Abstract

Background & Purpose: The present research seeks to provide a suitable method for the economic evaluation of defense projects under conditions of uncertainty.



Methodology: In this research, the modified internal rate of return (MIRR) method has been examined and compared with other methods of economic evaluation of projects, then a proposed method to calculate this method in the case that the primary data is It is provided to be definitive. The main goal of this research is the economic evaluation of defense projects in the case that the initial data are uncertain, therefore, the mentioned method is proposed using fuzzy logic for problems with uncertain data. Because this research seeks to find viable ways to solve practical problems in the evaluation of organizational projects, it is a practical research and on the other hand, because it provides a new method in the evaluation of projects in the state of uncertainty. It is considered a development method.

Findings: According to the studies conducted and the comparison of the results of the economic evaluation of projects in different economic conditions using NPV and IRR methods, it was determined that if the MIRR method is used with common lifetime, the said method It will lead to reliable results.

Conclusion: According to the results obtained from the modified internal rate of return method in the fuzzy state, it can be concluded that this method can be considered as a suitable criterion for the economic evaluation of defense projects under conditions of uncertainty.