一个很棒的基于java的开源GIS系统OpenMap(TM)。-OpenMap is a Java Beans based toolkit for building applications and applets needing geographic information. Using OpenMap components, youcan access data from legacy applications, in-place, in a distributed setting.

简单的故障分析树程序，能够分析输入等式生成树形图形，有计算最小割集功能-Fault tree analysis of a simple process, be able to enter the equation analysis tree generated graphics, there is calculation of the minimum cut-set function