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
Chebyshev acceleration of the schwarz alternation process 施瓦兹交替过程的切比雪夫加速
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90077-6
S.A. Sander
{"title":"Chebyshev acceleration of the schwarz alternation process","authors":"S.A. Sander","doi":"10.1016/0041-5553(90)90077-6","DOIUrl":"10.1016/0041-5553(90)90077-6","url":null,"abstract":"<div><p>Chebyshev acceleration of a difference analogue of the Schwarz alternation process is considered. Estimates for the rate of convergence, in the <em>W</em><sub>2<em>h</em></sub><sup>1</sup> norm, are presented.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 2","pages":"Pages 62-67"},"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)90077-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77243136","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
The maximum principle residual functional in optimal control theory 最优控制理论中的最大原理残差泛函
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90053-U
M.I. Sumin
{"title":"The maximum principle residual functional in optimal control theory","authors":"M.I. Sumin","doi":"10.1016/0041-5553(90)90053-U","DOIUrl":"10.1016/0041-5553(90)90053-U","url":null,"abstract":"<div><p>The possibilities of applying results related to the so-called maximum principle residual functional to justify and design algorithms for solving optimal control problems and discussed. The differential properties of the value function of the optimal control problem are established. A dual method for solving the optimal control problem, based on maximizing the value function of a modified Lagrange functional, is described.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 117-129"},"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)90053-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77631730","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
Numerical solution of a quasilinear parabolic equation with a boundary layer 一类带边界层的拟线性抛物方程的数值解
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90190-4
I.P. Boglayev
{"title":"Numerical solution of a quasilinear parabolic equation with a boundary layer","authors":"I.P. Boglayev","doi":"10.1016/0041-5553(90)90190-4","DOIUrl":"10.1016/0041-5553(90)90190-4","url":null,"abstract":"<div><p>To solve a quasilinear parabolic equation with small parameter multiplying the derivatives with respect to the spatial variables, a numerical method is constructed with an estimate of the error, which is uniform with respect to the parameter. The construction of a nonlinear difference scheme is based on the method of straight lines and on the application of exact systems to one-dimensional problems. The computational mesh is chosen so that its density increases in a suitable way in the neighbourhood of the boundary. We propose that the nonlinear scheme be solved by an iterative algorithm, which converges uniformly with respect to the small parameter.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 3","pages":"Pages 55-63"},"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)90190-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91487894","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: 14
The Korteweg-de Vries, Kadomtsev-Petviashvili and Boussinesq equations. Modulation theory Korteweg-de Vries, Kadomtsev-Petviashvili和Boussinesq方程。调制理论
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90173-P
V.N. Bogayevskii
{"title":"The Korteweg-de Vries, Kadomtsev-Petviashvili and Boussinesq equations. Modulation theory","authors":"V.N. Bogayevskii","doi":"10.1016/0041-5553(90)90173-P","DOIUrl":"10.1016/0041-5553(90)90173-P","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 148-159"},"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)90173-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91292180","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
Localized compression regimes in a heat-conducting gas 热传导气体的局部压缩状态
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90088-A
V.V. Gudkov, A.P. Mikhailov, V.V. Stepanova
{"title":"Localized compression regimes in a heat-conducting gas","authors":"V.V. Gudkov,&nbsp;A.P. Mikhailov,&nbsp;V.V. Stepanova","doi":"10.1016/0041-5553(90)90088-A","DOIUrl":"10.1016/0041-5553(90)90088-A","url":null,"abstract":"<div><p>The effect of limiting regimes with peaking on a compressible sphere with thermal conductivity <em>χ</em> = <em>χ</em><sub>0</sub><em>ρ</em><sup><em>α</em></sup><em>T</em><sup><em>β</em></sup>, <em>β</em> &gt; 0, is examined. The investigation is carried out for selfsimilar solutions of the power type. Conditions are established for shockless supercompression of the material and joint localization of the thermal and gas-dynamic processes, which depend on the thermophysical properties of the medium and the limiting law. The phenomena are also investigated numerically.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 2","pages":"Pages 130-138"},"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)90088-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90575549","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
