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Computational issues in parameter estimation for hidden Markov models with template model builder
(Journal article; Peer reviewed, 2023)A popular way to estimate the parameters of a hidden Markov model (HMM) is direct numerical maximization (DNM) of the (log-)likelihood function. The advantages of employing the TMB [Kristensen K, Nielsen A, Berg C, et al. ... -
Computational methods and tools to predict cytochrome P450 metabolism for drug discovery
(Peer reviewed; Journal article, 2019)In this review, we present important, recent developments in the computational prediction of cytochrome P450 (CYP) metabolism in the context of drug discovery. We discuss in silico models for the various aspects of CYP ... -
Computational Science in the 17th Century. Numerical Solution of Algebraic Equations: Digit–by–Digit Computation
(Chapter, 2022)In this paper we give a complete overview of test–problems by Viète from 1600, Harriot from 1631 and Oughtred from 1647. The original material is not easily accessible due to archaic language and lack of conciseness. Viéte’s ... -
Computational science in the eighteenth century. Test cases for the methods of Newton, Raphson, and Halley: 1685 to 1745
(Peer reviewed; Journal article, 2020)This is an overview of examples and problems posed in the late 1600s up to the mid 1700s for the purpose of testing or explaining the two different implementations of the Newton-Raphson method, Newton’s method as described ... -
Computational search for isotopic semifields and planar functions in characteristic 3
(Master thesis, 2023-09-01)In this thesis, we investigate the possibility of finding new planar functions and corresponding semifields in characteristic 3 by the construction of isotopic semifields from the known families and sporadic instances of ... -
Computational searches for quadratic APN functions with subfield coefficients
(Master thesis, 2023-06-01)Almost perfect nonlinear (APN) functions are important in fields such as algebra, combinatorics, cryptography, etc. Finding new APN functions is of special importance in cryptography. This is because when used in modern ... -
Computationally Efficient Methods for Seismic Modeling and Inversion
(Doctoral thesis, 2020-11-18)This thesis presents new methods for the modeling of seismic waveforms based on ray theory and ray-Born integrals. The waveforms are used in forward modeling, imaging and full waveform inversion and are computed in 3D ... -
Computer-aided proofs and algorithms in analysis
(Doctoral thesis, 2013-06-14)The computational power has increased dramatically since the appearance of the first computers, making them a vital tool in the analysis of dynamical systems. We present further applications of those two basic ideas, namely ... -
Computer-Bridge
(2020-06-17) -
Computing Connected Components on Multiple GPUs
(Master thesis, 2018-12-19)We look at multiple GPU programming, using the connected components algorithm as the basis when we look into libraries and runtime environment for multiple GPU programming. We also show that Rem is a fast parallel algorithm, ... -
Computing cutwidth and pathwidth of semi-complete digraphs via degree orderings
(Peer reviewed; Journal article, 2013)The notions of cutwidth and pathwidth of digraphs play a central role in the containment theory for tournaments, or more generally semi-complete digraphs, developed in a recent series of papers by Chudnovsky, Fradkin, Kim, ... -
Computing minimal triangulation in Time o(n^2.376)
(Journal article, 2005) -
Computing the distance to continuous-time instability of quadratic matrix polynomials
(Journal article; Peer reviewed, 2020)A bisection method is used to compute lower and upper bounds on the distance from a quadratic matrix polynomial to the set of quadratic matrix polynomials having an eigenvalue on the imaginary axis. Each bisection step ... -
Computing Twitter Influence with a GPU
(Master thesis, 2020-09-01) -
Computing Width Parameters of Graphs
(Doctoral thesis, 2024-05-15)Trebredden til en graf beskriver dens likhet med trær ved hvor godt den kan dekomponeres ved hjelp av små separatorer. Den er definert som minimumsbredden av en tre-dekomponering av grafen. Når en graf er gitt sammen med ... -
Concentrations and endocrine disruptive potential of phthalates in marine mammals from the Norwegian Arctic
(Journal article; Peer reviewed, 2021)This study investigated concentrations of phthalates (diesters of phthalic acids) in blubber/adipose tissue of blue whales (Balaenoptera musculus), fin whales (Balaenoptera physalus), bowhead whales (Balaena mysticetus) ... -
Concept analysis and life cycle assessment of large-scale, offshore hydrogen production, storage and distribution options
(Master thesis, 2022-06-01)The world and its inhabitants are facing pressing challenges related to the global warming of the Earth. The increasing share of renewable electricity is forecasted to decrease emissions of greenhouse gases, but electrification ... -
A conceptual geological model for offshore wind sites in former ice stream settings: The Utsira Nord site, North Sea
(Journal article; Peer reviewed, 2022)Conceptual geological models of the shallow subsurface that integrate geological and geotechnical information are important for more strategic data acquisition and engineering at offshore wind sites. Utsira Nord is an ... -
Concurrent jellyfish blooms and tenacibaculosis outbreaks in Northern Norwegian Atlantic salmon (Salmo salar) farms
(Peer reviewed; Journal article, 2017-11-02)Tenacibaculosis is an increasing problem in the Norwegian Atlantic salmon aquaculture industry causing significant economic losses. In September 2015, two separate outbreaks of suspected tenacibaculosis occurred at two ... -
Condensation of water on rust surfaces, and possible implications for hydrate formation in pipelines
(Master thesis, 2011-06-01)The threat of climate change has put the spotlight on the increase in carbon emissions and possible methods to attenuate it. As a consequence of this, oil and gas companies have started to consider both how to reduce ...