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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Qualité des Observations pour les systèmes Sensor Webs : de la théorie à la pratique / Quality of Observation within Sensor Web systems : from theory to practice

Auger, Antoine 20 April 2018 (has links)
Les systèmes dits Sensor Webs sont des middlewares informatiques assurant la communication entre les capteurs et les applications. En tant que véritables médiateurs, la popularité de ces systèmes n’a cessé de grandir depuis l’apparition des tout premiers capteurs. Plus récemment, l’émergence de nouveaux paradigmes tels que l’Internet des Objets (IoT) a complètement révolutionné les systèmes basés sur les capteurs en général. Parmi eux, les Sensor Webs ne dérogent pas à cette règle et doivent désormais répondre à de nouveaux défis, notamment en termes d’intégration, de Qualité des Observations (QoO) et d’adaptation système. Dans ce travail de recherche, nous proposons une nouvelle génération de Sensor Webs capables d’adapter la QoO distribuée de manière autonomique et de manière spécifique à chaque application (QASWS). Premièrement, nous introduisons un framework générique destiné aux chercheurs et développeurs souhaitant concevoir leur propre solution QASWS. Dans un deuxième temps, nous instancions ce framework et proposons un prototype de plateforme d’intégration pour l’évaluation de la QoO à la demande (iQAS). Après avoir évalué ses performances, nous présentons trois cas d’utilisation pour la plateforme iQAS. Finalement, nous concluons cette étude en imaginant l’apport de certains paradigmes transverses vis-à-vis de la QoO dans un futur proche. / Sensor Web systems are computer middlewares that aim at bridging the gap between sensors and applications. As true mediators, the popularity of such systems has steadily grown since the appearance of the very first sensors. More recently, the emergence of new paradigms such as the Internet of Things (IoT) has completely revolutionized the sensing research field. As a consequence, Sensor Webs should now cope with new challenges pertaining to integration, Quality of Observation (QoO) and system adaptation. In this research work, we propose a novel generation of Sensor Webs able to adapt the delivered QoO in an autonomic and application-specific manner (QASWS). First, we introduce a generic framework intended for researchers and developers who want to conceive their own QASWS solution. Then, we instantiate this framework and propose a prototype of an integration platform for QoO assessment as a service (iQAS). After evaluating its performances, we present three use cases for the iQAS platform. Finally, we conclude this work by foreseeing the benefits of some transverse paradigms with regard to QoO in the near future.
2

RESEARCH ENVIRONMENT FOR VEHICLE EMBEDDED ANALYSIS ON LINUX

Sorenson, Carl E., Yarbrough, Stanton K., Freudinger, Lawrence C., Gonia, Philip T. 10 1900 (has links)
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper overviews the Research Environment for Vehicle-Embedded Analysis on Linux (REVEAL), which is an open standards framework for the creation and deployment of realtime embedded and network distributed data systems. REVEAL is an ongoing project at NASA Dryden to evaluate the feasibility and benefits of using Linux in a modern generic web-enabled data system for measurement and telemetry network research, by actually building such a system. Novel features are described, such as XML based self-configuring, self-verifying and self-documenting software, and automatic XML metadata generation. The REVEAL architecture is described, including the core server and scheduler, and the management of system and user job processing. Performance, timing, determinism, and security issues are discussed, as well as the advantages and limitations of Linux.

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