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| Registros recuperados: 23 | |
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| Fernández, M.. |
| En este estudio se presenta el análisis de la relación entre los valores de densidad de hembras maduras y de hembras impregnadas de langostino Pleoticus muelleri (Bate, 1888) del Golfo San Jorge y las variables ambientales. Los datos analizados provienen de las campañas de investigación del INIDEP OB-03/08 y OB-01/09 realizadas en noviembre-diciembre de 2008 y en enero-febrero de 2009, respectivamente; en el área comprendida entre las latitudes 43º 20´ S y 47º 00´ S y el meridiano 64º 00´ W y la costa. Se consideraron las variables biológicas: densidad de hembras maduras y de hembras impregnadas de langostino, por rango de tallas y las variables ambientales: profundidad, temperatura y salinidad de agua de fondo así como, la diferencia de temperatura y de... |
| Tipo: Theses and Dissertations |
Palavras-chave: Females; Sexual maturity; Spawning grounds; Environmental conditions; Spatial analysis; Statistical models; Shrimp fisheries. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/5159 |
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| ALBERTINI, T. Z.; BIASE, A. G.; BARBOSA, M.; FERNANDES, P. A. P.; CASTANHEIRA, M. A.; LANNA, D. P.; NEPOMUCENO, N. H. C.; BARIONI, L. G.; MEDEIROS, S. R. de; TORRES JUNIOR, R. A. de A.; OLTJEN, J. W.; COSTA JÚNIOR, C.. |
| The current study is the first from three sequential abstracts based on BeefTrader DSS to maximize profitability of farmers and the meat industry. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Sistema de suporte à decisão; Modelo estatístico.; Gado de corte; Modelo Matemático.; Decision support systems; Beef cattle; Mathematical models; Statistical models; Feedlots. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057577 |
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| Quiroz, J.C.; Montenegro, C.; Báez, P.; Espíndola, F.. |
| Se reportan las actividades y resultados del proyecto FIP 2005-41 “Dinámica y estructura poblacional del langostino colorado III y IV Regiones”. Para abordar el estudio de la dinámica y estructura poblacional de P. monodon, se plantearon dos hipótesis. Una postula que la especie posee una estructura poblacional a lo largo de la plataforma continental, en un gradiente latitudinal, en tanto que la otra plantea que la especie tiene una estructura poblacional a través de la plataforma continental, en un gradiente longitudinal. Para someter a pruebas estas hipótesis se realizaron varios análisis estadísticos de variables fundamentales del stock, como la densidad, los tamaños corporales, las edades y componentes del stock en función de su madurez. Los... |
| Tipo: Report |
Palavras-chave: Population dynamics; Population structure; Size distribution; Spawning populations; Statistical models; Marine crustaceans; Population structure; Population dynamics; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6111. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1505 |
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| SILVA, F. C. da; SILVA, C. A.; BERGAMASCO, A. F.; RAMALHO, A. L.. |
| O uso agrícola do composto de lixo (CL) nas lavouras constitui a alternativa de maior viabilidade técnico-científica-econômica, por ser fonte considerável de nutrientes e matéria orgânica. Este estudo foi conduzido em casa de vegetação na Embrapa/Centro Nacional de Pesquisas de Solos (CNPS), e teve como objetivo avaliar o efeito de doses de CL (0,25, 50 e 100 mg ha-1) e períodos de incubação (0, 16, 32, 64 e 150 dias) sobre a disponibilidade (Mehlich-1) de Cd, Cr, Co, Ni e Pb em cinco solos (Latossolo Vermelho-Amarelo Distrófico - LVd, Argissolo Vermelho-Amarelo Distrófico - PVd, Chernossolo Haplico Órtico - MXo, Planossolo Hidromórfico Distrófico - SGd e Nitossolo Vermelho Eutroférrico - Nvef). |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Resíduo sólido urbano; Modelos estatísticos; Urban solid residue; Incubação; Solid wastes; Statistical models. |
| Ano: 2002 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/8554 |
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| Furtado,Thais Destefani Ribeiro; Muniz,Joel Augusto; Silva,Edilson Marcelino; Fernandes,Jaqueline Gonçalves. |
| Abstract Jabuticaba tree is native to the Atlantic Forest in Southern Brazil, and its fruit is widely consumed in the fresh form, but it is highly perishable, requiring conservation techniques. The aim of this study was to describe the drying kinetics of jabuticaba pulp at temperatures of 50 and 60°C, comparing the Henderson, Simple Three-Parameter Exponential, Lewis, Thompson, Fick and Wang and Sing regression models and estimating the Absolute Drying Rate (ADR) for the best model. Parameters were estimated using the SAS software. The evaluation of the quality in the adjustment and selection of models was made based on the adjusted determination coefficient, Residual Standard Deviation and Akaike Information Criterion. Models presented good adjustment to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food preservation; Moisture ratio; Nonlinear regression; Statistical models. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000100903 |
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| ZANETTI,SAMARA; PEREIRA,LAÍS F.M.; SARTORI,MARIA MÁRCIA P.; SILVA,MARCELO A.. |
