Now showing items 1-20 of 692

    • The 2D Motion of Perfect Fluid with a Free Surface 

      Andreev, Victor K.; Андреев, Виктор К. (Сибирский федеральный университет. Siberian Federal University., 2015-02)
      The 3D continuous subalgebra is used to searching new partially invariant solution of incompressible perfect fluid equations. It can be interpreted as a non-stationary motion of a plane layer with one free surface. The ...
    • 2D Thermocapillary Motion of Three Fluids in a Flat Channel 

      Andreev, Victor K.; Cheremnykh, Elena N.; Андреев, Виктор К.; Черемных, Елена Н. (Сибирский федеральный университет. Siberian Federal University., 2016-12)
      Two-dimensional creeping motion of three immiscible, incompressible viscous fluids in a flat channel bounded by fixed solid walls, on which the temperature distribution is known, is investigated. The motion is induced ...
    • A-priory Error of the Initial Conditions While Solving the Problem of the Space Vehicle Navigation Using Pulsar Signals 

      Konakov, Aleksey S.; Tislenko, Vladimir I.; Shavrin, Vyacheslav V.; Конаков, Алексей С.; Тисленко, Владимир И.; Шаврин, Вячеслав В. (Сибирский федеральный университет. Siberian Federal University., 2016-07)
      The problem of a space vehicles (SV) navigation while processing the moments of signals from several space sources of Roentgen illumination incoming taking into consideration random error of measurements is discussed in ...
    • Ab Initio Investigation of the Spin-Reorientation Phase Transition in PrCo₅₋ₓNiₓ (x = 0-5) 

      Lukoyanov, Alexey V.; Лукоянов, Алексей В. (Сибирский федеральный университет. Siberian Federal University, 2016-12)
      The series PrCo₅₋ₓNiₓ (x = 0-5) was investigated within the LDA+U+SO method taking into account strong correlations and spin-orbit coupling in Pr-4f, as well as in Ni(Co)-3d states. We give a detailed description of total ...
    • Adaptive Identification Method of a Signal from Stray Magnetic Field Sensor for Turbogenerator Diagnostics 

      Polishchuk, Vladimir I.; Sergeev, Viktor L.; Полищук, Владимир И.; Сергеев, Виктор Л. (Сибирский федеральный университет. Siberian Federal University., 2015-05)
      The topic of this paper is dictated by the necessity to improve the reliability of methods for deter- mining a short circuit of rotor winding with the use of the stray magnetic field sensor installed at the turbogenerator ...
    • Algebraic Analysis of Differential Equations 

      Osetrova, Tatyana A.; Tarkhanov, Nikolai (Сибирский федеральный университет. Siberian Federal University, 2008-11)
      Given any algebra over a field with a finite number of generators, we define a first order partial differential operator acting on functions taking their values in the algebra. While being not canonical, the construction is ...
    • Algebraic Sets with Fully Characteristic Radicals 

      Shahryari, Mohammad; Шахриари, Мохаммад (Сибирский федеральный университет. Siberian Federal University, 2017-09)
      We obtain a necessary and sufficient condition for an algebraic set in a group to have a fully character- istic radical. As a result, we see that if the radical of a system of equation S over a group G is fully characteristic, ...
    • An Algorithmic Implementation of Runge’s Method for Cubic Diophantine Equations 

      Osipov, Nikolay N.; Gulnova, Bella V.; Осипов, Николай Н.; Гульнова, Белла В. (Сибирский федеральный университет. Siberian Federal University, 2018-05)
      In this paper we propose an algorithmic implementation of the elementary version of Runge’s method for solving cubic diophantine equations with two unknowns. Moreover, we give the estimates for the solutions to such equations
    • Amplification of Light by Molecules with Selectively Oriented States in the Pulsed Electric Field 

      Kuzovatov, Igor A.; Slabko, Vitaliy V.; Shamshurin, Alexey V.; Кузоватов, Игорь А.; Слабко, Виталий В.; Шамшурин, Алексей В. (Сибирский федеральный университет. Siberian Federal University., 2016-07)
      The possibility of inversionless amplification of light by dichroic molecules that can be oriented selectively over states by application of an pulsed electric field is analyzed. The numerical simulation of the orien- tation ...
    • Analysis of an Exact Solution of Problem of the Evaporative Convection (Review). Part I. Plane Case 

      Bekezhanova, Victoria B.; Goncharova, Olga N.; Shefer, Ilia A.; Бекежанова, Виктория Б.; Гончарова, Ольга Н.; Шефер, Илья А. (Сибирский федеральный университет. Siberian Federal University, 2018-06)
      Development of theory describing the convection under conditions of "liquid – gas" phase transition, is caused by the active experimental study of the convective phenomena accompanied by evapora- tion/condensation at ...
    • Analysis of an Exact Solution of Problem of the Evaporative Convection (Review). Part II. Three-dimensional Flows 

