Электронный каталог
Жанр:Естественные науки (natural_sciences)
Результат поиска:
19601-19610 из 22512
периодические издания(Журналы)
БАЛАЕВА Е. А.
Балаева, Е. А. Особенности формирования природных условий на урбанизированных территориях Казахстана [Текст] / Е. А. Балаева // Еңбек гигиенасы және медициналық экология. - 2012. - № 3. - С. 44-50. - Библиогр.: с. 50
ISSN 1727-9712.
УДК:
551.5
Предметная рубрика
- Метеорология. Климатология
Аннотация
В статье приведены оценки параметров климата, которые формируют неблагоприятную погоду в городах Казахстана
Ключевые слова
климат, урбанизированная территория, метеофакторы, климатические условия, метеорология, климатология, неблагоприятная погода
Казахстаника
0/0 Свободно
периодические издания(Журналы)
KENZHINA К. D.
Kenzhina, К. D. Features of the distribution of vegetation cover depending on the physical and geographical location of the northern part of the Kazakh Uplands [Text] / К. D. Kenzhina, A. D. Rustemova , K. A. Tuleshova [et al.] // Қарағанды университетінің хабаршысы. Биология. Медицина. География сериясы. - 2024. - № 4 (116). - P. 205-211. - Bibliogr.: p. 210 ISSN 2518-7201.
УДК:
581.9
Предметная рубрика
- Geographic botany
Аннотация
In the article the peculiarity of the distribution of vegetation cover, due to the natural landscape specifics of the lands of Kazakhstan was noted. In this regard, the object under study - the northern part of Saryarka
Ключевые слова
soil, растительный покров, melkosopochnik, vegetation cover, landscape, climate, plants, өсімдік жамылғысы
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ASHYRALYYEV C.
Ashyralyyev, C. Numerical solution of source identification multi-point problem of parabolic partial differential equation with Neumann type boundary condition [Text] / C. Ashyralyyev, T. A. Ashyralyyeva // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 66-76. - Bibliogr.: p. 74-76 ISSN 2518-7929.
УДК:
517.956.4
Предметная рубрика
- Parabolic equations and systems
Аннотация
Stability estimates for the solution of the overdetermined mixed BVP for multidimensional parabolic equation were established. The first and second order of accuracy difference schemes for the approximate solution of this problem were proposed
Ключевые слова
parabolic equation, difference scheme, nonlocal condition, boundary value problem, well-posedness, stability estimates, mixed problem, inverse problem
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ARIPOV M. M.
Aripov, M. M. On stability of nonlinear difference equations and some of their applications [Text] / M. M. Aripov, D. Utebaev , B. D. Utebaev [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 13-25. - Bibliogr.: p. 23-25 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
The issues of stability in solving nonlinear difference equations were considered
Ключевые слова
a priori estimates, stability, difference schemes, nonlinear difference equations, difference equations
Казахстаника
0/0 Свободно
периодические издания(Журналы)
TASKIN A.
Taskin, A. Source identification problems for the neutron transport equations [Text] / A. Taskin // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 3 (115). - P. 137-149. - Bibliogr.: p. 147-149 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In this study, the time-dependent source identification problem for the two-dimensional neutron transport equation was studied
Ключевые слова
identification problem, neutron transport equation, difference scheme, differential equation, stability inequality
Казахстаника
0/0 Свободно
периодические издания(Журналы)
VALIYEV A. A.
Valiyev, A. A. Spectrum and resolvent of multi-channel systems with internal energies and common boundary conditions [Text] / A. A. Valiyev, M. B. Valiyev , E. H. Huseynov // Қарағанды университетінің хабаршысы. Математика сериясы. - 2025. - № 3 (115). - P. 150-157. - Bibliogr.: p. 157 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In the article the spectrum and resolvent of the so-called multichannel systems with nonzero internal energies were investigated
Ключевые слова
eigenvalues, edge problem, Wronskian, transformation operator, asymptotics, continuous spectrum, resolvent, multi-channel systems, internal energy, quantum physics
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ABIEV N. A.
Abiev, N. A. Structural properties of the sets of positively curved Riemannian metrics on generalized Wallach spaces [Text] / N. A. Abiev // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 4-17. - Bibliogr.: p. 16-17 ISSN 2518-7929.
УДК:
512
Предметная рубрика
- Algebra
Аннотация
In the present paper sets related to invariant Riemannian metrics of positive sectional and (or) Ricci curvature on generalized Wallach spaces are considered
Ключевые слова
generalized Wallach space, Riemannian metric, Kähler metric, normalized Ricci flow, sectional curvature, Ricci curvature, dynamical system, singular point
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ASKARBEKKYZY A.
