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Russian-Western Blind Spots: From Dialogue on Contested Narratives to Improved Understanding
(2019)This report is the result of a collective effort by the participants in the Russian-German Dialogue Project ‘Reflecting on Conflict Narratives’. It draws on a dialogue process of two workshops held in Moscow and Berlin in September and November 2018. The report highlights the competing narratives following the end of the Cold War, outlines their consequences, and provides recommendations to increase Russian-German cooperation.Report -
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Changing Ocean, Marine Ecosystems, and Dependent Communities
(2019)IPCC Special Report on the Ocean and Cryosphere in a Changing ClimateReport -
Framing and Context of the Report
(2019)IPCC Special Report on the Ocean and Cryosphere in a Changing ClimateReport -
Spannungszustand in ungerissenen Betonbauten
(2019)Ein grosser Teil der Bewehrungsmenge in vielen Betonbauten wird primär zur Begrenzung der Rissbreiten im Gebrauchszustand vorgesehen. Oft bleibt die Rissbildung jedoch aus, und diese sogenannte Mindestbewehrung bleibt inaktiv. Viele heutige Bemessungsvorschriften gehen zudem davon aus, dass sich die Tragwerke duktil verhalten, womit der initiale Spannungszustand für die Bemessung irrelevant ist. Die erforderliche Duktilität kann dabei ...Report -
A new system for 3D fish-tracking
(2019)Large-scale laboratory investigations with live-fish, i.e. so-called ethohydraulic tests, are used to understand interactions between the hydraulics of fish protection technologies and fish behaviour and hence to improve the current design of fish passages or develop new technologies. For such laboratory applications, a 3D fish-tracking system was developed. The system consists of vertically submerged cameras synchronously recording to a ...Report -
Generalised multilevel Picard approximations
(2019)SAM Research ReportIt is one of the most challenging problems in applied mathematics to approximatively solve high-dimensional partial differential equations (PDEs). In particular, most of the numerical approximation schemes studied in the scientific literature suffer under the curse of dimensionality in the sense that the number of computational operations needed to compute an approximation with an error of size at most $ \epsilon > 0$ grows at least ...Report -
Analysis of multilevel MCMC-FEM for Bayesian inversion of log-normal diffusions
(2019)SAM Research ReportWe develop the Multilevel Markov Chain Monte Carlo Finite Element Method (MLMCMC-FEM for short) to sample from the posterior density of the Bayesian inverse problems. The unknown is the diffusion coefficient of a linear, second order divergence form elliptic equation in a bounded, polytopal subdomain of $ \mathbb{R}^d$ . We provide a convergence analysis with absolute mean convergence rate estimates for the proposed modified MLMCMC method, ...Report