时 间：2013-03-12 下午 1:30 – 3:00
地 点：嘉定校区C112
主持人：同济大学经济管理学院 苏强 教授
Contract and Advance Cancellation of MRI Time Slots for Stroke Patients by Monte Carlo Optimization and Dynamic Programming
In this talk, I will first give a brief presentation of healthcare engineering research in the world. I will then present research directions and research projects in my research teams in France and in China. The second part of the presentation will focus on a series of our research works on managing diagnostic resources for stroke patients. Quick diagnosis is critical to stroke patients but it relies on expensive and heavily used imaging equipment. This results in long waiting times with potential threats to patient’s life. It is important for neurovascular departments treating stroke patients to reduce waiting times for diagnosis. This paper proposes a reservation process of MRI (Magnetic Resonance Imaging) examinations for stroke patients. The neurovascular department reserves a certain number of appropriately distributed contracted time slots (CTS) to ensure quick diagnosis of stroke patients. Additional MRI time slots can also be reserved by regular reservations (RTS). Advance cancellation of CTS is possible to avoid unused CTS. The problem consists in determining the contract and the control policy for assignment of patients to either CTS or RTS and for advance cancellation in order to reach the best compromise between the waiting times and unused CTS. Structural properties of the optimal control policy are proved by an average cost Markov Decision Process (MDP) approach. The contract is determined by combining a Monte Carlo approximation approach and local search. Extensive numerical experiments are performed to show the efficiency of the proposed approach and to investigate the impact of different parameters.
Xiaolan XIE received his Ph.D degree from the University of Nancy I, Nancy, France, in 1989, and the Habilitation à Diriger des Recherches degree from the University of Metz, France, in 1995.
Currently, he is a distinguished professor of industrial engineering, the head of the department of Healthcare Engineering of the Center for Health Engineering and the head of IEOR team of CNRS UMR 6158 LIMOS, Ecole Nationale Supérieure des Mines (ENSMSE), Saint Etienne, France. He is also a chair professor and director of the Center for healthcare engineering at the Shanghai Jiao Tong University, China. Before Joining ENSMSE, he was a Research Director at the Institut National de Recherche en Informatique et en Automatique (INRIA) from 2002 to 2005, a Full Professor at Ecole Nationale d’Ingénieurs de Metz from 1999 to 2002, and a Senior Research Scientist at INRIA from 1990 to 1999. His research interests include design, planning and scheduling, supply chain optimization, and performance evaluation, of healthcare and manufacturing systems. He is author/coauthor of over 250 publications including over 90 journal articles and five books. He has rich industrial application experiences with European industries. He is PI for various national and international projects including ANR-TECSAN HOST on management of winter epidemics, NSF China key project on planning and optimization of health care resources, French Labex IMOBS3 project on home health cares, FP6-IST6 IWARD on swarm robots for health services, FP6-NoE I*PROMS on intelligent machines and production systems, the FP5-GROWTH-ONE project for the strategic design of supply chain networks, the FP5- GRWOTH thematic network TNEE on extended enterprises.
He has been an associate editor for IEEE Transactions on Automation Science & Engineering, IEEE Transaction on Automatic Control, IEEE Transactions on Robotics & Automation and has been on the (conference) editorial board of the IEEE Robotics and Automation Society, Health Systems, and Int. J. Simulation & Process Modelling. He has a Guest Editor of various special issues on healthcare engineering and manufacturing systems. He is general chair of ORAHS’2007, IPC chair of the IEEE Workshop on Health Care Management WHCM’2010 and IPC member for many other conferences.
