane oxygenation in a severe cardiogenic shock, which leads to a distension of the left ventricle and, frequently, ...
  • PARAMETERS EFFECTING FORCED VORTEX FORMATION IN BLADE PASSAGEWAY OF DYNAMIC AIR CLASSIFIER 

    Autor: Adamčík , Martin; Svěrák , Tomáš; Peciar , Peter
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    Air classification of particulate materials is a method of classifying particles into coarse and fine fractions based on their size, density, or shape. Performance of the rotor air classifier is affected by operating ...
  • SIMPLE MODELS OF THREE COUPLED PT SYMMETRIC WAVE GUIDES ALLOWING FOR THIRDORDER EXCEPTIONAL POINTS 

    Autor: Schnabel , Jan; Cartarius , Holger; Main , Jörg; Wunner , Günter; Heiss , Walter Dieter
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    We study theoretical models of three coupled wave guides with a PT-symmetric distribution of gain and loss. A realistic matrix model is developed in terms of a three-mode expansion. By comparing with a previously postulated ...
  • ON SELFSIMILARITIES OF CUTANDPROJECT SETS 

    Autor: Masáková , Zuzana; Mazáč , Jan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    Among the commonly used mathematical models of quasicrystals are Delone sets constructed using a cut-and-project scheme, the so-called cut-and-project sets. A cut-and-project scheme (L,π1, π2) is given by a lattice L in Rs ...
  • HIGHLY ACCURATE CALCULATION OF THE REAL AND COMPLEX EIGENVALUES OF ONEDIMENSIONAL ANHARMONIC OSCILLATORS 

    Autor: Fernández Marcelo, Francisco; Garcia , Javier
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    We draw attention on the fact that the Riccati-Padé method developed some time ago enables the accurate calculation of bound-state eigenvalues as well as of resonances embedded either in the continuum or in the discrete ...
  • THE ANALYSIS OF IMAGES IN NPOINT GRAVITATIONAL LENS BY METHODS OF ALGEBRAIC GEOMETRY 

    Autor: Kotvytskiy , Albert; Bronza , Semen; Shablenko , Vladimir
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    This paper is devoted to the study of images in N-point gravitational lenses by methods of algebraic geometry. In the beginning, we carefully define images in algebraic terms. Based on the definition, we show that in this ...
  • RATIONALLY EXTENDED SHAPE INVARIANT POTENTIALS IN ARBITRARY D DIMENSIONS ASSOCIATED WITH EXCEPTIONAL Xm POLYNOMIALS 

    Autor: Yadav Kumar, Rajesh; Kumari , Nisha; Khare , Avinash; Mandal Prasad, Bhabani
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
    Rationally extended shape invariant potentials in arbitrary D-dimensions are obtained by using point canonical transformation (PCT) method. The bound-state solutions of these exactly solvable potentials can be written in ...

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