Now showing items 250-269 of 444

• #### Natural Convection in Layered Porous Media between Coaxial Cylinders ﻿

(The University of Bergen, 2015-05-31)
In this thesis a mathematical model is developed to describe the onset of natural convection in a two-layer porous medium located between two coaxial cylinders, motivated by natural convection processes in geothermal ...
Master thesis
• #### Negativ binomisk regresjon med modifiserte sannsynligheter for nullobservasjoner; ZINB og ZANB ﻿

(The University of Bergen, 2013-11-06)
Regresjonsmodeller av Poisson- og negativ binomisk fordeling blir ofte brukt til å utføre regresjonsanalyse på datasett innen medisin, biologi, økonomi og mange andre fagfelt. Det oppstår ofte tilfeller der andelen av ...
Master thesis
• #### New examples of curves with a one-dimensional family of pencils of minimal degree ﻿

(Springer, 2011-07-14)
We give a geometric construction of sub-linear systems on a K3 surface consisting of smooth curves C with infinitely many g1 gon(C)’s.
Peer reviewedJournal article
• #### A New Preconditioner for Iterative Phase Splitting Routines ﻿

(The University of Bergen, 2002)
This thesis proposes a new, faster, non-iterative phase split estimate for multi component mixtures, and compares it with the previously published method of Wang and Stenby, in terms of their suitability as possible ...
Master thesis
• #### Nivådeling i matematikk på ungdomsskolen - en kvalitativ undersøkelse ﻿

(The University of Bergen, 2012-05-30)
I Kunnskapløftet, K06, legges det stor vekt på tilpasset opplæring til hver enkelt elev. Flere ungdomsskoler har innført nivådeling i matematikk som et tiltak for å imøtekomme dette kravet. I Norge står enhetsskoletanken ...
Master thesis
• #### Noen metoder for analyse av alder-periode-kohort-modeller ﻿

(The University of Bergen, 2008)
Master thesis
• #### Noen sammenhenger mellom grafer, matroider, lineære koder og trelliser ﻿

(The University of Bergen, 2008)
Master thesis
• #### Non-commutative Harmonic Analysis: Generalization of Phase Correlation to the Euclidean Motion Group ﻿

(The University of Bergen, 2010-06-10)
This thesis is about noncommutative harmonic analysis, and generalization of phase correlation to the euclidean motion group and application in image processing.
Master thesis
• #### Non-Slit Solutions to the Loewner Equation ﻿

(The University of Bergen, 2010-04-30)
We study conditions on the driving term of the Loewner equation which guarantee that the equation generates slits. We construct a new family of examples of non-slit solutions which generalize Kufarev's example, in which ...
Master thesis
• #### Non-standard shocks in the Buckley-Leverett equation ﻿

(Elsevier, 2015-08)
It is shown how delta shock waves which consist of Dirac delta distributions and classical shocks can be used to construct non-monotone solutions of the Buckley–Leverett equation. These solutions are interpreted using a ...
Journal article
• #### Nonholonomic geometry on finite and infinite dimensional Lie groups and rolling manifolds ﻿

(The University of Bergen, 2012-03-30)
Part I: We start by giving some background on the topics discussed in this thesis. The main topic of the thesis is nonholonomic geometry. In Chapter 1 we give an introduction of nonholonomic geometry in the context of ...
Doctoral thesis
• #### Nonhydrostatic pressure in ocean models with focus on wind driven internal waves ﻿

(The University of Bergen, 2010-02-05)
Doctoral thesis
• #### Nonlinear cross-spectrum analysis via the local Gaussian correlation ﻿

(2017)
Spectrum analysis can detect frequency related structures in a time series $\{Y_t\}_{t\in\mathbb{Z}}$, but may in general be an inadequate tool if asymmetries or other nonlinear phenomena are present. This limitation is a ...
Journal article
• #### Nonlinear spectral analysis via the local Gaussian correlation ﻿

(2017)
The spectral distribution $f(\omega)$ of a stationary time series $\{Y_t\}_{t\in\mathbb{Z}}$ can be used to investigate whether or not periodic structures are present in $\{Y_t\}_{t\in\mathbb{Z}}$, but $f(\omega)$ has some ...
Journal article
• #### Nonlinear Spectrum Analysis based on the Local Gaussian Correlation and Model Selection for Copulas ﻿

(The University of Bergen, 2017-11-20)
Doctoral thesis
• #### The Norwegian Stock Market: - A Local Gaussian Perspective ﻿

(The University of Bergen, 2013-06-03)
In this thesis, using daily returns from 18 stocks, oil price, exchange rates and the main index of the Oslo Stock Exchange over a period of 5 years, we investigate how the Local Gaussian Correlation can be used to ...
Master thesis
• #### A numerical approach to ruin probability in finite time for fitted models with investment ﻿

(The author, 2012)
In this paper we present a numerical method for solving a partial integro-differential equation (PIDE) associated with ruin probability, when the surplus is continuously invested in stochastic assets. The method ...
• #### Numerical bifurcation for the capillary Whitham equation ﻿

(Elsevier, 2017-03)
The so-called Whitham equation arises in the modeling of free surface water waves, and combines a generic nonlinear quadratic term with the exact linear dispersion relation for gravity waves on the free surface of a fluid ...
Journal article
• #### Numerical computation of a finite amplitude sound beam ﻿

(Department of Mathematics, University of Bergen, 1986)
Working paper
• #### Numerical Methods for Conservation Laws with a Discontinuous Flux Function ﻿

(The University of Bergen, 2011-06-01)
When simulating two-phase flow in a porous medium, numerical methods are used to solve the equations of flow, called conservation laws. In the industry, this is done by a reservoir simulator, and the most widely used method ...
Master thesis