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44 papers · 1 filter
Symbolic Dynamics of Magnetic Bumps
Andreas Knauf, Marcello Seri
For n convex magnetic bumps in the plane, whose boundary has a curvature somewhat smaller than the absolute value of the constant magnetic field inside the bump, we construct a com…
A proof of concept for scale-adaptive parameterizations: the case of the Lorenz '96 model
Gabriele Vissio, Valerio Lucarini
Constructing efficient and accurate parameterizations of sub-grid scale processes is a central area of interest in the numerical modelling of geophysical fluids. Using a modified v…
Sequential Monte Carlo with transformations
Richard G Everitt, Richard Culliford, Felipe Medina-Aguayo +1
This paper introduces methodology for performing Bayesian inference sequentially on a sequence of posteriors on spaces of different dimensions. We show how this may be achieved thr…
Long-time stability and accuracy of the ensemble Kalman-Bucy filter for fully observed processes and small measurement noise
Jana de Wiljes, Sebastian Reich, Wilhelm Stannat
The ensemble Kalman filter has become a popular data assimilation technique in the geosciences. However, little is known theoretically about its long term stability and accuracy. I…
Darboux-Backlund transformations, dressing & impurities in multi-component NLS
Panagiota Adamopoulou, Anastasia Doikou, Georgios Papamikos
We consider the discrete and continuous vector non-linear Schrodinger (NLS) model. We focus on the case where space-like local discontinuities are present, and we are primarily int…
Determining the Veracity of Rumours on Twitter
Georgios Giasemidis, Colin Singleton, Ioannis Agrafiotis +4
While social networks can provide an ideal platform for up-to-date information from individuals across the world, it has also proved to be a place where rumours fester and accident…