Concept

Fonction de plusieurs variables

Publications associées (90)

Potentialities of slow and fast light in optical fibers

The ubiquitous role of optical fibers in modern photonic systems has stimulated research to realize slow and fast light devices directly in this close-to-perfect transmission line. Recent progress in developing optically-controlled delays in optical fibers ...

SPIE2009

A Phospho-Directed Macroporous Alumina-Silica Nanoreactor with Multi-Functions

Hubert Girault, Fang Liu, Jingjing Wan

A phospho-directed nanoreactor with multiple functions is reported. Alumina-functionalized macroporous ordered silica foams (Al-MOSF) have been developed with large pore size, high pore volume (1.6 cm(3)/g), and a surface area of 186 m(2)/g rich in coordin ...

American Chemical Society2009

Slow Light and Fast Light in Optical Fiber

Luc Thévenaz

Fiber slow light systems are at a turning point moving from a laboratory research to real applications. The possibility to shape the spectral resonance in Brillouin slow light leads to innovative solutions and makes possible the realization of optimized co ...

Optical Society of America2009

Relating time-occupancy measurements to space-occupancy and link vehicle-count

The relationships between instantaneous space-variables and (easily measurable) local time-variables in largely homogeneous and stationary traffic flow, as typically encountered in uninterrupted traffic conditions, are briefly reviewed. An elaborate analys ...

Elsevier2008

Preferential estimation

Levente Bodizs

State estimation is a necessary component of advanced monitoring and control techniques, since these techniques often require information that is too expensive or impossible to obtain from direct measurements. The objective of estimation is the reconstruct ...

EPFL2008

Efficient Product Importance Sampling using Hierarchical Thresholding

We present an efficient method for importance sampling the product of multiple functions. Our algorithm computes a quick approximation of the product on-the-fly, based on hierarchical representations of the Local maxima and averages of the individual terms ...

2008

Real-Time Optimization via Adaptation and Control of the Constraints

Dominique Bonvin, Benoît Chachuat, Alejandro Gabriel Marchetti

In the framework of real-time optimization, measurements are used to compensate for effects of uncertainty. The main approach uses measurements to update the parameters of a process model. In contrast, the constraint-adaptation scheme uses the measurements ...

2008

Wireless Sensor Networks for Environmental Monitoring: The SensorScope Experience

Martin Vetterli, Guillermo Barrenetxea Kobas, François Ingelrest

While wireless sensor networks have been extensively studied in the past few years, most results are of theoretical nature and were obtained outside of a practical context. This can be problematic for real applications, especially in the area of environmen ...

2008

A geometric characterization of orient at ion-reversing involutions

Hugo Parlier

We give a geometric characterization of compact Riemann surfaces admitting orientation-reversing involutions with fixed points. Such surfaces are generally called real surfaces and can be represented by real algebraic curves with non-empty real part. We sh ...

2008

Closed-loop Identification of Multivariable Systems: With or Without Excitation of All References?

Dominique Bonvin, Alireza Karimi, Ljubisa Miskovic

A variance analysis of the parameters of a plant, belonging to a class of multivariable systems, estimated in closed-loop operation is performed. More specifically, having in mind the control applications where it is not desirable to excite all external re ...

2008

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