Электронный каталог
Язык издания:Английский
Каталог:Статьи
Результат поиска:
581-590 из 2265
периодические издания(Журналы)
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.
УДК:
539
Предметная рубрика
- Physical nature of matter
Аннотация
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
Ключевые слова
explosion processing, мыс үлгілері, copper samples, plastic deformation, electromagnetic wave flow, ignition zone, кристалдық құрылым, медные образцы, кристаллическая структура
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
621.3.01
Предметная рубрика
- Electrical engineering
Аннотация
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
Ключевые слова
non-Euclidean metric, high-voltage electric network, measurement uncertainty, measurement information, электр энергетикасы, евклидтік емес метрика, электроэнергетика, неевклидова метрика, electric power
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
62-59
Предметная рубрика
- Decelerating, braking and stopping devices
Аннотация
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
Ключевые слова
vehicles, active safety, brake system, vacuum brake booster, experimental research, тежеу жүйесі, вакуумдық тежегіш күшейткіш, тормозная система, вакуумный усилитель тормозов
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
512
Предметная рубрика
- Algebra
Аннотация
The paper shows that the formula-definable class of algebraic systems isidempotently formula-definable and is an axiomatizable class of algebraic systems
Ключевые слова
model companion, pseudofinite theory, formula-definable class, smoothly approximated structure, псевдоконечная теория, псевдоақырлы теория, модельдiк компаньон, модельный компаньон
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
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
Ключевые слова
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
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
517.518.4
Предметная рубрика
- Trigonometric series
Аннотация
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
Ключевые слова
Lorentz space, Sobolev class, mixed derivative, trigonometric polynomial, M-term approximation, Соболев класы, Лоренц кеңiстiгi, пространство Лоренца, класс Соболева
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
The Ginzburg-Landau equation with rapidly oscillating terms in the equation and boundary conditions in aperforated domain was considered
Ключевые слова
porous medium, аттракторлар, Гинсбург-Ландау теңдеулерi, аттракторы, уравнения Гинзбурга-Ландау, homogenization, onlinear equations, weak convergence, perforated domain, attractors, Ginzburg-Landau equations
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
517.956.4
Предметная рубрика
- Parabolic equations and systems
Аннотация
In this paper, a boundary control problem associated with a fourth-order parabolic equationin a bounded two-dimensional domain was considered
Ключевые слова
initial-boundary problem, fourth-order parabolic equation, admissible control, Volterra integral equation, Laplace transform method, төртiншi реттi параболалық теңдеу, параболическое уравнение четвертого порядка
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
In this work, a new concept of the stream function and derive the equation for the streamfunction in the three-dimensional case was introduced
Ключевые слова
spectral problem, stream function, Навье-Стокс жүйесi, би-Лапласиан, Navier-Stokes system, bi-Laplacian, cистема Навье-Стокса
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
517.9
Предметная рубрика
- Differential equations. Integral equations
Аннотация
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
Ключевые слова
Green function, Laplace equation, Dirichlet problem, simple layer potential, Лaплaс теңдеуi, Грин функциясы, Дирихле есебi
Казахстаника
0/0 Свободно
BEKTASOVA G. S.
STUDY OF THE COPPER STRUCTURE SAMPLES EXTERNED TO EXTREME INFLUENCES
периодические издания(Журналы)
0/0 Свободно
KATSYV S.
APPLICATION OF NON-EUCLIDEAN METRIC IN THE ELECTRIC POWER INDUSTRY FOR REDUCTION OF MEASUREMENT UNCERTAINTY
периодические издания(Журналы)
0/0 Свободно
периодические издания(Журналы)
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периодические издания(Журналы)
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APAKOV YU. P.
SOLUTION OF A BOUNDARY VALUE PROBLEM FOR A THIRD-ORDERINHOMOGENEOUS EQUATION WITH MULTIPLE CHARACTERISTICS WITH THECONSTRUCTION OF THE GREEN’S FUNCTION
периодические издания(Журналы)
0/0 Свободно
AKISHEV G.
ON ESTIMATES OF M-TERM APPROXIMATIONS OF THE SOBOLEV CLASS IN THE LORENTZ SPACE
периодические издания(Журналы)
0/0 Свободно
BEKMAGANBETOV K. A.
HOMOGENIZATION OF ATTRACTORS TO GINZBURG-LANDAU EQUATIONS INMEDIA WITH LOCALLY PERIODIC OBSTACLES: SUB- AND SUPERCRITICAL CASES
периодические издания(Журналы)
0/0 Свободно
DEKHKONOV F. N.
ON THE TIME-OPTIMAL CONTROL PROBLEM FOR A FOURTH ORDER PARABOLICEQUATION IN A TWO-DIMENSIONAL DOMAIN
периодические издания(Журналы)
0/0 Свободно
JENALIYEV M. T.
ON THE SPECTRAL PROBLEM FOR THREE-DIMESIONALBI-LAPLACIAN IN THE UNIT SPHERE
периодические издания(Журналы)
0/0 Свободно
KALMENOV T. SH.
ON A METHOD FOR CONSTRUCTING THE GREEN FUNCTION OF THE DIRICHLETPROBLEM FOR THE LAPLACE EQUATION
периодические издания(Журналы)
0/0 Свободно