Electronic catalog
Genre:Естественные науки (natural_sciences)
Search result:
19471-19480 of 22528
periodical press (Magazines)
AISAGALIEV S.
Aisagaliev, S. Controllability and optimal fast operation of nonlinear systems [Text] / S. Aisagaliev, G. Korpebay // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 77-92. - Bibliogr.: p. 91-92 ISSN 2518-7929.
UDC:
517.957
Subject headings
- Nonlinear equations and systems
Annotation
A new method for solving the problem of controllability and optimal transient behavior of nonlinear systems subject to boundary conditions and constraints on control values was proposed
Keywords
integrity constraints, integral equation, optimal performance, functional gradient, nonlinear systems
Kazakhstan
0/0 Free
periodical press (Magazines)
ASHYRALIYEV M.
Ashyraliyev, M. A stable difference scheme for the solution of a source identification problem for telegraph-parabolic equations [Text] / M. Ashyraliyev, M. A. Ashyralyyeva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 46-54. - Bibliogr.: p. 52-53 ISSN 2518-7929.
UDC:
517.956.4
Subject headings
- Parabolic equations and systems
Annotation
In the present paper, a first order of accuracy difference scheme for the approximate solution of the inverse problem for telegraph-parabolic equations with an unknown spacewise dependent source term is constructed
Keywords
Difference scheme, source identification problem, telegraph-parabolic equation, stability estimates, differential equations
Kazakhstan
0/0 Free
periodical press (Magazines)
NAURYZBAYEV B. A.
Nauryzbayev, B. A. Improving mathematical problem-sol ving skills with an intelligent self-learning system : a randomized controlled trial study [Text] / B. A. Nauryzbayev, Zh. Zh. Akhmetova , N. I. Pak [and others] // Алматы энергетика және байланыс университетінің хабаршысы. - 2023. - № 3. - 67-77 р.. - Bibliogr.: 76 p.
ISSN 2790-0886.
UDC:
519.85
Subject headings
- Mathematical programming
Annotation
The article discusses an intelligent self-learning system for analyzing the learning process of solving mathematical problems
Keywords
Ml.net, machine learning, mathematics and artificial intelligence, mathematical programming, neural networks, artificial intelligence, artificial intelligence methods, solving mathematical problems
Kazakhstan
0/0 Free
periodical press (Magazines)
ASHUROV R. R.
Ashurov, R. R. On a non-local problem for a fractional differential equation of the Boussinesq type [Text] / R. R. Ashurov, Yu. E. Fayziev , M. U. Khudoykulova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 34-45. - Bibliogr.: p. 44-45 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations
Annotation
In this paper, a non-local problem for the Boussinesq type equation Dαtu(t) +ADαtu(t) +ν2Au(t) = 0,0< t < T,1< α <3/2 is studied, where Dαt is the Caputo fractional derivative, and A is an abstract operator
Keywords
fractional equation, Caputo derivative, forward and inverse problems, Fourier method, Boussinesq type
Kazakhstan
0/0 Free
periodical press (Magazines)
KUTLAY H.
Kutlay, H. Existence of extremal solutions for a class of fractional integro-differential equations [Text] / H. Kutlay, A. Yakar // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 112-125. - Bibliogr.: p. 124-125 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations
Annotation
In the study, the existence of solutions of a class of fractional integro-differential equations with boundary conditions was considered
Keywords
Caputo derivative, extremal solutions, integro-differential equation, Riemann-Liouville integral, monotone iterative technique, upper and lower solutions
Kazakhstan
0/0 Free
periodical press (Magazines)
OLĞAR H.
Olğar, H. Operator-pencil treatment of multi-interval Sturm-Liouville equation with boundary-transmission conditions [Text] / H. Olğar, F. Muhtarov , O. Mukhtarov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 126-136. - Bibliogr.: p. 134-135 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations. Integral equations
Annotation
This paper is devoted to a new type of boundary-value problems for Sturm-Liouville equations defined on three disjoint intervals (−π, −π+d),(−π+d, π−d), and (π−d, π) together with eigenparameter dependent boundary conditions and with additional transmission conditions specified at the common end points −π+d and π−d, where 0< d < π
Keywords
eigenvalues, transmission conditions, boundary-value-transmission problems, generalized eigenfunctions, lower boundestimation, Rayleigh’s method
Kazakhstan
0/0 Free
periodical press (Magazines)
ALIYEV N.
Aliyev, N. The boundary value problem for an ordinary linear half-order differential equation [Text] / N. Aliyev, M. Rasulov , B. Sinsoysal // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 5-12. - Bibliogr.: p. 11 ISSN 2518-7929.
