TY - JFULL AU - Babak H. Tabrizi and Seyed Farid Ghaderi PY - 2015/12/ TI - An Integrated Mixed-Integer Programming Model to Address Concurrent Project Scheduling and Material Ordering T2 - International Journal of Industrial and Manufacturing Engineering SP - 1959 EP - 1963 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10002980 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 107, 2015 N2 - Concurrent planning of project scheduling and material ordering can provide more flexibility to the project scheduling problem, as the project execution costs can be enhanced. Hence, the issue has been taken into account in this paper. To do so, a mixed-integer mathematical model is developed which considers the aforementioned flexibility, in addition to the materials quantity discount and space availability restrictions. Moreover, the activities duration has been treated as decision variables. Finally, the efficiency of the proposed model is tested by different instances. Additionally, the influence of the aforementioned parameters is investigated on the model performance. ER -