| ABSTRACT The objective of this study was to determine predictor models of leaf area of cassava from linear leaf measurements. The experiment was carried out in greenhouse in the municipality of Botucatu, São Paulo state, Brazil. The stem cuttings with 5-7 nodes of the cultivar IAC 576-70 were planted in boxes filled with about 320 liters of soil, keeping soil moisture at field capacity, monitored by puncturing tensiometers. At 80 days after planting, 140 leaves were randomly collected from the top, middle third and base of cassava plants. We evaluated the length and width of the central lobe of leaves, number of lobes and leaf area. The measurements of leaf areas were correlated with the length and width of the central lobe and the number of lobes of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta Crantz; Leaf biometrics; Statistical models; Multiple regression. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401729 |
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| RESENDE, M. D. V. de; ALVES, R. S.. |
| This paper presents the state of the art of the statistical modelling as applied to plant breeding. Classes of inference, statistical models, estimation methods and model selection are emphasized in a practical way. Restricted Maximum Likelihood (REML), Hierarchical Maximum Likelihood (HIML) and Bayesian (BAYES) are highlighted. Distributions of data and effects, and dimension and structure of the models are considered for model selection and parameters estimation. Theory and practical examples referring to selection between models with different fixed effects factors are given using the Full Maximum Likelihood (FML). An analytical FML way of defining random or fixed effects is presented to avoid the subjective or conceptual usual definitions. Examples of... |
| Tipo: Artigo de periódico |
Palavras-chave: Método Estatístico; Melhoramento Genético Vegetal; Plant breeding; Statistical models. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129637 |
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| COSTA, W. G. da; BARBOSA, I. de P.; SOUZA, J. E. de; CRUZ, C. D.; NASCIMENTO, M.; OLIVEIRA, A. C. B. de. |
| Several factors such as genotype, environment, and post-harvest processing can affect the responses of important traits in the coffee production chain. Determining the influence of these factors is of great relevance, as they can be indicators of the characteristics of the coffee produced. The most efficient models choice to be applied should take into account the variety of information and the particularities of each biological material. This study was developed to evaluate statistical and machine learning models that would better discriminate environments through multi-traits of coffee genotypes and identify the main agronomic and beverage quality traits responsible for the variation of the environments. For that, 31 morpho-agronomic and post-harvest... |
| Tipo: Artigo de periódico |
Palavras-chave: Análise Estatística; Genótipo; Processamento; Pós-Colheita; Cadeia Produtiva; Café; Statistical analysis; Statistical models; Genotype-environment interaction; Postharvest systems; Coffea arabica var. arabica. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133732 |
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| CARVALHO, J. R. P. de; NAKAI, A. M.; MONTEIRO, J. E. B. de A.. |
| Neste trabalho, o modelo espaço-temporal foi usado na estimativa de dados diários de precipitação. Foram utilizados dados provenientes dos registros pluviométricos de diversas estações meteorológicas, obtidos junto ao Sistema de Monitoramento Agroecológico (Agritempo), para as regiões brasileiras. Com o objetivo de validar os valores obtidos pela aplicação do modelo espaço-temporal, fixou-se dois tempos, 1º de janeiro de 2009 e 1º de maio de 2009 para as regiões brasileiras em estudo. Para este tempo fixo usaram-se as técnicas geoestatísticas de krigagem e cokrigagem ordinária, com altitude como variável auxiliar para comparação. A aplicação do modelo espaço-temporal, no geral, foi superior em mais de 7% em relação às técnicas geoestatísticas de krigagem e... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Modelagem estatística; Krigagem ordinária; Cokrigagem ordinária; Precipitação.; Estatistica.; Statistical models. |
| Ano: 2015 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1021372 |
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| Hernández, D.R.; Carozza, C.R.. |
| The simple surplus production model introduced is called Local Surplus Production Model (LSPM) because its only assumption is that the mean surplus production remains constant during a short period of years previous to the date of assessment. Its application requires only a short series (3-4 years) of values of an abundance index proportional to the mean real abundance of the resource. The model parameters estimate is performed in a Bayesian context using the SIR (Sampling Importance Resampling Algorithm) algorithm. Simple risk criteria to assess the Maximum Biologically Acceptable Catch and the risks associated to each hypothetical catch level considered are proposed. Application of the model to the whitemouth croaker (Micropogonias furnieri) resource is... |
| Tipo: Journal Contribution |
Palavras-chave: Stock assessment; Statistical models; Risks; Coastal fisheries. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5486 |
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| Furtado,Thais Destefani Ribeiro; Muniz,Joel Augusto; Silva,Edilson Marcelino; Frühauf,Ariana Campos; Fernandes,Tales Jesus. |
