Viser treff 18261-18280 av 36873

    • Atherogenic Lipid Ratios Related to Myeloperoxidase and C-Reactive Protein Levels in Psychotic Disorders 

      Reponen, Elina Johanna; Dieset, Ingrid; Tesli, Martin Steen; Mørch, Ragni Helene; Aas, Monica; Vedal, Trude Seselie Jahr; Haug, Elisabeth; Drange, Ole Kristian; Steen, Nils Eiel; Hope, Sigrun; Szabo, Attila; Gohar, Sherif Mostafa Mohamed Ahmed; Wedervang-Resell, Kirsten; Djurovic, Srdjan; Melle, Ingrid; Aukrust, Pål; Andreassen, Ole Andreas; Ueland, Thor (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-10)
      <p><i>Background:</i> Cardiovascular disease (CVD) is a major cause of premature death in patients with psychotic disorders, where dyslipidemia occurs frequently. In the pathogenesis of these serious mental disorders, a low-grade inflammation seems to be a possible contributor. Concurrently, systemic inflammation and its interplay with dyslipidemia is a central driver in the pathogenesis of CVD. We ...
    • A boundary integral approach to the modeling of surface waves in a wave tank 

      Thygesen, Sander Bøe (Master thesis; Mastergradsoppgave, 2020-06-14)
      Boundary integral equations (BIEs) are used to model surface waves in a wave tank. Assuming an ideal fluid, the velocity of the fluid can be considered as a potential flow and be modeled by the Laplace equation on the domain. The domain in this case will be a section of a wave channel with an incoming wave from the right, a rigid bottom, a reflective wall on the right and a time varying surface that ...
    • Konvergerende og divergerende tankegang i matematisk utforskning. En kvantitativ analyse av elevbesvarelser 

      Ulset, Idunn (Master thesis; Mastergradsoppgave, 2020-06-01)
      Fra og med høsten 2020 vil det være et økt fokus på undersøkende matematikkundervisning i norsk skole på grunn av fagfornyelsen. Dette kommer tydelig frem i de nye læreplanene i matematikk. Formålet med denne studien er å få økt innsikt i hvordan man kan vurdere undersøkende matematikkproblemer, og med det få innsikt i elevenes utgangspunkt i forkant av fagfornyelsen. For å oppnå dette er det utviklet ...
    • Matematisk resonnering og argumentasjon. En kvalitativ studie av elevers resonnering i ulike nivåer av undersøkende undervisning. 

      Bratteng, Julie Astrid Rundmo (Master thesis; Mastergradsoppgave, 2020-05-31)
      Hensikten med studien er å få et innblikk i hvordan elever resonnerer og argumenterer i ulike nivåer av åpenhet i undersøkende matematikkundervisning. I denne studien har jeg besvart på følgende problemstilling: Hvordan resonnerer og argumenterer elever i videregående skole i undersøkende undervisning av ulike nivåer av åpenhet? Studien har en kvalitativ tilnærming og bygger på observasjonsnotater, ...
    • A study of generative adversarial networks to improve classification of microscopic foraminifera 

      Østmo, Eirik Agnalt (Master thesis; Mastergradsoppgave, 2020-05-30)
      Foraminifera are single-celled organisms with shells that live in the marine environment and can be found abundantly as fossils in e.g. sediment cores. The assemblages of different species and their numbers serves as an important source of data for marine, geological, climate and environmental research. Steps towards automatic classification of foraminifera using deep learning (DL) models have ...
    • A bidirectional pulse propagation model for extreme nonlinear optics: derivation and implementation. 

      Korzeniowska, Magdalena (Master thesis; Mastergradsoppgave, 2020-05-13)
      With growing capabilities of high-intensity laser beams to generate ultra-short pulses of light, the simulation of pulse propagation in nonlinear media is expected to catch up with the front-line experimental setups. Among the challenges of nonlinear material response modeling is the ability to capture the back-scatter effect - a phenomenon inherently elusive for the well-established methods of ...
    • Interplanetary dust fluxes observed with Parker Solar Probe 

