文章基本信息

标题：Medidas de eficiência e retorno de Investimento: um estudo nas distribuidoras de energia elétrica brasileiras com base em Data Envelopment Analysis, Índice de Malmquist e ROI
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作者：Valter Saurin ; Ana Lúcia Miranda Lopes ; Newton Carneiro A. Costa Júnior 等
期刊名称：Revista de Administração da UFSM
印刷版ISSN：1983-4659
出版年度：2013
卷号：6
期号：1
页码：25-38
DOI：10.5902/198346597845
语种：Portuguese
出版社：Universidade Federal de Santa Maria
摘要：DOI: 10.5902/198346597845 This paper aims to determine, in a group of companies from the Brazilian electric sector, if there is a relationship between the return on investment (ROI) and the concept of efficiency estimated by the method Data Envelopment Analysis (DEA), as well as evaluating the growth of productivity based on Malmquist Index (Fare et al, 1996). The hypothesis is that firms that had return on investment higher during certain period of time are those employed their resources efficiently in getting their outputs (DEA efficient). The input (1) Products (5) DEA model correspond to the operating cost (I), the network length (km), the number of consumers and the market billed high, medium and low voltage, respectively. The sample consisted of 31 companies of Brazilian electricity distribution and timing of the study was from 2007 to 2009. We calculated the Malmquist index (M0), represented by the change in total factor productivity (TFPC), which is composed by the evolution of technical efficiency (EC) and the change in the technological frontier (TC) of the companies were also determined ROI for each period. We calculated the correlation between the TFPC, TC, EC, score the DEA and the ROI for the period 2007 to 2009. The results showed a positive correlation, although weak, between efficiency change and the indexes mentioned above, rejecting the initial hypothesis
其他摘要：DOI: 10.5902/198346597845 This paper aims to determine, in a group of companies from the Brazilian electric sector, if there is a relationship between the return on investment (ROI) and the concept of efficiency estimated by the method Data Envelopment Analysis (DEA), as well as evaluating the growth of productivity based on Malmquist Index (Fare et al, 1996). The hypothesis is that firms that had return on investment higher during certain period of time are those employed their resources efficiently in getting their outputs (DEA efficient). The input (1) Products (5) DEA model correspond to the operating cost (I), the network length (km), the number of consumers and the market billed high, medium and low voltage, respectively. The sample consisted of 31 companies of Brazilian electricity distribution and timing of the study was from 2007 to 2009. We calculated the Malmquist index (M0), represented by the change in total factor productivity (TFPC), which is composed by the evolution of technical efficiency (EC) and the change in the technological frontier (TC) of the companies were also determined ROI for each period. We calculated the correlation between the TFPC, TC, EC, score the DEA and the ROI for the period 2007 to 2009. The results showed a positive correlation, although weak, between efficiency change and the indexes mentioned above, rejecting the initial hypothesis
关键词：Administração