Essays about: "Variograms"

Found 4 essays containing the word Variograms.

1. 1. Statistical Methods for Mineral Models of Drill Cores

   University essay from KTH/Matematisk statistik

   Author : Björn Johansson; [2020]
   Keywords : Ordinary Kriging; Variograms; Geostatistics; Statistical Methods; Ordinary Kriging; Variogram; Geostatistik; Statistiska Metoder;

   Abstract : In modern mining industry, new resource efficient and climate resilient methods have been gaining traction. Commissioned efforts to improve the efficiency of European mining is further helping us to such goals. Orexplore AB's X-ray technology for analyzing drill cores is currently involved in two such project. READ MORE

3. 2. Evaluating spatial mapping using interpolation techniques

   University essay from Linköpings universitet/Institutionen för datavetenskap

   Author : Allan Gholmi; [2017]
   Keywords : ;

   Abstract : In this thesis, the inverse distance weighting, different kriging methods, ordinary least squares and two variants of the geographically weighted regression was used to evaluate the spatial mapping abilities on an observed dataset and a simulated dataset. The two datasets contain the same bioclimatic variable, near-surface air temperature, uniformly distributed over the whole world. READ MORE

4. 3. Evaluating habitat suitability and spectral heterogeneity models to predict weed species presence

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Christina Fotiou; [2014]
   Keywords : GARP; herbicide resistant weeds; climate change; spatial heterogeneity; habitat; regression; NDVI; Physical Geography and Ecosystem Analysis; GIS; Earth and Environmental Sciences;

   Abstract : The aim of this study is to analyze whether the presence of weed species resistant to herbicides is related to landscape heterogeneity and environmental variables. C3 and C4 weed species, such as Chenopodium album, Conyza canadensis, Amaranthus retroflexus, Papaver rhoeas, Sorghum halepense, Echinochloa crus-galli and Lolium rigidum, are studied in two differing bioclimatic countries, Greece and Germany. READ MORE

5. 4. Spatial continuity in tree diameter distribution

   University essay from SLU/Dept. of Forest Resource Management

   Author : Leakemariam Berhe; [1999]
   Keywords : Spatial continuity; Geostatistics ; Regionalized variable; Truncated distribution function; Variogram; Kriging; Cross validation;

   Abstract : Investigation for spatial continuity in tree diameter distribution is attempted. Parametric and non-parametric approaches are employed to see whether tree diameter distribution acts as regionalized variable or not. READ MORE