Browsing 4(92)/2018-Математика by Title

Browsing 4(92)/2018-Математика by Title

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  • A solvability conditions of mixed problems for equations of parabolic type with involution 
    Sarsenbi, A.A. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this work the partial differential equations with involutions are considered. The mixed problems for the parabolic type equation, with constant and variable constants, corresponding to the Dirichlet type boundary ...
  • Asymptotic convergence of the solution for singularly perturbed boundary value problem with boundary jumps 
    Mirzakulova, A.E.; Atakhan, N.; Asset, N.; Rysbek, A. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    The article is devoted to study of boundary value problem with boundary jumps for third order linear integro-di˙erential equation with a small parameter at the highest derivatives, provided that additional characteristic ...
  • Boundary value problems for essentially-loaded parabolic equation 
    Ramazanov, M.I.; Kosmakova, M.T.; Romanovsky, V.G.; Zhanbusinova, B.H; Tuleutaeva, Zh.M. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this paper we investigate the first boundary value problem for essentially loaded equation of heat conduction, i.e. when laden terms are derivatives for any finite order. It is shown that if the point of load is fixed, ...
  • Calculation of continuous beams taking into account the elastic compliance of supports 
    Nuguzhinov, Zh.S.; Akhmediev, S.K.; Zholmagambetov, S.R.; Khabidolda, Î. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    This work considers multispan structures (beams, columns) supported on intermediate elastically compliant supports. The structures are also extensively used in high-rise construction. The research is carried out by an exact ...
  • Calculation of velocities and accelerations of points of a crank mechanism 
    Beisenov, N.K. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this article, presented is an analytical method of determining linear and angular velocities and accelerations of links of a crank mechanism on the basis of a grapho-analytical method (without the construction of ...
  • Companions of fragments in admissible enrichments 
    Yeshkeyev, A.R.; Zhumabekova, G.E. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this paper, model-theoretic properties of companions of fragments of special subsets in admissible enrichments are considered. Admissible enrichments are understood as enrichments of a signature that preserve the basic ...
  • Development of a mathematical model for signal processing using laboratory data 
    Kabanikhin, S.I.; Iskakov, K.T.; Sholpanbaev, B.B.; Shishlenin, M.A.; Tokseit, D.K. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this paper, we consider a mathematical model for the interpretation of the radarograms which obtained by GPR systems. As noted in [1-3], in addition to testing the algorithms, it is necessary to compare the calculated ...
  • Families of theories of abelian groups and their closures 
    Pavlyuk, In.I.; Sudoplatov, S.V. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In studying the structural properties of elementary theories, a relationship between theories with respect to a series of natural operators plays an important role. This relationship can be determined by placing models of ...
  • General bounded multiperiodic solutions of linear equation with di˙erential operator in the direction of the main diagonal 
    Kulzhumiyeva, A.A; Sartabanov, Zh.A (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this article we determine the structure of the general solution of a n-th order linear equation with di˙erential operator in the direction of the main diagonal in a space of independent variables, and with coe􀀁cients ...
  • Mathematical model of cutting process of cutting tools with a side-mounted multifaceted, requiring no sharpening plates 
    Nastasenko, V.À.; Babiy, M.V.; Protsenko, V.O. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    The article presents the results of experimental research of the cutting process with cuto˙ tools with laterally mounted multifaceted unresharpenable plates (MUP), which allowed to confirm their eÿciency and progressiveness. ...
  • Maximal regularity and compactness conditions for a high order system of di˙erence equations 
    Beisenova, D.R.; Ospanov, K.N. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this paper we study an infinite linear system of di˙erence equations of high even order with the right-hand side from the Hilbert space of numerical sequences. Sequences formed from the coe􀀁cients of the equations of ...
  • Optimization of components in development of polymeric coatings for restoration of transport vehicles 
    Buketov, À.V.; Brailo, M.V.; Stukhlyak, D.P.; Yakushchenko, S.V. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    It is proved, that for improving the performance characteristics of vehicle parts, including their corrosion resistance and wear resistance, it is advisable to use protective polymeric composite coatings. It is shown that ...
  • Properties of hybrids of Jonsson theories 
    Yeshkeyev, A.R.; Mussina, N.M. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    This work is an introduction to the study of the properties of a new concept, as a hybrid of Jonsson theories. We define the basic concepts and framework for studying the model-theoretic properties of these concepts. The ...
  • Stable perturbations of boundary problems for di˙erential equations 
    Fazullin, Z.Yu.; Kanguzhin, B.E.; Seitova, A.A. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this paper, we expand the class of nondegenerate two-point boundary value problems for the Sturm-Liouville equation, which have a complete system of eigenfunctions and associated functions in special function spaces. ...
  • Sufficient conditions for the precompactness of sets in Local Morrey-type spaces 
    Matin, D.T.; Baituyakova, Zh.Zh.; Adilkhanov, A.N.; Bostanov, B.O. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this paper we give sufficient conations for the pre-compactness of sets іп local Morrey-type spaces LMpg>w(.) (Rn). For w(r) = r-X, Ө = to, 0 < Л < ^ there follows a known result for the Morrey spaces Mp(Rn). In the ...
  • The natural solvability of the Navier-Stokes equations 
    Akysh (Akishev), A.Sh. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    It is known that the three-dimensional Navier-Stokes equations (ÅNS) the existence theorem of smooth solutions in the presence of smooth data for the whole with respect to time has not proved and the uniqueness theorem is ...
  • The tri-harmonic Neumann problem 
    Burgumbayeva, S. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this article investigated the tri-harmonic Neumann function for the unit dics. For harmonics functions the Neumann’s boundary problem is well studied and solved under certain conditions through Neumann’s function, ...
  • Traveling wave solutions for the two-dimensional Zakharov-Kuznetsov-Burgers equation 
    Shaikhova, G.; Shaikhova, G. (Ye.A.Buketov Karaganda State University Publ., 2018-12-29)
    In this paper, the two-dimensional Zakharov-Kuznetsov-Burgers (ZKB) equation is investigated. The basic set of fluid equations is reduced to ZKB equation. This equation is a two-dimensional analog of the well-known Korteweg-de ...

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