Multimode Resource-Constrained Multiple Project Scheduling Problem under Fuzzy Random Environment and Its Application to a Large Scale Hydropower Construction ProjectReportar como inadecuado




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The Scientific World Journal - Volume 2014 2014, Article ID 463692, 20 pages -

Research Article

State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610064, China

Uncertainty Decision-Making Laboratory, Sichuan University, Chengdu 610064, China

Received 4 August 2013; Accepted 24 September 2013; Published 15 January 2014

Academic Editors: W.-C. Hong and X. S. Qin

Copyright © 2014 Jiuping Xu and Cuiying Feng. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents an extension of the multimode resource-constrainedproject scheduling problem for a large scale construction project wheremultiple parallel projects and a fuzzy random environment are considered. By taking into account the most typical goals in project management,a cost-weighted makespan-quality trade-off optimization model is constructed. To deal with the uncertainties, a hybrid crisp approach is used to transform thefuzzy random parameters into fuzzy variables that are subsequently defuzzifiedusing an expected value operator with an optimistic-pessimistic index. Then acombinatorial-priority-based hybrid particle swarm optimization algorithm is developedto solve the proposed model, where the combinatorial particle swarm optimization andpriority-based particle swarm optimization are designed to assign modes to activities and to scheduleactivities, respectively. Finally, the results and analysis of a practicalexample at a large scale hydropower construction project are presented to demonstrate the practicalityand efficiency of the proposed model and optimization method.





Autor: Jiuping Xu and Cuiying Feng

Fuente: https://www.hindawi.com/



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