Browsing 2(94)/2019-Математика by Title

Browsing 2(94)/2019-Математика by Title

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  • Mathematical modeling of the source and environment response for the equation of geoelectrics 
    Iskakov, K.T.; Mukanova, B.G.; Berdyshev, A.S.; Kembay, A.S.; Tokseit, D.K. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    In this paper an algorithm is proposed for determining the source of excitation of electromagnetic waves emitted by the Ground-penetrating radar (GPR) device as a function of time. A mathematical model for solving this ...
  • Models of interaction of cryptography and chaotic dynamics 
    Shayakhmetova, B.K.; Ten, T.L.; Kogay, G.D.; Omarova, Sh.E. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    Cryptography deals with the problem of information protection by its transformation, providing the protection of information (by means of computational techniques), i.e. a set of agreed encryptian tools. Under the ...
  • On a pseudo-Volterra nonhomogeneous integral equation 
    Kosmakova, M.T.; Akhmanova, D.M.; Tuleutaeva, Zh.M.; Kasymova, L.Zh. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    In this paper the issues of the solvability of a pseudo-Volterra nonhomogeneous integral equation of the second kind are studied. The solution to the corresponding homogeneous equation and the classes of the uniqueness of ...
  • On multi-periodic solutions of quasilinear autonomous systems with an operator of differentiation on the Lyapunov’s vector field 
    Sartabanov, Zh.A.; Omarova, B.Zh. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    A quasilinear autonomous system with an operator of differentiation with respect to the characteristic directions of time and space variables associated with a Lyapunov’s vector field is considered. The question of the ...
  • On the calculation of rectangular plates by the trigonometric series 
    Yessenbayeva, G.A.; Akhanov, F.M.; Makazhanova, T.Kh. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    The article is devoted to the question of applying the method of single trigonometric series to solving the plate bending problems. In this article the structure of this method is described, its main components are ...
  • Some new integral inequalities for (s;m)-convex and (а;m)-convex functions 
    Bayraktar, B.; Kudaev, V.Ch. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    The paper considers several new integral inequalities for functions the second derivatives of which, with respect to the absolute value, are (s;m)-convex and (а;m)-convex functions. These results are related to well-known ...
  • Splitting method and the existence of a strong solution of the Navier-Stokes equations 
    Akishev (Akysh), A.Sh. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    In the author’s article from the previous issue of the journal from the properties of the ONS solutions the relation between pressure and module square of velocity vector is set. Based on which the uniqueness of the weak ...
  • The atomic definable subsets of semantic model 
    Yeshkeyev, A.R.; Issaeva, A.K.; Mussina, N.M. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    In this paper some properties of small models, generally speaking, not necessarily complete theories and their relationship with each other were considered. Under small models we will understand some modifications of the ...
  • The J-minimal sets in the hereditary theories 
    Yeshkeyev, A.R.; Omarova, M.T.; Zhumabekova, G.E. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    Our attention in given article will be paid to the study of model-theoretic properties of hereditary Jonsson theories, while we consider Jonsson theories that retain jonsonness under any admissible enrichment. In given ...
  • The usage of the method of mathematical statistics in the process of optimization of the content of antifriction composite materials 
    Zinchenko, D.A.; Akimov, A.V.; Babii, M.V. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    The optimum content of microtalc (dispersion d = 7...10 μm) and silver carbonate (dispersion d = 0,5 μm) fillers in polymeric materials was determined by the method of mathematical statistics to form an adhesive and ...
  • Two-dimensional thermo-viscoelastic waves in layered media 
    Bukenov, M.M.; Adamov, A.A.; Mukhametov, Y.M. (Ye.A.Buketov Karaganda State University Publishing house, 2019-06-28)
    Dynamic problems of deformation of solids have been the subject of numerous studies in the CIS and abroad. The rejection of a number of simplifying assumptions made in the cited and other published works leads to the need ...

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