SAKAI Hiroshi
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　 Vitae (Education　Professional Experience　Membership　Academic and Social Activities　Teaching Experience　Awards　Language Spoken)


　Education


　Professional Experience

　Membership
　　International Water Association, International Ultraviolet Association, Japan Society for Water Environment, Japan Society for Civil Engineering

　Academic and Social Activities
  1. ) May 10th 2010 - March 31st 2011, Science Council of Japan, Project Associate Member, Organized  workshop  at  Science  council  of  Asia  Conference  in  Manila.
  2. ) December 2022-, AQUA Assocaite Editor
  3. ) Reviewer experience of following Journals
    　　Environmental Science and Technology, Water Research, Journal of Hazardous Materials, Chemosphere, Environmental Engineering Science, Polish Journal of Environmental Studies, Environmental Engineering Research

　Teaching Experience
  1. ) April 2005-March 2007
    Teaching Assistant at Department of Engineering, School of Engineering, The University of Tokyo.
    Courses  taught:  Urban  engineering  Exercise,  Environmental  Engineering  Experimental Exercise, Hydraulics Exercise, Mathematical Exercise
  2. ) November 2008-March 2017
    Project  Assistant  Professor  at  Department  of  Engineering,  School  of  Engineering,  The University of Tokyo.
    Courses  taught:  Master  Thesis,  Graduate  Thesis,  Urban  engineering  Exercise, Environmental Engineering Experimental Exercise, Environmental Field Exercise (Held at Hue, Vietnam), Sustainable Urban Regeneration-A (Omnibus), Sustainable Urban Management (As a field tour assistant), Technology and Ethic of Urban Engineering (As a field tour assistant)
  3. ) April 2017-Present
    Associate Professor at Division of Civil and Environmental Engineering, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University
    Courses  taught:  Environmental Analysis etc., 
　Awards

　Language Spoken



　 Research Achievements (Publications(peer-reviewed), Presentations at International Conferences, Workshops and Invited Talks,　Other pulications Thesis, Award)



　Publications(peer-reviewed) (Please see laboratory HP for after 2019.)

