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 numerical method for solving Hill's equation in problems of quantum mechanics 量子力学问题中求解希尔方程的数值方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90019-O
V.A. Lukin, V.M. Pshenichnikov
{"title":"A numerical method for solving Hill's equation in problems of quantum mechanics","authors":"V.A. Lukin, V.M. Pshenichnikov","doi":"10.1016/0041-5553(90)90019-O","DOIUrl":"10.1016/0041-5553(90)90019-O","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 1","pages":"Pages 128-129"},"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)90019-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86900286","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
Averaging of the stationary problem of heat conduction in a thin inhomogeneous plate 非均匀薄板热传导平稳问题的平均
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90101-W
V.Yu. Dubinskaya
{"title":"Averaging of the stationary problem of heat conduction in a thin inhomogeneous plate","authors":"V.Yu. Dubinskaya","doi":"10.1016/0041-5553(90)90101-W","DOIUrl":"10.1016/0041-5553(90)90101-W","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 2","pages":"Pages 201-202"},"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)90101-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91199107","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 properties of effective modulus of composition plates 复合材料板有效模量的性质
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90113-7
M.V. Reztsov
{"title":"The properties of effective modulus of composition plates","authors":"M.V. Reztsov","doi":"10.1016/0041-5553(90)90113-7","DOIUrl":"10.1016/0041-5553(90)90113-7","url":null,"abstract":"<div><p>Some data are obtained which enable the results of previous papers on the averaging of composite plates to be generalized to the case of a composition layer whose structure is restricted by requirement of physical symmetry with respect to the middle plane.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 6","pages":"Pages 103-105"},"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)90113-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75646626","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
Determination of the absorption coefficient in the spherically symmetric case 球对称情况下吸收系数的测定
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90160-T
V.I. Gryn
{"title":"Determination of the absorption coefficient in the spherically symmetric case","authors":"V.I. Gryn","doi":"10.1016/0041-5553(90)90160-T","DOIUrl":"10.1016/0041-5553(90)90160-T","url":null,"abstract":"","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 5","pages":"Pages 42-54"},"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)90160-T","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81635692","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 Pareto-optimality of nash equilibrium in dynamic controlled systems with conflict 具有冲突的动态控制系统纳什均衡的pareto最优性
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90039-U
M.B. Mamedov
{"title":"The Pareto-optimality of nash equilibrium in dynamic controlled systems with conflict","authors":"M.B. Mamedov","doi":"10.1016/0041-5553(90)90039-U","DOIUrl":"10.1016/0041-5553(90)90039-U","url":null,"abstract":"<div><p>Sufficient conditions are derived for the Pareto-optimality of an equilibrium. A class of positional differential games satisfying these conditions are considered. In other words, equilibria that are unimprovable in the equilibrium set are Pareto-optimal, i.e., unimprovable among all the situations of the game.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 16-24"},"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)90039-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88894879","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 flow of electric current from rectilinear electrodes in a magnetized semiconductor film 在磁化的半导体薄膜中从直线电极流出的电流
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90109-6
P.A. Krutitskii
{"title":"The flow of electric current from rectilinear electrodes in a magnetized semiconductor film","authors":"P.A. Krutitskii","doi":"10.1016/0041-5553(90)90109-6","DOIUrl":"10.1016/0041-5553(90)90109-6","url":null,"abstract":"<div><p>An explicit solution of the boundary value problem with a skew derivative in the boundary condition describing the flow of electric current from a system of rectilinear electrodes, sealed into a semiconductor film, placed in a constant magnetic field, is given. The cases of closed and open systems (when there are current sources at infinity) are considered. The features of the electric field in the region of the ends of the electrodes are investigated. It is shown that the formulation of the problem does not change when the system of coordinates is rotated.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 6","pages":"Pages 64-73"},"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)90109-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90913520","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 projection method for singularly perturbed boundary-value problems 奇异摄动边值问题的投影方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90043-R
I.A. Blatov
{"title":"The projection method for singularly perturbed boundary-value problems","authors":"I.A. Blatov","doi":"10.1016/0041-5553(90)90043-R","DOIUrl":"10.1016/0041-5553(90)90043-R","url":null,"abstract":"<div><p>A finite element method for linear and non-linear singularly perturbed boundary-value problems is considered. It is proved that the approximate solutions converge to the exact solution in the norm of the space of continuous functions, uniformly in the small parameter. The proposed scheme is suitable for solving a wider class of problems than can be handled by the popular “hinged element method”, and also produces a higher order of approximation.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 47-56"},"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)90043-R","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80360164","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: 8
Convergence properties of the gradient method under conditions of variable-level interference 变电平干扰条件下梯度法的收敛性
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90040-Y
S.K. Zavriev
{"title":"Convergence properties of the gradient method under conditions of variable-level interference","authors":"S.K. Zavriev","doi":"10.1016/0041-5553(90)90040-Y","DOIUrl":"10.1016/0041-5553(90)90040-Y","url":null,"abstract":"<div><p>The method of steepest gradient descent is considered on the assumption that the values of the objective function and its gradients are computed inaccurately. The limit set of the trajectories of the method is determined. For some types of noise this set cannot be made smaller for any problem of the class under consideration.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 4","pages":"Pages 24-32"},"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)90040-Y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90245739","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: 4
A method for the numerical solution of integral equations in boundary value problems with finite-order Abelian symmetry groups 有限阶阿贝尔对称群边值问题积分方程数值解的一种方法
USSR Computational Mathematics and Mathematical Physics Pub Date : 1990-01-01 Epub Date: 2004-04-01 DOI: 10.1016/0041-5553(90)90107-4
E.V. Zakharov, S.I. Safronov, R.P. Tarasov
{"title":"A method for the numerical solution of integral equations in boundary value problems with finite-order Abelian symmetry groups","authors":"E.V. Zakharov,&nbsp;S.I. Safronov,&nbsp;R.P. Tarasov","doi":"10.1016/0041-5553(90)90107-4","DOIUrl":"10.1016/0041-5553(90)90107-4","url":null,"abstract":"<div><p>It is shown that for boundary value problems with commutative finite-order symmetry groups it is possible to use the concepts of convolution and the Fourier transform for finite groups to reduce considerably the order of the matrix equations used to approximate the original integral equations, and thus to extend the range of problems amenable to numerical analysis. An implementation of this method is considered for boundary value problems with Abelian symmetry group of eighth order, describing a quadrupole-type system. Results of a numerical experiment are presented for this case, enabling the efficiency of the method to be estimated.</p></div>","PeriodicalId":101271,"journal":{"name":"USSR Computational Mathematics and Mathematical Physics","volume":"30 6","pages":"Pages 44-53"},"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)90107-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74209948","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 Epub Date: 2004-04-01 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
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