A complete catalogue of galaxy cluster models can be used to constrain cosmological parameters like 8 , the amplitude of the initial density uctuation spectrum. We focus here on two strong lensing statistics for clusters of galaxies: the fraction of rich Abell clusters that are critical to lensing, and the abundance of arcs in such clusters, especially the X-ray luminous ones. The speciic aim o...

This paper describes about a new method for reconstructing a shape of a skin surface replica from three shading images taken with three di erent lightings. Since the shading images include shadows caused by surface height uctuation, the conventional photometric stereo method is not suitable for reconstructing its surface shape. In the proposed method, the evaluation function of the surface shap...

A unifying theoretical framework for analyzing stochastic data from single-particle tracking (SPT) in viscoelastic materials is presented. A generalization of the bead-spring model for linear polymers is developed from a molecular point of view and from the standpoint of phenomenological linear viscoelasticity. The hydrodynamic interaction in the former is identiied as the dashpots in the latte...

The equivalence of the discretized equations resulting from both uctuation splitting and nite volume schemes is demonstrated in one dimension. Scalar equations are considered for advection, di usion, and combined advection/diffusion. Analysis of systems is performed for the Euler and Navier-Stokes equations of gas dynamics. Non-uniform mesh-point distributions are included in the analyses.

In the context of the dynamical evolution in a non-stationary thermal bath, we construct a family of uctuation relations for the entropy production that are not veri ed by the work performed on the system. We exhibit uctuation relations which are global versions either of the generalized Fluctuation-Dissipation Theorem around a non-equilibrium di usion or of the usual Fluctuation-Dissipation Th...

The power spectra for the daily Dow Jones average, both the original series and the de-trended series, are calculated. The spectra are of the form 1/ fCi with a close to 2 instead of 1. Also studied is the distribution of daily price changes which is in-between an exponential and a power law function. With certain criterion, this result suggests that stock market activities may not be qualified...

Eternally innating universes can contain large thermalized regions with different values of the constants of Nature and with diierent density uctuation spectra. To nd the probability for a `typical' observer to detect a certain set of constants, or a certain uctuation spectrum, one needs to compare the volumes occupied by diierent types of regions. If the volumes are taken on an equal-time hype...

This paper considers segregation in collisional granular shearing ows from the experimental, computational, and theoretical standpoints. We focus on a phenomenon of segregation where the separation of grains by size or mass is driven by spatial gradients in the uctuation energy of the grains. We report experiments carried out in microgravity with a shear cell shaped as a race track and containi...

des erreurs de frannais (ce qui est fort improbable), priire de prendre directement contact avec lui. Avertissement: ce paragraphe ne peut tre entiirement apprrcii que par J-C. Bolot et l'auteur :-) 6 Abstract Real-time multimedia applications require resource allocation because of their quality of service (QoS) requirements. On the other hand, network eeciency depends crucially on the degree o...