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Optimal Control and Equilibrium Behavior of Production-Inventory Systems

Author

Listed:
  • Owen Q. Wu

    () (Stephen M. Ross School of Business, University of Michigan, Ann Arbor, Michigan 48109)

  • Hong Chen

    () (Sauder School of Business, University of British Columbia, Vancouver, British Columbia V6T 1Z2, Canada)

Abstract

The relationship between commodity inventory and short-term price variations has received considerable attention, but the understanding has been limited to single-stage cross-sectional relation. In this paper, we aim to deepen our understanding of the inventory-price relationship in two dimensions: across time and across production stages. We first examine an individual firm controlling production and two stages of inventory under uncertain input and output prices and operating costs. We next establish and characterize the rational expectations equilibrium for an economy in which competitive production firms link a raw material market and a finished goods market, with uncertain and price-sensitive supply and demand. We characterize the dynamics of inventory, market price, and gross margin based on theoretical analysis, simulation, and empirical evidence from the petroleum industry. We find that inventory fluctuations lag behind price variations, and the length of the lags depend on how far the inventory is from the source of the supply or demand shocks. We also find that shocks are both dampened and delayed when propagating through the production stages, and that shocks have a prolonged effect on inventories and prices at both stages.

Suggested Citation

  • Owen Q. Wu & Hong Chen, 2010. "Optimal Control and Equilibrium Behavior of Production-Inventory Systems," Management Science, INFORMS, vol. 56(8), pages 1362-1379, August.
  • Handle: RePEc:inm:ormnsc:v:56:y:2010:i:8:p:1362-1379
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    File URL: http://dx.doi.org/10.1287/mnsc.1100.1186
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Ankur Goel & Genaro J. Gutierrez, 2011. "Multiechelon Procurement and Distribution Policies for Traded Commodities," Management Science, INFORMS, pages 2228-2244.
    2. Forgionne, Guisseppi & Guo, Zhiling, 2009. "Internal supply chain coordination in the electric utility industry," European Journal of Operational Research, Elsevier, vol. 196(2), pages 619-627, July.
    3. repec:kap:revdev:v:20:y:2017:i:2:d:10.1007_s11147-016-9126-y is not listed on IDEAS
    4. Secomandi, Nicola & Seppi, Duane J., 2014. "Real Options and Merchant Operations of Energy and Other Commodities," Foundations and Trends(R) in Technology, Information and Operations Management, now publishers, vol. 6(3-4), pages 161-331, July.
    5. Schmitt, Thomas G. & Kumar, Sanjay & Stecke, Kathryn E. & Glover, Fred W. & Ehlen, Mark A., 2017. "Mitigating disruptions in a multi-echelon supply chain using adaptive ordering," Omega, Elsevier, vol. 68(C), pages 185-198.

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