Grapheme-phoneme correspondences constitute the essence of alphabetical code. Nevertheless,increasing numbers of studies showed the importance of orthography-morphemecorrespondences. These two types of correspondences might be taken into account whenmodelling reading development. Moreover, whatever the code concerned, it is likely that twotypes of processes are involved in learn...

Les théories implicites de l’intelligence désignent des croyances concernant la modifiabilité l’intelligence. états d’esprit « développement » et fixiste considèrent respectivement comme une caractéristique qui peut ou ne pas être modifiée. La psychologie en tant que science offre, elle aussi, réponses contrastées à cette question. approches développementales différentielles fournissent diverge...

This paper introduces a numerical method for the solution of the nonlinear elliptic Monge-Ampère equation. The boundary conditions correspond to the optimal transportation of measures supported on two domains, where one of these sets is convex. The new challenge is implementing the boundary conditions, which are implicit and non-local. These boundary conditions are reformulated as a nonlinear H...

In these notes, we present a general framework to compute the codimension one part of the elimination ideal of a system of homogeneous polynomials. It is based on the computation of the so-called MacRae’s invariants that we will obtain by means of determinants of complexes. Our approach mostly uses tools from commutative algebra. We begin with some basics on elimination theory and then introduc...

The problem of the vibration of a string is well known in its linear form, describing the transversal motion of a string, nevertheless this description does not explain all the observations well enough. Nonlinear coupling between longitudinal and transversal modes seams to better model the piano string, as does for instance the “geometrically exact model” (GEM). This report introduces a general...

The numerical integration of switching circuits is known to be a tough issue when the number of switches is high, or when sliding modes exist. Then classical analog simulators may behave poorly, or even fail. In this paper it is shown on two examples that the nonsmooth dynamical systems (NSDS) approach, which is made of 1) a specific modelling of the piecewiselinear electronic devices (ideal di...

The number of transistors that can be put on a given silicon area doubles on every technology generation. Consequently, the number of on-chip cores increases quickly, making it possible to build general-purpose processors with hundreds of cores in a near future. However, though having a large number of cores is beneficial for speeding up parallel code sections, it is also important to speed up ...

Article history: Received 16 June 2011 Accepted 18 August 2011 Available online xxxx Presented by Olivier Pironneau We propose a method for structural optimization that relies on two alternative descriptions of shapes: on the one hand, they are exactly meshed so that mechanical evaluations by finite elements are accurate; on the other hand, we resort to a level-set characterization to describe ...