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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
01/02/2016 |
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Data da última atualização: |
01/02/2016 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SOUZA, G. da S. e; GOMES, E. G. |
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Afiliação: |
GERALDO DA SILVA E SOUZA, SGE; ELIANE GONCALVES GOMES, SGE. |
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Título: |
Conditional FDH efficiency, income dispersion and market imperfections: the case of the Brazilian agricultural sensus of 2006. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
in: SIMPÓSIO BRASILEIRO DE PESQUISA OPERACIONAL, 47., 2015, Porto de Galinhas, PE. Anais... Rio de Janeiro: Sobrapo, 2015. p. 760-769. |
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Idioma: |
Inglês |
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Conteúdo: |
In this article we assess the effect of market imperfections and income inequality on rural production efficiency. The analysis is carried out using the notion of stochastic conditional efficiency computed in terms of free disposal hull (FDH) efficiency measurements. Free disposal hull and conditional FDH are output oriented with variable returns scale. |
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Palavras-Chave: |
Conditional FDH; DEA-Data Envelopment Analysis; Fractional regression; GMM; Rural income dispersion. |
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Thesagro: |
Pesquisa agrícola. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/138213/1/SBPO2015-Souza-et-al-CondFDH.pdf
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Marc: |
LEADER 01092nam a2200193 a 4500
001 2035765
005 2016-02-01
008 2015 bl uuuu u00u1 u #d
100 1 $aSOUZA, G. da S. e
245 $aConditional FDH efficiency, income dispersion and market imperfections$bthe case of the Brazilian agricultural sensus of 2006.$h[electronic resource]
260 $ain: SIMPÓSIO BRASILEIRO DE PESQUISA OPERACIONAL, 47., 2015, Porto de Galinhas, PE. Anais... Rio de Janeiro: Sobrapo, 2015. p. 760-769.$c2015
520 $aIn this article we assess the effect of market imperfections and income inequality on rural production efficiency. The analysis is carried out using the notion of stochastic conditional efficiency computed in terms of free disposal hull (FDH) efficiency measurements. Free disposal hull and conditional FDH are output oriented with variable returns scale.
650 $aPesquisa agrícola
653 $aConditional FDH
653 $aDEA-Data Envelopment Analysis
653 $aFractional regression
653 $aGMM
653 $aRural income dispersion
700 1 $aGOMES, E. G.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
04/12/2014 |
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Data da última atualização: |
03/11/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PICCOLO, M. C.; BIELUCZYK, W.; REIS, L. C.; PEREIRA, M. G.; BALIEIRO, F. C. |
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Afiliação: |
M. C. PICCOLO, CENA-USP; W. BIELUCZYK, CENA-USP; L. C. REIS, CENA-USP; M. G. PEREIRA, UFRRJ; FABIANO DE CARVALHO BALIEIRO, CNPS. |
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Título: |
Characterization of organic matter in areas under different covers in the Savannah biome (SP) - Brazil. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 17., 2014, Ioannina. Natural organic matter: structure-dynamics innovative applications: book of abstracts. Ioannina: University of Ioannina, 2014. p. 281-282. |
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Idioma: |
Inglês |
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Conteúdo: |
The identification and quantification of labile and recalcitrant soil organic matter (SOM) forms can be used to evaluate the impacts of management on soil quality (SQ). This study characterized the SOM through chemical and granulometric fractionation in areas located in the Savannah biome. Preserved, cultivated and environmental recovering areas were evaluated. For all fractions of SOM, except for the particulate organic carbon (POC), the preserved areas showed higher levels. The SOM had a positive correlation with the cation exchange capacity and negative with bulk density of soil (p ≤ 0.01). The results showed that SOM improved the physical and chemical SQ, and crops reduced the levels of carbon (C) in SOM fractions, negatively affecting the SQ. |
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Palavras-Chave: |
Agricultura tropical; Fracionamento de carbono; Latossolos; Preservação ambiental; Qualidade do solo. |
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Thesagro: |
Agricultura; Carbono; Fracionamento; Latossolo; Preservação da natureza; Qualidade; Solo. |
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Thesaurus NAL: |
Carbon; Fractionation; Oxisols; Soil quality; Tropical agriculture. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/113027/1/IHSS-Meeting-p.-281-282.pdf
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Marc: |
LEADER 01957nam a2200361 a 4500
001 2001611
005 2021-11-03
008 2014 bl uuuu u00u1 u #d
100 1 $aPICCOLO, M. C.
245 $aCharacterization of organic matter in areas under different covers in the Savannah biome (SP) - Brazil.$h[electronic resource]
260 $aIn: MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 17., 2014, Ioannina. Natural organic matter: structure-dynamics innovative applications: book of abstracts. Ioannina: University of Ioannina, 2014. p. 281-282.$c2014
520 $aThe identification and quantification of labile and recalcitrant soil organic matter (SOM) forms can be used to evaluate the impacts of management on soil quality (SQ). This study characterized the SOM through chemical and granulometric fractionation in areas located in the Savannah biome. Preserved, cultivated and environmental recovering areas were evaluated. For all fractions of SOM, except for the particulate organic carbon (POC), the preserved areas showed higher levels. The SOM had a positive correlation with the cation exchange capacity and negative with bulk density of soil (p ≤ 0.01). The results showed that SOM improved the physical and chemical SQ, and crops reduced the levels of carbon (C) in SOM fractions, negatively affecting the SQ.
650 $aCarbon
650 $aFractionation
650 $aOxisols
650 $aSoil quality
650 $aTropical agriculture
650 $aAgricultura
650 $aCarbono
650 $aFracionamento
650 $aLatossolo
650 $aPreservação da natureza
650 $aQualidade
650 $aSolo
653 $aAgricultura tropical
653 $aFracionamento de carbono
653 $aLatossolos
653 $aPreservação ambiental
653 $aQualidade do solo
700 1 $aBIELUCZYK, W.
700 1 $aREIS, L. C.
700 1 $aPEREIRA, M. G.
700 1 $aBALIEIRO, F. C.
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Embrapa Solos (CNPS) |
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