653 research outputs found

    Outschool, plateforme Web pour camps scolaires

    Get PDF
    Le projet outschool.ch est une start-up aidée par "Buisiness Expérience" qui propose aux différentes personnes tel que des professeurs de les aider à organiser des camps scolaires. En date du 17 mai 2010, l'entreprise outschool ne dispose pas encore de plateforme Web. Toutes demandes faites par des personnes désirant organiser des camps scolaires, sont traitées de manière manuelle. L'idée de ce projet et d'informatiser au maximum le processus de réservation afin de diminuer la masse de travail manuel de l'équipe outschool. Une version 1.0 a été mise en production au début du mois de juin 2010. Mais cette version ne fait que de proposer un formulaire qui envoie un courriel à l'équipe d'outschool avec les besoins nécessaires. Le traitement se fait ensuite de manière manuelle. La version 1.1 qui est développée dans le cadre de ce travail de bachelor offre les différentes fonctionnalités : Possibilité à une personne désirant mettre à disposition des utilisateurs de la plateforme faisant une réservation un bien ou un service. Pour ces personnes-là, un outil de gestion de leurs biens ou services sera également mise en place sous forme de gadget Windows. Un formulaire dynamique de réservation donnera la possibilité à l'utilisateur de choisir lui-même les biens ou les services désirés parmi une liste affichée suivant différents paramètres. Toutes les réservations, composées de différents biens ou services ainsi que les coordonnées de contact, seront enregistrées dans une base de données. Cette plateforme permettra aussi l'intégration des biens ou de services depuis des bases de données externes

    On the influence of a DC magnetic field upon a bubble

    Get PDF
    International audienceMolten Salt Fast Reactor (MSFR) is a new fast nuclear reactor, which is at present under memoranda and understanding (MOU) from Generation IV International Forum (GIF). In the MSFR concept, fissile material dissolved in molten fluoride salts serves as a liquid fuel in a primary loop. One of the issues that need to be addressed is the development of an extraction technique of fission products from the fuel [1]. The technique addressed here is based on the injection of helium bubbles in the molten salt in order to absorb fission products by liquid/gas mass transfer. Solid particles are expected to adsorb at bubble surfaces as well. Taking into account that molten salts, as a continuous phase, are electrically conductive, an externally applied magnetic field offers opportunities for a contactless flow control. In addition, the jump in electrical conductivities between molten salts and contaminated bubbles is expected to enhance electromagnetic separation of gaseous phase after ad/absorption processes. To address this online extraction, it is important to simulate the dynamics of bubbles flowing in a molten salt, taking into account magnetohydrodynamics of the liquid phase. Numerical simulations of the process are performed with a CFD code based on finite volume method (ANSYS FLUENT). Bubble surfaces are captured by Volume of Fluid (VOF) strategy while the electric current densities are calculated in the carrier phase by making use of the Magnetic Induction Method. In this way, we are able to describe bubble deformation due to the hydrodynamic forces and the Lorentz force, which makes the fluid to circulate mainly in planes perpendicular to the magnetic field. We investigate the transient regime required to get the terminal bubble velocity. The way the magnetic field is able to change the streamlines around a bubble is particularly investigated while varying the Hartmann number

    Humean Constructivism and Deliberative Coherence

    Get PDF
    According to Humean constructivism in metaethics, there is no incoherence in holding that different agents should act on aims that are not co-possible. I will show that this commitment undermines Humean constructivists’ own treatment of normative judgments, where these judgments are meant to function both as prescriptions and assertions of fact. When ideally coherent Humeans engage others in conversation, their claims about others’ reasons to act function as imperatives rather than as assertions; conversely, when Humean reasoners think of those claims while deliberating on their own, they carry no prescriptive weight at all. In light of these issues, I propose that coherence in normative judgment should take into account the joint realizability of agents’ aims. To act on reasons involves acting on aims the agent thinks are worth pursuing. And actions whose aims are in conflict cannot be successfully performed together. I argue that where aims conflict, so do the prescriptions for acting on them
    corecore