发布求助
文献互助 智能选刊 最新文献

USSR Computational Mathematics and Mathematical Physics最新文献

筛选
英文 中文
A difference scheme for a non-linear singularly perturbed second-order equation 一类非线性奇摄动二阶方程的差分格式
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90167-Q
A.I. Zadorin, V.N. Ignat'yev
{"title":"A difference scheme for a non-linear singularly perturbed second-order equation","authors":"A.I. Zadorin, V.N. Ignat'yev","doi":"10.1016/0041-5553(90)90167-Q","DOIUrl":"10.1016/0041-5553(90)90167-Q","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 107-111"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90167-Q","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88256246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Weighted estimate of the Monte-Carlo method for calculating the higher moments of the additive transport characteristics of multiplying particles 加权估计的蒙特卡罗方法计算的高矩的附加输运特性的倍增粒子
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90011-G
A.V. Lappa
{"title":"Weighted estimate of the Monte-Carlo method for calculating the higher moments of the additive transport characteristics of multiplying particles","authors":"A.V. Lappa","doi":"10.1016/0041-5553(90)90011-G","DOIUrl":"10.1016/0041-5553(90)90011-G","url":null,"abstract":"<div><p>A closed Integral representation is given for a moment of an arbitrary order of an arbitrary additive stochastic characteristic of a cascade process involving the transport of particles in a substance. An unbiased non-simulation estimate of the Monte-Carlo method is proposed for calculating such moments on the trajectories of a branching Markov process with discrete time. An example of the efficient use of the estimate is given.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 1","pages":"Pages 91-100"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90011-G","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73433610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Comparison of two-numerical methods for solving the problem of the diffraction of an E-polarized plane wave by an ideally conducting periodic surface 求解e偏振平面波经理想导电周期表面衍射问题的两种数值方法的比较
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90188-X
V.A. Korneyev, A.G. Mikheyev, E.Yu. Rabotnova, A.S. Shamayev
{"title":"Comparison of two-numerical methods for solving the problem of the diffraction of an E-polarized plane wave by an ideally conducting periodic surface","authors":"V.A. Korneyev,&nbsp;A.G. Mikheyev,&nbsp;E.Yu. Rabotnova,&nbsp;A.S. Shamayev","doi":"10.1016/0041-5553(90)90188-X","DOIUrl":"10.1016/0041-5553(90)90188-X","url":null,"abstract":"<div><p>The method of collocation and the “integral equation” method, which is based on the use of the fast Fourier transform, are compared. The two algorithms are described and the results of numerical calculations of the surface currents and amplitudes of the non-decaying reflected plane waves obtained by the two methods are presented. Tables of the energy defects, the normalized difference of the solutions in <em>L</em><sub>2</sub>[0,2<em>π</em>] and the times required to carry out calculations on a ES-1055 digital computer are given. The operation of the two algorithms is analysed.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 3","pages":"Pages 41-46"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90188-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73876166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ablation of large meteors during radiative heating 大流星在辐射加热过程中的消融
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90124-B
P.I. Chushkin, A.K. Sharipov
{"title":"Ablation of large meteors during radiative heating","authors":"P.I. Chushkin,&nbsp;A.K. Sharipov","doi":"10.1016/0041-5553(90)90124-B","DOIUrl":"10.1016/0041-5553(90)90124-B","url":null,"abstract":"<div><p>A problem in radiative gas dynamics concerning the removal of mass and the change in shape of a large cosmic body caused by heating due to the emission of the shock layer on entering the earth's atmosphere is solved. The equations of motion of an ablating body are calculated simultaneously with the determination of the aerodynamic forces and the radiative thermal fluxes. The spectral emission is treated in the diffusion approximation and under the assumption of a locally one-dimensional optically planar layer. The results of calculations for three natural cosmic objects belonging to different classes (stony and iron meteorites and a snow-ice comet body) are presented.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 6","pages":"Pages 154-162"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90124-B","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81923681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Averaging of a problem in the elastic theory of a non-symmetric layered membrane 非对称层状膜弹性理论中一个问题的平均
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90068-4
M.V. Reztsov
{"title":"Averaging of a problem in the elastic theory of a non-symmetric layered membrane","authors":"M.V. Reztsov","doi":"10.1016/0041-5553(90)90068-4","DOIUrl":"https://doi.org/10.1016/0041-5553(90)90068-4","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 217-218"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90068-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91684364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integer minimization of fractional-separable functions 分数可分函数的整数极小化
