This paper is focused on the complex shape modeling and rendering problems in CAGD and CAM field. Based on the viewpoints of from discrete to discrete and intuited geometric operation, we roundly summarize our theoretical research works and experimental system development in this paper. The main contents include geometric continuity preserving problem in parametric curve/surface [...]

[Abstract] Based on the view point of strain energy, some problems in structural earthquake analysis have been researched in this paper. Firstly, a general method of judging the adequacy of the number of participation modes is proposed. Secondly, the author advance the concept of “the most disadvantageous earthquake direction” , on which a detailed algorithm [...]

Abstract: Based on the concept of generalized compatibility, a super element of shear-wall is constructed, in which one rectangular hole are permitted. The compatibility of wall-to-wall is realized by adopting the condition of generalized compatibility in this element and such type of constructing method directly leads to the localization of meshing in FEM analysis [...]

The roots of the University of California go back to the gold rush days of 1849, when the drafters of the State Constitution, a group of vigorous and farsighted people, required the legislature to "encourage by all suitable means the promotion of intellectual, scientific, moral and agricultural improvement" of the people of California. These early [...]