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A robust multi-objective optimization model for project scheduling considering risk and sustainable development criteria
Environment, Development and Sustainability ( IF 4.9 ) Pub Date : 2021-01-04 , DOI: 10.1007/s10668-020-01123-z
Majid Askarifard , Hamidreza Abbasianjahromi , Mehran Sepehri , Ehsanollah Zeighami

There is limited research that considers the sustainability aspect of the projects’ schedule. The present study proposes a model to cover this gap by considering sustainable development criteria. A multi-objective model with four objective functions, including minimizing cost, risk, and socio-environmental impacts, has been presented to decrease the project’s delay. Since some of the parameters are considered under conditions of uncertainty for the proximity of problems to real projects, the robust programming method is used to deal with the uncertainty, and the epsilon-constraint method was applied to solve the multi-objective model. Several scenarios are also defined to analyze the sensitivity of robust parameters in the generation of Pareto-based solutions, and the obtained results are also investigated. In addition, the design of experiments is applied for response surface methodology to determine the optimal levels of robust parameters that can generate solutions with greater variety. A real case study has been developed to implement different steps of the proposed model. Since the outcomes of the model determine the duration of each activity according to the objectives and different levels of robust parameters, managers and project owners can use this model as a tool to make appropriate decisions for their projects’ schedules.

中文翻译:

考虑风险和可持续发展标准的用于项目调度的稳健多目标优化模型

考虑到项目时间表的可持续性方面的研究有限。本研究提出了一个模型,通过考虑可持续发展标准来弥补这一差距。提出了一个具有四个目标函数的多目标模型,包括最小化成本、风险和社会环境影响,以减少项目的延迟。由于部分参数在不确定性条件下考虑到问题与实际项目的接近程度,因此采用鲁棒规划方法处理不确定性,并应用epsilon-constraint方法求解多目标模型。还定义了几个场景来分析生成基于帕累托的解决方案的鲁棒参数的敏感性,并且还研究了获得的结果。此外,实验设计适用于响应面方法,以确定稳健参数的最佳水平,从而生成更多样的解决方案。已经开发了一个真实的案例研究来实现所提出模型的不同步骤。由于模型的结果根据目标和不同级别的稳健参数决定了每项活动的持续时间,因此经理和项目所有者可以使用该模型作为工具,为其项目进度做出适当的决策。
更新日期:2021-01-04
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