Concept

Differential (mathematics)

Publications associées (73)

Overactuated systems coordination

The economic growth inherent to our nowadays society pushes the industries toward better performances. In the mechatronic context, the increasing competition results in more and more stringent specifications. Thus, the multiple objectives to track become h ...

EPFL2009

Single-Photon Synchronous Detection

Edoardo Charbon, Ties Jan Henderikus Kluter, Cristiano Niclass, Claudio Favi, Frédéric Monnier

Phase and intensity of light are detected simultaneously using a fully digital imaging technique: single-photon synchronous detection. This approach has been theoretically and experimentally investigated in this paper. We designed a fully integrated camera ...

2009

Competition of Wireless Providers for Atomic Users: Equilibrium and Social Optimality

Bixio Rimoldi, Vojislav Gajic

We study a problem where wireless service providers compete for heterogenous and atomic (non-infinitesimal) wireless users. The users differ in their utility functions as well as in the perceived quality of service of individual providers. We model the int ...

2009

On the naturality of the exterior differential

Marc Troyanov

We give sufficient conditions for the naturallity of the exterior differential under Sobolev mappings. In other words we study the validity of the equation

d\, f^* \alpha = f^*\; d\alpha

for a smooth form

\alpha

and a Sobolev map

f

. ...

2008

Differential neuroglycan C expression during retinal degeneration in Rpe65(-/-) mice

Pascal Escher

Purpose: An increased mRNA expression of the genes coding for the extracellular matrix proteins neuroglycan C (NGC), interphotoreceptor matrix proteoglycan 2 (IMPG2), and CD44 antigen (CD44) has been observed during retinal degeneration in mice with a targ ...

2008

HandCARE: a cable-actuated rehabilitation system to train hand function after stroke

Thomas Maeder, Roger Gassert, Etienne Burdet, Olivier Lambercy, Ludovic Dovat

Abstract—We have developed a robotic interface to train hand and ﬁnger function. HandCARE is a Cable-Actuated REhabilitation system, in which each ﬁnger is attached to an instrumented cable loop allowing force control and a predominantly linear displacemen ...

Institute of Electrical and Electronics Engineers2008

Intensity based quantification of fast retinal blood flow in 3D via high resolution resonant Doppler spectral OCT - art. no. 66270J

Theo Lasser, Rainer Leitgeb, Martin Villiger, Adrian Bachmann, Roland Michaely, Cédric Blatter

Resonant Doppler Fourier Domain Optical Coherence Tomography is a functional imaging modality for quantifying fast tissue flow. The method profits from the effect of interference fringe blurring in spectrometer-based FDOCT in the presence of sample motion. ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2007

Unified mechanical approach to piezoelectric bender modeling

Jean-Marc Breguet, Robert Dunsch

Anewanalytical modeling approach for piezoelectric bending elements is described. The approach is based on the beam theory under quasi-static equilibrium condition. It uses the theory of superposition of piezoelectric action in the bender and external mome ...

2007

Common-mode Oscillation in Capacitive Coupled Differential Colpitts Oscillators

Christian Enz, Uroschanit Yodprasit

A simple approach to the realisation of a differential Colpitts oscillator is to connect the grounded capacitor in the feedback network of two single-ended Colpitts oscillators together in series. As the output signals are expected to be differential, it i ...

2007

Adjoint Sensitivity Analysis of Index-One Multistage Differential Equations

Dominique Bonvin, Benoît Chachuat

Many practical chemical engineering processes involve a sequence of distinct transient operations, forming multistage systems in which each stage is described by mixed sets of differential and algebraic equations (DAEs). These models usually involve decisi ...

2007

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On the naturality of the exterior differential

Marc Troyanov

We give sufficient conditions for the naturallity of the exterior differential under Sobolev mappings. In other words we study the validity of the equation

d\, f^* \alpha = f^*\; d\alpha

for a smooth form

\alpha

and a Sobolev map

f

. ...

2008