Browsing Matematisk institutt by Title
Now showing items 3608-3627 of 3778
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(Research report / Forskningsrapport, 1983)
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Infinite-dimensional compressed sensing deals with the recovery of analog signals (functions) from linear measurements, often in the form of integral transforms such as the Fourier transform. This framework is well-suited ...
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(Research report / Forskningsrapport, 1976)
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(Research report / Forskningsrapport, 2014)Hierarchical models defined by means of directed, acyclic graphs are a power- ful and widely used tool for Bayesian analysis of problems of varying degrees of complexity. A simulation based method for model criticism in ...
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(Doctoral thesis / Forskningsrapport, 1973)
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(Research report / Forskningsrapport, 2009)In this paper we introduce Skorohod-semimartingales as an expanded concept of classical semimartingales in the setting of Lévy processes. We show under mild conditions that Skorohod-semimartingales similarly to semimartingales ...
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(Research report / Forskningsrapport, 2004)We consider doubly nonlinear anisotropic degenerate parabolic equations, supplemented with an initial condition and a homogeneous Dirichlet boundary condition. We introduce a notion of entropy solution and prove that the ...
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(Master thesis / Masteroppgave, 2022)In this thesis we derive a new version of Thiele's partial differential equation for computing the insurance reserves of unit-linked policies based on stochastic yields of bonds in a defaultable bond market. This is based ...
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(Research report / Forskningsrapport, 1996)
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(Research report / Forskningsrapport, 2004)
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(Doctoral thesis / Doktoravhandling, 2019)Teknikker og konsepter som er knyttet til kombinatorikk blir ofte brukt innenalgebraisk geometri. Et eksempel på dette er toriske degenerasjoner, som kanbrukes til å besvare visse klassifiseringsspørsmål. I denne avhandlingen ...
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(Research report / Forskningsrapport, 2004)
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)We study theoretically and numerically the bending-driven levelling of thin viscous films within the lubrication approximation. We derive Green’s function of the linearized thin-film equation and further show that it ...
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(Research report / Forskningsrapport, 1963)
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(Research report / Forskningsrapport, 2002)The stability of barotropic and baroclinic shelf slope currents currents is investigated. Assuming periodic small amplitude perturbation in along shelf direction the stability problem is reduced to an eigenvalue problem ...
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Unsupervised anomaly detection based on clustering methods and sensor data on a marine diesel engine (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)Sensor data from marine engine systems can be used to detect changes in performance in near real time which may be indicative of an impending failure. Thus sensor-based condition monitoring can be important for the reliability ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)In 3D marine seismic acquisition, the seismic wavefield is not sampled uniformly in the spatial directions. This leads to a seismic wavefield consisting of irregularly and sparsely populated traces with large gaps between ...
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(Research report / Forskningsrapport, 1979)
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(Research report / Forskningsrapport, 1999)