Yoshifumi Yamamoto is a member of Professor Jack W. Baker's research group in the Department of Civil and Environmental Engineering at Stanford University. He is an earthquake engineer with a solid background in strong motion seismology, structural analysis, mathematics, and statistics. He focuses on artificial ground motions as input ground motions for structural analysis, especially time-frequency characteristics of artificial ground motions. Yoshifumi joined Stanford University after working for 10 years in the Japanese Construction Company, Kajima Corporation, where he is a senior coodinator in the I.T. Solutions Department. He worked on the evaluation of strong ground motions, the analysis of soil and structure interaction, high performance computing, and grid computing. Yoshifumi received his M.E. in Architecture and Civil Engineering, B.A. in Architecture from Waseda University in Japan, and M.S. in Statistics at Stanford University. Currently he is completing a Ph.D. in Structural Engineering.