The distribution of time for Clark's flow and risk assessment for the activities of pert network structure

Authors

  • Duško Letić Technical Faculty 'Mihajlo Pupin', Zrenjanin
  • Vesna Jevtić Technical Faculty 'Mihajlo Pupin', Zrenjanin

DOI:

https://doi.org/10.2298/YJOR0901195L

Keywords:

simulation, mathematical model, risk assessment

Abstract

This paper presents the ways of quantification of flow time qualifications that can be used for planning or other stochastic processes by employing Clark's methods, central limit theorem and Monte Carlo simulation. The results of theoretical researches on superponed flow time quantification for complex activities and events flow in PERT network for project management are also presented. By extending Clark's research we have made a generalization of flow models for parallel and ordinal activities and events and specifically for their critical and subcritical paths. This can prevent planning errors and decrease the project realization risk. The software solution is based on Clark's equations and Monte Carlo simulation. The numerical experiment is conducted using Mathcad Professional.

References

Clark, C.E., “The greatest of finite set of random variables”, Operations Research, 12 (9) 145-162, 1961.

Slyke Van, M. R., “Monte Carlo methods and PERT problem”, Operations Research, 11 (5) 839-860, 1963.

Dodin, B., “Determining the (k) most critical paths in PERT networks”, Operations Research, 32 (4) 859-877, 1984.

Letić, D., Edukativni i opšti model kritičnih protoka materijala PD strukture, (doktorska disertacija), Tehnički fakultet "Mihajlo Pupin", Zrenjanin, 1996.

Letić, D., Davidović, B., Berković, I., and Petrov, T., Mathcad 13 u matematici i vizuelizaciji, Kompjuter biblioteka, Čačak, 2007.

Haga, A. W., and O’Keefe, T., "Crashing PERT networks: A simulation approach", 4th International conference of the Academy of Business and Administrative Sciences Conference Quebec City, Canada, 2001.

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Published

2009-03-01

Issue

Section

Research Articles