Model Based Geostatistics
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. DELINEATION OF HOMOGENEOUS ZONES BASED ON GEOSTATISTICAL MODELS ROBUST TO OUTLIERS
RESUMO Diversas pesquisas utilizam medidas de condutividade elétrica aparente do solo (CEa) como indicador da variabilidade espacial de atributos físico-químicos existentes no campo de produção. Com base nestas medidas, zonas de manejo (ZM) são delineadas para aperfeiçoamento da gestão agrícola. Entretanto, estas amostras têm apresentado presença
Rev. Caatinga. Publicado em: 18/07/2019
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2. 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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3. Banco de dados geológico-geotécnicos com base em sondagens à percussão e uso de SIG: análise espacial da profundidade do lençol freático e do \ N IND.SPT\ para obras de fundação em João Pessoa - PB / Geological-geotechnical Database with SPT sounding data and GIS: spatial analysis of water table level and \ N IND.SPT\ values applied to foundation maps in João Pessoa - PB (Brazil)
Geological-geotechnical databases have been used as important assistant tools in urban and environmental management activities. However, the kind of information necessary for one to work with such tools may not always be available or easily supplied. This work concerns the generation of a Decision Support System undertaken through means of a Geographic Infor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/09/2011
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4. Avaliação de técnicas geoestatísticas no inventário de povoamentos de Tectona grandis L.f. / Evaluation of geostatistics in inventory of Tectona grandis L.f. stands
The general objective of this work was to evaluate if estimates of wood volume obtained from geostatistics techniques are more accurate than those obtained from classical statistical techniques.The study was conducted in stands of Tectona grandis L.f. with the dendometric volume trait measured in 101 plots laid along a sampling spacing with UTM coordinates,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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5. Métodos geoestatísticos de co-estimativas: aplicação aos dados do Campo Escola de Namorado / Co-estimation geostatistical methods: applications to the Namorado Oil Field data
Data used for studying petroleum reservoirs are obtained through drill core, well logs, seismic records and, as a consequence, they present different sampling scales. Multivariate geostatistics is a manner of integrating these data in order to co-estimate a poorly sampled variable based not only on its own information but also on a densely sampled variable.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2011
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6. Análise do padrão espacial da mortalidade infantil utilizando geoestatística
O estudo da mortalidade infantil por meio da estatística espacial tem sua relevância ligada à identificação de regiões de risco com necessidade de intervenção dos órgãos de saúde. Dentre as técnicas de possível utilização encontra-se a geoestatística, que é empregada em trabalhos com dados continuamente distribuídos no espaço. O presente t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/03/2010
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7. A geoprocessing approach for studying and controlling schistosomiasis in the state of Minas Gerais, Brazil
Geographical information systems (GIS) are tools that have been recently tested for improving our understanding of the spatial distribution of disease. The objective of this paper was to further develop the GIS technology to model and control schistosomiasis using environmental, social, biological and remote-sensing variables. A final regression model (R² =
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-07
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8. Krigagem com deriva externa aplicada à avaliação de recursos minerais de calcário e de minério laterítico / Kriging witch external drift applied to evaluation of mineral resources of limestone and lateritic ore
This dissertation is a work on applied geostatistics to evaluation of mineral resources. This application can be considered as the last step to such the task. The basic concepts are based on current geostatistics, with extensive use of informatics resources. The first goal of this work was to test the technique named kriging with external drift in the evalua
Publicado em: 2010
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9. Geoestatística no estudo da variabilidade espacial de atributos químicos e físicos do solo e da produtividade da pimenta-do-reino / Geostatistics in the study of the spatial variability of chemical and physical attributes of soil and productivity of the Piper nigrum L.
The culture of Piper nigrum L. is one of the most profitable crops in the north of the Espírito Santo State. In view of the actual situation of nutritional management of culture adopted in the State, allied to the cultivation in regions of low natural fertility and to the high nutritional requirement, new technologies have been aggregated to the production
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2008
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10. Variabilidad espacial del suelo y su relacion con el rendimiento de mango (Mangifera indica L.)
In a regular grid with 31 points located with GPS, samples were taken and based on geostatistics analysis the spatial variability of soil properties and their relationships with yield of a mango crop were studied. It was found that soil properties and crop yield presented a high, within-field, spatial variability. The range of the semi variance models varied
Revista Brasileira de Fruticultura. Publicado em: 2008-12
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11. Co-estimation geostatistical methods: a study of the correlation between variables at results precision / Métodos geoestatísticos de co-estimativas: estudo do efeito da correlação entre variáveis na precisão dos resultados
This master dissertation presents the results of a survey into co-estimation methods commonly used in geostatistics. These methods are ordinary cokriging, collocated cokriging and kriging with an external drift. Besides that ordinary kriging was considered just to illustrate how it does work when the primary variable is poorly sampled. As we know co-estimati
Publicado em: 2008
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12. GEOLOGICAL AND GEOMECHANICS MODELLING 3D AND STABILITY ANALYSES 2D OF THE SLOPES OF THE MORRO DA MINA MINE, CONSELHEIRO LAFAIETE, MG, BRAZIL / MODELAGEM GEOLÓGICA E GEOMECÂNICA 3D E ANÁLISES DE ESTABILIDADE 2D DOS TALUDES DA MINA DE MORRO DA MINA, CONSELHEIRO LAFAIETE, MG, BRASIL
This work presents a methodology to develop geological and geomechanic models (3D) and to carry out stability analyses (2D) of rock slopes of open pit mine, based on data of Morro da Mina mine, provided by the mining company VALE. The methodology is divided in two stages: modelling and stability analyses. For the modelling, the software Petrel 2004, which al
Publicado em: 2008