| Abstract Banana is among fruits most planted in tropical countries and belongs to the fruit group most consumed in the world; however, banana needs proper conservation techniques. The aim of this study was to describe the drying kinetics of ‘Prata’ and ‘D’água’ banana cultivars at temperatures of 40 and 70°C, comparing the Henderson, STPE, Lewis, Page and Fick regression models, estimating the Absolute Drying Rate (ADR). Parameters were estimated with R and SAS Studio softwares, using for comparison and selection models of the R²aj, RSD and corrected Akaike Information Criteria. The Page and Fick models did not adjust, and the others presented good adjustment to data. The Henderson model was the most suitable to describe data of ‘Prata’ banana at both... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food preservation; Absolute Drying Rate; Estimation; Statistical models. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000500901 |
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| Souza,Felipe Amorim Caetano; Fernandes,Tales Jesus; Moura,Raquel Silva de; Meirelles,Sarah Laguna Conceição; Ribeiro,Rafaela Aparecida; Cunha,Fabiana Oliveira; Muniz,Joel Augusto. |
| ABSTRACT: The analysis of the growth and development of various species has been done using the growth curves of the specific animal based on non-linear models. The objective of the current study was to evaluate the fit of the Brody, Gompertz, Logistic and von Bertalanffy models to the cross-sectional data of the live weight of the MangalargaMarchador horses to identify the best model and make accurate predictions regarding the growth and maturity in the males and females of this breed. The study involved recording the weight of 214 horses, of which 94 were males and 120 were non-pregnant females, between 6 and 153 months of age. The parameters of the model were estimated by employing the method of least squares, using the iteratively regularized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age; Body weight; Cross-sectional method; Statistical models. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400657 |
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| Hernández, D.R.; Fernández, M.B.. |
| Environmental preferences per size range of mature and impregnated females of shrimp Pleoticus muelleri (Spence Bate, 1888) (Crustacea, Decapoda, Solenoceridae) of the San Jorge Gulf, in Spring 2008 and Summer 2009. The relation between argentine red shrimp Pleoticus muelleri (Spence Bate, 1888) mature and impregnated females density values and environmental variables was analysed. Data derived from the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) research cruises carried out between 43° S-47° S and 64° Wand the coast during November-December 2008 and January-February 2009. The biological and environmental variables considered were density of mature and impregnated females per size range and depth, bottom water temperature and... |
| Tipo: Journal Contribution |
Palavras-chave: Females; Sexual maturity; Environmental conditions; Temperature preferences; Statistical models. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5505 |
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| ALVES, R. S.; RESENDE, M. D. V. de; ROCHA, J. R. do A. S. de C.; PEIXOTO, M. A.; TEODORO, P. E.; SILVA, F. F. e; BHERING, L. L.; SANTOS, G. A. dos. |
| An accurate, efficient and informative statistical method for analyses of genotype × environment (G × E) interactions is a key requirement for progress in any breeding program. Thus, the objective of this study was to quantify individual variation in reaction norms using random regression models fitted through Legendre polynomials in eucalyptus (Eucalyptus spp.) breeding. To this end, a data set with 215 eucalyptus clones of different species and hybrids evaluated in four environments for diameter at breast height (DBH) and Pilodyn penetration (PP) was used. Variance components were estimated by restricted maximum likelihood, and genetic values were predicted by best linear unbiased prediction. The best-fitted model for DBH and PP was indicated by the... |
| Tipo: Artigo de periódico |
Palavras-chave: Método Estatístico; Melhoramento Genético Vegetal; Interação Genética; Eucalipto; Statistical models; Genotype-environment interaction; Forest trees; Plant breeding; Eucalyptus. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129653 |
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| Hansen, J.E.; Buratti, C.C.; Garciarena, A.D.. |
| Advise on Biologically Allowable Catch (BAC) for Southern Argentine anchovy (Engraulis anchoita, 41° S-48° S) during 2012. To assess the evolution since 1990 and the current status of Argentine anchovy Southern stock, an Age Structured Population Model (ASPM) was used. Modeling of catches according to a four-month period pulses allowed to predict annual yields so as to get them close to the nominal catches officially recorded. Some independent indexes of stock abundance (eight acoustic estimates of total biomass and five estimates of spawning stock biomass obtained with the Daily Egg Production Method) and the proportion of individuals per age group assessed during the same cruises were used to calibrate the fitting. No stock-recruitment function but a... |
| Tipo: Journal Contribution |
Palavras-chave: Stock assessment; Yield; Statistical models; Age composition; Clupeoid fisheries. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5508 |
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| Registros recuperados: 23 | |
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