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PIAS : A Citis-Based Information Sharing System

CITIS (Contractor Integrated Technical Information Service) is a standard originated from the U.S. Department of Defense. It defines a set of functions for sharing contractually required digital information between the owner and contractors. This research develops a project-oriented information sharing system, named PIAS (Project Information Acquisition Service), which supports not only CITIS functions for information sharing but also workflow management services for handling the document flows among users. The characteristics of the A/E/C industry, such as lots of participants and complex processes, are considered in the development of PIAS. In addition, for the reason of software reuse and system scalability, PIAS is designed and implemented using object-oriented techniques and is built in a 3-tier distributed system architecture.