212 research outputs found

    Clusters and Innovation in Ecotourism Development

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    Competitiveness, innovation and the national innovation system (NIS) which connects them, have been transformed and are continually changing in our postindustrial society. This essay investigates the origin and the changes of such systems as well as their main models. The modern state does not only subsidize the competitiveness of its own national economy, as its competitiveness firstly depends on the underlying innovative environment, the so-called ‘innovation milieu’ and the national innovation system, which binds the system together. At a national level it is indispensable for the development of innovation, that the economic policymakers build up a coherent system for promoting tourism. Other tools exist for the development of ecotourism in our region beyond fi nancial sponsoring and these state measures can also be realized. A study of economic co-operation systems and clusters together with innovation progress shows the Italian economic model as one of the most successful in modern Europe. The research on ecotourism clusters and a perceptional research in ‘Belsõ-Somogy’ Ecologic Network are the basis for developing an ecotourism cluster model which is applicable in the Hungarian National Parks and Nature Reserve Areas.innovation,national innovation system,development,tourism,ecotourism clusters

    Design and Performance of the Data Acquisition System for the NA61/SHINE Experiment at CERN

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    This paper describes the hardware, firmware and software systems used in data acquisition for the NA61/SHINE experiment at the CERN SPS accelerator. Special emphasis is given to the design parameters of the readout electronics for the 40m^3 volume Time Projection Chamber detectors, as these give the largest contribution to event data among all the subdetectors: events consisting of 8bit ADC values from 256 timeslices of 200k electronic channels are to be read out with ~100Hz rate. The data acquisition system is organized in "push-data mode", i.e. local systems transmit data asynchronously. Techniques of solving subevent synchronization are also discussed.Comment: 14 pages, 13 figure

    Near-infrared optical properties and proposed phase-change usefulness of transition metal disulfides

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    The development of photonic integrated circuits would benefit from a wider selection of materials that can strongly-control near-infrared (NIR) light. Transition metal dichalcogenides (TMDs) have been explored extensively for visible spectrum opto-electronics, but the NIR properties of these layered materials have been less-studied. The measurement of optical constants is the foremost step to qualify TMDs for use in NIR photonics. Here we measure the complex optical constants for select sulfide TMDs (bulk crystals of MoS2, TiS2 and ZrS2) via spectroscopic ellipsometry in the visible-to-NIR range. Through Mueller matrix measurements and generalized ellipsometry, we explicitly measure the direction of the ordinary optical axis. We support our measurements with density functional theory (DFT) calculations, which agree with our measurements and predict giant birefringence. We further propose that TMDs could find use as photonic phase-change materials, by designing alloys that are thermodynamically adjacent to phase boundaries between competing crystal structures, to realize martensitic (i.e. displacive, order-order) switching.Comment: supplementary at end of document. 6 main figure

    First report of Serratia marcescens from oleander in Hungary

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    Oleander (Nerium oleander L.) is a popular woody ornamental plant, often used for decorating public areas, terraces and gardens. Many diseases may decrease in the ornamental value of these plantings. Between 2018 and 2020, plant pathogenic bacteria of oleander were examined, and many samples of infected plants were collected from different sites in Hungary. Two non-pigmented Serratia marcescens isolates were identified from oleander by classical and molecular methods. The isolates caused necrotic lesions on oleander leaves. Serratia marcescens is known as an opportunistic mammal or plant pathogen, but non-pathogenic strains are known to be useful biological control agents or plant growth-promoting bacteria. This is the first report of the plant pathogen S. marcescens from oleander, and the first identification of the bacterium in Hungary.

    Degradation Analysis of DC-Link Aluminium Electrolytic Capacitors Operating in PWM Power Converters

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    The most common failure mode of aluminium electrolytic capacitor is the so-called wear out fault. It is caused by the high core temperature of the capacitor. Therefore, life cycle calculations generally use temperature data to estimate degradation level. Core temperature-based life cycle calculations can consider different current loads on capacitors. The calculation method uses scaling factors for different ripple current waveforms. However, it is not observed that temperature only is responsible for aging, but current waveform also influences the level of degradation. Therefore, sinusoidal and PWM-loaded capacitor tests were performed under the same temperature conditions. The results show that the pore distribution of aluminium anode foil has changed during the test. The pore diameter reduces and it leads to an increase in the ESR value and decrease in the capacitance, electrolyte amount and weight. Comparative results show that the PWM-loaded capacitor is more degraded than the capacitor loaded by sinusoidal test current

    Signature of QCD critical point: Anomalous transverse velocity dependence of antiproton-proton ratio

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    We formulate the QCD critical point focusing effect on transverse velocity (βt\beta_{t}) dependence of antiproton to proton (pˉ/p\bar{p}/p) ratio, which was recently proposed by Asakawa {\it et al.} as an experimental signature of QCD critical point in high energy heavy ion collisions (HICs). For quantitative analysis, Ultra-relativistic Quantum Molecular Dynamics (UrQMD) transport model and THERMal heavy-IoN generATOR (THERMINATOR) are applied to calculate the corresponding βt\beta_{t} dependence of pˉ/p\bar{p}/p ratio for three gedanken focused isentropic trajectories with different focusing degree on QCD phase diagram. Finally, we obtained an observable anomaly in βt\beta_{t} dependence of pˉ/p\bar{p}/p ratio, which can be employed as a signature of QCD critical point.Comment: 5 pages, 6 figures; To be published on Physics Letters

    Hadron calorimeter with MAPD readout in the NA61/SHINE experiment

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    The modular hadron calorimeter with micro-pixel avalanche photodiodes readout for the NA61/SHINE experiment at the CERN SPS is presented. The calorimeter consists of 44 independent modules with lead-scintillator sandwich structure. The light from the scintillator tiles is captured by and transported with WLS-fibers embedded in scintillator grooves. The construction provides a longitudinal segmentation of the module in 10 sections with independent MAPD readout. MAPDs with pixel density of  104~10^{4}/mm2^2 ensure good linearity of calorimeter response in a wide dynamical range. The performance of the calorimeter prototype in a beam test is reported

    QCD Phase Diagram: Phase Transition, Critical Point and Fluctuations

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    A summary of discussions on selected topics related to QCD phase diagram, phase transition, critical point, fluctuation and correlations at the Quark Matter 2009 conference are presented.Comment: Summary of the discussions on QCD Phase Diagram at 21st International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (QM2009), March 30 - 4 April, 2009, Knoxville, Tennessee, USA. New references adde

    Phase-space dependence of particle-ratio fluctuations in Pb+Pb collisions from 20A to 158A GeV beam energy

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    A novel approach, the identity method, was used for particle identification and the study of fluctuations of particle yield ratios in Pb+Pb collisions at the CERN Super Proton Synchrotron (SPS). This procedure allows to unfold the moments of the unknown multiplicity distributions of protons (p), kaons (K), pions (π\pi) and electrons (e). Using these moments the excitation function of the fluctuation measure νdyn\nu_{\text{\text{dyn}}}[A,B] was measured, with A and B denoting different particle types. The obtained energy dependence of νdyn\nu_{\text{dyn}} agrees with previously published NA49 results on the related measure σdyn\sigma_{\text{dyn}}. Moreover, νdyn\nu_{\text{dyn}} was found to depend on the phase space coverage for [K,p] and [K,π\pi] pairs. This feature most likely explains the reported differences between measurements of NA49 and those of STAR in central Au+Au collisions
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