(As of June 11th, 2024)

BIO & CV

Kohei Hasegawa | Ph.D. (Eng.) | P.E.Jp (Water)

Short Biography

Current Research Interests

• Water distribution systems
• Optimization
• EPANET
• QGIS
• Parallel computing
• Discounting
• Life cycle analysis
• Pipe break
• Cost-Benefit analysis
• Uncertainty
• Fire flow
• Cost estimation

Education

Born in Kokubunji, Tokyo, January 28, 1993

• April 2011 - March 2015 | Nihon University | Environmental Engineering · B.A.
• April 2015 - March 2017 | Tokyo Metropolitan University | Environmental Engineering · M.S.
• April 2017 - March 2020 | Tokyo Metropolitan University | Civil Engineering · Ph.D

Work Experience

• April 2020 - March 2024 | Original Enginnering Consultants Co., Ltd.
• July 2024 - now ｜ Deloitte Touche Tohmatsu LLC

Theses

• Ph.D.： A study on optimal water transmission pipe replacement plan accounting for future uncertainties (March 2020)
• M.S.： Study on Pipe Replacement Planning of Water Pipelines Accouting for Life Cycle Cost (March 2017)

Social Activities

• Jun 2017 - March 2018 | Research Assistant | Japan Water Research Centre | Rainbows Project
• April 2020 - March 2021 | Comittee Member | Japan Water Research Centre | A-MARINE Project
• April 2023 - March 2024 | Technical Comittee Member | Smart Water Promotion Association

Scientific Societies

• Japan Society of Civil Engineers
• International Water Association (IWA)

Skills and Experience

• Python : Indivisually instructing a class of more than fifteen students
• Visual Basic for Applications（VBA）
• HTML+CSS : This web-page was made singlehandedly
• Monte Carlo Methods
• Statistical Modeling
• PSHA: Probablistic Seismic Hazard Analysis
• Optimization: Genetic Algorithms and Nonlinear Search

General Areas of Interests and Application

• Infrastructure management
• WDSA: Water Distribution Systems Analysis
• Sewage System
• OR: Operations Research

Awards

1. Association Of Water And Sewage Works Consultants Japan, Outstanding Achievement Award, June 2024.
2. Association Of Water And Sewage Works Consultants Japan, Best Presentation Award, July 2023.
3. Japan Society of Civil Enginners (JSCE), Young Researcher Award 2019, October 2019.
4. Japan Statistical Association Student Essay Contest 2015 -Silver Prize-, November 2015.
5. Japan Civil Engineering Consultants Association(JCCA) Student Essay Contest 2014 -Bronze Prize-, April 2015. (link)
6. Commendation for Special Achievement (NRI Essay Bronze Prize) -Nihon University-, March 2015.
7. Nomura Research Institute (NRI) Student Essay Contest 2014 -Bronze Prize-, November 2014.
8. Commendation for Special Achievement (JVMA 60th Anniversary Essay Bronze Prize) -Nihon University-, March 2014.
9. Japan Valve Manufacturers' Association (JVMA) 60th Anniversary Student Essay Contest -Bronze Prize-, Feburary 2014.

Highlighted Papers

1. Kohei Hasegawa, Yasuhiro Arai and Akira Koizumi: Application of Island Model Genetic Algorithm for Minimum Cost Design of Water Distribution System, The 11th International Symposium on Water Supply Technology, Yokohama,Japan, July 2019, pp.224-231.(Oral)
2. Kohei Hasegawa, Yasuhiro Arai, AKira Koizumi: Optimization of Water Supply Pipe Replacement Planning to Minimize Life Cycle Cost by Using Genetic Algorithm, J. JSCE, Ser. G (Environmental Research), Vol.74, No.6, pp.Ⅱ_275‒Ⅱ_286, 2018.
3. Kohei Hasegawa, Yasuhiro Arai and Akira Koizumi: Life Cycle Cost-based Pipe Replacement Model and Application in Depopulation Scenario, 1st International WDSA/CCWI Joint Conference, Ontario, Canada, July 2018. (Oral)(Link)