The rapid development of universities provides a golden opportunity to raise the awareness of PR and develop PR programs.

Based on case study,the author discusses the better situation that public relations activities can bring to library.

Mao Zedong did a lot to improve the public relations activities.

The most primary problem is the ignorance of the behavioral factors in the process of design and construction,which led up to the scarcity of public activity and public space that have genius loci.

Temporal and spatial differences of office activities in Guangzhou since late 1970s;

This paper focuses on the systematic and overall literature review on office activities location in western countries from the 1926 to the 21st century which can be divided into four stages: the research beginning stage,development stage,post-industrialism stage and Maturation stage of office location research.

The article introduces the method of the critica1 path,confirms the limited time of a project through confirming the critical path and finds out critical activity of the project to shorten time.

Beginning with a review on the background of business process reengineering, the authors put forward the activity relationship of business process depicted by Petri net and settle the conflict relationship by leading in dummy transition; and construct a Markor chain corresponding to the established stochastic Petri net so as to carry out performance analysis of system.