Fakultet for naturvitenskap og teknologi: Nye registreringer
Viser treff 781-800 av 5363
-
Use of a Data-Sharing System During Diabetes Consultations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023)Patient-gathered self-management data and shared decision-making are touted as the answer to improving an individual’s health situation as well as collaboration between patients and their providers leading to more effective treatment plans. However, there is a gap between this ideal and reality – a lack of data-sharing technology. Here, we present the impact that the FullFlow System for sharing ... -
Real-Time Ship Draft Measurement and Optimal Estimation Using Kalman Filter
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-02)Ship operators typically depend on the visual method for draft reading, which may lead to errors or approximations, and it further introduces draft survey calculation errors and can not provide continuous updates. Ensuring accurate real-time ship draft measurement becomes crucial for enhancing navigational safety, optimizing vessel performance, and achieving precise cargo and consumable measurements. ... -
View it like a radiologist: Shifted windows for deep learning augmentation of CT images
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-23)Deep learning has the potential to revolutionize medical practice by automating and performing important tasks like detecting and delineating the size and locations of cancers in medical images. However, most deep learning models rely on augmentation techniques that treat medical images as natural images. For contrast-enhanced Computed Tomography (CT) images in particular, the signals producing the ... -
Associations and predictive power of dietary patterns on metabolic syndrome and its components
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-31)Background and aims: Metabolic syndrome (MetS) defines important risk factors in the development of cardiovascular diseases and other serious health conditions. This study aims to investigate the influence of different dietary patterns on MetS and its components, examining both associations and predictive performance.<p> <p>Methods and results: The study sample included 10,750 participants from ... -
On mechanisms for high-frequency pump-enhanced optical emissions at 557.7 and 630.0gnm from atomic oxygen in the high-latitude F-region ionosphere
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-13)The EISCAT (European Incoherent Scatter Scientific Association) Heating facility was used to transmit powerful high-frequency (HF) electromagnetic waves into the Fregion ionosphere to enhance optical emissions at 557.7 and 630.0 nm from atomic oxygen. The emissions were imaged by several stations of ALIS (Auroral Large Imaging System) in northern Sweden, and the EISCAT UHF incoherent scatter radar ... -
Impact of the Nares Strait sea ice arches on the long-term stability of the Petermann Glacier ice shelf
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-12)One of the last remaining floating tongues of the Greenland ice sheet (GrIS), the Petermann Glacier ice shelf (PGIS), is seasonally shielded from warm Atlantic water (AW) by the formation of sea ice arches in the Nares Strait. However, continued decline of the Arctic sea ice extent and thickness suggests that arch formation is likely to become anomalous, necessitating an investigation into ... -
Structure/function studies of the NAD<sup>+</sup>-dependent DNA ligase from the poly-extremophile Deinococcus radiodurans reveal importance of the BRCT domain for DNA binding
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-15)Bacterial NAD<sup>+</sup>-dependent DNA ligases (LigAs) are enzymes involved in replication, recombination, and DNA-repair processes by catalyzing the formation of phosphodiester bonds in the backbone of DNA. These multidomain proteins exhibit four modular domains, that are highly conserved across species, with the BRCT (breast cancer type 1 C-terminus) domain on the C-terminus of the enzyme. In ... -
Discriminative multimodal learning via conditional priors in generative models
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-02)Deep generative models with latent variables have been used lately to learn joint representations and generative processes from multi-modal data, which depict an object from different viewpoints. These two learning mechanisms can, however, conflict with each other and representations can fail to embed information on the data modalities. This research studies the realistic scenario in which all ... -
Security of Supply: A National or European Competence?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-16)Security of supply refers to governmental policies that aim to secure the availability of critical products at all times. The COVID-19 pandemic brought to fore the importance of such policies, as suddenly there was an overwhelming need for critical medical supplies that the markets were not able to fulfil. Following the pandemic, the EU has started to construct its own security of supply policy, ... -
Local Oxidation States in {FeNO}<sup>6-8</sup> Porphyrins: Insights from DMRG/CASSCF-CASPT2 Calculations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-27)A first DMRG/CASSCF–CASPT2 study of a series of paradigmatic {FeNO}<sup>6</sup>, {FeNO}<sup>7</sup>, and {FeNO}<sup>8</sup> heme–nitrosyl complexes has led to substantial new insight as well as uncovered key shortcomings of the DFT approach. By virtue of its balanced treatment of static and dynamic correlation, the calculations have provided some of the most authoritative information available to ... -
