Electronic catalog
Genre:Естественные науки (natural_sciences)
catalogue:Articles
Search result:
4141-4150 of 4396
periodical press (Magazines)
BOBODZHANOVA M. A.
Bobodzhanova, M. A. Singularly perturbed integro-differential equations with degenerate Hammerstein’s kernel [Text] / M. A. Bobodzhanova, B. T. Kalimbetov , V. F. Safonov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 57-68. - Bibliogr.: p. 66-68 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
Singularly perturbed integro-differential equations with degenerate kernels are considered
Keywords
singularly perturbed, Hammerstein’s equation, degenerate kernel, Fredholm’s equations, analytic function, Laurent’s series, passage to the limit, the Maple program
Kazakhstan
0/0 Free
periodical press (Magazines)
BOUSSAHA A.
Boussaha, A. A modified Jacobi elliptic functions method for optical soliton solutions of a conformable nonlinear Schrödinger equation [Text] / A. Boussaha, B. Semmar , M. Al-Smadi [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 69-77. - Bibliogr.: p. 75-77 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations
Annotation
In this paper, precise and exact traveling wave solutions of the conformable differential nonlinear Schrödinger equation is studied
Keywords
non-linear Schrödinger equation, conformable fractional derivative, modified Jacobi elliptic functions method, extracting optical solitons-solutions, fractional derivative
Kazakhstan
0/0 Free
periodical press (Magazines)
ÖZMEN N.
Özmen, N. Advances in the generalized Cesaro polynomials [Text] / N. Özmen, E. Erkuş-Duman // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 159-169. - Bibliogr.: p. 169 ISSN 2518-7929.
UDC:
512.622
Subject headings
- Polynomials
Annotation
This paper aims to introduce a multivariable and multiparameter generalization of Cesaro polynomials
Keywords
Cesaro polynomials, generating function, recurrence relation, hypergeometric function, integral representation
Kazakhstan
0/0 Free
periodical press (Magazines)
NURAKHMETOV T. N.
Nurakhmetov, T. N. Formation of a combined electron-hole emission state in the LiRbSO4 – Eu phosphor [Text] / T. N. Nurakhmetov, R. Z. Bakhtizin , D. A. Tolekov [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 25-33. - Bibliogr.: p. 30-31 ISSN 2518-7198.
UDC:
535.3
Subject headings
- Emission
Annotation
In the irradiated phosphor 4LiRbSO Eu, the mechanisms of formation of the induced or combined electron-emitting state at 3.1-2.94 eV were studied using optical and thermal activation spectroscopy methods
Keywords
electron, hole, recombination emission, intrinsic emission, sulfate, excitation, рекомбинациялық сәулелендіру, рекомбинационное излучение
Kazakhstan
0/0 Free
periodical press (Magazines)
SEISENBAYEVA G. S.
Seisenbayeva, G. S. Enhanced charge separation at the interface of Cu2O/CuSCN composite thin films synthesized by electrodeposition technique [Text] / G. S. Seisenbayeva, D. S. Kambar , A. V. Zavgorodniy [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 34-40. - Bibliogr.: p. 39 ISSN 2518-7198.
UDC:
535
Subject headings
- Optics
Annotation
This study focuses on the synthesis and characterization of hole transport layers (HTLs) for solar cells, particularly copper(I) thiocyanate (CuSCN) and cuprous oxide (Cu2O), synthesized via electrodeposition techniques
Keywords
solar cells, hole transport layers, electrodeposition, copper(I) thiocyanate, cuprous oxide, optimal synthesis conditions, photoelectric response, chare transport, электр тұндыру, электроосаждение
Kazakhstan
0/0 Free
periodical press (Magazines)
SALIM S. H.
Salim, S. H. Solving Volterra-Fredholm integral equations by non-polynomial spline functions [Text] / S. H. Salim, K. H. F. Jwamer , R. K. Saeed // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 170-184. - Bibliogr.: p. 183-184 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
In this paper a novel non-polynomial spline function to obtain the numerical solution of equation (1) for the first time
Keywords
Volterra integral equation, Fredholm integral equation, non-polynomial spline function, integral equations, linear equations
Kazakhstan
0/0 Free
periodical press (Magazines)
YESHKEYEV A. R.
Yeshkeyev, A. R. Double factorization of the Jonsson spectrum [Text] / A. R. Yeshkeyev, O. I. Ulbrikht , M. T. Omarova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 185-196. - Bibliogr.: p. 194-195 ISSN 2518-7929.
