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norskFakultet for naturvitenskap og teknologi
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Beyond the storm season: The polyrhythms of coastal hazardscapes on the Kū aotunu Peninsula
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-17)In this paper, we develop an account of engaged practice of coastal conservation groups with seasonalities on the Coromandel Peninsula in New Zealand, focusing particularly on the polyrhythmicity of change in its coastal hazardscape. While the hazardousness of a place has often been considered in static terms, we wish here to draw attention to its complex temporalities and highly seasonal nature. ... -
2-Pyridinyl/quinolyl-phenylamino-quinoline Complexes With CF3 and C2F5 Ligated Ni
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-21)A new ligand architecture based on quinoline/pyridine attached ortho to the amine functionality on an aniline, which is coupled to another quinoline unit has been prepared. Ligands <b>L1</b> and <b>L2</b> have been complexed with CF<sub>3</sub> and C<sub>2</sub>F<sub>5</sub> ligated nickel centers. The resulting complexes have been extensively studied by NMR spectroscopy (on <sup>1</sup>H, ... -
Marine Operations in the Norwegian Sea and the Ice-Free Part of the Barents Sea with Emphasis on Polar Low Pressures
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-18)The Arctic Seas are attractive for shipping, fisheries, and other marine activities due to the abundant resources of the Arctic. The shrinking ice cover allows for the opening of activities in increasingly larger areas of the Arctic. This paper evaluates the possibility of executing all-year complex marine activities, here termed “marine operations”, in the Norwegian Sea and the icefree part of ... -
Smartphone App for Improving Self-Awareness of Adherence to Edoxaban Treatment in Patients With Atrial Fibrillation (ADHERE-App Trial): Randomized Controlled Trial
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-21)Background: Adherence to oral anticoagulant therapy is essential to prevent ischemic stroke in patients with atrial fibrillation (AF).<p> <p>Objective: This study aimed to evaluate whether smartphone app–based interventions improve medication adherence in patients with AF.<p> <p>Methods: This open-label, multicenter randomized controlled trial (ADHERE-App [Self-Awareness of Drug Adherence to ... -
Projections of precipitation and temperatures in Greenland and the impact of spatially uniform anomalies on the evolution of the ice sheet
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-12)Simulations of the Greenland ice sheet (GrIS) at millennial timescales and beyond often assume spatially and temporally uniform temperature anomalies and precipitation sensitivities over these timescales or rely on simple parameterisation schemes for the precipitation rates. However, there is no a priori reason to expect spatially and temporally uniform sensitivities across the whole GrIS. Precipitation ... -
Multiresolution of the one dimensional free-particle propagator. Part 1: Construction
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-19)The free-particle propagator, a key operator in various algorithms for simulating the time evolution of the Schrödinger equation, is studied. A multiscale approximation of this propagator is constructed, representing the semigroup associated with the free-particle Schrödinger operator in a multiwavelet basis. This representation involves integrals of highly oscillatory functions. These integrals are ... -
Years matter: the role of memory and place attachment in remote Nordic areas facing natural hazards
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-05)Remembrance, commemoration, and specific dates play an important role in many societies and cultures. They can be about positively connotated events with societal impacts, such as reunifications or the gaining of independence, but also disastrous or other devastating events on a national or international scale. In disaster risk areas, there are various ways such events are addressed. While for some ... -
Heavy Molecular and Metallic Ions in the Magnetosphere
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-04)Observations and present knowledge of heavy ions with mass ≥ 27 in the magnetosphere are reviewed. There are four ultimate sources of these heavy ions: the solar wind (mainly high charge-state atomic ions), the ionosphere (mainly molecular ions), the atmospheric metal layers that originate ultimately from ablation of meteoroids and possibly space debris (low charge-state metallic ions and metal-rich ... -
Enhancing Accessibility in Online Shopping: A Dataset and Summarization Method for Visually Impaired Individuals
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-02)A visually impaired individual (VI) encounters numerous challenges in their daily activities, particularly in tasks reliant on visual systems such as navigation, educational pursuits, and shopping. Online shopping poses a heightened difficulty due to its reliance on visual representations of products in digital formats. The impact of visual impairment on product selection based on reviews remains ... -
Multiresolution of the one dimensional free-particle propagator. Part 1: Construction
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-19)The free-particle propagator, a key operator in various algorithms for simulating the time evolution of the Schrödinger equation, is studied. A multiscale approximation of this propagator is constructed, representing the semigroup associated with the free-particle Schrödinger operator in a multiwavelet basis. This representation involves integrals of highly oscillatory functions. These integrals are ... -
