One of important problems in supply chains management is supplier selection. In a company, there are massive data from various departments so that extracting knowledge from the company’s data is too complicated. Many researchers have solved this problem by some methods like fuzzy set theory, goal programming, multi objective programming, the liner programming, mixed integer programming, analyti...

Supplier selection is one of the most critical activities of purchasing management in a supply chain, because of the key role of supplier’s performance on cost, quality, delivery and service in achieving the objectives of a supply chain. Supplier selection is a multiple-criteria decision-making (MCDM) problem that is affected by several conflicting factors. Depending on the purchasing situation...

Associative Models were created and used for pattern recognition tasks, but recently such models have shown good forecasting capabilities; by a preprocessing of a time series and some fit of the Model. In this paper, the Gamma Classifier is used as a novel alternative for currency exchange rate forecasting, where experimental results indicate that the proposed method can be effective in the Exc...

The present study has made an attempt to discuss the effects of exchange rate volatility and price expectation on maize imports in Iran from 1980 to 2013. In doing so, using the EGARCH technique for time series econometrics, price volatility variables for both exchange rate and final price have been calculated, and the time series for these variables have been extracted. Additionally, in regard...

today, many companies have multiple channels, such as sales force, direct mail / catalog, internet and broadcast channels, telephone, etc. for providing goods and services to its customers. multiple distribution channels, despite having benefits, several challenges such as the incidence of conflict, allocation of product, free ride some members have being emerged. the aim of this study was to i...

Title of Document: ESSAYS ON INTERNATIONAL FINANCE Fernando Gabriel Im, Doctor of Philosophy, 2012 Directed By: Professor Carmen Reinhart, Department of Economics Professor Carlos Végh, Department of Economics In the first paper, I use industry-level data to investigate the impact of exchange rate arrangements on the productive structure of the economy. The identification strategy has similarit...

perishability of blood products as well as uncertainty in demand amounts complicate the management of blood supply for blood centers. this paper addresses a mixed-integer linear programming model for blood platelets production planning while integrating the processes of blood collection as well as production/testing, inventory control and distribution. whole blood-derived production methods for...

The robust portfolio selection problems have recently been studied by several researchers (e.g., see [15, 14, 17, 25]). In their work, the “separable” uncertainty sets of the problem parameters (e.g., mean and covariance of the random returns) were considered. These uncertainty sets share two common drawbacks: i) the actual confidence level of the uncertainty set is unknown, and it can be much ...