Now showing items 1217-1236 of 1838

  • On a Class of Functional Differential Equations with Symmetries 

    Dilna, Nataliya; Fečkan, Michal; Rontó, András (MDPI, 2019-11-27)
    It is shown that a class of symmetric solutions of scalar non-linear functional differential equations can be investigated by using the theory of boundary value problems. We reduce the question to a two-point boundary value ...
  • On a close to symmetric system of difference equations of second order 

    Stevič, Stevo; Iričanin, Bratislav; Šmarda, Zdeněk (Springer Nature, 2015-12-29)
    Closed form formulas of the solutions to the system of difference equations of the second order are found. The domain of undefinable solutions to the system is described.
  • On a delay population model with quadratic nonlinearity 

    Berezansky, Leonid; Baštinec, Jaromír; Diblík, Josef; Šmarda, Zdeněk (Springer Nature, 2012-12-28)
    In this paper, a nonlinear delay differential equation with quadratic nonlinearity is investigated. It is proved that the positive equilibrium is globally asymptotically stable without any further limitations on parameters ...
  • On a product of universal hyperalgebras 

    Šlapal, Josef; Chaisansuk, Nitima (Faculty of Mathematics and Computer Science, Ovidius University, 2015-05-15)
    We introduce and study a new operation of product of universal hyperalgebras which lies, with respect to set inclusion, between the cartesian product of the hyperalgebras and the cartesian product of their idempotent hulls. ...
  • On a product-type system of difference equations of second order solvable in closed form 

    Stevič, Stevo; Iričanin, Bratislav; Šmarda, Zdeněk (BioMed Central, 2015-10-12)
    Sufficient conditions for solving a system of difference equations of second order in closed form are given. Moreover, sufficient conditions for existence of periodic solutions and asymptotic stability of solutions are ...
  • On adaptive refinements in discrete probabilistic fracture models 

    Eliáš, Jan (Gruppo Italiano Frattura, 2017-01-01)
    The possibility to adaptively change discretization density is a well acknowledged and used feature of many continuum models. It is employed to save computational time and increase solution accuracy. Recently, adaptivity ...
  • On Construction of Solutions of Linear Differential Systems with Argument Deviations of Mixed Type 

    Rontó, András; Rontóová, Natálie (2020-10-21)
    We show the use of parametrization techniques and successive approximations for the effective construction of solutions of linear boundary value problems for differential systems with multiple argument deviations. The ...
  • On elliptic curves with a closed component passing through a hexagon 

    Kureš, Miroslav (Ovidius University, 2019-06-01)
    In general, there exists an ellipse passing through the vertices of a convex pentagon, but there is no ellipse passing through the vertices of a convex hexagon. Thus, attention is turned to algebraic curves of the third ...
  • On Minimisation of Earthing System Touch Voltages 

    Vyčítal, Václav; Ptáček, Michal; Topolánek, David; Toman, Petr (MDPI, 2019-10-11)
    Finding cost efficient earthing system design with acceptable level of safety might be quite tedious work. Thus, many earthing system engineers try to find the most suitable design either by employing only their best ...
  • On Orthogonal Projections for Dimension Reduction and Applications in Augmented Target Loss Functions for Learning Problems 

    Harár, Pavol (Springer, 2019-10-23)
    The use of orthogonal projections on high-dimensional input and target data in learning frameworks is studied. First, we investigate the relations between two standard objectives in dimension reduction, preservation of ...
  • On registration of vector maps with known correspondences 

    Jelínek, Aleš (IEEE, 2018-05-21)
    Data association and registration is an important and actively researched topic in robotics. This paper deals with registration of two sets of line segments, which is especially useful in mapping applications. ...
  • On registration of vector maps with known correspondences 

    Jelínek, Aleš; Ligocki, Adam (VSB-Technical University of Ostrava, 2019-09-01)
    Data association and registration is an important and actively researched topic in robotics. This paper deals with registration of two sets of line segments, which is especially useful in mapping applications. Our method ...
  • On Resistance and Inductance of Solid Conductors 

    Coufal, Oldřich (Hindawi, 2013-03-20)
    The concepts of resistance and inductance are strewn with misunderstanding and errors that result from inaccurate terminology, mistakes in their definitions, and from the fact that they are quantities that characterize elements ...
  • On stochastic inlet boundary condition for unsteady simulations 

    Niedoba, Pavel; Jícha, Miroslav; Čermák, Libor (EDP Sciences, 2013-11-19)
    The paper deals with the stochastic generation of synthesized turbulence, which may be used for a generating of an inlet boundary condition for unsteady simulations, e.g. Direct Numerical Simulation (DNS) or Large Eddy ...
  • On Taylor Series Expansion for Statistical Moments of Functions of Correlated Random Variables dagger 

    Novák, Lukáš; Novák, Drahomír (MDPI, 2020-08-31)
    The paper is focused on Taylor series expansion for statistical analysis of functions of random variables with special attention to correlated input random variables. It is shown that the standard approach leads to significant ...
  • On the connection between mode II and mode III effective thresholds in metals 

    Vojtek, Tomáš; Žák, Stanislav; Pokluda, Jaroslav (Italian Group of Fracture, 2017-07-01)
    Closure-free long cracks under the remote mode III loading grow in a more complicated way than those under the remote mode II. For bcc metals, a coplanar in-plane spreading of tongues driven by the local mode II loading ...
  • On the Dependence of Rheology of Hyaluronic Acid Solutions and Frictional Behavior of Articular Cartilage 

    Rebenda, David; Vrbka, Martin; Čípek, Pavel; Toropitsyn, Evgeniy; Nečas, David; Pravda, Martin; Hartl, Martin (MDPI, 2020-06-11)
    Hyaluronic acid (HA) injections represent one of the most common methods for the treatment of osteoarthritis. However, the clinical results of this method are unambiguous mainly because the mechanism of action has not been ...
  • On the effect of addition of carbon nanotubes on the electric conductivity of alkali-activated slag mortars 

    Kusák, Ivo; Luňák, Miroslav (IOP Publishing, 2017-10-18)
    This paper presents basic electric properties of laboratory prepared alkali-activated composite materials on the basis of finely ground granular high furnace slag to which various quantities of carbon nanotubes (CNT) have ...
  • On the Preparation of Advanced Materials via Pulsed Electric Current Sintering Procedures 

    Díaz de la Torre, Sebastian; Čelko, Ladislav; Casas Luna, Mariano; Montufar Jimenez, Edgar Benjamin (Trans Tech Publications, 2017-01-01)
    A general overview on the processing of a series of advanced engineering materials, synthesized via pulsed-electric-current-sintering related techniques, and the similarities in between those techniques are introduced in ...
  • On the Problem of the Imperfections of the Structural Glass Members Made of Flat Glass 

    Pešek, Ondřej; Melcher, Jindřich; Horáček, Martin; Balázs, Ivan (IOP Publishing Ltd., 2019-01-20)
    This paper deals with initial geometrical imperfections of the structural glass members made of flat glass. The design of the load bearing glass structures is relatively common in modern architecture, but there is not an ...