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In order to cover this goal, four quality indexes related to the airline industry, and two economic performance. In order to cover this goal, four quality indexes related to the airline industry, and two economic performance indicators, revenues and return on investment (ROI), have been considered. Data from American airline companies from 2006 to 2013 have been used to determine if airlines’ profitability increases when service quality improves. Considering the effects on airlines’ profitability, the results confirm the positive and significant influence of service quality on the ROI of the US airline companies. A non-significant effect was found for airline revenues in relation to quality No previous research in this area has been done so these findings could encourage airline companies to invest in quality, since this policy can have a positive return on their profitability.

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El entorno competitivo y dinámico ha obligado a las empresas a buscar la excelencia operativa y la mayor eficiencia para sobrevivir, no estando las empresas cooperativas exentas de dicha búsqueda. Una de las herramientas de que dispone este tipo de organizaciones es unirse formando una central de compras que les permita acceder a menores costes como consecuencia del mayor volumen.El objetivo del presente trabajo es averiguar los factores clave para el buen funcionamiento de una central de compras cooperativa y, asimismo, realizar un análisis comparativo entre la central de compras de la Federación Argentina de Cooperativas de Consumo (en adelante, CCFACC), una incipiente central de compras cooperativa argentina, y la Coop Italia, un modelo con amplia trayectoria en el mercado, con resultados comprobados y con proyecciones de mayor crecimiento.La metodología utilizada es el estudio de caso múltiple cruzado, en donde el muestreo consiste en dos casos específicos que son escogidos por ser reveladores y ejemplos extremos. Dicho análisis presenta interés dado que, aunque cada uno de éstos se ubica en contextos y continentes diferentes, siguen compartiendo el compromiso por los valores y principios cooperativos.

Versión en español AbstractPurpose: The main purpose of the present study is to conduct a literature review of the contribution made by safety in air transport, based on the existing international academic literature in the field of the social sciences. It primarily attempts to examine and verify the relationship between safety-related concepts (co-occurrence), the link between the different authors (co-authorship) and the corresponding citations (co-citations).Design/methodology: To achieve the established objectives, a systematic literature review (SLR) has been conducted using the Scopus database between the years 1990 and 2016, identifying international academic papers related to the research topic of the present study.Findings: It has been verified, on the one hand, that safety in the air transport sector is a field of growing interest, as the number of papers has increased considerably in recent years, thus demonstrating the importance that this topic has acquired over time. On the other hand, however, it must be mentioned that the total quantity of papers related to the topic is low in terms of absolute numbers.The results of the co-occurrence analysis show that the most important aspect of safety is safety management, while the strongest link is between safety management and aircraft accidents, a fact that is foreseeable a priori.-71-Intangible Capital -http://dx.doi.org/10.3926/ic.918 Originality/value: The approach used allows a better view of the academic contribution made in relation to safety; this serves as the link among the different elements of the concept studied, and it demonstrates the growing interest in this area.