Ph.D., Department of Engineering Science, National Cheng Kung University, Taiwan. Systems analyst of Information Center, Bureau of Education, Tainan City Government, Taiwan. Address: No. 236-1, Wufei St., West Central District, Tainan City 70052, Taiwan, ROC. Phone: +886-6-2130669 ext 31 Fax: +886-6-2130668 Email: protnmike@gmail.com