Spatial dependence
Modelling the spatial dependence of the rainfall erosivity index in the Brazilian semiarid region
... range or to unexplained variability. The relationship with average erosivity may be an indicative of the need for a greater number of meteorological stations in order to reduce this error, especially during the rainy ...
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Spatial dependence in experiments of progeny selection for bean (Phaseolus vulgaris L.) yield
... Neglecting spatial dependence between plots can prevent the statistical analysis of being an effective tool for the breeder to select really superior ...consider spatial dependence of errors ...
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Spatial DepenDence of electrical conDuctivity anD chemical propertieS of the Soil by electromagnetic inDuction
... brazilian soils have natural high chemical variability; thus, apparent electrical conductivity (eca) can assist interpretation of crop yield variations. We aimed to select soil chemical properties with the best linear ...
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A Classification for a Geostatistical Index of Spatial Dependence
... strong spatial dependence categories using data of real spatial variability because of the infinite number of different scenarios and variables around the world (and also in Brazil), and the ...
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Some aspects about the spatial dependence index for variability of soil attributes
... (Spatial Dependence Index) in general and in function of field factors such as soil types, type of attribute and soil ...(the spatial variability behavior in the horizontal direction of the ...
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Spatial dependence of magnetopause energy transfer: Cluster measurements verifying global simulations
... site. After a field line has been reconnected, it evolves across the magnetopause and is added to the tail lobes of open mag- netic flux in the nightside, where it eventually reconnects and closed flux is created. ...
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Modelling the spatial dependence of the rainfall erosivity index in the Brazilian semiarid region
... VIEIRA, S.R.; CARVALHO, J.R.P. de; PAZ GONZÁLEZ, A. Jack knifing for semivariogram validation. Bragantia, v.69, p.97- 105, 2010. Supplement. DOI: 10.1590/S0006-87052010000500011. WANG, J.; YANG, R.; BAI, Z. ...
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Spatial variability of particle size fractions of an Oxisol cultivated with conilon coffee
... The range of spatial dependence for the clay was 41.0 m and 47.0 m, in the layers 0-0.20 m and 0.20-0.40 m, respectively, showing the same pattern of spatial distribution, while the total sand ...
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SPATIAL VARIABILITY OF MAXIMUM ANNUAL DAILY RAIN UNDER DIFFERENT RETURN PERIODS AT THE RIO DE JANEIRO STATE, BRAZIL (
... correlation implies that nearer observations are more similar than the farther ones and, consequently, the use of statistical methods that consider the independence of observations are not appropriated. In this context, ...
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Bol. Ciênc. Geod. vol.23 número3
... the spatial dependence of the attribute is of great importance, but only some models (which have second-order stationarity) are considered with such ...of spatial dependence in power model ...
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REDUNDANT VARIABLES AND THE QUALITY OF MANAGEMENT ZONES
... The spatial correlation matrix was generated for the analyzed variables; in the matrix, the autocorrelation values of each variable are the elements on the main diagonal, whereas the off- diagonal elements are the ...
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Braz. J. Phys. vol.37 número1A
... 2: Spatial dependence of the nucleon scalar form factor (solid curve) and partial contributions due to N and ∆ intermediate states (dashed curve and dotted curve, respectively).. In Fig.[r] ...
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Spatial variability of available water and micro-sprinkler irrigation in cambisol
... of spatial patterns of both water application and available water capacity in the soil, as well as their interactions, is essential to maximize efficiency of water use in irrigated ...analyze spatial ...
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Variabilidade espacial de atributos químicos em Neossolo no manejo da goiabeira com nim no semiárido
... 24%). Spatial dependence was analyzed through the fit of the classic semivariogram based on the estimate of the semivariances using the program ...), spatial range (A) and sill (C 0 + ...
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Spatial dependency and correlation of properties of soil cultivated with oil palm, Elaeis guineensis, in agroforestry systems in the eastern Brazilian Amazon
... The spatial dependence of these variables was evaluated with a semivariogram analysis, adjusting three theoretical models (spherical, exponential, and ...for spatial dependence structure, ...
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Stem taper modeling and timber volume estimation
... the spatial dependence index (SDI) proposed by Seidel and Oliveira (2014) for the models: Spherical (8), Exponential (9), and Gaussian (10), where: C 0 = nugget effect, C 1 = contribution, a = range (m), ...
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A spatial econometric analysis of the calls to the portuguese national health line
... in spatial econometrics literature, in which spatial dependence is included in a way such that the value of one observation is dependent on the value of its neighbour observations (Bivand et ...
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Spatial-temporal analysis of water requirements of coffee crop in Minas Gerais State, Brazil
... Monthly and annual maps of ETc were developed for the coffee crop in the State of Minas Gerais, supporting the charac- terization of different zones in terms of water requirement. For that, geostatistic analysis was ...
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LOCAL INFLUENCE FOR SPATIAL ANALYSIS OF SOIL PHYSICAL PROPERTIES AND SOYBEAN YIELD USING STUDENT’S t-DISTRIBUTION
... the spatial dependence structure of a regionalized variable by geostatistical methods are fundamental, since these parameters, underlying the kriging of unsampled points, allow the construction of thematic ...
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Soil moisture and soil electrical conductivity
... performed spatial evaluation of soil moisture in two experimental fields in two consecutive years and modeled its influence on soil ...strong spatial dependence, but the relationship between soil ...
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