• Young Duality for Variational Inequalities and Nonparametric Method of Demand Analysis in Input–Output Models with Inputs Substitution: Application for Kazakhstan Economy 

  Kerimkhulle, Seyit; Obrosova, Nataliia; Shananin, Alexander; Tokhmetov, Akylbek (Mathematics (Basel), 2023)

  The global macroeconomic shocks of the last decade entail the restructuring of national production networks and induce processes of input substitution. We suggest mathematical tools of Young duality for variational ...
• Well posedness for one class of elliptic equations with drift 

  Ospanov, Kordan N. (Boundary Value Problems, 2023)
• Weighted Second-Order Differential Inequality on Set of Compactly Supported Functions and Its Applications 

  Kalybay, Aigerim; Oinarov, Ryskul; Sultanaev, Yaudat (Mathematics (Basel), 2021)

  In the paper, we establish the oscillatory and spectral properties of a class of fourth-order differential operators in dependence on integral behavior of its coefficients at zero and infinity. In order to obtain these ...
• Weighted differential inequality and oscillatory properties of fourth order differential equations 

  Kalybay, Aigerim; Oinarov, Ryskul; Sultanaev, Yaudat (Journal of Inequalities and Applications, 2021)

  In this paper, we investigate the oscillatory properties of two fourth order differential equations in dependence on boundary behavior of its coefficients at infinity. These properties are established based on two-sided ...
• On the exactness of the inequality of different metrics for trigonometric polynomials in the generalized Lorentz space. 

  Akishev, G. (Труды Института математики и механики УрО РАН, 2019)
• The System of Models and Optimization of Operating Modes of a Catalytic Reforming Unit Using Initial Fuzzy Information 

  Orazbayev, Batyr; Zhumadillayeva, Ainur; Orazbayeva, Kulman; Iskakova, Sandugash; Utenova, Balbupe; Gazizov, Farit; Ilyashenko, Svetlana; Afanaseva, Olga (Energies, 2022)

  The study aims to develop a system of models and a method for optimizing the operating modes of a catalytic reforming unit using fuzzy information, which makes it possible to effectively control the reforming process of ...
• The Current Status and Lost Biogas Production Potential of Kazakhstan from Anaerobic Digestion of Livestock and Poultry Manure 

  Yerassyl, Dulatbay; Jin, Yu; Sugirbaeva, Zhanar; Kazambayeva, Aigul; Yessengaliyeva, Saltanat (Energies, 2022)

  Kazakhstan has large reserves of natural resources, including coal, oil, and natural gas. We hope to replace fossil fuels with renewable sources of energy—particularly renewable natural gas. Thus, Kazakhstan, like other ...
• BOUNDEDNESS AND COMPACTNESS OF A CERTAIN CLASS OF MATRIX OPERATORS WITH VARIABLE LIMITS OF SUMMATION 

  Temirkhanova, A.M.; Beszhanova, A.T. (EURASIAN MATHEMATICAL JOURNAL, 2020)
• TAME AND WILD AUTOMORPHISMS OF DIFFERENTIAL POLYNOMIAL ALGEBRAS OF RANK 2 

  Неизвестный автор (Journal of Mathematical Sciences, 2021)
• Surfaces and Curves Induced by Nonlinear Schrödinger-Type Equations and Their Spin Systems 

  Myrzakul, Akbota; Nugmanova, Gulgassyl; Serikbayev, Nurzhan; Myrzakulov, Ratbay (Symmetry, 2021)

  In recent years, symmetry in abstract partial differential equations has found wide application in the field of nonlinear integrable equations. The symmetries of the corresponding transformation groups for such equations ...
• Supporting Multilingual Education with Computer Aided Instruction Applications 

  Rezuanova, G.; Bulatbayeva, K.; Smagulova, M.,; Tynybayeva, M.; Schnaider, V.; Zhukenova, A. (International Journal of Education in Mathematics, Science, and Technology, 2023)

