Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Nikita S. Novikov"'
Autor:
Andrey O. Drachuk, Alexandr A. Kibkalo, Danila V. Kreven, Nadezhda S. Molokitina, Nikita S. Novikov, Klavdia A. Pletneva
Publikováno v:
Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy. 8:10-22
In recent years, there has been an increased interest in the search for environmentally friendly and biodegradable substances that prevent gas hydrate formation — hydrate inhibitors. Generally, the study of the influence of inhibitors on the hydrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e39ceab23e46446e9bc26c4cedd0469
https://doi.org/10.21684/2411-7978-2022-8-3-10-22
https://doi.org/10.21684/2411-7978-2022-8-3-10-22
Publikováno v:
Journal of Inverse and Ill-posed Problems. 28:287-297
We investigate the mathematical modeling of the 2D acoustic waves propagation, based on the conservation laws. The hyperbolic first-order system of partial differential equations is considered and solved by the method of S. K. Godunov. The inverse pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57e1232d227cc70219e8ccdd7fedbf31
https://doi.org/10.1515/jiip-2019-0061
https://doi.org/10.1515/jiip-2019-0061
Publikováno v:
Mathematics, Vol 9, Iss 199, p 199 (2021)
Mathematics
Volume 9
Issue 2
Mathematics
Volume 9
Issue 2
We consider the coefficient inverse problem for the first-order hyperbolic system, which describes the propagation of the 2D acoustic waves in a heterogeneous medium. We recover both the denstity of the medium and the speed of sound by using a finite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26ecc1aada85f5dd361fdb01074ab8f4
https://www.mdpi.com/2227-7390/9/2/199
https://www.mdpi.com/2227-7390/9/2/199
Autor:
Sergey Kabanikhin, Nikita S. Novikov, Alexander Gasnikov, Artem Vasin, Maxim A. Shishlenin, Vladislav Matyukhin
Publikováno v:
Mathematical Optimization Theory and Operations Research ISBN: 9783030778750
MOTOR
MOTOR
In this paper, we propose the gradient descent type methods to solve convex optimization problems in Hilbert space. We apply it to solve the ill-posed Cauchy problem for the Poisson equation and make a comparative analysis with the Landweber iteratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0d15e0234d2e9971079c4e98175162f
https://doi.org/10.1007/978-3-030-77876-7_11
https://doi.org/10.1007/978-3-030-77876-7_11
Publikováno v:
Continuum Mechanics, Applied Mathematics and Scientific Computing: Godunov's Legacy ISBN: 9783030388690
We investigate the mathematical modeling of the 2D acoustic waves propagation. We solve the hyperbolic first order system of partial differential equations by the method of S. K. Godunov. The inverse problem of reconstructing the density of the mediu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7d80f3f7dcf4054530f62635d1c759b
https://doi.org/10.1007/978-3-030-38870-6_28
https://doi.org/10.1007/978-3-030-38870-6_28
Autor:
M. A. Shishlenin, A. E. Ryazantsev, B. M. Glinskiy, Nikita S. Novikov, Igor Kulikov, I. G. Chernykh, R. Z. Kurmangaliev, S. I. Kabanikhin, S. A. Kalinin, Jsc Geologika, Anna Sapetina
Publikováno v:
Vestnik NSU. Series: Information Technologies. 16:61-73
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c89a82d77142421f0de3bb4295036f02
https://doi.org/10.25205/1818-7900-2018-16-1-61-73
https://doi.org/10.25205/1818-7900-2018-16-1-61-73
Publikováno v:
Journal of Physics: Conference Series. 2092:012022
In this article we propose the numerical solution of the one dimensional inverse coefficient problem for seismic equation. We use a dynamical version of Gelfand-Levitan-Krein approach for reducing a nonlinear inverse problem for recovering the shear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bca3a59cca1ff570b820502f0fb3221
https://doi.org/10.1088/1742-6596/2092/1/012022
https://doi.org/10.1088/1742-6596/2092/1/012022
Publikováno v:
Journal of Physics: Conference Series. 2092:012004
Reconstruction of acoustic parameter such as acoustic velocity considers as part of inverse problems for mathematical physics and reasonable reconstruction of this parameter will assist solving interrelated problem such as inversion and imaging which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83ec3b8b2d46b93314daf0ce46d0615f
https://doi.org/10.1088/1742-6596/2092/1/012004
https://doi.org/10.1088/1742-6596/2092/1/012004
Publikováno v:
Journal of Computational Physics. 439:110374
Numerical solution of inverse problem for 2D acoustic system of conservation laws by gradient type method requires storage of O ( N 3 ) elements which is crucial on large grids with O ( N ) points in single dimension. In this article we present an ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa9ba662279d8dbca32b55356bb904fb
https://doi.org/10.1016/j.jcp.2021.110374
https://doi.org/10.1016/j.jcp.2021.110374
Publikováno v:
Journal of Physics: Conference Series. 1715:012038
In this paper the problem of modeling the acoustic radiation pattern of source is considered. The problem is formulated in the form of control problem for the 2D first-order system of hyperbolic equations. This problem is related to ultrasound tomogr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ac392d8a288b1c37bc8a9961d3110b5
https://doi.org/10.1088/1742-6596/1715/1/012038
https://doi.org/10.1088/1742-6596/1715/1/012038