Geostatistics
Mostrando 25-36 de 135 artigos, teses e dissertações.
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25. SPACIAL ILLUMINANCES VARIABILITY AND ENERGY CONSUMPTION IN AVIARIES FOR LAYING HENS EQUIPED WITH COMPACT FLUORESCENT LAMPS AND LIGHT EMITTING DIODE
ABSTRACT The spatial illuminance distribution interferes in the commercial production of eggs and electric energy consumption, being considered the second major source of costs in the production chain. Therefore, in this study the objective was to evaluate the spatial distribution of the illuminance level and electric energy consumption in two commercial avi
Eng. Agríc.. Publicado em: 2016-12
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26. Spatial prediction of soil penetration resistance using functional geostatistics
ABSTRACT Knowledge of agricultural soils is a relevant factor for the sustainable development of farming activities. Studies on agricultural soils usually begin with the analysis of data obtained from sampling a finite number of sites in a particular region of interest. The variables measured at each site can be scalar (chemical properties) or functional (in
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-10
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27. Zoning of environmental conditions inside a wean-to-finish pig facility
ABSTRACT Using geostatistics, this study aimed to analyze environmental conditions for wean-to-finish swines at 3 pm, during the most sensitive phases to thermal stress (growth/ finishing and finishing). To this end, dry-bulb temperature, relative humidity, air speed, ammonia and carbon dioxide concentrations were measured at 81 equidistant points within the
Eng. Agríc.. Publicado em: 2016-10
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28. Spatial Variability of Soil Properties in Archeological Dark Earth Sites under Cacao Cultivation
ABSTRACT Soils with an A horizon formed by human activity, an anthropogenic A horizon, are found in the Amazon Region. Few studies have examined the spatial distribution of the properties of these soils. We mapped the spatial variability of some soil properties in an area of Archaeological Dark Earth (ADE) in the Brazilian Amazon. A sampling grid was defined
Rev. Bras. Ciênc. Solo. Publicado em: 15/08/2016
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29. DEPENDÊNCIA ESPAÇO-TEMPORAL DOS PARÂMETROS DE CRESCIMENTO DO PINHÃO-MANSO CULTIVADO NO SEMIÁRIDO PERNAMBUCANO
RESUMO: O pinhão-manso vem se destacando como fonte de geração de energia na região Semiárida do Brasil. O objetivo deste trabalho foi avaliar, a partir de técnicas geoestatísticas, a variabilidade espacial do diâmetro caulinar da altura de planta e do peso das sementes de pinhão-manso (Jatropha curcas L.) cultivado em condições de sequeiro no mun
Rev. Caatinga. Publicado em: 2016-06
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30. Spatial distribution of feces and estimates of nitrogen return by dairy cows on mombasa grass pastures
The objective of this study was to identify the pattern of deposition of feces by supplemented crossbred dairy cows after the lactation peak on cultivated areas under levels of intensification of the system and its effects on nitrogen cycling, with the aid of geostatistics, in the rainy period. Treatments were composed of two levels of nitrogen fertilization
R. Bras. Zootec.. Publicado em: 2013-05
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31. Sampling and spatial distribution of Sphenophorus Levis in sugar cane for site specific control / Plano de amostragem e distribuição espacial visando o controle localizado de Sphenophorus Levis na cultura da cana-de-açúcar
No Brasil o bicudo da cana-de-açúcar, (Sphenophorus levis Vaurie) tem se tornado uma praga importante da cultura, podendo causar perdas expressivas na produtividade. Percebe-se que são raros os estudos sobre a distribuição espacial desta praga no campo, e tais estudos são imprescindíveis para o desenvolvimento de planos de amostragem, visando à aplic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/10/2012
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32. Modelagem estatística de extremos espaciais com base em processos max-stable aplicados a dados meteorológicos no estado do Paraná / Statistical modelling of spatial extremes based on max-stable processes applied to environmental data in the Parana State
The most mathematical models developed for rare events are based on probabilistic models for extremes. Although the tools for statistical modeling of univariate and multivariate extremes are well-developed, the extension of these tools to model spatial extremes data is currently a very active area of research. Modeling of maximum values under the spatial dom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2012
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33. Variabilidade espacial da uniformidade da lÃmina de Ãgua aplicada por sistemas fixos de irrigaÃÃo por aspersÃo / Spatial variability of water level uniformity applied by fixed sprinkler irrigation systems
Water application uniformity is an important factor to be considered in the evaluation of sprinkler irrigation systems. The uniformity depends on the type of sprinkler and its operational conditions, the display and space among the sprinklers on the field, and also the wind speed and direction during the water applying period. This work contributes to develo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/07/2012
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34. ComparaÃÃo de trÃs mÃtodos de interpolaÃÃo na construÃÃo de mapas temÃticos / Comparison of three methods of interpolation on thematic maps Drawing
No uso da agricultura de precisÃo (AP), amostras de atributos do solo e planta sÃo coletadas e analisadas visando à obtenÃÃo de informaÃÃes que sirvam como subsÃdio para a tomada de decisÃo, a fim de se corrigirem problemas detectados nas Ãreas analisadas. Para tanto, sÃo utilizados sistemas computacionais capazes de gerar mapas temÃticos, atrav�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2012
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35. AvaliaÃÃo de edidas de influÃncia local em modelos lineares espaciais t-Student / Evaluation of local influence measure in t-student linear spacial models
The system of precision agriculture considers that agricultural areas are not homogeneous, so, fertilizers and agricultural lime must be applied at different rates, according to chemical analyzes and physical properties of soil. The use of geostatistics with precision agriculture allows establishing spatial dependence relations among the sampled points. It i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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36. Variabilidade espacial e temporal das propriedades quÃmicas do solo e das folhas, qualidade do fruto e produtividade em pomar de laranja Monte Parnaso
The plant nutritional quality influences directly in juice quality. Therefore it is important the knowledge of its spatial and temporary variation in the orchard for a better application and use of the inputs, larger yield and quality of fruit. This way, input maps can be generated for the best use, providing larger yield and better quality of fruits, reduct
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2012