روش جديد در گرت فازي براي زمانبندي پروژه هاي تحقيقاتي

The aim of this paper is to present a new applicable and suitable technique for research projects scheduling. Research projects have uncertain parameters , so there is a need for special tools and techniques for scheduling these projects. Conventional scheduling techniques are not able to model research projects or have a lot of errors. Fuzzy GERT networks using capabilities of GERT and FUZZY, is powerful tools for scheduling research projects. This paper presents a new method for solving fuzzy gert networks. In this method, activity duration time and loops trapezoidal fuzzy numbers states repetition number, and output activities from nodes of network belong to a fuzzy set. In this method, the first time gert networks Computations are done based on evaluating nodes. Process outputs are schedualated network and project fuzzy completion time. These outputs are fuzzy numbers and can be analyzed by a- cuts. This method is more applicable and needs less computation than existing fuzzy and probability gert methods. Besides, this method can get computerized and up to date easily.