Results 11 to 20 of about 9,305 (198)

Spatial Distribution Based on Semivariogram Model

open access: yesEconomic Journal of Emerging Markets, 2011
This article aims to discuss some aspects in conducting inferential analysis of census data. In this analysis, the assumptions of normality and IID (independently and identically distribution) in the observations are no longer realistic. Hence conventional analyses which are based on these assumptions are invalid and unreliable.
Gandi Pawitan
doaj   +12 more sources

Development of basic quantity surveying learning module through 21st century learning activity [PDF]

open access: yes, 2021
Technical and Vocational Education in Malaysia (TVET) is one of the most important branches of education to produce a balanced human capital. Not only the skills in the field need to be emphasized, but the skills also need to be enhanced under the ...
Abd Hafidz, Annis Surraiyya   +1 more
core   +1 more source

Identification of Multiscale Spatial Structure of Lunar Impact Crater: A Semivariogram Approach

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Identifying the spatial structure of lunar impact craters is necessary to increase our understanding of past geologic processes on the Moon. However, detecting multiscale spatial structures of craters in images in appropriate resolutions using optimum ...
Jiao Wang, Dongping Ming, Weiming Cheng
doaj   +1 more source

Application of a semivariogram based on a deep neural network to Ordinary Kriging interpolation of elevation data.

open access: yesPLoS ONE, 2022
The Ordinary Kriging method is a common spatial interpolation algorithm in geostatistics. Because the semivariogram required for kriging interpolation greatly influences this process, optimal fitting of the semivariogram is of major significance for ...
Yang Li   +3 more
doaj   +1 more source

Precipitation trends analysis by Mann-Kendall test: a case study of Paraíba, Brazil [PDF]

open access: yesRevista Brasileira de Meteorologia, 2020
This work aimed to select semivariogram models to estimate trends in monthly precipitation in Paraiba State-Brazil using ordinary kriging. The methodology involves the application of geostatistical interpolation of precipitation records of 51 years from ...
Sílvio Fernando Alves Xavier Júnior   +4 more
doaj   +1 more source

Machine learning-based estimation and clustering of statistics within stratigraphic models as exemplified in Denmark

open access: yesGEUS Bulletin, 2023
Estimating a covariance model for kriging purposes is traditionally done using semivariogram analyses, where an empirical semivariogram is calculated, and a chosen semivariogram model, usually defined by a sill and a range, is fitted. We demonstrate that
Frederik Alexander Falk   +1 more
doaj   +1 more source

Spring Rainfall Spatial Pattern Analysis in Northwest of Iran with Spatial Statistics Methods [PDF]

open access: yesنشریه جغرافیا و برنامه‌ریزی, 2021
Introduction Rainfall is amongst the most important climatic elements with a lot of spatial and temporal changes; in contrast to the other climatic phenomena, rainfall features more notable movement complexity.
Hossein Asakereh   +2 more
doaj   +1 more source

Eksplorasi Software R Untuk Fitting Semivariogram Spherical Menggunakan Pemrograman Linear dan Uji Analisis Sensitivitas

open access: yesJurnal Matematika Integratif, 2017
Semivariogram adalah diagram setengah variansi dari observasi spasial yang berada pada suatu jarak tertentu. Model ini digunakan untuk mendeskripsikan kolerasi spasial.
Tegar Bratasena WKM   +2 more
doaj   +1 more source

Inference for variograms [PDF]

open access: yes, 2013
The empirical variogram is a standard tool in the investigation and modelling of spatial covariance. However, its properties can be difficult to identify and exploit in the context of exploring the characteristics of individual datasets.
Adrian W. Bowman   +35 more
core   +1 more source

Using udometric network data to estimate an environmental covariate [PDF]

open access: yes, 2011
Manyhydrologicalandecologicalstudiesrecognizetheimportanceofcharacterizingthetemporalandspatialvari- ability of precipitation. In this study, geostatistical methodologies were developed in order to estimate a hydro-meteorological factor by (re)building ...
Costa, Marco, Gonçalves, A. Manuela
core   +2 more sources

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