Browsing Department of Mathematics by Title
Now showing items 323-342 of 436
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Quality of the Analysis Step in EnKF
(The University of Bergen, 2011-06-15)In many physical applications we want to characterize the parameters of a system based on indirect observations or measurements. In a reservoir simulator setting, the goal is to simulate the production of hydrocarbons ...Master thesis -
Quantifying uncertainties when monitoring marine environments in connection with geological storage of CO2
(The University of Bergen, 2015-06-26)Doctoral thesis -
Radielle basisfunksjoner som adaptiv kollokasjonsmetode
(The University of Bergen, 2014-06-01)Hensikten med oppgaven er å undersøke en adaptiv kollokasjonsmetode basert på radielle basisfunksjoner. Målet er å finne ut om man med enkle kriterier for senter- og formparameterfordelingen kan oppnå en fordeling ...Master thesis -
Reactive Transport in Porous Media
(The University of Bergen, 2011-08-01)In this thesis, we show how the common equations for flow in porous media can be expanded to account for geochemical reactions. Furthermore, the complications arising when solving the new equations numerically are described ...Master thesis -
Reconstructing Open Surfaces via Graph-Cuts
(The authors, 2011)A novel graph-cuts-basedmethod is proposed for reconstructing open surfaces from unordered point sets. Through a boolean operation on the crust around the data set, the open surface problem is translated to a watertight ... -
Reexamining CO2 Storage Capacity and Utilization of the Utsira Formation
(EAGE, 2014)In this work we provide estimates of CO2 storage capacity of the Utsira Formation using the recently provided datasets from the Norwegian Petroleum Directorate, taking CO2 density variation into account. We also investigate ...Conference object -
Regresjonsmodeller i skipsforsikring
(The University of Bergen, 2009-09-15)Masteroppgaven tar utgangspunkt i et datasett fra skipsforsikring og undersøker hva slags modeller som passer til skadefrekvensen for dette datasettet. Hovedfokuset for masteroppgaven vil være på generalisert lineært miksede ...Master thesis -
Rekneark på ungdomstrinnet
(The University of Bergen, 2014-06-06)Problemstillinga i oppgåva var korleis opplever elevane bruk av rekneark i matematikk på ungdomstrinnet. Gjennom eitt år vart ulike reknearkoppgåver prøvd ut i 9./10. klasse. I etterkant henta eg inn data ved hjelp av ...Master thesis -
Relaxation Schemes for degenerate parabolic convection-diffusion equations with a discontinuous coeffiicient
(The University of Bergen, 2008)Master thesis -
Renal Function Estimation using Magnetic Resonance Images
(The University of Bergen, 2009-06-02)This study is aimed at testing the use of Magnetic Resonance (MR) images and mathematical models for renal parameter estimation. The study was based on four models; the Patlak model, Cortical Compartment model, Separable ...Master thesis -
Reversible Jump Markov Chain Monte Carlo: Some Theory and Applications
(The University of Bergen, 2014-03-10)The history of MCMC, theories of Bayesian thinking and model choice, the Accept- Reject-algorithm, Markov chains, the Metropolis- Hastings-algorithm and the reversible jump MCMC are explained. Then the reversible ...Master thesis -
Risk of Leakage versus Depth of Injection in Geological Storage
(Elsevier, 2009-02)One of the outstanding challenges for large-scale CCS operations is to develop reliable quantitative risk assessments with a focus on leakage of both injected CO2 and displaced brine. A critical leakage pathway is associated ...Journal article -
Robust Control Volume Methods for Reservoir Simulation on Challenging Grids
(The University of Bergen, 2010-02-19)Doctoral thesis -
Robust Discretization of Flow in Fractured Porous Media
(SIAM, 2018)Flow in fractured porous media represents a challenge for discretization methods due to the disparate scales and complex geometry. Herein we propose a new discretization, based on the mixed finite element method and mortar ...Journal article -
A robust implicit scheme for two-phase flow in porous media
(The University of Bergen, 2015-11-26)In this thesis we present a new implicit scheme for the numerical simulation of two-phase flow in porous media. Linear finite elements are considered for the spatial discretization. The scheme is based on the ...Master thesis -
A robust linearization scheme for finite volume based discretizations for simulation of two-phase flow in porous media
(Elsevier, 2015-12)In this work we consider a mathematical model for two-phase flow in porous media. The fluids are assumed immiscible and incompressible and the solid matrix non-deformable. The mathematical model for the two-phase flow is ...Journal article -
Robust Multiscale Control-volume Methods for Reservoir Simulation
(The University of Bergen, 2012-04-30)Doctoral thesis -
Robust simulation of sharp-interface models for fast estimation of CO2 trapping capacity in large-scale aquifer systems
(Springer, 2016-02)Modeling geological carbon storage represents a new and substantial challenge for the subsurface geosciences. To increase understanding and make good engineering decisions, containment processes and large-scale storage ...Journal article -
Robusthet ved skadereservering - Chain-Ladder og influens funksjoner
(The University of Bergen, 2011-06-01)I denne oppgaven har jeg sett på hvordan uteliggere kan påvirke IBNR reserven i skadereservering. Jeg har studert influens funksjoner for den klassiske Chain-Ladder metoden, og videre sett at uteliggere kan påvirke ...Master thesis -
Ruin probability and optimal dividend policy for models with investment
(The University of Bergen, 2012-11-06)In most countries the authorities impose capital requirements on insurance companies in order to avoid the adverse consequences to society when insurance companies default on claims. Since holding capital is costly, this ...Doctoral thesis