  The purpose of this study is to examine the effect of computer-assisted instruction on the language achievement (Kazakh, English and Russian) and attitudes of university students who will work in general education ...
• Study of the Process of Packet Arrival at a Multiservice Node 

  Shingissov, Daniyar; Seilov, Shakhmaran; Goikhman, Vadim; Sokolov, Nikolai; Akhmetova, Zhanar; Uskenbayeva, Gulzhan; Rzayeva, Leila (Symmetry, 2022)

  The paper considers the main ways of describing the process that characterizes the arrival of packets to a multiservice node of a telecommunications network. The features of the process under consideration are best ...
• Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview 

  Odintsov, Sergei D.; Oikonomou, Vasilis K.; Myrzakulov, Ratbay (Symmetry, 2022)

  In this work, we shall exhaustively study the effects of modified gravity on the energy spectrum of the primordial gravitational waves background. S. Weinberg has also produced significant works related to the primordial ...
• Some non-standard quasivarieties of lattices 

  Lutsak, S.M.; Basheyeva, A.O.; Asanbekov, A.M.; Voronina, O.A. (Bulletin of the Karaganda University. Mathematics Series, 2023)

  The questions of the standardness of quasivarieties have been investigated by many authors. The problem "Which finite lattices generate a standard topological prevariety?" was suggested by D.M. Clark, B.A. Davey, M.G. ...
• Some new Fourier inequalities for unbounded orthogonal systems in Lorentz–Zygmund spaces 

  Akishev, G.; Lukkassen, D.; Persson, L.E. (Journal of Inequalities and Applications, 2020)
• SOME LOCAL WELL POSEDNESS RESULTS IN WEIGHTED SOBOLEV SPACE H1/3 FOR THE 3-KDV EQUATION 

  Castro, A.J.; Zhapsarbayeva, L.K. (KazNU Bulletin. Mathematics, Mechanics, Computer Science Series, 2023)

  The paper analyses the local well posedness of the initial value problem for the k-generalized Korteweg-de Vries equation for k = 3 with irregular initial data. k-generalized Korteweg-de Vries equations serve as a model ...
• Some Fourier inequalities for orthogonal systems in Lorentz–Zygmund spaces 

  Akishev, G.; Persson, L.E.; Seger, A. (Journal of Inequalities and Applications, 2019)

  A number of classical inequalities and convergence results related to Fourier coefficients with respect to unbounded orthogonal systems are generalized and complemented. All results are given in the case of Lorentz–Zygmund ...
• Solution of one boundary value task of viscoelasticity in a nonlinear formulation, in the case of a cubic stress-strain relation 

  Dzhanmuldaev, B.D.; Janmuldayeva, A.B.; Jalbyrova, Zh.; Smakhanova, A.K.; Madelkhanova, A.Z. (International Journal of Mathematics and Physics, 2023)

  In this paper, the solution of a boundary value task in the nonlinear formulation is considered by the authors [1][2]. In spite of its proximity to linear theory, the nonlinear theory of viscoelasticityhas not yet been ...
• Solar-Powered Water Electrolysis Using Hybrid Solid Oxide Electrolyzer Cell (SOEC) for Green Hydrogen—A Review 

  Afroze, Shammya; Binti Sofri, Amal Najeebah Shalihah; Reza, Md Sumon; Iskakova, Zhanar Baktybaevna; Kabyshev, Asset; Kuterbekov, Kairat A.; Bekmyrza, Kenzhebatyr Z.; Taimuratova, Lidiya; Rakib Uddin, Mohammad; Azad, Abul K. (Energies, 2023)

  The depletion of fossil fuels in the current world has been a major concern due to their role as a primary source of energy for many countries. As non-renewable sources continue to deplete, there is a need for more ...
• Detection of the corner structures in 3D arrays using scalable masks 

  Kazantsev, I. G.; Mukhametzhanova, B. O.; Iskakov, K. T. (Siberian Electronic Mathematical Reports, 2021)

  Scalable masks for the selection of angular structures in three-dimensional (3D) digital images are considered, which are used in processing with a 3D window sliding over the image and convolved with image fragments. ...

Просмотреть больше