1. Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, JAPAN
2. Civil Engineering and Eco-Technology Consultants, Minamisenba 1-15-14, Chuo-ku, Osaka 542-0081, JAPAN
3. Aichi University of Education, Kariya, Aichi 448-8542, JAPAN