Dr. Nakasu is a Researcher, Professional Level at College of Population Studies, Chulalongkorn University in Thailand. He had been working at NIED (National Research Institute for Earth Science and Disaster Resilience) as a principal research fellow, and ICHARM (International Centre for Water Hazard and Risk Management), and PWRI (Public Works Research Institute) under the auspices of UNESCO as a research specialist in Japan for a decade. He has conducted many disaster field surveys, such as the Indian Ocean Tsunami (2004), Hurricane Katrina (2005), Typhoon Ondoy and Pepeng (2009), the Great East Japan Earthquake and Tsunami (2011), and the Chao Phraya River Flood (2011). He also conducted abundant disaster management research around the globe. He had been a project leader of the Working Group of Hydrology, the Typhoon Committee (WMO and UN/ESCAP) for nearly 3 years and an external evaluator for UN/ESCAP policy and projects. He was also a visiting researcher at JICA (Japan International Cooperation Agency) and an adjunct instructor at several universities in Japan. He won a second prize for his poster presentation at the Society for Risk Analysis-Asia Conference in Taipei in 2014. His research interests include the environment and comparative studies.