Abstract Introduction. This study aimed to determine the criteria for choice of nine different leading ski centers that serve actively in tourism sector Turkey, calculate weights, and measure performance these centers. Material methods. In this context, data were defuzzified using CFCS method, fuzzy DEMATEL method was used affecting Then, TOPSIS applied by weights obtained with method. Results....

This paper applied a mixed integer programming approach to solve the sourcing and order allocation problem with multiple products and multiple suppliers in a supply chain. The decision process is driven bymultiple objectives and a set of constraints. Two schemes of quantity discounts are used to compare the influence upon the buying decisions. An example and an experimental test are presented t...