Browsing Institutt for marin teknikk by Title
Now showing items 751-770 of 3428
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DC-DC Converter Control for Peak-Shaving in Shipboard DC Power System via Hybrid Control
(Chapter, 2020)For the stable operation of the shipboard hybrid DC power systems, the DC bus voltage should be controlled within the recommended range by the regulations. However, the challenge comes from the load variations, and it makes ... -
Decarbonizing bulk shipping combining ship design and alternative power
(Peer reviewed; Journal article, 2022)The Sixth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC) stresses the urgency to rapidly reduce global Greenhouse Gas (GHG) emissions to contain global warming. The main focus in the design of ... -
A Decentralized Droop-Based Power Management System for Ship Power Systems Using Hybrid Dynamical Systems Framework
(Chapter, 2023)In maritime transport, inspired by the automobile sector, autonomy is gaining traction in parallel with decarbonization. One of the numerous challenges in realizing fully autonomous operation in shipping is to design a ... -
Decision Models related to Ageing and Life Extension
(Master thesis, 2011)Ageing is a process in which the characteristics of a Structure, System or Component (SSC) gradually change with time or use. Several installations tied to the Norwegian petroleum industry are ageing. They have reached ... -
Decision Support for Conceptual Ship Design with Focus on a Changing Life Cycle and Future Uncertainty
(Doctoral thesis at NTNU;, Doctoral thesis, 2016)To better prepare for a changing world, both regarding expected events and unforeseen incidents, flexible design solutions should be considered when projects with a long lifetime and significant investment costs are ... -
Decision support for future proof ship fuel selection - Moving beyond cost-efficiency
(Master thesis, 2022)Rundt 80% av verdenshandelen etter volum og over 70% av verdi fraktes til sjøs. Global skipsfart over dype hav sikrer den mest kostnadseffektive transporten av import og eksport av mat og produserte varer og har en betydelig ... -
Decision support for renewal and retrofitting of the fleet of offshore supply vessels to guide the transition towards zero-emission logistics
(Master thesis, 2023)Denne masteroppgaven introduserer en matematisk model som løser det maritime flåte fornyelse problemet med et fokus på utslippskutt av CO_2 for forsyningsskip. Modellens primære mål er å veilede skipsredere om optimal ... -
Decision Support for The Optimal Placement of Battery Swapping Stations for High Speed Passenger Vessels
(Master thesis, 2022)Både de maritime næringene og offentlig transportsektor sikter seg inn på en fremtid med lavere og til slutt null utslipp fra deres operasjoner. Med hurtigbåter som en av de største bidragsyterene til klimagassutslipp fra ... -
Decision support model for evaluating the use of small scale automation in shipbuilding
(Master thesis, 2015)Exposure to high labour costs made most Norwegian OSV shipyards outsource the labour intensive parts of production, focusing mainly on the outfitting phases. However, improvements in robotics have enabled the shipbuilding ... -
Decision-making for Dynamic Positioning Operations in the Offshore Industry – A Human Factors based Approach
(Doctoral theses at NTNU;2020:311, Doctoral thesis, 2020) -
Decision-Making Support for Reeled Pipeline Installation Using a Machine Learning Based Method
(Chapter, 2023)Installation of subsea pipelines used for transportation of hydrocarbons, water, or CO2, is carried out by ship-type installation vessels, which are highly sensitive to wave conditions. The prediction of installation loads ... -
Decisions and decision support for major accident prevention in the process industries
(Journal article, 2015)Decision making is a central component in the management of safety-critical operations. Some attempts have been made to employ Quantitative Risk Analysis as input to such decisions. Although adequate for long-term planning ... -
DECRIS - Risk and Decision Systems for Critical Infrastructures. Metode og verktøy for en samlet risikovurdering av kritiske infrastrukturer
(SINTEF Rapport;, Research report, 2009)Prosjektet DECRIS er finansiert av Norges forskningsråd under SAMRISK-programmet. Det er et samarbeidsprosjekt mellom SINTEF, FFI og NTNU. Prosjektet har utviklet og tilpasset metoder for risikovurdering for kritisk ... -
Deep Learning for Station Keeping of AUVs
(Master thesis, 2019)Denne oppgaven undersøker mulighetene for å anvende maskinlæring, mer spesifikt dyp læring, for å holde et autonomt undervannsfartøy i en fast ønsket posisjon (eng: station keeping). Dette er en videreføring av forarbeidet ... -
Deep Learning Metocean Simulation and its Applications in Marine Simulation-based Design
(Master thesis, 2018)The objective of the master's thesis was to validate the quality of deep learning models as stochastic metocean generators and practicality in the context of simulation-based design. The availability and quality of metocean ... -
Deep Reinforcement Learning Based Controllers In Underwater Robotics
(Master thesis, 2018)This thesis investigates the possibility of creating a controller for a Remotely Operated Vehicle (ROV) using deep neural networks, optimized by either of the model-free reinforcement learning algorithms Deep Deterministic ... -
Deep Reinforcement Learning Based Parameter Optimisation for Installation Analysis of Marine Cables
(Master thesis, 2023)Masteroppgaven "Deep Reinforcement Learning basert parameter optimalisering for installasjonsanalyse av sjøkabler" utforsker anvendelsen av deep reinforcement learning (RL) teknikker innen marin kybernetikk. Målet med denne ... -
Deep Reinforcement Learning based tracking behavior for underwater vehicles
(Master thesis, 2018)This thesis introduces the use of Machine Learning, specifically Reinforcement Learning, to create a model-free tracking property for Remotely Operated Vehicles (ROV). In detail, the ROV is trained by a RL algorithm to ... -
Deep Sea Mining: Towards Conceptual Design for Underwater Transportation
(Chapter, 2020)This paper presents the first steps towards conceptual design for the underwater transportation of minerals from seabed to shore for deep sea mining (DSM). The methodology is based on conceptual design using a systematic ... -
Deep water ocean surface modelling with ship simulation
(Master thesis, 2011)The scope of this work is to implement a realistic looking ocean simulator with a ship floating on the surface. Foam, and ship wake is included to add to the realism. The application is designed to run on a normally equipped ...