Data Partitioning
Mostrando 1-12 de 197 artigos, teses e dissertações.
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1. Partitioning and Modeling of Biomass in Caatinga Legume Seedlings in Different Water Conditions
ABSTRACT The accumulation of dry biomass, its partitioning and the adjustment of equations were assessed for the initial growth of Piptadenia stipulacea (Benth) Ducke and Anadenanthera colubrina (Vell.) Brenan under water availability variation. The experiment was conducted in pots arranged in a completely randomized design with three replicates. Water condi
Floresta Ambient.. Publicado em: 23/09/2019
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2. Local environmental controls of Atlantic Forest tree community assembly on a coastal continental island in southeastern Brazil
ABSTRACT Tropical forests with high species diversity are commonly found in rugged montane areas. We investigated causes of local tropical forest tree community assembly on a continental island with heterogeneous terrain. We recorded tree community (absolute species abundance), topography, soil, litter and location in 40 sampling units on two opposite sides
Acta Bot. Bras.. Publicado em: 29/11/2018
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3. Evaluation of OSEB and SEBAL models for energy balance of a crop area in a humid subtropical climate
ABSTRACT This study evaluated the adequacy of the One-Source Energy Balance (OSEB) and Surface Energy Balance Algorithm for Land (SEBAL) models to estimate evapotranspiration in grain growing areas with humid subtropical climate in Rio Grande do Sul, southern Brazil. The dataset was obtained from a micrometeorological station (Eddy Covariance) and MODIS (Mod
Bragantia. Publicado em: 01/11/2018
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4. Tree Growth and Nutrient Dynamics in Pine Plantations in Southern Brazil
ABSTRACT For the development of nutrient budget models to recommend lime and fertilizers for agricultural and forestry crops, curves of plant growth and nutrient accumulation are required. Information about how nutrients are partitioned between the different plant organs is also necessary, but still scarce for pine in Brazil. This study evaluated the growth,
Rev. Bras. Ciênc. Solo. Publicado em: 04/12/2017
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5. The partitioning of food resources between two rodents in the subtropical region of southern Brazil
ABSTRACT The capybara (Hydrochoerus hydrochaeris) and nutria (Myocastor coypus) are herbivorous semi-aquatic rodents. Although these rodents occur in sympatry in southern South America, little is known about how the two species interact in relationship to food resources. In this context, the aim of this study was to analyze the food resource overlap, the fee
An. Acad. Bras. Ciênc.. Publicado em: 2017-03
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6. Use of food resources and resource partitioning among five syntopic species of Hypostomus (Teleostei: Loricariidae) in an Atlantic Forest river in southern Brazil
ABSTRACT We analyzed the diet and resource partitioning among five syntopic species of Hypostomus Lacépède, 1803 in the Corumbataí River in southeastern Brazil. The gut contents of 352 individuals were assessed and 21 food items were identified and quantified under an optical microscope. The food items found in the gut contents indicate that these suckerm
Zoologia (Curitiba). Publicado em: 15/12/2016
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7. DISCOVERING AND LABELLING OF TEMPORAL GRANULARITY PATTERNS IN ELECTRIC POWER DEMAND WITH A BRAZILIAN CASE STUDY
ABSTRACT Clustering is commonly used to group data in order to represent the behaviour of a system as accurately as possible by obtaining patterns and profiles. In this paper, clustering is applied with partitioning-clustering techniques, specifically, Partitioning around Medoids (PAM) to analyse load curves from a city of South-eastern Brazil in São Paulo
Pesqui. Oper.. Publicado em: 2016-12
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8. Chemotaxonomy of the Amazonian Unonopsis Species Based on Leaf Alkaloid Fingerprint Direct Infusion ESI-MS and Chemometric Analysis
Unonopsis (Annonaceae) is a neotropical genus constituted by nearly fifty species, with fifteen described in Brazil. In the state of Amazonas seven species are found, including U. guatterioides, which displays problems from the botanical viewpoint. Previous studies showed this genus as a promising source of aporphinoid alkaloids. In order to investigate the
J. Braz. Chem. Soc.. Publicado em: 2016-03
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9. Variabilidade e divergência genética em cruzamentos dialélicos de soja / Variability and genetic divergence in soybean diallel crosses
Estimates of genetic divergence (DG) have not been used for parental selection in breeding programs, because of the inconsistence of the results. The objective of this study was to evaluate the possibility of predicting the genetic variability (VG) of soybean populations derived from two-way crosses, using DG data from AFLP markers (Bonato et al., 2006), and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2011
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10. Abordagens heurísticas para problemas de agrupamentos / Heuristics approaches for clustering problems
The clustering problems arose from the need to group data in order to understand an object or a phenomenon still unknown. Data clustering is based on similarity between objects of a data set, where the most similar objects are in the same group. This work proposes three new heuristics approaches to clustering problems: the \textit{Variable Neighborhood Searc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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11. Genotype and environment interaction on soybean yield in Mato Grosso State, Brazil.
The objective of this work was to investigate the genotype-environment interaction in Mato Grosso State, MT. The relative importance of locations, years, sowing dates and cultivars and their interactions was analyzed from data collected in regional yield trials performed in a randomized complete block design with four replications, from 1994-1995 through 199
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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12. Genotype and environment interaction on soybean yield in Mato Grosso State, Brazil.
The objective of this work was to investigate the genotype-environment interaction in Mato Grosso State, MT. The relative importance of locations, years, sowing dates and cultivars and their interactions was analyzed from data collected in regional yield trials performed in a randomized complete block design with four replications, from 1994?1995 through 199
Pesquisa Agropecuária Brasileira. Publicado em: 2011