      Henriksen, Emil Gorseth (Master thesis; Mastergradsoppgave, 2020-06-29)
      The mission Parker Solar Probe (PSP) provides a new opportunity to make in-situ measurements of dust impacts closer to the Sun than ever before, eventually going as close as ∼ 10 solar radii or ∼ 0.05 AU. PSP can measure dust impacts from monopole measurements of the spacecraft’s electric potential to one of its antennas using its FIELDS instrument. In this work impact rates data is compared ...
    • Cross-Phase Based Multi-Camera Video Synchronization Calibration with Sub Frame Rate Accuracy 

      Sivasothy, Pavithiran (Master thesis; Mastergradsoppgave, 2020-06-29)
      In auroral research, it is necessary to accurately measure the time-shift differences between varying light sources. Such measurements can be carried out using two or more digital cameras, or between different regions of an image obtained using a single camera. An example of this is measurements of the time-shifts between prompt auroral emissions originating from different altitude regions during ...
    • Hvordan få trygghet i en kropp som trenger hjelp? - Personer med funksjonsvariasjon sine fortellinger om møter med hjelpeapparatet etter seksuelle overgrep 

      Thunem, Ingrid (Master thesis; Mastergradsoppgave, 2020-05-12)
      Denne masteroppgaven belyser relasjonene mellom hjelpeapparatet og funksjonsvarierte som har opplevd seksuelle overgrep. Hjelpeapparatet defineres som primær- og spesialisthelsetjeneste, samt ansatte i skole og andre hjelpesystemer. Både psykisk og fysisk hjelpeapparat er inkludert i oppgaven. Studiens analyse og diskusjon bidrar med relevante refleksjoner for de som i sitt yrke møter funksjonsvarierte ...
    • Salt-driven evolution of a gas hydrate reservoir in Green Canyon, Gulf of Mexico 

      Portnov, Aleksei D; Cook, Ann E.; Heidari, Mahdi; Sawyer, Derek E.; Nikolinakou, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09)
      The base of the gas hydrate stability zone (GHSZ) is a critical interface, providing a first-order estimate of gas hydrate distribution. Sensitivity to thermobaric conditions makes its prediction challenging particularly in the regions with dynamic pressure-temperature regime. In Green Canyon in the northern Gulf of Mexico (Block GC955), the seismically inferred base of the GHSZ is 450 meters (1476 ...
    • Competitive exclusion after invasion? 

      Bøhn, Thomas; Amundsen, Per-Arne; Sparrow, Ashley (Journal article; Tidsskriftartikkel; Peer reviewed, 2007-07-27)
      The ‘Competitive Exclusion Principle’ is a foundation stone in the understanding of interspecific competition and niche relationships between species. In spite of having the status of a biological law, the principle has limited empirical support. In this study, we document strong effects of competition from the invading fish species vendace <i>Coregonus albula</i> over a 14-year period in the ...
    • Timing is everything: Survival of Atlantic salmon Salmo salar postsmolts during events of high salmon lice densities 

      Bøhn, Thomas; Gjelland, Karl Øystein; Serra Llinares, Rosa Maria; Finstad, Bengt; Primicerio, Raul; Nilsen, Rune; Karlsen, Ørjan; Sandvik, Anne Dagrun; Skilbrei, Ove Tommy; Elvik, Kristine Marit Schrøder; Skaala, Øystein; Bjørn, Pål Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-07)
      <ol> <li>Atlantic salmon in aquaculture act as reservoir hosts and vectors of parasites like salmon lice and this parasite is shown to harm wild salmonid populations.</li> <li>In this study, <i>n</i> = 29,817 tagged Atlantic salmon were studied in four release trials. Half of the released fish were given prophylactic treatment against lice, the other half represented sham control fish. We used ...
    • The rise of a marine generalist predator and the fall of beta diversity 

      Ellingsen, Kari; Yoccoz, Nigel; Tveraa, Torkild; Frank, Kenneth T.; Johannesen, Edda; Anderson, Marti J.; Dolgov, Andrey V.; Shackell, Nancy L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-17)
      Determining the importance of physical and biological drivers in shaping biodiversity in diverse ecosystems remains a global challenge. Advancements have been made towards this end in large marine ecosystems with several studies suggesting environmental forcing as the primary driver. However, both empirical and theoretical studies point to additional drivers of changes in diversity involving trophic ...
    • Study of Wind Flow Angle and Velocity on Ice Accretion of Transmission Line Composite Insulators 

