Variogram
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. Zoneamento geotécnico com base em krigagem ordinária e equações multiquádricas: barragem de Itaipu / Geotechnical zoning based in ordinary kriging and multiquadric equations: Itaipu Hydroelectric Power Plant
This thesis presents a study based on the zoning of geotechnical parameters resulting from core boring, carried out in the basaltic bedrock located in the area of the Itaipu Hydroelectric Power Plant (Foz do Iguaçu - PR). These zonings were carried out based on the interpolation of the data by means of ordinary kriging and multiquadric equations. The data p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2010
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14. Spatial and temporal soil moisture behavior at a watershed of the Mantiqueira Range, Minas Gerais. / âCOMPORTAMENTO ESPACIAL E TEMPORAL DA UMIDADE DO SOLO NUMA BACIA HIDROGRÃFICA NA SERRA DA MANTIQUEIRA, MINAS GERAISâ.
The qualitative and quantitative evaluation of the use and exploration of water resources at a watershed has been relevant on environmental context. The soil moisture consists of an important hydrological variable that determine the evapotranspiration and surface runoff production. This work aimed to analyze the spatial and temporal behavior of the soil mois
Publicado em: 2008
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15. Estimação de contrastes de médias de tratamentos, de um experimento em blocos ao acaso, utilizando as análises clássica e espacial / Estimation of treatments means contrasts, in a random blocks model, using the classical and spatial analysis
Not controllable factors is common occur in experiments, they are responsible for the heterogeneity among parcels. Even executing the three experimentation basic principles in the design (repetition, randomization and local control), even so, may have correlation in errors and, therefore, spatial dependence in the area of study. If that autocorrelation struc
Publicado em: 2008
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16. Acquisition and processing of morphometric parameters derivatives from SRTM model / Aquisição e processamento de dados morfométricos derivados do modelo digital de elevação SRTM
SRTM data is distributed at horizontal resolution of 1arcsec (aprox. 30m) for areas within the USA and at 3arcsec (aprox. 90m) resolution for the rest of the world. A 90m resolution can be considered suitable for small or medium-scale analysis, but it is too coarse for more detailed purposes. One alternative is to interpolate the SRTM data at a finer resolut
Publicado em: 2007
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17. ContribuiÃÃo Ãs tÃcnicas de locaÃÃo de poÃos em terrenos de rochas cristalinas no semi-Ãrido brasileiro
Geological and geophysical studies were accomplished in the areas of Carnaubeira da Penha and Alagoinha in the semi-arid region of Pernambuco where Neo and Mesoproterozoic crystalline rocks occur. The study aimed at a better understanding of the variables upon which well yields are dependent in hard rock territories, in order to improve well site selection t
Publicado em: 2004
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18. Contribution to the tecnicas of location of wells in lands of crystalline rocks in the half-barren Brazilian / ContribuiÃÃo Ãs tecnicas de locaÃÃo de poÃos em terrenos de rochas cristalinas no semi-Ãrido brasileiro
Geological and geophysical studies were accomplished in the areas of Carnaubeira da Penha and Alagoinha in the semi-arid region of Pernambuco where Neo and Mesoproterozoic crystalline rocks occur. The study aimed at a better understanding of the variables upon which well yields are dependent in hard rock territories, in order to improve well site selection t
Publicado em: 2004
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19. O impacto do uso de ponderadores de dados agrupados na geoestatistica
This dissertation presents some techniques on calculating a weighted up set, ITom clustered data, that are associated to them. These data, when applíed to the sample set, can indicate statistical values that are closer to the true ones than the previous. This operation is called declustering. There are four described methods that intend to provide this weig
Publicado em: 2003
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20. Discriminacao de lateritas mineralizadas em ferro no deposito de N1 (Carajas-PA) por radar imageador: uma avaliacao atraves de classificacao textural / Discrimination of iron ore laterites in the deposit N1 (Crajas - PA) using radar imagery: an evaluation through textural classification
The use of imaging SAR presents a high potencial for geological applications in cloudy cover regions, such as the Brazilian Amazon, due to the side viewing geometry and the longer wavelengths, which result in the enhancement of the terrain and the all-weather sensing capability. As the macro and micro topography are normally highlighted in the Syntetic Apert
Publicado em: 1998
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21. Caracterização geologica e geoestatistica de reservatorio carbonatico da Bacia de Campos
Carbonate reservoirs have lower recovery factors than those found in turbidite fields of Campos Basin, due to the presence of heterogeneities in several scales. In the studied reservoir, the most prominent heterogeneity is related to the flow units with different petrophysicals values, which cause higbly nonuniform fluid flow patterns. Identification of the
Publicado em: 1995
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22. Analise variografica e processamento digital de imagens aplicados a area da suite intrusiva de Itu(SP)
In this paper a new algorithm of textural characterisation of images by variograms is presented which allies progress achieved by previous methods with innumerable operational facilities, such as the selection of the type of variogram to be calculated, the immediate relationship between the structure observed in the variogram and the dimension of the windows
Publicado em: 1994
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23. Caracterização de reservatorios com tecnicas de otimização combinatorial
Stochastic modeling has received increasing attention in the oil industry, being established as a ordinary tool for helping the elaboration of development plans in producing reservoirs. Combinatorial optimization techniques, such as simulated annealing, allow to produce equiprobable models of reservoir variables, reproducing a priori any characteristic that
Publicado em: 1992
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24. Distribution of cases of systemic lupus erythematosus at time of first symptom in an urban area.
OBJECTIVES--To determine the geographical distribution of cases of systemic lupus erythematosus (SLE) in a defined geographical area in the East Midlands, UK, and, in particular, to search for spatial variation in cases that may implicate the role of environmental factors in SLE aetiology. METHODS--Six methods of case ascertainment were used. The postcode of