• IMPROVEMENT OF ENERGY CONSUMPTION IN SPECTRUM SENSING COGNITIVE RADIO NETWORKS USING AN EFFICIENT TWO STAGE SENSING METHOD 

      Autor: Abdullah Najem, Hikmat; Abed Sami, Hadeel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Cognitive radio (CR) is a wireless technology developed to improve the usage in the spectrum frequency. Energy consumption is considered as a big problem in this technology, especially during a spectrum sensing. In this ...
    • JET ENGINE INLET DISTORTION SCREEN AND DESCRIPTOR EVALUATION 

      Autor: Pečinka , Jiří; Bugajski Thomas, Gabriel; Kmoch , Petr; Jílek , Adolf
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Total pressure distortion is one of the three basic flow distortions (total pressure, total temperature and swirl distortion) that might appear at the inlet of a gas turbine engine (GTE) during operation. Different numerical ...
    • LAMBERT FUNCTION METHODs TO STUDY LASER DYNAMICS WITH TIME-DELAYED FEEDBACK 

      Autor: Joglekar N, Yogesh; Vemuri , Gautam; Wilkey , Andrew
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Time-delayed differential equations arise frequently in the study of nonlinear dynamics of lasers with optical feedback and because the analytical solution of such equations can be intractable, one resorts to numerical ...
    • LIE ALGEBRA REPRESENTATIONS AND RIGGED HILBERT SPACES: THE SO(2) CASE 

      Autor: Celeghini , Enrico; Gadella , Manuel; del Olmo A, Mariano
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      It is well known that related with the irreducible representations of the Lie group SO(2) we find a discrete basis as well a continuous one. In this paper we revisited this situation under the light of  Rigged Hilbert ...
    • MODIFICATION OF POWDER MATERIAL BY COMPACTION PROCESSING 

      Autor: Peciar , Peter; Macho , Oliver; Eckert , Maroš; Kabát , Juraj; Gabrišová , Ľudmila; Kotora , Peter; Fekete , Roman; Peciar , Marián
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      There are different criteria for assessing the appropriateness of an agglomeration technology in the deployment processing of dry, fine and dirty dust burdening in the communal and working environment. Besides the benefit ...
    • 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 ...
    • NON-UNITARY TRANSFORMATION OF QUANTUM TIME-DEPENDENT NON-HERMITIAN 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 ...
    • NUMERICAL AND MECHANICAL ANALYSES OF A 3D-PRINTED TITANIUM TRABECULAR DENTAL IMPLANT 

      Autor: Řehounek , Luboš; Jíra , Aleš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      The main focus of this paper is to investigate and describe a novel biomaterial structure. The trabecular structure has only recently been recognized as a viable alternative for prostheses and implants and seems to have ...
    • NUMERICAL CALCULATION OF THE COMPLEX BERRY PHASE IN NON-HERMITIAN 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. ...
    • NUMERICAL MODELLING OF THE SOIL BEHAVIOUR BY USING NEWLY DEVELOPED ADVANCED MATERIAL MODEL 

      Autor: Veselý , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      This paper describes a theoretical background, implementation and validation of the newly developed Jardine plastic hardening-softening model (JPHS model), which can be used for numerical modelling of the soils behaviour. ...
    • ON SELF-SIMILARITIES OF CUT-AND-PROJECT 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 ...
    • ON THE COMMON LIMIT OF THE PT-SYMMETRIC ROSEN–MORSE II AND FINITE SQUARE WELL POTENTIALS 

      Autor: Kovács , József; Lévai , Géza
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Two PT-symmetric potentials are compared, which possess asymptotically finite imaginary components: the PT-symmetric Rosen-Morse II and the finite PT-symmetric square well potentials. Despite their different mathematical ...
    • 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 ...
    • OPTIMIZATION METHOD AND SOFTWARE FOR FUEL COST REDUCTION IN CASE OF ROAD TRANSPORT ACTIVITY 

      Autor: Kovács , György
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      The transport activity is one of the most expensive processes in the supply chain and the fuel cost is the highest cost among the cost components of transportation. The goal of the research is to optimize the transport ...
    • 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 ...
    • 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 ...
    • POSSIBILITY OF MONITORING OF PAHs DISTRIBUTION IN THE VERTICAL PROFILE AT THE BACKGROUND METEOROLOGICAL STATION KREŠÍN RETRACTED 

      Autor: Strnadová , Gabriela; Hanuš , Vlastimil; Kahoun , David; Semerák , Petr; Tříska , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      ARTICLE HAS BEEN RETRACTED BY EDITORIAL OFFICE, UPON AN APPROVAL OF ALL AUTHORSThe contaminants present in the atmosphere have a substantial impact on public health. Among contaminants, the most important are polycyclic ...
    • PRELIMINARY STUDY ON COMBUSTION AND OVERALL PARAMETERS OF SYNGAS FUEL MIXTURES FOR SPARK IGNITION COMBUSTION ENGINE 

      Autor: Toman , Rastislav; Polóni , Marián; Chríbik , Andrej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      This paper presents a numerical study on a group of alternative gaseous fuels – syngases, and their use in the spark-ignition internal combustion engine Lombardini LGW 702. These syngas fuel mixtures consist mainly of ...
    • PROPERTIES AND MICROSTRUCTURE OF CEMENT PASTE INCLUDING RECYCLED CONCRETE POWDER 

      Autor: Topič , Jaroslav; Prošek , Zdenek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      The disposal and further recycling of concrete is being investigated worldwide, because the issue of complete recycling has not yet been fully resolved. A fundamental difficulty faced by researchers is the reuse of the ...
    • 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 ...