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On the validity of the two-fluid-KTGF approach for dense gravity-driven granular flows as implemented in ANSYS Fluent R17.2
(Peer reviewed; Journal article, 2020)( Engelsk ) As a subproblem of solid transport in wellbores, we have investigated the cliff collapse problem by means of the Two-Fluid-Model (TFM), where the rheological description of the second phase (sand) is governed ... -
On the value of popular crystallographic databases for machine learning prediction of space groups
(Peer reviewed; Journal article, 2022)Predicting crystal structure information is a challenging problem in materials science that clearly benefits from artificial intelligence approaches. The leading strategies in machine learning are notoriously data-hungry ... -
On two speed optimization problems for ships that sail in and out of emission control areas
(Journal article; Peer reviewed, 2015)This paper deals with two speed optimization problems for ships that sail in and out of Emission Control Areas (ECAs) with strict limits on sulfur emissions. For ships crossing in and out of ECAs, such as deep-sea vessels, ... -
On weldability of aerospace grade Al-Cu-Li alloy AA2065 by wire-feed laser metal deposition
(Peer reviewed; Journal article, 2022)Al-Cu-Li alloys exhibit a superior strength to weight ratio, making the alloys attractive for applications within aviation and aerospace. However, their widespread application has been somewhat limited by the challenges ... -
On-board Live Storage of Atlantic Cod (Gadus morhua): Effects of Capture Stress, Recovery, Delayed Processing, and Frozen Storage on Fillet Color Characteristics
(Journal article; Peer reviewed, 2019-11-11)On-board live storage of Atlantic cod caught by trawl was evaluated as a potential method to improve the color characteristics of fillets. Before slaughter and processing, the fish were: (i) stored live for 3–6 h, (ii) ... -
On-Bottom Stability Analysis of Subsea Pipelines Under Combined Irregular Waves and Currents
(ASME Proceedings | Pipelines, Risers, and Subsea Systems;OMAE2017-61363, Chapter, 2017-06-25)The objective of the paper is to study the effect of different parameters regarding on-bottom stability of subsea pipelines under combined irregular waves and currents. The effect of friction coefficient is first investigated. ... -
On-Line PI Controller tuning Using Closed-Loop Setpoint Response
(Peer reviewed; Journal article, 2010) -
Onboarding software developers and teams in three globally distributed legacy projects: A multi-case study
(Journal article; Peer reviewed, 2017)Onboarding is the process of supporting new employees regarding their social and performance adjustment to their new job. Software companies have faced challenges with recruitment and onboarding of new team members, and ... -
One size fits all? Safety management regulation of ship accidents and personal injuries
(Journal article; Peer reviewed, 2016)Safety management regulation is an important supplement to market forces to establish a sufficient safety level in high-risk industries. The accident statistics in Norwegian maritime passenger transportation display a ... -
One-pot synthesis of highly dispersed mesoporous Cu/ZrO2 catalysts for NH3-SCR
(Peer reviewed; Journal article, 2021)Catalysts consisting of highly dispersed copper on a mesoporous ZrO2 support were synthesised via a one-pot sol-gel synthesis and were tested for the selective catalytic reduction of NOx by NH3. The copper dispersion was ... -
One-year trial of 12-hour shifts in a non-intensive care unit and an intensive care unit in a public hospital: a qualitative study of 24 nurses’ experiences
(Journal article; Peer reviewed, 2019)Objectives The aim of this study was to provide recommendations to hospital owners and employee unions about developing efficient, sustainable and safe work-hour agreements. Employees at two clinics of a hospital, one a ... -
Online dimensional control of rolled steel profiles using projected fringes
(Peer reviewed; Journal article, 2020)Fringe projection is a versatile method for mapping the topography of surfaces. In this paper, it is used to measure the defects on the head of railroad rails while the rails are moving. Railroad rails are made by hot ... -
Online measurements of fluoride ions in proton exchange membrane water electrolysis through ion chromatography
(Peer reviewed; Journal article, 2021)This work investigates the online monitoring of fluoride ion concentration in proton exchange membrane water electrolysers (PEMWE) effluent water using an automated ion chromatography (IC) setup. Prototype catalyst coated ... -
Online monitoring of aluminium primary production gas composition by use of Fourier-transform infrared spectroscopy
(Journal article; Peer reviewed, 2014)Online monitoring of aluminium primary production raw gas is challenging due to the high concentration of HF in the presence of water. Tunable Diode Laser (TDL) analyzers retrofitted with sapphire optical windows allow for ... -
Online Parameter Adjustment Method for Arm Voltage Estimation of the Modular Multilevel Converter
(Journal article; Peer reviewed, 2019)The method used to calculate insertion indexes plays an important role in determining the overall performance of the Modular Multilevel Converter (MMC). Direct voltage control, which is the simplest option, results in a ... -
Onset of water accumulation in oil/water pipe flow – experiments and modelling with LedaFlow
(Peer reviewed; Journal article, 2020)In oil/water flows with very low water rates, the steady-state water fraction jumps discontinuously from a low value to a high value when the oil rate falls below the critical value. This jump is understood to be connected ... -
Ontogeny-Specific Skeletal Deformities in Atlantic Haddock Caused by Larval Oil Exposure
(Peer reviewed; Journal article, 2021)Bone deformities are one of the main effects of crude oil exposure in marine fish larvae. Craniofacial and jaw deformities, if severe enough, may restrict feeding and ultimately kill the developing larvae. This study aimed ... -
An ontology matching approach for semantic modeling: A case study in smart cities
(Peer reviewed; Journal article, 2021)This paper investigates the semantic modeling of smart cities and proposes two ontology matching frameworks, called Clustering for Ontology Matching-based Instances (COMI) and Pattern mining for Ontology Matching-based ... -
Ontology-Based Fault Tree Analysis Algorithms in a Fuzzy Environment for Autonomous Ships
(Peer reviewed; Journal article, 2021)This study deals with fault tree analysis algorithms based on an ontology-based approach in a fuzzy environment. We extend fuzzy fault tree analysis by embedding ontology-based fault tree structures. The ontology-based ... -
Ontology-based Use Cases for Design-time and Runtime Composition of Mobile Services
(Chapter, 2009)This paper presents application of ontology-based modelling and reasoning related to the different phases of the lifecycle of mobile services. Ontology-based descriptions complement traditional design-time and runtime ...