Electronic catalog
language:English
catalogue:Articles
Search result:
581-590 of 2269
periodical press (Magazines)
BEKTASOVA G. S.
Bektasova, G. S. Study of the copper structure samples externed to extreme influences [Text] / G. S. Bektasova, K. M. Issina , G. T. Imanzhanova [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - Vol. 29, № 1 (113). - P. 73-82. - Bibliogr.: p. 79-80 ISSN 2518-7198.
UDC:
539
Subject headings
- Physical nature of matter
Annotation
This work is devoted to the study of changes in the crystal structure, chemical and phase composition of cop-per samples subjected to extreme effects of temperature, pressure and electromagnetic fields
Keywords
explosion processing, мыс үлгілері, copper samples, plastic deformation, electromagnetic wave flow, ignition zone, кристалдық құрылым, медные образцы, кристаллическая структура
Kazakhstan
0/0 Free
periodical press (Magazines)
KATSYV S.
Katsyv, S. Application of non-Euclidean metric in the electric power industry for reduction of measurement uncertainty [Text] / S. Katsyv, V. Kukharchuk , V. Madyarov [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - Vol. 29, № 1 (113). - P. 83-91. - Bibliogr.: p. 89-90 ISSN 2518-7198.
UDC:
621.3.01
Subject headings
- Electrical engineering
Annotation
The paper proposes the use of the non-Euclidean metric to reduce the uncertainty that occurs when measuring voltage for the tasks of ongoing continuous control of electric power consumption in large, branched high-voltage electric networks
Keywords
non-Euclidean metric, high-voltage electric network, measurement uncertainty, measurement information, электр энергетикасы, евклидтік емес метрика, электроэнергетика, неевклидова метрика, electric power
Kazakhstan
0/0 Free
periodical press (Magazines)
SKLYAROV N.
Sklyarov, N. Research of the vacuum brake booster working process [Text] / N. Sklyarov, A. Shapovalov , P. Chernenko [et al.] // Қарағанды университетінің хабаршысы. Физика сериясы. - 2024. - Vol. 29, № 1 (113). - P. 43-58. - Bibliogr.: p. 56-57 ISSN 2518-7198.
UDC:
62-59
Subject headings
- Decelerating, braking and stopping devices
Annotation
Object of the research - the working process of the vacuum brake booster. The subject of the research is the increase in the efficiency of vacuum boosters of the brake drive
Keywords
vehicles, active safety, brake system, vacuum brake booster, experimental research, тежеу жүйесі, вакуумдық тежегіш күшейткіш, тормозная система, вакуумный усилитель тормозов
Kazakhstan
0/0 Free
periodical press (Magazines)
KABIDENOV A.
Kabidenov, A. Model companion properties of some theories [Text] / A. Kabidenov, A. Kasatova , M. I. Bekenov [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - Vol. 29, № 2 (114). - P. 114-123. - Bibliogr.: p. 120-121 ISSN 2518-7929.
UDC:
512
Subject headings
- Algebra
Annotation
The paper shows that the formula-definable class of algebraic systems isidempotently formula-definable and is an axiomatizable class of algebraic systems
Keywords
model companion, pseudofinite theory, formula-definable class, smoothly approximated structure, псевдоконечная теория, псевдоақырлы теория, модельдiк компаньон, модельный компаньон
Kazakhstan
0/0 Free
periodical press (Magazines)
APAKOV YU. P.
Apakov, Yu. P. Solution of a boundary value problem for a third-orderinhomogeneous equation with multiple characteristics with theconstruction of the Green’s function [Text] / Yu. P. Apakov, R. A. Umarov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 2 (114). - P. 22-39. - Bibliogr.: p. 34-36 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations
Annotation
In the paper the second boundary value problem in a rectangular domain for an inhomogeneous third-order partial differential equation with multiple characteristics with constant coefficients was considered
Keywords
дифференциалдық теңдеу, функция Грина, дифференциальное уравнени, differential equation, the third order, multiple characteristics,, the second boundary value problem, regular solution, Green’s function, Грин функциясы
Kazakhstan
0/0 Free
periodical press (Magazines)
AKISHEV G.
Akishev, G. On estimates of M-term approximations of the Sobolev class in the Lorentz space [Text] / G. Akishev, A. Kh. Myrzagaliyeva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 2 (114). - P. 4-21. - Bibliogr.: p. 17-18 ISSN 2518-7929.
UDC:
517.518.4
Subject headings
- Trigonometric series
Annotation
In the paper spaces of periodic functions of several variables were considered, namely the Lorentz space L2; (Tm), the class of functions with bounded mixed fractional derivative Wr 2; , 1 < 1, and the order of the best M-term approximation of a function f 2 Lp; (Tm) by trigonometric polynomials was studied
Keywords
Lorentz space, Sobolev class, mixed derivative, trigonometric polynomial, M-term approximation, Соболев класы, Лоренц кеңiстiгi, пространство Лоренца, класс Соболева
Kazakhstan
0/0 Free
periodical press (Magazines)
BEKMAGANBETOV K. A.
