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Ce rapport décrit la réalisation d'une interface permettant à un opérateur d'extraire de l'image d'un texte manuscrit des prototypes de caractères et des les accumuler dans une base de données devant servir ultérieurement à la reconnaissance de l'écrit. L' ...
The structure df atmospheric surface layer turbulence low wavenumbers was analyzed using 56 Hz triaxial velocity and temperature measurements above a uniform dry lake bed, A key feature of this experiment was the, small roughness length of the surface that ...
Microsegregation in a binary alloy solidified in the form of deep cells is predicted using a simplified finite difference model. The model accounts for solid state diffusion and for flow of liquid between cells driven by solidification shrinkage. Cell tip ...
The typology of the underground waters of the flyschs of the Niesen and Gurnigel tectonic nappes form part of the AQUITYP project which has been worked on by the geology laboratory of the Swiss Federal Institute of Technology in Lausanne since 1981. Its pr ...
The conditional sampling formulation typically used in eddy accumulation flux measurements was tested at two sites using velocity, temperature, and specific humidity time series measurements. The first site was at Owen's Lake in southern California, and th ...
We present a new experiment which is able to monitor mass-selected cluster depositions in red time using specular reflected thermal helium scattering. Ag/sub 7//sup +/ with an incident energy of 2.86 and of 13.6 eV/atom is deposited on Pd(100) at different ...
CoNiCu/Cu superlattice nanowires have been grown by electrodeposition in nuclear tracketched nanoporous membranes. Transmission electron microscopy (TEM) images show a good layer structure and allow an estimate of the current efficiency. Current perpendicu ...
Longitudinal velocity measurements above a uniform dry lakebed were carried out to investigate the applicability of the random sweeping decorrelation hypothesis to thermally stratified turbulent flow. The higher order velocity structure functions of order ...
Orthonormal wavelet expansions are applied to surface-layer measurements of vertical wind speed under various atmospheric stability conditions. The orthonormal wavelet transform allows for the unfolding of these measurements into space and scale simultaneo ...
Different types of mixing cell models are analysed in detail. One type is found to be second-order accurate when reactions are not considered but reduces to first-order accuracy when a sorption reaction is taken into account. The second type is only first- ...
