Browsing Department of Mathematics by Title
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Natural Convection in Layered Porous Media between Coaxial Cylinders
(Master thesis, 20150531)In this thesis a mathematical model is developed to describe the onset of natural convection in a twolayer porous medium located between two coaxial cylinders, motivated by natural convection processes in geothermal ... 
Negativ binomisk regresjon med modifiserte sannsynligheter for nullobservasjoner; ZINB og ZANB
(Master thesis, 20131106)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 ... 
New examples of curves with a onedimensional family of pencils of minimal degree
(Peer reviewed; Journal article, 20110714)We give a geometric construction of sublinear systems on a K3 surface consisting of smooth curves C with infinitely many g1 gon(C)’s. 
A new framework for assessing subjectspecific whole brain circulation and perfusion using MRIbased measurements and a multiscale continuous flow model
(Peer reviewed; Journal article, 20190625)A large variety of severe medical conditions involve alterations in microvascular circulation. Hence, measurements or simulation of circulation and perfusion has considerable clinical value and can be used for diagnostics, ... 
A New Preconditioner for Iterative Phase Splitting Routines
(Master thesis, 2002)This thesis proposes a new, faster, noniterative 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 ... 
Nivådeling i matematikk på ungdomsskolen  en kvalitativ undersøkelse
(Master thesis, 20120530)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 ... 
Noen metoder for analyse av alderperiodekohortmodeller
(Master thesis, 2008) 
Noen sammenhenger mellom grafer, matroider, lineære koder og trelliser
(Master thesis, 2008) 
Noncommutative Harmonic Analysis: Generalization of Phase Correlation to the Euclidean Motion Group
(Master thesis, 20100610)This thesis is about noncommutative harmonic analysis, and generalization of phase correlation to the euclidean motion group and application in image processing. 
NonSlit Solutions to the Loewner Equation
(Master thesis, 20100430)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 nonslit solutions which generalize Kufarev's example, in which ... 
Nonstandard shocks in the BuckleyLeverett equation
(Peer reviewed; Journal article, 201508)It is shown how delta shock waves which consist of Dirac delta distributions and classical shocks can be used to construct nonmonotone solutions of the Buckley–Leverett equation. These solutions are interpreted using a ... 
Nonholonomic geometry on finite and infinite dimensional Lie groups and rolling manifolds
(Doctoral thesis, 20120330)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 ... 
Nonhydrostatic pressure in ocean models with focus on wind driven internal waves
(Doctoral thesis, 20100205) 
Nonlinear crossspectrum analysis via the local Gaussian correlation
(Journal article, 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 ... 
Nonlinear Effects During Transient Fluid Flow in Reservoirs as Encountered in WellTest Analysis
(Department of Applied Mathematics report, Research report, 198503) 
Nonlinear equations of acoustics in inhomogeneous, thermoviscous fluids
(Department of Applied Mathematics report, Research report, 199103) 
Nonlinear propagation and interaction of collinear sound beams
(Department of Applied Mathematics report, Research report, 198910) 
Nonlinear spectral analysis via the local Gaussian correlation
(Journal article, 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 \(f(\omega)\) ... 
Nonlinear Spectrum Analysis based on the Local Gaussian Correlation and Model Selection for Copulas
(Doctoral thesis, 20171120) 
The Norwegian Stock Market:  A Local Gaussian Perspective
(Master thesis, 20130603)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 describe ...