Sökning: "Variogram"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet Variogram.

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

    Master-uppsats, KTH/Matematisk statistik

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

    Sammanfattning : 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. LÄS MER

  3. 2. Evaluating spatial mapping using interpolation techniques

    Master-uppsats, Linköpings universitet/Institutionen för datavetenskap

    Författare :Allan Gholmi; [2017]
    Nyckelord :;

    Sammanfattning : 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. LÄS MER

  4. 3. The spatial distribution of birds in southern Sweden : A descriptive study of willow warbler, nightingale, blackbird, robin and grey flycatcher in Svealand and Götaland.

    Kandidat-uppsats, Uppsala universitet/Statistiska institutionen

    Författare :Lars Sjöström; [2016]
    Nyckelord :Poisson regression; Kriging; Variogram; Spatial correlation; Temporal correlation; Geostatistics; Biostatistics; Landscape Ecology;

    Sammanfattning : This is a thesis about the spatial distribution of willow warbler, nightingale, blackbird, robin and grey flycatcher in Svealand and Götaland, that is the southern third of Sweden. It explores the possibilities of using statistics to describe the distribution and variation of birds in a given region. LÄS MER

  5. 4. 3D-bootstrap - Konfidensintervall för guldfyndigheter

    Kandidat-uppsats, Institutionen för matematik och matematisk statistik

    Författare :Erik Liljas; [2014]
    Nyckelord :bootstrap; spatial block-bootstrap; 3D-boostrap; konfidensintervall; spatial statistik.;

    Sammanfattning : This paper deals with evaluating 3D-bootstrap for the mining company New Boliden in an attempt to revise their current method of calculating average gold riches in different areas. The purpose is to find one-sided 3D-bootstrap confidence bound of the average gold riches. LÄS MER

  7. 5. The significance of heterogeneity for spreading of geologically stored carbon dioxide

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Christofer Olofsson; [2011]
    Nyckelord :Storage efficiency; Heterogeneity; Variogram; iTOUGH2; ECO2N; Geological storage; CO2; Saline aquifer; Lagringseffektivitet; Heterogenitet; Variogram; iTOUGH2; ECO2N; Geologisk lagring; CO2; Saltvattenakvifär;

    Sammanfattning : The demand for large scale storage of carbon dioxide (CO2) grows stronger as incentives to reduce greenhouse gas emissions are introduced. Geological storage sites such as depleted oil and gas reservoirs, unminable coal seams and deep saline water-saturated aquifers are a few of many possible geological storage sites. LÄS MER