Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Raisa Khamitova"'
Autor:
Nail H. Ibragimov, Raisa Khamitova
Dieses Lehrbuch führt in das Gebiet der Differentialgleichungen und der mathematischen Modellbildung ein. Dabei werden etablierte und moderne Rechenmethoden besprochen und es wird erläutert, wie diese zur mathematischen Modellierung benutzt werden
Publikováno v:
Communications in Nonlinear Science and Numerical Simulation. 20:74-78
In the present paper a quantum drift–diffusion model describing semi-conductor devices is considered. New conservation laws for the model are computed and used to construct exact solutions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e958730e15d476004346420cd02b97f9
https://doi.org/10.1016/j.cnsns.2014.05.020
https://doi.org/10.1016/j.cnsns.2014.05.020
Publikováno v:
Communications in Nonlinear Science and Numerical Simulation. 18:2359-2366
In the present paper, the recent method of conservation laws for constructing exact solutions for systems of nonlinear partial differential equations is applied to the gasdynamic equations describing one-dimensional and three-dimensional polytropic f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::097a50701b3324d8312f138f8fc87c40
https://doi.org/10.1016/j.cnsns.2012.12.023
https://doi.org/10.1016/j.cnsns.2012.12.023
Autor:
Raisa Khamitova, Nail H. Ibragimov
Publikováno v:
The interdisciplinary journal of Discontinuity, Nonlinearity, and Complexity. 2:147-158
Physically significant question on calculation of conservation laws of the Thomas equation is investigated. It is demonstrated that the Thomas equation is nonlinearly self-adjoint. Using this property and applying the theorem on nonlocal conservation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfda696d0662df059f13baf8e326331f
https://doi.org/10.5890/dnc.2013.04.004
https://doi.org/10.5890/dnc.2013.04.004
Publikováno v:
Applied Mathematics and Computation. 218:2579-2583
It is well known that the Camassa–Holm equation possesses numerous remarkable properties characteristic for KdV type equations. In this paper we show that it shares one more property with the KdV equation. Namely, it is shown in [1] , [2] that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ad125531b3ae56f116dc0a799d3549e
https://doi.org/10.1016/j.amc.2011.07.074
https://doi.org/10.1016/j.amc.2011.07.074
Autor:
Raisa Khamitova
Publikováno v:
Communications in Nonlinear Science and Numerical Simulation. 14:3754-3769
In this paper the general magma equation modelling a melt flow in the Earth’s mantle is discussed. Applying the new theorem on nonlocal conservation laws [Ibragimov NH. A new conservation theorem. J Math Anal Appl 2007;333(1):311–28] and using th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b99e47fbf2cb965846b6088ea7ed916c
https://doi.org/10.1016/j.cnsns.2008.08.009
https://doi.org/10.1016/j.cnsns.2008.08.009
Autor:
Ya. N. Istomin, Bo Thidé, Tobia Carozzi, Nail Ibragimov, Jan Bergman, Holger Then, J. Sjöholm, Raisa Khamitova, K. Palmer
Publikováno v:
Thidé, B, Then, H L, Sjöholm, J, Palmer, K, Bergman, J E S, Carozzi, T D, Istomin, Y N, Ibragimov, N H & Khamitova, R 2007, ' Utilization of Photon Orbital Angular Momentum in the Low-Frequency Radio Domain ', Physical Review Letters, vol. 99, no. 8, 087701 . https://doi.org/10.1103/PhysRevLett.99.087701
We show numerically that vector antenna arrays can generate radio beams which exhibit spin and orbital angular momentum characteristics similar to those of helical Laguerre-Gauss laser beams in paraxial optics. For low frequencies (< 1 GHz), digital
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e5671761a7c5a6210cf5f56bc909c8b
https://pubmed.ncbi.nlm.nih.gov/17930983
https://pubmed.ncbi.nlm.nih.gov/17930983
Using a general theorem on conservation laws for arbitrary differential equations proved by Ibragimov, we have derived conservation laws for Dirac's symmetrized Maxwell-Lorentz equations under the assumption that both the electric and magnetic charge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e640f47adaa0e3ea3002d52872672a6b
http://arxiv.org/abs/math-ph/0703018
http://arxiv.org/abs/math-ph/0703018
Publikováno v:
Europe PubMed Central
The goal of this study was to systematize various methodological approaches to evaluating the contamination of the snow cover with heavy metals (HM) by using Kazan, an industrial city with diversified industry, as an example. The findings suggest tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::a16d63aa80b8326957edb63b24f4e0b2
https://pubmed.ncbi.nlm.nih.gov/12861682
https://pubmed.ncbi.nlm.nih.gov/12861682
Publikováno v:
Europe PubMed Central
The indices of mortality due to intoxication by alcohol and its surrogates in a region studied during the 90-ies essentially differ depending on an information source. An analysis of the alcoholic situation in the region and en elaboration of prevent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::f75788905870584ec1aaafec6594470c
https://pubmed.ncbi.nlm.nih.gov/12852047
https://pubmed.ncbi.nlm.nih.gov/12852047