Now showing items 21-40 of 20948

    • Formation of an additional density peak in the bottom side of the sodium layer associated with the passage of multiple mesospheric frontal systems 

      Narayanan, Viswanathan Lakshmi; Nozawa, Satonori; Oyama, Shin-Ichiro; Mann, Ingrid; Shiokawa, Kazuo; Otsuka, Yuichi; Saito, Norihito; Wada, Satoshi; Kawahara, Takuya D.; Takahashi, Toru (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-18)
      We present a detailed investigation of the formation of an additional sodium density peak at altitudes of 79–85 km below the main peak of the sodium layer based on sodium lidar and airglow imager measurements made at Ramfjordmoen near Tromsø, Norway, on the night of 19 December 2014. The airglow imager observations of OH emissions revealed four passing frontal systems that resembled mesospheric ...
    • Deep Image Translation With an Affinity-Based Change Prior for Unsupervised Multimodal Change Detection 

      Luppino, Luigi Tommaso; Kampffmeyer, Michael; Bianchi, Filippo Maria; Moser, Gabriele; Serpico, Sebastiano Bruno; Jenssen, Robert; Anfinsen, Stian Normann (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-17)
      Image translation with convolutional neural networks has recently been used as an approach to multimodal change detection. Existing approaches train the networks by exploiting supervised information of the change areas, which, however, is not always available. A main challenge in the unsupervised problem setting is to avoid that change pixels affect the learning of the translation function. We propose ...
    • Behind the scenes of spin-forbidden decay pathways in transition metal complexes 

      Moitra, Torsha; Karak, Pijush; Chakraborty, Sayantani; Ruud, Kenneth; Chakrabarti, Swapan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-10)
      The interpretation of the ultrafast photophysics of transition metal complexes following photo-absorption is quite involved as the heavy metal center leads to a complicated and entangled singlet–triplet manifold. This opens up multiple pathways for deactivation, often with competitive rates. As a result, intersystem crossing (ISC) and phosphorescence are commonly observed in transition metal complexes. ...
    • Hvordan ser minoritetsrettighetenes fremtid ut i et mer høyreekstremt Øst-Europa? 

      Kronkvist, Hedda Schou (Mastergradsoppgave; Master thesis, 2021-06-01)
      Høyreekstreme bevegelser, politiske partier og aktivister er antatt for å være den største terrortrusselen i dagens Europa. Minoriteter blir ansett å være en av de mest sårbare gruppene ovenfor den økende høyreekstremismen. Det har vært en stor økning av høyreekstremisme og høyreradikalisme i Europa de siste årene, derfor omhandler denne oppgaven fremtiden til minoritetsrettighetene i et mer ...
    • Inkludering og elever med stort læringspotensial En casestudie av elevers opplevde inkludering 

      Porsanger, Camilla (Mastergradsoppgave; Master thesis, 2021-05-21)
      Sammendrag Formålet med denne casestudien var å søke kunnskap og data, som enten kunne gi ny-, utfyllende-, eller motstridende informasjon, om hvordan elever med stort læringspotensial beskriver sin opplevelse av å være inkludert i skolen. Jeg ønsket informasjon om elevgruppen som kunne være nyttig for skolen i fremtiden. Min problemstilling var; Hvordan beskriver elever med stort læringspotensial ...
    • Lærer i møte med elever som viser utagerende atferd 

      Skogstad, Eva Torill (Mastergradsoppgave; Master thesis, 2021-05-21)
      Sammendrag Formålet med dette masterstudiet er å undersøke hvordan lærere møter elever som viser utagerende atferd. Studiens problemstilling er: «Hva fremstår som lærernes måte å møte elever som viser utagerende atferd»? Disse møtene med elevene krever handlinger som svarer til situasjonen. Dette er kompetanse som undersøkes nærmere gjennom forskningsspørsmålene: Hva sier og gjør lærere i ...
    • Rapid development and persistence of efficient subglacial drainage under 900 m-thick ice in Greenland 

      Chandler, David Matthew; Wadham, Jemma Louise; Nienow, Peter W.; Doyle, Samuel H.; Tedstone, Andrew J.; Telling, Jon; Hawkings, Jonathan R.; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun Lloyd (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-11)
      Intensive study of the Greenland Ice Sheet's (GrIS) subglacial drainage has been motivated by its importance for ice dynamics and for nutrient/sediment export to coastal ecosystems. This has revealed consistent seasonal development of efficient subglacial drainage in the lower ablation area. While some hydrological models show qualitative agreement with field data, conflicting evidence (both field- ...
    • A framework to guide planetary health education 

