Blar i Department of Mathematics and Physics (TN-IMF) på tittel

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    • Lithiation of Carbon terminated silicon Carbide Surface 

      Forcham, Gana Kingsly (Masteroppgave/UIS-TN-IMF/2019;, Master thesis, 2019-06-14)
      With the aim of searching for a promising Anode material for lithium ion batteries, quantum espresso modelling of the introduction of Lithium into the carbon terminated Silicon Carbide (SiC) Surface layers with the bottom ...

    • Lithiation of Silicon Carbide. 

      Acharya, Sushil (Masteroppgave/UIS-TN-IMF/2018;, Master thesis, 2018-06-15)
      Nowadays, different material like: lithium, silicon, germanium and tin are under investigation as possible anode materials for Lithium ion batteries (LIBs.) The function of anode in LIB is to accommodate the lithium ion ...

    • Log-density gradient covariance and automatic metric tensors for Riemann manifold Monte Carlo methods 

      Kleppe, Tore Selland (Peer reviewed; Journal article, 2023)
      A metric tensor for Riemann manifold Monte Carlo particularly suited for nonlinear Bayesian hierarchical models is proposed. The metric tensor is built from symmetric positive semidefinite log-density gradient covariance ...

    • Lokal trendestimering av Covid-19-smitte ved bayesiansk analyse 

      Adrian Serigstad (Bachelor thesis, 2021)
      Dette studiet tar for seg trendmodellen for Covid-19-smitte publisert i Stavanger Aftenblad. Hensikten er å videreformidle trendmodellens bayesianske bakteppe og fremheve bayesiansk analyse som metode for estimering under ...

    • Low Z-4OHtam concentrations are associated with adverse clinical outcome among early stage premenopausal breast cancer patients treated with adjuvant tamoxifen 

      Helland, Thomas; Naume, Bjørn; Hustad, Steinar; Bifulco, Ersilia; Kvaløy, Jan Terje; Sætersdal, Anna Barbro; Synnestvedt, Marit; Lende, Tone Hoel; Gilje, Bjørnar; Mjaaland, Ingvil; Weyde, Kjetil; Blix, Egil Støre; Wiedswang, Gro; Borgen, Elin; Hertz, Daniel Louis; Janssen, Emiel; Mellgren, Gunnar; Søiland, Håvard (Peer reviewed; Journal article, 2020)
      Low steady‐state levels of active tamoxifen metabolites have been associated with inferior treatment outcomes. In this retrospective analysis of 406 estrogen receptor‐positive breast cancer (BC) patients receiving adjuvant ...

    • Mapping of misconceptions concerning the carbon cycle - a quantitative survey of students in lower secondary and upper secondary school. 

      Lunde, Eirik Midbøe (Master thesis, 2022)
      This study aims to map what misconceptions students in lower secondary and upper secondary school possess concerning the carbon cycle. Data was gathered quantitatively using an anony- mous survey. Over 200 students from ...

    • Markov chain Monte Carlo 

      Nordhaug, Benjamin Hansen (Bachelor thesis, 2022)
      Denne bachelor avhandlingen går tar for seg Markovkjede og introduserer Metropolis-Hastings algoritmer. Avhandlingen går mer dypt inn i diskret tid Markovkjede. Metropolis-Hastings algoritme en type Markovkjede Monte Carlo. ...

    • Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory 

      Kurkela, Aleksi; Mazeliauskas, Aleksas; Paquet, Jean-Francois; Schlichting, Sören; Teaney, Derek (Peer reviewed; Journal article, 2019-03)
      High-energy nuclear collisions produce a nonequilibrium plasma of quarks and gluons which thermalizes and exhibits hydrodynamic flow. There are currently no practical frameworks to connect the early particle production in ...

    • Mathematical Analysis of Two Competing Cancer Cell Migration Mechanisms Driven by Interstitial Fluid Flow 

      Evje, Steinar; Winkler, Michael (Peer reviewed; Journal article, 2020-04)
      Recent experimental work has revealed that interstitial fluid flow can mobilize two types of tumor cell migration mechanisms. One is a chemotactic-driven mechanism where chemokine (chemical component) bounded to the ...

    • Mathematical and Numerical Aspects of Scalar Nonlinear Conservation Laws 

      Bhatti, Farrukh Abbas (Master thesis, 2023)
      This thesis delves deeply into numerical solutions to nonlinear conservation laws. It focuses largely on the Method of Characteristics, its application in solving conservation laws, and the implementation of solutions in ...

