1. Assistant Professor, Dept. of Information Management, St. John's University, Taipei County, Taiwan 251, R.O.C.; formerly, AssistantProfessor, Dept. of Information Management, St. John’s and St. Mary’s Institute of Technology, Taipei County, Taiwan 251, R.O.C.
2. Graduate Student, Dept. of Civil Engineering, National Central Univ., Chung-Li, Taiwan 320, R.O.C.