Dr. Steven L. Kramer, P.E., is a professor of civil and environmental engineering at the University of Washington. He specializes in geotechnical earthquake engineering and is author of the textbook, Geotechnical Earthquake Engineering (Prentice-Hall, 1996).
Professor Kramer has been involved in site response research, has written programs for equivalent linear and nonlinear site response, and consulted on site-response and ground failure projects in the U.S. and abroad. Professor Kramer is the recipient of the Casagrande Award and Huber Prize from ASCE, chaired the 1998 ASCE Specialty Conference on Geotechnical Earthquake Engineering and Soil Dynamics, and is a keynote speaker at the 2008 version of the same conference.

Dr. Pedro Arduino, is a professor of civil and environmental engineering at the University of Washington. He specializes in computational geomechanics with emphasis in constitutive modeling of soils, coupled formulations, contact mechanics, and general finite element solutions for geotechnical problems. He has also been involved in the development of a variety of computer-based instructional tools for geotechnical courses. Professor Arduino is author and co-author of many journal publications and reports and is very active in the professional practice. He has been involved in site-response analysis and performance-based evaluation of large bridge structures, reinforced walls and wharf structures. His current interests concentrate on the development of a framework for fluid-soil mixtures using distinct phases, and the use of 3-D finite element solutions for the analysis of soil-foundation interaction problems.