Cavity-Free Continuum Solvation: Implementation and Parametrization in a Multiwavelet Framework
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-18)We present a multiwavelet-based implementation of a quantum/classical polarizable continuum model. The solvent model uses a diffuse solute–solvent boundary and a position-dependent permittivity, lifting the sharp-boundary assumption underlying many existing continuum solvation models. We are able to include both surface and volume polarization effects in the quantum/classical coupling, with guaranteed ... -
A Theoretical Search for Stable Terminal Carbides
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-20)xploratory scalar-relativistic density functional theory (B3LYP*-D3/ZORA-STO-TZ2P) calculations have been used to examine the stability and bonding of pseudotetrahedral Group 8 (Fe, Ru, and Os) and Group 9 (Co, Rh, and Ir) terminal carbide complexes with dδ4 ground states and tripodal tris(N-heterocyclic-carbene) supporting ligands. The calculations predict relatively low adiabatic ionization ... -
Sub-ppm Methane Detection with Mid-Infrared Slot Waveguides
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-21)Hybrid integration of photonic chips with electronic and micromechanical circuits is projected to bring about miniature, but still highly accurate and reliable, laser spectroscopic sensors for both climate research and industrial applications. However, the sensitivity of chip-scale devices has been limited by immature and lossy photonic waveguides, weak light–analyte interaction, and etalon effects ... -
Machine learning assisted multifrequency AFM: Force model prediction
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-05)Multifrequency atomic force microscopy (AFM) enhances resolving power, provides extra contrast channels, and is equipped with a formalism to quantify material properties pixel by pixel. On the other hand, multifrequency AFM lacks the ability to extract and examine the profile to validate a given force model while scanning. We propose exploiting data-driven algorithms, i.e., machine learning packages, ... -
Quantifying short-term changes in snow strength due to increasing liquid water content above hydraulic barriers
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-31)The rapid weakening of snow layers that accumulate infiltrating liquid water is a well-known, but poorly quantified, mechanism for wet-snow slab avalanche formation. Therefore, quantifying this mechanical process is a crucial part of forecasting these snow avalanches accurately. Currently, studies do not agree on how snow strength should change as a function of volumetric liquid water content ( ) ... -
Calcium isotopes track volatile components in the mantle sources of alkaline rocks and associated carbonatites
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-16)The volatile components CO2 and H2O induce mantle melting and thus exert major controls on mantle heterogeneity. Primitive intraplate alkaline magmatic rocks are the closest analogues for incipient mantle melts and provide the most direct method to assess such mantle heterogeneity. Given the considerable Ca isotope differences among carbonate, clinopyroxene, garnet, and orthopyroxene in the mantle ... -
Enhanced teaching and learning outcomes from restructuring a basic organic chemistry course
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-10)The first course in organic chemistry is tough for many students, and motivation may be an additional serious problem if you are taking the course as a part of your study program but do not intend to become a chemist. The combination of long, speedy traditional lectures, complicated material and the use of an important new language (electron flow arrows) does not contribute to easing the cognitive ... -
Bacterial extracellular vesicles: towards realistic models for bacterial membranes in molecular interaction studies by surface plasmon resonance
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-13)One way to mitigate the ongoing antimicrobial resistance crisis is to discover and develop new classes of antibiotics. As all antibiotics at some point need to either cross or just interact with the bacterial membrane, there is a need for representative models of bacterial membranes and efficient methods to characterize the interactions with novel molecules -both to generate new knowledge and to ... -
A comparison of constant false alarm rate object detection algorithms for iceberg identification in L- and C-band SAR imagery of the Labrador Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-15)In this study, we pursue two objectives: first, we compare six different “constant false alarm rate” (CFAR) algorithms for iceberg detection in SAR images, and second, we investigate the effect of radar frequency by comparing the detection performance at C- and L-band. The SAR images were acquired over the Labrador Sea under melting conditions. In an overlapping optical Sentinel-2 image, 492 icebergs ... -
Probabilistic Load Forecasting With Reservoir Computing
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-15)Some applications of deep learning require not only to provide accurate results but also to quantify the amount of confidence in their prediction. The management of an electric power grid is one of these cases: to avoid risky scenarios, decision-makers need both precise and reliable forecasts of, for example, power loads. For this reason, point forecasts are not enough hence it is necessary to adopt ...