English
norskFakultet for naturvitenskap og teknologi
Browse by
Sub-communities within this community
-
EISCAT [20]
-
Institutt for geovitenskap [1096]
-
Institutt for kjemi [620]
Collections in this community
Recent additions
-
Enhanced subglacial discharge amplifies Petermann Ice Shelf melting when ocean thermal forcing saturates
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-05-06)Increased basal melting of the Petermann Ice Shelf is typically attributed to rising ocean temperatures. While subglacial discharge is known to intensify basal melt, the underlying mechanisms and their evolution in a warming climate remain unresolved. Using a 3-D numerical regional ice shelf–ocean model centered on the Petermann Fjord, we identify a regime shift in heat flux efficiency within the ... -
Towards Migraine-Event Prediction Using Continuous Long-Term Biometric Sensor Data
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025)Migraine is a common chronic headache disorder characterizsed by episodes of moderate to severe headaches, resulting in a large personal- and societal burden. To address this, we implemented a mobile app solution aimed at enhancing continuous data collection and increasing data coverage for the Empatica E4 biometric sensor device. Our ultimate goal is to use this system in a future migraine event ... -
Piloting an Augmented Reality Exergame for Persons with Intellectual Disabilities
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025)In this paper we propose a new approach for increasing physical activity (PA) in individuals with intellectual disabilities (IDs), using augmented reality exergames to increase adherence and motivation. The game encourages PA by showing virtual elements through a mobile phone camera. The elements only appeared if the player moved in the real world. The game was specifically designed for people with ... -
Secondary use of health records for prediction, detection, and treatment planning in the clinical decision support system: a systematic review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-05-16)Background - This study aims to understand how secondary use of health records can be done for prediction, detection, treatment recommendations, and related tasks in clinical decision support systems.<p> <p>Methods - Articles mentioning the secondary use of EHRs for clinical utility, specifically in prediction, detection, treatment recommendations, and related tasks in decision support were ... -
Epistemic Security and the Monopoly on Knowledge
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024)If there is one universally known quote from Thomas Hobbes, it is his assertion that without security “there is no place for industry [...] no arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.” Indeed, in the Western context, security is typically construed as freedom from harm and/or ... -
The Role of Ballasting, Seawater Viscosity and Oxygen-Dependent Remineralization for Export and Transfer Efficiencies in the Global Ocean
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-05-05)The particulate organic carbon (POC) flux from the euphotic zone to the deep ocean is central to the biological carbon pump. It is typically evaluated using “export efficiency” and “transfer efficiency,” which reflect POC formation and sinking and carbon sequestration efficiency in the ocean's interior, respectively. Since observations of these metrics are limited, biogeochemical models can elucidate ... -
Southern Ocean Carbon Export Revealed by Backscatter and Oxygen Measurements From BGC-Argo Floats
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-04-28)The Southern Ocean (south of 30°S) contributes significantly to global ocean carbon uptake through the solubility, physical and biological pumps. Many studies have estimated carbon export to the deep ocean, but very few have attempted a basin-scale perspective, or accounted for the sea-ice zone (SIZ). In this study, we use an extensive array of BGC-Argo floats to improve previous estimates of carbon ... -
eU2U: Energy-efficient Wireless Charging and Trajectory Design for IoT Data Collection
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-05-05)Thanks to their high maneuverability, high flexibility, and low cost, unmanned aerial vehicles (UAVs) have been widely used for data collection in the Internet of Things (IoT). To deal with UAV's onboard battery limitation, UAV-to-UAV (U2U) wireless charging mechanism emerges as a promising solution for extending flight distance and reducing mission completion time. However, U2U charging mechanisms ... -
Study of the energy consumption and duration of a Cyber-Physical System reconfiguration in the Arctic Tundra: from experiments on real infrastructure to extensive simulations
(Doctoral thesis; Doktorgradsavhandling, 2025-05-23)Cyber-Physical systems (CPS) deployed in scarce-resource environments like the Arctic Tundra for in-situ and long-term observation face extreme conditions. Nodes deployed on the field are under a limited energy budget. To save energy and increase their lifetimes, nodes are forced to alternate between short uptime periods and long sleeping periods. Uptime schedules depend notably on observation tasks ... -
Arctic fjord ecosystem adaptation to cryosphere meltdown over the past 14,000 years
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-04-25)The Arctic cryosphere is the epicentre of acute global change impact, with abrupt warming and amplification driving rapid sea ice decline and irreversible glacial ice loss. A key challenge is understanding how the cryosphere meltdown will impact Arctic marine carbon cycles and ecosystems. Here, we use organic geochemical biomarkers to trace the contribution of different planktonic groups to organic ... -
