Faculty of Science and Technology: Recent submissions
Now showing items 621-640 of 7331
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Identification of the flux function of nonlinear conservation laws with variable parameters
(Peer reviewed; Journal article, 2023-09)Machine learning methods have in various ways emerged as a useful tool for modeling the dynamics of physical systems in the context of partial differential equations (PDEs). Nonlinear conservation laws (NCLs) of the form ... -
A new variational discretization technique for initial value problems bypassing governing equations
(Peer reviewed; Journal article, 2023-03)Motivated by the fact that both the classical and quantum description of nature rest on causality and a variational principle, we develop a novel and highly versatile discretization prescription for classical initial value ... -
Rheological Compatibility of a Hardening Spacer Fluid and Oil-based Drilling Fluid
(Peer reviewed; Journal article, 2023-08)In the placement process of the cement slurry, treatment fluids such as the spacer are pumped ahead of the cementitious slurry to minimize the contamination of the slurry by drilling fluid and ensure superior bonding to ... -
Trojan Spoofing: A Threat to Critical Infrastructure
(Peer reviewed; Journal article, 2023)This article explores the phenomenon of location spoofing – where the spoofer is able to ‘teleport’ systems in and out of defined locations, either for the purpose of infiltration into no-go zones or for the ‘teleportation’ ... -
Structural identifiability of biomolecular controller motifs with and without flow measurements as model output
(Peer reviewed; Journal article, 2023-08)Controller motifs are simple biomolecular reaction networks with negative feedback. They can explain how regulatory function is achieved and are often used as building blocks in mathematical models of biological systems. ... -
cdem: A macOS program for discrete element modeling of tectonic structures
(Peer reviewed; Journal article, 2023-08)cdem is a macOS document-based application for two-dimensional discrete element modeling of tectonic structures and their associated deformation. Documents encapsulate simulations that can be run and explored simultaneously. ... -
Identification of diagnostic and prognostic biomarkers of PD using a multiplex proteomics approach
(Peer reviewed; Journal article, 2023-10)Given the complexity of Parkinson's disease (PD), achieving acceptable diagnostic and prognostic accuracy will require the support of a panel of diverse biomarkers. We used Proximity extension assays to measure a panel of ... -
Optimizing support vector machines and autoregressive integrated moving average methods for heart rate variability data correction
(Peer reviewed; Journal article, 2023-09)Heart rate variability (HRV) is the variation in time between successive heartbeats and can be used as an indirect measure of autonomic nervous system (ANS) activity. During physical exercise, movement of the measuring ... -
Factors affecting user’s risk perception and precautionary behavior when using Fintech: a comparison of Norway-a developed country, and Vietnam- a developing country.
(Master thesis, 2023)Financial technology (known as Fintech) is one of the most prominent trends in the global industrial revolution 4.0. It refers to innovative technology that aims to enhance and automate the delivery and usage of financial ... -
Zonal Isolation Material for Low-Temperature Shallow-Depth Application: Evaluation of Early Properties Development
(Peer reviewed; Journal article, 2023)Shallow-depth cementing presents unique challenges due to its low temperature and low pore pressure characteristic. The curing process of the cementitious material is typically prolonged at low temperatures resulting in a ... -
A Second-Order Finite Volume Method for Field-Scale Reservoir Simulation
(Peer reviewed; Journal article, 2023-08)Subsurface reservoirs are large complex systems. Reservoir flow models are defined on complex grids that follow geology with relatively large block sizes to make consistent simulations feasible. Reservoir engineers rely ... -
Distinct Clades of Protein Phosphatase 2A Regulatory B’/B56 Subunits Engage in Different Physiological Processes
(Peer reviewed; Journal article, 2023-07)Protein phosphatase 2A (PP2A) is a strongly conserved and major protein phosphatase in all eukaryotes. The canonical PP2A complex consists of a catalytic (C), scaffolding (A), and regulatory (B) subunit. Plants have three ... -
Numerical investigation on blast-induced rock fragmentation with different stemming structures
(Peer reviewed; Journal article, 2023-09)Stemming is one of the main concerns in blast of rock engineering due to its impact on explosion energy consumption and rock excavation performance. In this study, blast-induced rock fragmentation under different stemming ... -
Use of response forecasting in decision making for weather sensitive offshore construction work
(Peer reviewed; Journal article, 2023)Response forecasting is an emerging technology for supporting decision-making during offshore construction work. The method aims to improve the reliability and efficiency of weather-sensitive operations. This article ... -
Phosphonated Iminodisuccinates-A Calcite Scale Inhibitor with Excellent Biodegradability
(Peer reviewed; Journal article, 2023-01)Scale inhibitors are an extremely important chemical in upstream oil and gas field operations and water treatment industries. These inhibitors prevent nucleation and/or crystal growth of scales such as calcite and barite. ... -
Modeling which Factors Impact Interest Rates
(Peer reviewed; Journal article, 2023)The Taylor (1993) rule for determining interest rates isgeneralized to account for three additional variables: The moneysupply, money velocity, and the unemployment rate. Thus, five pa-rameters, i.e. weights assigned to ... -
Two-Period Colonel Blotto Contest With Cumulative Investments Over Variable Assets With Resource Constraints
(Peer reviewed; Journal article, 2023-08)Two resource constrained players compete by investing in two assets which may increase or decrease in value over two periods. A player’s investment in period 1 carries over to period 2. If an asset is cheap in period 1, a ... -
En vurdering av nåværende praksis for risikostyring ved Aker Solutions Egersund
(Master thesis, 2023)Olje- og gassindustrien har siden begynnelsen vært kjent som en av de mest risikofylte industriene i verden, og håndterer komplekse og farlige operasjoner på daglig basis. Studier indikerer at mangel på systematisk og ... -
En analyse av Statens helsetilsyn sine tilsyn ved alvorlige hendelser: Kan bruk av SEIPS-modellen øke læringsutbyttet?
(Master thesis, 2023)Det er normalt for mennesker å gjøre feil. Noen mennesker har arbeid som gjør at feilen kan få store konsekvenser for livet til andre mennesker. Helsepersonell har et stort ansvar hvilende på skuldrene sine. Feil kan få ... -
Ammunisjonsdeponiene i Mjøsa: Usikkerhetsanalyse og diskusjon rundt prosess for usikkerhetsanalyse. Dumped munitions in Lake Mjøsa: Uncertainty analysis and discussion of the uncertainty analysis process.
(Master thesis, 2023)Sammendrag: Den overflødige mengden ammunisjon og stridsmidler etter andre verdenskrig omtales som verdenshistoriens største overproduksjon. Det var av sammensatte årsaker som sikkerhetspolitiske hensyn og vurdering av ...