Results 21 to 30 of about 2,881 (187)

Statistical and Geostatistical Appraisal of Spatial Variability of Aggregate Stability and Aggregate-Associated Organic Carbon Content on a Catchment Scale in a Semi-arid Region, Central Iran [PDF]

open access: yesDesert, 2012
In a semiarid region of central Iran, effects of parent materials, physiography and landscape position, land use, andmanagement practices on association of organic carbon with secondary (aggregates) particles and aggregate stability canhave important ...
H.R. Motaghian, J. Mohammadi
doaj   +1 more source

Wavelets and the Generalization of the Variogram

open access: yesMathematical Geology, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bosch, E. H., Oliver, M. A., Webster, R.
openaire   +1 more source

Texture feature extraction of coal-rock image based on variogram and local variance image

open access: yesGong-kuang zidonghua, 2018
In view of problems of low classification accuracy and algorithmic running efficiency and poor robust property of rotation texture recognition existed in local binary patterns for texture feature extraction of coal-rock, a texture feature extraction ...
HUANG Lei, GUO Chaoya
doaj   +1 more source

Checking Process Stability with the Variogram [PDF]

open access: yesQuality Engineering, 2005
Modern quality control methods are increasingly being used to monitor complex industrial processes. A key requirement for such methods is the derivation of long records.
Bisgaard, S., Kulahci, M.
openaire   +2 more sources

Use of Variogram Parameters in Analysis of Hyperspectral Imaging Data Acquired from Dual-Stressed Crop Leaves

open access: yesRemote Sensing, 2012
A detailed introduction to variogram analysis of reflectance data is provided, and variogram parameters (nugget, sill, and range values) were examined as possible indicators of abiotic (irrigation regime) and biotic (spider mite infestation) stressors ...
Christian Nansen
doaj   +1 more source

Leveraging Deep Learning for Automated Experimental Semivariogram Fitting

open access: yesAtmosphere
The variogram function is a crucial tool for quantifying spatial correlation and a key component of Kriging interpolation, directly influencing the accuracy of interpolation results.
Siyu Yu, Lifang Zhao, Shaohua Li
doaj   +1 more source

Development of a variogram procedure to identify spatial outliers using a supplemental digital elevation model

open access: yesJournal of Hydrology X, 2019
When using a ground water elevation dataset for the development of a ground water model, it is prudent to first evaluate the quality of the data before using it in a ground water model.
Zane D. Helwig   +3 more
doaj   +1 more source

Spatial distribution pattern analysis using variograms over geographic and feature space

open access: yesGeo-spatial Information Science
Variogram analysis is effective in revealing the spatial distribution patterns of geographic variable(s). Yet, existing variograms mostly focus on the impact of spatial correlation on the variable variation and neglect the impact of geographic ...
Fang-He Zhao, A-Xing Zhu, Cheng-Zhi Qin
doaj   +1 more source

Variogram estimation in the presence of trend [PDF]

open access: yesStatistics and Its Interface, 2012
Estimation of covariance function parameters of the error process in the presence of an unknown smooth trend is an important problem because solving it allows one to estimate the trend nonparametrically using a smoother corrected for dependence in the errors.
Bliznyuk, Nikolay   +3 more
openaire   +3 more sources

Critical Analysis of the Snow Survey Network According to the Spatial Variability of Snow Water Equivalent (SWE) on Eastern Mainland Canada

open access: yesHydrology, 2019
In Eastern Canada, the snow survey network is highly optimized at the operational scale. However, it is commonly accepted that the network is limited when it comes to studying the spatial variability of the snow water equivalent (SWE), which forms ...
Yawu Noumonvi Sena   +3 more
doaj   +1 more source

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