      Faerron Guzmán, Carlos A; Aguire, Alonso; Astle, Barbara; Barros, Enrique; Bayles, Brett; Chimbari, Moses; El-Abbadi, Naglaa; Evert, Jessica; Hackett, Finola; Howard, Courtney; Jennings, Jonathan; Krzyzek, Amy; LeClair, Jessica; Maric, Filip; Martin, Olwenn V.; Osano, Odipo; Patz, Jonathan; Potter, Teddie; Redvers, Nicole; Trienekens, Noortje; Walpole, Sarah; Wilson, Lynda; Xu, Chenchen; Zylstra, Matthew (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-21)
      People around the world are increasingly facing the pressing challenges of today's interconnected environmental, social, and health crises. The COVID-19 pandemic has been an important wake-up call reminding us that we need a healthy planet to ensure the health of all people. The emerging field of planetary health is a framework for understanding these interconnections and identifying solutions to ...
    • Influence of Arctic light conditions on crop production and quality 

      Mølmann, Jørgen A; Dalmannsdottir, Sigridur; Hykkerud, Anne Linn; Hytönen, Timo; Samkumar, Amos; Jaakola, Laura (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-10)
      The natural light conditions above the Arctic Circle are unique in terms of annual variation creating special growth conditions for crop production. These include low solar elevations, very long daily photosynthetic light periods, midnight sun/absence of dark nights, and altered spectral distribution depending on solar elevation. All these factors are known to affect the growth and the metabolism ...
    • Can root-associated fungi mediate the impact of abiotic conditions on the growth of a High Arctic herb? 

      Wutkowska, Magdalena; Ehrich, Dorothee; Mundra, Sunil; Vader, Anna; Eidesen, Pernille Bronken (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-04)
      Arctic plants are affected by many stressors. Root-associated fungi are thought to influence plant performance in stressful environmental conditions. However, the relationships are not well-known; do the number of fungal partners, their ecological functions and community composition mediate the impact of environmental conditions and/or influence host plant performance? To address these questions, ...
    • Virtual reality and naturalistic developmental behavioral interventions for children with autism spectrum disorder 

      Dechsling, Anders; Shic, Frederick; Zhang, Dajie; Marschik, Peter B.; Esposito, Gianluca; Orm, Stian; Sütterlin, Stefan; Kalandadze, Tamara; Øien, Roald A; Nordahl-Hansen, Anders Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-03)
      <p>Background: Naturalistic Developmental Behavioral Interventions (NDBI) have been evaluated as the most promising interventions for children with autism spectrum disorder. In recent years, a growing body of literature suggests that technological advancements such as Virtual Reality (VR) are promising intervention tools. However, to the best of our knowledge no studies have combined evidence-based ...
    • Synthesis and Evaluation of the Tetracyclic Ring-System of Isocryptolepine and Regioiso-Mers for Antimalarial, Antiproliferative and Antimicrobial Activities 

      Håheim, Katja Stangeland; Lindback, Emil; Tan, Kah Ni; Albrigtsen, Marte; Helgeland, Ida Therese Urdal; Clemence, Lauga; Matringe, Theodora; Kennedy, Emily K.; Andersen, Jeanette Hammer; Avery, Vicky M.; Sydnes, Magne Olav (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-30)
      A series of novel quinoline-based tetracyclic ring-systems were synthesized and evaluated in vitro for their antiplasmodial, antiproliferative and antimicrobial activities. The novel hydroiodide salts 10 and 21 showed the most promising antiplasmodial inhibition, with compound 10 displaying higher selectivity than the employed standards. The antiproliferative assay revealed novel pyridophenanthridine ...
    • Widely rhythmic transcriptome in Calanus finmarchicus during the high Arctic summer solstice period 

      Payton, Laura; Hüppe, Lukas; Noirot, Celine; Hoede, Claire; Last, Kim; Wilcockson, David; Ershova, Elizaveta; Valière, Sophie; Meyer, Bettina (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-10)
      Solar light/dark cycles and seasonal photoperiods underpin daily and annual rhythms of life on Earth. Yet, the Arctic is characterized by several months of permanent illumination (“midnight sun”). To determine the persistence of 24h rhythms during the midnight sun, we investigated transcriptomic dynamics in the copepod <i>Calanus finmarchicus</i> during the summer solstice period in the Arctic, with ...
    • Effects of motion correction, sampling rate and parametric modelling in dynamic contrast enhanced MRI of the temporomandibular joint in children affected with juvenile idiopathic arthritis 

