Hazel Andrews, Les Roberts and Tom Selwyn
This paper aims to provoke discussion and reflection on the role of the erotic in the cultivation of spaces of hospitality, and to provide a theoretical consideration of the…
Abstract
Purpose
This paper aims to provoke discussion and reflection on the role of the erotic in the cultivation of spaces of hospitality, and to provide a theoretical consideration of the structural similarities of hospitality and eroticism.
Design/methodology/approach
With reference to classical studies as well as debates in the social science literature, the paper starts by examining some of the theoretical and philosophical underpinnings to hospitality and eroticism. It then develops this analysis by considering examples drawn from ethnographic studies of “traditional” hospitality settings as well as of commercial hospitality environments of charter tourism.
Findings
The main outcome of the discussion is to demonstrate the structural relations between hospitality and eroticism. By situating the analysis within a broad theoretical and ethnographic context, it is shown that the erotic has historically functioned as a socially‐binding and communicative mode of social intercourse that, while undermined by the demands of a market‐based culture of commercial hospitality, is also able to flourish within these same adverse conditions.
Research limitations/implications
This paper invites further research into the connections between hospitality and eroticism in settings similar to and different from those described in the paper. A fuller ethnographic study of the relationship between the two is needed, as well as an exploration of more theoretical perspectives on hospitality drawn from the social science literature.
Practical implications
By highlighting the socially binding role of eroticism in the structuring of host‐guest relations, the paper draws on and contributes to a broader politics of love and sensuality that will inform critical reflections on commercial and market‐driven hospitality practices.
Originality/value
This paper provides an original insight into the interrelationship between hospitality and eroticism. It further illuminates previous writings on both subjects but particularly that of eroticism and is supported by empirical data. It is of particular interest to those studying hospitality from a social science perspective.
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The purpose of this paper is to present contrasting approaches to the descriptive case study of tourism to the buried city of Plymouth, Montserrat, an example of the marketing and…
Abstract
Purpose
The purpose of this paper is to present contrasting approaches to the descriptive case study of tourism to the buried city of Plymouth, Montserrat, an example of the marketing and burying – the supply and demand – of apocalyptic dark tourism on the island.
Design/methodology/approach
A case study mixed-methods methodology is adopted, and findings are derived from tour guiding fieldwork, guide and tourist interviews, and an analysis of travel writing and tourism marketing campaigns.
Findings
Dark tourism is viewed as a contentious and problematic concept: it attracts and repels tourism to the former capital Plymouth, Montserrat. After 20 years of the volcano crisis, the islanders, government and Tourist Board are commemorating resilience living with the volcano and regeneration in a disaster scenario. Marketing and consumption approaches to dark tourism elucidate different facets to the case study of “the buried city” of Plymouth, Montserrat, and the Montserrat Springs Hotel overlooking Plymouth. The disjunct between these two types of approach to dark tourism, as well as the different criteria attached to working definitions of dark tourism – and the range of interests in apocalyptic dark tourism into the city and its surrounds – show some of the problems and limitations with theoretical and scalar discussions on dark tourism.
Research limitations/implications
The paper’s implications are that both supply and demand approaches to dark tourism are needed to fully understand a dark tourism destination and to reconcile the disjunct between these two approaches and the perspectives of tourist industry and tourism users.
Originality/value
This is a descriptive dark tourism case study of a former capital city examined from both supply and demand perspectives. It introduces the apocalyptic to dark tourism destination analysis.
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La complexité de l'analyse et du traitement des données relatives à la création et aux conséquences d'un nouveau mega projet est souvent assez grande. La détermination des effets…
Abstract
La complexité de l'analyse et du traitement des données relatives à la création et aux conséquences d'un nouveau mega projet est souvent assez grande. La détermination des effets de l'implantation d'un projet touristique d'envergure, résultant d'une nou‐velle demande exogène telle les dépenses touri‐stiques, touchent, à titre d'exemple, à la création d'emplois et aux investissements nouveaux requis.
The bibliography of Cook's voyages is both lengthy and complicated, and, in spite of their far‐reaching importance, their historical and geographical significance, and their…
Abstract
The bibliography of Cook's voyages is both lengthy and complicated, and, in spite of their far‐reaching importance, their historical and geographical significance, and their considerable literary influence, it has never yet been attempted in its entirety. ‘L'immortel Cook’ was honoured almost as much in France as he was in England, but no satisfactory account exists of the French translations of his works. Sir Maurice Holmes's Introduction to the bibliography of Captain James Cook, R.N., London, Edwards, 1936, is excellent for the original editions, but does not attempt to include translations. Of great value, too, is the Bibliography of Captain James Cook, R.N., F.R.S., circumnavigator, published in 1928 by the Public Library of New South Wales. This is the catalogue of what must have been a remarkably fine exhibition to celebrate the bicentenary of Cook's birth, but it does not, of course, pretend to include items which were not available for display. The only other bibliography specifically devoted to Cook is the one by James Jackson prepared for the centenary of Captain Cook's death and published in the Bulletin de la Société de Géographie, 1879. This must be used with great caution. It has the appearance of having been compiled from entries sent in by various owners and put together without sufficient examination. At all events, while it naturally contains a very large number of French editions, many of them appear twice or even three times in slightly different disguises.
