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Letter to the Editor---Critical Path Planning---PERT Integration

Author

Listed:
  • R. A. Bildson

    (Operations Research Department, General Motors Research Laboratories)

  • J. R. Gillespie

    (Operations Research Department, General Motors Research Laboratories)

Abstract

The Critical Path Programming System, even though restricted to project planning situations in which network structure and activity statistics are invariant during reduction of project duration, is proving to be a practical and useful technique. In fact, the efficiency of the algorithm developed by Kelley (Kelley, James E., Jr. 1961. Critical-path planning and scheduling: mathematical basis. Opns Res. 9 296--320.) for project time reduction permits one to adjust rapidly and inexpensively to changes in network structure or activity time-cost estimates as these changes develop. However, the effects of random variations in activity time estimates on earliest event occurrence time and project duration are not evaluated in the basic model described by Kelley, and the incorporation of the PERT procedure provides additional information concerning these effects.

Suggested Citation

  • R. A. Bildson & J. R. Gillespie, 1962. "Letter to the Editor---Critical Path Planning---PERT Integration," Operations Research, INFORMS, vol. 10(6), pages 909-912, December.
    • Handle: RePEc:inm:oropre:v:10:y:1962:i:6:p:909-912
    DOI: 10.1287/opre.10.6.909
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    Cited by:

    1. R L Bregman, 2009. "Preemptive expediting to improve project due date performance," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 60(1), pages 120-129, January.

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