Blar i Institutt for marin teknikk på tittel
Viser treff 2751-2770 av 3436
-
Risk management of autonomous marine systems and operations
(Chapter; Peer reviewed, 2017)Autonomous systems may lead to smarter and more efficient operations, but emerging risks are involved, because of lack of knowledge and operational experience with such systems, and challenges related to verification of ... -
Risk Model applied to Non-operational Hydrocarbon Leaks on Offshore Installations - Causal modeling of hydrocarbon leaks caused by technical degradation and design error with the use of risk-influencing factors
(Master thesis, 2015)This project proposes a risk model for identifying causal factors of hydrocarbon (HC) leaks on offshore installations and estimating the platform-specific frequency of HC leaks. The central concern is non-operational leaks ... -
Risk modeling of autonomous underwater vehicle operation focusing on the human operator
(Chapter, 2015)Autonomous Underwater Vehicles (AUVs) are used in scientific, commercial and military organizations to conduct surveys and follow a preprogrammed mission path through the oceans. If a fault or an unexpected deviation from ... -
Risk Modeling of DP Operation for Offshore Tandem Offloading
(Master thesis, 2016)The paper proposes a risk model to warn shuttle tanker drive-off previously and detect it punctually, and proposes a risk decision support model to generate, evaluate and select a best vessel maneuvering plan to avoid the ... -
Risk Modelling of Collisions between Passing Vessels and Fish Farm Facilities - A Development of a Frequency Model
(Master thesis, 2018)The aim of this master's thesis is to develop a model that is tailored to estimate the frequency of a collision between a powered passing vessel and a fish farm facility. The aquaculture industry is expected to grow, which ... -
Risk of collision between service vessels and offshore wind turbines
(Journal article; Peer reviewed, 2013)Offshore wind farms are growing in size and are situated farther and farther away from shore. The demand for service visits to transfer personnel and equipment to the wind turbines is increasing, and safe operation of the ... -
The risk of individual fish being captured multiple times in a catch and release fishery
(Peer reviewed; Journal article, 2019)The proportion of angled Atlantic salmon Salmo salar L. being caught and released has increased. If individuals are repeatedly captured, this may have fish welfare consequences. Of 995 Atlantic salmon tagged during catch ... -
Risk Reduction for Floating Offshore Installations Through Barrier Management
(Chapter; Peer reviewed, 2015)Marine system accidents have a relatively high frequency worldwide. In Norwegian waters loss of installations has been avoided the last 20 years, but several near-misses and severe incidents confirm that the risk level is ... -
Risk-Based Control of Autonomous Surface Ship
(Doctoral theses at NTNU;2024:174, Doctoral thesis, 2024)The last few decades have seen tremendous technological development in the maritime industry. Improvements in navigation systems such as Global Navigation Satellite Systems have reduced measurement error and uncertainty ... -
Risk-based decision-making support model for offshore dynamic positioning operations
(Journal article; Peer reviewed, 2021)A Dynamic Positioning (DP) system enables vessels and rigs to accurately maintain a predetermined position and heading or track. It enables precise operations under harsh environmental conditions. DP is used for a variety ... -
Risk-Based Design Methodology for an Ice-Classed Multipurpose OSV
(Master thesis, 2013)According to US Geology Survey of 2009, 30 % of the world s undiscovered gas and 13% of the world s undiscovered oil may be located in the Arctic area. Due to a high demand for energy resources and a reduction trend in the ... -
Risk-Based Stability Assessment for Semi-Submersible Platforms: Ballast System Failure
(Master thesis, 2013)Stability and buoyancy loss is a very current problem for semi-submersible platforms. New ballast system designs are developed to improve the safety of personnel and facility, but the effect of these is difficult to measure ... -
Risk-based supervisory control for autonomous ship navigation
(Peer reviewed; Journal article, 2023)This paper proposes a novel method to transform the results of qualitative risk analysis into a numeric optimal control problem for autonomous ship navigation. Today, making autonomous high-level decisions replacing a crew ... -
Risk-Influenced Path Planning based on Online Risk Analysis, Bayesian Networks and the A* Path Planning Algorithm
(Master thesis, 2019)Arbeidet presentert i denne masteroppgaven forsøker å bidra til kunnskapsgrunnlaget for autonome marine fartøy ved å tilby forslag til funksjonalitet i et autonomt fartøys kontrollarkitektur. Funksjonaliteten er basert på ... -
Risk-informed control systems for improved operational performance and decision-making
(Peer reviewed; Journal article, 2021)Autonomous systems, including airborne, land-based, marine, and underwater vehicles, are increasingly present in the world. One important aspect of autonomy is the capability to process information and to make independent ... -
Risk-related information needed through the planning process for offshore activities
(Journal article; Peer reviewed, 2018)Planning and plan quality influence safe and efficient execution of work in offshore oil and gas activities. An important basis for developing good plans and making good decisions during the planning process is to have the ... -
Robust and Reconfigurable On-Board Processing for a Hyperspectral Imaging Small Satellite
(Peer reviewed; Journal article, 2023)Hyperspectral imaging is a powerful remote sensing technology, but its use in space is limited by the large volume of data it produces, which leads to a downlink bottleneck. Therefore, most payloads to date have been ... -
A Robust Circuit and Controller ParametersIdentification Method of Grid-Connected VoltageSource Converters Using Vector Fitting Algorithm
(Peer reviewed; Journal article, 2021)This article presents a vector fitting (VF) algorithmbased robust circuit and controller parameters identification method for grid-connected voltage source converters (VSCs). The dq-domain impedance frequency responses ... -
Robust Dynamic Positioning of offshore vessels using mixed-μ synthesis modeling, design, and practice
(Journal article, 2017)This paper describes a procedure to design robust controllers for Dynamic Positioning (DP) of ships and offshore rigs subjected to the influence of sea waves, currents, and wind loads using H∞ and mixed-μ techniques. The ... -
Robust hybrid retningsstyring for autonome skip
(Master thesis, 2019)I de senere år har det vært økt interesse for styringssystemdesign og veiledning av autonome fartøy. Etter hvert som kompleksiteten i disse systemene øker, er det stor etterspørsel etter å designe robuste systemer som ...