UDC:
517.9
Subject headings
- Differential equations
Annotation
This study is devoted to the study of the solution of a boundary value problem for an ordinary lineardifferential equation of half order with constant coefficients
Keywords
half-order equations, boundary value problem, fundamental solution, Fredholm property, Mittag-Leffler functions, fundamental solution, basic relation
Kazakhstan
0/0 Free
periodical press (Magazines)
ARTYKBAEV A.
Artykbaev, A. Geometric approach to define a railway plan model [Text] / A. Artykbaev, M. M. Toshmatova // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 26-33. - Bibliogr.: p. 32-33 ISSN 2518-7929.
UDC:
51
Subject headings
- Mathematics
Annotation
In the work, it is proposed to draw up a plan of a railway track as two curves, one of which is flat, and the other depicts an external spatial rail
Keywords
osculating circle, angle ofrotation, vector equation, Frenier’s formula, railway plan, route, urvature, torsion, osculating plane, car motion profile
Kazakhstan
0/0 Free
periodical press (Magazines)
СЫРЫМ Ж. С.
Сырым, Ж. С. Комплекс сандардың физикалық мәнін ашудың әдістемелік жолдары [Мәтін] / Ж. С. Сырым, Н. К. Жакиев , М. Ш. Нұрмағамбетов [ж. б.] // Ғылым және білім. - 2008. - № 1 (10). - 74-80 б. - Библиогр.: 80 б. ISSN
UDC:
511
Subject headings
- Сандар теориясы
Annotation
Мақалада комплекс сандардың физикалық мағынасы қарастырылған
Keywords
сандық модельдеу, физикалық есептер , комплекс сандар , математика
Kazakhstan
0/0 Free
periodical press (Magazines)
САСПУГАЕВА Г. Е.
Саспугаева, Г. Е. Потенциал загрязнения атмосферы на территории Республики Казахстан по данным реанализа ERA5 за 2021 год [Текст] / Г. Е. Саспугаева, Г. С. Актаева , Ә. М. Жакен [и др.] // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2024. - № 3 (115). - С. 150-156. - Библиогр.: с. 154-155 ISSN 2518-7201.
UDC:
504.3.054(574)
Subject headings
- Загрязнение атмосферы. Загрязнение воздуха
Annotation
В статье рассчитан потенциал загрязнения атмосферы в пограничном слое атмосферы, по данным реанализа ERA5, и описан характер его распределения по территории Казахстан, выявлены области наибольшей и наименьшей повторяемости условий формирования потенциала загрязнения атмосферы
Keywords
осадки, скорость ветра, атмосфера, атмосферный воздух, загрязнение атмосферы, температурные инверсии
Kazakhstan
0/0 Free
AISAGALIEV S.
CONTROLLABILITY AND OPTIMAL FAST OPERATION OF NONLINEAR SYSTEMS
periodical press (Magazines)
0/0 Free
ASHYRALIYEV M.
A STABLE DIFFERENCE SCHEME FOR THE SOLUTION OF A SOURCE IDENTIFICATION PROBLEM FOR TELEGRAPH-PARABOLIC EQUATIONS
periodical press (Magazines)
0/0 Free
NAURYZBAYEV B. A.
IMPROVING MATHEMATICAL PROBLEM-SOL VING SKILLS WITH AN INTELLIGENT SELF-LEARNING SYSTEM : A RANDOMIZED CONTROLLED TRIAL STUDY
periodical press (Magazines)
0/0 Free
ASHUROV R. R.
ON A NON-LOCAL PROBLEM FOR A FRACTIONAL DIFFERENTIAL EQUATION OF THE BOUSSINESQ TYPE
periodical press (Magazines)
0/0 Free
KUTLAY H.
EXISTENCE OF EXTREMAL SOLUTIONS FOR A CLASS OF FRACTIONAL INTEGRO-DIFFERENTIAL EQUATIONS
periodical press (Magazines)
0/0 Free
OLĞAR H.
OPERATOR-PENCIL TREATMENT OF MULTI-INTERVAL STURM-LIOUVILLE EQUATION WITH BOUNDARY-TRANSMISSION CONDITIONS
periodical press (Magazines)
0/0 Free
ALIYEV N.
THE BOUNDARY VALUE PROBLEM FOR AN ORDINARY LINEAR HALF-ORDER DIFFERENTIAL EQUATION
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
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periodical press (Magazines)
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САСПУГАЕВА Г. Е.
ПОТЕНЦИАЛ ЗАГРЯЗНЕНИЯ АТМОСФЕРЫ НА ТЕРРИТОРИИ РЕСПУБЛИКИ КАЗАХСТАН ПО ДАННЫМ РЕАНАЛИЗА ERA5 ЗА 2021 ГОД
periodical press (Magazines)
0/0 Free