Results 91 to 100 of about 9,408 (217)

Cesium Concentration Spatial Distribution Modeling by Point Cumulative Semivariogram

open access: yesWater, Air, and Soil Pollution, 2008
The theoretical basis of the proposed technique is the cumulative variation of 137Cs measurements’ squared-differences between a reference and other sites. The change of the cumulative squared-differences with distance from the reference site is referred to as the point cumulative semivariogram (PCSV), which provides appropriate measure of cumulative ...
Kuelahci, Fatih   +2 more
openaire   +2 more sources

Selection of a semivariogram model in the study of spatial distribution of soil moisture

open access: yesJournal of Water and Land Development, 2017
The paper presents a selection of a semivariogram model in the study of spatial variability of soil moisture in a loess agricultural catchment. Soil moisture tests were carried out in the Moszenki village, 15 km northwest of Lublin.
Obroślak Radomir   +1 more
doaj   +1 more source

IDENTIFIKASI DATA RATA-RATA CURAH HUJAN PER-JAM DI BEBERAPA LOKASI [PDF]

open access: yes, 2013
Tujuan penelitian ini adalah untuk mengidentifikasi data curah hujan per-jam berdasarkan informasi lokasi. Identifikasi untuk mengetahui apakah data curah hujan telah memenuhi asumsi isotropik, homogen dan stasioner.
Astutik, ., Solimun, ., Widandi, .
core  

Estimating potential soil erosion for environmental services in a sugarcane growing area using multisource remote sensing data [PDF]

open access: yes, 2013
Characterization of landscapes is crucial in modelling potential soil erosion to ascertain environmental services that are provided by the main land use in the ecosystem. Remote sensing techniques have proved successful in characterization of landscapes.
Bégué, Agnès   +4 more
core  

Variabilidade espacial de propriedades físicas do solo em uma parcela experimental Spatial variability of soil physical properties on an experimental plot

open access: yesRevista Brasileira de Ciência do Solo, 2005
Experimentos de solo realizados no campo necessitam de estudos que verifiquem a variabilidade espacial do solo. O objetivo deste trabalho foi estudar a variabilidade espacial de propriedades físico-hídricas do solo em uma parcela experimental, usando ...
Celia Regina Grego, Sidney Rosa Vieira
doaj   +1 more source

Kriging with Unknown Variance Components for Regional Ionospheric Reconstruction

open access: yesSensors, 2017
Ionospheric delay effect is a critical issue that limits the accuracy of precise Global Navigation Satellite System (GNSS) positioning and navigation for single-frequency users, especially in mid- and low-latitude regions where variations in the ...
Ling Huang   +5 more
doaj   +1 more source

Spatial dependence in experiments of progeny selection for bean ( Phaseolus vulgaris L.) yield

open access: yesRevista Ceres
In field experiments, it is often assumed that errors are statistically independent, but not always this condition is met, compromising the results. An inappropriate choice of the analytical model can compromise the efficiency of breeding programs in ...
Michele Jorge da Silva   +5 more
doaj   +1 more source

Pemodelan Harga Tanah Perkotaan Menggunakan Metode Geostatistika (Daerah Studi: Kota Bandung) [PDF]

open access: yes, 2010
As one of resource factors, land plays a strategic role in urban development. Land price information is needed in urban land management. Spatial distribution of land price can be obtained through spatial modelling.
Ginting, M. (Masyitah)   +3 more
core  

BANDWIDTH SELECTION FOR SPATIAL HAC AND OTHER ROBUST COVARIANCE ESTIMATORS [PDF]

open access: yes
This research note documents estimation procedures and results for an empirical investigation of the performance of the recently developed spatial, heteroskedasticity and autocorrelation consistent (HAC) covariance estimator calibrated with different ...
Dayton M. Lambert   +2 more
core  

Using airborne lidar to discern age classes of cottonwood trees in a riparian area [PDF]

open access: yes, 2006
Airborne lidar (light detecting and ranging) is a useful tool for probing the structure of forest canopies. Such information is not readily available from other remote sensing methods and is essential for modern forest inventories.
Farid, A, Goodrich, DC, Sorooshian, S
core   +1 more source

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