نوع مقاله : پژوهشی
تازه های تحقیق
عنوان مقاله English
نویسندگان English
In highly competitive and uncertain environments, organizations are compelled to make simultaneous decisions regarding project selection and scheduling under resource constraints and exposure to complex risks. Many existing models in the literature consider project risks independently and overlook the networked interactions among them. However, in real-world settings, the occurrence of one risk may amplify the likelihood and severity of others. This study aims to develop a novel mathematical framework to support managers in selecting the optimal portfolio of projects and scheduling activities in a way that maximizes financial returns, minimizes overall completion time, and mitigates the adverse effects of interdependent risks. Accordingly, a multi-objective mixed-integer programming model is proposed for the integrated project portfolio selection and scheduling problem, incorporating risk networks and resource constraints. To model the dependencies among risks, a Bayesian network is employed, and the conditional probabilities of risks are embedded within the decision-making structure. Due to the nonlinear nature and computational complexity of the model, nonlinear relationships are first linearized. The model is then solved using a Genetic Algorithm combined with the Enhanced Epsilon-Constraint Method. Performance evaluation through numerical experiments at different scales demonstrates that the proposed approach can generate a diverse and high-quality Pareto frontier and plays an effective role in improving the trade-off among profit, project duration, and risk exposure.
کلیدواژهها English
Copyright © Haniyeh Sadat Jebeli, Ali Namazian
License
This article is released under the Creative Commons Attribution (CC BY 4.0) license. Anyone is free to copy, share, translate, and adapt this article for any purpose, whether commercial or non-commercial, as long as proper citation is given to the authors and original publication.