Hongbin Liu, Xinrong Su and Xin Yuan
Adopting large eddy simulation (LES) to simulate the complex flow in turbomachinery is appropriate to overcome the limitation of current Reynolds-Averaged Navier–Stokes modelling…
Abstract
Purpose
Adopting large eddy simulation (LES) to simulate the complex flow in turbomachinery is appropriate to overcome the limitation of current Reynolds-Averaged Navier–Stokes modelling and it provides a deeper understanding of the complicated transitional and turbulent flow mechanism; however, the large computational cost limits its application in high Reynolds number flow. This study aims to develop a three-dimensional GPU-enabled parallel-unstructured solver to speed up the high-fidelity LES simulation.
Design/methodology/approach
Compared to the central processing units (CPUs), graphics processing units (GPUs) can provide higher computational speed. This work aims to develop a three-dimensional GPU-enabled parallel-unstructured solver to speed up the high-fidelity LES simulation. A set of low-dissipation schemes designed for unstructured mesh is implemented with compute unified device architecture programming model. Several key parameters affecting the performance of the GPU code are discussed and further speed-up can be obtained by analysing the underlying finite volume-based numerical scheme.
Findings
The results show that an acceleration ratio of approximately 84 (on a single GPU) for double precision algorithm can be achieved with this unstructured GPU code. The transitional flow inside a compressor is simulated and the computational efficiency has been improved greatly. The transition process is discussed and the role of K-H instability playing in the transition mechanism is verified.
Practical/implications
The speed-up gained from GPU-enabled solver reaches 84 compared to original code running on CPU and the vast speed-up enables the fast-turnaround high-fidelity LES simulation.
Originality/value
The GPU-enabled flow solver is implemented and optimized according to the feature of finite volume scheme. The solving time is reduced remarkably and the detail structures including vortices are captured.
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The findings of the Steering Group on Food Freshness in relation to the compulsory date marking of food contained in their Report, reviewed elsewhere in this issue, has brought…
Abstract
The findings of the Steering Group on Food Freshness in relation to the compulsory date marking of food contained in their Report, reviewed elsewhere in this issue, has brought within measurable distance the Regulations which were, in any case, promised for1975. The Group consider that the extension of voluntary open date marking systems will not be sufficiently rapid (or sufficiently comprehensive) to avoid the need or justify the delay in introducing legislation.
Alain Fossi and Alain DeChamplain
Safety improvement and pollutant reduction in many practical combustion systems and especially in aero-gas turbine engines require an adequate understanding of flame ignition and…
Abstract
Purpose
Safety improvement and pollutant reduction in many practical combustion systems and especially in aero-gas turbine engines require an adequate understanding of flame ignition and stabilization mechanisms. Improved software and hardware have opened up greater possibilities for translating basic knowledge and the results of experiments into better designs. The present study deals with the large eddy simulation (LES) of an ignition sequence in a conical shaped bluff-body stabilized burner involving a turbulent non-premixed flame. The purpose of this paper is to investigate the impact of spark location on ignition success. Particular attention is paid to the ease of handling of the numerical tool, the computational cost and the accuracy of the results.
Design/methodology/approach
The discrete particle ignition kernel (DPIK) model is used to capture the ignition kernel dynamics in its early stage of growth after the breakdown period. The ignition model is coupled with two combustion models based on the mixture fraction-progress variable formulation. An infinitely fast chemistry assumption is first done, and the turbulent fluctuations of the progress variable are captured with a bimodal probability density function (PDF) in the line of the Bray–Moss–Libby (BML) model. Thereafter, a finite rate chemistry assumption is considered through the flamelet-generated manifold (FGM) method. In these two assumptions, the classical beta-PDF is used to model the temporal fluctuations of the mixture fraction in the turbulent flow. To model subgrid scale stresses and residual scalars fluxes, the wall-adapting local eddy (WALE) and the eddy diffusivity models are, respectively, used under the low-Mach number assumption.
Findings
Numerical results of velocity and mixing fields, as well as the ignition sequences, are validated through a comparison with their experimental counterparts. It is found that by coupling the DPIK model with each of the two combustion models implemented in a LES-based solver, the ignition event is reasonably predicted with further improvements provided by the finite rate chemistry assumption. Finally, the spark locations most likely to lead to a complete ignition of the burner are found to be around the shear layer delimiting the central recirculation zone, owing to the presence of a mixture within flammability limits.
Research limitations/implications
Some discrepancies are found in the radial profiles of the radial velocity and consequently in those of the mixture fraction, owing to a mismatch of the radial velocity at the inlet section of the computational domain. Also, unlike FGM methods, the BML model predicts the overall ignition earlier than suggested by the experiment; this may be related to the overestimation of the reaction rate, especially in the zones such as flame holder wakes which feature high strain rate due to fuel-air mixing.
Practical implications
This work is adding a contribution for ignition modeling, which is a crucial issue in various combustion systems and especially in aircraft engines. The exclusive use of a commercial computational fluid dynamics (CFD) code widely used by combustion system manufacturers allows a direct application of this simulation approach to other configurations while keeping computing costs at an affordable level.
