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Registro Completo |
Biblioteca(s): |
Embrapa Agricultura Digital. |
Data corrente: |
30/09/1996 |
Data da última atualização: |
18/02/2011 |
Autoria: |
NASCIMENTO, M. A. |
Afiliação: |
MARIO A. NASCIMENTO, CNPTIA. |
Título: |
Indexing structures for bitemporal databases. |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
Dallas: Southern Methodist University, 1995. |
Páginas: |
29 p. |
Série: |
(Ph.D. Research Proposal). |
Idioma: |
Inglês |
Conteúdo: |
In this proposal we present some directions to attack the problem of indexing bitemporal databases, which, up to date, has not been addressed in the literature. To achieve that we do the following. We review the models for historical, rollback and bitemporal databases. For the historical and roolback models we present several indexing approaches presented in the literature. We then propose the indexing structures to be investigated towards the goal of indexing bitemporal databases. In order to evaluate such indexing structures we need to address the design of sets of data and queries accordingly. Finally, we present the deliverables of the research to be pursued and a schedule to be followed. |
Palavras-Chave: |
Bases de dados bitemporais; Bases de dados históricas; Indexação de estruturas. |
Thesaurus Nal: |
Databases. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 01215nam a2200181 a 4500 001 1003650 005 2011-02-18 008 1995 bl uuuu t 00u1 u #d 100 1 $aNASCIMENTO, M. A. 245 $aIndexing structures for bitemporal databases. 260 $aDallas: Southern Methodist University$c1995 300 $a29 p. 490 $a(Ph.D. Research Proposal). 520 $aIn this proposal we present some directions to attack the problem of indexing bitemporal databases, which, up to date, has not been addressed in the literature. To achieve that we do the following. We review the models for historical, rollback and bitemporal databases. For the historical and roolback models we present several indexing approaches presented in the literature. We then propose the indexing structures to be investigated towards the goal of indexing bitemporal databases. In order to evaluate such indexing structures we need to address the design of sets of data and queries accordingly. Finally, we present the deliverables of the research to be pursued and a schedule to be followed. 650 $aDatabases 653 $aBases de dados bitemporais 653 $aBases de dados históricas 653 $aIndexação de estruturas
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
04/07/2019 |
Data da última atualização: |
24/01/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
SILVA, A. L. da; EDVAN, R. L.; BEZERRA, L. R.; RATKE, R. F.; RODRIGUES, J. A. S.; AMORIM, D. S.; NASCIMENTO, R. R. do; ARAÚJO, M. J. de. |
Afiliação: |
Alex Lopes da Silva, Universidade Federal da Paraíba; Ricardo Loiola Edvan, Universidade Federal do Piauí; Leilson Rocha Bezerra, Universidade Federal de Campina Grande; Rafael Felippe Ratke, Universidade Federal do Mato Grosso do Sul; JOSE AVELINO SANTOS RODRIGUES, CNPMS; Diego Sousa Amorim, Universidade Federal do Ceará; Romilda Rodrigues do Nascimento, Universidade Federal de Campina Grande; Marcos Jácome de Araújo, Universidade Federal do Piauí. |
Título: |
Chemical composition and in situ degradability of silages from dualpurpose sorghum hybrids. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Semina: Ciências Agrárias, Londrina, v. 40, n. 4, p. 1565-1576, jul./ago. 2019. |
Idioma: |
Inglês |
Conteúdo: |
The objective was to determine chemical composition and in situ degradability for silages of dual-purpose sorghum hybrids. Twenty-five hybrids of double-purpose sorghum were investigated in a randomized block design with three replicates. Ammoniacal nitrogen (NH3-N), pH, chemical composition of the silage and in situ degradability were determined. Silage of the hybrids 9929012, 947216, 947030, 947254, 947072, 947252, 12F042066, 1141570 and 1141562 presented greater dry matter content, ranging from 402.9 to 470.7 g kg-1. The greatest crude protein content was presented by silages from the hybrids 9929036, 9929030, 12F042224, FEPAGRO19, FEPAGRO11, 9929026, 947030, 947072, 947252, 12F042226 and BRS Ponta Negra. The silage of hybrid 1141562 exhibited the lowest neutral detergent fiber content (588 g kg-1). The highest values of dry matter and crude protein degradability were observed in the silages of the hybrids 9929030, 947252, 947072, 12F042066 and 12F042226. The use of ensilage of the 9929030 and 12F042226 hybrids is recommended because these silages present a better chemical composition of dry matter, crude protein and neutral detergent fiber and better dry matter and crude protein degradability. |
Thesagro: |
Forragem; Proteína Bruta; Sorghum Bicolor; Valor Nutritivo. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/199161/1/Chemical-composition-2.pdf
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Marc: |
LEADER 01984naa a2200253 a 4500 001 2110364 005 2020-01-24 008 2019 bl uuuu u00u1 u #d 100 1 $aSILVA, A. L. da 245 $aChemical composition and in situ degradability of silages from dualpurpose sorghum hybrids.$h[electronic resource] 260 $c2019 520 $aThe objective was to determine chemical composition and in situ degradability for silages of dual-purpose sorghum hybrids. Twenty-five hybrids of double-purpose sorghum were investigated in a randomized block design with three replicates. Ammoniacal nitrogen (NH3-N), pH, chemical composition of the silage and in situ degradability were determined. Silage of the hybrids 9929012, 947216, 947030, 947254, 947072, 947252, 12F042066, 1141570 and 1141562 presented greater dry matter content, ranging from 402.9 to 470.7 g kg-1. The greatest crude protein content was presented by silages from the hybrids 9929036, 9929030, 12F042224, FEPAGRO19, FEPAGRO11, 9929026, 947030, 947072, 947252, 12F042226 and BRS Ponta Negra. The silage of hybrid 1141562 exhibited the lowest neutral detergent fiber content (588 g kg-1). The highest values of dry matter and crude protein degradability were observed in the silages of the hybrids 9929030, 947252, 947072, 12F042066 and 12F042226. The use of ensilage of the 9929030 and 12F042226 hybrids is recommended because these silages present a better chemical composition of dry matter, crude protein and neutral detergent fiber and better dry matter and crude protein degradability. 650 $aForragem 650 $aProteína Bruta 650 $aSorghum Bicolor 650 $aValor Nutritivo 700 1 $aEDVAN, R. L. 700 1 $aBEZERRA, L. R. 700 1 $aRATKE, R. F. 700 1 $aRODRIGUES, J. A. S. 700 1 $aAMORIM, D. S. 700 1 $aNASCIMENTO, R. R. do 700 1 $aARAÚJO, M. J. de 773 $tSemina: Ciências Agrárias, Londrina$gv. 40, n. 4, p. 1565-1576, jul./ago. 2019.
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Embrapa Milho e Sorgo (CNPMS) |
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