DMI

Abstract—The high mobility of the nodes, the reduced availability of the resources on the one hand and the rising needs of the real time applications made the provision of QoS compulsory in the ad hoc routing. Therefore the incorporating of QoS metrics in routing is ...

Abstract-One of the major issues of semantic web is the discovery and identification of the best service that responds to a user request. In this article we specify a semantic web services composition model built through an ontology described in the logical description ...

This work aims to seek a pragmatic approach to assess electricity consumption at the level of households, buildings and neighborhoods. The main concern consists in proposing aggregation methods based on jump process according to a customer environment that is intrinsically linked to the implementation of a centralized system. The aim of the approach is to present data aggregations that derive their basis from a data model in order to facilitate the processing of electricity data at different scales of analysis. Such a smart meter data management process merits the design of an aggregated database that can store data for a house, a building and a neighborhood. The advantage of this system lies in the facilitation of data interpretation and the ability to guide decision-makers in the management of electricity consumption. An analysis of the behavior of electricity consumption is also proposed based on the monitoring of the electricity consumption of the various devices connected to a ...

eXtreme Programming (XP) is a methodology based on principles and practices for quickly developing software. However this approach requires the programmers to be co-located. Many research projects investigate how to extend XP to a distributed environment. However the challenge is to carry out the XP approach without conflicting with the distributed constraints. Our work takes place in this way. More precisely, we propose an extension based on assistance for supporting distributed unit testing, one of the key principles of XP methodology. La programmation eXtrème dite XP (eXtreme Programming) est une méthodologie efficace de développement rapide de logiciels qui exige que les membres d'une équipe de développeurs soient physiquement proches les uns des autres. Des travaux de recherche tentent d'étendre les principes de cette méthodologie à un contexte réparti. Le défi est alors de préserver les qualités fondamentales de l'approche tout en s'affranchissant de la contrai...

Cognitive radio devices have been considered as a key technology for next-generation of wireless communication. These devices in the context of IEEE 802.11 standards and IEEE 802.16 standards, can opportunistically utilize the wireless spectrum to achieve better user performance and improve the overall spectrumutilization efficiency, mainly in the unlicensed 5 GHz bands. However, opportunistic use of wireless spectrum creates news problems such as peaceful coexistence with other wireless technologies, such as the radiolocation systems, as well as understanding the influence of interference that each of these networks can create. In this paper, we suggest a dynamic access model that considerably reduces this interference and allows efficiency and fairness use of the wireless spectrum.