时间：5月15日（星期五）下午1👂🏿：00开始 

地点🌋：舜德楼北510会议室 

报告人🫶：Dr.Min Zhang, the State University of New York at Buffalo 

报告题目：Modeling of Workflow Congestion andOptimization of Flow Routing in a Manufacturing/Warehouse Facility

报告摘要：This paper discusses the notion of workflow congestion in the context of material handling equipment interruptions in a manufacturing or warehousing facility. Development of a combination of probabilistic and physics-based models for workflow interruptions permits evaluation of the expected link travel time. The problem is then of routing in a way that minimizes total expected travel time. The rerouting problem is modeled as a multicommodity flow problem with link capacity design. A greedy upper bounding and Lagrangean relaxation algorithm are developed to solve this efficiently. To calibrate our modeling process we develop an object-oriented simulation model that explicitly considers various workflow interruptions. Our major finding is that rerouting traffic in a congested facility can significantly alleviate congestion delays and improve the efficiency of material movement. A managerial insight derived from this work is that rerouting is most effective in medium traffic-intensity situations.

报告人简介：Min Zhang received her bachelor and master degrees in Systems Engineering from Xiamen University, and her Ph.D. degree in Industrial Engineering from the State University of New York at Buffalo. Dr. Zhang published papers in Management Science and European Journal of Operational Research. Her research interests include Facility Layout & Planning, Material Handling and Operations Research Applications in Production Systems. Dr. Zhang now works in a big car rental company in USA.

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