Bekmaganbetov, K. A. Homogenization of attractors to Ginzburg-Landau equations inMedia with locally periodic obstacles: sub- and supercritical cases [Text] / K. A. Bekmaganbetov, G. A. Chechkin , V. V. Chepyzhov [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 2 (114). - P. 40-56. - Bibliogr.: p. 53-54 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
The Ginzburg-Landau equation with rapidly oscillating terms in the equation and boundary conditions in aperforated domain was considered
Keywords
porous medium, аттракторлар, Гинсбург-Ландау теңдеулерi, аттракторы, уравнения Гинзбурга-Ландау, homogenization, onlinear equations, weak convergence, perforated domain, attractors, Ginzburg-Landau equations
0/0 Free
periodical press (Magazines)
DEKHKONOV F. N.
Dekhkonov, F. N. On the time-optimal control problem for a fourth order parabolicequation in a two-dimensional domain [Text] / F. N. Dekhkonov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - Vol. 29, № 2 (114). - P. 57-70. - Bibliogr.: p. 66-68 ISSN 2518-7929.
UDC:
517.956.4
Subject headings
- Parabolic equations and systems
Annotation
In this paper, a boundary control problem associated with a fourth-order parabolic equationin a bounded two-dimensional domain was considered
Keywords
initial-boundary problem, fourth-order parabolic equation, admissible control, Volterra integral equation, Laplace transform method, төртiншi реттi параболалық теңдеу, параболическое уравнение четвертого порядка
Kazakhstan
0/0 Free
periodical press (Magazines)
JENALIYEV M. T.
Jenaliyev, M. T. On the spectral problem for three-dimesionalbi-Laplacian in the unit sphere [Text] / M. T. Jenaliyev, A. M. Serik // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - Vol. 29, № 2 (114). - P. 86-104. - Bibliogr.: p. 98-100 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
In this work, a new concept of the stream function and derive the equation for the streamfunction in the three-dimensional case was introduced
Keywords
spectral problem, stream function, Навье-Стокс жүйесi, би-Лапласиан, Navier-Stokes system, bi-Laplacian, cистема Навье-Стокса
Kazakhstan
0/0 Free
periodical press (Magazines)
KALMENOV T. SH.
Kalmenov, T. Sh. On a method for constructing the Green function of the Dirichletproblem for the Laplace equation [Text] / T. Sh. Kalmenov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 2 (114). - P. 105-113. - Bibliogr.: p. 110-111 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
In this work, using the boundary condition of the Newtonian (volume)potential and the spectral property of the potential of a simple layer, the Green function of the Dirichletproblem for the Laplace equation was constructed
Keywords
Green function, Laplace equation, Dirichlet problem, simple layer potential, Лaплaс теңдеуi, Грин функциясы, Дирихле есебi
Kazakhstan
0/0 Free
BEKTASOVA G. S.
STUDY OF THE COPPER STRUCTURE SAMPLES EXTERNED TO EXTREME INFLUENCES
periodical press (Magazines)
0/0 Free
KATSYV S.
APPLICATION OF NON-EUCLIDEAN METRIC IN THE ELECTRIC POWER INDUSTRY FOR REDUCTION OF MEASUREMENT UNCERTAINTY
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
0/0 Free
APAKOV YU. P.
SOLUTION OF A BOUNDARY VALUE PROBLEM FOR A THIRD-ORDERINHOMOGENEOUS EQUATION WITH MULTIPLE CHARACTERISTICS WITH THECONSTRUCTION OF THE GREEN’S FUNCTION
periodical press (Magazines)
0/0 Free
AKISHEV G.
ON ESTIMATES OF M-TERM APPROXIMATIONS OF THE SOBOLEV CLASS IN THE LORENTZ SPACE
periodical press (Magazines)
0/0 Free
BEKMAGANBETOV K. A.
HOMOGENIZATION OF ATTRACTORS TO GINZBURG-LANDAU EQUATIONS INMEDIA WITH LOCALLY PERIODIC OBSTACLES: SUB- AND SUPERCRITICAL CASES
periodical press (Magazines)
0/0 Free
DEKHKONOV F. N.
ON THE TIME-OPTIMAL CONTROL PROBLEM FOR A FOURTH ORDER PARABOLICEQUATION IN A TWO-DIMENSIONAL DOMAIN
periodical press (Magazines)
0/0 Free
JENALIYEV M. T.
ON THE SPECTRAL PROBLEM FOR THREE-DIMESIONALBI-LAPLACIAN IN THE UNIT SPHERE
periodical press (Magazines)
0/0 Free
KALMENOV T. SH.
ON A METHOD FOR CONSTRUCTING THE GREEN FUNCTION OF THE DIRICHLETPROBLEM FOR THE LAPLACE EQUATION
periodical press (Magazines)
0/0 Free