For the soils described by the Gardner-Russo retention function,the differences between standard estimations of interblock conductivity and the dimensionless horizontal Darcian means(k~*_H) and the vertical Darcian means(k~*_V) are investigated within the double-saturation coordinate system.

In this paper, we present a method of calcalatingthe mean first passage time of finite birth-deathchains.

PFWRR adjusts each queue s weight in terms of the average packet arrival rate to guarantee that the proportion of average queuing delay accords with the differentiation parameters when each queue s length is smaller than or equals to its buffer length and the proportion of average packet loss rate accords with the differentiation parameters when the system begins.