Results 111 to 120 of about 360,351 (166)
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Spatial Variability of Phosphate Adsorption Parameters
Journal of Environmental Quality, 1988AbstractReversible phosphate (designated P) adsorption for acid soils with a narrow pH range is described with the Langmuir kinetics equation. Using a combination of two experimental desorption techniques, i.e., desorption in water and desorption in the presence of an “infinite” sink for P, respectively, the adsorption maximum (Qm) and the adsorption ...
van der Zee, S.E.A.T.M. +3 more
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Spatial variability in airborne pollen concentrations
Journal of Allergy and Clinical Immunology, 1975Tests were conducted to determine the relationship between airborne pollen concentrations and distance. Simultaneous samples were taken in 171 tests with sets of eight rotoslide samplers spaced from one to 486 M. apart in straight lines. Use of all possible pairs gave 28 separation distances. Tests were conducted over a 2-year period in urban and rural
G S, Raynor, E C, Ogden, J V, Hayes
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2014
Spatial variability occurs at all scales—from micrometer scale (1–10 µm) relevant to microbial processes to continental scale (1000 km) relevant to the distribution of soil orders and climate change. The order of magnitude of the coefficient of variation (CV) of soil properties ranges from a few percent to greater than 100%.
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Spatial variability occurs at all scales—from micrometer scale (1–10 µm) relevant to microbial processes to continental scale (1000 km) relevant to the distribution of soil orders and climate change. The order of magnitude of the coefficient of variation (CV) of soil properties ranges from a few percent to greater than 100%.
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Spatial variability of pesticide adsorption parameters
Environmental Science & Technology, 1986Comparaison des mesures d'adsorption de napropamide par deux methodes differentes: en discontinu jusqu'a equilibre et en ecoulement ...
H, Elabd, W A, Jury, M M, Cliath
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MR imaging with spatially variable resolution
Journal of Magnetic Resonance Imaging, 1992AbstractIn some situations it may be advantageous to produce “locally focused” magnetic resonance images that have nonuniform spatial resolution matching the expected local rate of spatial variation in the object. Because such an image has fewer pixels than a conventional image with uniformly high resolution, it can be reconstructed from fewer signals,
Y, Cao, D N, Levin
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Some Variables Affecting Children's Spatial Conservation
Child Development, 1973DUNCAN, BARBARA, and ELIOT, JOHN. Some Variables Affecting Children's Spatial Conservation. CHILD DEVELOPMENT, 1973, 44, 828-830. This study explores the possibilities of using Kershner's spatial test with young children and seeks correlations with other tasks involving visual skills and dimensionality.
B, Duncan, J, Eliot
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Environmental Mapping Based on Spatial Variability
Journal of Environmental Quality, 2002ABSTRACTEnvironmental maps show the probable environmental states of different types of land use or development of landscape in a geographic context. Remotely sensed data are particularly efficient for environmental mapping in order to outline major environmental types.
Nelley, Kovalevskaya, Vladimir, Pavlov
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Annals of the Association of American Geographers, 1979
ABSTRACT Place-to-place variation within soil units influences the study and use of soil, but is seldom formally acknowledged in soil maps and descriptions. Research on soil variation could be improved by increased coordination of experimental designs and by application of statistical methods suitable for analysis of place-to-place variation, including
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ABSTRACT Place-to-place variation within soil units influences the study and use of soil, but is seldom formally acknowledged in soil maps and descriptions. Research on soil variation could be improved by increased coordination of experimental designs and by application of statistical methods suitable for analysis of place-to-place variation, including
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Equations Modeling Spatially Variable Stochastic Processes
The Physics of Fluids, 1967A study of turbulent diffusion has led to a stochastic process stationary in time, but spatially variable, which is defined only by local specific rates of generation of zeroth, first and second moments. An analysis, based on appropriate integrations by parts, establishes the connection between the local specific rates of generation of various moments ...
Mahony, J. J., Philip, J. R.
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Spatial variability clustering for spatially dependent functional data
Statistics and Computing, 2016zbMATH Open Web Interface contents unavailable due to conflicting licenses.
ROMANO, Elvira +2 more
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