UDC:
512
Subject headings
- Algebra
Annotation
The main result of this paper is considering normal Jonsson theories class by similarity to some fixed class of polygons (S-acts)
Keywords
perfect Jonsson theory, normal Jonsson theory, Jonsson set, almost Jonsson set, Jonsson fragment, syntactic similarity, semantic similarity, Jonsson specrtum, cosemanticness, S-act
Kazakhstan
0/0 Free
periodical press (Magazines)
KOSHTYBAYEV T.
Koshtybayev, T. Correlation functions of weakly inhomogeneous plasma [Text] / T. Koshtybayev, M. Aliyeva // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - № 3 (115). - P. 6-14. - Bibliogr.: p. 11-12 ISSN 2518-7198.
UDC:
533.9.01
Subject headings
- Plasma theory and physics
Annotation
This article focuses on the kinetic theory of inhomogeneous plasma and explores the interaction between a high-frequency electric field and weakly inhomogeneous plasma
Keywords
high-frequency properties, inhomogeneous plasma, kinetic equation, variable field, collision integral, біртексіз плазма, кинетикалық теңдеу, неоднородная плазма, кинетическое уравнение
Kazakhstan
0/0 Free
periodical press (Magazines)
KASSYMETOVA M. T.
Kassymetova, M. T. Model-theoretic properties of J-non-multidimensional theories [Text] / M. T. Kassymetova, G. E. Zhumabekova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 119-126. - Bibliogr.: p. 124-126 ISSN 2518-7929.
UDC:
517
Subject headings
- Mathematical analysis
Annotation
The issues of utilizing the central type to analyze the theoretical and model properties of the idea of heredity were examined in this research, taking into account both theories and the Jonsson spectrum
Keywords
Jonsson theory, semantic model, perfect Jonsson theory, permissible enrichment, existentially closed model, J-stable theory, semantic pairs, existentially finite cover property, J-non-multidimensional theory
Kazakhstan
0/0 Free
periodical press (Magazines)
MIRZAKULOVA A. E.
Mirzakulova, A. E. Uniform asymptotic expansion of the solution for the initial valueproblem with a piecewise constant argument [Text] / A. E. Mirzakulova, K. T. Konisbayeva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 138-148. - Bibliogr.: p. 146-147 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations
Annotation
The article is devoted to the study of a singularly perturbed initial problem for a linear differential equation with a piecewise constant argument second-order for a small parameter
Keywords
singular perturbation, asymptotics, small parameter, boundary layer part, piecewise constant argument
Kazakhstan
0/0 Free
BOBODZHANOVA M. A.
SINGULARLY PERTURBED INTEGRO-DIFFERENTIAL EQUATIONS WITH DEGENERATE HAMMERSTEIN’S KERNEL
periodical press (Magazines)
0/0 Free
BOUSSAHA A.
A MODIFIED JACOBI ELLIPTIC FUNCTIONS METHOD FOR OPTICAL SOLITON SOLUTIONS OF A CONFORMABLE NONLINEAR SCHRÖDINGER EQUATION
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
0/0 Free
NURAKHMETOV T. N.
FORMATION OF A COMBINED ELECTRON-HOLE EMISSION STATE IN THE LIRBSO4 – EU PHOSPHOR
periodical press (Magazines)
0/0 Free
SEISENBAYEVA G. S.
ENHANCED CHARGE SEPARATION AT THE INTERFACE OF CU2O/CUSCN COMPOSITE THIN FILMS SYNTHESIZED BY ELECTRODEPOSITION TECHNIQUE
periodical press (Magazines)
0/0 Free
SALIM S. H.
SOLVING VOLTERRA-FREDHOLM INTEGRAL EQUATIONS BY NON-POLYNOMIAL SPLINE FUNCTIONS
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
0/0 Free
KASSYMETOVA M. T.
MODEL-THEORETIC PROPERTIES OF J-NON-MULTIDIMENSIONAL THEORIES
periodical press (Magazines)
0/0 Free
MIRZAKULOVA A. E.
UNIFORM ASYMPTOTIC EXPANSION OF THE SOLUTION FOR THE INITIAL VALUEPROBLEM WITH A PIECEWISE CONSTANT ARGUMENT
periodical press (Magazines)
0/0 Free