Boolean calculation

Reachability matrix is an effective tool for identifying whether a directed graph to be strongly or weakly connected graph, it provides the calculating method of reachable matrix with the property of the Boolean matrix operation, the calculation method is easy and simple.

可达矩阵是判别一个有向图是否为强连通图或弱连通图的有效工具.利用布尔矩阵的运算性质给出了计算有向图可达矩阵的方法，该方法计算简便。

A New Boolean Calculation Method and it's Application of Reliability Analysis

布尔逻辑和与逻辑积运算及可靠性分析应用

In solution, this method has clear thought and simple list course and has greatly increased calculation efficiency of solving this kind of Boolean function.

此法在求解时思路清晰，列表过程简单，大大提高了求解本类布尔函数的计算效率。

Three major ways of MEDLINE searching are the medical subject headings ( MeSH) search, text word search and Boolean calculation search.

MEDLINE的三种主要检索方式是医学主题词检索、自由词检索和布尔逻辑方式检索。

Moreover, taking the motion law into account and with the Boolean subtraction calculation of the solids of worm and wormgear at every meshing position, the solid modeling of hourglass worm parts is realized.

考虑运动规律，对每个啮合位置的蜗杆实体与蜗轮轮齿实体进行布尔减运算，进而实现环面蜗杆零件的实体建模。