Askarbekkyzy, A. Punctual numberings for families of sets [Text] / A. Askarbekkyzy Bagaviev , V. Isakov [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 31-40. - Bibliogr.: p. 38-40 ISSN 2518-7929.
УДК:
51
Предметная рубрика
- Mathematics
Аннотация
This work investigates the structure of punctual numberings for families of punctually enumerable sets with respect to primitive recursively reducibility
Ключевые слова
Rogers semilattice, quick functions, punctual numberings, primitive recursive functions, punctually enumerable sets
Казахстаника
0/0 Свободно
периодические издания(Журналы)
BENSASSA K.
Bensassa, K. On solution of non-linear FDE under tempered Ψ−Caputo derivative for the first-order and three-point boundary conditions [Text] / K. Bensassa, M. Benbachir , M. E. Samei [et al.] // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 41-56. - Bibliogr.: p. 54-56 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
In this article, the existence and uniqueness of solutions for non-linear fractional differential equation with Tempered Ψ−Caputo derivative with three-point boundary conditions were studied
Ключевые слова
fractional differential equations, tempered Ψ−Caputo derivative, nonlinear analysis, Schaefer’s fixed point theorem, Banach contraction
Казахстаника
0/0 Свободно
периодические издания(Журналы)
ASHYRALYEV A.
Ashyralyev, A. The compact eighth-order of approximation difference schemes for fourth-order differential equation [Text] / A. Ashyralyev, I. M. Ibrahim // Қарағанды университетінің хабаршысы. Математика сериясы. - 2024. - № 4 (116). - P. 18-30. - Bibliogr.: p. 29-30 ISSN 2518-7929.
УДК:
517.9
Предметная рубрика
- Differential equations
Аннотация
Local and nonlocal boundary value problems (LNBVPs) related to fourth-order differential equations (FODEs) were explored
Ключевые слова
Taylor’s decomposition on five points (TDFP), LNBVPs, DSs, approximation, numerical experiment
Казахстаника
0/0 Свободно
БАЛАЕВА Е. А.
ОСОБЕННОСТИ ФОРМИРОВАНИЯ ПРИРОДНЫХ УСЛОВИЙ НА УРБАНИЗИРОВАННЫХ ТЕРРИТОРИЯХ КАЗАХСТАНА
периодические издания(Журналы)
0/0 Свободно
KENZHINA К. D.
FEATURES OF THE DISTRIBUTION OF VEGETATION COVER DEPENDING ON THE PHYSICAL AND GEOGRAPHICAL LOCATION OF THE NORTHERN PART OF THE KAZAKH UPLANDS
периодические издания(Журналы)
0/0 Свободно
ASHYRALYYEV C.
NUMERICAL SOLUTION OF SOURCE IDENTIFICATION MULTI-POINT PROBLEM OF PARABOLIC PARTIAL DIFFERENTIAL EQUATION WITH NEUMANN TYPE BOUNDARY CONDITION
периодические издания(Журналы)
0/0 Свободно
ARIPOV M. M.
ON STABILITY OF NONLINEAR DIFFERENCE EQUATIONS AND SOME OF THEIR APPLICATIONS
периодические издания(Журналы)
0/0 Свободно
TASKIN A.
SOURCE IDENTIFICATION PROBLEMS FOR THE NEUTRON TRANSPORT EQUATIONS
периодические издания(Журналы)
0/0 Свободно
VALIYEV A. A.
SPECTRUM AND RESOLVENT OF MULTI-CHANNEL SYSTEMS WITH INTERNAL ENERGIES AND COMMON BOUNDARY CONDITIONS
периодические издания(Журналы)
0/0 Свободно
ABIEV N. A.
STRUCTURAL PROPERTIES OF THE SETS OF POSITIVELY CURVED RIEMANNIAN METRICS ON GENERALIZED WALLACH SPACES
периодические издания(Журналы)
0/0 Свободно
периодические издания(Журналы)
0/0 Свободно
BENSASSA K.
ON SOLUTION OF NON-LINEAR FDE UNDER TEMPERED Ψ−CAPUTO DERIVATIVE FOR THE FIRST-ORDER AND THREE-POINT BOUNDARY CONDITIONS
периодические издания(Журналы)
0/0 Свободно
ASHYRALYEV A.
THE COMPACT EIGHTH-ORDER OF APPROXIMATION DIFFERENCE SCHEMES FOR FOURTH-ORDER DIFFERENTIAL EQUATION
периодические издания(Журналы)
0/0 Свободно