Concept

Métrique de Schwarzschild

Publications associées (45)

Surface plasmon resonance sensor showing enhanced sensitivity for CO2 detection in the mid-infrared range

Hans Peter Herzig, Andrea Crottini, Jérôme Faist, Sylvain Herminjard, Lorenzo Sirigu

We present the first optical sensor based on Surface Plasmon Resonance (SPR) operating in the mid-infrared range. The experimental setup is based on a Kretschmann geometry with Ti/Au layers deposited on a CaF2 prism where light excitation is provided by a ...

2009

Non-metric coordinates for predicting network proximity

Dan-Cristian Tomozei

We consider the problem of determining the “closest”, or best Internet host to connect to, from a list of candidate servers. Most existing approaches rely on the use of metric, or more specifically Euclidean coordinates to infer network proximity. This is ...

IEEE2008

An exact solution for ideal dam-break floods on steep slopes

Christophe Ancey, Martin Rentschler

Dam-break floods on steep slopes occur in diverse settings. They may result from failure of either natural or man-made dams, and they have been responsible for the loss of thousands of lives [Costa, 1988]. Recent disasters resulting from dam-break floods o ...

American Geophysical Union2008

On the focusing critical semi-linear wave equation

Joachim Krieger

The wave equation partial derivative tt psi - Delta psi - psi(5) = 0 in R-3 is known to exhibit finite time blowup for data of negative energy. Furthermore, it admits the special static solutions phi(x, a) = (3a)(1/4) (1 + a\x(2))- 1/2 for all a > 0 which ...

2007

Gravitating field-theoretical branes and their excitations

Katarzyna Zuleta Estrugo

This thesis is devoted to studying field-theoretical branes in warped geometries, with emphasis on brane excitations and properties of background solutions. Firstly, we examine the features of a model in which our universe is represented by a local string- ...

EPFL2005

Spectroscopy, persistent hole burning, and holographic applications of naphtophthalocyanine/haloanthracene systems

Demetri Psaltis

We report on the spectroscopic and hole burning properties of free-base naphtophthalocyanine with and without 1-chloranthracene in polymer host. These materials exhibit a strong 0-0 absorption band in the region 800 nm matching the wavelength range of most ...

2002

20 MW Compressor LCI Drive: Modeling, Simulation and Measurements.

Jean-Jacques Simond, Mai Tu Xuan, Roland Wetter, Alain Sapin

The LCI (Load commutated Inverter) is still today a suitable solution for supplying high power variable speed drive systems. The following main topics are described in this contribution: The modeling of a 20 MW LCI synchronous drive system for a compressio ...

2002

Derivation and measurement of the M/# in spectral hole burning media

Demetri Psaltis, Wei Liu

We demonstrate 10 plane wave holograms angularly multiplexed at one frequency channel in spectral hole burning medium. We show that the M/# is still a valid system metric and the measured M/# in one frequency channel is about 0.01. ...

2001

An Evolutionary Active-Vision System

Dario Floreano

We describe an evolutionary vision system capable of autonomously scanning through an image while zooming in and out and changing filtering strategy in order to perform shape discrimination. The system consists of a small artificial retina controlled by an ...

2001

Multicriteria Decision Support System Applied to Sustainable and Integrated Energy Centres for Rural Development in the Mediterranean Area.

Daniel Favrat, André Musy, Roland Prélaz-Droux, Alexandre Repetti, Xavier Pelet

A multicriteria decision support system has been developed to evaluate alternatives for sustainable and integrated energy centres for rural development in the Mediterranean area. The search for the most suitable solution for a fixed site is a complex probl ...

1999

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