Arvid Naess is Professor of Statistics at the Norwegian University of Science and Technology in Trondheim, Norway. Over many years he has worked on a wide range of problems related to the application of probability and statistics in science and engineering. He is a recipient of the Alfred M. Freudenthal Medal from ASCE, and a Fellow of ASCE, ASME, EMI. He is an elected member of The Royal Norwegian Society (DKNVS) and The Norwegian Academy of Technological Sciences (NTVA).