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90170-W
G.B. Rubal'skii
{"title":"Integer minimization of fractional-separable functions","authors":"G.B. Rubal'skii","doi":"10.1016/0041-5553(90)90170-W","DOIUrl":"10.1016/0041-5553(90)90170-W","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 124-132"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90170-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82722241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An investigation of the stability of certain two-layer difference schemes 若干双层差分格式的稳定性研究
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90015-K
N.Yu. Bakayev
{"title":"An investigation of the stability of certain two-layer difference schemes","authors":"N.Yu. Bakayev","doi":"10.1016/0041-5553(90)90015-K","DOIUrl":"10.1016/0041-5553(90)90015-K","url":null,"abstract":"<div><p>Estimates of the stability of weighted difference schemes in the norms of Banach spaces are constructed. On the basis of these, corresponding estimates are obtained for the stability, in the norms of the spaces <em>C</em><sub><em>h</em></sub> and <em>L</em><sub><em>ph</em></sub>, 1 ⩽ <em>p</em> ∞, of difference schemes which approximate an initial-boundary value problem for the heat-conduction equation with boundary conditions of the first, second and third kinds.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 1","pages":"Pages 114-117"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90015-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86067907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two methods for solving the problem of heat transfer in a rarefied gas 解决稀薄气体传热问题的两种方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90097-C
V.V. Aristov, M.S. Ivanov, F.G. Cheremisin
{"title":"Two methods for solving the problem of heat transfer in a rarefied gas","authors":"V.V. Aristov,&nbsp;M.S. Ivanov,&nbsp;F.G. Cheremisin","doi":"10.1016/0041-5553(90)90097-C","DOIUrl":"10.1016/0041-5553(90)90097-C","url":null,"abstract":"<div><p>The problem of stationary one-dimensional heat flow between parallel flat surfaces in a rarefied gas is solved using two independent numerical methods: the finite difference method of direct solution of the Boltzmann equation and the method of direct statistical simulation. By comparing the results, the accuracy of the methods is established and the algorithms for solving the problem are verified. The features of the flow are investigated for a wide range of Knudsen numbers.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 2","pages":"Pages 193-195"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90097-C","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80898337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Asymptotic behaviour of rapidly oscillating contrasting spatial structures 快速振荡对比空间结构的渐近行为
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90028-Q
S.A. Kashchenko
{"title":"Asymptotic behaviour of rapidly oscillating contrasting spatial structures","authors":"S.A. Kashchenko","doi":"10.1016/0041-5553(90)90028-Q","DOIUrl":"10.1016/0041-5553(90)90028-Q","url":null,"abstract":"<div><p>The asymptotic behaviour of equilibria that rapidly oscillate in the spatial coordinate in a system of two nonlinear parabolic equations with a sufficiently small diffusion coefficient in one of them is investigated. The normalization method is applied to show that the local dynamics of the original system with a small parameter multiplying one of the high-order derivatives is determined by the non-local behaviour of the solutions of a family of special boundary-value problems that are independent of the small parameter.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 1","pages":"Pages 186-197"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90028-Q","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81774566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An iterative method of quasi-solution in problems of diffraction by dielectric bodies 介电体衍射问题准解的迭代方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90009-H
Yu.A. Eremin, A.G. Sveshnikov
{"title":"An iterative method of quasi-solution in problems of diffraction by dielectric bodies","authors":"Yu.A. Eremin,&nbsp;A.G. Sveshnikov","doi":"10.1016/0041-5553(90)90009-H","DOIUrl":"10.1016/0041-5553(90)90009-H","url":null,"abstract":"<div><p>The solution of the problem of diffraction by a uniform dielectric body is reduced to the solution of a system of integral equations of the first kind over the boundary. The method of minimum discrepancies is used to construct an approximate solution, and the necessary condition for it to converge is obtained.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 1","pages":"Pages 74-79"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0041-5553(90)90009-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83597962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书