• Early- and Late-Time Behavior of Attractors in Heavy-Ion Collisions 

      Kurkela, Aleksi; van der Schee, Wilke; Wiedemann, Urs Achim; Wu, Bin (Peer reviewed; Journal article, 2020)
      Whether, how, and to what extent solutions of Bjorken-expanding systems become insensitive to aspects of their initial conditions is of importance for heavy-ion collisions. Here we study 1+1D and phenomenologically relevant ...
    • Effect of additives, ball milling and isotopic exchange in porous magnesium borohydride 

      Heere, Michael; Zavorotynska, Olena; Deledda, Stefano; Sørby, Magnus Helgerud; Book, David; Steriotis, Theodore; Hauback, Bjørn (Journal article; Peer reviewed, 2018-08)
      Magnesium borohydride (Mg(BH4)2) is a promising material for solid state hydrogen storage. However, the predicted reversible hydrogen sorption properties at moderate temperatures have not been reached due to sluggish ...
    • Effect of Interactions on the Quantization of the Chiral Photocurrent for Double-Weyl Semimetals 

      Mandal, Ipsita (Peer reviewed; Journal article, 2020-06)
      The circular photogalvanic effect (CPGE) is the photocurrent generated in an optically active material in response to an applied AC electric field, and it changes sign depending on the chirality of the incident circularly ...
    • The effect of mission duration on LISA science objectives 

      Amaro Seoane, Pau; Arca Sedda, Manuel; Babak, Stanislav; Berry, Christopher P. L.; Berti, Emanuele; Bertone, Gianfranco; Blas, Diego; Bogdanović, Tamara; Bonetti, Matteo; Breivik, Katelyn; Brito, Richard; Caldwell, Robert; Capelo, Pedro R.; Caprini, Chiara; Cardoso, Vitor; Carson, Zack; Chen, Hsin-Yu; Chua, Alvin J. K.; Dvorkin, Irina; Haiman, Zoltan; Heisenberg, Lavinia; Isi, Maximiliano; Karnesis, Nikolaos; Kavanagh, Bradley J.; Littenberg, Tyson B.; Mangiagli, Alberto; Marcoccia, Paolo; Maselli, Andrea; Nardini, Germano; Pani, Paolo; Peloso, Marco; Pieroni, Mauro; Ricciardone, Angelo; Sesana, Alberto; Tamanini, Nicola; Toubiana, Alexandre; Valiante, Rosa; Vretinaris, Stamatis; Weir, David J.; Yagi, Kent; Zimmerman, Aaron (Peer reviewed; Journal article, 2022)
      The science objectives of the LISA mission have been defined under the implicit assumption of a 4-years continuous data stream. Based on the performance of LISA Pathfinder, it is now expected that LISA will have a duty ...
    • Effective kinetic description of event-by-event pre-equilibrium dynamics in high-energy heavy-ion collisions 

      Kurkela, Aleksi; Mazeliauskas, Aleksas; Paquet, Jean-Francois; Schlichting, Sören; Teaney, Derek (Peer reviewed; Journal article, 2019)
      We develop a macroscopic description of the space-time evolution of the energy-momentum tensor during the pre-equilibrium stage of a high-energy heavy-ion collision. Based on a weak coupling effective kinetic description ...
    • Elementær grafteori: Stier og relaterte egenskaper 

      Rødne, Marlén Rørtveit (Bachelor thesis, 2022)
      I denne oppgaven skal jeg presentere generell grafteori, og hvordan en kan anvende dette i klasserommet. Til å begynne med presenterer jeg generell teori og definisjoner innen grafer, før jeg tar for meg to ulike eksempler ...
    • En introdukjsion til kodeteori og AG koder 

      Hetland, Ansgar Lund (Master thesis, 2021)
      Hensikten med denne masteroppgaven er å gi en generell innføring til kodingsteori og feilrettingskoder. Oppgaven benytter seg av boka CODING THEORY et første kurs av Henk C.A. van Tilborg for å beskrive og vise hvordan ...
    • En lærers undervisningsarbeid knyttet til elevers arbeid med kontekstbaserte matematikkoppgaver gjennom dialogbasert undervisning på 6.trinn. 

