The method of experimental research was used to probed into players irrationality of service decision made in the situation of approach-avoidance motive conflict.

The research testified the influence of approach-avoidance motive conflict on serve performances.

Analysis on reservation-based multi-channel multiple access protocol with collision avoidance in WLAN;

A novel multiple access protocol, namely channel selection collision avoidance (CSCA) protocol, was proposed for efficient channel sharing in wireless ad hoc networks.

Aiming at the problem of data consistency in collaborative design,the paper analyzes the available strategies of subsequent collision avoidance,puts forward one collision avoidance strategy of alterable granularity lock by combining with the particularity of CATIA.