Browsing Matematisk institutt by Title
Now showing items 1661-1680 of 3782
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(Research report / Forskningsrapport, 2009)We investigate Hopf algebroids in the category of <I>L</I>-complete modules over a commutative Noetherian regular complete local ring. The main examples of interest in algebraic topology are the Hopf algebroids associated ...
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(Master thesis / Masteroppgave, 2008)In this thesis, we consider the L^2-Betti numbers associated to algebras and equivalence relations. For algebras, we expand upon the motivation between Connes and Shlyakhtenko's definition of L^2-Betti numbers of tracial ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)We show experimental evidence that as relatively long unidirectional waves propagate over a sloping bottom, from a deeper to a shallower domain, there can be a local maximum of kurtosis and skewness close to the shallower ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)Internal solitary waves (ISWs) propagating in a stably stratified two‐layer fluid in which the upper boundary condition changes from open water to ice are studied for grease, level, and nilas ice. The ISW‐induced current ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)An experimental investigation of flexural-gravity waves was performed in the Hamburg Ship Model Basin HSVA ice tank. Physical characteristics of the water-ice system were measured in several locations of the tank with a ...
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(Research report / Forskningsrapport, 1996)
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(Master thesis / Masteroppgave, 2012)
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)In [IMA J. Numer. Anal., 29 (2009), pp. 24--42], Nielsen, Tveito, and Hackbusch study the operator generated by using the inverse of the Laplacian as the preconditioner for second order elliptic PDEs $-\nabla \cdot (k(x) ...
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(Master thesis / Masteroppgave, 2023)In this thesis we investigate the difficulties associated with the prediction of the behavior of turbulent flow in straight and helically coiled pipes, due to their prevalence in real world scenarios. To simulate the ...
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)Large eddy simulations of a buoyant plume forming above a heated horizontal cylinder with a Rayleigh number of 9.4E7 is carried out and compared with experimental data. Natural convection heat transfer from a horizontal ...
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(Research report / Forskningsrapport, 2006)We present a well-balanced, large time stepping method for conservation laws with source terms. The numerical method is based on a local reformulation of the balance law as a conservation law with a discontinuous flux ...
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(Master thesis / Masteroppgave, 2008)This paper is compilated as a masters degree assignment at the Faculty of Mathematics and Natural Science, University of Oslo. Today, Bubble Deck is used to reduce the net weight of a concrete slab. This is done by casting ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)In the Barents Sea and adjacent water, fishing grounds are closed for shrimp fishing by the Norwegian Directorate of Fisheries Monitoring and Surveillance Service (MSS) if the expected number of juvenile fish caught are ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)Knowledge about how many fish that have been killed due to bycatch is an important aspect of ensuring a sustainable ecosystem and fishery. We introduce a Bayesian spatio-temporal prediction method for historical bycatch ...
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(Master thesis / Masteroppgave, 2017)
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(Research report / Forskningsrapport, 1990)
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(Research report / Forskningsrapport, 1992)
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)For a tropical manifold of dimension n we show that the tropical homology classes of degree (n-1, n-1) which arise as fundamental classes of tropical cycles are precisely those in the kernel of the eigenwave map. To prove ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)We establish variants of the Lefschetz section theorem for the integral tropical homology groups of tropical hypersurfaces of tropical toric varieties. It follows from these theorems that the integral tropical homology ...
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(Research report / Forskningsrapport, 2005)