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Space-Time Wavelet Methods for degenerate parabolic PDEs with applications to Fractional Brownian motion models
(2011)We analyze parabolic PDEs with certain type of weakly singular or degenerate time-dependent coefficients and prove existence and uniqueness of weak solutions in an appropriate sense. For the numerical solution a weak space-time formulation is considered, as a possible singularity or degeneracy of the diffusion coefficients impedes the application of classical parabolic theory. We analyze parabolic PDEs with certain type of weakly singular ...Presentation -
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Privacy-Preserving Distributed Network Troubleshooting
(2010)Today, there is a fundamental imbalance in cyber security. While attackers act more and more globally and coordinated, e.g., by using botnets, their counterparts trying to manage and defend networks are limited to examine local information only. While collaboration across network boundaries would substantially strengthen network defense and facilitate network management tasks in general, privacy concerns largely prevent collaborative ...Presentation -
Demokratischer Smog?
(2004)Untersuchungen der Verteilung materieller und immaterieller Güter auf soziale Klassen und Schichten, von rechtlicher und faktischer Chancengleichheit und Segregation haben in der Soziologie eine feste Tradition. Paradoxerweise war diese Thematik in der Umweltsoziologie lange ein „blinder Fleck“ - wenn nicht sogar theoretisch postuliert wurde, dass Umweltbelastungen eben alle betreffen, ungeachtet von Klasse und Schicht. ...Presentation -
High Order Quasi Monte-Carlo Integration for countably-parametric operator equations
(2015)Presentation