Opin vísindi

Browsing Greinar- HÍ by Title

Browsing Greinar- HÍ by Title

Sort by: Order: Results:

  • Loftsdóttir, Kristín; Mixa, Már Wolfgang (Stofnun stjórnsýslufræða og stjórnmála við Háskóla Íslands, 2017-12-14)
    The multinational retailer, Costco, opened its first store in Iceland during spring 2017. Not only was the opening greatly anticipated but following the store opening, Costco became one of the key issues in the Icelandic media. Our analysis focuses ...
  • Ólafsdóttir, Elín Ásta; Erlingsson, Sigurdur; Bessason, Bjarni (MDPI AG, 2020-08-17)
    The shear wave velocity profile is of primary interest for geological characterization of soil sites and elucidation of near-surface structures. Multichannel Analysis of Surface Waves (MASW) is a seismic exploration method for determination of near-surface ...
  • Gudbrandsdottir, Ingunn Yr; Olafsdottir, Gudrun; Oddsson, Gudmundur V.; Stefánsson, Hlynur; Bogason, Sigurður G. (MDPI AG, 2021-01-08)
    Fairness issues within food systems are of increasing concern for policy makers and other stakeholders. Given the topicality and policy relevance of fairness within food systems, there is value in exploring the subject further. Simulation modelling has ...
  • Mulic, Aida; Arnadottir, Inga Bergmann; Jensdóttir, Þorbjörg; Kopperud, Simen E. (Hindawi Limited, 2018-11-01)
    Dental erosive wear (DEW) is common among children and adolescents, and a survey of Icelandic children showed that 30.7% of 15-year-olds were diagnosed with the condition. Objective. To gain knowledge about dental practitioners’ experiences, opinions, ...
  • Chestnov, I Y; Kavokin, A V; Yulin, A V (IOP Publishing, 2019-11-01)
    The phase and the frequency of an exciton polariton condensate excited by a nonresonant pump can be efficiently manipulated by an external coherent light. Being tuned close to the resonance with the condensate eigenfrequency, the external laser light ...
  • Morina, Skender; Dini, Kevin Tanguy Elian; Iorsh, Ivan; Shelykh, Ivan (American Chemical Society (ACS), 2018-02-12)
    We propose an experimentally friendly scheme for trapping quasi-relativistic electrons in graphene by an electromagnetic beam with circular polarization and a spatially inhomogeneous profile with an intensity dip. The trapping is achieved due to the ...
  • Iorsh, Ivan; Dini, Kevin Tanguy Elian; Kibis, Oleg; Shelykh, Ivan (American Physical Society (APS), 2017-10-11)
    It is shown theoretically that the renormalization of the electron energy spectrum of bilayer graphene with a strong high-frequency electromagnetic field (dressing field) results in the Lifshitz transition—the abrupt change in the topology of the Fermi ...
  • Pedersen, Andreas; Pizzagalli, Laurent; Jónsson, Hannes (IOP Publishing, 2017-06-15)
    Atomic structure of amorphous silicon consistent with several reported experimental measurements has been obtained from annealing simulations using electron density functional theory calculations and a systematic removal of weakly bound atoms. The ...
  • Kwiatkowski, Grzegorz J.; Badarneh, Mohammad H. A.; Berkov, Dmitry V.; Bessarab, Pavel (American Physical Society (APS), 2021-04-29)
    A complete analytical solution to the optimal reversal of a macrospin with easy-axis anisotropy is presented. An optimal control path minimizing the energy cost of the reversal is identified and used to derive the time-dependent direction and amplitude ...
  • Vlasov, Sergei M.; Kwiatkowski, Grzegorz J.; Lobanov, Igor S.; Uzdin, Valery M.; Bessarab, Pavel (American Physical Society (APS), 2022-04-07)
    It is demonstrated by means of the optimal control theory that the energy cost of the spin-orbit torque induced reversal of a nanomagnet with perpendicular anisotropy can be strongly reduced by proper shaping of both in-plane components of the current ...
  • Bjarnason, Thorarinn Arni; Hafþórsson, Steinar O.; Kristinsdóttir, Linda B.; Óskarsdóttir, Erna S.; Aspelund, Thor; Sigurðsson, Sigurður; Gudnason, Vilmundur; Andersen, Karl (Public Library of Science (PLoS), 2017-08-30)
