FRANTIQ : faciliter l’interconnexion des données de la recherche en archéologie et sciences de l’Antiquité

International audienceL’objectif de ce poster est de proposer un modèle prospectif d’enrichissement documentaire de bases de données diverses. IL s'appuie sur le thésaurus multilingue PACTOLS pour l'archéologie et les sciences de l'Antiquité et sur son logiciel de gestion Opentheso. Intégrant les normes de description et d’échange des données spécifiques à leur environnement respectif (ISO 25964 sur l'interopérabilité des thésaurus, XML-SKOS, JSon-LD, identifiants pérennes ARK pour les concepts) et des Webservices, PACTOLS et Opentheso constituent un pivot autour duquel peuvent s'agréger des réservoirs de données, favorisant la visibilité et l'interconnexion des informations dans le web des données

Does Bad News Spread Faster?

Bad news travels fast. Although this concept may be intuitively accepted, there has been little evidence to confirm that the propagation of bad news differs from that of good news. In this paper, we examine the effect of user perspective on his or her sharing of a controversial news story. Social media not only offers insight into human behavior but has also developed as a source of news. In this paper, we define the spreading of news by tracking selected tweets in Twitter as they are shared over time to create models of user sharing behavior. Many news events can be viewed as positive or negative. In this paper, we compare and contrast tweets about these news events among general users, while monitoring the tweet frequency for each event over time to ensure that news events are comparable with respect to user interest. In addition, we track the tweets of a controversial event between two different groups of users (i.e., those who view the event as positive and those who view it as negative). As a result, we are able to make assessments based on a single event from two different perspectives

A Novel Conceptual Architecture for Person-Centered Health Records

Personal health records available to patients today suffer from multiple limitations, such as information fragmentation, a one-size-fits-all approach and a focus on data gathered over time and by institution rather than health conditions. This makes it difficult for patients to effectively manage their health, for these data to be enriched with relevant information from external sources and for clinicians to support them in that endeavor. We propose a novel conceptual architecture for person-centered health record information systems that transcends many of these limitations and capitalizes on the emerging trend of socially-driven information systems. Our proposed personal health record system is personalized on demand to the conditions of each individual patient; organized to facilitate the tracking and review of the patient's conditions; and able to support patient-community interactions, thereby promoting community engagement in scientific studies, facilitating preventive medicine, and accelerating the translation of research findings

Injection molding simulation : Taking into account the process history to predict the anisotropy in the end-use properties

Reprinted with permission from AIP Conf. Proc May 17, 2007 Volume 908, pp. 355-360 MATERIALS PROCESSING AND DESIGN; Modeling, Simulation and Applications; NUMIFORM '07; Proceedings of the 9th International Conference on Numerical Methods in Industrial Forming Processes; doi:10.1063/1.2740837. Copyright 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of PhysicsInternational audienceThis work's context is an industrial project aiming the accurate modeling of the injection molding process. 3D numerical simulation of the different stages is considered: during processing, anisotropy of the stress state build up affects its mechanical, optical or dimensional properties, and induces warpage once the part is ejected. A first example of injection molding of reinforced thermoplastics will be treated. In this case, we will consider that during the injection step, an orientation will be induced by the flow. Furthermore, the thermoplastic matrix will pass from the liquid to the solid state, and orientation and stresses will remain frozen. Evolution of orientation or extra stress is computed using the Folgar and Tucker equation, with continuous or discontinuous approximations. Results are obtained in a 3D complex industrial part

Wavelet Constrained Regularization For Disparity Map Estimation

This paper describes a novel method for estimating dense disparity maps, based on wavelet representations

Injection moulding of fibre reinforced thermoplastics: integration of fibre orientation and mechanical properties computations

International audienceInjection moulding is widely used to process short fibre reinforced thermoplastics. The quality and especially the mechanical properties of the resulting part are linked to the mould conception (for example the gate(s) and the venting port(s) locations) and to the processing parameters which will govern fibre orientation distribution. Fibre orientation modelling is based on the well known Folgar and Tucker equation which differ one from another by the interaction parameter, the closure approximation and by the coupling with the rheology of the reinforced melt. Quantitative comparison with experiments is very tedious and generally limited to simple part geometries (plaque or disk). As a consequence, in complex geometries, fibre orientation distribution is experimentally checked using several techniques and the resulting anisotropic thermomechanical properties are computed using various homogenization theories. In this paper, we propose an integrated approach of the injection moulding of fibre reinforced thermoplastics starting from rheology of the material, orientation equation, interaction parameter and closure approximation. The resulting local fibre orientation distribution is then used in two ways in order to predict the mechanical properties of the part: First, using classical analytical homogenization theories but based on the computed orientation tensor and not on an experimental one, then, using numerical homogenization which consists in generating a Representative Elementary Volume (REV), by determining its unidirectional mechanical properties and finally, in computing directly the anisotropic properties of the part