Along with the increased competition in production and service areas, many organizations attempt to provide their products at a lower price higher quality. On other hand, consideration of environmental criteria conventional supplier selection methodologies is required for companies trying promote green supply chain management (GSCM). In this regard, multi-criteria decision-making (MCDM) techniq...

The aim of this paper is to propose a robust reliable bi-objective supply chain network design (SCND) model that is capable of controlling different kinds of uncertainties, concurrently. In this regard, stochastic bi-level scenario based programming approach which is used to model various scenarios related to strike of disruptions. The well-known method helps to overcome adverse effects of disr...

Traditionally, supplier selection should simultaneously take into account numerous heterogeneous criteria, and then is a tedious task for the purchasing decision makers. It becomes especially complicated when quantity discounts are considered at the same time. Under such manner, most studies often formulate such a problem as a Multi-Objective Linear Programming (MOLP) problem, and then scale it...

This paper considers robust optimization to cope with uncertainty about the stock return process in one period portfolio selection problems involving options. The robust approach relates portfolio choice to uncertainty, making more cautious portfolios when uncertainty is high. We represent uncertainty by a set of plausible expected returns of the underlyings and show that for this set the robus...

Supplier selection in supply chain is critical strategic decision for organization’s success and has attracted much attention of both academic researchers and practitioners. Supplier selection problem consists of stochastic and recognitive uncertainties. However, the requirement of large sample size and strong subject knowledge to build suitable fuzzy membership function restrict the applicabil...

Beamforming is a widely used method of provisioning high quality wireless channels that leads to high data rates and simple decoding structures. It requires feedback of Channel State Information (CSI) from receiver to transmitter, and the accuracy of this information is limited by rate constraints on the feedback channel and by delay. It is important to understand how the performance gains asso...

this study investigates the effects of  macroeconomic variables and their role in development of foreign exchange market. the foreign exchange market is the mechanism by which a person of firm transfers purchasing power form one country to another, obtains or provides credit for international trade transactions, and minimizes exposure to foreign exchange risk. the foreign exchange transaction i...