Prof. Steve Chapra in Tufts Univ., 

My Brother in Life and Modeling

Water Quality Modeling and Management Laboratory, CNU

Korea International Water Week Opening Session,  Daegu, Korea, 2019

Professors' Chorus Concert

Chungnam National University

Stockholm World Water Week Preparatory Meeting

Stockholm, Sweden, 2019

Integrated Water Management Conference,  Seoul, Korea, 2019

IWA Watermatex_2019 Conference,

Copenhagen, Denmark, 2019

Meeting of Min. of Environment Korea and GWP(Global Water Partnership), Daegu, Sept, 2019