      Skjørestad, Marita (Masteroppgave/UIS-HF-IGIS/2020;, Master thesis, 2020-06-12)
      Dialogbasert undervisning har fått en større plass i forskningen på matematikkundervisning de siste årene, noe som også har påvirket utformingen av den nye læreplanen som iverksettes høsten 2020. I dialogbasert undervisning ...
    • En sammenligning av prissvingninger mellom Brent råolje og drivstoffpriser i Stavanger - en algoritmisk modell for tanking 

      Nes, Ola (Master thesis, 2021)
      Denne avhandlingen undersøker og sammenligner volatiliteten i drivstoffmarkedet i Stavanger og Brent råolje. Bensin- og dieselpriser er samlet inn fra bensinstasjoner i Stavanger i 2020 og 2021, og brukes til oppgavens ...
    • En statistisk analyse av strømprisen i NO2 

      Sigbjørnsen, Benjamin (Bachelor thesis, 2022)
      Denne oppgaven ser på hva som påvirker strømprisen i prisområdet NO2 på strømbørsen Nord Pool. NO2 er prisområdet til Sørvest-Norge. Strømprisen i Norge bestemmes av tilbud og etterspørsel. Tilbudet av strøm avhenger av hvor ...
    • Environmental risk assessment of combined effects in aquatic ecotoxicology: A discussion paper 

      Beyer, Jonny; Petersen, Karina; Song, You; Ruus, Anders; Grung, Merete; Bakke, Torgeir Heggelund; Tollefsen, Knut-Erik (Peer reviewed; Journal article, 2014)
      Environmental regulatory edicts within the EU, such as the regulatory framework for chemicals REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals), the Water Framework Directive (WFD), and the Marine ...
    • EPW Cubes 

      Iliev, Atanas; Kapustka, Grzegorz; Kapustka, Michal; Ranestad, Kristian (Journal article; Peer reviewed, 2016-08)
      We construct a new 20-dimensional family of projective six-dimensional irreducible holomorphic symplectic manifolds. The elements of this family are deformation equivalent with the Hilbert scheme of three points on a K3 ...
    • Equivalences between Calabi–Yau manifolds and roofs of projective bundles 

      Rampazzo, Marco (PhD thesis UiS;, Doctoral thesis, 2021-04)
      It is conjectured that many birational transformations, called K-inequalities, have a categorical counterpart in terms of an embedding of derived categories. In the special case of simple K-equivalence (or more generally ...
    • Error Correcting Codes and BCH codes 

      Kårstad, Jardar Olav Jøsendal. (Master thesis, 2021)
      One of the central topics in coding theory is the study of error detection and correction, where codes are used to ensure that the correct information can be extracted from a message or storage, even if an error occurs ...
    • Essays in statistics and econometrics 

      Osmundsen, Kjartan Kloster (PhD thesis UiS; 523, Doctoral thesis, 2020-05)
      Helped by cheaper data computation, companies make more use of sophisticated statistical analysis in decision making and economic management. In the dissertation I evaluate and develop statistical methods and apply them ...
    • Estimating and Forecasting of Dynamic linear Gaussian State Space Models for Commodity Futures 

      Holen, Anders (Masteroppgave/UIS-TN-IMF/2019;, Master thesis, 2019-06-14)
      The Kalman filter is used to estimate the parameters and forecast the observations in a dynamic Nelson-Siegel model a linear Gaussian state space representation for futures contracts on the commodities oil, natural gas, ...
    • Estimating the Competitive Storage Model with Stochastic Trends in Commodity Prices 

      Osmundsen, Kjartan Kloster; Kleppe, Tore Selland; Liesenfeld, Roman; Oglend, Atle (Peer reviewed; Journal article, 2021)
      We propose a State-Space Model (SSM) for commodity prices that combines the competitive storage model with a stochastic trend. This approach fits into the economic rationality of storage decisions and adds to previous ...
    • Evidence for quark-matter cores in massive neutron stars 

      Annala, Eemeli; Gorda, Tyler; Kurkela, Aleksi; Nättilä, Joonas; Vuorinen, Aleksi (Peer reviewed; Journal article, 2020-06)
      The theory governing the strong nuclear force—quantum chromodynamics—predicts that at sufficiently high energy densities, hadronic nuclear matter undergoes a deconfinement transition to a new phase of quarks and gluons1. ...
    • Exact Solutions of the Field Equations for Empty Space in the Nash Gravitational Theory 

      Aadne, Matthew Terje; Grøn, Øyvind (Journal article; Peer reviewed, 2017-02)
      John Nash has proposed a new theory of gravity. We define a Nash-tensor equal to the curvature tensor appearing in the Nash field equations for empty space, and calculate its components for two cases: 1. A static, spherically ...
    • Exceptional nonrelativistic effective field theories with enhanced symmetries 

      Brauner, Tomas (Peer reviewed; Journal article, 2021)
      We initiate the classification of nonrelativistic effective field theories (EFTs) for Nambu-Goldstone (NG) bosons, possessing a set of redundant, coordinate-dependent symmetries. Similarly to the relativistic case, such ...