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Concurrent Crashing and Overlapping in Product Development

Author

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  • Thomas A. Roemer

    (Sloan School of Management, Massachusetts Institute of Technology, 30 Wadsworth Street, E53-387, Cambridge, Massachusetts 02142)

  • Reza Ahmadi

    (Anderson School of Management, University of California at Los Angeles, Los Angeles, California 90095)

Abstract

This research addresses two common tools for reducing product development lead times: overlapping of development stages and crashing of development times. For the first time in the product development literature, a formal model addresses both tools concurrently, thus facilitating analysis of the interdependencies between overlapping and crashing.The results exhibit the necessity of addressing overlapping and crashing concurrently, and exhibit general characteristics of optimal overlapping/crashing policies. The impact of different evolution/sensitivity constellations on optimal policies is investigated, and comprehensive guidelines for structuring development processes are provided.For the special case of linear costs, an efficient procedure is presented that generates the efficient time-cost trade-off curves and determines the corresponding optimal overlapping/crashing policies. The impact of key parameters and the robustness regarding their estimates is illustrated with a simple two-stage example.

Suggested Citation

  • Thomas A. Roemer & Reza Ahmadi, 2004. "Concurrent Crashing and Overlapping in Product Development," Operations Research, INFORMS, vol. 52(4), pages 606-622, August.
    • Handle: RePEc:inm:oropre:v:52:y:2004:i:4:p:606-622
    DOI: 10.1287/opre.1040.0125
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    References listed on IDEAS

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    7. Choi, Byung-Cheon & Park, Myoung-Ju, 2015. "A continuous time–cost tradeoff problem with multiple milestones and completely ordered jobs," European Journal of Operational Research, Elsevier, vol. 244(3), pages 748-752.
    8. Lin, Jun & Chai, Kah Hin & Wong, Yoke San & Brombacher, Aarnout C., 2008. "A dynamic model for managing overlapped iterative product development," European Journal of Operational Research, Elsevier, vol. 185(1), pages 378-392, February.
    9. Qian, Yanjun & Xie, Min & Goh, Thong Ngee & Lin, Jun, 2010. "Optimal testing strategies in overlapped design process," European Journal of Operational Research, Elsevier, vol. 206(1), pages 131-143, October.
    10. Byung-Cheon Choi & Myoung-Ju Park, 2020. "Scheduling two projects with controllable processing times in a single-machine environment," Journal of Scheduling, Springer, vol. 23(5), pages 619-628, October.
    11. Lin, Jun & Chai, Kah Hin & Brombacher, Aarnout C. & Wong, Yoke San, 2009. "Optimal overlapping and functional interaction in product development," European Journal of Operational Research, Elsevier, vol. 196(3), pages 1158-1169, August.
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    13. Nelson, Richard Graham & Azaron, Amir & Aref, Samin, 2016. "The use of a GERT based method to model concurrent product development processes," European Journal of Operational Research, Elsevier, vol. 250(2), pages 566-578.
    14. Cheryl Gaimon & Manpreet Hora & Karthik Ramachandran, 2017. "Towards Building Multidisciplinary Knowledge on Management of Technology: An Introduction to the Special Issue," Production and Operations Management, Production and Operations Management Society, vol. 26(4), pages 567-578, April.
    15. Choi, Byung-Cheon & Chung, Jibok, 2014. "Complexity results for the linear time–cost tradeoff problem with multiple milestones and completely ordered jobs," European Journal of Operational Research, Elsevier, vol. 236(1), pages 61-68.
    16. Gülru F. Özkan-Seely & Cheryl Gaimon & Stylianos Kavadias, 2015. "Dynamic Knowledge Transfer and Knowledge Development for Product and Process Design Teams," Manufacturing & Service Operations Management, INFORMS, vol. 17(2), pages 177-190, May.
    17. Lin, Jun & Qian, Yanjun & Cui, Wentian & Miao, Zhanli, 2010. "Overlapping and communication policies in product development," European Journal of Operational Research, Elsevier, vol. 201(3), pages 737-750, March.
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