| 1. | Bounded convex polyhedron
有界凸多面体 |
| 2. | Algorithm of parallel collision detection based on dividing a convex polyhedron to tetrahedrons
基于凸多面体剖分的并行碰撞检测算法 |
| 3. | Research on collision detection algorithm between convex polyhedron based on genetic algorithm
基于遗传算法的凸多面体间碰撞检测算法研究 |
| 4. | In chapter 2 , the method of the assembly part decomposed to many convex polyhedra is analyzed
第二章对一般零件分解为凸多面体进行了研究。 |
| 5. | Object shapes are represented by primitive shapes ( box , cone , cylinder , sphere ) , and complexes of polytopes ( line segments , convex polygons , convex polyhedra )
对象形状用基本形状（方框，圆锥形，圆柱，球）和复杂的多面体（线段，凸多边形，凸多面体）来表达。 |
| 6. | 4 , the optimal guaranteed control problem for a class of linear tune - delay systems with convex polyhedron uncertain parameters is considered . a state feedback controller designing method is given in terms of linear matrix inequalities
4 、针对一类具有凸多面体形式的不确定参数模型的时滞系统，研究了其保成本控制问题并得到相应控制器设计方法。 |
| 7. | Further , the codes of the meso - scale structured finite element grids of concrete are developed . ( 2 ) the fortran program to generate random convex polyhedron aggregate based on the topology of spherical aggregates and the codes of the meso - scale structured finite element grids of concrete are developed
( 2 )为了实现骨料模型和其细观有限元网格的可视化,本文还研究了利用现有商业软件生成多面体随机骨料的可视化混合编程的方法。 |
| 8. | ( 3 ) investigate the method of optimizing meshes by which two dimension finite element grids of meso - scale can be improved . ( 4 ) the three dimension parallel numerical computation of the wet - sieved concrete specimen was executed successfully to verify the program of random convex polyhedron aggregate
( 3 )研究了二维细观骨料模型有限元网格的优化方法并编制了相应有限元网格剖分程序,为三维细观骨料模型有限元网格优化打下了基础。 |
| 9. | Concerning the time delay systems with norm - bounded uncertainties or convex polyhedron uncertainties , the problems of robust stability criteria , the design methods of robust stabilizing controller and the design of controller that guarantee certain robust performance by state feedback or output feedback are investigated . the results can be classified as delay - independent and delay - dependent
针对具有范数有界不确定参数或凸多面体不确定参数的不确定时滞系统，采用状态反馈控制器或者输出反馈控制器，研究其鲁棒稳定性分析、鲁棒镇定控制器设计以及具有鲁棒性能约束的控制器设计问题，得到相应时滞无关或者时滞依赖结果。 |
| 10. | This article proposes in order to quickly hidden processing is carried on to multi concavo - convex polyhedron , the hierarchical structure is applied to carried on description on topo relations of three dimensional physique ; the bidirectional link table is applied to carried on the dynamic node assignment , for enhancing the efficiency of the algorithm ; when multi three - dimensional body is being hidden processing , the screen projection polygon should be carried on the overlaped eliminating confirmation and the polygon edges be carried on the computation of the intersectant points , the depth inspection , the comprehensive test and so on
摘要文章提出一种对多个凹凸形多面体进行消隐处理算法，并介绍了采用层次结构进行三维形体的拓扑关系描述；采用双向链表进行动态结点分配的算法，提高了算法效率；对多个三维物体消隐处理时，进行屏幕投影多边形的重叠排除验证，对多边形边进行交点计算，深度检查，包容性测试等。 |