    • A mathematical approach to Wick rotations 

      Helleland, Christer (PhD thesis UiS;536, Doctoral thesis, 2020-09)
      In this thesis we define Wick-rotations mathematically using pseudo-Riemannian geometry, and relate Wick-rotations to real geometric invariant theory (GIT). We discover some new results concerning the existence of Wick ...

    • The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range 

      Sedda, Manuel Arca; Berry, Christopher P. L.; Jani, Karan; Amaro-Seoane, Pau; Auclair, Pierre; Baird, Jonathon; Baker, Tessa; Berti, Emanuele; Breivik, Katelyn; Caprini, Chiara; Chen, Xian; Doneva, Daniela; Ezquiaga, Jose M.; Ford, K. E. Saavik; Katz, Michael L.; Kolkowitz, Shimon; McKernan, Barry; Mueller, Guido; Nardini, Germano; Shao, Lijing; Tamanini, Nicola; Warburton, Niels; Witek, Helvi; Wong, Kaze; Zevin, Michael (Peer reviewed; Journal article, 2021-04)
      Since 2015 the gravitational-wave observations of LIGO and Virgo have transformed our understanding of compact-object binaries. In the years to come, ground-based gravitational-wave observatories such as LIGO, Virgo, and ...

    • Modelling fire occurrences in heavy goods vehicles in Norwegian road tunnels 

      Njå, Ådne (Masteroppgave/UIS-TN-IMF/2019;, Master thesis, 2019-06-15)
      This master thesis project has been organized to scrutinize current incident data on near fires and fully developed fires in Norwegian road tunnels longer than 500 meter. This length is chosen because it is assumed that ...

    • Modified Kerr and Black Hole Ringdowns 

      Ahmed, Zaryab (Master thesis, 2023)
      In the post-merger phase of a black hole binary system, the remnant object is a perturbed black hole emitting gravitational radiation in the form of Gravitational Waves (quasi-normal modes) before admitting a stable state. ...

    • Multimessenger Constraints for Ultradense Matter 

      Annala, Eemeli; Gorda, Tyler; Katerini, Evangelia; Kurkela, Eero Aleksi; Nättilä, Joonas; Paschalidis, Vasileios; Vuorinen, Aleksi (Peer reviewed; Journal article, 2022)
      Recent rapid progress in neutron-star (NS) observations offers great potential to constrain the properties of strongly interacting matter under the most extreme conditions. In order to fully exploit the current observational ...

    • Multimode Quasinormal Spectrum from a Perturbed Black Hole 

      Capano, Collin D.; Cabero, Miriam; Westerweck, Julian; Abedi, Jahed; Kastha, Shilpa; Nitz, Alexander H.; Wang, Yi-Fan; Nielsen, Alex Bentley; Krishnan, Badri (Peer reviewed; Journal article, 2023)
      When two black holes merge, the late stage of gravitational wave emission is a superposition of exponentially damped sinusoids. According to the black hole no-hair theorem, this ringdown spectrum depends only on the mass ...

    • Multivariate Statistics 

      Wighus, Stian Hammerseth (Bachelor thesis, 2023)
      This bachelor thesis provides an introduction to multivariate statistics, which is the analysis of data with multiple variables using statistical methods. The thesis focuses on the generalization of the normal distribution ...

    • New benchmarks in the modelling of X-ray atomic form factors 

      Thorkildsen, Gunnar (Peer reviewed; Journal article, 2023)
      Analytical representations of X-ray atomic form factor data have been determined. The original data, f0(s;Z), are reproduced to a high degree of accuracy. The mean absolute errors calculated for all s = sin θ/λ and Z values ...

    • New G2-conifolds in M-theory and their field theory interpretation 

      Svanes, Eirik Eik; Acharya, Bobby S.; Foscolo, Lorenzo; Najjar, Marwan (Peer reviewed; Journal article, 2021)
      A recent theorem of Foscolo-Haskins-Nordström [1] which constructs complete G2-holonomy orbifolds from circle bundles over Calabi-Yau cones can be utilised to construct and investigate a large class of generalisations of ...

    • New tests for trend in time censored recurrent event data 

      Lindqvist, Bo Henry; Kvaløy, Jan Terje (Peer reviewed; Journal article, 2024-01)
      We consider testing for trend in recurrent event data. More precisely, for such data we consider testing of the null hypothesis of data coming from a renewal process. The new tests are essentially obtained by considering ...