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AVALIAÇÃO DA EFICIÊNCIA DAS COMPANHIAS AÉREAS BRASILEIRAS UTILIZANDO UM MODELO DEA EM REDE BASEADO EM FOLGAS

Rubem, Ana Paula dos Santos; Beltrán, Plácido Moreno; Mello, João Carlos Correia Baptista Soares de;

Artigo:

Este artigo tem o objetivo de analisar o desempenho operacional de companhias aéreas brasileiras, no período de 2007 a 2010, usando um modelo de Análise Envoltória de Dados (DEA, do inglês Data Envelopment Analysis) em rede. O modelo DEA em rede define cada unidade produtiva como uma rede de estágios, proporcionando um maior entendimento sobre as causas da ineficiência, bem como a decomposição da eficiência global em pontuações individuais para cada estágio. Ao invés de basear o modelo em uma medida radial de eficiência, aplica-se uma métrica baseada em folgas, e assume-se que cada estágio opere sob retornos variáveis de escala, já que os efeitos de escala não podem ser desconsiderados. A análise resultou em nove companhias globalmente eficientes. A divisão do processo produtivo em estágios tornou mais fácil identificar as fontes de ineficiência. Por exemplo, em relação às companhias aéreas ineficientes, seis foram eficientes em pelo menos um estágio. Palavras-chave: Análise Envoltória de Dados. Eficiência. Transporte aéreo.

Artigo:

This article aims at analysing the operational performance of Brazilian airlines from 2007 to 2010, by using a three-stage network Data Envelopment Analysis (DEA) model. Network DEA models define each production unit as a network of stages, providing a greater insight into the causes of inefficiency, as well as the decomposition of the global efficiency into individual scores for each internal stage. Instead of grounding the network DEA model on a radial measure of efficiency, we apply a slacks-based measure metrics. Each stage has been assumed to exhibit variable returns-to-scale, since scale effects cannot be neglected. The analysis resulted in nine globally efficient airlines. The division of the production process in stages made it easier to identify the sources of inefficiency. For instance, regarding the inefficient airlines, six were efficient in at least one stage.

Palavras-chave: DEA - Análise Envoltória de Dados, Air transport,

Palavras-chave:

DOI: 10.5151/marine-spolm2014-126288

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Como citar:

Rubem, Ana Paula dos Santos; Beltrán, Plácido Moreno; Mello, João Carlos Correia Baptista Soares de; "AVALIAÇÃO DA EFICIÊNCIA DAS COMPANHIAS AÉREAS BRASILEIRAS UTILIZANDO UM MODELO DEA EM REDE BASEADO EM FOLGAS", p. 249-261 . In: In Anais do XVII Simpósio de Pesquisa Operacional e Logística da Marinha - SPOLM 2014 [=Blucher Engineering Proceedings, n.1, v.1]. São Paulo: Blucher, 2014.
ISSN 2358-5498, DOI 10.5151/marine-spolm2014-126288

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