    Background Type 2 diabetes and prediabetes are established risk factors for atherosclerosis. The aim of this study was to evaluate the atherosclerotic plaque burden in the carotid arteries of patients with acute coronary syndrome according to their ...
  • Ingadottir, Arora Ros; Beck, Anne Marie; Baldwin, Christine; Weekes, Christine Elizabeth; Geirsdottir, Olof; Ramel, Alfons; Gislason, Thorarinn; Gunnarsdottir, Ingibjorg (BMJ, 2019-01)
    Introduction Intervention studies have mainly used oral nutritional supplements (ONS) for the management of patients with chronic obstructive pulmonary disease (COPD) identified as at nutritional risk. In this 12-month randomised feasibility trial, we ...
  • Sigfúsdóttir, Sigrún Alda; Einarsdóttir, Jóhanna T.; Karlsson, Þorlákur; Bergþórsdóttir, Íris Ösp (The Educational Research Institute, 2020-07-13)
    Tilgangur rannsóknarinnar var að bera saman áhrif beinnar og óbeinnar orðaforðakennslu hjá börnum með málþroskaröskun. Einkenni málþroskaröskunar er slök færni í tungumálinu, bæði í málskilningi og máltjáningu. Beina orðaforðakennslan fólst í að ...
  • Ragnarsdóttir, Hrafnhildur (Menntavísindasvið, Menntavísindastofnun Háskóla Íslands, 2018-12-31)
    Greinin fjallar um orðaforðahluta rannsóknar á þróun máls og læsis meðal íslenskra barna á aldrinum 4 til 8 ára. Um er að ræða viðamikla langtímarannsókn á flestum þáttum málþroska og tengslum hans við þróun læsis og félagsþroska. Til að bæta úr skorti ...
  • Sævarsson, Elvar Smári; Svansdottir, Erla; Sveinsson, Thorarinn; Asgeirsdottir, Tinna Laufey; Arngrímsson, Sigurbjörn Árni; Johannsson, Erlingur (SAGE Publications, 2017-06-30)
    Aims: The aims of this study were to study the correlation between lifestyle-related factors, such as organized leisure-time sport participation (OLSP), cardiorespiratory fitness, and adiposity, and academic achievement among preadolescents. Methods: ...
  • Walter, Ryan P.; Roy, Denis; Hussey, Nigel E.; Stelbrink, Björn; Kovacs, Kit M.; Lydersen, Christian; McMeans, Bailey C.; Svavarsson, Jörundur; Kessel, Steven T.; Biton Porsmoguer, Sebastián; Wildes, Sharon; Tribuzio, Cindy A.; Campana, Steven; Petersen, Stephen D.; Grubbs, R. Dean; Heath, Daniel D.; Hedges, Kevin J.; Fisk, Aaron T. (Wiley-Blackwell, 2017-09-08)
    erein, we use genetic data from 277 sleeper sharks to perform coalescent-based modeling to test the hypothesis of early Quaternary emergence of the Greenland shark (Somniosus microcephalus) from ancestral sleeper sharks in the Canadian Arctic-Subarctic ...
  • Þorsteinsson, Gísli; Ólafsson, Brynjar; Yokoyama, Etsuo (Institute of Technology and Vocational Education, Graduate School of Education and Human Development, Nagoya University, 2015-10-31)
    Pedagogically aimed craft education, or Sloyd, was established in Scandinavia at the close of the 19th century as a specific subject to be included in general education. The term Sloyd means skilful or handy and refers to the making of crafts (Chessin, ...
  • Guðmundsdóttir, Sigríður; Vendramin, Niccoló; Cuenca, Argelia; Sigurðardóttir, Heiða; Kristmundsson, Árni; Iburg, Tine Moesgaard; Olesen, Niels Jørgen (Wiley, 2018-11-05)
    A novel viral haemorrhagic septicaemia virus (VHSV) of genotype IV was isolated from wild lumpfish (Cyclopterus lumpus), brought to a land-based farm in Iceland, to serve as broodfish. Two groups of lumpfish juveniles, kept in tanks in the same facility, ...
  • Blimark, Cecilie Hveding; Turesson, Ingemar; Genell, Anna; Ahlberg, Lucia; Björkstrand, Bo; Carlson, Kristina; Forsberg, Karin; Juliusson, Gunnar; Linder, Olle; Mellqvist, Ulf-Henrik; Nahi, Hareth; Kristinsson, Sigurður Yngvi (Ferrata Storti Foundation (Haematologica), 2017-12-07)
    Epidemiology and outcome of myeloma are mainly reported from large university centers and collaborative groups, and do not represent ‘real-world’ patients. The Swedish Myeloma Registry is a prospective population-based registry documenting characteristics, ...
  • Sæþórsdóttir, Anna; Hall, Colin Michael; Wendt, Margrét (MDPI AG, 2020-09-08)
    Iceland has been one of the main destinations that have been incorporated into the discourse of overtourism. However, Iceland is different to many other supposed overtourism destinations in that its tourism is based on natural areas. Nevertheless, ...