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  • Application of DMA 242 C for Quasi-Static Measurements of Piezoelectric Properties of Solids 

    Turchin, Pavel P.; Turchin, Vladimir I.; Yurkevich, Sergey V.; Sukhodaev, Pavel O.; Raikova, Irina S.; Турчин, Павел П.; Турчин, Владимир И.; Юркевич, Сергей В.; Суходаев, Павел О.; Райкова, Ирина С. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    An experimental device for quasi-static measurements of piezoelectric moduli dijk, based on the possibilities of precision variations in mechanical stresses with the device DMA 242 C in the frequency range 0-100 Hz has ...
  • Similarity in the Far Swirling Momentumless TurbulentWake 

    Shmidt, Alexey V.; Шмидт, Алексей В. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    A self–similar solution to one model of the far momentumless swirling turbulent wake is proposed in the paper
  • Hypergeometric Series and the Mellin-Barnes Integrals for Zeros of a System of Laurent Polynomials 

    Kulikov, Vladimir R.; Куликов, Владимир Р. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    In the article we present a criterion for convergence of the Mellin-Barnes integral for zeros of a system of Laurent polynomials. Also we give a hypergeometric series for these zeros
  • Physical Basis of Quasi-optimal Seismoacoustic Pulse Generating for Geophysical Prospecting in Shallow Water and Transit Zones. Part 2. The Layout of Aqueous Seismic Source and the Results of Experiments 

    Kudinov, Danil S.; Maykov, Oleg A.; Balandin, Pavel V.; Кудинов, Данил С.; Майков, Олег А.; Баландин, Павел В. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    The article discusses theoretical aspects of seismic wave excitation of in the aquatic environ- ment, addresses the problems of instrumental implementation of a fundamentally new source of seismic vibrations that can ...
  • Minimal Proper Quasifields with Additional Conditions 

    Kravtsova, Olga V.; Кравцова, Ольга В. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    We investigate the finite semifields which are distributive quasifields, and finite near-fields which are associative quasifields. A quasifield Q is said to be a minimal proper quasifield if any of its sub-quasifield H ...
  • Analytic Continuation for Solutions to the System of Trinomial Algebraic Equations 

    Antipova, Irina A.; Kleshkova, Ekaterina A.; Kulikov, Vladimir R.; Антипова, Ирина А.; Клешкова, Екатерина А.; Куликов, Владимир Р. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    In the paper, we deal with the problem of getting analytic continuations for the monomial function associated with a solution to the reduced trinomial algebraic system. In particular, we develop the idea of applying the ...
  • Berry Phase for Time-Dependent Coupled Harmonic Oscillators in the Noncommutative Phase Space via Path Integral Techniques 

    Khiari, Leila; Boudjedaa, Tahar; Makhlouf, Abdenacer; Tayeb Meftah, Mohammed; Хиари, Лейла; Буджедаа, Тахар; Махлуф, Абденасер; Мохамед Таеб Мефта (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    The purpose of this paper is the description of Berry’s phase, in the Euclidean Path Integral formalism, for 2D quadratic system: two time dependent coupled harmonic oscillators. This treatment is achieved by using the ...
  • Fundamental Solutions for a Class of Multidimensional Elliptic Equations with Several Singular Coefficients 

    Ergashev, Tuhtasin G.; Эргашев, Тухтасин Г. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    The main result of the present paper is the construction of fundamental solutions for a class of multidimensional elliptic equations with several singular coefficients. These fundamental solutions are directly connected ...
  • On Application of Prandtl-Obukhov Formula in the Numerical Model of the Turbulent Layer Depth Dynamics 

    Belolipetskii, Victor M.; Genova, Svetlana N.; Белолипецкий, Виктор М.; Генова, Светлана Н. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    A numerical simulation of the penetration of the turbulent layer in a stably stratified fluid under the action of tangential stress was performed. For the coefficient of vertical turbulent exchange, the Prandtl–Obukhov ...
  • On the Asymptotic Behavior of the Conjugate Problem Describing a Creeping Axisymmetric Thermocapillary Motion 

    Andreev, Victor K.; Magdenko, Evgeniy P.; Андреев, Виктор К.; Магденко, Евгений П. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    In this paper the conditions for the law of temperature behavior on a solid cylinder wall describes, under which the solution of a linear conjugate inverse initial-boundary value problem describing a two-layer axisymmetric ...
  • A Degree Theory for Lagrangian Boundary Value Problems 

    Alsaedy, Ammar; Tarkhanov, Nikolai; Аль-Саеди, Аммар; Тарханов, Николай (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    We study those nonlinear partial differential equations which appear as Euler-Lagrange equations of variational problems. On defining weak boundary values of solutions to such equations we initiate the theory of Lagrangian ...
  • Synthesis of the Radio-navigation Signals Parameters Measured by an Exploded Antenna Elements 

