Mathematics: Недавние поступления

Отображаемые элементы 101-120 из 236

    • SEGMENTATION OF AEROSPACE IMAGES BY A NON-STANDARD APPROACH USING INFORMATIVE TEXTURAL FEATURES 

      Yerzhanova, A.; Abdikerimova, G.,; Alimova, Z.,; Slanbekova, A.,; Tungatarova, A.,; Muratkhan, R.,; Borankulova, G.,; Zhunussova, G. (Eastern-European Journal of Enterprise Technologies, 2022)
      The article presents an analysis of a non-standard approach to the segmentation of textural areas in aerospace images. The question of the applicability of sets of textural features for the analysis of experimental data is being investigated to identify characteristic areas on aerospace images that in the future it will be possible to identify types of crops, ...
      2024-12-25

    • Reconstructed f (R) Gravity and Its Cosmological Consequences in theChameleon Scalar Field with a Scale Factor Describing the Pre-Bounce Ekpyrotic Contraction 

      Karmakar, Soumyodipta; Myrzakulov, Kairat; Chattopadhyay, Surajit; Myrzakulov, Ratbay (Symmetry, 2020)
      2024-12-25

    • Ranks and approximations for families of cubic theories 

      Markhabatov, N.D. (Bulletin of the Karaganda University. Mathematics Series, 2023)
      In this paper, we study the rank characteristics for families of cubic theories, as well as new properties of cubic theories as pseudofiniteness and smooth approximability. It is proved that in the family of cubic theories, any theory is a theory of finite structure or is approximated by theories of finite structures. The property of pseudofiniteness or smoothly approximability ...
      2024-12-25

    • PROTOTYPING AN INTEGRATED IOT-BASED REAL-TIME SEWER MONITORING SYSTEM USING LOW-POWER SENSORS 

      Utepov, Y.; Neftissov, A.; Mkilima, T.; Mukhamejanova, A.; Zharassov, S.; Kazkeyev, A.; Biloshchytskyi, A (Eastern-European Journal of Enterprise Technologies, 2023)
      Improper monitoring of sewage networks may raise various issues such as overflows, pipe blockages, theft of manhole covers, leading to flooding and pollution, infrastructure damage, vehicles accidents, injury, and even death from falling into open manholes. The key objective of this research was to examine different elements and create a prototype architecture ...
      2024-12-25

    • Process control issues of fine grinding in a planetary mill 

      Atanov, S. K.; Bigaliyeva, A. Z.; Apachidy, N. K.; Rusak, A. V. (Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 2020)
      The article is devoted to the study of controlled grinding processes in a planetary mill. The possibility of continuous monitoring of the fineness of grinding by using the laws of automatic control, synthesized on the basis of the optimization approach, is considered. A mathematical model of the control object in the linear stationary approximation is formed. The dynamics of ...
      2024-12-25

    • Principal component analysis in the epidemiology of diarrhoea in calves 

      Kadyrov, Ablaikhan; Ussenbayev, Altay; Kurenkeyeva, Dariyash; Kurenkey, Berdaly; Abdrakhmanov, Sarsenbay; Tashatov, Nurlan (Indonesian Journal of Electrical Engineering and Computer Science, 2023)
      The paper is the first to use principal component analysis (PCA) in veterinary epidemiology and aims to identify the most significant agents of diarrhoea in calves. Data were collected from 245 calves on 32 farms within 13 districts of Northern Kazakhstan. Epidemiological data were simulated in R, using standard PCA modules. The data clustering was carried out based on ...
      2024-12-25

    • Preschool Education and its Impact on the Scientific and Research Potential of Rising Schoolchildr otential of Rising Schoolchildren: in F en: in Favor or Against? or or Against? 

