| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Unidades Centrais. |
|
Data corrente: |
03/03/2010 |
|
Data da última atualização: |
12/01/2011 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SOUZA, G. da S. e; GOMES, E. G.; MAGALHÃES, M. C.; AVILA, A. F. D. |
|
Afiliação: |
GERALDO DA SILVA E SOUZA, SGE; ELIANE GONCALVES GOMES, SGE; ANTONIO FLAVIO DIAS AVILA, SGE. |
|
Título: |
Economic efficiency of Embrapa's research centers and the influence of contextual variables. |
|
Ano de publicação: |
2007 |
|
Fonte/Imprenta: |
Pesquisa Operacional, Rio de Janeiro, v. 27, n. 1, p. 15-26, jan/abr. 2007 |
|
Páginas: |
15-26 p. |
|
Idioma: |
Inglês |
|
Conteúdo: |
In this paper we measure, with a DEA BCC model, the economic efficiency of Embrapa's (Brazilian Agricultural Research Corporation) research centers. We model the DEA economic efficiency as a linear function of the contextual variables revenue generation capacity, partnership intensisty, improvement of administrative processes, cost rationalization, size and type of research centers. The model used is a of the type dynamic panel and assumes a strucutred correlation matrix intra times and unstructured inter times. In order to better disciminate the efficient units we used a heuristic efficiency score that aggregates the efficiencies in relation to the original and inverted DEA frontiers. Partnerships positive effect in the efficiency scores does not confirm the thoughts that Embrapa's performance evaluation process discourages the integration and cooperation of its research centers. From the point of view of statistical significance, the improvement of administrative processes is the most important indicator among the contextual variables. |
|
Palavras-Chave: |
Análise de envoltória de dados; Contextual variables; Data Envelopment analysis; Economic efficiency; Eficiência econômica; Variávil contextual. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/25327/1/ECONOMICEFFICIENCYOFEMBRAPASRESEARCHCENTERS.pdf
|
|
Marc: |
LEADER 01807naa a2200241 a 4500
001 1659604
005 2011-01-12
008 2007 bl uuuu u00u1 u #d
100 1 $aSOUZA, G. da S. e
245 $aEconomic efficiency of Embrapa's research centers and the influence of contextual variables.
260 $c2007
300 $a15-26 p.
520 $aIn this paper we measure, with a DEA BCC model, the economic efficiency of Embrapa's (Brazilian Agricultural Research Corporation) research centers. We model the DEA economic efficiency as a linear function of the contextual variables revenue generation capacity, partnership intensisty, improvement of administrative processes, cost rationalization, size and type of research centers. The model used is a of the type dynamic panel and assumes a strucutred correlation matrix intra times and unstructured inter times. In order to better disciminate the efficient units we used a heuristic efficiency score that aggregates the efficiencies in relation to the original and inverted DEA frontiers. Partnerships positive effect in the efficiency scores does not confirm the thoughts that Embrapa's performance evaluation process discourages the integration and cooperation of its research centers. From the point of view of statistical significance, the improvement of administrative processes is the most important indicator among the contextual variables.
653 $aAnálise de envoltória de dados
653 $aContextual variables
653 $aData Envelopment analysis
653 $aEconomic efficiency
653 $aEficiência econômica
653 $aVariávil contextual
700 1 $aGOMES, E. G.
700 1 $aMAGALHÃES, M. C.
700 1 $aAVILA, A. F. D.
