Concept

Difference quotient

Publications associées (41)

Local nonreflecting boundary condition for time-dependent multiple scattering

Starting from from a high-order local nonreflecting boundary condition (NBC) for single scattering [25], we derive a local NBC for time-dependent multiple scattering problems in three space dimensions, which is completely local both in space and time. To d ...

2011

Effects of the foot evolution on the behaviour of slow-moving landslides

Alessio Ferrari, David Gonzalez

The paper presents a time-dependent 2D numerical model which has been developed with the purpose of highlighting the effects of the slope foot evolution on the behaviour of slow-moving landslides. The model allows to quantitatively analyse how foot mass va ...

Elsevier2011

MATHICSE Technical Report : A stochastic collocation method for the second order wave equation with a discontiuous random speed

Fabio Nobile

In this paper we propose and analyze a stochastic collocation method for solving the second order wave equation with a random wave speed and subjected to deterministic boundary and initial conditions. The speed is piecewise smooth in the physical space and ...

MATHICSE2011

On Regularized Reconstruction of Vector Fields

Michaël Unser, Pouya Dehghani Tafti

In this paper, we give a general characterization of regularization functionals for vector field reconstruction, based on the requirement that the said functionals satisfy certain geometric invariance properties with respect to transformations of the coord ...

IEEE2011

Control of the Screening Ability at a Ferroelectric-Semiconductor Interface

Nava Setter, Alexander Tagantsev, Maxim Gureev

Recent progress in integrating ferroelectrics directly on silicon opens the exciting possibility of implementing ferroelectric-semiconductor devices [1]. One of the major problems for such integration is the instability of the ferroelectric state in very t ...

2011

Observation of Bs0 -> Ds()+ Ds()- using e+e- collisions and a determination of the Bs-Bsbar width difference Delta Gamma_s

Olivier Schneider, Aurelio Bay, Mingkui Wang, Chao Wang, Tagir Aushev, Vladislav Balagura, Jean Wicht, Remi Léandre Albert Louvot, Ji Hyun Kim

We have made the first observation of B-s(0) -> D-s(()()+) D-s(()()-) decays using 23.6 fb(-1) of data recorded by the Belle experiment running on the Y(5S) resonance. The branching fractions are measured to be B(B-s(0) -> Ds+Ds-) = (1.03(-0.32-0.25)(+0. ...

2010

Suisse romande "Les facettes d'une région affirmée"

Martin Schuler, Pierre-Emmanuel Dessemontet, Alain Nicolas Jarne

Cette publication, réalisée à l'occasion du Forum des 100, tente de décrire en 25 instantanés cartographiques les différentes facettes de la Suisse romande en tant qu’espace géographique. L’arc jurassien n’est pas l’arc lémanique, le Valais n’est pas le pa ...

CEAT, Microgis, Forum des 100 (L'Hebdo)2009

Are the US outperforming Europe in university technology licensing? A new perspective on the European paradox

Patrick Gaulé, Annamaria Conti

Europe is perceived to lag behind the US in converting its academic results into economic outcomes. Using new survey data and controlling for standard factors affecting the productivity of Technology Transfer Offices (TTOs), we find that European TTOs do n ...

2009

Illuminant retrieval for fixed location cameras

Sabine Süsstrunk, Joanna Marguier

Fixed location cameras, such as panoramic cameras or surveillance cameras, are very common. In images taken with these cameras, there will be changes in lighting and dynamic image content, but there will also be constant objects in the background. We propo ...

2008

Modal Response of Hydraulic Turbine Runners

François Avellan, Eduard Egusquiza

The mechanical design of hydraulic turbines is conditioned by the dynamic response of the runner that is usually estimated by a computational model. Nevertheless, the runner has complex boundary conditions that are difficult to include in the computational ...

International Association For Hydraulic Research2006

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