Browsing Fakultet for ingeniørvitenskap (IV) by Title
Now showing items 21634-21653 of 22998
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Uncertainty analysis of the hydrodynamic coefficients estimation of a nonlinear manoeuvring model based on planar motion mechanism tests
(Journal article; Peer reviewed, 2019)Uncertainty analysis of the identified hydrodynamic coefficients of a nonlinear manoeuvring model is presented in this paper. The classical parameter estimation method, Least Square, is briefly introduced, and the uncertainty ... -
Uncertainty analysis of tunnel squeezing for two tunnel cases from Nepal Himalaya
(Journal article; Peer reviewed, 2007)Weak rocks such as shale, slate, phyllite and schist, and the rock mass of weakness/fault zones are incapable of sustaining high tangential stress. Severe tunnel squeezing is therefore common in the tectonically active ... -
Uncertainty and risk assessment of leakage in water tunnels - a case from Nepal Himalaya
(Proceedings: World Tunnel Congress 2008;, Research report, 2008)Safety and stability are the key issues in underground excavations. Making tunnels water tight plays an important role in this regards. Water leakage problems in unlined or shotcrete lined water tunnels are not new issues. ... -
Uncertainty and sensitivity analysis for the performance evaluation of ship dynamical model
(Chapter, 2022)Model uncertainty is pervasive and inherent in the engineering field. It could bring potential risks in real applications, especially for ship behaviour prediction under environmental disturbances. The evaluation and ... -
Uncertainty Assessment of Wave Loads and Ultimate Strength of Tankers and Bulk Carriers in a Reliability Framework
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:143, Doctoral thesis, 2010)The main aim of the research work in this thesis is to investigate the uncertainty of wave-induced loads and ultimate strength of tankers and bulk carriers in a reliability framework. The ship structure is generally designed ... -
Uncertainty assessment of wave- and current-induced global response of floating bridges - A numerical investigation
(Doctoral theses at NTNU;2020:126, Doctoral thesis, 2020)Floating pontoon bridge concepts have proven to be useful for crossing very deep and wide waters where conventional bridge types are not feasible, and different concepts have been built in several locations around the world ... -
Uncertainty assessments of structural loading due to frst year ice based on the ISO standard by using Monte-Carlo simulation
(Peer reviewed; Journal article, 2020)Sea ice is the major source of loading for structural design in cold regions. The intrinsic properties of sea ice are generally associated with high degrees of uncertainty due to ice growth taking place during different ... -
Uncertainty in Calibration of Reference Standards for Dimensional Measurements
(Master thesis, 2019)Målelaboratoriet ved NTNU brukes til å kalibrere normaler (eng: reference standards) som brukes av Justervesenet for å verifisere andre måleinstrumenter. Normaler, som rektangulære parallellepiped og sylindere, blir kalibrert ... -
Uncertainty in CCTV sewer inspection data - a case study from Trondheim, Norway
(Master thesis, 2020)Avløpssystemet er en kritisk infrastruktur som benytter kamerainspeksjoner (CCTV) til å samle data som brukes til å foreta beslutninger om rehabiliterings- og utskiftningsstrategier som utgjør betydelige kostnader. Dataene ... -
Uncertainty in multiphase flow estimates for a field development case
(Master thesis, 2013)Commercial multiphase flow simulators typically give one value for each output parameter simulated in a pipeline. Field development project managers want to know the uncertainty in these predictions in order to assess the ... -
Uncertainty in the real-time estimation of ship speed through water
(Peer reviewed; Journal article, 2021)The ship speed through water (STW) is a critical variable for evaluation of ship performance. With a cubic relation to the expected shaft power, even small inaccuracies in measured STW amplifies to more considerable ... -
UNCERTAINTY MANAGEMENT IN PRODUCT DEVELOPMENT PORTFOLIOS: THE IMPACT OF GLOBAL SUSTAINABILITY AGENDAS
(Peer reviewed; Journal article, 2023)Increased focus on sustainability significantly impacts product development portfolio management in organizations. This paper focuses on the significant unaccommodated uncertainty caused by the green transition for current ... -
Uncertainty management of projects from the owners' perspective, with main focus on managing delivered functionality
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:197, Doctoral thesis, 2010)Projects are often claimed not to produce the effects or deliver the functionality that are expected from them. When this claim is mentioned also by the project owner and other central stakeholders, then the project is ... -
Uncertainty management of projects from the owners’ perspective, with main focus on managing delivered functionality
(Journal article, 2014)Purpose This paper aims to report on the work on a doctoral thesis studying uncertainty management of projects. The thesis was in particular studying uncertainty regarding the functionality that the project should deliver. ... -
Uncertainty modelling of pore pressure by using Monte-Carlo approach in the Hammerfest Basin, Barents Sea
(Master thesis, 2017)The results of this study suggest that: 1) The present Hammerfest Basin is neither affected by large amount of overpressure, nor there is an ongoing leakage detected, 2) the present overpressure distribution in the basin ... -
Uncertainty of full-scale manoeuvring trial results estimated using a simulation model
(Journal article; Peer reviewed, 2017)This paper describes how to estimate the uncertainty of manoeuvring sea trial results without performing repeated tests using only a simulation model. The approach is based on the Monte Carlo method of uncertainty propagation. ... -
Uncertainty of Machine Learning-Based Methods for Wave Forecast and its Effect on Installation of Offshore Wind Turbines
(Doctoral theses at NTNU;2021:325, Doctoral thesis, 2021)Marine operations, such as offshore lifting and mating, are complex and highly weather-sensitive. When planning these weather-restricted opera-tions, it is necessary to determine the response-based operational limits in ... -
Uncertainty of the allocation factors of heat and electricity production of combined cycle power plant
(Journal article; Peer reviewed, 2015)There are many different methods for the allocation of CO2 emissions in Combined Heat and Power plants. The choice of allocation method has a great effect on energy pricing and CO2 allocation in Combined Heat and Power ... -
Uncertainty propagation through a point model for steady-state two-phase pipe flow
(Peer reviewed; Journal article, 2020)Uncertainty propagation is used to quantify the uncertainty in model predictions in the presence of uncertain input variables. In this study, we analyze a steady-state point-model for two-phase gas-liquid flow. We present ... -
Uncertainty quantification and sensitivity analysis for cardiovascular models
(Doctoral thesis at NTNU;2016:234, Doctoral thesis, 2016)The major challenge for applying cardiovascular models in personalized medicine is as follows: How certain are the predictions of a cardiovascular model, taking the natural variations and measurement uncertainty of model ...