In the new competitive environment, selecting and planning of the supply chain is very crucial and involves evaluation of many factors. Different approaches have been applied to assess the supplier/s. Most of these studies are based upon the supplier/s' capabilities. It may be neither rational nor economical to deal with each item via a generic material control system. Furthermore, supplier/s selection not only depends on suppliers' capability, but also depends on the nature and characteristics of the parts. Little attention is given to decisions on the appropriate selecting of supplier/s, and assigning order quantities to them, especially, in case of multiple sources considering their performance and materials’ characteristics. In this paper two models are presented which locate the optimal supplier/s regarding supplier/s' capabilities and materials’ characteristics for leverage items based on references [1 and 2]. The first one is a G.P. model which considers constraints of lead-time, quality, demand, supplier/s capacity and budgets in a dynamic condition. The second one considers the problem in a contingent environment and considers criteria with normal distributions. Each model follows by an illustrative numerical example and sensitivity analysis which demonstrate the effectiveness and validation of the model
Razmi, J., & Keramati, A. (2011). Minimizing the supplying cost of leverage items: a mathematical approach. International Journal of Engineering, 24(3), 259-274.
MLA
J. Razmi; A. Keramati. "Minimizing the supplying cost of leverage items: a mathematical approach". International Journal of Engineering, 24, 3, 2011, 259-274.
HARVARD
Razmi, J., Keramati, A. (2011). 'Minimizing the supplying cost of leverage items: a mathematical approach', International Journal of Engineering, 24(3), pp. 259-274.
VANCOUVER
Razmi, J., Keramati, A. Minimizing the supplying cost of leverage items: a mathematical approach. International Journal of Engineering, 2011; 24(3): 259-274.
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