Six Sigma Pilot Project Selections Using an MCDM Approach

Six sigma as a quality management tool is a useful method for achieving competitive advantage over rival companies in the competitive environment of both manufacturing and service enterprises. So successful implementation of six sigma project is very important for top managers, because many companies could not achieve expected results and even completely failed. In this article, we present a model for aiding top managers in selecting the most important appropriate business units for pilot testing of six sigma. For the evaluation of projects, reviewing the literature and decision team’s opinion, we defined six main criteria and relevant sub criteria for use in a MCDM project selection. Projects with maximum co-ordination with business strategic goals and maximum probability of success are prioritized and ranked by an AHP saaty method. Finally we applied the proposed model in a real-life scenario in one of the leading service companies in Iran to show the applicability of the model.Keywords: Six Sigma; Analytical hierarchy process (AHP); MCD

A new DEA-GAHP method for supplier selection problem

Supplier selection is one of the most important decisions made in supply chain management. Supplier evaluation problem has been in the center of supply chain researcher’s attention in these years. Managers regard some of these studies and methods inappropriate due to simple, weight scoring methods that generally are based on subjective opinions and judgments of decision maker units involved in the supplier evaluation process yielding imprecise and even unreliable results. This paper seeks to propose a methodology to integrate data envelopment analysis (DEA) and group analytical hierarchy process (GAHP) for evaluating and selecting the most efficient supplier. We develop a methodology, which consists of 6 steps, one by one has been introduced in lecture and finally applicability of proposed method is indicated by assessing 12 suppliers in a numerical example