1998 - Dr. Jong Up Jeon

1998 - Prof. Toshiro Higuchi;

1999 - Hwan Jung and Prof. Kwanghee Nam

1999- Dr. Taiju Suzuki

2000 - Prof. Shigenobu Shinohara

2001 - Atsuo Kawamura, Junji Hirai and Tae Woong Kim

2002- Dr. Lennart Harnefors

2002- Dr. Hiroshi Fujimoto, Dr. Yoichi Hori and Dr. Atsuo Kawamura

2003- Dr. Ashwin M. Khambadkone and Dr. Joachim Holtz

2004- M. Saito, T. Takahara and N. Matsui