Decomposition in extremal problems of special structure 特殊结构极值问题的分解
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90041-P
I.S. Litvinchev
{"title":"Decomposition in extremal problems of special structure","authors":"I.S. Litvinchev","doi":"10.1016/0041-5553(90)90041-P","DOIUrl":"10.1016/0041-5553(90)90041-P","url":null,"abstract":"<div><p>A decomposition method based on aggregated macrovariables is proposed for optimization problems in which some of the constraints have a special structure — block, block-separable, or blocks with coupling variables. A number of standard decomposition methods are derived in the proposed framework. Problems with known bounds on the coupling variables are considered.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 32-38"},"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)90041-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85670820","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
On an inertial flow 关于惯性流
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90126-D
Yu.D. Shmyglevskii
{"title":"On an inertial flow","authors":"Yu.D. Shmyglevskii","doi":"10.1016/0041-5553(90)90126-D","DOIUrl":"10.1016/0041-5553(90)90126-D","url":null,"abstract":"<div><p>An example of a steady axisymmetric flow of an incompressible fluid, with a non-zero peripheral velocity component and straight streamlines, is constructed.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 6","pages":"Pages 167-168"},"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)90126-D","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"99282866","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
Digital simulation of evolutionary stochastic differential equations 进化随机微分方程的数字模拟
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90056-X
Yu.G. Bulychev, S.A. Pogonyshev
{"title":"Digital simulation of evolutionary stochastic differential equations","authors":"Yu.G. Bulychev,&nbsp;S.A. Pogonyshev","doi":"10.1016/0041-5553(90)90056-X","DOIUrl":"10.1016/0041-5553(90)90056-X","url":null,"abstract":"<div><p>Euler, Euler-Cauchy, and Runge-Kutta difference schemes and Fast Fourier-Transform procedures are used to develop efficient methods for the digital simulation of evolutionary stochastic partial differential equations that ensure the desired computational accuracy at minimum cost. Bounds of the computation errors are given.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 143-149"},"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)90056-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73568887","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
On the use of hybrid grid-characteristic schemes for the numerical solution of three-dimensional problems in the dynamics of a deformable solid 可变形固体动力学三维问题的混合网格-特征格式数值解的应用
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90062-W
I.B. Petrov, A.G. Tormasov, A.S. Kholodov
{"title":"On the use of hybrid grid-characteristic schemes for the numerical solution of three-dimensional problems in the dynamics of a deformable solid","authors":"I.B. Petrov,&nbsp;A.G. Tormasov,&nbsp;A.S. Kholodov","doi":"10.1016/0041-5553(90)90062-W","DOIUrl":"10.1016/0041-5553(90)90062-W","url":null,"abstract":"<div><p>The three-dimensional dynamical problem of the oblique impact of a rigid pellet on a deformable elastoplastic barrier is solved using a hybrid grid-characteristic scheme for the numerical solution of non-stationary systems of hyperbolic equations. Thegrid-characteristic hybrid scheme is adapted for the numerical solution of multidimensional non-stationary problems in the mechanics of deformable bodies.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 191-196"},"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)90062-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74491333","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: 20
Combined recovery of the quadrupole splitting distribution function and the dependence of the isomer shift using Mössbauer spectral data 利用Mössbauer光谱数据联合恢复四极分裂分布函数和同分异构体位移的依赖性
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 DOI: 10.1016/0041-5553(90)90168-R
O.G. Odintsov, E.A. Pushkarev
{"title":"Combined recovery of the quadrupole splitting distribution function and the dependence of the isomer shift using Mössbauer spectral data","authors":"O.G. Odintsov,&nbsp;E.A. Pushkarev","doi":"10.1016/0041-5553(90)90168-R","DOIUrl":"10.1016/0041-5553(90)90168-R","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 112-115"},"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)90168-R","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74635483","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