11Th International Conference on Concurrent Engineering, Date: JUL 26-30, 2004, Location: Beijing, PEOPLES R CHINA, Sponsors: Int Soc Productiv Enhancement, Minist Educ China, Natl Sci Fdn China, KC Wong Educ Fdn, Beijing Jiaotong Univ, Beijing Assoc Sci & Technol, Chinese Mech Engn Soc, Beijing Railway Soc, Int Inst Concurrent Engn, CETEAM Int, CERE, Taylor & Francis, Int Journal Prod Res