  1. Hiroshi Sakai, Pierre Callaud, Koji Kosaka, and Satoshi Takizawa (2017) Degradation of nine nitrosamines in water by ultraviolet irradiation, Desalination and Water Treatment, 58, pp.442-448
  2. Hiroshi SAKAI, Koji KOSAKA, Satoshi TAKIZAWA (2016) Degradation of N -Nitrosodimethylamine by mercury-free excimer UV lamps, Environmental Engineering Science, 33, pp.341- 346
  3. Hiroshi Sakai, Shunsuke Tokuhara, Michio Murakami, Koji Kosaka, Kumiko Oguma, and Satoshi Takizawa (2016) Comparison of chlorination and chloramination in carbonaceous and nitrogenous disinfection byproduct formation potentials with prolonged contact time, Water Research, 88, pp. 661-670
  4. Hanggara Sudrajat, Sandhya Babel, Hiroshi Sakai, Satoshi Takizawa (2016) Rapid enhanced photocatalytic degradation of dyes using novel N-doped ZrO2, Journal of Environmental Management, 165, pp. 224-234
  5. Surapong RATTANAKUL, Kumiko OGUMA, Hiroshi SAKAI, Satoshi TAKIZAWA (2014) Inactivation of Viruses by Combination Processes of UV and Chlorine, Journal of Water and Environment Technology 12(6) pp. 511-523
  6. Hiroshi Sakai, Tatsuro Takamatsu, Kumiko Oguma, Michio Murakami, Koji Kosaka, Mari Asami, and Satoshi Takizawa (2014) Effects of Natural Organic Matter and Nitrate on the Behavior of NDMA during UV Irradiation and Chloramination, Journal of Water Supply: Research and Technology - Aqua, 63, pp.260-267
  7. Athit Phetrak, Jenyuk Lohwacharin, Hiroshi Sakai, Michio Murakami, Kumiko Oguma and Satoshi Takizawa (2014) Simultaneous Removal of Dissolved Organic Matter and Bromide from Drinking Water Source by Anion Exchange Resins for Controlling Disinfection By-Products, Journal of Environmental Sciences, 26, pp.1294-1300
  8. Kumiko Oguma, Ryo Kita, Hiroshi Sakai, Michio Murakami and Satoshi Takizawa (2013) Application of UV light emitting diodes to batch and flow-through water disinfection systems, Desalination, 328, pp.24-30
  9. Michio Murakami, Hiroshi Nishikoori, Hiroshi Sakai, Kumiko Oguma, Hideshige Takada, Satoshi Takizawa (2013) Formation of perfluorinated surfactants from precursors by indigenous microorganisms in ground water, Chemosphere, 93, pp.140-145
  10. Hiroshi SAKAI, Aimin HAO, Yasushi ISERI, Song WANG, Takahiro KUBA, Zhenjia ZHANG, and Hiroyuki KATAYAMA (2013) Occurrence and Distribution of Microcystins in Lake Taihu, China, The Scientific World Journal, 2013, 838176
  11. Hiroshi Sakai, Yatsuka Kataoka, and Kensuke Fukushi (2013) Quality of Source Water and Drinking Water in Urban Areas of Myanmar, The Scientific World Journal, 2013, 854261
  12. Hiroshi Sakai, Olivier Autin, Simon Parsons (2013) Change in Haloacetic Acid Formation Potential during UV and UV/H2O2 Treatment of Model Organic Compounds, Chemosphere, 92, pp.647-651
  13. Miho Kuroiwa, Takako Masuda, Takuo Omura, Aunnop Wongrueng, Kumiko Oguma, Hiroshi Sakai, Michio Murakami, Satoshi Takizawa (2013) Membrane fouling in seawater desalination processes caused by harmful dinoflagellate Cochlodinium polykrikoides, Desalination and Water Treatment, 51, pp.950-957
  14. Takuya Ishida, Satoshi Takizawa, Naoko Watanabe, Michio Murakami, Hiroshi Sakai, Kumiko Oguma (2013) Optimum operation of desalination plant to minimize power consumption and water shortage risks in Okinawa, Japan, Desalination and Water Treatment, 51, pp.19-25
  15. Athit Phetrak, Jenyuk Lohwacharin, Naoko Watanabe, Michio Murakami, Hiroshi Sakai, Kumiko Oguma and Satoshi Takizawa, (2012) Competitive Removal of Dissolved Organic Matter (DOM) and Inorganic Anions by Anion Exchange Resins (AERs), Water Science and Technology: Water Supply, 12(5), pp.630-636
  16. Hiroshi SAKAI, Tatsuro TAKAMATSU, Koji KOSAKA, Naoyuki KAMIKO, and Satoshi TAKIZAWA, (2012) Effects of Wavelength and Water Quality on Photodegradation of N-Nitrosodimethylamine (NDMA), Chemosphere, 89(6), pp.702-707
  17. Yu Yang, Satoshi Takizawa, Hiroshi Sakai, Michio Murakami, Naoko Watanabe (2012) Removal of organic matter and phosphate using ferrihydrite for reduction of microbial regrowth potential, Water Science and Technology, 66(6), pp.1348-1353
  18. Hiroshi SAKAI, Koji KOSAKA, Satoshi TAKIZAWA. (2012) Effect of wavelength on UV-degradation of N-Nitrosodimethylamine, Ozone Science & Engineering, 34(2), pp.115-119
  19. Hiroshi Nishikoori, Michio Murakami, Hiroshi Sakai, Kumiko Oguma, Hideshige Takada, Satoshi Takizawa. (2011) Estimation of contribution from non-point sources to perfluorinated surfactants in a river by using boron as a wastewater tracer, Chemosphere, 84, pp.1125-1132 
  20. Nguyen Van Huy, Michio Murakami, Hiroshi Sakai, Kumiko Oguma, Koji Kosaka, Mari Asami, Satoshi Takizawa. (2011) Occurrence and formation potential of N-nitrosodimethylamine in ground water and river water in Tokyo, Water Research, 45, pp.3369-3377
  21. Hiroshi SAKAI, Hiroyuki KATAYAMA, Kumiko OGUMA, Shinichiro OHGAKI, (2011) Effect of Photoreactivation on UV Inactivation of Microcystis aeruginosa, Water Science & Technology, 63(6), pp.1224-1229
  22. Hiroshi SAKAI, Tatsuro TAKAMATSU, Kumiko OGUMA, Michio MURAKAMI, Koji KOSAKA, Mari ASAMI, Satoshi TAKIZAWA, (2010) Influence of Nitrate on UV-degradation of N-Nitrosodimethylamine (NDMA),  IUVA News 12(2), 26-29
  23. Hiroshi SAKAI, Hiroyuki KATAYAMA, Kumiko OGUMA, Shinichiro OHGAKI, (2009), Kinetics of Microcystis aeruginosa Growth and Intracellular Microcystins Release after UV Irradiation, Environmental Science & Technology Vol. 43, pp.896-901
  24. Hiroshi SAKAI, Kumiko OGUMA, Hiroyuki KATAYAMA, Shinichiro OHGAKI, (2007), Effects of Low- or Medium-Pressure UV Irradiation on the Release of Intracellular Microcystin, Water Research Vol. 41, pp.3458-3464
  25. Hiroshi SAKAI, Kumiko OGUMA, Hiroyuki KATAYAMA, Shinichiro OHGAKI, (2007), Effects of low- or medium-pressure ultraviolet lamp irradiation on Microcystis aeruginosa and Anabaena variabilis, Water Research Vol. 41, pp.11-18
  26. Hiroshi SAKAI, Kumiko OGUMA, Hiroyuki KATAYAMA and Shinichiro OHGAKI, (2005), Low- or Medium-pressure UV Lamp Inactivation of Microcystis aeruginosa
    Journal of Water and Environment Technology, Vol. 3, No. 1, pp.55-61