      Bekezhanova, Victoria B.; Goncharova, Olga N.; Shefer, Ilia A.; Бекежанова, Виктория Б.; Гончарова, Ольга Н.; Шефер, Илья А. (Сибирский федеральный университет. Siberian Federal University, 2018-06)
      In the paper the review of exact solutions of the three-dimensional convection problems is presented. The solutions allow one to model the two-layer convective fluid flows with evaporation at the thermocapillary interface
    • Analysis of Financial Time Series with Binary N-Grams Frequency Dictionaries 

      Sadovsky, Michael G.; Borovikov, Igor; Садовский, Михаил Г.; Боровиков, Игорь (Сибирский федеральный университет. Siberian Federal University., 2014-01)
      The paper presents a novel approach to statistical analysis of financial time series. The approach is based on n-grams frequency dictionaries derived from the quantized market data. Such dictionaries are studied by ...
    • Analysis of Superconductor Magnetization Hysteresis 

      Gokhfeld, Denis M.; Гохфельд, Денис М. (Сибирский федеральный университет. Siberian Federal University, 2018-06)
      The critical state model and the extended critical state model are described to analyse a magnetization hysteresis and to find superconductor parameters. We discuss how geometric sizes and form influence on magnetization ...
    • Analysis of the Stochastic Excitement in a Model of Flow Reactor 

      Bashkirtseva, Irina A.; Fominykh, Polina M.; Башкирцева, Ирина А.; Фоминых, Полина М. (Сибирский федеральный университет. Siberian Federal University., 2016-07)
      A probabilistic mechanism of the stochastic excitement in a model of flow reactor is studied. To analyze this phenomenon in regions of mono- and bistability the stochastic sensitivity function technique and the method ...
    • Analytic Continuation of Power Series by Means of Interpolating the Coefficients by Meromorphic Functions 

      Mkrtchyan, Aleksandr J.; Мкртчян, Александр Д. (Сибирский федеральный университет. Siberian Federal University., 2015-05)
      We study the problem of analytic continuation of a power series across an open arc on the boundary of the circle of convergence. The answer is given in terms of a meromorphic function of a special form that interpolates ...
    • Anisotropic Ising Model with Countable Set of Spin Values on Cayley Tree 

      Botirov, Golibjon I.; Ботиров, Голибжон И. (Сибирский федеральный университет. Siberian Federal University, 2017-09)
      In this paper we investigate of an infinite system of functional equations for the Ising model with com- peting interactions and countable spin values 0; 1; : : : and non zero filed on a Cayley tree of order two. We ...
    • Antiplane Axisymmetric Creep Deformation of Incompressible Medium 

      Firsov, Sergey N.; Prokudin, Aleksandr N.; Фирсов, Сергей Н.; Прокудин, Александр Н. (Сибирский федеральный университет. Siberian Federal University., 2015-11)
      Flow of incompressible medium under varying gradient of pressure is considered. It is assumed that medium exhibits nonlinear elastic and creep behavior. The theory of large strains based on transport equations for the ...
    • Antiplane Strain of Hardening Elastoviscoplastic Medium 

      Prokudin, Aleksandr N.; Firsov, Sergey V.; Прокудин, Александр Н.; Фирсов, Сергей В. (Сибирский федеральный университет. Siberian Federal University, 2018-08)
      Deforming of hardening elastoviscoplastic medium under the action of variable pressure gradient is con- sidered in this paper. The displacement vector of material points has only vertical component. Mathe- matical model ...
    • Application of Explicit Methods with Extended Stability Regions for Solving Stiff Problems 

      Novikov, Eugeny A.; Rybkov, Mikhail V.; Новиков, Е.А.; Рыбков, Михаил В. (Сибирский федеральный университет. Siberian Federal University., 2016-06)
      An algorithm is developed to determine coefficients of the stability polynomials such that the explicit Runge-Kutta methods have a predetermined shape and size of the stability region. Inequalities for accuracy and ...
    • Application of Self-Gonfiguring Genetic Algorithm for Human Resource Management 

      ˇSkraba, Andrej; Kofjaˇc, Davorin; ˇZnidarˇsiˇc, Anja; Maletiˇ, Matjaˇz; Rozman, ˇCrtomir; Semenkina, Maria E.; Semenkin, Eugene S.; Stanovov, Vladimir V.; Шкраба, Андрей; Кофьяч, Даворин; Жнидаршич, Аня; Малетич, Матьяж; Рoзман, Чртомир; Семенкин, Евгений С.; Семенкина, Мария Е.; Становов, Владимир В. (2015-02)
      This paper describes the problem of human resource management which can appear in many organiza- tions during restructuration periods. The problem is simulated by a dynamic model, similar to a supply chain model with ...