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Optimization of periodic inspection time of sis subject to a regular proof testing
(Chapter, 2018)Periodic testing is a method to ascertain the availability of Safety Instrumented Systems (SIS). These systems are generally passive and are activated only on demand. Testing is then required to diagnose their current state ... -
Optimization of recertification intervals for PSV based on major accident risk
(Journal article, 2016)Overpressure is a major hazard in the process industry with the potential to lead to a major accident. Pressure Safety Valves (PSVs) are often used as the last layer of protection against such a hazard and require regular ... -
Optimization of Sample Size for Two-Point Diameter Verification in Coordinate Measurements
(LNEE;volume 484, Journal article; Peer reviewed, 2019)This paper investigates the possibility for reduction of sample size for inspection of two-point diameters with a coordinate measuring machine, by use of statistical methods. The statistical methods implement the parametric ... -
Optimize Operations and Future Development on Multi-Purpose Tana Beles Hydropower Project
(Master thesis, 2016)Abstract Different projects in Tana-Beles basins were identified as water resource development project and implemented to attain the country s development goals. One of these projects is Tana-Beles multipurpose hydropower ... -
Optimize Resistance to buckling under external hydrostatic Pressure of thin walled Composite Tubes
(Master thesis, 2014)Composite tubes are a very good alternative to steel tubes in applications requiring low weight and high stiffness. For composite tubes to replace traditional steel tubes in demanding environments, such as in the subsea ... -
Optimizing condition monitoring for dynamic health and risk management
(Doctoral theses at NTNU;2021:74, Doctoral thesis, 2021)This Ph.D. thesis explains the concepts of condition monitoring and associated challenges in maintenance modeling for subsea facilities. Thesis’s main objective is to develop systematic frameworks to assess the performance ... -
Optimizing Leather Cutting Process in Make-to-Order Production to Increase Hide Utilization
(Chapter, 2018)The growing trend of customization in the leather furniture industry has increased the need for many companies to switch from Make-To-Stock (MTS) to Make-To-Order (MTO) strategy. The shift to high-mix and low-volume presents ... -
Optimizing operations and network communications for oceanographic monitoring systems
(Master thesis, 2020)This thesis is concerned about oceanographic monitoring systems and the optimization of their operations, especially their network communications. Three research questions have been discussed, focusing them on the ... -
Optimizing Rated Wind Speed for Offshore Wind Turbines Based on the Remaining Useful Life
(Master thesis, 2021)This report covers the statistical and experimental methods needed to estimate the RUL of a roller bearing and how to calculate and minimize the maintenance cost for OWT with respect to the bearings. An experiment is ... -
Optimizing the Inspection Schedule of an Offshore Wind Turbine with Reinforcement Learning
(Master thesis, 2023)Denne rapporten søker å utforske hvordan forsterket læring (RL) kan anvendes til å redusere vedlikeholdskostnader for offshore vindturbiner. Den valgte tilnærmingen er å optimalisere inspeksjonsplanleggingen, og å utforske ... -
Optimum Maintenance Strategy Recommendation of Compressor Based on OREDA Failure Rate
(Master thesis, 2023)Grunnleggende vedlikeholdsintervall i olje- og gasselskaper er kanskje ikke så godt undervist. Som en kommende doktorgradsstudent er dette grunnleggende kalkulerende vedlikeholdsintervallet fra historiske data levert av ... -
Order Release in Mass Customization; Can Card-Based Production Planning and Control systems be used?
(Master thesis, 2019)I denne masteroppgaven undersøkte jeg bruken av fire Production Planning and Control (PPC) systemer, nemlig KANBAN, CONWIP, POLCA og COBACABANA, og deres applikasjon til Mass Customization (MC) produksjon. Denne formen for ... -
Organisatorisk sikkerhet i Helgeland Kraft
(Master thesis, 2023)Denne masteroppgaven er skrevet for Helgeland Kraft AS med hovedtema innenfor organisatorisk sikkerhet. Oppgaven ønsket å finne svar på to forskningsspørsmål; «Hvilke organisatoriske misforhold som kan avdekkes gjennom ... -
Organizational Learning and Knowledge in the Norwegian Automotive Supplier Industry
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:160, Doctoral thesis, 2010)This study contributes to the understanding of how product and process development processes may become more effective, and provide increased competiveness, for suppliers in the Norwegian automotive industry. This industry ... -
Organizing, thinking and acting resiliently under the imperative of compliance On the potential impact of resilience thinking on safety management and risk consideration
(Doctoral thesis at NTNU;2015:86, Doctoral thesis, 2015)Background Industrial safety is a discipline in which technical perspectives and issues prevail to the extent that also the treatment of human and organizational issues often is biased by technical language and concepts. ... -
Orthotropic fluid diffusion in composite marine structures. Experimental procedure, analytical and numerical modelling of plates, rods and pipes
(Journal article; Peer reviewed, 2018)Finite elements simulations of fluid diffusion for composite structures are becoming more common in marine and offshore applications. Input parameters for such simulations are the orthotropic diffusion constants for the ... -
The osteogenic properties of additive manufactured Titanium-6Aluminium-4Vanadium with focus on 3D geometry and surface topography
(Doctoral theses at NTNU;2023:77, Doctoral thesis, 2023) -
Osteoporosis and Covid-19: Detected similarities in bone lacunar-level alterations via combined AI and advanced synchrotron testing
(Peer reviewed; Journal article, 2023)While advanced imaging strategies have improved the diagnosis of bone-related pathologies, early signs of bone alterations remain difficult to detect. The Covid-19 pandemic has brought attention to the need for a better ... -
Overcoming Barriers for Sustainable Project Management
(Master thesis, 2021)The interest on the sustainability concept has boomed significantly and the organizations worldwide are now trying to incorporate the sustainability principles in their businesses. This has been propelled due to the climate ... -
Overcoming sustainability barriers in facilities management by a project management framework for project governance
(Peer reviewed; Journal article, 2023)The world needs to transform in sustainable ways, in large part due to the environmental hazards caused by and negative effects of the architecture, engineering and construction (AEC) industry. The AEC industry, including ...