773 $tPesquisa Operacional, Rio de Janeiro$gv. 27, n. 1, p. 15-26, jan/abr. 2007
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
03/05/2018 |
|
Data da última atualização: |
14/11/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
BITTAR, A. C.; ELEN DE LIMA AGUIAR-MENEZES; GUERRA, J. G. M.; ROUWS, J. R. C.; AGUIAR, L. A. de; LEITE, P. S. da S. |
|
Afiliação: |
ANA CRISTINA BITTR, UFRRJ; AGUIAR-MENEZES, E. DE L., UFRRJ; JOSE GUILHERME MARINHO GUERRA, CNPAB; JANAINA RIBEIRO COSTA ROUWS, CNPAB; LUIZ AUGUSTO DE AGUIAR, UFRRJ; PAULO SÉRGIO DA SILVA LEITE, UFRRJ. |
|
Título: |
Different levels of shade on population of grasshoppers and its oviposition preference on heliconias. |
|
Título original: |
Diferentes níveis de sombreamento na população de gafanhotos e sua preferência para oviposição em helicônias |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Ciência Rural, v. 48, n. 2, e20170371, 2018. |
|
ISSN: |
1678-4596 |
|
DOI: |
http://dx.doi.org/10.1590/0103-8478cr20170371 |
|
Idioma: |
Português |
|
Conteúdo: |
Grasshoppers of the families Acrididae and Romaleidae (Orthoptera) are among the insects that defoliate heliconias and have been gaining status as pests of commercial crops of these plants in Brazil. The objectives of the present study were to identify the grasshopper defoliating heliconias in the municipality of Santo Antônio de Pádua, RJ (Brazil), to evaluate the effect of different levels of shade on the population of this grasshopper and the production parameters of heliconias, and to determine if this grasshopper has an oviposition preference among the heliconias evaluated. The experiment was in a completely randomized block design, in subdivided plots (four levels of shade in the plot, 0%, 30%, 50% and 80%, and four species of Heliconia: H. psittacorum, H. stricta, H. wagneriana and H. psittacorum x H. spathocircinata Golden Torch in the subplot), with four replications. The grasshopper was identified as Cornops frenatum frenatum (Acrididae). An increase in shade resulted in a decrease in the number of oviposition holes from the grasshopper and the number of lateral buds. Shade did not influence the number of C. f. frenatum nymphs and adults and the number of flower stems. H. wagneriana was the most preferred species for oviposition by C. f. frenatum. Results suggested using screens to shade heliconia plants can help control C. f. frenatum populations, however, the light requirements of the heliconias should be considered to guarantee productivity. |
|
Palavras-Chave: |
Cornops frenatum frenatum; Flores tropicais; Omportamento de oviposição. |
|
Thesaurus NAL: |
Heliconiaceae; Orthoptera. |
|
Categoria do assunto: |
O Insetos e Entomologia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/176296/1/Jose-guilherme-Janaina-Diferentes-niveis-de-sombreamento-Ciencia-Rural.pdf
|
|
Marc: |
LEADER 02452naa a2200277 a 4500
001 2091140
005 2018-11-14
008 2018 bl uuuu u00u1 u #d
022 $a1678-4596
024 7 $ahttp://dx.doi.org/10.1590/0103-8478cr20170371$2DOI
100 1 $aBITTAR, A. C.
240 $aDiferentes níveis de sombreamento na população de gafanhotos e sua preferência para oviposição em helicônias
245 $aDifferent levels of shade on population of grasshoppers and its oviposition preference on heliconias.$h[electronic resource]
260 $c2018
520 $aGrasshoppers of the families Acrididae and Romaleidae (Orthoptera) are among the insects that defoliate heliconias and have been gaining status as pests of commercial crops of these plants in Brazil. The objectives of the present study were to identify the grasshopper defoliating heliconias in the municipality of Santo Antônio de Pádua, RJ (Brazil), to evaluate the effect of different levels of shade on the population of this grasshopper and the production parameters of heliconias, and to determine if this grasshopper has an oviposition preference among the heliconias evaluated. The experiment was in a completely randomized block design, in subdivided plots (four levels of shade in the plot, 0%, 30%, 50% and 80%, and four species of Heliconia: H. psittacorum, H. stricta, H. wagneriana and H. psittacorum x H. spathocircinata Golden Torch in the subplot), with four replications. The grasshopper was identified as Cornops frenatum frenatum (Acrididae). An increase in shade resulted in a decrease in the number of oviposition holes from the grasshopper and the number of lateral buds. Shade did not influence the number of C. f. frenatum nymphs and adults and the number of flower stems. H. wagneriana was the most preferred species for oviposition by C. f. frenatum. Results suggested using screens to shade heliconia plants can help control C. f. frenatum populations, however, the light requirements of the heliconias should be considered to guarantee productivity.
650 $aHeliconiaceae
650 $aOrthoptera
653 $aCornops frenatum frenatum
653 $aFlores tropicais
653 $aOmportamento de oviposição
700 1 $aELEN DE LIMA AGUIAR-MENEZES
700 1 $aGUERRA, J. G. M.
700 1 $aROUWS, J. R. C.
700 1 $aAGUIAR, L. A. de
700 1 $aLEITE, P. S. da S.
773 $tCiência Rural$gv. 48, n. 2, e20170371, 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
