MOTIVATION Many methods have been described to identify regulatory motifs in the transcription control regions of genes that exhibit similar patterns of gene expression across a variety of experimental conditions. Here we focus on a single experimental condition, and utilize gene expression data to identify sequence motifs associated with genes that are activated under this experimental conditi...

The stainability of neural elements is determined during the various stages of tissue preparation which precede impregnation. The hypothesis (Romanes, 1950) that variations in the physiological state of the neurones at the time of fixation might influence the stain was examined. Feeding and anaesthesia did not influence the staining of gastric nerve fibres under the conditions of the experiment...

The most popular instrumentation used in the Electrical Engineering, presents edges that in the presence of an important electric field, act like as concentrating of electrostatic load and for they turn in the points with major probability of acting as way of an electrostatic discharge. The study from the electrostatic point of view of the behaviour of an edge, presents a singularity, since in ...

In this paper, we describe a technique for the computation of augmented surface patches from stereo images. The stereo vision data is represented as patchlets, which are planar surface elements that have a position, surface normal, size, and confidence measures on the position and normal direction. To estimate the patchlet parameters, we use probabilistic image alignment. Whereas the patchlet g...

A pseudospectral method for the analysis of diffractive optical elements is presented. This method is a fullvectorial direct solution of the time-domain Maxwell equations based on a spectral approximation of the spatial derivatives employed within a multidomain framework. The method exhibits little numerical dispersion, and only a few points per wavelength are needed to accurately resolve the p...

Cet article s’appuie sur une enquête ethnographique réalisée au Burkina Faso, dans la ville de Ouagadougou, auprès des acteurs privés locaux transformation agroalimentaire. L’étude a révélé l’existence, ce domaine, d’un système largement soutenu par les l’aide internationale qui cristallise le « secteur informel » en un véritable économique parallèle : l’« économie survie ». L’enquête met évide...

Boundary elements method is well-suited for computational acoustics. The main profit it brings is reduction in number of unknowns compared to FEM. However, application of BEM to sound scattering problems has shown, that this advantage is lost in case of high frequency waves. High frequencies require larger number of elements which contradicts the initial purpose of using BEM in solvers and may ...

An optimal-order multigrid method for solving second-order elliptic boundary value problems using PI nonconforming finite elements is developed.