X-ray Diffraction Spectroscopy Studies of CuIn2n+1S3n+2 Thin Films

CuIn2n+1S3n+2 (where n = 0, 1, 2, 3 and 5) thin films were deposited at different substrate temperatures (30, 75, 100, 150 and 200 ◦C) by vacuum evaporation. The films were characterized for their structural properties by using X-ray diffraction (XRD). From the XRD data, we calculated the grain size, the lattice strain, the lattice parameters and the dislocation density for the preferential orientation of CuIn2n+1S3n+2 thin films. The effect of the substrate temperature on the structural crystalline quality of the films was also investigated

Reinforcement Q-Learning and Neural Networks To Acquire Negotiation Behaviors

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Architecture d’agent hybride à comportement tempéramental et Rationnel

International audienceLe présent ouvrage s'intéresse à la modélisation d'agent hybride doté d'un certain niveau d'intelligence et de sa mise en oeuvre dans un processus de négociation automatisée. Incorporant un modèle paramétrable de comportement tempéramental approchant les postures telles que la conciliation, l'agressivité ou neutralité, et développant une aptitude rationnelle de collaboration, de partage des gains ou d'intransigeance, un tel agent offre le potentiel d'une prise en compte de l'impact de la personnalité dans un processus de négociation à travers une mise en oeuvre virtuelle de celle-ci. Les concepts régissant de tels agents hybrides amorcent les perspectives d'une négociation automatisée à base d'agents virtuels. L'ouvrage rapporte également une étude de cas simulant une négociation bilatérale portant sur la recherche d'un accord sur le prix d'une transaction (achat-vente) impliquant un agent conventionnel (à base du modèle temporel de Faratin) et d'un agent hybride incorporant les concepts développés dans cet ouvrage

SISINE: a Negotiation Training Dedicated Multi-Player Role Playing Platform Using Artificial Intelligence Skills

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Refoule (François) Au bord du schisme ? L'affaire d'Amsterdam et l'Eglise de Hollande

Poulat Emile. Refoule (François) Au bord du schisme ? L'affaire d'Amsterdam et l'Eglise de Hollande. In: Archives de sociologie des religions, n°28, 1969. pp. 239-240

Optical characterization of nano-structured Cu2ZnSnS4 thin films deposited by GLAD technique

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Impedance spectroscopy characterization of anisotropic nano-sculptured copper oxide Cu 2 O thin films for optoelectronic applications

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Effect of SnS addition on the morphological and optical properties of (SnS)m (Sb 2 S 3 )n nano-rods elaborated by glancing angle deposition

International audience(SnS)m(Sb2S3)n thin films were prepared by thermal evaporation using the glancing angle deposition technique (GLAD). The incident angle between the particle flux and the normal to the substrate was fixed at 80°. The Raman and XRD characterization revealed the amorphous character of the films due to the columnar structure as shown by the SEM characterization and AFM analysis. A strong change of the surface morphology of the films was observed and it depends on the composition. Optical properties were extracted from transmittance T and reflectance R spectra. (SnS)m(Sb2S3)n thin films exhibit high absorption coefficients (104–2 × 105 cm−1) in the visible range and the higher values were obtained for Sn3Sb2S6 and it has the highest photocurrent values. The direct band gap (Eg dir) was in the range 2.11–1.67 eV. The refractive indices are calculated from optical transmittance spectra of the films. The Sn3Sb2S6 sample exhibits a lower refractive index. All the dispersion curves of refractive index match well with the Cauchy dispersion formula and they were analyzed using Wemple-DiDomenico model. The Bruggeman effective medium approximation EMA was used to calculate the packing density of different compositions, and SnSb4S7 sample has the highest value. The so-called Verdet coefficient was evaluated from refractive index dispersion, and it was enhanced near the band gap

Distributions and sources of persistent organic pollutants (aliphatic hydrocarbons, PAHs, PCBs and pesticides) in surface sediments of an industrialized urban river (Huveaune), France

International audienceSurface sediments from the Huveaune River were analyzed for n-alkanes, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), organochlorine and organophosphorous pesticides (OCs and OPs) by using gas chromatography-mass spectrometry (GC-MS). Concentrations of total alkanes ranged from 184 to 26,780 mu g.kg(-1) sediment dry weight (dw) with a mean concentration of 6126 +/- 8006 mu g-kg(-1) dw, concentrations of total PAHs ranged from 572 to 4235 mu g.kg(-1) dw with a mean concentration of 1966 +/- 1104 mu g.kg(-1) dw, concentrations of total PCB ranged from 2.8 to 435 mu g.kg(-1) dw with a mean concentration of 148 164 mu g.kg(-1) dw and concentrations of total pesticides ranged from 0.07 to 1.25 mu g.kg(-1) dw with a mean concentration of 1.23 +/- 1.29 mu g.kg(-1) dw. The spatial distribution of POPs reveals that pollutant concentration is relatively higher at the mouth of the river. The molecular indices of specific n-alkanes (CPI, NAR and TAR) and molecular indices of PAHs (Ant/(Ant + Phe), Fl/(Fl + Pyr), BaA/(BaA + Chry), IPyr/(Ipyr + BghiP)) were calculated to evaluate the possible sources of hydrocarbons. These molecular indices suggest mainly pyrolytic inputs which are markedly biogenic. All contaminant levels were also compared with Sediments Quality Guidelines (SQG) showing that the contamination levels in all stations were most of the time lower than their respective SQG. While, for PCBs, five stations (H5, F16,H7, HE and H9) were higher than their effect range median (ERM) values which may indicate high potential toxicity of the sediment with probable adverse effects to the living biota. (c) 2014 Elsevier B.V. All rights reserved