Fakultet for naturvitenskap og teknologi: Nye registreringer
Viser treff 1-20 av 5110
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fair-calibrate v1.4.1: calibration, constraining, and validation of the FaIR simple climate model for reliable future climate projections
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-03)Simple climate models (also known as emulators) have re-emerged as critical tools for the analysis of climate policy. Emulators are efficient and highly parameterised, where the parameters are tunable to produce a diversity of global mean surface temperature (GMST) response pathways to a given emission scenario. Only a small fraction of possible parameter combinations will produce historically ... -
Semi-automated analysis of faults with meter-scale displacements and networks of planar features using high-resolution 3D seismic to investigate gas leakage at the Vestnesa Ridge, eastern Fram Strait
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-13)We develop a semiautomated method for extracting faults and other planar features from two high-resolution (HR) seismic volumes in the eastern Fram Strait. We assess seismic data quality and resolution prior to structural interpretation to determine the appropriate processing workflow. This workflow, designed for HR data sets, identifies meter-scale (>3–4 m) faults and other planar features, picked ... -
Creating better internships by understanding mentor challenges: findings from a series of focus groups
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-15)Background - Despite demands to make higher education more relevant beyond academia, and a growing body of work testifying to the benefits of work-relevance programs (e.g., work-placements, or internships) for both students and the companies that host them, there is limited information available for those aiming to optimize these programs. For example, few have explored the challenges and needs of ... -
Directional Multiobjective Optimization of Metal Complexes at the Billion-Scale with the tmQMg-L Dataset and PL-MOGA Algorithm
(Journal article; Tidsskriftartikkel, 2023-09-25)Transition metal complexes (TMCs) play a key role in several areas of high interest, including medicinal chemistry, renewable energies, and nanoporous materials. The development of TMCs enabling these technologies remains challenged by the need to optimize multiple properties within very large chemical spaces, in which the thirty transition metals can be combined with a virtually infinite number of ... -
Equivariant algebraic and semi-algebraic geometry of infinite affine space
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-03)We study Sym(∞)-orbit closures of non-necessarily closed points in the Zariski spectrum of the infinite polynomial ring C[xij : i ∈ N, j ∈ [n]]. Among others, we characterize invariant prime ideals in this ring. Furthermore, we study projections of basic equivariant semi-algebraic sets defined by Sym(∞) orbits of polynomials in R[xij : i ∈ N, j ∈ [n]]. For n = 1 we prove a quantifier elimination ... -
A Bayesian network model for estimating the combined risk in Northeast Passage escort operations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-12-02)Escort and convoy operations are commonly employed and highly effective strategies in the Arctic, particularly when ship navigating independently becomes challenging due to adverse ice conditions. Nonetheless, these operations are also among the riskiest, given their potential to lead to collisions between ships and icebreakers, as well as ships besetting in ice. Consequently, a robust estimation ... -
Remote Towers påvirkning på piloters beslutningsgrunnlag
(Master thesis; Mastergradsoppgave, 2024-05-31)Fjernstyrt koordinering av lufttrafikk er implementert og driftes idag på 11 lufthavner i Norge. Organisering av norsk luftfart tilknyttet kortbanenettet og den norske geografien har gjort uttesting av fjernstyrt teknologi egnet. Formålet med studiet er å belyse tematikken i et sikkerhetsperspektiv gjennom kobling mellom teknologi og menneske. Dette studiet omhandler fjernstyrt tårntjenestes påvirkning ... -
Automatisk rettet eksamen i generell kjemi
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-29)En god avsluttende eksamen vurderer i hvilken grad intendert læringsutbytte har blitt oppnådd på en objektiv, reproduserbar og helst autentisk måte. Det er imidlertid lite tilfredsstillende hvis en faglærer bruker mye tid på vurdering av læring framfor vurdering for læring underveis i semesteret. Derfor kan det være attraktivt å utforske muligheter med en digital automatisk rettet eksamen, spesielt ... -
Studentaktiv læring med store studentgrupper: flervalgsoppgaver i sentrum
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-16)To viktige prinsipper for å øke studentenes læring i undervisning er aktiv deltagelse og formativ vurdering. Innføring av disse prinsippene i undervisning med store studentgrupper kan imidlertid by på utfordringer, særlig i nettbasert undervisning. En mulig løsning kan være bruk av flervalgsoppgaver som diagnostisk testing med innsamling av svarene og påfølgende formativ vurdering – en undervisningsform ... -
BFR2: a curated ribosomal reference dataset for benthic foraminifera
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-27)Benthic foraminifera are one of the major groups of marine protists that also occur in freshwater and terrestrial habitats. They are widely used to monitor current and past environmental conditions. Over the last three decades, thousands of DNA sequences have been obtained from benthic foraminiferal isolates. The results of this long-term effort are compiled here in the form of the first curated ... -
