Sensor networks, in particular those used in embedded devices like robots, impose drastic temporal constraints and low-power consumption. The design of the physical layer and optimization of the medium access control are major keys for fulfilling these constraints. The low-power wireless personal area network IEEE 802.15.4 offers protocol and topology oriented toward this problem. However, seve...

— This paper presents our work in the field of Intelligent Tutoring System (ITS), in fact there is still the problem of knowing how to ensure an individualized and continuous learners follow-up during learning process, indeed among the numerous methods proposed, very few systems concentrate on a real time learners follow-up. Our work in this field develops the focuses on the use of the learner ...

Ascidians are marine invertebrate chordates, which display a larval body plan similar to that of vertebrates. Their embryos are composed of a small number of cells and develop with an invariant cell lineage. In addition, genomes for two species are available [1]. These characteristics make this system a unique opportunity to understand the developmental strategies of a chordate at the embryolog...

Friction Stir Welding (FSW) is a recent assembly process which has been developed at the British Institute (TWI) beginning of 90's. This welding gone rapid development and an increasing success. Many remarkable industrial applications achieved mainly in spatial, aeronautical, automobile, railways, marine naval industries.... The translation rotation tool during FSW generate flow plastic deforma...

Most industrial manipulator robots are used in assembly tasks. Their manufacturers use repeatability parameters to show their effectiveness. ISO9283 standard details the process of measuring repeatability. As loads, speed and other various factors affect repeatability, a high number of experimental trials are needed to obtain significant values. Moreover, repeatability is also affected by the l...

A gynaecological applicator consisting of a metallic intra-uterine tube with a plastic vaginal applicator and an HDR Ir-192 source have been simulated with MCNP5 (Monte Carlo code). A solid phantom has been designed to perform measurements around the applicator with radiochromic films. The isodose curves obtained are compared with curves calculated with the F4MESH tally of MCNP5 with a good agr...

Otolith are small stone growing according to an accretionary process located in fishes inner ears from which a lot can be learnt about their biology and ecology. Computer vision is one of the mean of systematic analysis of those stone. This paper describe an approach using partial differential equation and variational methods to reconstruct the morphogenesis of an otolith from an image. Résumé....

Problem statement: Nitrification by Moving Bed Biofilm Reactor (MBBR) involves physical, chemical and biological processes to remove toxic ammonia for aquaculture that are governed by a variety of parameters, like substrate and dissolved oxygen concentrations, organic matters, temperature, pH, alkalinity and turbulence level, which impact negatively or positively on nitrification kinetics. App...

Preface To refer to this work use one of these : A few minor corrections have been done so that it cannot be considered as an updated version of the original report. The author wish to thank J.C. Lasseran and A. Lebert for their unmeasurable help. This work couldn't have been done without them. Special thanks also for ITCF and ENSIA's Food Eng. Dept. teams.

In this paper we describe the data that will be used to compare the semantic structures that emerge from synonymy in French and in Mandarin. We aim at studying these semantic structures at both a global, lexicographic level, using lexicons, synonymy and translation dictionaries and at a more localised, experimental level, using data collected in parallel psycholinguistic experiments in French a...