題 目：Application of Stochastic Maintenance Models to Dependable Computing
報告人：Professor Tadashi Dohi
Department of Information Engineering, Hiroshima University, Japan
時 間：2009年12月4日 上午10：00—11：00
Stochastic maintenance models have been developed in the long history of operations research/management science, but have been out of scope of real engineering problems instead of their interesting natures. In this tutorial talk I show that some typical stochastic maintenance models such as a simple age replacement model are applicable to software fault-tolerance techniques. More specifically, I introduce the concept of software againg which can be observed in real operational software systems and a fault management technique, called software rejuvenation. In fact, the software rejuvenation is regarded as one of the most effective low-cost software fault-tolerant techniques based on environment diversity philosophy. I overreview several stochastic models to trigger the rejuvenation from the standpoints of modeling/estimation.
報告人簡介：
Tadashi Dohi received the B.Sc. (Engineering), M.Sc.(Engineering) and Ph.D. (Engineering) from Hiroshima University, Japan, in 1989, 1991 and 1995, respectively.In 1992, he joined the Department of Industrial and Systems Engineering, Hiroshima University, Japan, as an Assistant Professor. Now, he has been working as a Full Professor in the Department of Information Engineering,Graduate School of Engineering, Hiroshima University,Japan, since 2002. In 1992 and 2000, he was a Visiting Research Scholar in University of British Columbia, Canada and Duke University, USA, respectively, on leave of absence from Hiroshima University. He is a Regular Member of ORSJ, JSIAM, IEICE, REAJ and IEEE. Dr. Dohi’s main research topics are software reliability,software aging/rejuvenation, checkpoint placement, reliability analysis and estimation for hardware products, analysis and estimation of maintenance (replacement, repair and inspection) models, analysis of stochastic production/inventory models,performance evaluation, computational statistics, information security assessment, dynamic power management, real estate finance, etc. He published 162 journal papers and 176 peer-refereed conference papers. Dr. Dohi served as a general chair of several international conferences like AIWARM 2004-2008, APARM 2010 and WoSAR 2008, and as a Program Committee Chair of RASOR 2005-2007. He also worked as a Program Committee Member of some top conferences, IEEE/IFIP DSN, IEEE ISSRE, IEEE PRDC, ICAS, ATC, SEA, et al.Currently, he is a Steering Committee Member of APARM and ISAS.Dr. Dohi is an Associate Editor of Asia-Pacific Journal of Operational Research, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, and an Editorial Board Member of Journal of Reliability and Risk,Journal of Autonomic and Trusted Computing, and International Journal of Reliability and Quality Performance.
