Browsing Department of Mathematics by Title
Now showing items 2140 of 299

Boundaryvalue problems and shoaling analysis for the BBM equation
(The University of Bergen, 20120220)In this thesis we study the BBM equation u_t+u_x+ \frac{3}{2}uu_x  \frac{1}{6} u_{xxt}= 0 which describes approximately the twodimensional propagation of surface waves in a uniform horizontal channel containing an ...Master thesis 
Bridging the ensemble Kalman filter and particle filters: the adaptive Gaussian mixture filter
(Springer, 2010)The nonlinear filtering problem occurs in many scientific areas. Sequential Monte Carlo solutions with the correct asymptotic behavior such as particle filters exist, but they are computationally too expensive when working ...Peer reviewedJournal article 
Brill–Noether theory of squarefree modules supported on a graph
(Elsevier, 201305)We investigate the analogy between squarefree Cohen Macaulay modules supported on a graph and line bundles on a curve. We prove a Riemann–Roch theorem, we study the Jacobian and gonality of a graph, and we prove ...Journal articlePeer reviewed 
Bruk av multivariate metoder til å analysere vekst hos individmerket atlantisk laks med hensyn på lysregime, kjønn og modning
(The University of Bergen, 2005)Master thesis 
Brøkforståing hjå elevar som startar i den vidaregåande skulen
(The University of Bergen, 20150430)Målet for denne oppgåva har vore å få større innsikt i kva brøkforståing elevar som startar i den vidaregåande skulen kan ha. To forskingsspørsmål har lagt til grunn for arbeidet mitt: 1.Kva forståing av og dugleikar ...Master thesis 
Capturing the coupled hydromechanical processes occurring during CO2 injection – example from In Salah
(Elsevier, 2014)At In Salah, CO2 is removed from the production stream of several natural gas fields and reinjected into a deep and relatively thin saline formation, in three different locations. The observed deformation on the surface ...Journal article 
Cellcentered finite volume discretizations for deformable porous media
(Wiley, 20140811)The development of cellcentered finite volume discretizations for deformation is motivated by the desire for a compatible approach with the discretization of fluid flow in deformable porous media. We express the conservation ...Journal article 
Chain Ladder Metoden og Mack's Modell sammenlignet med andre Poissonbaserte modeller
(The University of Bergen, 20100530)Ønsker å se på reservering til fremtidige krav. Vil først og fremst se på Chain Ladder metoden og Mack sin modell. Vil så forsøke å simulere data etter en modell som passer med Mack sine tre antakelser, den sammensatte ...Master thesis 
Classical and Stochastic Slit Löwner Evolution
(The University of Bergen, 20141010)Doctoral thesis 
Co2 trapping in sloping aquafiers: High resolution numerical simulations
(CIMNE, 2010)Conference object 
A Comparison of Anthropometric Measures for Assessing the Association between Body Size and Risk of Chronic Low Back Pain: TheHUNT Study
(PLOS, 20151027)Background: Previous work indicates that overweight and obese individuals carry an increased risk of experiencing chronic low back pain (LBP). It is not known, however, how the association with body size depends on the ...Journal article 
Comparison of distance measures in Multimodal registration of medical images
(The University of Bergen, 20110614)In this thesis I have worked with medical image registration, in particular registration of multimodal images. I have tested the image registration software package FAIR developed by Jan Modersitzki, with particular focus ...Master thesis 
Compositional reservoir simulation with emphasis on the IMPSAT formulation
(The University of Bergen, 20060407)Doctoral thesis 
Computeraided proofs and algorithms in analysis
(The University of Bergen, 20130614)The computational power has increased dramatically since the appearance of the first computers, making them a vital tool in the analysis of dynamical systems. We present further applications of those two basic ideas, ...Doctoral thesis 
A Continuous MaxFlow Approach to Minimal Partitions with Label Cost Prior
(The authors, 2011)This paper investigates a convex relaxation approach for minimum description length (MDL) based image partitioning or labeling, which proposes an energy functional regularized by the spatial smoothness prior joint with ...ChapterPeer reviewed 
Continuous MaxFlow for Image Segmentation with Shape Priors
(The University of Bergen, 20140602)In this thesis we propose a stable method for image segmentation with shape priors. The original ChanVese intensity based segmentation model with regularisation term is extended to include shape prior information. We study ...Master thesis 
Continuous Updating of a Coupled ReservoirSeismic Model Using an Ensemble Kalman Filter Technique
(The University of Bergen, 20070329)This work presents the development of a method based on the ensemble Kalman filter (EnKF) for continuous reservoir model updating with respect to the combination of production data, 3D seismic data and timelapse seismic ...Doctoral thesis 
Controllability on InfiniteDimensional Manifolds: A ChowRashevsky Theorem
(Springer, 20140429)One of the fundamental problems in control theory is that of controllability, the question of whether one can drive the system from one point to another with a given class of controls. A classical result in geometric control ...Journal article 
Convective mixing in geological carbon storage
(The University of Bergen, 20111125)The industrial era has seen an exponential growth in the atmospheric concentration of carbon dioxide (CO2), resulting mainly from the burning of fossil fuels. This can cause changes in the climate that have severe impacts ...Doctoral thesis 
Convergence of a CellCentered Finite Volume Discretization for Linear Elasticity
(SIAM, 20151119)We show convergence of a cellcentered finite volume discretization for linear elasticity. The discretization, termed the MPSA method, was recently proposed in the context of geological applications, where cellcentered ...Journal article