599 research outputs found
Exploring a developing tourism industry: A resource-based view approach.
This exploratory study examines dimensions related to tourism development in the case of Uruguay. Internal and external analyses were conducted to identify key resources to maximise opportunities and minimise threats to the countryâs tourism development. The study, which adopts the resource-based view of the firm, is based on the perspectives of key tourism stakeholders. Unstructured, face-to-face interviews were conducted with eight key informants, three representing government institutions, three private, and two public-private. The interviews revealed opportunities in various fronts, primarily consolidating and expanding international markets, and developing additional offerings, including convention/event and heritage tourism to minimise the effects of seasonality. Strong dependence on neighbouring markets, marginal airline connectivity and knowledge of Uruguay internationally were main perceived barriers to further development. The value of employing the resource-based framework in guiding understanding of the themes under investigation was confirmed. Implications emerging from the findings are discussed, and future research directions suggested
On Kaluza's sign criterion for reciprocal power series
T. Kaluza has given a criterion for the signs of the power series of a
function that is the reciprocal of another power series. In this note the
sharpness of this condition is explored and various examples in terms of the
Gaussian hypergeometric series are given. A criterion for the monotonicity of
the quotient of two power series due to M. Biernacki and J. Krzy\.z is applied.Comment: 13 page
A modular structural operational semantics for delimited continuations
It has been an open question as to whether the Modular Structural Operational Semantics framework can express the dynamic semantics of call/cc. This paper shows that it can, and furthermore, demonstrates that it can express the more general delimited control operators control and shift
First-principles calculation of the thermal properties of silver
The thermal properties of silver are calculated within the quasi-harmonic
approximation, by using phonon dispersions from density-functional perturbation
theory, and the pseudopotential plane-wave method. The resulting free energy
provides predictions for the temperature dependence of various quantities such
as the equilibrium lattice parameter, the bulk modulus, and the heat capacity.
Our results for the thermal properties are in good agreement with available
experimental data in a wide range of temperatures. As a by-product, we
calculate phonon frequency and Grueneisen parameter dispersion curves which are
also in good agreement with experiment.Comment: 9 pages, 8 figures, submitted to Phys. Rev. B April 30, 1998). Other
related publications can be found at
http://www.rz-berlin.mpg.de/th/paper.htm
Reconstructing âthe Alcoholicâ: Recovering from Alcohol Addiction and the Stigma this Entails
Public perception of alcohol addiction is frequently negative, whilst an important part of recovery is the construction of a positive sense of self. In order to explore how this might be achieved, we investigated how those who self-identify as in recovery from alcohol problems view themselves and their difficulties with alcohol and how they make sense of othersâ responses to their addiction. Semi-structured interviews with six individuals who had been in recovery between 5 and 35 years and in contact with Alcoholics Anonymous were analysed using Interpretative Phenomenological Analysis. The participants were acutely aware of stigmatising images of âalcoholicsâ and described having struggled with a considerable dilemma in accepting this identity themselves. However, to some extent they were able to resist stigma by conceiving of an âaware alcoholic selfâ which was divorced from their previously unaware self and formed the basis for a new more knowing and valued identity
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How to build your own raised-bed cloche
âClocheâ (pronounced klĆsh) is French for a bell jar or dish that is set over delicate plants to protect them from cold weather. The definition has expanded to include many types of portable and permanent structures that shelter plants from wind and cold, serving as mini-green houses. They have become popular in the coastal Mediterranean climate of the Pacific Northwest, where long, cool springs and cooler summers mean lower temperatures for growing crops and vegetables.Published August 2008. Reviewed July 2013. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo
Ab initio study of the volume dependence of dynamical and thermodynamical properties of silicon
Motivated by the negative thermal expansion observed for silicon between 20 K
and 120 K, we present first an ab initio study of the volume dependence of
interatomic force constants, phonon frequencies of TA(X) and TA(L) modes, and
of the associated mode Gruneisen parameters. The influence of successive
nearest neighbors shells is analysed. Analytical formulas, taking into account
interactions up to second nearest neighbors, are developped for phonon
frequencies of TA(X) and TA(L) modes and the corresponding mode Gruneisen
parameters. We also analyze the volume and pressure dependence of various
thermodynamic properties (specific heat, bulk modulus, thermal expansion), and
point out the effect of the negative mode Gruneisen parameters of the acoustic
branches on these properties. Finally, we present the evolution of the mean
square atomic displacement and of the atomic temperature factor with the
temperature for different volumes, for which the anomalous effects are even
greater.Comment: 24 pages, Revtex 3.0, 11 figures, accepted for publication in Phys.
Rev.
Temperature dependent surface relaxations of Ag(111)
The temperature dependent surface relaxation of Ag(111) is calculated by
density-functional theory. At a given temperature, the equilibrium geometry is
determined by minimizing the Helmholtz free energy within the quasiharmonic
approximation. To this end, phonon dispersions all over the Brillouin zone are
determined from density-functional perturbation theory. We find that the
top-layer relaxation of Ag(111) changes from an inward contraction (-0.8 %) to
an outward expansion (+6.3%) as the temperature increases from T=0 K to 1150 K,
in agreement with experimental findings. Also the calculated surface phonon
dispersion curves at room temperature are in good agreement with helium
scattering measurements. The mechanism driving this surface expansion is
analyzed.Comment: 6 pages, 7 figures, submitted to Phys. Rev. B (May 1998). Other
related publications can be found at
http://www.rz-berlin.mpg.de/th/paper.htm
Surface relaxation and ferromagnetism of Rh(001)
The significant discrepancy between first-principles calculations and
experimental analyses for the relaxation of the (001) surface of rhodium has
been a puzzle for some years. In this paper we present density functional
theory calculations using the local-density approximation and the generalized
gradient approximation of the exchange-correlation functional. We investigate
the thermal expansion of the surface and the possibility of surface magnetism.
The results throw light on several, hitherto overlooked, aspects of metal
surfaces. We find, that, when the free energy is considered, density-functional
theory provides results in good agreement with experiments.Comment: 6 pages, 4 figures, submitted to Phys. Rev. Lett. (April 28, 1996
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