covariation

1.Education level contributed 8.7% of K covariation while AIDS attitude, religion and clinical experience contributed 16.8% of W(subscript k) covariation.

教育程养师知识变异量8.7%；爱滋病态，宗教信仰和临床经验共养师求知相意愿变异量16.8%。

2.The algorithm constructs matrixes by using covariation or covariation coefficient and estimates bearing and range of near-field sources by rooting method.

本方法利用协变异(或协变异数)构造矩阵,并通过求根方法估计近场源方向角和距离参数。