Zobrazeno 1 - 10
of 2 400
pro vyhledávání: '"Akhrem, A. A."'
Publikováno v:
In Molecular Catalysis August 2022 529
Publikováno v:
Matematika i Matematičeskoe Modelirovanie, Vol 0, Iss 3, Pp 29-45 (2021)
The paper studies problems of reduction (decomposition) of OLAP-hypercube multidimensional data models. When decomposing large hyper-cubes of multidimensional data into sub-cube components the goal is to increase the computational performance of anal
Externí odkaz:
https://doaj.org/article/3a6c6e9c43764c668cc835843e3172e7
Publikováno v:
Matematika i Matematičeskoe Modelirovanie, Vol 0, Iss 1, Pp 27-42 (2021)
The article investigates the problems of reduction (decomposition) of multidimensional data models in terms of hypercube OLAP-structures. Describes the case when a data structure is defined by the array that slices and dices the hypercube into the od
Externí odkaz:
https://doaj.org/article/be250d5ccd5d4c139a97c80f175f65ce
Publikováno v:
Matematika i Matematičeskoe Modelirovanie, Vol 0, Iss 5, Pp 13-32 (2021)
The paper presents the interchangeability conditions for the finite-dimensional, infinite-dimensional, and discrete models of dynamics of autonomous processes and, using the one-dimensional processes as an example, shows that with the certain ratio o
Externí odkaz:
https://doaj.org/article/75a9925878e04ee6899e4b96af4d3007
Autor:
Akhrem, Irena S., Afanas’eva, Lyudmila V., Avetisyan, Dzhul’etta V., Artyushin, Oleg I., Kagramanov, Nikolai D.
Publikováno v:
In Mendeleev Communications March-April 2020 30(2):238-240
Autor:
Borisov, Yurii A., Akhrem, Irena S. *
Publikováno v:
In Molecular Catalysis February 2020 482
Publikováno v:
Matematika i Matematičeskoe Modelirovanie, Vol 0, Iss 4, Pp 52-64 (2020)
The paper investigates the problems of reduction (decomposition) of multidimensional data models in the form of hypercube OLAP structures. OLAP data processing does not allow changes in the dimension of space. With the increase in data volumes, the p
Externí odkaz:
https://doaj.org/article/8be344fa1c6a416189a3bb644b13d79e
Autor:
A. A. Akhrem, A. P. Nosov
Publikováno v:
Matematika i Matematičeskoe Modelirovanie, Vol 0, Iss 3, Pp 1-14 (2020)
One of the important directions of the qualitative theory of ordinary differential equations is to study the properties of linear systems that satisfy the condition of integral separation. Anyway, integral separation becomes apparent in all studies c
Externí odkaz:
https://doaj.org/article/9c599fcc2a3d4b07814f590751f32a14
Publikováno v:
Matematika i Matematičeskoe Modelirovanie, Vol 0, Iss 5, Pp 32-48 (2020)
The aim of the paper is to estimate the minimum appropriate number of nodes on a uniform grid (maximum integration step) to obtain a given accuracy for the finite-difference Runge-Kutta methods of the first and second orders of accuracy for the Dahlq
Externí odkaz:
https://doaj.org/article/8ac77d96b1c94df28058b00f1efd855f
Autor:
Borisov, Yurii A., Akhrem, Irena S.
Publikováno v:
In Mendeleev Communications May-June 2019 29(3):343-345