　Presentations (Please see laboratory HP for after 2019.)  at International Conferences 

  1. Hiroshi Sakai , Olivier Autin, Simon Parsons (2019.10.7-10) Change in Haloacetic Acid Formation Potential during UV and UV/H2O2 Treatment of Model Organic Compounds, International Water Association, The 7th IWA Special Contentsist Conference on Natural Organic Matter in Water, Tokyo, Japan
  2. Mei Satake, Hiroshi Sakai , Yasuhiro Arai, Satoshi Takizawa (2019.7.10) Report Card Indexes for Ageing and Maintenance Assessment of Water supply Infrastructure, The 11th International Symposium on Water Supply Technology, Yokohama, Japan
  3. Kimiko Yamazaki, Hiroshi Sakai, Toyono Inakazu, Akira Koizumi, Katsuhide Yokoyama, Taku Kanami, Shinichi Kimura and Tomoya Kaneyasu (2018.9.20) Analysis on the Characteristics of the Manganese Content of Basin Soil of Ogouchi Reservoir, International Water Association, World Water Congress & Exhibition 2018, Tokyo, Japan
  4. Hiroshi Sakai, Shane Htet Ko (2018.9.19) Household Water Treatment Practice at Rural Areas of Myanmar and Their Perception to New Treatment Technologies, International Water Association, World Water Congress & Exhibition 2018, Tokyo, Japan
  5. Hiroshi Sakai, Pierre Callaud, Koji Kosaka and Satoshi Takizawa (2015.10.30) Degradation of 9 N-Nitrosamines in water by UV irradiation, Korean Society of Environmental Engineers, IEEC 2015 Conference, Busan, Korea
  6. Hiroshi Sakai, Shunsuke Tokuhara, Michio Murakami, Koji Kosaka, Kumiko Oguma, Satoshi Takizawa (2015.9.22) Comparison between chlorination and chloramination in the C-DBP and N-DBP formation potentials, International Water Association, 6th IWA-Aspire Conference, Beijing, China
  7. Hiroshi Sakai, Shunsuke Yamamoto, Satoshi Takizawa (2015.9.21) Restructuring of Water Distribution Systems on Future Urban Structure Scenarios in Aging and Depopulating Society, International Water Association, 6th IWA-Aspire Conference, Beijing, China
  8. Shane Htet Ko, Anil Kumar Anal, Hiroshi Sakai (2015.8.5) Antibiotic Resistance of Fecal Indicator Bacteria of Drinking Water Sources at Ayeyarwady Delta Region of Myanmar, Water and Environment Technology Conference 2015, Tokyo, Japan
  9. Hiroshi Sakai , Shane Htet Ko (2015.5.16) Water Treatment Practice at Rural Areas of Myanmar and Possible Contribution by Environmental Engineering Technology, Science Council of Asia, 15th SCA conference, Siem Reap, Cambodia
  10. Surapong RATTANAKUL, Kumiko OGUMA, Hiroshi SAKAI and Satoshi TAKIZAWA (2014.6.28) Inactivation of viruses by combination processes of UV and chlorine, The Water and Environment Technology Conference 2014, Tokyo, Japan
  11. Chunpeng Zhang, Jenyuk  Lohwacharin, Hiroshi Sakai, Kumiko Oguma, Satoshi Takizawa (2014.6.17) Effects of ion uptake on dispersion stability of titanium dioxide nanoparticles in aquatic phase, IWA Special Contentsist Conference on Advances in particle science and separation: from mm to nm scale and beyond, Sapporo, Japan
  12. A. Phetrak, J. Lohwacharin, H. Sakai, M. Murakami, K. Oguma and S. Takizawa, Removal of Disinfection By-Products Precursors from Low-Suva Water by Anion Exchange Resins, NOM5 Down Under (2013) IWA Natural Organic Matter Special Contentsist Conference, Perth, Australia
  13. Hiroshi Sakai, Koji Kosaka, Satoshi Takizawa (2013.9.24) Degradation of N-Nitrosodimethylamine (NDMA) by KrCl and Xenon-fluorescent Excimer UV Lamp, IOA-IUVA, 7th World Congress, Las Vegas, USA
  14. Kumiko Oguma, Ryo Kita, Hiroshi Sakai, Michio Murakami and Satoshi Takizawa (2013.9.24) Evaluation of Water Disinfection Systems using UV Light Emitting Diodes, IOA-IUVA, 7th World Congress, Las Vegas, USA
  15. Chunmei Yang, Satoshi Takizawa, Shuili Yu, Hiroshi Sakai, Michio Murakami, Kumiko Oguma, Fangbo Zhao, Hee-Deung Park (2013.9.10) Characterization of DOM in Drinking Water Sources in the Yangtze River Delta, China, 5th IWA-Aspire Conference, International Water Association, Daejeon, Korea
