Blar i Department of Mathematics på tittel
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Sexual dimorphism in the familial aggregation of tinnitus
(Journal article; Peer reviewed, 2020-11)Twin and adoption studies point towards a genetic contribution to tinnitus; however, how the genetic risk applies to different forms of tinnitus is poorly understood. Here, we perform a familial aggregation study and ... -
Ship wave patterns on floating ice sheets
(Journal article; Peer reviewed, 2022)This paper aims to explore the response of a floating icesheet to a load moving in a curved path. We investigate the effect of turning on the wave patterns and strain distribution, and explore scenarios where turning ... -
The Sibling Distribution for Multivariate Life Time Data
(Journal article; Peer reviewed, 2022)A flexible class of multivariate distributions for continuous lifetimes is proposed. The distribution is defined in terms of the age-at-death of m siblings. The expression for the joint density is derived using classical ... -
Sigma coordinate pressure gradient errors and the basin problem
(Master thesis, 2010-04-15)This work will focus on how the internal pressure gradient errors affect the numerical instability in idealised ocean basins. The nature of the errors will be investigated and discussed. First, in Chapter 1, the ocean model ... -
A simple wavelet-based test for serial correlation in panel data models
(Journal article; Peer reviewed, 2021)Hong and Kao (2004) proposed a class of general applicable wavelet-based tests for serial correlation of unknown form in the residuals from a panel regression model. The tests can be applied to both static and dynamic panel ... -
Simplified energy landscape for modularity using total variation
(Peer reviewed; Journal article, 2018)Networks capture pairwise interactions between entities and are frequently used in applications such as social networks, food networks, and protein interaction networks, to name a few. Communities, cohesive groups of nodes, ... -
Simplified models for numerical simulation of geological CO2 storage
(Doctoral thesis, 2017-02-03)Carbon capture and storage (CCS) is a proposed strategy to reduce global emissions of greenhouse-gases. The basic principle is to capture CO2 from power generation or other industrial activities and inject it into deep ... -
Simulating spatial and temporal varying CO2 signals from sources at the seafloor to help designing risk-based monitoring programs
(Peer reviewed; Journal article, 2016-01)Risk-based monitoring requires quantification of the probability of the design to detect the potentially adverse events. A component in designing the monitoring program will be to predict the varying signal caused by an ... -
Simulation of fracture slip and propagation in hydraulic stimulation of geothermal reservoirs
(Doctoral thesis, 2023-09-01)Rollen til hydraulisk stimulering i å øke produksjonen fra geotermiske reservoarer, og muliggjøre kommersiell utnyttelse av et større spekter av geotermiske ressurser, har fått økt oppmerksomhet de siste tiårene. Under ... -
Simulation of Reactive Transport in Fractured Porous Media
(Journal article; Peer reviewed, 2023)Numerical simulations of reactive transport in fractured porous media require the solution of coupled physical and chemical processes that depend on the fractures. Such coupled processes are described by a system of nonlinear ... -
A Simulation Study of Goodness-of-Fit Tests for Binary Regression with Applications to Norwegian Intensive Care Registry Data
(Master thesis, 2019-01-31)When using statistical methods to fit a model, the consensus is that it is possible to represent a complex reality in the form of a simpler model. It is helpful to systematically measure a model’s ability to capture the ... -
A simulation workflow for large-scale CO2 storage in the Norwegian North Sea
(Journal article, 2016-06)Large-scale CO2 injection problems have revived the interest in simple models, like percolation and vertically-averaged models, for simulating fluid flow in reservoirs and aquifers. A series of such models have been collected ... -
Simulations of multi-beam sonar echos from schooling individual fish in a quiet environment
(Peer reviewed; Journal article, 2012-12)A model is developed and demonstrated for simulating echosounder and sonar observations of fish schools with specified shapes and composed of individuals having specified target strengths and behaviors. The model emulates ... -
Simulering av torsk (Gadus Morhua) sin reaksjon på fartøystøy
(Master thesis, 2000) -
A singularity removal method for coupled 1D–3D flow models
(Journal article; Peer reviewed, 2019)In reservoir simulations, the radius of a well is inevitably going to be small compared to the horizontal length scale of the reservoir. For this reason, wells are typically modelled as lower-dimensional sources. In this ... -
Skadebeløpsmodellering i skadeforsikring
(Master thesis, 2009-06-01)I oppgaven modelleres skadegrader for skip med lognormalfordeling og Paretofordeling. I tillegg tar den for seg en ny sammenlått lognormal-Paretofordeling, og tilpasser de samme dataene til denne fordelingen. Skadegradene ... -
Skipped spawning in Northeast Arctic haddock Melanogrammus aeglefinus
(Peer reviewed; Journal article, 2015-04-22)Large interannual fluctuations in the numbers of offspring joining a teleost population are common, yet factors affecting offspring production, a key driver of fish population size and demography, are often poorly understood. ... -
Skriving i matematikk. Hva skriver elevene? En studie av elevenes fagspråk i matematikk 2P med eksempler fra emnet funksjoner.
(Master thesis, 2017-07-26)I masteroppgaven ”Skriving i matematikk. Hva skriver elevene? En studie av fagspråk i matematikk 2P med eksempler fra emnet funksjoner” fokuseres det på analyse av elevbesvarelser. Formålet med denne studien er å få økt ... -
Small data scattering for a cubic Dirac equation with Hartree type nonlinearity in $\R^{1+3}$
(Journal article; Peer reviewed, 2020)We prove that the initial value problem for the Dirac equation $(-i\gamma^\mu \partial_\mu + m) \psi= ( \frac{e^{- |x|}}{|x|} \ast ( \overline \psi \psi)) \psi \quad \text{in } \ \mathbb{R}^{1+3}$ is globally well-posed ... -
Socioeconomic and geographic differences in ablation of atrial fibrillation in Norway - a national cohort study
(Journal article; Peer reviewed, 2022)Background The aim of this study was to analyse whether there are patient related or geographic differences in the use of catheter ablation among atrial fibrillation patients in Norway. Methods National population-based ...