Assessing Environmental Quality in a Historically Polluted Fjord: A Comparison of Benthic Foraminiferal eDNA and Morphospecies Approaches
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-30)This study is the first assessment of a fjord Ecological Quality Status (EcoQS) by comparing both the traditional morphology-based and emerging metabarcoding techniques in benthic foraminifera. For this, we focus on historically polluted Idefjord on the Swedish Norwegian border, which has experienced high effluent load from pulp and paper mill for almost a century. Based on our results, the morphological ... -
The Growth and Decay of Intense GNSS Amplitude and Phase Scintillation During Non‐Storm Conditions
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-30)A multi‐instrument study is conducted at the dayside polar ionosphere to investigate the spatio‐ temporal evolution of scintillation in Global Navigation Satellite System (GNSS) signals during non‐storm conditions. Bursts of intense amplitude and phase scintillation started to occur at ∼9 MLT and persisted for more than 1 hour implying the simultaneous existence of Fresnel and large‐scale sized ... -
Weekly Cumulative Quizzes in Organic Chemistry
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-11)A challenge in organic chemistry as well as in other subjects is that a set of fundamental skills is required to master more advanced topics. In an attempt to force students to invest in learning fundamental concepts before working with more advanced topics, we have introduced weekly compulsory quizzes and associated practice tests in our introductory organic chemistry course. The weekly quizzes are ... -
Impact of Paleocene–Eocene tectonic and climatic forcing on Arctic sediment transfer variability: SW Barents Sea, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-29)During the Paleocene and Eocene, many Arctic basins experienced multiple, yet synchronous periods of increased sedimentation rates. Several causal factors have been suggested including major volcanic events, tectonic plate reorganization and plate break-up, as well as widespread uplift along with contemporaneous and short-lived hyperthermal events. However, the significance of and relation between ... -
Leveraging Network Science for the Exploration of Deep Learning Latent Representations
(Mastergradsoppgave; Master thesis, 2023-12-15)Deep Neural networks has pushed the boundary for what is achievable in the field of machine learning. At its core the Neural network maps data from an input space, to a highly abstract latent space. The representations of these latent mappings are critical for the neural networks ability to perform the task it is given. However critical, our knowledge on these abstract representations in the latent ... -
Impact of varying solar angles on Arctic iceberg area retrieval from Sentinel-2 near-infrared data
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-18)Icebergs are part of the glacial mass balance and they interact with the ocean and with sea ice. Optical satellite remote sensing is often used to retrieve the above-waterline area of icebergs. However, varying solar angles introduce an error to the iceberg area retrieval that had not been quantified. Herein, we approximate the iceberg area error for top-of-atmosphere Sentinel-2 near-infrared data ... -
Evaluating an accelerated forcing approach for improving computational efficiency in coupled ice sheet–ocean modelling
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-21)Coupled ice sheet–ocean models are increasingly being developed and applied to important questions pertaining to processes at the Greenland and Antarctic Ice Sheet margins, which play a pivotal role in ice sheet stability and sea level rise projections. One of the challenges of such coupled modelling activities is the timescale discrepancy between ice and ocean dynamics. This discrepancy, combined ... -
Rumor detection using dual embeddings and text-based graph convolutional network
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-19)Social media platforms like Twitter and Facebook have gradually become vital for communication and information exchange. However, this often leads to the spread of unreliable or false information, such as harmful rumors. Currently, graph convolutional networks (GCNs), particularly TextGCN, have shown promise in text classification tasks, including rumor detection. Their success is due to their ability ... -
Baffin Bay Ice Export and Production From Sentinel-1, the RADARSAT Constellation Mission, and CryoSat-2: 2016–2022
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-13)Baffin Bay is located between Greenland and several islands of the Canadian Arctic, providing a conduit for the downstream transport of ice and freshwater to the North Atlantic via Davis Strait. Using satellite observations from Sentinel‐1, the RADARSAT Constellation Mission, and CryoSat‐2, we estimated the sea ice export through Davis Strait and winter ice production in Baffin Bay from 2016 to ... -
Characterizing the Impact of Physical Activity on Patients with Type 1 Diabetes Using Statistical and Machine Learning Models
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-29)Continuous glucose monitoring (CGM) represents a significant advancement in diabetes management, playing an important role in glycemic control for patients with type 1 diabetes (T1D). Despite their benefits, their performance is affected by numerous factors such as the carbohydrate intake, alcohol consumption, and physical activity (PA). Among these, PA could cause hypoglycemic episodes, which ...
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