Blar i Department of Mathematics på tittel
Viser treff 896-915 av 1096
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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 injection-induced deformation for a stimulation experiment at the Grimsel underground laboratory
(Master thesis, 2020-11-06)Numerical models have increasingly become important tools to complement planning, testing, and implementation of technologies and strategies for geothermal reservoir projects in basement and crystalline igneous rock. Access ... -
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 grunne geotermiske systemer med naturlig konveksjon i borehull
(Master thesis, 2020-12-19)Introduksjon: Grunne geotermiske systemer benyttes til oppvarming og kjøling av husholdninger og større bygg. I etableringsfasen av slike systemer anvendes det modelleringsverktøy for ̊a beregne optimal dimensjonering av ... -
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 ... -
Solitoner generert av trykkperturbasjon på grunt vann
(Master thesis, 2003) -
Solute transport in aquifers with evolving scale heterogeneity
(Peer reviewed; Journal article, 2015)Transport processes in groundwater systems with spatially heterogeneous properties often exhibit anomalous behavior. Using first-order approximations in velocity fluctuations we show that anomalous superdiffusive behavior ... -
Solution of a non-strictly hyperbolic system modelling non-isothermal two-phase flow in a porous medium
(Department of Applied Mathematics report, Research report, 1987-04) -
Solution of a stationary Fokker-Planck equation.
(Department of Applied Mathematics report, Research report, 1971-06) -
Solution strategies for nonlinear conservation laws
(Doctoral thesis, 2015-08-21)Nonlinear conservation laws form the basis for models for a wide range of physical phenomena. Finding an optimal strategy for solving these problems can be challenging, and a good strategy for one problem may fail spectacularly ... -
Solvenskontroll ved skifting mellom ulike volatilitetsregimer
(Master thesis, 2009-06-02)Oppgåva handlar om utfordringar knytta til innføringa av Solvency 2.