Now showing items 345-364 of 656

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

(Master thesis, 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 ...
• #### Negativ binomisk regresjon med modifiserte sannsynligheter for nullobservasjoner; ZINB og ZANB ﻿

(Master thesis, 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 ...
• #### New examples of curves with a one-dimensional family of pencils of minimal degree ﻿

(Peer reviewed; Journal article, 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.
• #### A new framework for assessing subject-specific whole brain circulation and perfusion using MRI-based measurements and a multi-scale continuous flow model ﻿

(Peer reviewed; Journal article, 2019-06-25)
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, 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 ...
• #### Nivådeling i matematikk på ungdomsskolen - en kvalitativ undersøkelse ﻿

(Master thesis, 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 ...
• #### Noen metoder for analyse av alder-periode-kohort-modeller ﻿

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

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

(Master thesis, 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.
• #### Non-Slit Solutions to the Loewner Equation ﻿

(Master thesis, 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 ...
• #### Non-standard shocks in the Buckley-Leverett equation ﻿

(Peer reviewed; Journal article, 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 ...
• #### Nonholonomic geometry on finite and infinite dimensional Lie groups and rolling manifolds ﻿

(Doctoral thesis, 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 ...
• #### Nonhydrostatic pressure in ocean models with focus on wind driven internal waves ﻿

(Doctoral thesis, 2010-02-05)
• #### Nonlinear cross-spectrum 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 Well-Test Analysis ﻿

(Department of Applied Mathematics report, Research report, 1985-03)
• #### Nonlinear equations of acoustics in inhomogeneous, thermoviscous fluids ﻿

(Department of Applied Mathematics report, Research report, 1991-03)
• #### Nonlinear propagation and interaction of collinear sound beams ﻿

(Department of Applied Mathematics report, Research report, 1989-10)
• #### 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, 2017-11-20)
• #### The Norwegian Stock Market: - A Local Gaussian Perspective ﻿

(Master thesis, 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 describe ...