چكيده به لاتين
Project portfolio selection and resource allocation are one of the key issues facing organizations. When selecting projects in a project portfolio and allocating resource to them, organizations usually attempt to maximize the expected return of a portfolio for a given level of portfolio risk, or equivalently minimize risk for a given level of expected return. Since the results and consequences of projects have short-term and long-term effects on social, economic and environmental conditions, in addition to the expected return and risk, other aspects such as sustainability should also be considered in selecting the projects. The aim of this article is to develop a model that not only help organizations to manage risk and achieve higher return, but would also allow carrying out sustainable projects, and promoting greater environmental responsibility. In this study 15 Sustainability criteria were chosen and grouped on the basis of the analysis of the literature and different standards relating to sustainability applicable in the construction industry. Then by combining all these criteria, the sustainability index of a project was obtained to evaluate the sustainability of projects. However, subject to certain modifications (i.e., substituting the proposed composite sustainability index of a project which is intended to assess the level of sustainability of a construction project with another index for measuring the sustainability of a project in any other economic sector), this model could be used in allocating financial resources in companies operating in different economic sectors. Finally, multi-objective optimization models and goal programming have been used to optimize the portfolio. The results of using this model to select a project portfolio from 20 projects and allocate financial resources to them showed that financial resource allocation to a project with the highest return among other projects, is 164 due to it’s low level of sustainability index, while the allocation of financial resources to another project with lower return but more sustainability is 411.