Tectonic evolution of the North Norwegian Caledonides in the North Troms region. A structural, metamorphic, geochemical and geochronological analysis of the Balsfjord Group and Nakkedal Nappe Complex as parts of the north Norwegian nappe assembly
(Doctoral thesis; Doktorgradsavhandling, 2025-05-22)This thesis presents new data for the geological units of the Balsfjord Group and Nakkedal Nappe Complex that are part of the North Norwegian Caledonides. The Balsfjord Group has been shown to feature a complex structural history including four stages of progressive deformation labelled as S0–1–S4 where S2 represents the main metamorphic foliation. It also exhibits a significant rotation of the ... -
Ultrasound & Photoacoustic Microscopy for Biomedical Applications
(Doctoral thesis; Doktorgradsavhandling, 2025-05-21)<p>Ultrasound and photoacoustic microscopy hold great promise for deep tissue imaging with high resolution, offering different applications in biological research. The primary aim of this thesis is to perform correlative photoacoustic and ultrasound microscopy experiments on various biological samples. <p>This thesis discusses multiple imaging modes, including A-scan, B-scan, and C-scan, each ... -
Cost-Efficient Vehicular Edge Computing Deployment for Mobile Air Pollution Monitoring
(Chapter; Bokkapittel, 2024-07-03)Vehicular Edge Computing (VEC) emerges as a rem-edy to achieve flexible and fine-grained air pollution monitoring, where vehicles equipped with onboard sensors can sense, process, calibrate and store air pollutants on the drive, and roadside units (RSUs) can be deployed for vehicles to offload data via low-cost vehicle-to-RSU (V2R) communication. However, existing VEC-based air pollution monitoring ... -
Reactive Power Observability for Improved Voltage Stability and Loadability: A Detailed Review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-13)In power grid modernisation, optimal network use is essential to preserving acceptable voltage profiles, boosting voltage stability, reducing power losses, and strengthening system security and dependability. This can be accomplished by strategically placing reactive power compensation devices within transmission and distribution networks, such as capacitor banks, synchronous condensers, flexible ... -
A constellation of mud volcanoes originated from a buried Arctic mega-slide, Southwestern Barents Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-04-30)Global estimates on the number of submarine mud volcanoes are highly uncertain, as well as their role in the deep-sea biosphere and methane budgets. Here, we report the discovery of ten Arctic mud volcanoes in the Barents Sea (440–480 m depth), where only two had been previously known. The new mud volcanoes form flat-topped mounds on the seafloor and are connected to seismic chimneys rooted within ... -
Trading off regional and overall energy system design flexibility in the net-zero transition
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025)Thetransitiontonet-zeroemissionsinEuropeisdeterminedbyapatchworkofcountry-levelandEUwide policy, creating coordination challenges in an interconnected system. We use an optimisation model to mapoutnear-optimal energy system designs for 2050, focussing on the planning flexibility of individual regions while maintaining overall system robustness against different weather years, cost assumptions, and ... -
Customizable and Programmable Deep Learning
(Conference object; Konferansebidrag, 2024-12-02)In this study, we explore the potential of pre-trained deep learning models, proposing a new approach that emphasizes their reusability and adaptability. Our framework, termed “customizable” deep learning, facilities users to seamlessly integrate diverse pre-trained models for addressing new tasks and enhancing existing solutions. Furthermore, we introduce a “programmable” adapter that enables the ... -
Attention Seekers U-Net with Mamba for Sub-cellular Segmentation
(Conference object; Konferansebidrag, 2024-12-04)Accurate segmentation of subcellular structures from microscopy images is crucial for understanding cellular processes and functions, but it presents significant challenges due to factors such as noise, low signal-to-noise ratios, limited resolution, and complex spatial arrangements. To address these challenges, we introduce CMU-Net, a novel hybrid architecture that combines the strengths of U-Net, ... -
Coordination-Free Replicated Datalog Streams with Application-Specific Availability
(Chapter; Bokkapittel, 2024-09-01)Data are continuously generated, processed and consumed everywhere. However, the computing devices may be disconnected from the network. We want the disconnection to have as little impact on the availability of data as possible. This paper presents an approach to transform a sequential Datalog program into a distributed one. The distributed program meets the specified availability and fault-tolerance ... -
Glacier releases of heavy metals in Kongsfjorden: What are the ecosystem impacts?
(Conference object; Konferansebidrag, 2025-01)While climate change is of global concern, its impacts are especially rapid and pronounced in Arctic ecosystems. Arctic glaciers have been particularly impacted, with increasing melt and retreat in conjunction with shifts in riverine freshwater and sediment discharge. Arctic fjords are the ultimate recipients of glacial discharge and a plethora of heavy metals released from glacial environments. ...
RSS 1.0