Faculty of Science and Technology
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The Polar Code's Implications for Safe Ship Operations in the Arctic Region.
(Peer reviewed; Journal article, 2020-09)ABSTRACT: Simultaneously with a decreasing sea ice cover in the Arctic region an increase in ship traffic is experienced in these waters, meaning a higher probability of accidents and incidents to occur. The capability to ... -
Bryan’s Maximum Entropy Method—Diagnosis of a Flawed Argument and Its Remedy
(Peer reviewed; Journal article, 2020-09)The Maximum Entropy Method (MEM) is a popular data analysis technique based on Bayesian inference, which has found various applications in the research literature. While the MEM itself is well-grounded in statistics, I ... -
Parametric study of different unbonded tendon layouts in pre-stressed concrete flat plates
(Peer reviewed; Journal article, 2020-11)Post-tensioned unbonded tendons are widely used in fat slabs/plates when there is a demand for large span lengths, durable tendons and a reduction in the weight of structure. For post-tensioned fat slab/plates, diferent ... -
Contributions to the Research on Risk Attenuation, Risk Amplification, Trust, and Stakeholder Involvement Implications of an uncertainty-based risk perspective
(PhD thesis UiS;, Doctoral thesis, 2021-01)The overall objective of this thesis is to contribute to the development of new knowledge related to risk perception and communication, particularly emphasising the issues of risk attenuation, risk amplification, trust, ... -
The Seismic Imaging and Interpretation of Faults: A Case Study from the Snøhvit Field, Barents Sea
(PhD thesis UiS;568, Doctoral thesis, 2021-01)An accurate understanding of faults in the subsurface is critical to successful petroleum exploration and production. Faults define sediment distribution pathways during deposition, act as barriers or conduits to fluid ... -
Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements
(Peer reviewed; Journal article, 2020-01)This paper presents a numerical algorithm used together with a Finite-Element based Vortex-Induced Vibration (VIV) prediction software VIVANA to obtain a hydrodynamic force coefficient database based on response measurements ... -
Opacity dependence of elliptic flow in kinetic theory
(Peer reviewed; Journal article, 2019-09)The observation of large azimuthal anisotropies vn in the particle spectra of proton–proton (pp) and proton–nucleus (pA) collisions challenges fluid dynamic interpretations of vn, as it remains unclear how small collision ... -
The Shapley Value of Coalitions to Other Coalitions
(Peer reviewed; Journal article, 2020-09)The Shapley value for an n-person game is decomposed into a 2n × 2n value matrix giving the value of every coalition to every other coalition. The cell ϕIJ(v, N) in the symmetric matrix is positive, zero, or negative, ... -
Safety and Emergency Response Associated with Cold Climate Marine Operations
(PhD thesis UiS;, Doctoral thesis, 2020)This dissertation is developed by GMC Maritime and the University of Stavanger and is part of the industrial PhD program at the Norwegian Research Council. The aim of the work is to identify the governing mechanisms ... -
Challenges with Gas Hydrate Formation
(Peer reviewed; Journal article, 2019)Many multiphase flow lines are prone to hydrate formation unless prevention methods are put in place. Chemical management of hydrate formation is traditionally done with thermodynamic hydrate inhibitors but in the last 25 ... -
Sikkerhetsstyring
(Masteroppgave/UIS-TN-ISØP/2020;, Master thesis, 2020-10-17)1. juli 2001 trådte lov om forebyggende sikkerhet i kraft. Dermed ble det forebyggende sikkerhetsarbeidet i Norge for første gang forankret i en egen sikkerhetslov. 1. januar 2019 trådte den reviderte sikkerhetsloven, lov ... -
Taushetsplikt mellom nødetatene - en studie i nødetatenes regelverk og praksis for utveksling av tidskritisk sensitiv informasjon
(Masteroppgave/UIS-TN-ISØP/2020;, Master thesis, 2020-10)Nødetatene har gjennomgått betydelige endringer i de senere årene. Disse endringene har medført at politi-, brann og helsevesen i større grad enn tidligere må utfylle hverandre. Konsekvensen av blant annet sentralisering ... -
Permeability evolution in chalk linked to stress and thermochemical aspects of North Sea reservoir conditions
(PhD thesis UiS;564, Doctoral thesis, 2020-12)The project was initiated by The National IOR Centre of Norway within the University of Stavanger and it aligns with the overall goal of the centre to improve oil recovery on the Norwegian Continental Shelf. It contributes ... -
Information in Local Curvature: Three Papers on Adaptive Methods in Computational Statistics
(PhD thesis UiS;562, Doctoral thesis, 2020-11)Advanced statistical computations have become increasingly important, as with the increased flexibility of models capturing complex relationships in new data and use-cases, comes increased difficulties of fitting procedures ... -
A LSSVR-PSO machine learning model for the estimation of reservoir porosity from petrophysical well logs
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-10)Reservoir porosity is a key parameter in the reservoir evaluation and geomechanics. To obtain accurate measurement of porosity can be time-consuming and expensive by core sampling or applying various well logging tools. ... -
New Drilling Technology for Hole Cleaning and Efficient Drilling
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-07)Well integrity is an important safety aspect of a well. Lack of wellbore integrity can lead to challenges like wellbore collapse, stuck pipe, lost circulation and sloughing shales, which are all big problems for drillers. ... -
Left-Invariant Pseudo-Riemannian Metrics on Lie Groups
(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020)n differential geometry and mathematical physics, there is interest in left-invariant pseudo-Riemannian metrics on Lie groups. We learn and review Lie theory, representation theory, geometric invariant theory, and differential ... -
X-ray Studies on partially decomposed γ- Mg(BH4)2
(Masteroppgave/UIS-TN-IMF/2020;, Master thesis, 2020-07-15)Hydrogen is the energy that fuels the sun and the stars. Having the potential to be zero-carbon during production, when produced by renewable resources, it is an attractive carrier of the pollution-free renewable energy. ... -
Automatic Supervisory Controller for Deadlock Control in Reconfigurable Manufacturing Systems with Dynamic Changes
(Peer reviewed; Journal article, 2020-07)In reconfigurable manufacturing systems (RMSs), the architecture of a system can be modified during its operation. This reconfiguration can be caused by many motivations: processing rework and failures, adding new products, ... -
The COVID-19 pandemic: how can risk science help?
(Peer reviewed; Journal article, 2020-04)This paper reflects on how risk science, with its concepts, principles, approaches, methods and models, can support the actual assessments, communication and handling of the vulnerabilities and risks related to the Coronavirus ...
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