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Activity delay patterns in project networks

Author

Listed:
  • Vazquez, Alexei
  • Marasinou, Chrysostomos
  • Kalogridis, Georgios
  • Ellinas, Christos

Abstract

Delays in activities completion drive human projects to schedule and cost overruns. It is believed activity delays are the consequence of multiple idiosyncrasies without specific patterns or rules. Here we show that is not the case. Using data for 180 construction project schedules, we demonstrate that activity delays satisfy a universal model that we call the law of activity delays. After we correct for delay risk factors, what remains follows a log-normal distribution.

Suggested Citation

  • Vazquez, Alexei & Marasinou, Chrysostomos & Kalogridis, Georgios & Ellinas, Christos, 2024. "Activity delay patterns in project networks," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 637(C).
    • Handle: RePEc:eee:phsmap:v:637:y:2024:i:c:s0378437124000785
    DOI: 10.1016/j.physa.2024.129570
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    References listed on IDEAS

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