This paper describes how we modeled and solved the DEBS’11 Grand Challenge of implementing a social network game using event processing technology. We first present an automaton-based model that we used to capture the game semantics. Then we summarize three different approaches we investigated to implement this automaton together with their evaluations. Finally, we provide a discussion of our observations and lessons learned as a result ...

We investigate parallel algorithms for the solution of the shallow-water equation in a space-time framework. For periodic solutions, the discretized problem can be written as a large cyclic non-linear system of equations. This system of equations is solved with a Newton iteration which uses two levels of preconditioned GMRES solvers. The parallel performance of this algorithm is illustrated on a number of numerical experiments.

In this work we investigate the validity of the following assumptions that were used in previous studies of the endolymph motion within the semicircular canals of the inner ear: (a) quasi-steadiness and therefore exclusion of the time derivative, (b) absence of advection, (c) insignicance of Coriolis and centrifugal forces. A parameter study is performed using the C++ based OpenFOAM® software library for nu- merical simulations on a nite ...