Blar i NTNU Open på forfatter "Eidsvik, Jo"
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The Value of Snow Measurements in Scheduling of Hydropower Plants
Ødegård, Heidi Liljeblad (Master thesis, 2016)The main goal of the thesis is to study the value of snow measurements in the scheduling of hydropower plants. This is done by implementing an approximative Least-Square Monte Carlo(LSMC) method to calculate the scheduling. ... -
Toward adaptive robotic sampling of phytoplankton in the coastal ocean
Fossum, Trygve Olav; Fragoso, Glaucia Moreira; Davies, Emlyn John; Ullgren, Jenny; Mendes, Renato; Johnsen, Geir; Ellingsen, Ingrid H.; Eidsvik, Jo; Ludvigsen, Martin; Rajan, Kanna (Journal article; Peer reviewed, 2019)Currents, wind, bathymetry, and freshwater runoff are some of the factors that make coastal waters heterogeneous, patchy, and scientifically interesting—where it is challenging to resolve the spatiotemporal variation within ... -
Using an autonomous underwater vehicle with onboard stochastic advection-diffusion models to map excursion sets of environmental variables
Foss, Karine Hagesæther; Berget, Gunhild Elisabeth; Eidsvik, Jo (Peer reviewed; Journal article, 2021)New robotic sensor platforms have computing resources that enable a rich set of tasks for adaptive monitoring of the environment. But to substantially augment the toolbox of environmental sensing, such platforms must be ... -
Using Hidden Markov Models for Musical Chord Prediction
Berget, Gunhild Elisabeth (Master thesis, 2017)Music is made up of a melody and chords that accompany the melody. Finding suitable chords, can be hard and time consuming. This thesis investigates the use of Hidden Markov models (HMMs) to assist in this process. The ... -
Using the Composite Likelihood Method on 4D AVA Seismic Data
Borgan, Yngve (Master thesis, 2011)This thesis is concerned with 4D AVA seismic inversion problems. By comparing two seismic surveys done over the same area, but at different times, one hopes to discover untapped pockets of oil or gas. Using the full ... -
Using the Ensemble Kalman Filter with Kernel Methods for History Matching of Petroleum Reservoirs
Vabø, Jon Gustav (Master thesis, 2008)The problem of conditioning a petroleum reservoir model to production data, so called history matching, is considered. The history matching problem is formulated within a Bayesian framework, where prior geological knowledge, ... -
Valg av eksperiment på romlige felt ved hjelp av eksperimentverdi
Opdahl, Magdalon Inge (Master thesis, 2009)Vi har i denne oppgaven satt opp et rammeverk for å sammenligne forskjellige eksperimenter på romlige felt. Eksperimentene består av en eller flere enkeltundersøkelser på det romlige feltet. Rammeverket består av en modell ... -
Value of Information Analysis for Complex Simulator Models: Application to Wind Farm Maintenance
Myklebust, Hans Olav Vogt; Eidsvik, Jo; Sperstad, Iver Bakken; Bhattacharjya, Debarun (Peer reviewed; Journal article, 2020)Many domains require the use of sophisticated simulators to adequately model the effect of chosen alternatives on the decision maker’s value. Decision support in such complex systems brings unique challenges around efficiency, ... -
Value of information analysis for subsurface energy resources applications
Dutta, Geetartha; Mukerji, Tapan; Eidsvik, Jo (Journal article; Peer reviewed, 2019)A computationally efficient method to estimate the value of information in the context of subsurface energy resources applications is proposed. The value of information is a decision analytic metric quantifying the incremental ... -
Value of information analysis in the context of leakage detection in CO2 storage
Scott William Christopher Bunting (Master thesis, 2019)Karbonfangst og -lagring er en lovende strategi for å redusere utslipp av CO2 til atmosfæren og i disse tider forberedes et fullskala prosjekt i Norge. CO2 vil bli injesert i dype geologiske formasjoner, og blant stedene ... -
Value of information analysis of snow measurements for the scheduling of hydropower production
ødegaard, heidi; Eidsvik, Jo; Fleten, Stein-Erik (Journal article; Peer reviewed, 2017)The scheduling of a hydropower plant is challenging because of inflow uncertainty. During spring there is increased uncertainty when the snow melts. By gathering snow measurements, one learns more about the future inflow, ... -
Value of information of in-situ inspections of mooring lines
Mendoza Espinosa, Jorge; Paglia, Jacopo; Eidsvik, Jo; Kohler, Jochen (Peer reviewed; Journal article, 2021)Mooring systems that are used to secure position keeping of floating offshore oil and gas facilities are subject to deterioration processes, such as pitting corrosion and fatigue crack growth. Past investigations show that ... -
Value of information of time-lapse seismic data by simulation-regression: comparison with double-loop Monte Carlo
Dutta, Geetartha; Mukerji, Tapan; Eidsvik, Jo (Peer reviewed; Journal article, 2019)Simulation-regression is a computationally efficient methodology to estimate the value of information (VOI), as it involves directly estimating the value outcomes corresponding to different data realizations by building a ... -
Workflow for Sensitivity Analysis and Decision Making on the Lower Limit of the Mud-Weight Window in an Overpressured Formation
Paglia, Jacopo; Eidsvik, Jo; Cerasi, Pierre (Peer reviewed; Journal article, 2020)When drilling a well it is important to choose a reasonable mud density to ensure safe operations. This is not a trivial task because a balanced mud-weight has a complex relation to the uncertain formation conditions and ...