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Plenary Speakers


Prof. Chien-Yuan Chen
National Chiayi University, Taiwan

Chien-Yuan Chen was born on Oct. 27, 1969, in Changhua City, Taiwan. He received his Ph.D. in civil and environmental engineering form University of Southern California, Los Angeles, USA, in 2001. He received his M.Sc. in civil engineering from National Cheng Kung University, Taiwan, in 1995. He was an associate research fellow (2001-2006) at Slopeland Disaster Reduction Division, National Science and Technology Center for Disaster Reduction (NCDR), Sindian District, and New Taipei City, Taiwan. He was an assistant professor and an associate professor at Department of Civil and Water Resources Engineering, National Chiayi University. He is currently as a professoat Department of Civil and Water Resources Engineering, National Chiayi University, Chiayi City, Taiwan. His research is focused on the following: disaster prevention management and system, disaster prevention education, debris flow and landslide hazards prevention and mitigation, Geotechincal engineering, GIS application and numerical modeling. He is a member of Disaster Management Society of Taiwan. He’s previous publications included: C. Y. Chen, F. C. Yu, S. C. Lin, and K. W. Cheung, “Discussion of landslide self-organized criticality and the initiation of debris flow,” Earth Surface Processes and Landform, vol. 32, i2, pp. 197-209, 2007, ect.


Prof. Shey-Huei Sheu
Providence University, Taiwan

Shey-Huei Sheu is a Chair Professor of Department of Statistics and Informatics Science at the Providence University. He is an Honorary Chair Professor of the Department of Industrial Management at the National Taiwan University of Science and Technology. He received his M.S. degree (1979) in applied mathematics from the National Tsing Hua University and his Ph.D. degree (1987) in statistics from the University of Kentucky. He has published in journals such as Naval Research Logistics, Journal of Applied Probability, RAIRO Operations Research, Microelectronics and Reliability, Reliability Engineering and System Safety, International Journal of Systems Science, Quality and Reliability Engineering International, International Journal of Reliability, Quality and Safety Engineering, Journal of the Operational Research Society, European Journal of the Operational Research, Computers and Operation Research, Computers and Industrial Engineering, Quality Engineering, Asia-Pacific Journal of the Operational Research, Communications in Statistics-Theory and Methods, Computers and Mathematics with Applications, Simulation Modeling Practice and Theory, Communications in Statistics-Simulation and Computation, Journal of Statistical Computation and Simulation, International Journal of Production Economics, Quality Technology and Quantitative Management, The International Journal of Advanced Manufacturing Technology, Expert Systems, International Journal of Computer Mathematics, Journal of Applied Statistics, Production Planning and Control, International Journal of Production Research, Applied Mathematical Modelling, IEEE Transactions on Reliability, and Annals of Operations Research.

Speech Title: The Imperfect Age Maintenance Policies with Random Working Times

Abstract: The purpose of this paper is to investigate imperfect maintenance policies for a system with random working times. When the system fails, itis subject to one of two types of failures with age-dependent probability: type I failure can be removed by minimal repair and type II failure must be rectified by replacement. The system is preventively replaced before type II failure at time T or at the N-th completion of working projects, whichever occurs first.The expected cost per unit time is derived as a criterion of optimality and the optimal policy that minimizes that cost is discussed analytically.