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چکیده
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Time, cost, and quality are the main goals of any project. Project managers have been focused on reducing time and cost in projects since the late 1950s, when the critical path was first expressed, and thus the issue of time-cost balance arose. In recent years, the attention of project managers to reducing project execution time while obtaining the desired quality for the project has increased. This has led researchers to develop time-cost balance models that include the quality factor. In this research, the issue of time, cost, and quality balance was studied, assuming that the quality of project activities depends on time and cost. For this purpose, a three-objective planning model was formulated, considering time, cost, and quality as objective functions and considering prerequisite relationships. A fuzzy decision-making approach was used to solve the problem. In order to implement this approach, the execution time and cost of compressing time and improving the quality of activities were described as fuzzy ideals so that a fuzzy decision-making approach could be used to balance them with quality.
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