1,022 research outputs found
Grounded: characterising the market exit of European low cost airlines
The aim of this paper is to undertake a comprehensive study of LCC market entry
and exit in Europe between 1992 and 2012. In the 20 year period between 1992 and
2012, 43 low cost carriers (LCCs) have taken advantage of the progressive
liberalisation of the European aviation market and commenced scheduled flight
operations within the continent. Of these 43, only 10 remain operational, a failure
rate of 77%. This paper contributes to extant literature on LCCs by examining the
market entry, business practices, operating longevity and fate of failed operators to
characterise European LCC market exit. Drawing on the findings of a detailed
continental-wide study, the paper identifies that an airline’s start-up date, the nature
and size of its operation and the size and composition of its aircraft fleet are key
factors which influence LCC success and failure. The implications for both European
and emerging LCC markets are discussed
The importance of confronting a colonial, patriarchal and racist past in addressing post-apartheid sexual violence
This commentary uses Judge Willem van der Merwe’s rescripting of Rudyard Kipling’s ‘If’ poem during the Jacob Zuma rape trial as a starting point to argue for the importance of understanding the ways in which spectres of a colonial, masculinist and racist past continue to haunt the present in South Africa. While Zuma invoked Zulu culture and his duties as a Zulu patriarch in his defence in the trial, this very idea of ‘Zuluness’ is a product of the same patriarchal racialism disseminated by Kipling and British colonialism. In order to address high levels of sexual violence in contemporary South Africa, the state needs to acknowledge the ways in which a colonial, white supremacist and patriarchal past has shaped responses to sexual violence. It also needs to redress problems of social and economic inequality that exist in South Africa as
hangovers from this country’s colonial and apartheid-era past.Department of HE and Training approved lis
Coronal winds powered by radiative driving
A two-component phenomenological model developed originally for zeta Puppis
is revised in order to model the outflows of late-type O dwarfs that exhibit
the weak-wind phenomenon. With the theory's standard parameters for a generic
weak-wind star, the ambient gas is heated to coronal temperatures ~ 3 x 10^{6}K
at radii > 1.4 R, with cool radiativly-driven gas being then confined to dense
clumps with filling factor ~ 0.02. Radiative driving ceases at radius ~ 2.1R
when the clumps are finally destroyed by heat conduction from the coronal gas.
Thereafter, the outflow is a pure coronal wind, which cools and decelerates
reaching infinity with terminal velocity ~ 980$ km/ s.Comment: 10 pages, 4 figure
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Diversity and Security in UK Electricity Generation: The Influence of Low Carbon Objectives
We explore the relationship between low carbon objectives and the strategic security of electricity in the context of the UK Electricity System. We consider diversity of fuel source mix to represent one dimension of security - robustness against interruptions of any one source - and apply two different diversity indices to the range of electricity system scenarios produced by the UK government and independent researchers. Using data on wind generation we also consider whether a second dimension of security - the reliability of generation availability - is compromised by intermittency of renewable generation. Our results show that low carbon objectives are uniformly associated with greater long-term diversity in UK electricity. We discuss reasons for this result, explore sensitivities, and briefly discuss possible policy instruments associated with diversity and their limitations
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Pupil changes linked to eyewitness memory strength in police lineups
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Unintended trajectories: liberalization and the geographies of private business flight
The global commercial aviation industry has undergone significant regulatory reform during the last 30
years. This paper explores something of the relationship between air transport liberalization and the
growth of private business aviation and suggests that the sector’s development is largely an unintended
consequence of the increasingly deregulated operating environment in that it has developed to overcome
some of liberalization’s negative impacts, including delays, congestion, and perceptions of poor customer
service. We argue that liberalization has created innovative market opportunities for private business
aviation and illustrate how the sector’s operating models are facilitating new, as yet largely undocumented,
forms of aerial mobility. The paper examines: the advantages of private business aviation over
scheduled services; business strategies in the sector, especially the idea of fractional jets; the impact of
new technologies, particularly the Very Light Jet (VLJ); and, finally, employs Europe as an example of the
spatialities of private business aviation
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