Un nouveau regard sur la trahison de Judas au XIIe siècle: Li Romanz de Dieu et de sa Mere d’Herman de Valenciennes

Un nouveau regard sur la trahison de Judas au XII e siècle : Li Romanz de Dieu et de sa Mere d’Herman de Valenciennes HÉLÈNE AVERSENG Université d’Angers et Università degli Studi di Pisa As far as we know, Li Romanz de Dieu et de sa Mere , written in the 12 th century by Herman de Valenciennes, is the first abridged version of the Old French Bible. We believe that it is worth giving particular attention to the way Judas is represented here. Not only a biblical figure is interestingly turned into a literary figure, but new ideas on the fate of the character expressed in the text reveal a significant change in the interpretation of the biblical episode. Herman de Valenciennes builds Judas’ betrayal of Jesus on ambiguity that is entailed by hesitating on the demonization of the character, but also by the evolution and the hybridization of the literary devices. Judas’ treason, his repentance and suicide appear in a new light, which means reinterpreting the Scriptures and reviving the exegetical tradition

The virtues of process documentation in integration of standardisation constraints: the case of an industrial entity

Standardisation constraints (SOX, ISO) which are imposed upon companies are numerous and take different forms. Organizations must find tools which allow the integration of these constraints into their strategy. This study aims to show that process documentation can be a standardisation integration tool. We propose to focus on the real case of an IT industrial enterprise which has developed a process documentation to face standardisation issues. Process documentation then seems to be a promising theoretical way to deal with transverse managerial problems such as standardisation. From a practical view, audits have been greatly improved in terms of speed and quality of information produced, but also in terms of continuous improvement practices. The major originality of this research is to show that process documentation can deal with the problems of standardization, but it is also a tool for process management

Boundary Element Methods for the Laplace Hypersingular Integral Equation on Multiscreens: a two-level Substructuring Preconditioner

We present a preconditioning method for the linear systems arising from the boundary element discretization of the Laplace hypersingular equation on a $2$-dimensional triangulated surface $\Gamma$ in $\mathbb{R}^3$. We allow $\Gamma$ to belong to a large class of geometries that we call polygonal multiscreens, which can be non-manifold. After introducing a new, simple conforming Galerkin discretization, we analyze a substructuring domain-decomposition preconditioner based on ideas originally developed for the Finite Element Method. The surface $\Gamma$ is subdivided into non-overlapping regions, and the application of the preconditioner is obtained via the solution of the hypersingular equation on each patch, plus a coarse subspace correction. We prove that the condition number of the preconditioned linear system grows poly-logarithmically with $H/h$, the ratio of the coarse mesh and fine mesh size, and our numerical results indicate that this bound is sharp. This domain-decomposition algorithm therefore guarantees significant speedups for iterative solvers, even when a large number of subdomains is used

Toward direct numerical simulation of high speed droplet impact

International audienceWhen a liquid drop impacts a solid surface or a liquid film, several outcomes are possible. In particular, splashing phenomena can exhibit complex behaviors, like the formation of very thin crowns and emission of small droplets. Underlying mechanisms are hard to elucidate, partly due to the difficulty for current experimental devices to access the very small length scales involved. Here, we use direct numerical simulation to explore low and high velocity drop impact phenomena. We show that classical incompressible two-phase methods can be sufficient to address low energy impacts and take into account wetting phenomena. However, dedicated robust and conservative methods are needed to simulate splashing phenomenon at higher velocities. In our test cases, we show that an impact on a thick liquid film exhibits thick crown formation and delayed splashing. On a dry wall, on the other hand, splashing phenomenon can be difficult to reproduce even with high velocity impacts. We show however how a higher value of the surrounding air density may trigger splashing. The presence of a very thin liquid film on the wall strongly modifies impact outcome, forcing the ejection of a thin crown and subsequent secondary droplet emission

Behavior of beam web panel under opposite patch loading

International audienceElastic buckling is studied for a panel with various boundary conditions including simple supports, fixed supports and elastic restraints. The panel is subjected to opposite patch loading. Following a review of existing work on the effects of localized compression, also known as patch loading, a study is conducted to take into account the restraints provided by the flanges of the I beam in a realistic manner. This study is based on a finite element model implemented in the CAST3M software. A new equation is proposed to calculate the buckling critical coefficient for a beam web panel considering the rotational stiffness provided by the flanges. The model is then applied to longitudinally stiffened web panels which are subjected to opposite patch loading.A parametric analysis is performed to determine the transition from a global buckling mode to a local buckling mode where the sub-panels on each side of the stiffener behave separately. The numerical results show that the flexural rigidity of the stiffener is the appropriate parameter that governs the buckling mode. From these results, a formula is proposed to calculate the buckling critical coefficient of stiffened web panels

Pratiques de Knowledge Management en région Languedoc Roussillon

L'objet de cette recherche est d'analyser le comportement des entreprises de la région Languedoc Roussillon en matière de management des connaissances, de faire un état des lieux des pratiques et de leur évolution. En particulier il est mis en évidence les objectifs des entreprises (veille concurrentielle, gestion de la relation client, capitalisation des savoirs, amélioration des processus d'échange d'informations...), les outils déployés (bases de données, logiciels de travail collaboratif...), ainsi que les dispositifs organisationnels et de gestion des ressources humaines mobilisés. Les problèmes rencontrés dans la mise en oeuvre des politiques de management des connaissances seront également soulignés (culture, réticences...).knowledge management; outils; pratiques; état des lieux