On Friday May 11th, 2012, the Werkgemeenschap Scientific Computing is organizing, together with the Scientific Computing Group of the University of Antwerp, a spring meeting in Antwerp. A mixture of eight young and senior researchers have been selected to give a presentation on their research.

The program and abstracts of the presentations can be found at http://wsc.project.cwi.nl/eventsE.php.

Na enkele jaren afwezigheid is hij er terug: de mathdropping 2012 vindt plaats op 28 april 2012. Deze wiskundig getinte dropping is een mix van traditionele dropping technieken en logische spelletjes, op een locatie in de buurt van Antwerpen. Of je een ervaren dropper bent of nog nooit gedropt bent, als je wat wil puzzelen dan je kan zeker meedoen!

Meer informatie vind je op de flyer hieronder of via mathdropping@ua.ac.be

Inschrijven kan op http://www.mathdropping.ua.ac.be/

Affiche dropping

Op 3 februari ontvangt Sem Peelman, student van ons departement, de BIR&D award voor zijn bijdrage in het multidisciplinaire SmartCare project (zie smartcare.be). In het door de UA gelanceerde project verkenden de teams de toepasbaarheid van ijle technieken bij het modelleren van bio-electrische signalen. Een van die ijle technieken werd aan de UA ontwikkeld in de onderzoeksgroep CANT (prof. dr. Annie Cuyt) en inmiddels gepatenteerd.

De award ceremonie wordt voorafgegaan door een perslunch waarop student en promotor het project en de behaalde resultaten toelichten (zie www.birdbelgium.com).

Public defense of the PhD-thesis: “Iterative and multigrid methods for wave problems with complex-valued boundaries”, by Bram Reps.

The defense is public and takes place in aula Jan Fabre (G0.10) of building G, Middelheimlaan 1, 2020 Antwerpen.

Abstract: The ultimate goal of many a research is to develop an efficient solver for wave and scattering problems that are described by the Helmholtz equation defined on infinite domains. With this thesis we contribute our ideas and insights to this rich but still incomplete branch of applied mathematics. Exterior complex scaling is used to enforce outgoing boundary conditions on the truncated numerical domain. In this light, we have developed an innovative multigrid inverted preconditioner for the numerical solution of indefinite Helmholtz problems with Krylov subspace methods, that is based on complex stretched grids. The multigrid method is further stabilized with non-standard smoothing components for the inversion of competitive preconditioners of which the wave number dependency is examined. The ideas are founded on new theoretical results on the spectrum of the Helmholtz operator with a constant wave number that is discretized with complex-valued mesh widths. Numerical results, on the one hand, confirm the analysis and, on the other hand, verify its usefulness for more general heterogeneous two- and three-dimensional Helmholtz models that originate from both acoustics and quantum mechanical break-up problems.

 Meeting on Multi Paradigm Modeling

• Date: Tuesday, December 20th, 2011 - 13:00 - 16:00
• Location: Univeristy of Antwerp - Campus Middelheim - Room G005
• Contact Person: Hans Vangheluwe

Agenda

• Talk by Juan de Lara (UaM, Spain) "Flexible Model-Driven Engineering through Deep Meta-modelling and Genericity"
• Talk by Dennis Wagelaar (VUB) "Towards a general composition semantics for rule-based model transformations"
• Talk by Tom Mens and Romuald Deshayes (UMons) "Modeling the interactive behaviour of 3D objects"