Search results for "systèmes"

Projet collectif de recherche. Les cours d'eau en Bourgogne-Franche-Comté. Patrimoine immergé et évolution des hydrosystèmes: Première année d'une au…

2017

PSDR 4 : Un programme d’aide a la structuration des filières protéines végétales en Bourgogne-Franche Comté

2016

BAPGEAPSIGESTADAGROSUPINRA; International audience; Afin de répondre aux enjeux actuels (réduction des intrants, circuits courts, changement climatique…) les acteurs chercheurs-professions-politiques de Bourgogne et Franche Comté, engagés sur la production de protéines végétales et leur utilisation en alimentation animale et humaine, ont convenu de construire une action PSDR 4 (Pour et Sur le Développement Régional ) visant le développement et la triple performance économique-environnementale- sociale de cette filière importante pour l'activité de ce territoire. L’ambition de ce programme est de répondre aux principales questions que se posent actuellement les différents acteurs de la filiè…

Smart River : Towards Efficient Cooperative Autonomous Inland Navigation

2022

In recent years, inland waterway transport has witnessed increasing attention from France and many European countries. However, this mode of transport lacks flexibility, has an aging infrastructure, and the current ships are not adapted to an increase in transport capacity ensuring the safety of vessels and goods as well as reliable and constant delivery times. Therefore, inland transport must go through an organizational and technical renovation specific to its particular environment in order to hope to compete with land transport.In this thesis, we propose developing a smart river ecosystem that focuses on three principal axes: (i) automatic inland infrastructure, (ii) autonomous inland s…

Partially hyperbolic diffeomorphisms with a compact center foliation with finite holonomy

2011

The thesis classifies partially hyperbolic diffeomorphisms with a compact center foliation with finite holonomy. Under the further assumption of a one-dimensional unstable bundle we show the following: If the unstable bundle is oriented then the system fibers over a hyperbolic toral automorphism. We further establish that the system has a dense orbit of center leaves. During the proof we show a Shadowing Lemma and the dynamical coherence without restrictions of the dimensions.

Fabrication and characterization of thermo-plasmonic routers for telecom applications

2013

The Dielectric Loaded Surface Plasmon Polariton Waveguides (DLSPPWs) have recently emerged as a possible solution to carry both optical and electrical signals on- chip. However, in the particular context of optical interconnects, advanced functionalities such as filtering, switching, and routing are required in order to replace in the future the equivalent electronic components which are too much power consumer and also to reduce their footprints. After presenting the interest and limitation of the leakage radiation microscopy method used all along this work, we show several active devices using thermo-sensitive polymers as the dielectric load driven electrically by Joule heating. Then we d…

Ontology-based cooperation of information systems : contributions to database-to-ontology mapping and XML-to-ontology mapping

2010

This thesis treats the area of ontology-based cooperation of information systems. We propose a global architecture called OWSCIS that is based on ontologies and web-services for the cooperation of distributed heterogeneous information systems. In this thesis, we focus on the problem of connecting the local information sources to the local ontologies within OWSCIS architecture. This problem is articulated by three main axes: 1) the creation of the local ontology from the local information sources, 2) the mapping of local information sources to an existing local ontology, and 3) the translation of queries over the local ontologies into queries over local information sources.

Le filtre de Kalman étendu à grand-gain adaptatif et ses applications

2010

The work concerns the “observability problem”—the reconstruction of a dynamic process’s full state from a partially measured state— for nonlinear dynamic systems. The Extended Kalman Filter (EKF) is a widely-used observer for such nonlinear systems. However it suffers from a lack of theoretical justifications and displays poor performance when the estimated state is far from the real state, e.g. due to large perturbations, a poor initial state estimate, etc. . . We propose a solution to these problems, the Adaptive High-Gain (EKF). Observability theory reveals the existence of special representations characterizing nonlinear systems having the observability property. Such representations ar…

Traitement 3D de nuages de points basé sur la connaissance

2013

The modeling of real-world scenes through capturing 3D digital data has proven to be both useful andapplicable in a variety of industrial and surveying applications. Entire scenes are generally capturedby laser scanners and represented by large unorganized point clouds possibly along with additionalphotogrammetric data. A typical challenge in processing such point clouds and data lies in detectingand classifying objects that are present in the scene. In addition to the presence of noise, occlusionsand missing data, such tasks are often hindered by the irregularity of the capturing conditions bothwithin the same dataset and from one data set to another. Given the complexity of the underlying…

: National contexts, organisation of educational systems and inequalities between pupils : the PISA enquiry contribution

2003

This paper, after having described both mean scores and dispersion of the different countries integrated in PISA last study, put together those "products" with economic and cultural characteristics of the countries considered. It explores also the relationship between the pupils'scores and some institutional characteristicis of the educational systems. Results show that pupils'scores follow some geographical patterns, and also that some relations exist between scores and some institutional or pedagogical practices such as repeating or tracking.

Pertinence d'une Representation 3d d'un Projet de Renovation de Batiment en Realite Augmentee Mobile

2012

Cet article aborde la possibilité de disposer de la maquette numérique d'un projet de construction sur le lieu même du déroulement des opérations. Le cas d'étude considère des travaux de rénovation sur des fenêtres anciennes dont il convient d'améliorer l'efficacité énergétique