This paper studies in detail the naming principle of published or subscribed parameters of simulation models in a distributed flight simulation system, analyzes and illustrates the composing characteristics and constructing algorithm of the published, subscribed or self-subscribed parameter area.

Strategy of Class Subscription in KD-RTI/DDM;

Meanwhile,it also considers from the three aspects of parking,shopping area,leisure area,and puts forward some measures to optimize the design on the large integrated supermarkets,so as to make it meet the customers requirement,and also offer the users most convenient service.