/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: SangMin_Ko https://cdn.slidesharecdn.com/profile-photo-SangMin_Ko-48x48.jpg?cb=1522818599 Ko, Sang Min Interaction Design Lab. Dept of Information and Industrial Engineering Yonsei University sangminko@yonsei.ac.kr, sangminko@gmail.com