      Starck, Lea; Andersen, Erling; Macíček, Ondřej; Angenete, Oskar W; Augdal, Thomas Angell; Rosendahl, Karen; Jirík, Radovan; Grüner, Renate (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-13)
      The temporomandibular joint (TMJ) is typically involved in 45–87% of children with Juvenile Idiopathic Arthritis (JIA). Accurate diagnosis of JIA is difficult as various clinical tests, including MRI, disagree. The purpose of this study is to optimize the methodological aspects of Dynamic Contrast Enhanced (DCE) MRI of the TMJ in children. In this cross-sectional study, including data from 73 JIA ...
    • Kvasir-Capsule, a video capsule endoscopy dataset 

      Smedsrud, Pia H; Thambawita, Vajira L B; Hicks, Steven; Gjestang, Henrik; Olsen Nedrejord, Oda; Næss, Espen; Borgli, Hanna; Jha, Debesh; Berstad, Tor Jan; Eskeland, Sigrun Losada; Lux, Mathias; Espeland, Håvard; Petlund, Andreas; Dang Nguyen, Duc Tien; Garcia, Enrique; Johansen, Dag; Schmidt, Peter Thelin; Toth, Ervin; Hammer, Hugo Lewi; de Lange, Thomas; Riegler, Michael Alexander; Halvorsen, Pål (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-27)
      Artificial intelligence (AI) is predicted to have profound effects on the future of video capsule endoscopy (VCE) technology. The potential lies in improving anomaly detection while reducing manual labour. Existing work demonstrates the promising benefits of AI-based computer-assisted diagnosis systems for VCE. They also show great potential for improvements to achieve even better results. Also, ...
    • Hazards identification and risk assessment for UAV– assisted bridge inspections 

      Aliyari, Mostafa; Ashrafi, Behrooz; Ayele, Yonas Zewdu (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-07)
      Unmanned Aerial Vehicles (UAV) technology has found its way into several civilian applications in the last 20 years, predominantly due to lower cost and tangible scientific improvements. In its application to structural bridge inspection, UAVs provide two main functions. The first, being the most common, detect damage through visual sensors. The 2 D image data can be used to quickly establish a basic ...
    • Offentlig styring av akvakulturnæringens arealbruk i sjø. En drøftelse om gjeldende rettsregler sikrer at det tas hensyn til andre arealinteresser ved lokalitetsklarering av akvakulturanlegg 

      Lindstad, Morten Coward (Master thesis; Mastergradsoppgave, 2016-06-20)
      En drøftelse om gjeldende rettsregler sikrer at det tas hensyn til andre arealinteresser ved lokalitetsklarering av akvakulturanlegg.
    • Quantifying the consequence of applying conservative assumptions in the assessment of oil spill effects on polar cod (Boreogadus saida) populations 

      de Vries, Pepjin; Tamis, Jacqueline; Nahrgang, Jasmine; Frantzen, Marianne; Jak, Robbert; Klok, Chris; van den Heuvel-Greve, Martine J; Hemerik, Lia (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-23)
      In order to assess the potential impact from oil spills and decide the optimal response actions, prediction of population level effects of key resources is crucial. These assessments are usually based on acute toxicity data combined with precautionary assumptions because chronic data are often lacking. To better understand the consequences of applying precautionary approaches, two approaches for ...
    • Motivating for behavioral change through smart nudging. Evaluating digital representations of psychological effects 

      Gjærum, Isak (Master thesis; Mastergradsoppgave, 2021-05-13)
      This thesis aims to study psychological effects and how to represent them digitally within a smart nudging system. A smart nudging system creates personalized digital nudges that are highly relevant to the user's context. How the system presents the nudges and what psychological effects are used is critical to influencing the user towards the nudging goal. The goal of the thesis is to find, implement ...
    • Idrett som integrasjonsarena - Betydninger av idrettsdeltagelse blant mannlige flyktninger 

      Corneliussen, Alexander Juhl (Master thesis; Mastergradsoppgave, 2021-05-19)
      Hensikten med studien er å undersøke hvilken betydning idrettsdeltagelse har hatt for integrering av mannlige flyktninger. For å undersøke idrettsdeltagelsens betydning for integrering tar studien for seg tre forskningsspørsmål: • Hvordan beskriver flyktningene sine møter med den organiserte idretten? • Hvilke betydninger har idrettsdeltagelse for integrering? • Hva slags betydning tillegger ...