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Publications associées (195)

On the Combination of Auditory and Modulation Frequency Channels for ASR applications

This paper investigates the combination of evidence coming from different frequency channels obtained filtering the speech signal at different auditory and modulation frequencies. In our previous work \cite{icassp2008}, we showed that combination of classi ...

IDIAP2008

Er-Yb waveguide amplifiers in novel silicate glasses

Jana Jágerská

A set of novel silicate glasses containing ZnO and co-doped with Er3+ and Yb3+ was designed as substrates for optical waveguide amplifiers. Characterized by exceptionally low up-conversion, minimum Er concentration quenching and high mechanical as well as ...

Institute of Electrical and Electronics Engineers2008

Extraordinary midinfrared transmission of rectangular coaxial nanoaperture arrays

Hatice Altug, Shyamsunder Erramilli, Mi Kyung Hong, Xiaoyan Wang

We analyze the extraordinary transmission effect in the periodic and random nanoaperture arrays in optically thick metal films. Experimental studies are combined with simulations to show that extraordinary transmission effect at midinfrared wavelengths is ...

2008

The Dielectric Response of Room-Temperature Ionic Liquids: Effect of Cation Variation

Paul Joseph Dyson, Corinne Daguenet

In continuation of recent work on the dielec. response of imidazolium-based ionic liqs. (ILs) (J. Phys. Chem. B, 2006, 110, 12682), the authors report on the effect of cation variation on the frequency-dependent dielec. permittivity up to 20 GHz of ionic l ...

2007

Selective coupling of HE11 and TM01 modes into microfabricated fully metal-coated quartz probes

Hans Peter Herzig, René Dändliker, Laure Aeschimann

We report computational and experimental investigations on injection and transmission of light in microfabricated fully Aluminum-coated quartz probes. In particular, we show that a selective coupling of either the HE11 or the TM01 mode can be carried out b ...

2007

Vibrational coherences of the protonated Schiff base of all-trans-retinal in solution

Majed Chergui, Goran Zgrablic, Stefan Haacke

Modulations in the time gated ultrafast fluorescence of the protonated Schiff base of retinal in various solvents are reported, which reflect the creation and evolution of vibrational wave packets due to the torsional mode of retinal of frequency .apprx.12 ...

2007

Dielectric Response of Imidazolium-Based Room-Temperature Ionic Liquids

Paul Joseph Dyson, Corinne Daguenet

We have used microwave dielec. relaxation spectroscopy to study the picosecond dynamics of five low-viscosity, highly conductive room temp. ionic liqs. based on 1-alkyl-3-methylimidazolium cations paired with the bis((trifluoromethyl)sulfonyl)imide anion. ...

2006

PID controller design with constraints on sensitivity functions using loop slope adjustment

Alireza Karimi, Roland Longchamp, Daniel Garcia

This paper presents a PID controller design method for stable minimum- phase systems. The approach is similar to the one proposed in the so-called modified Ziegler- Nichols method, where only one point on the frequency response of the plant is measured and ...

2006

Mean-square performance of a convex combination of two adaptive filters

Ali H. Sayed

Combination approaches provide an interesting way to improve adaptive filter performance. In this paper, we study the mean-square performance of a convex combination of two transversal filters. The individual filters are independently adapted using their o ...

Institute of Electrical and Electronics Engineers2006

Modified atomic force microscopy cantilever design to facilitate access of higher modes of oscillation

Luis Guillermo Villanueva Torrijo

The detection of higher modes of oscillation in atomic force microscopy can provide additional information on sample properties. However, the limited bandwidth of the photodiode in the beam deflection detection technique often limits the detectable frequen ...

2006

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