Model and Data Diagnosis under Limited Supervision in Modern AI
(Doctoral thesis; Doktorgradsavhandling, 2024-12-13)Deep Learning in modern Artificial Intelligence (AI) has witnessed unprecedented success on a variety of domains over the past decade, ranging from computer vision to natural language reasoning tasks. This success is owed primarily to the availability of large, annotated datasets, the existence of powerful mathematical models, and the mechanism to train large models on such data with advanced resources ... -
Bringing it all together: Science priorities for improved understanding of Earth system change and to support international climate policy
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-18)We review how the international modelling community, encompassing integrated assessment models, global and regional Earth system and climate models, and impact models, has worked together over the past few decades to advance understanding of Earth system change and its impacts on society and the environment and thereby support international climate policy. We go on to recommend a number of priority ... -
The challenges of the increasing institutionalization of climate security
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-25)A rapid and widespread institutionalization of climate security is underway, led by powerful states and international organizations. Recognition of the climate crisis by security actors as a serious threat to humanity is long overdue, but it is imperative that this institutionalization is critically scrutinized. This commentary highlights specific dangers that accompany the institutional mainstreaming ... -
AC Microgrid Modeling and Adaptive Control Using Biomimetic Valence Learning: An AI-Based Approach
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-04)AC microgrids play a crucial role in integrating distributed energy resources and facilitating localized power management in contemporary power networks. Nevertheless, conventional droop control methods in these microgrids have constraints in guaranteeing precise power distribution, stability of voltage/frequency, and flexibility in response to changing operating conditions. This study introduces ... -
ANN-Based Real-Time Optimal Voltage Control In Islanded AC Microgrids
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-18)The purpose of this paper is to explore an innovative primary control strategy for a voltage source inverter (VSI). This strategy involves integrating an Artificial Neural Network (ANN) into the proportional resonant (PR) regulator within the inner loop of the primary control system. The primary objective is to regulate the output voltage and minimize deviations under various operating conditions, ... -
Consent Management System on Patient-Generated Health Data
(Chapter; Bokkapittel, 2024)We consent to many things in life, but sometimes we do not know what we consent to. When discussing data protection in Europe, consent has been associated with permission under the GDPR, and health data are highly sensitive. Patients cannot make an informed decision without being provided with the information they need upfront: no informed decision, no informed consent. This paper presents a consent ... -
AI-Based Cropping of Soccer Videos for Different Social Media Representations
(Chapter; Bokkapittel, 2024-01-29)The process of re-publishing soccer videos on social media often involves labor-intensive and tedious manual adjustments, particularly when altering aspect ratios while trying to maintain key visual elements. To address this issue, we have developed an AI-based automated cropping tool called SmartCrop which uses object detection, scene detection, outlier detection, and interpolation. This innovative ... -
SmartCrop-H: AI-Based Cropping of Ice Hockey Videos
(Chapter; Bokkapittel, 2024-04-17)Sports multimedia plays a central role in captivating audiences on social media platforms. However, fast-paced sports such as ice hockey pose unique challenges due to their swift gameplay and the small puck size, making object tracking-based video adaptation for social media a complex task. In this context, we introduce SmartCrop-H, an innovative ice hockey video cropping tool powered by advanced ... -
Representing Power Variability of an Idle IoT Edge Node in the Power State Model
(Chapter; Bokkapittel, 2023-05-01)Simulations can be used to efficiently predict and explore energy consumption of nodes in cyber-physical and IoT systems. The Power State Model (PSM), widely used in simulators, uses only a single value for the energy consumption, for each power state of a node. However, for a given state (including the idle state) the actual consumed energy can vary. Consequently, PSM having a single value only per ... -
Design and Evaluation of Single-Board Computer Based Power Monitoring for IoT and Edge Systems
(Chapter; Bokkapittel, 2023-05-01)Internet of Things (IoT) and edge platforms are very complex systems. They are heterogeneous in terms of hardware and software. In these systems, being able to document the energy consumed by the nodes is important. To mitigate the impact of such systems on the energy consumption and improve their energy efficiency, research experiments involving power monitoring tools are required.However, in the ...