Blar i Department of Mathematics på tittel
Viser treff 981-1000 av 1098
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A Study on Continuous Max-Flow and Min-Cut Approaches
(Chapter; Peer reviewed, 2010)We propose and investigate novel max-flow models in the spatially continuous setting, with or without supervised constraints, under a comparative study of graph based max-flow / min-cut. We show that the continuous max-flow ... -
A study on iterative methods for Richards' equation
(Peer reviewed; Journal article, 2016-04)This work concerns linearization methods for efficiently solving the Richards equation, a degenerate elliptic-parabolic equation which models flow in saturated/unsaturated porous media. The discretization of Richards’ ... -
Sub-bases of pleasant h-bases
(Department of Pure Mathematics report no. 14, Research report, 1987-02) -
Sub-Riemannian geometry and its applications to Image Processing
(Master thesis, 2022-06-01) -
Sub-Riemannian geometry of spheres and rolling of manifolds
(Doctoral thesis, 2011-04-29) -
Sub-semi-Riemannian geometry on Heisenberg-type groups
(Doctoral thesis, 2011-02-04) -
Subsea pump vibration analysis for predictive maintenance
(Master thesis, 2015-11-29)The goal of this study is to compare vibration signals of subsea pumps from two different time periods. These signals are gathered for predictive maintenance reasons. Vibration analysis is one of the most efficient tools ... -
SUCCESS: SUbsurface CO2 storage–Critical elements and superior strategy
(Peer reviewed; Journal article, 2011)SUCCESS is a Center for Environmental Energy Research in Norway and performs research related to geological storage of CO2 in the subsurface. The SUCCESS centre is established by the Research Council of Norway together ... -
Sudden wave flooding on steep rock shores: a clear but hidden danger
(Journal article; Peer reviewed, 2024)It is shown that very steep coastal profiles can give rise to unexpectedly large wave events at the coast. We conduct a statistical analysis of runs from a nearshore Boussinesq-type model to demonstrate that under certain ... -
Supervised Continuous Max-flow for Segmentation of Images with Intensity Inhomogeneities
(Master thesis, 2016-05-26)In this thesis we propose a regional adaptive active contour model for segmenting images with intensity inhomogeneities effectively. This model includes a regularization term, a global energy term and a local energy term. ... -
Sur la distance à l'instabilité de polynômes matriciels quadratiques / On the distance to instability of quadratic matrix polynomials
(Peer reviewed; Journal article, 2019-06-27)A bisection method is developed for computing the distance to instability of quadratic matrix polynomials. The computation takes rounding errors into account. -
Sur le transport de masse produit par des oscillations en milieu compressible, dissipatif et inhomogène
(Department of Applied Mathematics report, Research report, 1972-12) -
Surface reconstruction Using Probability Based Photo-Consistency
(Master thesis, 2009-12-04)We reconstruct the surface of an object seen from many different angles. We construct an energy functional by using visibility constraints and photo-consistency. This is then solved by the piecewise constant level set method. -
Survey strategies to quantify and optimize detecting probability of a CO2 seep in a varying marine environment
(Peer reviewed; Journal article, 2016-09)Designing a marine monitoring program that detects CO2 leaks from subsea geological storage projects is challenging. The high variability of the environment may camouflage the anticipated anisotropic signal from a leak and ... -
Symmetric spaces and Lie triple systems in numerical analysis of differential equations
(Peer reviewed; Journal article, 2014-03)A remarkable number of different numerical algorithms can be understood and analyzed using the concepts of symmetric spaces and Lie triple systems, which are well known in differential geometry from the study of spaces of ... -
Symmetric Spaces Rolling on Flat Spaces
(Journal article; Peer reviewed, 2023)The objective of the current paper is essentially twofold. Firstly, to make clear the difference between two notions of rolling a Riemannian manifold over another, using a language accessible to a wider audience, in ... -
Symmetric waves are traveling waves of some shallow water scalar equations
(Journal article; Peer reviewed, 2023)Following a straightforward proof for symmetric solutions to be traveling waves by Pei (Exponential decay and symmetry of solitary waves to Degasperis-Procesi equation. Journal of Differential Equations. 2020;269(10):7730-7749), ... -
Symmetry and simplicity spontaneously emerge from the algorithmic nature of evolution
(Journal article; Peer reviewed, 2022)Engineers routinely design systems to be modular and symmetric in order to increase robustness to perturbations and to facilitate alterations at a later date. Biological structures also frequently exhibit modularity and ... -
Syntetisk CDO: iTraxx-prising ved bruk av en Normal Invers Gaussisk Copula
(Master thesis, 2013-04-04)I denne oppgaven skal vi se at det er et stort marked for kredittderivater etter finanskrisen, men da i en vridning mot syntetiske varianter. Men framtidsutsiktene er usikre, da disse produktene er i en særstilling når det ... -
Temporal Scale-Dependent Sensitivity Analysis for Hydrological Model Parameters Using the Discrete Wavelet Transform and Active Subspaces
(Journal article; Peer reviewed, 2021)Global sensitivity analysis is an important step in the process of developing and analyzing hydrological models. Measured data of different variables are used to identify the number of sensitive model parameters and to ...