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- Application of a decision-making tool for ranking wellness tourism destinationsPublication . Paula Lopes, Ana; Rodríguez-López, NuriaAbstract: One of the tourism industry’s segments with the strongest growth rates today is health tourism. Health tourism includes two subgroups: medical tourism (traveling outside one’s country of residence for the purpose of receiving medical care, such as surgery and health services) and wellness tourism (travel to specific locations for health promotion in a preventive way). The economic strength and sustainable growth of nations can both benefit from health tourism. This study applies a methodology to quantify the potential of Portuguese wellness tourism (thermal spas in Northern Portugal) using a multi-criteria decision making (MCDM) tool, namely the preference ranking organization method for enrichment evaluations (PROMETHEE) and geometrical analysis for interactive aid (GAIA), to achieve a robust evaluation and ranking the alternatives. Therefore, in this study, the aim is to rank ten thermal spas in Northern Portugal in terms of fifteen indicators, mostly related to digital services, containing the tourism data obtained between 2020 and 2022. The suggested approach offers trustworthy and reliable outcomes for any qualitative or quantitative criteria to assess thermal spas, which is crucial for consumers, businesses, and even governments. The results showed that PROMETHEE and GAIA can be implemented as an effective method in wellness tourism destinations evaluation.
- Selección de proveedores y toma de decisiones multicriterio en el sector alimentarioPublication . Rodríguez-López, Nuria; Lopes, Ana PaulaObjetivos: Los cambios en los hábitos de los consumidores junto con las características de los productos del sector alimentario, hacen que la gestión de la cadena de suministros en general, y la selección de proveedores en particular, adquieran especial relevancia. Sin embargo, apenas existen trabajos que profundicen en este tema. El presente estudio se centra en este aspecto analizando, desde una perspectiva matemática, la selección de proveedores en una PYME del sector agroalimentario portugués, con la finalidad de mostrar cómo el uso de técnicas multicriterio permite mejorar la toma de decisiones orientándola hacia aquellos criterios que están más en línea con la estrategia empresarial.Marco teórico: El trabajo se desarrolla a partir de la literatura sobre procesos de selección de proveedores, etapas y criterios a tener en cuenta.Metodología: Se aplica la técnica de decisión multicriterio PROMETHEE a las decisiones de selección de proveedores con la finalidad de jerarquizar proveedores y analizar la importancia de cada criterio en cada caso.Resultados/implicaciones: Los resultados muestran la coexistencia de dos conjuntos de criterios de modo que se seleccionan tanto los proveedores con mayor eficiencia económica, como los que destacan por su capacidad innovadora, pero se descuida el factor medioambiental.
- A Decision Support Tool for Supplier Evaluation and SelectionPublication . Lopes, Ana Paula; Rodríguez-López, NuriaThe supplier selection process is considered one of the most relevant decisions in supply chain management due to its effect on the product quality and on buyer performance. Supplier selection is often unstructured, and is generally based on the lowest-price proposal. However, this type of selection involves a high risk, sometimes resulting in project delays, poor quality of acquired goods, and large financial losses. Price is undoubtedly an important criterion when choosing a supplier; however, other equally important criteria must be considered. Therefore, supplier selection should be formulated as a multi-criteria decision-making (MCDM) problem. This study uses the PROMETHEE-GAIA (Preference Ranking Organization Method for Enrichment of Evaluations—Geometrical Analysis for Interactive Assistance) method to classify and select suppliers in an agrifood company. One of the advantages of this method is that it allows decision-makers to set their preferences considering all the relevant criteria simultaneously, and their relative importance. The case study demonstrates that PROMETHEE constitutes a flexible MCDM tool for supplier evaluation and selection, rank the different alternatives, and provide valuable insights. The results show that the supplier selection process has a strong point related to the existence of two groups of suppliers, one focused on economic criteria and other related to the innovative capacity. However, a flaw emerges, as little relevance is associated to the environmental criterion.
- A decision support tool for supplier evaluation and selectionPublication . Paula Lopes, Ana; Rodríguez-López, NuriaThe supplier selection process is considered one of the most relevant decisions in supply chain management due to its effect on the product quality and on buyer performance. Supplier selection is often unstructured, and is generally based on the lowest-price proposal. However, this type of selection involves a high risk, sometimes resulting in project delays, poor quality of acquired goods, and large financial losses. Price is undoubtedly an important criterion when choosing a supplier; however, other equally important criteria must be considered. Therefore, supplier selection should be formulated as a multi-criteria decision-making (MCDM) problem. This study uses the PROMETHEE-GAIA (Preference Ranking Organization Method for Enrichment of Evaluations—Geometrical Analysis for Interactive Assistance) method to classify and select suppliers in an agrifood company. One of the advantages of this method is that it allows decision-makers to set their preferences considering all the relevant criteria simultaneously, and their relative importance. The case study demonstrates that PROMETHEE constitutes a flexible MCDM tool for supplier evaluation and selection, rank the different alternatives, and provide valuable insights. The results show that the supplier selection process has a strong point related to the existence of two groups of suppliers, one focused on economic criteria and other related to the innovative capacity. However, a flaw emerges, as little relevance is associated to the environmental criterion