  16. Athit Phetrak, Jenyuk Lohwacharin, Hiroshi Sakai, Michio Murakami, Kumiko Oguma and Satoshi Takizawa (2013.9.9) Simultaneous Removal of Dissolved Organic Matter and Bromide from Drinking Water Source by Anion Exchange Resins for Controlling Disinfection By-Products, Daejeon, Korea
  17. Chunpeng Zhang, Hiroshi Sakai, Jenyuk Lohwacharin, Kumiko Oguma, Satoshi Takizawa (2013.6.17-19) Effects of algogenic organic matter on aggregation of TiO2 nano particles, International Water Association, 8th IWA Special Contentsist Conference on Assessment and Control of Micropollutants/Hazardous Substances in Water, Zurich, Switzerland
  18. Phetrak Athit, Takizawa Satoshi, Lohwacharin Jenyuk, Murakami Michio, Oguma Kumiko and Sakai Hiroshi (2012.12.8) Dissolved Organic Matter (DOM) Removal Mechanisms by Anion Exchange Resins (AERs), International Water Association, The 4th Asia-Pacific Young Water Professionals Conference 2012, Tokyo, Japan
  19. Chunmei Yang, Satoshi Takizawa, Shuili Yu, Hiroshi Sakai, Michio Murakami, Kumiko Oguma, Fangbo Zhao, Hee-Deung Park (2012.12.8) Water quality characteristics of dringking water sources in Southern China, International Water Association, The 4th Asia-Pacific Young Water Professionals Conference 2012, Tokyo, Japan
  20. Ying Zhang, Jenyuk Lohwacharin, Kumiko Oguma, Hiroshi Sakai, Michio Murakami, and S. Takizawa (2012.6.20) Particle Separation without External Driving Force: New Findings on Particle Exclusion and Phase Separation by Hydrophilic Surfaces, International Water Association, Berlin, Germany
  21. Miho Kuroiwa, Takako Masuda, Takuo Omura, Aunnop Wongrueng, Kumiko Oguma, Hiroshi Sakai, Michio Murakami, Satoshi Takziawa, (2012.4.24) Membrane fouling in sea water desalination processes caused by harmful dinoflagellate Cochlodinium polykrikoides, European Desalination Society, Conference and Exhibition on Desalination for the Environment Clean Water and Energy, Barcelona, Spain.
  22. Takuya Ishida, Satoshi Takizawa, Naoko Watanabe, Michio Murakami, Hiroshi Sakai, Kumiko Oguma, (2012.4.23) Optimum operation of desalination plant to minimize power consumption and water shortage risks in Okinawa, Japan, European Desalination Society, Conference and Exhibition on Desalination for the Environment Clean Water and Energy, Barcelona, Spain.
  23. Satoshi Takizawa, Aunnop Wongrueng, Hiroshi Sakai, and Kumiko Oguma, (2011.10.28) Removal of Organic Matter by Ceramic Membrane at High Temperature, 2nd Ameli-Eaur International Workshop, Sapporo, Japan
  24. Le Ngoc Cau, Satoshi Takizawa, Tomochika Tokunaga, Takeshi Hayashi, Michio Murakami, Hiroshi Sakai, Nga Tran, (2011.10.5) Characterization of groundwater and pore water quality in Hanoi city, 4th IWA-Aspire Conference, International Water Association, Tokyo, Japan
  25. Michio Murakami, Hiroshi Nishikoori, Hiroshi Sakai, Kumiko Oguma, Hideshige Takada, Satoshi Takizawa, (2011.10.4-5) Evaluation of contribution from non-point sources to perfluorinated surfactants in the Iruma River by using boron as a wastewater tracer, 4th IWA-Aspire Conference, International Water Association, Tokyo, Japan
  26. Athit Phetrak, Jenyuk Lohwacharin, Naoko Watanabe, Michio Murakami, Hiroshi Sakai, Kumiko Oguma, Satoshi Takizawa, (2011.10.4) Competitive  Removal  of  Dissolved  Organic  Matter  (DOM)  and  Inorganic  Anions  by  Anion  Exchange  Resins (AERs) , 4th IWA-Aspire Conference, International Water Association, Tokyo, Japan
  27. Chunmei YANG, Michio MURAKAMI, Kumiko OGUMA, Hiroshi SAKAI, Satoshi TAKIZAWA, (2011.10.4) Influence of pH and coexisting ions on perchlorate rejection
     by reverse osmosis membranes, 4th IWA-Aspire Conference, International Water Association, Tokyo, Japan
