846 research outputs found

    Czech Contribution to LOFT

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    We describe the current status of the Czech contribution to the ESA LOFT space mission, with emphasis on technical aspects. Expertise available in the Czech Republic will play a positive role in the LOFT project and related developments

    Optical Response of Plasmonic Nanohole Arrays: Comparison of Square and Hexagonal Lattices

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    Nanohole arrays in metal films allow extraordinary optical transmission (EOT); the phenomenon is highly advantageous for biosensing applications. In this article, we theoretically investigate the performance of refractive index sensors, utilizing square and hexagonal arrays of nanoholes, that can monitor the spectral position of EOT signals. We present near- and far-field characteristics of the aperture arrays and investigate the influence of geometrical device parameters in detail. We numerically compare the refractive index sensitivities of the two lattice geometries and show that the hexagonal array supports larger figure-of-merit values due to its sharper EOT response. Furthermore, the presence of a thin dielectric film that covers the gold surface and mimics a biomolecular layer causes larger spectral shifts within the EOT resonance for the hexagonal array. We also investigate the dependence of the transmission responses on hole radius and demonstrate that hexagonal lattice is highly promising for applications demanding strong light transmission.Brno University of Technology (Project CZ.1.07/2.3.00/30.0039

    Study of Nuclear Suppression at Large Forward Rapidities in d-Au Collisions at Relativistic and Ultrarelativistic Energies

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    We study a strong suppression of the relative production rate (d-Au)/(p-p) for inclusive high-pT hadrons of different species at large forward rapidities (large Feynman xF). The model predictions calculated in the light-cone dipole approach are in a good agreement with the recent measurements by the BRAHMS and STAR Collaborations at the BNL Relativistic Heavy Ion Collider. We predict a similar suppression at large pT and large xF also at lower energies, where no effect of coherence is possible. It allows to exclude the saturation models or the models based on Color Glass Condensate from interpretation of nuclear effects.Comment: Revised version (6 pages, 4 figures) to appear in Physical Review

    Creation of 3D human model and animation for display sign language

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    katedra: ITE; přílohy: 1 CD; rozsah: 37 s.Tato bakalářská práce popisuje vytvoření 3D modelu lidského těla s následnou možností animace pro využití k vizualizaci znakového jazyka. Program byl vytvořen za pomocí jazyku pro popis virtuální reality VRML a univerzálních knihoven jazyka C++, které jsou volně dostupné. V projektu je rozvedena tématika grafických transformací v prostoru a metodika tvorby modelu a programu pro vytvoření pohybu.This bacalary studie describe creation of 3D model of human body with possibility of animation and vizualization of sign language. Program was made with help of language for description virtual reality VRML and universal librares language C++, which are freelly available on website. This project eleborates subject graphics transformations in space and methods of creation model and also program for creating movement
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