Blar i Institutt for marin teknikk på tittel
Viser treff 3307-3326 av 3472
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Understanding Agility as a Parameter for Fuel-Flexible Ships
(SNAME 14th International Marine Design Conference;, Research report, 2022)With the need for lower-emission maritime transport solutions, shipowners and designers face uncertainty when it comes to the selection of fuel today and in the future. The effects of this uncertainty can be mitigated to ... -
Understanding and predicting the effect of entrance cone diameters on the catch efficiency of snow crabs (Chionoecetes opilio) in conical pots
(Peer reviewed; Journal article, 2022)Conical pots with a plastic entrance cone on the top are a type of fishing gear used to harvest snow crabs (Chionoecetes opilio) in Arctic regions. In this study, we assessed the effect of pot entrance diameter on the catch ... -
Understanding Offshore Support Vessel Activity by the Use of AIS Data
(Master thesis, 2019)Denne oppgaven undersøker om Automatisk indentifikasjonssystem (AIS) data kombinert med markedsdata fra offshore olje- og gassindustrien kan gi innsikt i operasjoner utført av forsyningsfartøy. All offshore olje- og ... -
Understanding Polar Environment: Preliminary Results from Deep-Learning-based Segmentation of Optical Ice Images
(Chapter, 2019)Computer vision-aided scene understanding has drawn much attention, especially in autonomous vehicles and advanced driver assistance systems. Image segmentation forms the core of these systems, which is required for effective ... -
Understanding the effect of assumptions on shell plate thickness for arctic ships
(Journal article; Peer reviewed, 2015)The presence of ice requires specially constructed ships. The biggest challenge in this aspect is ice loads on ship’s hull: processes of deformation and fracture of ice are not fully understood and ice geometry and mechanical ... -
Undersøkelse av lysrespons og svømmeadferd hos lakselus (Lepeophtheirus salmonis) ved hjelp av deteksjon og sporing
(Master thesis, 2019)Denne masteroppgaven har vært en del av det tverrfaglige prosjektet Profylax, som har hatt fokus på å øke kunnskapen om lakselus som er et økende problemet i oppdrettsnæringen. Muligheten for å bruke datasynverktøy til å ... -
Undersøkelse av lysrespons og svømmeadferd hos lakselus (Lepeophtheirus salmonis) ved hjelp av deteksjon og sporing
(Master thesis, 2019)Denne masteroppgaven har vært en del av det tverrfaglige prosjektet Profylax, som har hatt fokus på å øke kunnskapen om lakselus som er et økende problemet i oppdrettsnæringen. Muligheten for å bruke datasynverktøy til å ... -
Undervanns baneplanlegging ved bruk av sonarbildedata
(Master thesis, 2019)Fjernstyrte undervannsfartøy (ROV) er mye brukt i offshore-industrien til forskjellige oppgaver og gjørem ̊al som tekniske inngrep, observasjoner og utforskning. For å redusere avhengigheten av over- flateskip og piloter ... -
Undervanns Objektdetektering ved bruk av en Convolutional Neural Network Basert Deteksjons Modell
(Master thesis, 2019)Denne masteroppgaven tar sikte på å utnytte en etablert Convolutional Neural Network (CNN) basert detekteringsmetode for å undersøke dens ytelse når det kommer til å automatisk klassifisere og lokalisere strukturer og ... -
Underwater explosions near marine structures: a Dynamics Fluid Structure Domain-Decomposition strategy
(Chapter, 2016)Historically underwater explosions (UEs) have been investigated for their huge military relevance, but they remain an important issue also for civil marine applications. As an example, UEs can occur near or on oil-gas ... -
Underwater hyperspectral imaging as an in situ taxonomic tool for deep-sea megafauna
(Journal article; Peer reviewed, 2018)Identification of benthic megafauna is commonly based on analysis of physical samples or imagery acquired by cameras mounted on underwater platforms. Physical collection of samples is difficult, particularly from the deep ... -
Underwater hyperspectral imaging: a new tool for marine archaeology
(Journal article; Peer reviewed, 2018)By applying an underwater hyperspectral imager (UHI) to a selection of archaeological artifacts, we have found spectral signatures that are representative of materials likely to be present at wreck sites. By successfully ... -
Underwater Machine Vision for Long Term Operation of Robotic Platforms
(Master thesis, 2023)Denne masteroppgaven fokuserer på å forbedre geolokalisering under vann ved å identifisere den mest effektive metoden for forbehandling av data og registrering av punktskyer. Vi undersøker et flerårig 3D-punktsky-datasett ... -
Underwater parachute, an alternative installation method
(Master thesis, 2018)In the following thesis the concept of free-falling underwater parachute systems are investigated, as a substitute for traditional methods for installing subsea structures. Model size experimental research has been carried ... -
Underwater Pose Estimation with Deep Learning
(Master thesis, 2019)Denne masteroppgaven undersøker om dyp læring kan anvendes for kamerabasert lokalisering av undervannsfartøy. En undergren innenfor dype nevrale nettverk, nemlig convolutional neural networks (CNN), er valgt for dette ... -
Underwater Position and Attitude Estimation Using Acoustic, Inertial, and Depth Measurements
(Peer reviewed; Journal article, 2019)This article considers the problem of constructing an observer for estimating position, velocity, attitude, underwater wave speed, rate sensor bias, and accelerometer bias that has both proven stability and close-to-optimal ... -
Underwater Positioning using near Surface Long Baseline Transponder’s Induced by Wave Motion
(Chapter, 2017)This paper presents a filter for underwater positioning in an aquaculture environment with demanding weather conditions. The positioning system is based on acoustic transponders mounted at a net pen on the sea surface. The ... -
Unsteady hydrodynamic forces of solid objects vertically entering the water surface
(Journal article; Peer reviewed, 2019)We investigate the unsteady hydrodynamic force of solid objects vertically entering water with an air cavity behind the falling body. Physical models are proposed to represent the force components corresponding to the body ... -
Unsteady RANS Simulation of Flow around Rectangular Cylinders with different Aspect Ratios at High Reynolds Number
(Master thesis, 2014)Computational Fluid Dynamics (CFD) has been used to evaluate essential hydrodynamic quantities and flow structures around rectangular cylinders with different chord length to depth ratios (aspect ratios) at high Reynolds ... -
Upheaval Buckling of Offshore Pipelines
(Master thesis, 2013)The main purpose of this thesis was to develop a MATLAB program based on Terndrup-Pedersen? analytical method for upheaval buckling analysis and verify the analytical model by comparing with FE analysis using software ...