1. Hitachi Ltd. Power and Industrial Systems R&D Laboratory 7-1-1 Omika-cho, Hitachi-shi, Ibaraki-ken, 319-1221 Japan
2. Japan Atomic Energy Research Institute, Tokai Research Establishment Department of Materials Science, Tokai-mura, Naka-gun Ibaraki-ken, 319-1195 Japan
3. Japan Atomic Energy Research Institute Tokai Research Establishment, The Office of Planning, Tokai-mura Naka-gun, Ibaraki-ken, 319-1195 Japan
4. Hitachi Engineering Company, Ltd. First Consulting Engineering Department, 2-1 Saiwai-cho, Hitachi-shi Ibaraki-ken, 319-12 Japan
5. Business Automation Company Ltd. Mito Branch Office, 3-10-17 Jonan-cho, Mito-shi, Ibaraki-ken, 310 Japan