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检索条件"主题词=principle."
20 条 记 录,以下是1-10 订阅
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A new orthogonality relationship for orthotropic thin plate theory and its variational principle
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Science China(Physics,Mechanics & Astronomy) 2005年 第3期48卷 371-380页
作者: LUO Jianhui 1 , LONG Yuqiu 2 & LIU Guangdong 1 1. College of Civil Engineering, Hunan University, Changsha 410082, China 2. Department of Civil Engineering, Tsinghua University, Beijing 100084, China 1. College of Civil Engineering Hunan University 410082 Changsha China 2. Department of Civil Engineering Tsinghua University 100084 Beijing China
The thought how dual vectors are constructed in a new orthogonality relationship for theory of elasticity is generalized into orthotropic thin plate bending problems by using the analogy theory between plane elasticit... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
An invariance principle.for negatively associated random variables
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Chinese Science Bulletin 1997年 第5期42卷 359-364页
作者: LIN ZhengyanDepartment of Mathematics and Information Science, Hangzhou University, Hangzhou 310028, China Department of Mathematics and Information Science Hangzhou University Hangzhou China
A finite collection of random variables, X1,…, Xn (n≥2), is said to be negatively associated (NA) if any two coordinatewise nondecreasing (or nonincreasing) functions f1 and f2 on Rn, such that (?)j=fj(X1,... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Operator constraint principle.for simplifying atmospheric dynamical equations
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Chinese Science Bulletin 2001年 第12期46卷 1053-1056页
作者: LI Jianping & CHOU Jifan1. National Key Laboratory of Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China 2. Department of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China National Key Laboratory of Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences Department of Atmospheric Sciences Lanzhou University
Based on the qualitative theory of atmospheric dynamical equations, a new method for simplifying equations, the operator constraint principle. is presented. The general rule of the method and its mathematical strictne... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
VARIATIONAL principle.FOR RIGID PLASTIC COMPRESSIBLE MATERIALS
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Chinese Science Bulletin 1990年 第8期35卷 692-695页
作者: 刘相华 Department of Metal Forming Northeast University of Technology Shenyang 110006 PRC
Since the slightly compressible method in R. P. FEM (Rigid Plastic Finite Element Method) was proposed by K. Mori, it has been used extensively in metal forming processes. One of the theoretical bases of R. P. FEM is ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Root Distribution Invariance of Polynomial Families
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Science China Mathematics 1993年 第5期36卷 584-594页
作者: 王龙 黄琳 Department of Mechanics Peking University Beijing 100871 PRC
This paper treats the problem of root distribution invariance of polynomial families. We first establish the generalized zero exclusion principle.for root distribution of polynomial families, and prove the complex bou... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Variational principle. of second, first and intermediate kinds for non-holonomic mechanics
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Science China Mathematics 1999年 第5期42卷 546-551页
作者: 朱如曾 1. Laboratory for Nonlinear Mechanics of Continuous Media Institute of Mechanics Chinese Academy of Sciences 100080 Beijing China
The differential variational principle. of second kind for non-holonomic mechanics are given, from which a number of integral variational principle. of second kind are set up. From the latter, the general relation of ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
A study of constraints on the constitutive relationships of electromagnetic medium based on generally acknowledged truths
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Science China(Physics,Mechanics & Astronomy) 2005年 第5期48卷 541-548页
作者: GUO Huiping1, LIU Xueguan1,2, YIN Hongcheng2, CHAO Zengming2 & HUANG Peikang2 1. School of Electronics and Information Engineering, Soochow University, Suzhou 215021, China 2. National Electromagnetic Scattering Laboratory, Beijing 100854, China 1. School of Electronics and Information Engineering Soochow University 215021 Suzhou China 2. National Electromagnetic Scattering Laboratory 100854 Beijing China
The study of constraints on the constitutive relationships of electromagnetic media is of great importance in the aspects of the medium characteristics analysis, the new article material synthesis and the medium param... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Moment inequalities and weak convergence for negatively associated sequences
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Science China Mathematics 1997年 第2期40卷 172-182页
作者: 苏淳 赵林城 王岳宝 Department of Statistics and Finance University of Science and Technology of China Hefei 230026 China Department of Mathematics Zhanjiang Normal Institute Zhanjiang 524048 China
A probability inequality for Sn and some pth moment (p≥2) inequalities for | Sn| and max 1≤k≤n |Sk|are established. Here Sn is the partial sum of a negatively associated sequence Based on these inequalities, a weak... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Large deviation principle. for stationary NA sequences
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Chinese Science Bulletin 1998年 第7期43卷 536-540页
作者: HU Yijun Department of Mathematics, Wuhan University, Wuhan 430072, China Department of Mathematics Wuhan University Wuhan China
Under general conditions, the large deviation principle. for partial sums of stationary NA sequences are proved.
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Symmetry and monotonicity for systems of semilinear elliptic equations in a half space
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Chinese Science Bulletin 1996年 第21期41卷 1776-1780页
作者: 施小丁 顾永耕 陈京 Institute of Systems Science Chinese Academy of Sciences Beijing 100080 China Department of Mathematics City University of Hong Kong Hong Kong
In ref.[1] properties of monotonicity and symmetry were established for solutions ofelliptic equations by Gidas et al.,using the method of moving planes and the maximum *** then there have been lots of works published... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论