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norskFakultet for naturvitenskap og teknologi
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An Improved Long Short-Term Memory Algorithm for Cardiovascular Disease Prediction
(Journal article; Tidsskriftartikkel, 2024-01-23)Cardiovascular diseases, prevalent as leading health concerns, demand early diagnosis for effective risk prevention. Despite numerous diagnostic models, challenges persist in network configuration and performance degradation, impacting model accuracy. In response, this paper introduces the Optimally Configured and Improved Long Short-Term Memory (OCI-LSTM) model as a robust solution. Leveraging the ... -
S-polarized light-sheets improve resolution and light-efficiency in oblique plane microscopy
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-12)Oblique plane microscopy (OPM) offers 3D optically sectioned imaging with high spatial- and temporal-resolution while enabling conventional sample mounting. The technique uses a concatenation of three microscopes, two for remote focusing and a tilted tertiary microscope, often including an immersion objective, to image an oblique sample plane. This design induces Fresnel reflections and a reduced ... -
Managing the Transition Towards Zero-Emission Aviation: A Grounded Theory Approach to Change Management
(Master thesis; Mastergradsoppgave, 2023-08-31)The planet is facing the prospect of irreversible climate change, and aviation is expected to contribute to a future zero-emission society. The Norwegian government, technical developers and aviation industry deem Norway as a suitable arena for developing, testing, and implementing zero-emission aviation technology. The transition towards zero-emission aviation is comparable in magnitude to the shift ... -
BPI-GNN: Interpretable brain network-based psychiatric diagnosis and subtyping
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-01)Converging evidence increasingly suggests that psychiatric disorders, such as major depressive disorder (MDD) and autism spectrum disorder (ASD), are not unitary diseases, but rather heterogeneous syndromes that involve diverse, co-occurring symptoms and divergent responses to treatment. This clinical heterogeneity has hindered the progress of precision diagnosis and treatment effectiveness in ... -
Weichselian–Holocene glacial history of the Sjuøyane archipelago, northern Svalbard
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-05)The Sjuøyane archipelago is the northernmost land area of Svalbard; thus, it provides a window to study the terrestrial glacial history and dynamics of the Svalbard–Barents Sea Ice Sheet and complement marine geological studies in the region. To reconstruct the glacial history of Sjuøyane, we describe coastal sedimentary sections in Quaternary sediments and constrain their chronology by radiocarbon ... -
Communication and Technology in Wildfire Emergency Response in Norway: Current Methods, Improvement Potential, and Barriers
(Master thesis; Mastergradsoppgave, 2024-06-20)In recent years, rising temperatures have contributed to the spread of wildfires globally, including in Norway. Record high temperatures and wildfires are placing increasing pressure on the country's fire and rescue services, highlighting the need for effective wildfire response strategies. This study explores how effective communication, and technological advancements can lead to a more successful ... -
Styrking av sikkerheten i naturbasert opplevelsesturisme En analyse av IML-sertifiseringens bidrag til sikkerhetspraksis i Norge
(Master thesis; Mastergradsoppgave, 2024-06-13)Sammendrag Denne masteroppgaven utforsker de sentrale aspektene ved sikkerhetsledelse i naturbasert opplevelsesturisme gjennom en dyptgående analyse av International Mountain Leader (IML) sertifiseringsprogrammet. Forskningen har som mål å forstå hvordan erfarne fjellguider og bedriftsledere vurderer betydningen av IML-sertifisering sammenlignet med uformell guidekompetanse for å sikre kvalitet og ... -
En verden i uro: hvordan kan vi styrke beredskapen mellom Norge og Finland?
