The optimization policy of market mechanism is integrated with timestamp mechanism and token-ring policy in MBHD algorithm to solve efficiently the problem of network load balance due to the restricted algorithms in grid and avoid the formation of unnecessary network load and competition.

Based on the learning theory of constructivism,this thesis makes a research into the design of delivery strategies in English language teaching in order to provide a guideline on how to make English classes effective as well as efficient to Chinese English teacher from a the view of making efficient delivery at English classes.

This paper introduces the application of CircLink based on enhanced token ring transmit protocol in the on board device of Automatic Train Control(ATC)system.