This book is a volume of essays celebrating the life and work of Yoshiro Higano, professor of Environmental Policy, Doctoral Program in Sustainable Environmental Studies, Graduate School of Life and Environmental Sciences, University of Tsukuba, Japan. Prof. Higanös research strongly focuses on the comprehensive evaluation of resources and research content for decision science and engineering, including simulation modeling for environmental quality control, the evaluation of environmental remediation technologies, integrated river (lake) basin management, and synthesized environmental policy. Yoshiro Higano is the past president of the Regional Science Association International (RSAI) and the current president of the Japan Section of the RSAI (JSRSAI). He also served as