  28. Yu Yang, Hiroshi Sakai, Naoko Watanabe, Jenyuk Lohwacharin, Michio Murakami, Kumiko Oguma, Satoshi Takizawa, (2011.10.3) Removal of dissolved organic matter and phosphate by Ferrihydrite adsorption for drinking water treatment , 4th IWA-Aspire Conference, International Water Association, Tokyo, Japan
  29. Yu Yang, Satoshi Takizawa, Hiroshi Sakai , Michio Murakami, Naoko Watanabe, (2011.9.27) Removal of organic matter and phosphate using ferrihydrite for reduction of microbial regrowth potential, International Water Assocaition, 8th international conference on water reclamation & reuse, Barcelona, Spain
  30. Hiroshi SAKAI, Tatsuro TAKAMATSU, Koji KOSAKA, Naoyuki KAMIKO, Satoshi TAKIZAWA, (2011.9.20) Degradation of N-Nitrosodimethylamine (NDMA) by 222 nm and 254 nm UV light, IOA-IUVA, 2nd North American Conference On Ozone, Ultraviolet & Advanced Oxidation Technologies, Toronto, Canada
  31. Jenyuk Lohwacharin, Yang Yu, Naoko Watanabe, Athit Phetrak, Hiroshi Sakai, Michio Murakami, Kumiko Oguma, and Satoshi Takizawa, (2011.7.27) Characterization of DOM removal by full-scale biological activated carbon (BAC) filters having different ages, International Water Association, Fourth IWA Special Contentsty Conference Natural Organic Matter, California, USA
  32. Michio Murakami, Nguyen Van Huy, Hiroshi Sakai, Kumiko Oguma, Koji Kosaka, Mari Asami, Satoshi Takizawa, (2011.7.12) Occurrence and formation potential of N-nitrosodimethylamine in groundwater and rivers in metropolitan Tokyo, International Water Association, Assessment and control of micropollutants / hazardous substances in water, Sydney, Australia
  33. Hiroshi SAKAI, Koji Kosaka, Satoshi Takizawa (2011.5.25) Effect of wavelength on UV-degradation of N-Nitrosodimethylamine (NDMA), IOA-IUVA World Congress, Paris, France
  34. Hiroshi SAKAI, Tatsuro TAKAMATSU, Kumiko OGUMA, Michio MURAKAMI, Koji KOSAKA, Mari ASAMI, Satoshi TAKIZAWA, (2010.6.28), Influence of Nitrate on UV-degradation of N-Nitrosodimethylamine (NDMA), Technology, Applications and Advancements in UV and Ozone, Singapore International Water Week 2010, Singapore, Singapore 
  35. Hiroshi SAKAI, Hiroyuki KATAYAMA, Kumiko OGUMA and Shinichiro OHGAKI, (2009.10.20), Effect of Photoreactivation on UV Inactivation of Microcystis aeruginosa, 3rd IWA-Aspire Conference, International Water Association, Taipei, Taiwan 
  36. Hiroshi SAKAI, Kumiko OGUMA, Hiroyuki KATAYAMA, Shinichiro OHGAKI, (2009.9.22), UV treatment against indigenous Microcystis species and its potential to cause microcystin release and change of aquatic biota, 5th UV World Congress, International Ultraviolet Association, Amsterdam, Netherlands 
  37. Hiroshi SAKAI, Hiroyuki KATAYAMA, Kumiko OGUMA, Takamichi KAWASAKI, Yasushi ISERI, Masayoshi MORI, Mitsuhiro KANAO, Shinichiro OHGAKI, (2009.9.1), Growth inhibition of indigenous Microcystis species in a lake using a medium-pressure UV treatment system, 19th IOA World Congress, International Ozone Association, Tokyo, Japan 
  38. Hiroshi SAKAI, Hiroyuki KATAYAMA, Kumiko OGUMA, Shinichiro OHGAKI, (2008.10.30), Control of cyanobacterial bloom and cyanotoxin occurrence by UV irradiation,The 6th International Symposium on Southeast Asian Water Environment, Bandung, Indonesia
  39. SAKAI Hiroshi, OGUMA Kumiko, KURASHIGE Naoki, KATAYAMA Hiroyuki, OHGAKI Shinichiro, (2005.05.24), Repression of algal bloom by low- or medium-pressure UV lamp, International Ultraviolet Association, 3rd International Congress on Ultraviolet Technologies, Whistler, Canada
  40. SAKAI Hiroshi, OGUMA Kumiko, KATAYAMA Hiroyuki, OHGAKI Shinichiro, (2004.10.05), Low- or Medium-pressure UV Lamp Inactivation of Microcystis aeruginosa
    International Ultraviolet Association, 2nd Asia Conference on Ultraviolet Technologies for Environmental Applications, Tokyo, Japan



