Blar i Department of Mathematics på tittel
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Htype foliations
(Journal article; Peer reviewed, 2022)With a view toward subRiemannian geometry, we introduce and study Htype foliations. These structures are natural generalizations of Kcontact geometries which encompass as special cases Kcontact manifolds, twistor spaces, ... 
Heat Transfer Upscaling in Geothermal Reservoirs
(Master thesis, 20151120)In this thesis we implement a numerical model of heat transfer in geothermal reservoirs. We use existing pressure and flow transport solvers as a starting point to investigate discretization techniques for a convectionconduction ... 
Hedging av rentederivat
(Master thesis, 200611) 
The heritability curve and its applications to human nonMendelian traits
(Doctoral thesis, 20231208)Arvbarhet er et viktig mål for å beskrive en ikkemendelsk egenskap; den måler i hvilken andel verdien av egenskapen påvirkes av genetisk materiale. I klassiske biometriske modeller er arvbarheten konstant over hele ... 
Hidden semiMarkovswitching quantile regression for time series
(Journal article; Peer reviewed, 2021)A hidden semiMarkovswitching quantile regression model is introduced as an extension of the hidden Markovswitching one. The proposed model allows for arbitrary sojourntime distributions in the states of the Markovswitching ... 
Hierarchical Bayesian Survival Analysis of AgeSpecific Data From Birds' Nests
(Master thesis, 20101119)In this thesis, I first present the grassland birds data from Wells(2007) which is used by several different methods of estimating the nest survival rates. The hierarchical Bayesian method from Cao(2009) then is introduced ... 
High order volume preserving integrators for three kinds of divergencefree vector fields via commutators
(Journal article, 2013)In this paper, we focus on construction of high order volume preserving integrators for divergencefree vector fields of the monomial basis, exponential basis and tensor product of the monomial and exponential basis. We ... 
Highaccuracy phasefield models for brittle fracture based on a new family of degradation functions
(Peer reviewed; Journal article, 201802)Phasefield approaches to fracture based on energy minimization principles have been rapidly gaining popularity in recent years, and are particularly wellsuited for simulating crack initiation and growth in complex fracture ... 
Higher Hochschild homology is not a stable invariant
(Master thesis, 20160527)The purpose of this thesis is to study the higher Hochschild homology of some rational algebras. We know that for some algebras the higher Hochschild homology is a stable invariant. Studying the homology over the spheres ... 
Higher order spacetime elements for a nonlinear Biot model
(Journal article; Peer reviewed, 2019)In this work, we consider a nonlinear extension of the linear, quasistatic Biot’s model. Precisely, we assume that the volumetric strain and the fluid compressibility are nonlinear functions. We propose a fully discrete ... 
The highly nonlinear shallow water equation: local wellposedness, wave breaking data and nonexistence of sech2 solutions
(Journal article; Peer reviewed, 2024)In the context of the initial data and an amplitude parameter ε, we establish a local existence result for a highly nonlinear shallow water equation on the real line. This result holds in the space Hk as long as k > 5/2. ... 
Horisontkunnskap i aksjon. Om lærernes syn på relevansen av avansert matematisk kunnskap i undervisningsarbeidet
(Master thesis, 20180620)In this master’s thesis I have examined in which ways Norwegian secondary teachers in mathematics think they need advanced mathematical knowledge in their teaching practice, and I have discussed this against the concept ... 
A horizontal Chern–Gauss–Bonnet formula on totally geodesic foliations
(Journal article; Peer reviewed, 2022)Under suitable conditions, we show that the Euler characteristic of a foliated Riemannian manifold can be computed only from curvature invariants which are transverse to the leaves. Our proof uses the hypoelliptic subLaplacian ... 
Horizontal holonomy and foliated manifolds
(Journal article; Peer reviewed, 2019)We introduce horizontal holonomy groups, which are groups defined using parallel transport only along curves tangent to a given subbundle D of the tangent bundle. We provide explicit means of computing these holonomy groups ... 
Human intracranial pulsatility during the cardiac cycle: a computational modelling framework
(Journal article; Peer reviewed, 2022)Background Today’s availability of medical imaging and computational resources set the scene for highfidelity computational modelling of brain biomechanics. The brain and its environment feature a dynamic and complex ... 
A Hybrid Domain Decomposition Method for AdvectionDiffusion Problems
(Department of Applied Mathematics report, Research report, 199609) 
Hybrid Modeling of the NBody Problem with Applications to Astrophysics
(Master thesis, 20220601)Over the last years, the field of hybrid modeling, the concept of combining datadriven machine learning models and numerical solution methods to simulate a physical system, has seen an immense increase in research. This ... 
Hybrids between common and Antarctic minke whales are fertile and can backcross
(Peer reviewed; Journal article, 20130415)Background: Minke whales are separated into two genetically distinct species: the Antarctic minke whale found in the southern hemisphere, and the common minke whale which is cosmopolitan. The common minke whale is further ... 
Hydromechanical simulation and analysis of induced seismicity for a hydraulic stimulation test at the Reykjanes geothermal field, Iceland
(Journal article; Peer reviewed, 2021)The combination of seismic analysis with advanced physicsbased simulation provides an opportunity to further understand injectioninduced fault reactivation, including the hydromechanical interplay between different ... 
HyperHMM: efficient inference of evolutionary and progressive dynamics on hypercubic transition graphs
(Journal article; Peer reviewed, 2023)Motivation: The evolution of bacterial drug resistance and other features in biology, the progression of cancer and other diseases and a wide range of broader questions can often be viewed as the sequential stochastic ...