131 research outputs found
Разработка модели эффективного управления винного туризма
Розглянуто перспективи розвитку винного туризму в АР Крим на базі створення спеціалізованих підприємств у сфері дегустаційного бізнесу і дана оцінка їх економічної ефективності.Рассмотрены перспективы развития винного туризма в АР Крым на базе создания специализированных предприятий в сфере дегустационного бизнеса и дана оценка их экономической эффективности.Outlook of development of testing tourism in the Crimea is studied. The possibility of creating enterprises in the sphere of testing tourism and estimate of economic effectiveness is described
Assessment of coastal flooding and associated hydrodynamic processes on the south-eastern coast of Mexico, during Central American cold surge events
Coastal flooding in the northern
Yucatán Peninsula is mainly associated with storm surge events triggered by
high-pressure cold front systems. This study evaluates the hydrodynamic
processes of the Chelem lagoon, Mexico and the flooding threat from cold
fronts for the neighbouring town of Progreso. A 30-year water-level hindcast
(excluding wave set-up) was performed because of the lack of long-term tide
gauge records. In order to assess the relative contribution from wave set-up
and residual and astronomical tides to total flooding, the two worst storm
scenarios in terms of maximum residual tide (Event A) and maximum water level
(Event B) were simulated. Numerical results suggest that during Event A the
wave set-up contribution reaches 0.35 at the coast and 0.17 m inside the
lagoon, and these values are smaller for Event B (0.30 and 0.14 m,
respectively). Results of the effect of the tidal phase on wave set-up and
residual sea level show that (i) the wave set-up contribution increases
during ebb tide and decreases during flood tide at the Chelem inlet, (ii) the
residual tide is larger (smaller) near low (high) or receding (rising) tide,
and (iii) maximum flooding occurs when the storm peak coincides with rising
or high tide. The numerical results confirm the important role of wave set-up
on the assessment of coastal flooding in micro-tidal coastal environments
Wave-induced extreme water levels in the Puerto Morelos fringing reef lagoon
Wave-induced extreme water levels in the Puerto Morelos fringing reef lagoon are investigated by means of a phase-resolving non-hydrostatic wave model (SWASH). This model solves the nonlinear shallow water equations including non-hydrostatic pressure. The one-dimensional version of the model is implemented in order to investigate wave transformation in fringing reefs. Firstly, the numerical model is validated with (i) laboratory experiments conducted on a physical model (Demirbilek et al., 2007)and (ii) field observations (Coronado et al., 2007). Numerical results show good agreement with both experimental and field data. The comparison against the physical model results, for energetic wave conditions, indicates that high- and low-frequency wave transformation is well reproduced. Moreover, extreme water-level conditions measured during the passage of Hurricane Ivan in Puerto Morelos are also estimated by the numerical tool. Subsequently, the model is implemented at different along-reef locations in Puerto Morelos. Extreme water levels, wave-induced setup, and infragravity wave energy are estimated inside the reef lagoon for different storm wave conditions (<i>H</i><sub>s</sub> >2 m). The numerical results revealed a strong correlation between the offshore sea-swell wave energy and the setup. In contrast, infragravity waves are shown to be the result of a more complex pattern which heavily relies on the reef geometry. Indeed, the southern end of the reef lagoon provides evidence of resonance excitation, suggesting that the reef barrier may act as either a natural flood protection morphological feature, or as an inundation hazard enhancer depending on the incident wave conditions
Evidence of a dibaryon spectrum in coherent π0π0d photoproduction at forward deuteron angles
The coherent reaction, was studied with the BGOOD experiment at ELSA from threshold to a centre-of-mass energy of 2850 MeV. A full kinematic reconstruction was made, with final state deuterons identified in the forward spectrometer and decays in the central BGO Rugby Ball. The strength of the differential cross section exceeds what can be described by models of coherent photoproduction and instead supports the three isoscalar dibaryon candidates reported by the ELPH collaboration at 2.38, 2.47 and 2.63 GeV/c2. A low mass enhancement in the invariant mass is also observed at the
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centre-of-mass energy which is consistent with the ABC effect. At higher centre-of-mass energies, a narrow peak in the invariant mass at 2114 MeV/c2 with a width of 20 MeV/c2 supports a sequential two-dibaryon decay mechanism
Photoproduction of K+ Δ(1405) → K+ π0 Σ0 extending to forward angles and low momentum transfer
K+ Lambda (1405) photoproduction has been studied at the BGOOD experiment via the all neutral decay, Lambda(1405)-> Sigma0 Pi0. The unique BGOOD experimental setup allows both the cross section and
invariant mass Lamba(1405) distribution (line shape) to be measured over a broad K+ polar angle range, extending to extreme forward K+ angles unattainable at previous experiments.
Evidence is provided for the role of a triangle singularity driven by the N*(2030)⁎
resonance, which appears to contribute significantly to K+Lambda(1405)
photoproduction. This is observed in the integrated cross section which was determined with unprecedented energy resolution and supported by the angular distributions. The measured line shape is also in agreement with the previous results of CLAS and ANKE, and is consistent with two poles derived in χPT based models
First Results for the Beam Commissioning of the CERN Multi-Turn Extraction
The Multi-Turn Extraction (MTE), a new type of extraction based on beam trapping inside stable islands in horizontal phase space, has been commissioned during the 2008 run of the CERN Proton Synchrotron. Both singleand multi-bunch beams with a total intensity up to 1.4 1013 protons have been extracted with efficiencies up to 98%. Furthermore, injection tests in the CERN Super Proton Synchrotron were performed, with the beam then accelerated and extracted to produce neutrinos for the CERN Neutrino-to-Gran Sasso experiments. The results of the extensive measurement campaign are presented and discussed in detail
Measurement of the γ n → K0 0 differential cross section over the K∗ threshold
The differential cross section for the quasi-free photoproduction reaction gamma(n)-> K-0 Sigma(0) was measured at BGOOD at ELSA from threshold to a centre-of-mass energy of 2400 MeV. Close to threshold the results are consistent with existing data and are in agreement with partial wave analysis solutions over the full measured energy range, with a large coupling to the Delta(1900)1/2(-) evident. This is the first dataset covering the K* threshold region, where there are model predictions of dynamically generated vector meson-baryon resonance contributions
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