Efficiency of Brazilian public and private water utilities

Detalhes bibliográficos
Autor(a) principal: Souza, Geraldo da Silva e
Data de Publicação: 2008
Outros Autores: Faria, Ricardo Coelho de, Moreira, Tito Belchior S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UCB
Texto Completo: http://hdl.handle.net/123456789/239
https://repositorio.ucb.br:9443/jspui/handle/123456789/7498
Resumo: This paper compares cost efficiencies of Brazilian public and private companies of water supply. To measure efficiency a Cobb-Douglas stochastic cost frontier model including technical effects is estimated by maximum likelihood to a panel of Brazilian firms for the period 2002 -2004. The statistical results indicate that there is evidence that public firms are more efficient although the difference in efficiency is declining over time. Overall the system of water and sewerage supply is becoming more efficient over time.
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spelling Souza, Geraldo da Silva eFaria, Ricardo Coelho deMoreira, Tito Belchior S.2016-10-10T03:51:41Z2016-10-10T03:51:41Z2008-10SOUZA, Geraldo da Silva e; FARIA, Ricardo Coelho de; MOREIRA, Tito Belchior S.. Efficiency of Brazilian public and private water utilities. Estud. Econ., São Paulo, v. 38, n. 4, Dec. 2008 .0101-4161http://hdl.handle.net/123456789/239https://repositorio.ucb.br:9443/jspui/handle/123456789/7498This paper compares cost efficiencies of Brazilian public and private companies of water supply. To measure efficiency a Cobb-Douglas stochastic cost frontier model including technical effects is estimated by maximum likelihood to a panel of Brazilian firms for the period 2002 -2004. The statistical results indicate that there is evidence that public firms are more efficient although the difference in efficiency is declining over time. Overall the system of water and sewerage supply is becoming more efficient over time.Este artigo compara eficiências custo de empresas publicas e privadas brasileiras de oferta de água. Para mensurar a eficiência faz-se uso de um modelo de fronteira estocástica definido por meio de uma função custo na família Cobb-Douglas. A especificação da fronteira inclui efeitos técnicos. Estima-se o modelo pelo método de máxima verossimilhança para um painel de firmas brasileiras observadas no período 20022004. Os resultados estatísticos indicam evidência de que as firmas públicas são mais eficientes, embora a diferença em eficiência esteja declinando no período analisado. De um modo geral, o sistema de oferta de água e saneamento está se tornando mais eficiente ao longo do tempo.Made available in DSpace on 2016-10-10T03:51:41Z (GMT). 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dc.title.pt_BR.fl_str_mv Efficiency of Brazilian public and private water utilities
title Efficiency of Brazilian public and private water utilities
spellingShingle Efficiency of Brazilian public and private water utilities
Souza, Geraldo da Silva e
Water supply
Stochastic frontier
Cost efficiency
Panel data
Oferta de água
Fronteira estocástica
Eficiência de custo
Dados de painel
title_short Efficiency of Brazilian public and private water utilities
title_full Efficiency of Brazilian public and private water utilities
title_fullStr Efficiency of Brazilian public and private water utilities
title_full_unstemmed Efficiency of Brazilian public and private water utilities
title_sort Efficiency of Brazilian public and private water utilities
author Souza, Geraldo da Silva e
author_facet Souza, Geraldo da Silva e
Faria, Ricardo Coelho de
Moreira, Tito Belchior S.
author_role author
author2 Faria, Ricardo Coelho de
Moreira, Tito Belchior S.
author2_role author
author
dc.contributor.author.fl_str_mv Souza, Geraldo da Silva e
Faria, Ricardo Coelho de
Moreira, Tito Belchior S.
dc.subject.por.fl_str_mv Water supply
Stochastic frontier
Cost efficiency
Panel data
Oferta de água
Fronteira estocástica
Eficiência de custo
Dados de painel
topic Water supply
Stochastic frontier
Cost efficiency
Panel data
Oferta de água
Fronteira estocástica
Eficiência de custo
Dados de painel
dc.description.abstract.por.fl_txt_mv This paper compares cost efficiencies of Brazilian public and private companies of water supply. To measure efficiency a Cobb-Douglas stochastic cost frontier model including technical effects is estimated by maximum likelihood to a panel of Brazilian firms for the period 2002 -2004. The statistical results indicate that there is evidence that public firms are more efficient although the difference in efficiency is declining over time. Overall the system of water and sewerage supply is becoming more efficient over time.
Este artigo compara eficiências custo de empresas publicas e privadas brasileiras de oferta de água. Para mensurar a eficiência faz-se uso de um modelo de fronteira estocástica definido por meio de uma função custo na família Cobb-Douglas. A especificação da fronteira inclui efeitos técnicos. Estima-se o modelo pelo método de máxima verossimilhança para um painel de firmas brasileiras observadas no período 20022004. Os resultados estatísticos indicam evidência de que as firmas públicas são mais eficientes, embora a diferença em eficiência esteja declinando no período analisado. De um modo geral, o sistema de oferta de água e saneamento está se tornando mais eficiente ao longo do tempo.
dc.description.version.pt_BR.fl_txt_mv Sim
dc.description.status.pt_BR.fl_txt_mv Publicado
description This paper compares cost efficiencies of Brazilian public and private companies of water supply. To measure efficiency a Cobb-Douglas stochastic cost frontier model including technical effects is estimated by maximum likelihood to a panel of Brazilian firms for the period 2002 -2004. The statistical results indicate that there is evidence that public firms are more efficient although the difference in efficiency is declining over time. Overall the system of water and sewerage supply is becoming more efficient over time.
publishDate 2008
dc.date.issued.fl_str_mv 2008-10
dc.date.accessioned.fl_str_mv 2016-10-10T03:51:41Z
dc.date.available.fl_str_mv 2016-10-10T03:51:41Z
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dc.identifier.citation.fl_str_mv SOUZA, Geraldo da Silva e; FARIA, Ricardo Coelho de; MOREIRA, Tito Belchior S.. Efficiency of Brazilian public and private water utilities. Estud. Econ., São Paulo, v. 38, n. 4, Dec. 2008 .
dc.identifier.uri.fl_str_mv http://hdl.handle.net/123456789/239
https://repositorio.ucb.br:9443/jspui/handle/123456789/7498
dc.identifier.issn.none.fl_str_mv 0101-4161
identifier_str_mv SOUZA, Geraldo da Silva e; FARIA, Ricardo Coelho de; MOREIRA, Tito Belchior S.. Efficiency of Brazilian public and private water utilities. Estud. Econ., São Paulo, v. 38, n. 4, Dec. 2008 .
0101-4161
url http://hdl.handle.net/123456789/239
https://repositorio.ucb.br:9443/jspui/handle/123456789/7498
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