TAILIEUCHUNG - A fuzzy leader-follower game approach to interaction of project client and multiple contractors in time/cost trade-off problem

In recent years, clients often employ multiple contractors to implement different activities of the projects. Each contractor manages and implements a subset of activities according to the determined schedule and payments. | A fuzzy leader-follower game approach to interaction of project client and multiple contractors in time cost trade-off problem Journal of Project Management 3 2018 105 120 Contents lists available at GrowingScience Journal of Project Management homepage A fuzzy leader-follower game approach to interaction of project client and multiple contractors in time cost trade-off problem Ashkan Hafezalkotoba and Arian Hafezalkotobb a Department of Industrial Engineering Islamic Azad University South Tehran Branch Tehran Iran b Department of Mechanical Engineering college Islamic Azad university South Tehran Branch Tehran Iran CHRONICLE ABSTRACT Article history In recent years clients often employ multiple contractors to implement different activities of the Received July 5 2017 projects. Each contractor manages and implements a subset of activities according to the deter- Received in revised format Octo- mined schedule and payments. In this situation time cost trade-off problem becomes a distrib- ber 10 2017 uted decision making problem in which the client as leader and the contractors as followers Accepted December 5 2017 Available online pursue their own objectives. We establish a multi-objective bi-level distributed programming January 2 2018 model based on fuzzy mathematical programming for this time cost trade-off problem. The Keywords model is then developed for three common behaviors of client . profit seeking minimization Bi-level distributed programming of project time as well as combination of profit seeking and minimization of project time be- problem haviors. As the solution approaches we propose transformation method based on Karush-Kuhn- Project client Tucker conditions projects to transform bi-level programming problem to a single level one. Project contractors Numerical results reveal that the client s behaviors have measurable impact on time and cost of Leader-follower interaction activities performed by contractors. Moreover we .

• Quản lý dự án
• Leader follower interaction
• Bi level distributed programming problem
• Fuzzy leader follower game
• Time/cost trade off problem
• Project client and multiple contractors