1. Department of Corporate Diagnosis, Small & Medium Business Corporation, Yeouido-dong 24, Gukjaegeumyung-ro, Yeongdeungpo-gu, Seoul 150-718, Republic of Korea
2. Department
of Chemical and Biomolecular Engineering, Yonsei University 134
Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea
3. Department
of Chemical and Environmental Technology, Inha Technical College, 100 Inha-Ro, Incheon 402-752, Republic of Korea