Dr. Nakasu is an Expert researcher (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 Prevention) as a principal research fellow and ICHARM (International Centre for Water Hazard and Risk Management), PWRI (Public Works Research Institute) as a research specialist in Japan for a decade. He has conducted many disaster field surveys such as Indian Ocean Tsunami (2004), Hurricane Katrina (2005), Typhoon Ondoy and Pepeng (2009), Great East Japan Earthquake and Tsunami (2011), and 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 the UN/ESCAP project. 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. He is a tsunami evacuation research committee member of the Japanese Association for Earthquake Engineering (JAEE). His research interests include the environment and comparative studies.