3,217 research outputs found
Place branding and the representation of people at work: Exploring issues of tourism imagery and migrant labour in the Republic of Ireland
This paper addresses destination brand image in tourism marketing and assesses the contribution of tourism ' s workforce to such image and branding, considering the role that employees play in visitors ' interpretation of their experience of destination and place. The focus of this paper, therefore, is on the role of people in the image of place and the potential for contradiction in imagery as the people who inhabit and work within a place change over time. At the same time, both those who promote a destination and those consuming the place as visitors may well have expectations that are fixed in imagery that does not accord with that held within the wider community. The location of this paper is Ireland where the traditional promotion of the tourism brand has given a core role to images of people and the friendliness of the hospitality of Irish people, represented by largely homogeneous images. Recent growth in the ' Celtic tiger ' economy has induced unprecedented and large-scale migration from countries across the globe to Ireland, particularly into the tourism sector. This paper raises questions with regard to the branding of Ireland as a tourist destination in the light of major changes within the demography and ethnicity of its tourism workforce
People's perceptions and classifications of sounds heard in urban parks : semantics, affect and restoration
Sounds have been broadly categorized by researchers into ‘human’, ‘nature’ and
‘mechanical’. It is less clear if the general public define and classify sounds in the same
way and which factors influence their classification process. Establishing people’s
classification and impression of urban park sounds helps identify their perception and
experience of urban parks. This in turn aides the process of defining parks with reference to
soundscapes, to produce an appreciated and potentially restorative place. This study
involved urban park sounds, identified by park users, being presented in card sorts and
survey items. Participants sorted the sounds into similar groups, in reference to a visited
park. The terminology, factors involved and classification of the sounds was assessed using
multidimensional scaling. Triangulation of the results suggests affect is a key factor in
people’s classification process. Participants’ grouped sounds were labelled by affective
terms more often than their perceived physical properties. Affective evaluations of each
sound produced a similar classification structure as the card sort results. People’s
classification structure also varied depending on how restorative they found their urban
park. Furthermore schematic recollections played a part with many sounds being
‘expected’. Overall similarities and differences with ‘human’, ‘nature’ and ‘mechanical’
classifications were observed
Breather turbulence versus soliton turbulence: Rogue waves, probability density functions, and spectral features
10 págs.; 12 figs.Turbulence in integrable systems exhibits a noticeable scientific advantage: it can be expressed in terms of the nonlinear modes of these systems. Whether the majority of the excitations in the system are breathers or solitons defines the properties of the turbulent state. In the two extreme cases we can call such states >breather turbulence> or >soliton turbulence.> The number of rogue waves, the probability density functions of the chaotic wave fields, and their physical spectra are all specific for each of these two situations. Understanding these extreme cases also helps in studies of mixed turbulent states when the wave field contains both solitons and breathers, thus revealing intermediate characteristics. ©2016 American Physical SocietyThe authors acknowledge the support from the Volkswagen
Stiftung. The work of JMSC was also supported by MINECO
under Contract No. TEC2015-71127-C2-1-R, and by C.A.M.
under Contract No. S2013/MIT-2790. N.D. and N.A. acknowledge
support of the Australian Research Council (Discovery
Project No. DP140100265).Peer Reviewe
Rogue wave spectra of the Sasa–Satsuma equation
We analyze the rogue wave spectra of the Sasa–Satsuma equation and their appearance in the spectra of chaotic wave fields produced through modulation instability. Chaotic wave fields occasionally produce high peaks that result in a wide triangular spectrum, which could be used for rogue wave detection.The authors acknowledge the support from the Volkswagen
Stiftung. N. D. and N. A. acknowledge the support of the Australian
Research Council (Discovery Project DP140100265). N. A. is a recipient
of the Alexander von Humboldt Award (Germany). The work
of JMSC is supported by the MINECO under contracts FIS2009-
09895 and TEC2012-37958-C02-02, and by C.A.M. under contract
S2013/MIT-2790
Instant Two-Body Equation in Breit Frame
A quasipotential formalism for elastic scattering from relativistic bound
states is based on applying an instant constraint to both initial and final
states in the Breit frame. This formalism is advantageous for the analysis of
electromagnetic interactions because current conservation and four momentum
conservation are realized within a three-dimensional formalism. Wave functions
are required in a frame where the total momentum is nonzero, which means that
the usual partial wave analysis is inapplicable. In this work, the
three-dimensional equation is solved numerically, taking into account the
relevant symmetries. A dynamical boost of the interaction also is needed for
the instant formalism, which in general requires that the boosted interaction
be defined as the solution of a four-dimensional equation. For the case of a
scalar separable interaction, this equation is solved and the Lorentz
invariance of the three-dimensional formulation using the boosted interaction
is verified. For more realistic interactions, a simple approximation is used to
characterize the boost of the interaction.Comment: 20 pages in revtex 3, 3 figures. Fixed reform/tex errors
Cavitation-induced ignition of cryogenic hydrogen-oxygen fluids
The Challenger disaster and purposeful experiments with liquid hydrogen (H2)
and oxygen (Ox) tanks demonstrated that cryogenic H2/Ox fluids always
self-ignite in the process of their mixing. Here we propose a
cavitation-induced self-ignition mechanism that may be realized under these
conditions. In one possible scenario, self-ignition is caused by the strong
shock waves generated by the collapse of pure Ox vapor bubble near the surface
of the Ox liquid that may initiate detonation of the gaseous H2/Ox mixture
adjacent to the gas-liquid interface. This effect is further enhanced by H2/Ox
combustion inside the collapsing bubble in the presence of admixed H2 gas
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