Three approaches to Multivariate quality control are introduced. The first approach is to control the mean vector and covariance matrix of multivariate population in terms of one statistic.
介绍三种对多指标的质量控制方法，第一种方法是用一个标量控制多变量总体的均值向量和协方差矩阵；
In the second kind of approach, the priority weight vector is calculated directly from a (consistent) fuzzy judgment matrix or one with satisfactory consistency.
另一类方法是直接由一致性或具有满意一致性的模糊判断矩阵计算排序向量。
Explicit formulas for the constraint admittance matrix and the nodal short-circuit current source vector of networks containing ideal voltage sources are derived by nodal approach.
本文用节点法分析了含理想电压源的网络，从网络的不含源导纳矩阵获得了含源网络的约束导纳矩阵以及节点短路电流源向量的公式。
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