Originality/value
This study provides a robust and simple way to address some ignition issues in various spark ignition-based engines, namely, the optimization of engines ignition with affordable computational costs. Based on the promising results obtained in the current work, it would be relevant to extend this simulation approach to spray combustion that is required for aircraft engines because of storage volume constraints. From this standpoint, the simulation approach formulated in the present work is useful to engineers interested in optimizing the engines ignition at the design stage.
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There is no doubt about the economic importance of small‐ and medium‐sized enterprises (SMEs) in industrialised countries. The amount of research on organisational size as a…
Abstract
Purpose
There is no doubt about the economic importance of small‐ and medium‐sized enterprises (SMEs) in industrialised countries. The amount of research on organisational size as a factor of radio frequency identification (RFID) adoption, however, is as yet, minimal. This paper aims to fill that gap by first determining firm‐size specific characteristics of RFID and then using organisational inertia theory to derive the hypothesis that the size and structure of SMEs can be advantageous for the adoption of RFID.
Design/methodology/approach
This paper is based on organisational inertia theory and survey data.
Findings
A survey conducted among German enterprises already deploying RFID is used to test our hypothesis. It confirms that smaller enterprise size can make RFID adoption and exploitation of the productivity potential easier. Accordingly, it recommends that SMEs avoid adopting a wait‐and‐see position or restricting themselves to easy‐to‐conduct RFID automation applications.
Originality/value
The study provides a starting point for future research and facilitates knowledge accumulation and creation concerning the role of organisational size for RFID adoption.
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Alain Fossi, Alain DeChamplain, Benjamin Akih-Kumgeh and Jeffrey Bergthorson
This study aims to deal with the large eddy simulation (LES) of an ignition sequence and the resulting steady combustion in a swirl-stabilized liquid-fueled combustor. Particular…
Abstract
Purpose
This study aims to deal with the large eddy simulation (LES) of an ignition sequence and the resulting steady combustion in a swirl-stabilized liquid-fueled combustor. Particular attention is paid to the ease of handling the numerical tool, the accuracy of the results and the reasonable computational cost involved. The primary aim of the study is to appraise the ability of the newly developed computational fluid dynamics (CFD) methodology to retrieve the spark-based flame kernel initiation, its propagation until the full ignition of the combustion chamber, the flame stabilization and the combustion processes governing the steady combustion regime.
Design/methodology/approach
The CFD model consists of an LES-based spray module coupled to a subgrid-scale ignition model to capture the flame kernel initiation and the early stage of the flame kernel growth, and a combustion model based on the mixture fraction-progress variable formulation in the line of the flamelet generated manifold (FGM) method to retrieve the subsequent flame propagation and combustion properties. The LES-spray module is based on an Eulerian-Lagrangian approach and includes a fully two-way coupling at each time step to account for the interactions between the liquid and the gaseous phases. The Wall-Adapting Local Eddy-viscosity (WALE) model is used for the flow field while the eddy diffusivity model is used for the scalar fluxes. The fuel is liquid kerosene, injected in the form of a polydisperse spray of droplets. The spray dynamics are tracked using the Lagrangian procedure, and the phase transition of droplets is calculated using a non-equilibrium evaporation model. The oxidation mechanism of the Jet A-1 surrogate is described through a reduced reaction mechanism derived from a detailed mechanism using a species sensitivity method.
Findings
By comparing the numerical results with a set of published data for a swirl-stabilized spray flame, the proposed CFD methodology is found capable of capturing the whole spark-based ignition sequence in a liquid-fueled combustion chamber and the main flame characteristics in the steady combustion regime with reasonable computing costs.
Research limitations/implications
The proposed CFD methodology simulates the whole ignition sequence, namely, the flame kernel initiation, its propagation to fully ignite the combustion chamber, and the global flame stabilization. Due to the lack of experimental ignition data on this liquid-fueled configuration, the ability of the proposed CFD methodology to accurately predict ignition timing was not quantitatively assessed. It would, therefore, be interesting to apply this CFD methodology to other configurations that have experimental ignition data, to quantitatively assess its ability to predict the ignition timing and the flame characteristics during the ignition sequence. Such further investigations will not only provide further validation of the proposed methodology but also will potentially identify its shortfalls for better improvement.
Practical implications
This CFD methodology is developed by customizing a commercial CFD code widely used in the industry. It is, therefore, directly applicable to practical configurations, and provides not only a relatively straightforward approach to predict an ignition sequence in liquid-fueled combustion chambers but also a robust way to predict the flame characteristics in the steady combustion regime as significant improvements are noticed on the prediction of slow species.
Originality/value
The incorporation of the subgrid ignition model paired with a combustion model based on tabulated chemistry allows reducing computational costs involved in the simulation of the ignition phase. The incorporation of the FGM-based tabulated chemistry provides a drastic reduction of computing resources with reasonable accuracy. The CFD methodology is developed using the platform of a commercial CFD code widely used in the industry for relatively straightforward applicability.