Results 21 to 30 of about 917,096 (229)

Assessment of Groundwater Quality Spatial Distribution and Appointment Optimize Network of Shahrkord Plain Aquifer Using Geostatistical Methods [PDF]

open access: yesپژوهش‌های آبخیزداری, 2019
As the most valuable natural resources, protection and management of groundwater is vital. One of the best ways to protect groundwater resources is monitoring groundwater quality spatial variationsand then managing the water resources exploitations and ...
Mehdi Abdollahi Mansourkhani   +3 more
doaj   +1 more source

Comparative Evaluation of Prediction Model between Inference Fuzzy System and Universal Kriging for Spatial Data

open access: yesTechnium, 2022
This paper dealt with one of the spatial interpolation methods in the geostatistics field. The purpose of this research is to get the parameters of unbiased estimators based on regionalized random variables in spatial statistics.
Ghanim Mahmood Dhaher   +1 more
semanticscholar   +1 more source

Spatio-Temporal Dynamic Fields Estimating and Modeling of Missing Points in Data Sets Using a Flexible State-Space Model

open access: yesApplied Sciences, 2021
Modelling and estimating spatio-temporal dynamic field are common challenges in much applied research. Most existing spatio-temporal interpolation methods require massive prior calculations and consistent observational data, resulting in low ...
Zhichao Shi, Xiaoguang Zhou
doaj   +1 more source

Grade control in a quartz deposit using universal fuzzy kriging

open access: yesDyna, 2013
Adaptamos el método universal de predicción por Krigeado a contextos con datos inciertos o imprecisos. Empleando la teoría de conjuntos difusos, desarrollamos un Krigeado difuso niversal que utilizamos para estimar tipos de calidades en un depósito de ...
Ángeles Saavedra González   +4 more
doaj   +5 more sources

Synthetic TEC Mapping with Ordinary and Universal Kriging [PDF]

open access: yes2007 3rd International Conference on Recent Advances in Space Technologies, 2007
Spatiotemporal variations in the ionosphere affects the HF and satellite communications and navigation systems. Total Electron Content (TEC) is an important parameter since it can be used to analyze the spatial and temporal variability of the ionosphere.
Sayin, I., Arikan, F., Arikan, O.
openaire   +3 more sources

A comparison of statistical and machine learning methods for creating national daily maps of ambient PM$_{2.5}$ concentration [PDF]

open access: yes, 2019
A typical problem in air pollution epidemiology is exposure assessment for individuals for which health data are available. Due to the sparsity of monitoring sites and the limited temporal frequency with which measurements of air pollutants ...
Berrocal, Veronica J.   +6 more
core   +2 more sources

Spatial Prediction for Real Data using Kriging Technique [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2018
This study investigates the prediction of unstable random spatial process using the Ordinary Kriging technique, based on the variogram function Y(X,Y) in finding out the predictors, and the universal multivariate technique, which has been applied by ...
Shaymaa Riyadh Thanoon Thanoon
doaj   +1 more source

Penerapan Program GSTAT-R untuk Prediksi Kadar Abu Batubara di Lokasi Tidak Tersampel dengan Metode Universal Kriging

open access: yesJurnal Matematika Integratif, 2015
Geostatistika merupakan perpaduan ilmu pertambangan, geologi, matematika, dan statistika. Data yang digunakan dalam geostatistika merupakan data spasial yakni nilai pengamatan berdasarkan lokasi.
Annisa Nur Falah   +2 more
doaj   +1 more source

Spatial analysis of Varroa destructor and the relationship with surrounding landscape types in Southern Ontario

open access: yesFrontiers in Ecology and Evolution, 2022
Elevated colony losses have continued to be an issue for Canadian beekeepers for more than a decade. Numerous studies have identified unmanaged Apis mellifera colony infestation by the Varroa destructor mite as a main cause of the problem. V.
Kurtis Edward Sobkowich   +4 more
doaj   +1 more source

Mapping the topsoil pH and humus quality of forest soils in the North Bohemian Jizerské hory Mts. region with ordinary, universal, and regression kriging: cross-validation comparison

open access: yesSoil and Water Research, 2013
North Bohemia belongs to one of the most heavily industrialized and polluted regions in Europe. The enormous acid deposition which culminated in the 1970s has largely contributed to the accelerated acidification process in the soils and consequently to ...
Radim VAŠÁT   +4 more
doaj   +1 more source

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