Now showing items 2608-2627 of 2767

    • Ultrafast Polarization Switching in BaTiO<inf>3</inf> Nanomaterials: Combined Density Functional Theory and Coupled Oscillator Study 

      Zhilyaev, Petr; Brekhov, Kirill; Mishina, Elena; Tantardini, Christian (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-17)
      The challenge of achieving ultrafast switching of electric polarization in ferroelectric materials remains unsolved as there is no experimental evidence of such switching to date. In this study, we developed an enhanced model that describes switching within a two-dimensional space of generalized coordinates at THz pulses. Our findings indicate that stable switching in barium titanate cannot be ...
    • Unattended Pregnancies and Perinatal Mortality in Georgia 

      Manjavidze, Tinatin; Rylander, Charlotta; Skjeldestad, Finn Egil; Kazakhashvili, Nata; Anda, Erik Eik (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-15)
      <p><i>Introduction:</i> The majority of pregnant women in Georgia attend the free-of-charge, national antenatal care (ANC) programme, but over 5% of pregnancies in the country are unattended. Moreover, Georgia has one of the highest perinatal mortality (PM) rates in Europe (11.7/1000 births). <p><i>Purpose:</i> To assess the association between unattended pregnancies and the risk of PM. <p><i>Methods:</i> ...
    • Uncertainty modeling and interpretability in convolutional neural networks for polyp segmentation 

      Wickstrøm, Kristoffer Knutsen; Kampffmeyer, Michael C.; Jenssen, Robert (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-01)
      Convolutional Neural Networks (CNNs) are propelling advances in a range of different computer vision tasks such as object detection and object segmentation. Their success has motivated research in applications of such models for medical image analysis. If CNN-based models are to be helpful in a medical context, they need to be precise, interpretable, and uncertainty in predictions must be well ...
    • Understanding how and under what circumstances decision coaching works for people making healthcare decisions: a realist review 

      Zhao, Junqiang; Jull, Janet; Finderup, Jeanette; Smith, Maureen; Kienlin, Simone Maria; Rahn, Anne Christin; Dunn, Sandra; Aoki, Yumi; Brown, Leanne; Harvey, Gillian; Stacey, Dawn (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-08)
      Background - Decision coaching is non-directive support delivered by a trained healthcare provider to help people prepare to actively participate in making healthcare decisions. This study aimed to understand how and under what circumstances decision coaching works for people making healthcare decisions.<p> <p>Methods - We followed the realist review methodology for this study. This study was ...
    • Understanding recent trends in incidence of invasive breast cancer in Norway: age-period-cohort analysis based on registry data on mammography screening and hormone treatment use 

      Weedon-Fekjær, Harald; Bakken, Kjersti; Vatten, Lars Johan; Tretli, Steinar (Journal article; Tidsskriftartikkel; Peer reviewed, 2012-01-30)
      Objective To quantify the separate contributions of menopausal hormone treatment and mammography screening activities on trends in incidence of invasive breast cancer between 1987 and 2008.<p> <p>Design Population study using aggregated data analysed by an extended age-period-cohort model. <p>Setting Norway. <p>Population Norwegian women aged 30-90 between 1987 and 2008, including 50 102 newly ...
    • Understanding researchers’ intention to publish in open access journals 

      Moksness, Lars; Olsen, Svein Ottar (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08)
      <i>Purpose</i> – The purpose is to understand how attitudes, norms (injunctive and descriptive), and perceived behavioral control (PBC) (capacity and autonomy) influence intention to publish Open Access (OA), and how personal innovativeness in information technology (PIIT) affects attitude and PBC.<p> <p><i>Design/methodology/approach</i> – This study employs an integrated and extended theory of ...
    • Understanding why impact assessment fails; a case study of theory and practice from Wafi-Golpu, Papua New Guinea 

      Roche, Charles; Brueckner, Martin; Walim, Nawasio; Sindana, Howard; John, Eugene (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-24)
      From an instrumental or management perspective, impact assessment (IA) is a process of identifying impacts, finding solutions and achieving project approval. A recipient community, however, has a completely different perspective. For them the IA is about living with impacts, individually and collectively, perhaps over generations, and contested processes of self-determination, consultation and ...
    • Understanding “Symptoms Associated with Environmental Factors” (SAEF) in buildings; e.g. “sick building syndrome”, “electromagnetic hypersensitivity” and “multiple chemical sensitivity” 

      Haanes, Jan Vilis (Chapter; Bokkapittel, 2021)
      The field of buildings, health and human experiences may be divided between conditions (a) with scientific support for causal relations between exposure and health effects, e.g. dampness in buildings and asthma exacerbation; (b) lacking such scientific support, e.g. “sick building syndrome” (SBS). b) conditions are often disregarded as imaginations, psychogenic etc. Traditional ideas are (1) ...
    • Underwater Hyperspectral Imaging of Arctic Macroalgal Habitats during the Polar Night Using a Novel Mini-ROV-UHI Portable System 

      Summers, Natalie; Johnsen, Geir; Mogstad, Aksel Alstad; Løvås, Håvard; Fragoso, Glaucia Moreira; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-09)
      We describe an Underwater Hyperspectral Imager (UHI) deployed on an instrumentcarrying platform consisting of two interconnected mini-ROVs (Remotely Operated Vehicle) for the mapping and monitoring of Arctic macroalgal habitats in Kongsfjorden (Svalbard) during the Polar Night. The mini-ROV-UHI system is easy to transport, assemble and deploy from shore, even under the dark, icy and cold conditions ...
    • Unfounded claims about productivity beyond density for reindeer pastoralism systems 