　Workshops and Invited Talks

  1. Yasuhiro Arai, Akira Koizumi, Hiroshi Sakai, Kimiko Yamazaki, Chikafusa Sato (2017.5.25) 16th Seoul-Tokyo Forum 2017
  2. Hiroshi SAKAI, (2010.6.15), Research and Educations for Sustainable Urban Regeneration, 10th Science Council of Asia (SCA) Conference, Workshop, SCA Joint Project on Sustainable Water Resources Management in Asia
  3. Hiroshi SAKAI, (2009.10.23), Kinetics of Microcystis aerugionsa growth and Intracellular Microcystins Release after UV Irradiation. International Workshop on Water and Wastewater Treatment, National Cheng Kung University, Taiwan
  4. Hiroshi SAKAI (2009.3.25), Water Environment in Hue City in the Growing Economy, cSUR-UT International Symposium on Vulnerability in Cities 2009, Cities in Vulnerability: New Challenges Ahead

　Other publications

  1. Hiroshi SAKAI and Haruna WATANABE (2013) Scenes of Water Use in Delhi, India, and Kathmandu, Nepal, Journal of Asian Urbansim, No.8.



    　Thesis



    　Award

     

    　 Address


    　　1-1 Minami-Osawa, Hachioji-City, Tokyo, 192-0397, JAPAN
    　　Phone +81-42-677-1111 (Ext. 4583)
    　　E-mail:     h_sakai@tmu.ac.jp


    　 Links


    　　Tokyo Metropolitan University
    　　Faculty of Urban Environmental Sciences, Tokyo Metropolitan University
    　　Division of Civil and Environmental Engineering, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University