Kozo Torasan Mayumi graduated from the Graduate School of Engineering at the Department of Applied Mathematics and Physics of Kyoto University. Between 1984 and 1988, he studied bioeconomics at the Department of Economics of Vanderbilt University under Prof. Nicholas Georgescu-Roegen’s supervision. Mayumi has been working in the field of energy analysis, ecological economics and complexity/hierarchy theory. Having retired from Tokushima University, he now works at the Kyoto College of Graduate Studies for Informatics.
Ansel Renner graduated from the Department of Geography and School of Environment of McGill University and the Institute of Environmental Science and Technology of the Autonomous University of Barcelona. As an academic researcher at the latter-mentioned institute, also as an independent contractor, Renner has been working on accounting methodology for processes of informed deliberation on the science-policy interface in relation to systemic issues of sustainability.