Researcher Database

（Last updated : 2025-03-13 15:26:08）　

KOSUGI Takanobu

Department / Course College of Policy Science Department of Policy Science

Title / Position Professor

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Other Affiliations
1.	Graduate School of Policy Science
2.	Research Organization of Open Innovation & Collaboration Research Center for Sustainability Science
3.	Research Organization of Science and Technology Earth & Space Exploration Center

Academic background
1.	2000/01 Degree Acquisition	│ Osaka University Doctor of Philosophy in Engineering
2.	～1995/03	Doctoral Program (1st Semester) │ Department of Information Systems Engineering │ Graduate School of Engineering │ Osaka University │ Completed

Business career
1.	2015/09/26 ～ 2016/09/25	Guest Professor │ Graduate School of Engineering │ Osaka University
2.	2013/04/01 ～	Professor │ College of Policy Science │ Ritsumeikan University
3.	2007/09/26 ～ 2008/09/25	Guest Scholar │ Faculty of Economics and Business Administration │ Free University of Amsterdam
4.	2007/04/01 ～ 2013/03/31	Associate Professor │ College of Policy Science │ Ritsumeikan University
5.	2004/04/01 ～ 2007/03/31	Assistant Professor │ College of Policy Science │ Ritsumeikan University
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Committee and society
1.	2018/09 ～	Japan Society of Energy and Resources Member, Planning Committee

Research activities
1.		Japan Society of Energy and Resources
2.		Society for Environmental Economics and Policy Studies
3.		Operations Research Society of Japan
4.		Japan Association for Applied Economics

Subject of research
1.	Integrated Climate-economy Modeling under Uncertainty
2.	Assessment of Environmental Side-effects of Climate Change Mitigation Technologies

Research summary
Energy and economic strategy for climate change mitigation The study aims at developing mathematical models to evaluate structures of energy supply and energy-consuming industries, and applying the models to propose technological and economic policy for mitigating climate change and energy security concerns. =Research theme(1)= The study attempts to develop and apply methodologies for supporting decision-making regarding climate change mitigation under several sorts of uncertainty by using integrated assessment models. =Research theme(2)= The study assesses co-benefits and adverse environmental side-effects regarding climate change mitigation technologies, e.g., carbon-reduction energy systems and climate geoengineering, based on several methodologies such as life-cycle impact assessment.

Present specialized field
Modeling and technologies for environmental conservation and remediation, Environmental policy and social systems, Energy engineering (Keyword：Technology R&D and diffusion policy for solving global enviromental ploblems)

Books
1.	2018/04	「Solar Geoengineering Governance. In: Oxford Research Encyclopedia of Climate Science」 │ ,pp.1-52

Papers
1.	2024	Public attitude toward solar radiation modification: results of a two-scenario online survey on perception in four Asia–Pacific countries │ Sustainability Science │
2.	2023/11	Learning rate matters: Reexamining optimal power expansion planning with endogenized technological experience curves │ Energy │ 283,pp.129049
3.	2023/05	Trends in integrated assessments of solar radiation modification considering its side effects │ Energy and Resources │ ,pp.176-180
4.	2021/02	Contributions to Sustainable Development Goals (SDGs) and Future Prospects of Circular Forest Management and Biomass Industries in Shimokawa Town, Hokkaido Prefecture │ Policy Science │ 28 (2),pp.97-111
5.	2020/06	The North-South divide on public perceptions of stratospheric aerosol geoengineering?: A survey in six Asia-Pacific countries │ Environmental Communication │ 14 (5),pp.641-656
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Academic conference presentation
1.	2016/09/05	Solar geoengineering strategy under its uncertain availability
2.	2014/08/19	Global warming mitigation strategies considering the uncertainty of aerosol geoengineering availability
3.	2014/06/29	Endogenizing the probability of nuclear exit in an optimal power-generation mix model
4.	2011/10/08	A simple feedback control approach for economic measures to deploy new energy technologies
5.	2011/07/30	Climate-economy modeling considering solar radiation management and its termination risk
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Achievements of joint.Funded research
1.	2016/04 ～ 2017/03	Statistical analysis study regarding the diffusion of residential solar photovoltaic panels

Message
1.	Integration of engineering and economics toward solving environmental, resource and energy issues The consumption of several resources indispensable for humanity to sustain social activities has been growing rapidly, which is threatening the security of resources supply. Furthermore, owing to the emissions of several substances caused by the resources consumption, global and regional environmental degradations are becoming apparent. Among these issues, I pay attention especially to the problems of energy/resource consumption and climate change considered to be caused by carbon emissions. Science and technology plays an important role in solving the above issues. I was originally engaged in proposing and evaluating advanced low carbon-emission energy technologies based on engineering approaches. However, such bottom-up approaches that study individual technologies contribute partially to the global warming issues. Top-down approaches are indispensable, which explore effective economic policy for facilitating carbon emissions reduction is the whole of society. I have been studying problem-solving methodologies that better integrate these two approaches to take advantage of them.