Concept

Métrique (physique)

Publications associées (38)

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Optimal control of nonmodal disturbances in boundary layers

Peter Corbett

"The optimal control of infinitesimal flow disturbances experiencing the largest transient gain over a fixed time span, commonly termed ""optimal perturbations,"" is undertaken using a variational technique in two- and three-dimensional boundary layer flow ...

2001

Hybrid, metric - topological, mobile robot navigation

Nicola Tomatis

This thesis presents a recent research on the problem of environmental modeling for both localization and map building for wheel-based, differential driven, fully autonomous and self-contained mobile robots. The robots behave in an indoor office environmen ...

EPFL2001

Vibrational amplitudes in vitreous silica

Alfredo Pasquarello

A model structure of vitreous silica, for which the vibrational frequencies and eigenmodes were calculated from first principles, is used to investigate vibrational amplitudes. Calculated mean-square displacements for oxygen and silicon atoms are obtained ...

2000

Contention-Aware Metrics for Distributed Algorithms: Comparison of Atomic Broadcast Algorithms

André Schiper, Xavier Défago

Contention-Aware Metrics for Distributed Algorithms: Comparison of Atomic Broadcast Algorithms Peter Urban, Xavier Defago and Andre Schiper Resource contention is widely recognized as having a major impact on the performance of distributed algorithms. Neve ...

2000

Contention-aware metrics: analysis of distributed algorithms

André Schiper, Xavier Défago

Resource contention is widely recognized as having a major impact on the performance of distributed algorithms. Nevertheless, the metrics that are commonly used to predict their performance take little or no account of contention. In this paper, we define ...

2000

Indefinite-quadratic estimation and control: a unified approach to H 2 and H∞ theories

Ali H. Sayed

This monograph presents a unified mathematical framework for a wide range of problems in estimation and control. The authors discuss the two most commonly used methodologies: the stochastic H2 approach and the deterministic (worst-case) H approach. Despite ...

Society for Industrial and Applied Mathematics1999

Inertia properties of indefinite quadratic forms

Ali H. Sayed

We study the relation between the solutions of two estimation problems with indefinite quadratic forms. We show that a complete link between both solutions can be established by invoking a fundamental set of inertia conditions. While these inertia conditio ...

IEEE1996

Fundamental inertia conditions for the solution of H_oo problems

Ali H. Sayed

We study the relation between the solutions of two minimization problems with indebite quadratic forms. We show that a complete link between both solutions can be established by invoking a fundamental set of inertia conditions. While these inertia condit ...

1995