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崔希民, 刘清旺 , 谢传节 , 谷风云 , 黄芳
矿山测量2003年9月第3期/MINE SURVEYING Sept. 2003, Vo. 3,-0001,():
-1年11月30日
文中讨论了GIS 数据集成和互操作以及GML 的研究现状;分析了GIS数据集成和互操作的系统架构;提出了在该架构中采用GML 作为多源异构GIS 数据的统一描述格式, 在数据层次上实现GIS 数据的集成和互操作。
GIS, 数据集成, 数据互操作, GM , 系统架构
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崔希民, Qui Ximin, Chen Zhida
Applied Mathematics and Mechanics (English Edition, Vol. 20, No. 2, Feb. 1999),-0001,():
-1年11月30日
Localized deformation and instability is the focal point of research in mechanics. The most typical problem is the plastic analysis of cylindrical bar necking and shear band under uniaxial tension. Traditional elasto-plastic mechanics of infinitesimal deformation can not solve this problem successfully. In this paper, on the basis of S(strain)-R(rotation) decomposition thorem, the authors obtain the local strain distribution and progressive state of axial symmetric finite deformation of cylindrical bar under uniaxial tension adopting nonlinear gauge approximate method and computer modeling technique.
nonlinear geometric field theory, nonlinear gauge method, localized deformation
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