ABSTRACT.One of the most important aspects for companies' success is the relationship between companies and their suppliers. Consequently, the way that a supplier is selected is crucial to the outcome of the business. Thus, we propose a multicriteria decision support model with two phases: the analysis of the products/services from suppliers that need to be evaluated, using PROMSORT, and the analysis of the suppliers of such products/services which is considered critical, using PROMETHEE II. The model was applied to a Distribution Center of an important Brazilian retailer which serves stores in the North and Northeast regions of Brazil. Using the proposed model, companies can focus their attention on those products or services that have the greatest impact on their business results. The model predicts that different decision-making processes should be applied, in accordance with the class of importance into which the products or services are classified.
According to Scott et al. (2015:226), given the complexity and length of some supply chains, issues that arise and that involve the stakeholders impacted by supplier selection are complex and varied. To Chai and Ngai (2015:215), suppliers are important to a company because of their roles and influence in supply chains.According to Ekici (2013:574), most companies procure raw materials from outside suppliers where there are competing suppliers with different capacities, pricing, service and quality levels. Osman and Demirli (2010:97-98) state that increasing the efficiency of the partners in the supply chain becomes the highest priority for any supply chain because of the highly competitive nature of the current global market. Therefore, supplier selection is a crucial issue from both the managerial Background: Increasing competition among companies in the oil and gas industry results in a greater need for efficient processes. In Brazil, most oil operations are owned by a single company, which has a public trade structure. The company requires a large number of suppliers, including suppliers of raw materials, equipment and services. In fact, the company needs to employ experts to assist in the supplier selection process in order to be able to choose the best available alternatives. Therefore, supplier selection has been seen to have a significant impact on the success or otherwise of the company´s ventures.Objectives: This article proposes a group decision multi-criteria model for selecting suppliers for a Brazilian oil company.Method: It is proposed to use the PROMETHEE II method to obtain decision-makers' individual evaluations and the voting procedure by quartiles so as to convert the individual positions into a position for the group.Results: An application of the model is performed to demonstrate the feasibility of the model in addressing supplier selection problems in a context with multiple stakeholders. Combining the results from the individual analysis of the PROMETHEE II method with the voting by quartiles procedure allowed individual preferences to be aggregated into a result that was representative of the group and produced a ranking of suppliers for one of the type of services used by the company.
Conclusion:The results were very satisfactory, demonstrating that it is possible to apply the model to a context featuring additional decision-makers and alternatives.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.