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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
05/03/2009 |
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Data da última atualização: |
28/09/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
BATISTA, A. R. F.; MORAES, J. G. L.; BRITO, E. S. de. |
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Afiliação: |
Amanda Rayssa F. Batista, estudante UFC; João Gutemberg L. Moraes, estagiário CNPAT; Edy Sousa de Brito, CNPAT. |
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Título: |
Avaliação de cera de carnaúba em diferentes acessos do gênero Copernicia. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AGROINDÚSTRIA TROPICAL, 6., 2008, Fortaleza. Resumos... Fortaleza: Embrapa Agroindústria Tropical, 2008. |
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Idioma: |
Português |
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Palavras-Chave: |
Cera de carnaúba; Gênero Copernicia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00579naa a2200157 a 4500
001 1427212
005 2011-09-28
008 2008 bl uuuu u00u1 u #d
100 1 $aBATISTA, A. R. F.
245 $aAvaliação de cera de carnaúba em diferentes acessos do gênero Copernicia.
260 $c2008
653 $aCera de carnaúba
653 $aGênero Copernicia
700 1 $aMORAES, J. G. L.
700 1 $aBRITO, E. S. de
773 $tIn: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AGROINDÚSTRIA TROPICAL, 6., 2008, Fortaleza. Resumos... Fortaleza: Embrapa Agroindústria Tropical, 2008.
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Registro original: |
Embrapa Agroindústria Tropical (CNPAT) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
21/03/2012 |
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Data da última atualização: |
03/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CARVALHO JUNIOR, W. de; CHAGAS, C. da S.; FERNANDES FILHO, E. I.; VIEIRA, C. A. O.; SCHAEFER, C. E. G.; BHERING, S. B.; FRANCELINO, M. R. |
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Afiliação: |
WALDIR DE CARVALHO JUNIOR, CNPS; CESAR DA SILVA CHAGAS, CNPS; Elpídio Inácio Fernades Filho; Carlos Antônio Oliveira Vieira; Carlos Ernesto Gonçalves Schaefer; SILVIO BARGE BHERING, CNPS; Marcio Rocha Francelino. |
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Título: |
Digital soilscape mapping of tropical hillslope areas by neural networks. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 68, n. 6, p. 691-696, Nov./Dec. 2011. |
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DOI: |
https://doi.org/10.1590/S0103-90162011000600014 |
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Idioma: |
Inglês |
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Conteúdo: |
Geomorphometric variables are applied in digital soil mapping because of their strong correlation with the disposition and distribution of pedological components of the landscapes. In this research, the relationship between environmental components of tropical hillslope areas in the Rio de Janeiro State, Brazil, artificial neural networks (ANN), and maximum likelihood algorithm (MaxLike) were evaluated with the aid of geoprocessing techniques. ANN and MaxLike were applied to soilscape mapping and the results were compared to the original map. The ANN architectures with seven and five neurons in the hidden layer produced the best classifications when using samples obtained systematically. When random samples were applied, the best neural net architectures were within 22 and 16 neurons in the hidden layer. In conclusion, the ANN can contribute to soilscape surveys, making map delineation faster and less expensive. The digital elevation model (DEM) and its derived attributes can contribute to the understanding of the soil-landscape relationship of tropical hillslope areas; the use of artificial neural networks and MaxLike is feasible for digital soilscape mapping. The systematic sampling method provided a global accuracy of 70 % and 65.9 % for the ANN and the MaxLike, respectively. When the random sampling method was applied, the ANN had a global accuracy of 69.6 %, and the MaxLike had an accuracy of 62.1 %, considering the total study area in relation to the reference map. |
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Palavras-Chave: |
Atributos geomorfométricos; Mapeamento digital do solo; Modelo digital de elevação. |
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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/63946/1/v68n6a14.pdf
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Marc: |
LEADER 02301naa a2200241 a 4500
001 1919783
005 2021-11-03
008 2011 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0103-90162011000600014$2DOI
100 1 $aCARVALHO JUNIOR, W. de
245 $aDigital soilscape mapping of tropical hillslope areas by neural networks.$h[electronic resource]
260 $c2011
520 $aGeomorphometric variables are applied in digital soil mapping because of their strong correlation with the disposition and distribution of pedological components of the landscapes. In this research, the relationship between environmental components of tropical hillslope areas in the Rio de Janeiro State, Brazil, artificial neural networks (ANN), and maximum likelihood algorithm (MaxLike) were evaluated with the aid of geoprocessing techniques. ANN and MaxLike were applied to soilscape mapping and the results were compared to the original map. The ANN architectures with seven and five neurons in the hidden layer produced the best classifications when using samples obtained systematically. When random samples were applied, the best neural net architectures were within 22 and 16 neurons in the hidden layer. In conclusion, the ANN can contribute to soilscape surveys, making map delineation faster and less expensive. The digital elevation model (DEM) and its derived attributes can contribute to the understanding of the soil-landscape relationship of tropical hillslope areas; the use of artificial neural networks and MaxLike is feasible for digital soilscape mapping. The systematic sampling method provided a global accuracy of 70 % and 65.9 % for the ANN and the MaxLike, respectively. When the random sampling method was applied, the ANN had a global accuracy of 69.6 %, and the MaxLike had an accuracy of 62.1 %, considering the total study area in relation to the reference map.
653 $aAtributos geomorfométricos
653 $aMapeamento digital do solo
653 $aModelo digital de elevação
700 1 $aCHAGAS, C. da S.
700 1 $aFERNANDES FILHO, E. I.
700 1 $aVIEIRA, C. A. O.
700 1 $aSCHAEFER, C. E. G.
700 1 $aBHERING, S. B.
700 1 $aFRANCELINO, M. R.
773 $tScientia Agricola, Piracicaba$gv. 68, n. 6, p. 691-696, Nov./Dec. 2011.
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Embrapa Solos (CNPS) |
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