      Mambetalina, Aliya; Karkulova, Aigul; Lebedeva, Marina; Sabirova, Lilya (Information Sciences Letters, 2023)
      This study examines the correlation between preschool education and the development of scientific thinking in rising schoolchildren. The research involved testing 84 first graders aged 6.5-8 years in two schools in Kazakhstan. The results showed that 52% of the children who attended kindergarten regularly had a high level of scientific thinking, while those with poor ...
      2024-12-25

    • Oscillation and spectral properties of some classes of higher order differential operators and weighted nth order differential inequalities 

      Kalybay, Aigerim; Oinarov, Ryskul; Sultanaev, Yaudat (Electronic Journal of Qualitative Theory of Differential Equations, 2021)
      In this paper, we obtain strong oscillation and non-oscillation conditions for a class of higher order differential equations in dependence on an integral behavior of its coefficients in a neighborhood of infinity. Moreover, we establish some spectral properties of the corresponding higher order differential operator. In order to prove these we establish a certain weighted ...
      2024-12-25

    • Maximal Lp-regularity for a second-order differential equation with unbounded intermediate coefficient 

      Ospanov, Kordan N. (Electronic journal on the qualitative theory of differential equations, 2019)
      2024-12-25

    • Output Tracking Control for High-Order Nonlinear Systems with Time Delay via Output Feedback Design 

      Alimhan, Keylan; Mamyrbayev, Orken J.; Abdenova, Gaukhar A.; Akmetkalyeva, Almira (Symmetry, 2021)
      Design approach of an output feedback tracking controller is proposed for a class of highorder nonlinear systems with time delay. To deal with the time delays, an appropriate Lyapunov– Krasovskii the tracking analysis is ingeniously constructed, and an output feedback tracking controller is designed by using a homogeneous domination method. It is shown that the proposed output ...
      2024-12-25

    • ORGANIZATION OF ONLINE LEARNING USING THE INTELLIGENT METASYSTEM OF OPEN SEMANTIC TECHNOLOGY FOR INTELLIGENT SYSTEMS 

      Kintonova, A.; Sabitov, A.; Povkhan, I.; Khaimulina, D.; Gabdreshov, G. (Eastern-European Journal of Enterprise Technologies, 2023)
      Distance learning today allows you to create a system of mass continuous selflearning, universal exchange of information, regardless of the presence of time and space zones. For more effective online learning, it is necessary to introduce artificial intelligence technologies and methods for implementing learning systems. In this paper, the objects of research were: ...
      2024-12-25

    • 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 inequalities for studying these processes. Based on the tools we provide, a new mathematical model of a production network with several final consumers is created. ...
      2024-12-25

    • Well posedness for one class of elliptic equations with drift 

      Ospanov, Kordan N. (Boundary Value Problems, 2023)
      2024-12-25

    • 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 results, we investigate a certain weighted second-order differential inequality of independent interest.
      2024-12-25

    • 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 estimates of the least constant of a certain weighted differential inequality.
      2024-12-25

    • 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)
      G. Akishev. On the exactness of the inequality of different metrics for trigonometric polynomials in the generalized Lorentz space, Trudy Instituta Matematiki i Mekhaniki UrO RAN, 2019, vol. 25, no. 2, pp. 9–20 .
      2024-12-25

    • 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 object under study. The object of study of this work is a catalytic reforming unit that has been operating for more than half a century and is characterized ...
      2024-12-25

    • Model companion properties of some theories 

      Kabidenov, A.; Kasatova, A.; Bekenov, M.I.; Markhabatov, N.D. (Bulletin of the Karaganda University. Mathematics Series, 2024)
      2024-12-18

    • OSCILLATORY AND SPECTRAL PROPERTIES OF A CLASS OF FOURTH–ORDER DIFFERENTIAL OPERATORS VIA A NEW HARDY–TYPE INEQUALITY 

      OINAROV, RYSKUL; KALYBAY, AIGERIM; PERSSON, LARS-ERIK (Mathematical Inequalities & Applications, 2024)
      In this paper, we study oscillatory properties of a fourth-order differential equation and spectral properties of a corresponding differential operator. These properties are established by first proving a new second-order Hardy-type inequality, where the weights are the coefficients of the equation and the operator. This new inequality, in its turn, is established for ...
      2024-12-18

    • Metric-Affine Myrzakulov Gravity Theories 

      Myrzakulov, Nurgissa; Myrzakulov, Ratbay; Ravera, Lucrezia (Symmetry, 2021)
      In this paper, we review the so-called Myrzakulov Gravity models (MG-N, with N = I, II, . . . , VIII) and derive their respective metric-affine generalizations (MAMG-N), discussing also their particular sub-cases. The field equations of the theories are obtained by regarding the metric tensor and the general affine connection as independent variables. We then focus on the case ...
      2024-12-18