Recent additions

  • Eilertsen-bløffen 

    Fredriksen, Hege-Beate (Chronicle; Kronikk, 2015-06-27)
    Kristian Eilertsen i Troms FRP prøver i Nordlys 24. juni febrilsk å justere fakta etter sine politiske oppfatninger – og ikke motsatt – når han oppdager at seriøse argumenter mot menneskeskapte klimaendringer forsvinner ...
  • En investering i tvil 

    Fredriksen, Hege-Beate (Journal article; Tidsskriftartikkel, 2015-07-30)
    Ifølge Ole Henrik Ellestads innlegg i Nordlys 20. juli er alle modeller som ikke stemmer overens med observasjoner gale. Det kan man godt si, men det betyr at alle modeller er gale. En modell er en forenklet versjon av ...
  • The Unidirectional Pulse Propagation Equation for Cylindrical Vector modes 

    Nilsen, Vegard (Master thesis; Mastergradsoppgave, 2015-07-27)
    A new model for the unidirectional pulse propagation equations (UPPE) was developed by Per Jacobsen[1], this model is based on the assumption of cylindrical vector (CV) modes. The model will be strong for CV type electrical ...
  • Regional melt-pond fraction and albedo of thin Arctic first-year drift ice in late summer 

    Divine, Dmitry V; Granskog, Mats A.; Hudson, Stephen R.; Pedersen, Christina Alsvik; Karlsen, Tor Ivan; Divina, S.A.; Renner, Angelika; Gerland, Sebastian (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-09)
    The paper presents a case study of the regional ( ≈ 150 km) morphological and optical properties of a relatively thin, 70–90 cm modal thickness, first-year Arctic sea ice pack in an advanced stage of melt. The study ...
  • Arctic tipping points 

    Smolkova, Valentina (Master thesis; Mastergradsoppgave, 2015-05-15)
    The Arctic is warming much faster than the entire planet, and this causes severe melting of sea ice. However, the climate of different regions of the Earth is interconnected, and changes in the amount of ice in the Arctic ...
  • Tipping points and crises in financial markets 

    Shemyakina, Polina (Master thesis; Mastergradsoppgave, 2015-05-15)
    Electricity spot markets and other financial markets are complex systems, and it is difficult to forecast their behaviour, especially uncontrolled and unmanageable situations, such as power crises and deflation of financial ...
  • Separation of fish stocks by otoliths: Image representation, Fourier approximation and discrimination 

    Hagen, Reidar Strand (Master thesis; Mastergradsoppgave, 2015-05-18)
    In this thesis the entire process of Fourier Contour Analysis have been investigated for potential sources of bias. No potential biases has been found when creating the contour, however it has been shown there is a slight ...
  • Simplicial complexes, Demi-matroids, Flag of linear codes and pair of matroids. 

    Zubair, Ali (Master thesis; Mastergradsoppgave, 2015-05-15)
    We first describe linear error-correcting codes, and show how many of their most important properties are determined by their associated matroids . We also introduce the simplicial complex of the independent sets of a ...
  • Homological methods applied to theory of codes and matroids 

    Karpova, Anna (Master thesis; Mastergradsoppgave, 2015-05-15)
    In this thesis we first give a survey of linear error-correcting codes, and how many of their most important properties only depend on the matroids derived from their parity check matrices. We also introduce the Stanley-Reisner ...
  • Towers of Betti Numbers of Matroids and Weight Distribution of Linear Codes and their Duals 

    Huerga Represa, Violeta (Master thesis; Mastergradsoppgave, 2015-05-15)
    The main notion behind the study of matroids is linear dependence. In this thesis, we give a survey of the concepts and properties of linear error-correcting codes over finite fields being dependent only on the matroids ...
  • A Multiscale Wavelet-Based Test for Isotropy of Random Fields on a Regular Lattice 

    Thon, Kevin Otto; Geilhufe, Marc; Percival, Donald B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
  • 2d gauge theories and generalized geometry 

    Salnikov, Vladimir; Strobl, Thomas; Kotov, Oleksii (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
  • A semiautomatic tool for prostate segmentation in radiotherapy treatment planning 

    Schulz, Jörn; Skrøvseth, Stein Olav; Tømmerås, Veronika Kristine; Marienhagen, Kirsten; Godtliebsen, Fred (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
  • Symmetry transformation groups and differential invariants 

    Schneider, Eivind (Master thesis; Mastergradsoppgave, 2014-11-15)
    There exists a local classification of finite-dimensional Lie algebras of vector fields in two complex dimensions. We lift the Lie algebras from this classification to three complex dimensions.
  • The formation of optical shocks for paraxial pulses propagating in weakly nonlinear and weakly dispersive materials 

    Ottesen, Therese Dagsvik (Master thesis; Mastergradsoppgave, 2014-06-02)
    In this thesis leading order asymptotic equations describing the propagation of approximately paraxial pulses in a weakly nonlinear and weakly dispersive medium are derived using the method of multiple scales, and the ...
  • Deforming the vacuum. On the physical origin and numerical calculation of the Casimir effect. 

    Mikalsen, Karl Øyvind (Master thesis; Mastergradsoppgave, 2014-05-14)
    A new method for calculating the Casimir force between compact objects was introduced in May 2012 by Per Jakobsen and Isak Kilen. In this method a regularization procedure is used to reduce the pressure to the solution of ...
  • Statistical significance of rising and oscillatory trends in global ocean and land temperature in the past 160 years 

    Østvand, Lene; Rypdal, Kristoffer; Rypdal, Martin (Preprint; Manuskript, 2014-10-30)
    Various interpretations of the notion of a trend in the context of global warming are discussed, contrasting the difference between viewing a trend as the deterministic response to an external forcing and viewing it as ...
  • Long-Range Memory in Millennium-Long ESM and AOGCM Experiments 

    Nilsen, Tine (Others; Andre, 2014)
    Consider the Earth’s global mean surface temperature time series (GMST) as a realization of a stochastic process. Based on a number of studies, a long-range memory (LRM) stochastic process seems to describe the GMST ...
  • Robustness of predator-prey models for confinement regime transitions in fusion plasmas 

    Zhu, H; Chapman, Sandra; Dendy, R.O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
    Energy transport and confinement in tokamak fusion plasmas is usually determined by the coupled nonlinear interactions of small-scale drift turbulence and larger scale coherent nonlinear structures, such as zonal flows, ...
  • Mapping climate change in European temperature distributions 

    Stainforth, David A.; Chapman, Sandra; Watkins, Nicholas W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
    Climate change poses challenges for decision makers across society, not just in preparing for the climate of the future but even when planning for the climate of the present day. When making climate sensitive decisions, ...

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