212 research outputs found
Clusters and Innovation in Ecotourism Development
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
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
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
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
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
Voltage-Gated Ion Channels are Involved in the Signaling Pathway of Differentiating Chondrocytes
Signature of QCD critical point: Anomalous transverse velocity dependence of antiproton-proton ratio
We formulate the QCD critical point focusing effect on transverse velocity
() dependence of antiproton to proton () 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 dependence of ratio for three gedanken
focused isentropic trajectories with different focusing degree on QCD phase
diagram. Finally, we obtained an observable anomaly in dependence
of 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
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 /mm 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
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
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 () and electrons (e). Using these moments the excitation function of
the fluctuation measure [A,B] was measured, with A and
B denoting different particle types. The obtained energy dependence of
agrees with previously published NA49 results on the related
measure . Moreover, was found to depend
on the phase space coverage for [K,p] and [K,] 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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