1. Structural
Materials Research Institute, National Institute of Advanced Industrial Science and Technology, 2266-98 Anagahora, Shimoshidami,
Moriyama-ku, Nagoya, Aichi 463-8560, Japan
2. Department
of Electronics Engineering, Kobe City College of Technology, 8-3 Gakuen-higashi, Nishiku, Kobe 651-2194, Japan
3. Faculty
of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan