Browsing Fakultet for ingeniørvitenskap (IV) by Title
Now showing items 12093-12112 of 23180
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Joint maintenance and controller reconfiguration policy for a gradually deteriorating control system
(Journal article, 2017)This paper tackles the maintenance decision-making of gradually deteriorating control systems. The main feature of these systems is their ability within a closed-loop to drive actuators in order to set the controlled process ... -
Joint Maintenance Interval and Spare Parts Optimization using a Discrete-Event Simulation Model
(Master thesis, 2015)The goal of this report is to use discrete-event simulation (DES) as a method for optimizing maintenance strategies, such as spare parts levels and maintenance intervals. Firstly, the au- thor argues for spare parts ... -
Joint Optimization of Oil Well Placement and Controls
(Journal article; Peer reviewed, 2012)Well placement and control optimization in oil field development are commonly performed in a sequential manner. In this work, we propose a joint approach that embeds well control optimization within the search for optimum ... -
Joint optimization of performance-based contracting, condition-based maintenance and spare parts inventory for degrading production systems
(Journal article; Peer reviewed, 2024)As a novel supporting approach, performance-based contracting (PBC) ties the service supplier’s compensation to the performance outcome of the system owned by the customer. It enables the service supplier to implement an ... -
Joint Optimization of Well Placement and Controls for Petroleum Field Development
(Doctoral thesis at NTNU;2014:369, Doctoral thesis, 2014)In this thesis we optimize the drilling location and operational controls of wells in a joint manner to improve the overall development strategy for a petroleum field. In particular, in this thesis we treat the integrated ... -
Joint Probability Distribution of Environmental Conditions for Design of Offshore Wind Turbines
(Chapter; Peer reviewed, 2017)The design process for offshore wind turbines includes a fatigue life evaluation of the structure with the relevant environmental conditions at the specified wind farm location. Such analyses require long-term distributions ... -
Joint Rock Physics Inversion of Seismic and Electromagnetic Data for CO2 Monitoring at Sleipner
(Master thesis, 2018)The Carbon Capture and Storage project that is taking place at the Sleipner field involving the injection of CO2 into Utsira sandstone reservoir at 1012 m below sea level. The migration of CO2 must be monitored to understand ... -
Joint well-placement and well-control optimization for energy-efficient water flooding of oil fields
(Journal article; Peer reviewed, 2023)Hydrocarbon production driven by water flooding is energy-intensive. This paper presents well-placement and joint well-placement-and-control optimization studies with objective function taking into account emissions, ... -
Jordfeil i ROV-Umbilical: Effekten av Statisk og Dynamisk lastkarakteristikk
(Master thesis, 2013)DOF Subsea innehar en rekke ROV-systemer plassert på ulike fartøy rundt om i verden. Det er ønskelig at disse systemene skal ha høyest mulig tilgjengelighet, slik at undervannsoperasjoner kan gjennomføres uten at feil på ... -
Jordmodeller og utmatning av fritthengende stigerør
(Master thesis, 2016)Denne masteravhandlingen omhandler utvikling og anvendelse av jordmodeller for beskrivelse av jord-stigerør interaksjon. På dypt vann, er jorda bestående av leire noe som introduserer sensitive parameterer. Det gjør ... -
Jordskjelv analyse av konstruksjoner på peler ved modal superposisjon, og ved forenklede metoder
(Master thesis, 2016)Det finnes flere ulike metoder for å gjøre seismisk dimensjonering. De vanligste metodene innebærer en del forenklinger. Eurokodens forenklede metode (tverrkraftmetoden) blir veldig ofte brukt, også for mellomstore bygg. ... -
Jordskjelvberegning i henhold til Eurokode 8 og PLAXIS 2D
(Master thesis, 2015)Denne oppgaven tar for seg bruk av numeriske analyser med elementprogrammet PLAXIS 2D som er brukt til jordskjelvberegninger for tre ulike modeller. Hensikten er å undersøke hvordan dette korresponderer med Eurokode 8, ... -
Jordskjelvrespons av spunt
(Master thesis, 2013)Kollaps av støttekonstruksjoner på grunn av jordskjelv kan føre til store skader. Det er derfor et behov for pålitelige dimensjoneringsmetoder for slike konstruksjoner. Denne oppgaven tar for seg bruk av numeriske analyser ... -
Jordskjelvrespons av vindturbiner med jord-struktur-interaksjon
(Master thesis, 2013)I denne rapporten er det evaluert jordskjelvrespons for en vindturbin fundamentert med bøttefundament. Ved hjelp av elementprogrammet Abaqus CAE er det etablert en elementmodell av systemet, som inneholder jord, bøttefundament ... -
Jordskjelvsdesign etter Eurokode 8-1 for typiske norske konstruksjoner: Stålkonstruksjoner
(Master thesis, 2012)Vurdering av jordskjelv under prosjektering av nye konstruksjoner er relativt nytt i Norge. I 2004 ble jordskjelvstandarden NS 3491-12 utgitt som en overgangsstandard til Eurokode 8-1 som ble gjeldende fra våren 2010. Det ... -
Jordskredkartlegging 2011 og 2013 i Veikledalen, Nord-Fron kommune
(Master thesis, 2014)Vert endra seinare -
The Journey Towards World Class Maintenance with Profit Loss Indicator
(Chapter, 2019)To have a maintenance function in the company that ensures a competitive advantage in the world market requires the world class maintenance (WCM). Though several different periods in history, maintenance has shifted from ... -
Judging the Generalized Newtonian Fluid assumption for cuttings transport modelling by applying time scale comparisons
(Chapter, 2018)Cellulose (PAC) solutions are often employed as drilling fluid model systems in experimental laboratory studies to investigate cuttings transport. For this purpose, PAC solutions are typically assumed to behave purely ... -
Judgments at Gaze Value: Gaze Cuing in Banner Advertisements, Its Effect on Attention Allocation and Product Judgments
(Journal article; Peer reviewed, 2017)Banner advertising is a popular means of promoting products and brands online. Although banner advertisements are often designed to be particularly attention grabbing, they frequently go unnoticed. Applying an eye-tracking ... -
Jurassic Reservoir Distribution and Environment of Deposition across Eastern Part of Johan Sverdrup Field, South Viking Graben, North Sea
(Master thesis, 2014)The South Viking Graben (SVG) is an asymmetric graben located in the Northern North Sea has been the focus for oil exploration for many years. The SVG includes hydrocarbon plays of Triassic age, Jurassic, Paleocene and ...