Browsing NTNU Open by Document Types "Preprint"
Now showing items 1-20 of 40
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A DBN-based risk assessment model for prediction and diagnosis of offshore drilling incidents
(Journal article; Preprint, 2016)Drilling operations of offshore oil and gas fields are characterized by high technical complexity, high risks, and high costs, since they are always in harsh environments with complicated geological factors. Lost circulation ... -
A spot-forward model for electricity prices with regime shifts
(Journal article; Preprint; Peer reviewed, 2014)We propose a novel regime-switching approach for electricity prices in which simulated and forecasted prices are consistent with currently observed forward prices. Additionally, the model is able to reproduce spikes and ... -
An estimation-forecast set-up for iceberg drift prediction
(Journal article; Preprint, 2016)Iceberg drift forecasting is challenging. Large uncertainties in iceberg geometry and in iceberg driving forces – current, wind and waves – make accurate forecasts difficult. In this work, a new estimation-forecast scheme ... -
Backing out Expectations from Hydropower Release Time Series
(Conference object; Journal article; Preprint, 2017)Our goal is to study how price expectations are formed in an electricity market. In the context of a single hydropower producer in the Nordic market, we expect the forward curve to have a strong influence. The alternative ... -
Big Data in Construction Management Research
(Report / Tampere University of Technology, Department of Civil Engineering, Construction Management and Economics;, Chapter; Conference object; Preprint, 2016) -
Challenges and prospects in genome wide QTL mapping of standing genetic variation in natural populations.
(Preprint, 2014)A considerable challenge in evolutionary genetics is to understand the genetic mechanisms that facilitate or impede evolutionary adaptation in natural populations. For this, we must understand the genetic loci contributing ... -
Design and Comparison of Constrained MPC with PID Controller for Heave Disturbance Attenuation in Offshore Managed Pressure Drilling Systems
(Journal article; Preprint, 2014)This paper presents a constrained finite horizon model predictive control (MPC) scheme for regulation of the annular pressure in a well during managed pressure drilling from a floating vessel subject ... -
Effect of CO2 Exposure on the Chemical Stability and Mechanical Properties of BaZrO3‐Ceramics
(Journal article; Preprint, 2016) -
Emotional, physical, and sexual abuse and the association with symptoms of depression and posttraumatic stress in a multi-ethnic pregnant population in southern Sweden
(Journal article; Preprint, 2016)Objectives: This study aims to describe the prevalence of emotional, physical, and sexual abuse and analyze associations with symptoms of depression and posttraumatic stress (PTS) in pregnancy, by ethnic background. Study ... -
Flexible truncation method for the reliability assessment of phased mission systems with repairable components
(Journal article; Preprint, 2016)Phased-mission systems (PMS) are the system in which the component stresses and the system configuration may change over time. Real-world PMS usually consist of a large number of repetitive phases and repairable components. ... -
"I enjoyed using SRS in the classroom" - A research study of Student Response System in Norwegian classes and in further education of language teachers in Norway
(Chapter; Conference object; Preprint, 2013)This paper describes a small scale pilot study leading to the inclusion of a student response system (SRS) as part of the curriculum in a further education course for language teachers. It also presents how the language ... -
Interspecific analysis of vehicle avoidance behaviour in birds
(Preprint, 2014)Among the most widespread forms of anthropogenic modification of the natural landscape is road construction, with vehicle mortality a major issue affecting amphibians, reptiles, mammals, and birds. Why some species are ... -
Mathematical modelling of a nordic hydrological system, and the use of a simplified run-off model in the stochastic optimal control of a hydroelectrical power system
(5th Conference on Optimization Techniques Part II;, Chapter; Conference object; Preprint, 1973) -
Med blanke ark og lydopptak - elevens egen stemme om komponering i skolens musikkopplæring
(Peer reviewed; Preprint, 2011-03-28)Artikkelen fokuserer på elevenes egne opplevelser omkring komposisjon i skolens musikkopplæring. Komposisjon i skolen drøftes i lys av de rammene vi finner i ”Læreplanverket for Kunnskapsløftet” (LK06). Et sentralt spørsmål ... -
Milling plant and soil material in plastic tubes over-estimates carbon and under-estimates nitrogen concentrations
(Journal article; Preprint, 2013)Background and aims Milling of plant and soil material in plastic tubes, such as microcentrifuge tubes, over-estimates carbon (C) and under-estimates nitrogen (N) concentrations due to the introduction of polypropylene ... -
Modelling of DC-DC converters based on front-to-front connected MMC for small signal studies
(Chapter; Conference object; Preprint, 2016)The Multi-terminal DC grid is expected to be built incrementally by interconnecting existing HVDC installations. In doing so, an enabling component is the DC-DC converter which also plays the role of a power flow controller. ... -
Moving Toward the Circular Economy: The Role of Stocks in the Chinese Steel Cycle
(Journal article; Preprint, 2012)As the world’s largest CO2 emitter and steel producer, China has set the ambitious goal of establishing a circular economy which aims at reconciling economic development with environmental protection and sustainable resource ... -
Når ordet blir vold: retorikk og terror i Saint-Justs politiske taler
(Chapter; Preprint, 2016) -
On small satellites for oceanography: A survey
(Journal article; Preprint, 2016)The recent explosive growth of small satellite operations driven primarily from an academic or pedagogical need, has demonstrated the viability of commercial-off-the-shelf technologies in space. They have also leveraged ... -
Order and dissent among Old Colony Mennonites: a regime of embedded sovereignty
(Chapter; Preprint, 2009)Permutations of Order makes an innovative and important contribution to current discussions about the relationship between religion and law, bringing together theoretically informed case studies from different parts of the ...