Now showing items 21-40 of 1814

• #### A comparison of two parallel solution schemes for the advection-diffusion equation - Velocity guided random walk of paticles vs finite volume discretization on Cartesian grid ﻿

(Master thesis, 2017)
In this thesis two methods for solving the diffusion-advection equation was implemented using MPI. The two methods was a velocity guided random walk of particles and solving the advection-diffusion equation on a grid. Both ...
• #### A consistent reduction of the two-layer shallow-water equations to an accurate one-layer spreading model ﻿

(Journal article; Peer reviewed, 2019)
The gravity-driven spreading of one fluid in contact with another fluid is of key importance to a range of topics. These phenomena are commonly described by the two-layer shallow-water equations (SWE). When one layer is ...
• #### A correlative spatiotemporal microscale study of calcium phosphate formation and transformation within an alginate hydrogel matrix. ﻿

(Journal article; Peer reviewed, 2016)
The modification of soft hydrogels with hard inorganic components is a method used to form composite materials with application in non-load-bearing bone tissue engineering. The inclusion of an inorganic component may provide ...
• #### A CUDA Back-End for the Equelle Compiler. ﻿

(Master thesis, 2014)
As parallel and heterogeneous computing becomes more and more a necessity for implementing high performance simulators, it becomes increasingly harder for scientists and engineers without experience in high performance ...
• #### A Density Functional Theory Study of Hydrogen Transfer and Rotational Barriers in Vitamin E-like Molecules ﻿

(Master thesis, 2011)
A study of the antioxidant property of two vitamin E simplifications with density functional theory has been done. In one of the simplifications the phytyl tail and the methyl group on the heterocyclic ring in vitamin E ...
• #### A Framework for Constructing and Evaluating Probabilistic Forecasts of Electricity Prices: A Case Study of the Nord Pool Market ﻿

(Master thesis, 2011)
A framework for a 10-day ahead probabilistic forecast based on a deterministic model is proposed. The framework is demonstrated on the system price of the Nord Pool electricity market. The framework consists of a two-component ...
• #### A GPU Accelerated Simulator for CO2 Storage ﻿

(Master thesis, 2014)
The goal of this thesis has been to develop a fast simulator for large-scale migration of CO2 in saline aquifers. We have also focused on being able to let the CO2 storage atlas from the Norwegian Petroleum Directorate ...
• #### A high precision method for quantitative measurements of reactive oxygen species in frozen biopsies ﻿

(Journal article; Peer reviewed, 2014)
Objective: An electron paramagnetic resonance (EPR) technique using the spin probe cyclic hydroxylamine 1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine (CMH) was introduced as a versatile method for high ...
• #### A hybrid aluminium alloy and its zoo of interacting nano-precipitates ﻿

(Journal article, 2015)
An alloy with aluminium as its base element is heat treated to form a multitude of precipitate phases known from different classes of industrial alloys: Al–Cu(–Mg), Al–Mg–Si–Cu, and Al–Zn–Mg. Nanometer-sized needle-shaped ...
• #### A K-Wishart Markov random field model for clustering of polarimetric sar imagery ﻿

(Conference object; Peer reviewed, 2011)
• #### A lumped parameters model for cerebral blood flow in neonates and infants with patent ductus arteriosus ﻿

(Master thesis, 2019)
En lumped parametermodell er utviklet for a ̊ studere dynamikken til en pulserende strømning i et sirkulasjonssystem, inkludert det cerebrale vaskulære nettverket. Denne modellen ble utviklet fra en forenklet anatomisk ...
• #### A minimal model for extragalactic high-energy particles ﻿

(Journal article; Peer reviewed, 2017)
We explain in a unified way the experimental data on ultrahigh energy cosmic rays (UHECR) and neutrinos, using a single source class and obeying limits on the extragalactic diffuse gamma-ray background (EGRB). If UHECRs ...
• #### A Model for the Mixing of Black Carbon Aerosols and Mineral Dust Particles in the Atmosphere ﻿

(Master thesis, 2016)
The process when freshly emitted black carbon particles are forming clusters and the mixing of these black carbon clusters and mineral dust particles has been simulated for a two-dimensional system. This has been done by ...
• #### A Monte Carlo Algorithm for Immiscible Two-Phase Flow in Porous Media ﻿

(Journal article; Peer reviewed, 2017)
We present a Markov Chain Monte Carlo algorithm based on the Metropolis algorithm for simulation of the flow of two immiscible fluids in a porous medium under macroscopic steady-state conditions using a dynamical pore ...
• #### A Monte Carlo Study of the Criticality of the 3D XY Model ﻿

(Master thesis, 2015)
In this master thesis the criticality of the 3D XY model with cubic anisotropy has been examined by the means of Monte Carlo simulation. The 3D XY model is a special case of the $O(n)$ spin-vector model which describe ...
• #### A nano-silicate material with exceptional capacity for CO2 capture and storage at room temperature ﻿

(Journal article; Peer reviewed, 2018)
In order to mitigate climate change driven by the observed high levels of carbon dioxide (CO2) in the atmosphere, many micro and nano-porous materials are being investigated for CO2 selectivity, capture and storage (CCS) ...
• #### A new algorithm for remote sensing mesopause temperatures using the hydroxyl airlgow ﻿

(Master thesis, 2013)
Ground based measurements of the hydroxyl airglow started in Trondheim (63.4 N, 10.4 E) 20. November 2012 using a linear InGaAs PDA detector covering the ∼1450-1650 nm wavelength range. The instrument have suc- cessfully ...
• #### A Numerical Study of Capillary and Viscous Drainage in Porous Media ﻿

(Dr. ingeniøravhandling, 0809-103X; 1999:131, Doctoral thesis, 1999)
This work concentrates on the flow properties when one fluid displaces another fluid in a network of pores and throats. We consider the scale where individual pores enter the description and we use a network model to ...
• #### A Numerical Study of Transient Friction and Transient Friction Modelling in Ramp-up and Ramp-down Flow Conditions Similar to Pump Ramp-up and Valve Closure in Gas Transport Pipelines ﻿

(Master thesis, 2014)
When gas is transported in long pipelines, computational models are used as tools to plan and to optimize hydraulic capacities. Because of the length of the pipelines the models are mostly one-dimensional (1D) which in ...
• #### A random Matrix Approach to collective Trends of falling and rising Stock Markets ﻿

(Master thesis, 2011)
An inverse statistics analysis of one minute stock quotes from 492 large Europeancompanies has revealed the existence of a gain-loss asymmetry in thefollowing index. The gain-loss asymmetry differs from that observed for ...