(Master thesis; Mastergradsoppgave, 2024-06-03)Den sikkerhetspolitiske situasjonen er i rask endring og fokus på samfunnssikkerhet og beredskap har kanskje aldri vært større. I 2023 la Totalberedskapskommisjonen frem sin rapport som understreker behovet for økt samarbeid i Norden. Rapporten viser til at vi må styrke samarbeidet for et bedre totalforsvar, samfunnssikkerhet og beredskap ved å jobbe tettere sammen på tvers av landegrensene. Dette ... -
Situasjonsforståelse, krisehåndtering og resiliens i møte med hybride trusler: En kvalitativ case-studie av to hybride trusselhendelser i Norge
(Master thesis; Mastergradsoppgave, 2024-06-02)Denne masteroppgaven har en utforskende tilnærming til hybride trusler. Hybride trusler har i de senere årene blitt mer aktuelt med tanke på den voksende digitaliseringen av samfunnet, som åpner opp for et bredere virkemiddelbruk. Oppgaven er gjennomført som en kvalitativ case-studie med to caser om informerte hybride trusler som har funnet sted i Norge. Datamaterialet i denne oppgaven har blitt ... -
Barn og unges motivasjon for gjengdeltakelse – en litteraturstudie
(Master thesis; Mastergradsoppgave, 2024-05-31)Barn og unges deltakelse i kriminelle gjenger i Sverige har blitt et stadig økende problem, og grov vold og drap blant unge har nådd et rekordhøyt nivå. Barn og unge rekrutteres av kriminelle gjenger for å transportere, selge og oppbevare narkotika og våpen, delta i bedragerier og utføre vold. Gjengkriminalitet blant barn og unge er en voksende utfordring i flere områder i Sverige, og ytterligere ... -
High-resolution imaging in acoustic microscopy using deep learning
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-18)Acoustic microscopy is a cutting-edge label-free imaging technology that allows us to see the surface and interior structure of industrial and biological materials. The acoustic image is created by focusing high-frequency acoustic waves on the object and then detecting reflected signals. On the other hand, the quality of the acoustic image's resolution is influenced by the signal-to-noise ratio, the ... -
In-Cloud Icing - A case study at Fagernesfjellet, Norway using Weather Research and Forecasting model and observations
(Chapter; Bokkapittel, 2024)Atmospheric icing poses significant challenges to infrastructure integrity and transportation safety, especially in mountainous regions such as Fagernesfjellet, Norway. This paper presents a comprehensive case study of in-cloud icing over Fagernesfjellet, leveraging hindcast data obtained through dynamic downscaling with the Weather Research and Forecasting (WRF) model alongside observational data. ... -
Pre-Last Glacial Maximum glaciations in the Barents Sea: seismic investigations
(Doctoral thesis; Doktorgradsavhandling, 2024-09-19)The main objective of this PhD thesis is to improve understanding of the evolution of pre-Last Glacial Maximum Barents Sea glaciations through the study of glacial deposits from the continental margin using 3D and 2D seismic reflection data. Paper 1 presents a new chronostratigraphic framework, covering the last ∼2.7 Ma, for the Svalbard-Barents Sea margin, using 2D seismic data to extend available ... -
Combinatorics and semi-algebraic geometry of orbit spaces: Hyperbolic and stable polynomials, the degree principle and few inequalities defining orbit spaces
(Doctoral thesis; Doktorgradsavhandling, 2024-09-20)<p>Algebraic geometry studies the set of common zeros of a system of polynomials in one or several variables - most commonly over algebraically closed fields. Real algebraic geometry studies sets defined by a finite system of polynomial inequalities. <p>A starting point for modern real algebraic geometry can be traced back to Hilbert: In 1888, Hilbert showed the existence of nonnegative polynomials ... -
Slicing orbit spaces: Geometry and combinatorics of hyperbolic and even-hyperbolic slices
(Doctoral thesis; Doktorgradsavhandling, 2024-09-18)Motivated by a connection to Timofte’s degree and halfdegree principle we study canonical hyperbolic slices, that is, sets of univariate hyperbolic polynomials that share the same first few coefficients. We study the geometric and combinatorial properties of a natural stratification of these slices and use these properties to improve upon the degree principle. Amongst the geometric properties we ... -
Response to “Microdosing: A Conceptual Framework for Use as Programming Strategy for Resistance Training in Team Sports”
(Journal article; Tidsskriftartikkel, 2024-07-19)<p>This letter was written in response to the article “Microdosing: A conceptual framework for use as programming strategy for resistance training in team sports”, recently published in the <i>Strength and Conditioning Journal</i>. The article proposes a framework for implementing microdosing of resistance training across several training and competitive contexts and presents a comprehensive proposal ... -
Enhancing fuel injection system reliability through Weibull family functions analysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-01)The efficient operation of heavy machinery is crucial to the success of mining and civil construction operations. To guarantee this performance, equipment performance is assessed using the Reliability Index, which analyzes failures to study the ability of a system to carry out its intended functions under predetermined conditions. On the other hand, the failure rate and operational environmental ... -
The Complexity of Defining and Assessing the Most Demanding Periods of Play in Team Sports: A Current Opinion
(Journal article; Tidsskriftartikkel, 2024-07-19)In the context of training load monitoring, the most demanding periods of play (MDPs) have increasingly caught the interest of researchers. However, the MDPs analysis is currently embryonic, raising some conceptual and methodological questions. This current opinion synthesizes the methods used for the MDPs analysis while highlighting conceptual and methodological gaps and proposing a broader perspective ... -
Rethinking gold(II) porphyrins: an inherent wave distortion
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-23)Relativistic DFT (OLYP-D3/ZORA-STO-TZ2P) calculations predict low adiabatic ionization potentials for gold(II) porphyrins, from 4.60 eV for Au[TPP] (TPP = tetraphenylporphyrin) to 5.34 eV for Au[TPFPP] [TPFPP = tetrakis(pentafluorophenyl)porphyrin]. These values are over 1 eV lower than those calculated for analogous silver(II) porphyrins, reflecting much greater relativistic destabilization of ... -
Artificial intelligence-assisted characterization and optimization of red mud-based nanofluids for high-efficiency direct solar thermal absorption
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-30)The utilization of nanofluids (NFs) holds promise for enhancing the thermal efficiency of solar thermal collectors. Among the various NF solutions, red mud (RM) NFs have gained attention due to their effective absorption of solar thermal energy. RM comprises precious metal oxides, making it a proficient medium for direct solar heat absorption. This study aimed to formulate waterbased RM NFs with ...
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