1. Industrial Research Institute, Aomori Prefecture Industrial Technology Research Center
2. Dept. Electrical System Eng., Polytechnic Univ.
3. Polytechnic Center Hiroshima, Dept. Sci., Kanagawa University
4. Dept. Eng. Sci. & Mechanics, Shibaura Inst. of Tech.
5. MitsuzawaECOTech.Lab.
6. Faculty of Agriculture, Tokyo Univ. of Agriculture and Technology
7. Tokin EMC Engineering Co., Ltd.
8. Institute of Industrial Science, Univ.