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Ship Performance and Navigation Data Compression and Communication under Autoencoder System Architecture
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-21)
Modern vessels are designed to collect, store and communicate large quantities of ship performance and navigation information through complex onboard data handling processes. That data should be transferred to shore based data centers for further analysis and storage. However, the associated transfer cost in large-scale data sets is a major challenge for the shipping industry, today. The same cost ...
CFD modelling of pressure and shear rate in torsionally vibrating structures using ANSYS CFX and COMSOL Multiphysics
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
This paper discusses numerical methodologies to simulate micro vibrations on a nontrivial torsionally oscillating structure. The torsional structure is the tip of a viscosity-density sensor using micro vibrations to measure the fluid properties. A 2D transient simulation of the fluid domain surrounding the tip of the sensor has been conducted in ANSYS CFX and COMSOL Multiphysics software. ANSYS CFX ...
Ship speed power performance under relative wind profiles in relation to sensor fault detection
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-19)
Statistical Data analysis and visualization approaches to identify ship speed power performance under relative wind (i.e. apparent wind) profiles are considered in this study. Ship performance and navigation data of a selected vessel are analyzed, where various data anomalies, i.e. sensor related erroneous data conditions, are identified. Those erroneous data conditions are investigated and several ...
Endurance Test on Carbon Film Fixed Resistor under Escalated Voltage Stress
(Journal article; Peer reviewed; Tidsskriftartikkel, 2018)
Film fixed resistor is a basic unit in the electronic devices. As it is less frequently failed than other units such as capacitor, the reliability and robustness of it are less concerned both in the academics and in the industries. This paper investigates the endurance of the carbon film fixed resistor. The resistance shift and life of it under the escalated voltage stress level are the aim. A PCB ...
Nettverksorganisasjoners betydning for kunnskapstilgang og innovasjon
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-04)
I denne artikkelen undersøker vi om regionale innovasjonsnettverksorganisasjoner (RINOer) bidrar til bedre kunnskapstilgang og innovasjon. Hvilke organiserte aktiviteter eller funksjoner i RINOen er i så fall relevante? Og i hvilken grad påvirker andre kjennetegn ved RINOene eller bedriftene som deltar, et slikt utfall? Bedriftene i studien rapporterer at RINO-deltakelsen har bidratt positivt både ...
Critical infrastructure resilience: A Nordic model in the making?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-19)
In recent years, there has been a shift in emphasis from critical infrastructure protection to that of resilience. This development reflects the acknowledgment that complete protection can never be guaranteed, and that achieving the desired level of protection is not cost-effective as a rule in relation to the actual threats. This article reviews the responses of four of the five Nordic countries ...
Column leaching heavy metal from tailings following simulated climate change in the Arctic area of Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
This study aimed to assess how the current climate change perspective, with various air temperature (4°C, 10°C, 14°C and 18°C) affected metal releasing from tailings. Heavy metals pollution from tailings leaching are of increasing concern. Column leaching experiment was conducted for 15 weeks to a series of tailings with 20 mm/week water leaching four temperature situations. Leachate chemical physics ...
Postural Stability Variables for Dynamic Equilibrium
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
Experiments on the maintenance of postural stability on flat stationary support surfaces (quiet standing) that show only limited modes of the potential configurations of balance stability have dominated investigations of balance in quiet upright standing. Recent studies have revealed coordination properties of the whole body in maintaining dynamic postural stability with the application of moving ...