TITLE:   PRODUCTION PLANNING MODELS WITH RESOURCES SUBJECT TO CONGESTION

SPEAKER:   Reha Uzsoy

ABSTRACT:

A fundamental difficulty in developing effective production planning models has been accurately reflecting the nonlinear dependency between workload and lead times. We develop a mathematical programming model for production planning in multiproduct, single stage systems that captures the nonlinear dependency between workload and lead times. We then use outer linearization of this nonlinear model to obtain a linear programming formulation and extend it to multistage systems. Extensive computational experiments validate the approach and compare its results to conventional models that assume workload-independent planning lead times. We conclude with some future directions including applications to integrated planning of production starts and safety stocks.

Bio: Reha Uzsoy is Clifton A. Anderson Distinguished Professor in the Edward P. Fitts Department of Industrial and Systems Engineering at North Carolina State University. He holds BS degrees in Industrial Engineering and Mathematics and an MS in Industrial Engineering from Bogazici University, Istanbul, Turkey. He received his Ph.D in Industrial and Systems Engineering in 1990 from the University of Florida. His teaching and research interests are in production planning, scheduling, and supply chain management. He is the author of one book, two edited books, and over eighty refereed journal publications. Before coming to the US he worked as a production engineer with Arcelik AS, a major appliance manufacturer in Istanbul, Turkey. He has also worked as a visiting researcher at Intel Corporation and IC Delco. His research has been supported by the National Science Foundation, Intel Corporation, Hitachi Semiconductor, Harris Corporation, Kimberly Clark, Union Pacific, Ascension Health and General Motors. He was named a Fellow of the Institute of Industrial Engineers in 2005, Outstanding Young Industrial Engineer in Education in 1997 and a University Faculty Fellow by Purdue University in 2001, and has received awards for both undergraduate and graduate teaching.