Update 2020.1.20

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Date Updates
2020.1.20 Experimentally, Chinese language is added
2020.1.15 Various style changes, news addition, policy addition, “yagimi.com” link addition, etc.
2019.10.11 Search is available in English TOP, links are fixed, etc.
2019.10.9 MPRA links added for two papers, etc.
2019.10.8 Website weight reduction, links page, Scopus, etc.
2019.10.5 Change of site structure (URL)
2019.10.2 Information of research achievements, material, etc.
2019.4.8 Information: Environmental economics II
2019.3.26 Achievement list etc.
2019.2.3 class grade etc.
2018.10.9 update
2018.10.5 Homepage creation
TOP page (English)