Reconfiguration of Distributed Information Fusion System ? A case study

Information Fusion Systems are now widely used in different fusion contexts, like scientific processing, sensor networks, video and image processing. One of the current trends in this area is to cope with distributed systems. In this context, we have defined and implemented a Dynamic Distributed Information Fusion System runtime model. It allows us to cope with dynamic execution supports while trying to maintain the functionalities of a given Dynamic Distributed Information Fusion System. The paper presents our system, the reconfiguration problems we are faced with and our solutions.Comment: 6 pages - Preprint versio

L' « approche terroir » : pour une démarche de recherche-formation-action

International audienceThe "Terroir approach": for research-trainingaction method. The sharing of knowledge between researchers and practitioners, and the training of local development actors, are important issues for the valuation of territorial resources and rural development. The concept of terroir, which is very traditional in France, but is also now extending internationally, in connection with the establishment of protected geographical indications, has undergone a didactic analysis, to study the role it could have on training projects. The current educational research demonstrates that, beyond the understanding of the concept of terroir, the value of using the concept resides in the establishment of a researchdevelopment training , called "terroir approach

Large scale production of multi-walled carbon nanotubes by fluidized bed catalytic chemical vapor deposition : a parametric study

A parametric study investigating the impact of temperature, run duration, total pressure, and composition of the gaseous phase on the catalytic growth of multi-walled carbon nanotubes (MWNT) has been performed. MWNT have been produced very selectively on the multi gram scale by catalytic chemical vapor deposition from ethylene in a fluidized bed reactor. The kinetics of MWNT growth is fast and, with the catalyst used, no induction period has been observed. The kinetic law is positive order in ethylene concentration and the process is limited by internal diffusion in the porosity of the catalyst. The formation of MWNT in the macroporosity of the catalyst induces an explosion of the catalyst grains. Such a process, thanks to the absence of temperature gradient and to the efficient mixing of the grains allows a uniform and selective treatment of the catalyst powder leading to very high selectivity towards MWNT formation. High purity MWNT have been obtained after catalyst dissolution. Depending on the temperature of production, the specific surface area of this material ranged between 95 and 455 m2/g

L'« APPROCHE TERROIR » : POUR UNE DEMARCHE DE RECHERCHE-FORMATION-ACTION

N° ISBN - 978-2-7380-1284-5International audienceThe "terroir approach": for research-training-action method. — The sharing of knowledge between researchers and practitioners, and the training of local development actors, are important issues for the valuation of territorial resources and rural development. The concept of terroir, which is very traditional in France, but is also now extending internationally, in connection with the establishment of protected geographical indications, has undergone a didactic analysis, to study the role it could have on training projects. The current educational research demonstrates that, beyond the understanding of the concept of terroir, the value of using the concept resides in the establishment of a research-development training , called "terroir approach

An original growth mode of MWCNTs on alumina supported iron catalysts

Multi-walled carbon nanotubes (MWCNTs) have been produced from ethylene by Fluidized Bed Catalytic Chemical Vapor Deposition (FB-CCVD) on alumina supported iron catalyst powders. Both catalysts and MWCNTs-catalyst composites have been characterized by XRD, SEM-EDX, TEM, Mössbauer Spectroscopy, TGA and nitrogen adsorption measurements at different stages of the process. The fresh catalyst is composed of amorphous iron (III) oxide nanoparticles located inside the porosity of the support and of a micrometric crystalline &-iron (III) oxide surface film. The beginning of the CVD process provokes a brutal reconstruction and simultaneous carburization of the surface film that allows MWCNT nucleation and growth. These MWCNTs grow aligned between the support and the surface catalytic film, leading to a uniform consumption and uprising of the film. When the catalytic film has been consumed, the catalytic particles located inside the alumina porosity are slowly reduced and activated leading to a secondary MWCNT growth regime, which produces a generalized grain explosion and entangled MWCNT growth. Based on experimental observations and characterizations, this original two-stage growth mode is discussed and a general growth mechanism is proposed

Property Model Methodology: A case study with Modelica

International audienceThe aim of this paper is twofold. Firstly, it is intended to demonstrate the relevance of the Property Model Methodology (PMM) to specify, validate, design and verify continuous multi-physics systems. Secondly, it aims at verifying the compatibility of PMM concepts with the Modelica simulation language. We will be using the case study of an aircraft landing gear to show how to translate the theoretical concepts of PMM into executable Modelica models. This article proves the fundamental concepts of PMM and provides a starting point for further research so as to not only model other types of engineered systems such as discrete and hybrid systems, but also support additional systems engineering activities, such as safety-reliability

Development and implementation of explicit computerized protocols for mechanical ventilation in children

Mechanical ventilation can be perceived as a treatment with a very narrow therapeutic window, i.e., highly efficient but with considerable side effects if not used properly and in a timely manner. Protocols and guidelines have been designed to make mechanical ventilation safer and protective for the lung. However, variable effects and low compliance with use of written protocols have been reported repeatedly. Use of explicit computerized protocols for mechanical ventilation might very soon become a "must." Several closed loop systems are already on the market, and preliminary studies are showing promising results in providing patients with good quality ventilation and eventually weaning them faster from the ventilator. The present paper defines explicit computerized protocols for mechanical ventilation, describes how these protocols are designed, and reports the ones that are available on the market for children