Search results for "PSO."
showing 10 items of 679 documents
CIPRNG: A VLSI Family of Chaotic Iterations Post-Processings for $\mathbb {F}_{2}$ -Linear Pseudorandom Number Generation Based on Zynq MPSoC
2018
Hardware pseudorandom number generators are continuously improved to satisfy both physical and ubiquitous computing security system challenges. The main contribution of this paper is to propose two post-processing modules in hardware, to improve the randomness of linear PRNGs while succeeding in passing the TestU01 statistical battery of tests. They are based on chaotic iterations and are denoted by CIPRNG-MC and CIPRNG-XOR. They have various interesting properties, encompassing the ability to improve the statistical profile of the generators on which they iterate. Such post-processing have been implemented on FPGA and ASIC without inferring any blocs (RAM or DSP). A comparison in terms of …
Sea bass Dicentrarchus labrax (L.) bacterial infection and confinement stress acts on F-type lectin (DlFBL) serum modulation
2014
The F-lectin, a fucose-binding protein found from invertebrates to ectothermic vertebrates, is the last lectin family to be discovered. Here, we describe effects of two different types of stressors, bacterial infection and confinement stress, on the modulation of European sea bass Dicentrarchus labrax (L.) F-lectin (DlFBL), a well-characterized serum opsonin, using a specific antibody. The infection of the Vibrio alginolyticus bacterial strain increased the total haemagglutinating activity during the 16-day testing period. The DlFBL value showed an upward regulation on the first, second and last days and underwent a slight downward regulation 4 days post-challenge. In contrast, the effect o…
Vitamin d and psoriasis pathology in the mediterranean region, valencia (Spain)
2014
Vitamin D has important immunomodulatory effects on psoriasis in the Mediterranean region. To measure vitamin D intake in subjects with and without psoriasis, and to find an association with relevant clinical features, a case-control study was performed using cases (n = 50, 50% participation rate) clinically diagnosed with psoriasis and 200 healthy subjects (39.5% participation rate), leaving a final sample of 104 people. A survey was conducted using a food frequency questionnaire and clinical histories. Cases and controls were compared using univariate and multivariate analyses. We observed insufficient intake of cholecalciferol (vitamin D3) or ergocalciferol (vitamin D2) for both cases an…
Effectiveness of cover crops to reduce loss of soil organic matter in a rainfed vineyard
2020
Cover crops (CCs) minimize the loss of soil in permanent cropping systems where the soil is usually bare due to intense tillage or overuse of herbicides. The topsoil, the richer layer in soil organic carbon and organic matter (OM), is affected by water erosion. Nature-based solutions appear as a suitable option for sustainable farming. In this study, the effectiveness of two years of CC management to reduce the OM loss is evaluated in a rainfed vineyard in a rolling landscape (Huesca, NE Spain). Two sediment traps collected runoff over 15 months. Topsoil OM contents (1.64% and 1.60%) and sediment/soil OM enrichment ratio (2.61 and 3.07) were similar. However, the average annual rate of OM l…
An electrical current smart transducer based on PSoC platform and integrated spin-valve sensor with embedded thin film Ruthenium temperature sensor
2011
This work presents an intelligent electrical current sensor that combines a programmable system on chip (PSoC) with a microfabrication of a giant magnetoresistance sensor (GMR) and resistive temperature detector (RTD). Four spin-valve GMR elements configured in a Wheatstone bridge sense the electrical current, while a thin film RTD based on Ruthenium measures the temperature for spin-valve bridge sensitivity thermal compensation. The mixed signal PSoC allows implement in a single chip all electronic circuits needed to design a smart transducer: the spin-valve biasing, conditioning signal, analog to digital converter, digital signal processing and ports for communications. In the experimenta…
Geometric and numerical techniques to compute conjugate and cut loci on Riemannian surfaces
2014
International audience; We combine geometric and numerical techniques - the Hampath code - to compute conjugate and cut loci on Riemannian surfaces using three test bed examples: ellipsoids of revolution, general ellipsoids, and metrics with singularities on S2 associated to spin dynamics.
Injectivity domain of ellipsoid of revolution. The oblate case.
2010
Study of the convexity of the injectivity domains on an oblate ellipsoid.
E. P. Thompson, une vie de combat
2015
National audience; Grand historien de la classe ouvrière anglaise, figure intellectuelle majeure des débats sur le marxisme dans les années 1960-1970, militant antinucléaire à l’origine d’une critique écologiste du capitalisme : tels furent les visages multiples d’Edward Palmer Thompson, dont l’œuvre continue d’imprégner en profondeur l’ensemble des sciences sociales.
Interfaces électrochimiques et couches minces sondées par ellipsométrie
2020
Spectroscopic ellipsometry (SE) is a non-invasive, non-destructive, and contactless optical technique which is based on the change in the polarization state of light as it is typically reflected from a thin film sample. Often seen primarily as ex situ or of particularly helpful interest to control in situ vacuum growth processes, SE can also be promoted as an analytical tool to diagnose electrolyte-electrode interface during wet processes. I will mainly highlight in this document my researches contributions in this field: (i) the very early growth stages of bismuth telluride electrodeposition, (ii) the physico-chemical properties of oxides grown in the early regime of plasma electrolytic ox…
Analyse locale des sensibilités des lectures angulaires, spectroscopiques et ellipsométriques de la Résonance des Plasmons de Surface en vue de la mi…
2006
The fluorescence labelling, used by the fluorescence biochips, is known to change the charge distribution of the labelled molecules and then modify their biological activity. Among label free biosensors, we choose an optical detection, such as spectroscopic ellipsometry and/or surface plasmon resonance (SPR) of the biolayers.These optical techniques are based on the measurement of both thickness and optical index of the adsorbed biolayer. An AFM statistical measurement of the thickness of functionalized lithographed microstructures has been performed in order to determine the thickness of the biolayers.We have shown that the spectroscopic reading of the SPR phase shift is 100 times more sen…