      Stien, Audun; Tveraa, Torkild; Ims, Rolf Anker; Stien, Jennifer; Yoccoz, Nigel (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-22)
      We point out problems with the article Productivity beyond density: A critique of management models for reindeer pastoralism in Norway by Marin and co-workers published in Pastoralism in 2020. In our opinion, there are several misleading claims about the governance of the reindeer pastoralist system in Norway, the Røros model for herd management and density dependence in reindeer herds in their ...
    • A unified platform to manage, share, and archive morphological and functional data in insect neuroscience 

      Heinze, Stanley; el Jundi, Basil; Berg, Bente Gunnveig; Homberg, Uwe; Menzel, Randolf; Pfeiffer, Keram; Hensgen, Ronja; Zittrell, Frederick; Dacke, Marie; Warrant, Eric; Pfuhl, Gerit; Rybak, Jürgen; Tedore, Kevin (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-24)
      Insect neuroscience generates vast amounts of highly diverse data, of which only a small fraction are findable, accessible and reusable. To promote an open data culture, we have therefore developed the InsectBrainDatabase (IBdb), a free online platform for insect neuroanatomical and functional data. The IBdb facilitates biological insight by enabling effective cross-species comparisons, by linking ...
    • Unique stable isotope signatures of large cyclonic events as a tracer of soil moisture dynamics in the semiarid subtropics 

      Skrzypek, Grzegorz; Dogramaci, Shawan; Page, Gerald; Rouillard, Alexandra; Grierson, Pauline (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-09)
      Evaporative flux from soils in arid and semi-arid climates can be very high and may substantially reduce soil moisture retained between infrequent rainfall events. Direct measurement of the evaporative losses from soils is technically challenging. However, environmental tracers such as water stable hydrogen and oxygen isotope composition can be used to calculate evaporation rates if the initial ...
    • Universitetsbibliotekets brukerundersøkelse 2019 

      Enger, Marit Bull; Løkholm Bergli, Kjærsti; Nordström, Linnea (Others; Andre, 2019-11-20)
      Følgende gruppe ble satt ned for å jobbe med utvikling av brukerundersøkelsen for Universitetsbiblioteket (UB): Kjærsti Løkholm Bergli, Linnea Nordström, Erik Lieungh og Marit Bull Enger. Gruppen fikk også hjelp av Trine Sand Bakken til distribuering av undersøkelsen til alle studenter og ansatte ved UiT. Mariann Løkse leste korrektur på den norske versjonen og Marjorie Fry leste korrektur på den ...
    • Universitetsbibliotekets brukerundersøkelse 2022 

      Sarre, Aili; Nordström, Linnea; Enger, Marit Bull; Lillejord, Stian (Others; Andre, 2023-02-16)
      Arbeidet med Universitetsbibliotekets brukerundersøkelse 2022 ble gjennomført av Aili Sarre, Linnea Nordström, Marit Bull Enger og Stian Lillejord. Gruppen ble satt ned høsten 2021 og startet arbeidet i november 2021. Oversettelse til engelsk ble gjort av Ellen Nierenberg. <p> <p>Dette er den tredje undersøkelsen Universitetsbiblioteket har gjennomført med et intervall på om lag tre år. Denne ...
    • The University of Tromsø adopts an institutional Open Access policy 

      Frantsvåg, Jan Erik (Journal article; Tidsskriftartikkel, 2010)
    • Unseen existences: Stories of life from Venembeli, Papua New Guinea 

      Roche, Charles; Spencer, Rochelle; John, Eugene; Walim, Nawasio; Sindana, Howard (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-23)
      This article presents stories of life from Venembeli, a remote village in the hinterlands of Papua New Guinea. Caught up in a contentious mining development, villagers both long for and fear the development promised by global capitalism. But with a forty year development history, the proposed Wafi-Golpu mine has become the only lens through which the present or future is imagined and understood. We ...
    • Updated checklist of Norwegian Mycetophilidae (Diptera) with 92% DNA barcode reference coverage. 

      Kjærandsen, Jostein; Søli, Geir Einar Ellefsen (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
      Up to present 602 species and 65 genera of fungus gnats, family Mycetophilidae, are published from Norway. Extensive collecting supported by the Norwegian Biodiversity Information Centre (NBIC) over the eight last years, with special focus on insect fauna in northern Norway, has documented 240 additional species and 2 additional genera from Norway, of which 118 species are considered as new to ...
    • Updates from the Global Dataverse Community Consortium (GDCC) 

      Conzett, Philipp; Crabtree, Jonathan; Myers, James (Conference object; Konferansebidrag, 2022)
    • Updates from the Global Dataverse Community Consortium (GDCC) 

      Conzett, Philipp; Crabtree, Jonathan; Myers, James (Conference object; Konferansebidrag, 2023-06)
    • Updating in the mountains: A sensemaking perspective on ski guiding 

      Løland, Stig; Søreide, Maria Nordbø; Hällgren, Markus; Hetland, Audun (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-22)
      For a ski guide, updating on the ever-changing natural conditions and group dynamics is essential to stay safe and provide a good experience for clients. In this paper, we explore how guides update their understanding in the mountains. Our data arise out of a one-season participant ethnography of ski guiding in Norway. The research team had two authors collecting data, one as an “outsider” and another ...