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Affichage de 1801 à 1810 sur 1985

  • Article dans une revue

Improved convergent heuristics for the 0-1 multidimensional knapsack problem

Saïd Hanafi, Christophe Wilbaut

At the end of the seventies, Soyster et al. (Eur. J. Oper. Res. 2:195-201, 1978) proposed a convergent algorithm that solves a series of small sub-problems generated by exploiting information obtained through a series of linear programming relaxations. This process is suitable for the 0-1 mixed…

Annals of Operations Research, 2009, 183, pp.125 - 142. ⟨10.1007/s10479-009-0546-z⟩. ⟨hal-03723743⟩

  • Article dans une revue

Step-to-step reproducibility and asymmetry to study gait auto-optimization in healthy and cerebral palsied subjects, Intérêt de la reproductibilité du pas et de l'asymétrie pour étudier l'auto-optimisation de la marche chez des sujets sains et atteints de paralysie cérébrale

A. Descatoire, Virginie Femery, Francois J Potdevin, Pierre Moretto

ObjectiveThe purpose of our study was to compare plantar pressure asymmetry and step-to-step reproducibility in both able-bodied persons and two groups of hemiplegics. The relevance of the research was to determine the efficiency of asymmetry and reproducibility as indexes for diagnosis and…, Objectif - Le but de notre étude était de comparer l’asymétrie des pressions plantaires et la reproductibilité pas-à-pas chez des personnes valides et dans deux groupes de sujets hémiplégiques en vue de déterminer la pertinence des indices d’asymétrie ou de reproductibilité dans les processus de…

Annals of Physical and Rehabilitation Medicine, 2009, 52 (4), pp.319 - 329. ⟨10.1016/j.rehab.2009.02.004⟩. ⟨hal-04396526⟩

  • Article dans une revue

TLR2-dependent eosinophil interactions with mycobacteria: role of alpha-defensins.

Virginie Driss, Fanny Legrand, Emmanuel Hermann, Sylvie Loiseau, Yann Guerardel, Laurent Kremer, Estelle Adam, Gaëtane Woerly, David Dombrowicz, Monique Capron

Peripheral blood and tissue eosinophilia are a prominent feature in allergic diseases and during helminth infections. Eosinophil recruitment also frequently occurs upon mycobacterial infections, particularly in lung granuloma. However, the mechanism by which eosinophils interact with mycobacteria…

Blood, 2009, 113 (14), pp.3235-44. ⟨10.1182/blood-2008-07-166595⟩. ⟨hal-00373657⟩

  • Article dans une revue

Discrete Tagaki-Sugeno models for control: Where are we?

Thierry-Marie Guerra, Alexandre Kruszewski, Jimmy Lauber

This work deals with relaxed conditions for stability and stabilization of discrete-time Takagi–Sugeno (TS) models. It recalls classical results found in the literature which use quadratic Lyapunov functions leading to very conservative conditions, and various extensions based on piecewise and non-…

Annual Reviews in Control, 2009, 33 (1), pp.37-47. ⟨10.1016/j.arcontrol.2009.01.004⟩. ⟨hal-00519406⟩

  • Article dans une revue

Discrete-time normal form for left invertibility problem

Mohamed Djemai, Jean-Pierre Barbot, Inam Belmouhoub

This paper deals with the design of quadratic and higher order normal forms for the left invertibility problem. The linearly observable case and one-dimensional linearly unobservable case are investigated. The interest of such a study in the design of a delayed discrete-time observer is examined.…

European Journal of Control, 2009, 15 (2), pp.194-204. ⟨10.3166/ejc.15.194-204⟩. ⟨hal-00772645⟩

  • Article dans une revue

Dynamic similarity during human running: About Froude and Strouhal dimensionless numbers

Nicolas Delattre, Mario A Lafortune, Pierre Moretto

Dynamic similarity is a widely used concept in the fluid mechanics field, and consists in placing two different-sized systems in equivalent experimental conditions. This enables removal of the effects of size and prediction of the behavior of a full size system from a scale model. The aim of this…

Journal of Biomechanics, 2009, 42 (3), pp.312-318. ⟨10.1016/j.jbiomech.2008.11.010⟩. ⟨hal-04396520⟩

  • Article dans une revue

Output feedback LMI tracking control conditions with H∞ criterion for uncertain and disturbed T–S models

Badr Mansouri, Noureddine Manamanni, Kevin Guelton, Alexandre Kruszewski, Thierry-Marie Guerra

This work concerns the tracking problem of uncertain Takagi-Sugeno (T-S) continuous fuzzy model with external disturbances. The objective is to get a model reference based output feedback tracking control law. The control scheme is based on a PDC structure, a fuzzy observer and a H∞ performance to…

Information Sciences, 2009, 179 (4), pp.446-457. ⟨10.1016/j.ins.2008.10.007⟩. ⟨hal-00793235⟩

  • Article dans une revue

A Hybrid Algorithm for the Unbounded Knapsack Problem

Vincent Poirriez, Nicola Yanev, Rumen Andonov

This paper presents a new approach for exactly solving the Unbounded Knapsack Problem (UKP) and proposes a new bound that was proved to dominate the previous bounds on a special class of UKP instances. Integrating bounds within the framework of sparse dynamic programming led to the creation of an…

Discrete Optimization, 2009, 6, pp.110-124. ⟨10.1016/j.disopt.2008.09.004⟩. ⟨inria-00335065⟩

  • Article dans une revue

Dispositif expérimental d'analyse des performances de cellules photovoltaïques

Jean-Paul Becar, Fabrice Robert, Jean-Charles Canonne, Laurent Vermeiren

L'article rapporte un travail de conception, de réalisation et d'utilisation d'un dispositif expérimental d'analyse de performances de cellules photovoltaïques. Initié à son origine par des questionnements d'étudiants d'un Institut Universitaire de Technologie relatifs…

Journal sur l'enseignement des sciences et technologies de l'information et des systèmes, 2009, 8, pp.1009. ⟨10.1051/j3ea:2008050⟩. ⟨hal-02049289⟩

  • Article dans une revue

A third order sliding mode controller for a stepper motor

Michael Defoort, Frédéric Nollet, Thierry Floquet, Wilfrid Perruquetti

This paper deals with the robust control problem of a stepper motor subject to parameter uncertainties and load torque perturbation. The developed algorithm is based on third-order sliding-mode control such that a desired angular motor position is accurately tracked. The proposed scheme requires…

IEEE Transactions on Industrial Electronics, 2009, 56 (9), pp.3337-3346. ⟨10.1109/TIE.2009.2026378⟩. ⟨hal-00731474⟩