Based on the analyzing the each characteristic of course of environmental planning and management and mutual teaching,the paper put forward the applying measurement of mutual teaching pattern in the course of environmental planning and management in these aspects: mutual idea,mutual condition,mutual content and mutual method.

Research on performance improvement of Web applications based on separating static and dynamic content;

In order to produce summaries from dynamic content,we present the dynamic summarization as a time-biased multi-constrained summarization from classic summarization, where the formalization is presented with temporal analysis.