One of the most useful and important accessories for training a young dog is a piece of cord with a loop at each end 訓練幼犬最有用也最重要的工具之一,是一條兩端有環的繩子。
In this paper , for the maximal uncontrollable loop - in subnet with a special form , the maximal permissive control policy is obtained through applying the lip to the loop - free subnet that is equivalent to the maximal uncontrollable loop - in subnet 本文針對一類最大不可控子網有環的petri網,通過把有環的最大不可控子網等價為無環不可控子網進而應用lip方法來得到最大容許控制律。