      Huang, Yafei; Virk, Muhammad Shakeel; Xingliang, Jiang (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-18)
      Ice accretion on insulators in cold regions is a serious and inevitable problem for power transmission lines, which may cause over-load and icing flashover accidents and can lead to wide power outage. In this research work, multiphase numerical simulations are carried out to investigate the effect of wind flow angle & velocity on the ice accretion of transmission line composite insulators. To verify ...
    • Succeeding with prolonged usage ofconsumer-based activity trackers in clinicalstudies: a mixed methods approach 

      Henriksen, André; Sand, Anne-Sofie; Deraas, Trygve Sigvart; Grimsgaard, Sameline; Hartvigsen, Gunnar; Hopstock, Laila Arnesdatter (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-27)
      <i>Background</i> - Lack of physical activity (PA) is a risk factor for death and non-communicable disease. Despite this, more than one fourth of adults worldwide do not follow PA guidelines. As part of a feasibility study to test a complex intervention for increasing PA, we included a consumer-based activity tracker (AT) as a tool to measure PA outcomes and to track heart rate during exercise ...
    • Bioeconomic Modelling of Coastal Cod and Kelp Forest Interactions: Co-benefits of Habitat Services, Fisheries and Carbon Sinks 

      Vondolia, Godwin K; Chen, Wenting; Armstrong, Claire W.; Norling, Magnus D (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-26)
      Ecosystem-based fisheries management seeks to expand upon the traditional one-stock fisheries management measures by internalizing the effects of fishing on marine ecosystems, and accounting for biological interactions among marine resources. The fact that marine resources provide multiple, often competing benefits, makes the accomplishment of these ecosystem-based fisheries management objectives ...
    • On polar lows and their formation 

      Stoll, Patrick Johannes (Doctoral thesis; Doktorgradsavhandling, 2020-09-18)
      Polar lows are small, but extreme cyclones that develop in marine polar air mass. They feature one of the largest natural hazards in the polar regions. Their associated strong winds, high waves, substantial amounts of snow fall, low visibility and possibility for ice accumulation on ships and airplanes cause threats for coastal communities and marine operations. Hence, accurate prediction of polar ...
    • Løsningsorientert veiledning i elevsamtaler. Hvordan opplever lærere og elever elevsamtaler basert på en løsningsbasert modell? 

      Grønnvoll, Knut Harald (Master thesis; Mastergradsoppgave, 2020-06-03)
      Sammendrag. Dette har vært en lang prosess som på mange måter startet rundt årtusenskiftet på Selnes skole i Tromsø, hvor rektor en dag kom til meg og spurte om jeg kunne være øvingslærer, som det het da, for fire studenter fra UiT. Dette var starten for min interesse for veiledning. Denne studien er del av et mer langsiktig utviklingsarbeid der siktemålet er å utvikle en løsningsfokusert modell ...
    • "Goddag mann økseskaft". Om læreres perspektiv på opplæring for flerspråklige elever med språk- og/eller kommunikasjonsvansker 

      Lans, Karoline (Master thesis; Mastergradsoppgave, 2020-06-02)
      Flerspråklige elever med språk- og/eller kommunikasjonsvansker er en stor og uensartet gruppe, både når det gjelder norskferdigheter og hvordan språkvanskene kommer til uttrykk. Det er lite forskning tilgjengelig om denne elevgruppen, og den forskningen som finnes handler i stor grad om utredning og i mindre utstrekning om hvilke typer tiltak som vil være passende. Selv om identifisering og ...
    • Skjønn og lokalt utviklingsarbeid i en distriktsskole. Betingelser og prosesser som har betydning for en leders utøvelse av skjønn 

      Engen, Per-Helge (Master thesis; Mastergradsoppgave, 2020-06-02)
      En viktig del av en skoleleders hverdag er å ta avgjørelser. Noen av disse er basert på klare formuleringer i lovverk og forskrifter, mens andre er basert på skjønn. Denne masteroppgaven handler om det siste punktet – betingelser og prosesser som påvirker utøvelsen av skjønn i lokalt utviklingsarbeid. Jeg går tilbake til Aristoteles og ser på hans uttrykk fronêsis, som av mange regnes som opphavet ...