This article evaluates the technical efficiency in Brazilian telecommunications after privatization by comparing the relative efficiency scores for July 1998 and December 1999, obtained by means of Data Envelopment Analysis methodology. The main result indicated that no differential levels of efficiency could be detected across the two periods. Moreover there was evidence of a decreasing returns to scale pattern in 1999.
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O trabalho investigou aspectos da dinâmica da indústria de transformação no período 1995-1997 em termos de variáveis relativas a tamanho médio de planta, taxas de entrada e de saída e turbulência. Os resultados no nível de 4 dígitos evidenciaram um elevado grau de heterogeneidade de comportamento entre os diferentes setores. A tentativa de identificação de padrões baseou-se na Análise Discriminante com pré-classificações definidas a partir de Análise de Grupamento em setores a 2 dígitos e categorias de uso dos bens. Os resultados não foram suficientemente fortes no sentido de evidenciarem padrões setoriais definidos e, portanto, são consistentes com outros estudos desenvolvidos para os Estados Unidos. The article investigated aspects of the manufacturing industrial dynamics in the period 1995-97 in terms of variables related to average plant size, entry and exit rates and turbulence. The results at the 4 digits level indicated a high degree of behavior heterogeneity across the different sectors. The attempt to identify patterns was based in Discriminant Analysis with pre-classifications defined upon Cluster Analysis in 2 digits sectors and users group. The results were not sufficiently strong in the sense of indicating salient sectoral patterns and therefore are consistent with other studies developed for the United States
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