Institution: | (1) Environment, Natural Resources and Energy Division, Mizuho Information and Research Institute, 2-3 Kanda-Nishikicho, Chiyoda-ku, Tokyo 101-8443, Japan;(2) Integrated Research System for Sustainability Science (IR3S), The University of Tokyo, Tokyo, Japan;(3) The Integrated Assessment Section, Social and Environmental Systems Division, National Institute for Environmental Studies, Tsukuba, Japan;(4) Center for Knowledge Structuring, The University of Tokyo, Tokyo, Japan |