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Tuesday, 29.08.2017, 15.00 Uhr (WIAS-406)
Seminar Modern Methods in Applied Stochastics and Nonparametric Statistics
A. Zadorozhnyi, Universität Potsdam:
Concentration of weakly dependent Banach-valued sums and applications to kernel learning methods
more ... Location
Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)

Abstract
We obtain a new Bernstein-type inequality for sums of Banach-valued random variables satisfying a weak dependence assumption of general type and under certain smoothness assumptions of the underlying Banach norm. We use this inequality in order to investigate statistical rates of convergence for the broad family of spectral regularization methods for reproducing kernel decision rules, when trained on a sample coming from a stationary $tau-$mixing process.

Host
WIAS Berlin
Thursday, 31.08.2017, 14.00 Uhr (WIAS-ESH)
Seminar Numerische Mathematik
C. Bartsch, WIAS Berlin:
A mixed stochastic-deterministic approach to particles interacting in a flow
more ... Location
Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal

Abstract
We present a new approach to the solution of coupled particle population balance systems. Such population balance systems consist of particles transported by a moving fluid. The particles interact with each other and with the surrounding fluid. Population balance systems aim at keeping track of both particle- and fluid quantities. In our approach, particle-particle interactions and particle-fluid interactions are solved with a stochastic simulation algorithm, while a finite element flow solver is used for fluid-fluid interactions. This best-of-two-worlds approach enables the efficient treatment even of such particle-fluid systems, where the particles are described by multiple internal coordinates. A simulation of a flow crystallizer will be presented as a proof of concept.

Host
WIAS Berlin
Monday, 18.09.2017, 14.00 Uhr (WIAS-ESH)
Seminar Quantitative Biomedizin
Prof. D. Chapelle, Inria Saclay -- Ile de France , Frankreich:
Biomechanical modeling of the heart, and cardiovascular system --- From sarcomeres to organ/system, with experimental assessments and patient-specific clinical validations
more ... Location
Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal

Abstract
Cardiac contraction originates at a subcellular - molecular, indeed - scale, within specific components of the cardiomyocytes (i.e. cardiac cells) called sarcomeres. This contractile behaviour then needs to be integrated at the organ level, namely, with a specific structure and shape. Furthermore, this organ crucially interacts with other physiological systems, the first of which being blood circulation via the cardiac function itself, and also the nervous system that controls the heart via various regulation mechanisms, and these interactions must be adequately represented in order to obtain accurate and predictive model simulations. This presentation will provide an overview of the recent advances on cardiac modeling achieved in the M3DISIM group, with a particular focus on the key multiscale, multi-physics and integrated system modeling aspects that need to be addressed, with many associated challenges pertaining to numerical methods, model validation, and inverse problems, in particular.

Host
WIAS Berlin
October 11 – 14, 2017 (WIAS-ESH)
Workshop/Konferenz: SPP 1962 Autumn School 2017 ``Nonsmooth Structures in Mathematical Models''
more ... Location
Weierstraß-Institut, Mohrenstr. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal

Abstract
There will be an autumn school on "Nonsmooth Structures in Mathematical Models" at the Weierstrass Institute in Berlin as part of the DFG SPP 1962. We will have three lecturer courses: 'Splitting algorithms in nonsmooth convex and nonconvex optimization' by Prof. Dr. Bot, 'Systems with rate independence: models, sensitivity, optimization' by Prof. Dr. Brokate, 'Problems with equilibrium constraints: Theory and numerics' by Prof. Dr. Outrata. More details of the program can be found at http://www.wias-berlin.de/workshops/sppsummerschool2017/program.jsp. The autumn school will start at 4pm on the 11th October and end around 12:30pm on the 14th October. This school is primarily intended for the doctoral and postdoctoral students. Interested parties may apply to register; the number of available places is limited so registration is mandatory for all and the deadline for registration is 30th August. There is no registration fee, however travel costs will not be paid. For full details and registration, please see http://www.wias-berlin.de/workshops/sppsummerschool2017/index.jsp.

Host
WIAS Berlin
DFG Schwerpunktprogramm 1962