Dr. Koichi Hashiguchi is currently a head of solids and structure solutions, Ltd. and an Emeritus Professor at Kyushu University. He is the author of over 300 peer-reviewed journal papers, fellows of the Japan Society of Mechanical Engineers and of Civil Engineers, an Honorary Member of the Japanese Geotechnical Society, and also a Member of the Engineering Academy of Japan. He has additionally authored 6 books and co-authored one book on elasto-plasticity/viscoplasticity for finite deformation.