Suppliers are extremely important in business operations. The supplier ensures the supply of materials, raw materials, commodities, etc. in sufficient quantity, quality, stability, and accuracy to meet the requirements of production and business with low costs and on-time deliveries. Therefore, selecting and managing good suppliers is a prerequisite for organizing the production of quality products as desired, according to the schedule, and with reasonable prices and competitiveness in the market. It is also important to gain the support of suppliers in order to continue to improve and achieve more as a business. The evaluation and selection of a supplier is a Multi-Criteria Decision-Making (MCDM) issue, in which the decision-maker is faced with both qualitative and quantitative factors. In this research, the authors propose an MCDM model using a hybrid of Supply Chain Operations Reference metrics (SCOR metrics), the Analytic Hierarchy Process (AHP) model, and the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) approach for supplier evaluation and selection in the gas and oil industry. Using literature reviews on SCOR metrics, all criteria that impact supplier selection are defined in the first stage, the AHP model is applied to determine the weight of each factor in the second stage, and the optimal supplier is presented in final stage using the TOPSIS model. As a result, Decision-Making Unit 5 (DMU-05) is found to be the best supplier for the gas and oil industry in this research. The contribution of this work is to propose a new hybrid MCDM model for supplier selection in the gas and oil industry. This research also introduces a useful tool for supplier selection in other industries.

This study applies and builds on Davis and Rigaux's (J Consum Res 1(1): [51][52][53][54][55][56][57][58][59][60][61][62] 1974) triangle of spousal dominance styles of family purchase decisions. We explored adolescents' perceptions of parents' dominance in family decisions by investigating mother-father relative influence (MFRI) and responsibility sharing with family for 15 issues relating to vacations. The results, derived from data collected in 25 societies, demonstrate a tendency toward an autonomic style of parents' decision-making for all sub-decisions and all societies except Turkey. Overall, both decision phases and cultural regions correlated with democratization of family vacation decisions. The relationship between sex-role specialization and societal cluster differed across sub-decision clusters. Further, societal effectiveness in general, individualism and long-term orientation were positively correlated with MFRI.