    Tyapkin, Valery N.; Dmitriev, Dmitry D.; Kremez, Nikolay S.; Tyapkin, Igor V.; Тяпкин, Валерий Н.; Дмитриев, Дмитрий Д.; Кремез, Николай С.; Тяпкин, Игорь В. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    Modern GNSS navigation equipment has a significant drawback — low noise immunity. To solve this problem, they are based on phased array antennas using adaptive signal processing algorithms. The final effect of such ...
  • Electromechanical Properties and Anisotropy of Acoustic Waves Characteristics in Single Crystals YAl₃(BO₃)₄ 

    Turchin, Pavel P.; Burkov, Sergey I.; Turchin, Vladimir I.; Yurkevich, Sergey V.; Sukhodaev, Pavel O.; Raikova, Irina S.; Турчин, Павел П.; Бурков, Сергей И.; Турчин, Владимир И.; Юркевич, Сергей В.; Суходаев, Павел О.; Райкова, Ирина С. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    Velocity of bulk acoustic waves in base and rotated cuts have been measured by the ultrasonic pulse-echo method and values of CE ijkl and eijk in single crystals YAl3(BO3)4 have been calculated. The value of dijk piezoelectric ...
  • Physical Basis of Quasi-optimal Seismoacoustic Pulse Generating for Geophysical Prospecting in Shallow Water and Transit Zones. Part 1. Theoretical foundations 

    Kudinov, Danil S.; Maykov, Oleg A.; Balandin, Pavel V.; Кудинов, Данил С.; Майков, Олег А.; Баландин, Павел В. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    Despite the development of alternative energy, hydrocarbon raw materials is one of the most important energy resources in the world. The discovery of new deposits today is an urgent task. Long-term prospects for the ...
  • Features of the Metallization Influence on Phase Velocities of Acoustic Waves in Piezoelectric Plates 

    Zolotova, Olga P.; Burkov, Sergey I.; Золотова, Ольга П.; Бурков, Сергей И. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    The paper presents an analysis of the influence of the load represented by two metal layers on the change in the phase velocity of the dispersion modes of the elastic Lamb and SH-waves in "Me/ZnO/Me" and "Me/AlN/Me" ...
  • Postulating the Theory of Experience and Chance 

    Vorobyev, Oleg Yu.; Воробьев, Олег Ю. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    The aim of the paper is the axiomatic justification of the theory of experience and chance, one of the dual halves of which is the Kolmogorov probability theory. The author’s main idea was the natural inclusion of ...
  • On Determinability of a Quotient Divisible Abelian Group of Rank 1 by Its Automorphism Group 

    Vildanov, Vadim K.; Timoshenko, Egor A.; Вильданов, Вадим К.; Тимошенко, Егор А. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    A criterion for determinability of a quotient divisible Abelian group of rank 1 by its automorphism group in the class of quotient divisible Abelian groups of rank 1 is considered in the paper
  • On Domains of Convergence of Multidimensional Lacunary Series 

    Tuychiev, Taxir T.; Туйчиев, Тахир Т. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    This paper is devoted to multidimensional analogues of the Fabry and P˙olya theorems on lacunary series. Domains of convergence of lacunary Hartogs series and series in homogeneous polynomials are studied in this paper. ...
  • Magnetic Behavior and Nexafs-spectroscopy of Bi₂BaNb₂₋₂ₓСo₂ₓO₉₋δ 

    Rychkova, Lubov V.; Nekipelov, Sergey V.; Makeev, Boris A.; Belyy, Vladimir A.; Beznosikov, Dmitriy S.; Zhuk, Nadezhda A.; Рычкова, Любовь В.; Некипелов, Сергей В.; Макеев, Борис А.; Белый, Владимир А.; Безносиков, Дмитрий С.; Жук, Надежда А. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    The samples of solid solutions of Bi₂BaNb₂₋₂ₓСo₂ₓO₉₋δ composition at x 0:04 were synthesized by the solid-phase method. The electron state and the nature of the exchange interactions of cobalt atoms in the samples ...
  • Fictitious Domain Method for Equilibrium Problems of the Kirchhoff-Love Plates with Nonpenetration Conditions for Known Configurations of Plate Edges 

    Lazarev, Nyurgun P.; Everstov, Vladimir V.; Romanova, Natalya A.; Лазарев, Нюргун П.; Эверстов, Владимир В.; Романова, Наталья А. (Сибирский федеральный университет. Siberian Federal University, 2019-12)
    New models are investigated in this paper, that describe equilibrium states of plates with Signorini type nonpenetration conditions. In these models, it is assumed that under appropriate loading, plates have special ...

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