3,641 research outputs found
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Reflecting on the 'international group working experience': a study of two MBA programmes
This study explores students' experiences of group working in an internationalising MBA context using the research perspectives of postcolonialism (Spivak 1993, Prasad 2003) and critical management education (Reynolds 1997, 1999, Currie and Knights 2003). Data are drawn from interviews with 30 full-time MBA students at two leading UK business schools. Students' perceived gains from the international group-working experience and areas of concern, such as practices of exclusion and domination that occur in the group-working process and a reluctance to talk about and reflect on their group-work experiences, are identified. By comparing international group-working experiences at the two case-study institutions helpful practices concerning organisation of group-work and induction are identified. The paper considers ways in which group work could be made more inclusive and how students can make the most of being in an international environment. Recommendations are made for future course design, including more induction focusing on modes of participation and cultural differences, specific induction to group working including the examination of language and behaviours and the use of critical dialogue and debriefing in making sense of the experience. The paper concludes that assumptions around the benefits of group working need re-visiting within the international context and training is needed of students and staff alike on how to make group work a more beneficial and enjoyable experience for all concerned
A Correlation Between the Eclipse Depths of Kepler Gas Giant Candidates and the Metallicities of their Parent Stars
Previous studies of the interior structure of transiting exoplanets have
shown that the heavy element content of gas giants increases with host star
metallicity. Since metal-poor planets are less dense and have larger radii than
metal-rich planets of the same mass, one might expect that metal-poor stars
host a higher proportion of gas giants with large radii than metal-rich stars.
Here I present evidence for a negative correlation at the 2.3-sigma level
between eclipse depth and stellar metallicity in the Kepler gas giant
candidates. Based on Kendall's tau statistics, the probability that eclipse
depth depends on star metallicity is 0.981. The correlation is consistent with
planets orbiting low-metallicity stars being, on average, larger in comparison
with their host stars than planets orbiting metal-rich stars. Furthermore,
since metal-rich stars have smaller radii than metal-poor stars of the same
mass and age, a uniform population of planets should show a rise in median
eclipse depth with [M/H]. The fact that I find the opposite trend indicates
that substantial changes in gas giant interior structure must accompany
increasing [M/H]. I investigate whether the known scarcity of giant planets
orbiting low-mass stars could masquerade as an eclipse depth-metallicity
correlation, given the degeneracy between metallicity and temperature for cool
stars in the Kepler Input Catalog. While the eclise depth-metallicity
correlation is not yet on firm statistical footing and will require
spectroscopic [Fe/H] measurements for validation, it is an intriguing window
into how the interior structure of planets and even the planet formation
mechanism may be changing with Galactic chemical evolution.Comment: Accepted for publication in the Astrophysical Journal. 13 pages
total, including 6 text pages, 5 figures and 2 table
Nursing education and regulation: international profiles and perspectives
This review of nurse education and regulation in selected OECD countries forms part of ongoing work on contemporary nursing careers and working lives, based at the National Nursing Research Unit, King’s College London. The review was commissioned by the Department of Health to inform their work in considering the UK’s position in relation to the Bologna declaration and changes that may emanate from the implementation of Modernising Nursing Careers (DH 2006). While much of the information in the review was obtained from publications and websites, we also contacted key personnel in most of the countries included for an up-to-date review of developments in their country and would like to thank them all for providing this information
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Brexiting CMS
Brexit could be seen as the largest popular rebellion against the power elites in the UK modern history. It is also part of a larger phenomenon – the resurgence of nationalism and right-wing politics within Europe, the United States and beyond. Bringing in its wake the worrying manifestations of racism, xenophobia and anti-intellectualism, Brexit and its consequences should be a core concern for Critical Management Studies academics in helping to shape post-Brexit societies, organisations and workplaces, and in fighting and challenging the sinister forces that permeate them. In this paper, we consider how CMS can rise to the challenges and possibilities of this ‘phenomenon-in-the-making’. We reflect on the intellectual tools available to CMS researchers and the ways in which they may be suited to this task. In particular, we explore how the key positions of anti-performativity, critical performativity, political performativity, and public CMS can be used as a starting point for thinking about the potential relevance of CMS in Brexit and post-Brexit contexts. Our intention is to encourage CMS-ers to contribute positively to the post-Brexit world in academic as well as personal capacities. For this, we argue that a new public CMS is needed, which would 1) be guided by the premise that we have no greater and no lesser right than anyone else to shape the world, 2) entail as much critical reflexivity in relation to our unintended performativities as our intended ones, and 3) be underpinned by marginalism as a critical political project
Detection of Low Mass-ratio Stellar Binary Systems
O- and B-type stars are often found in binary systems, but the low binary
mass-ratio regime is relatively unexplored due to observational difficulties.
Binary systems with low mass-ratios may have formed through fragmentation of
the circumstellar disk rather than molecular cloud core fragmen- tation. We
describe a new technique sensitive to G- and K-type companions to early B
stars, a mass-ratio of roughly 0.1, using high-resolution, high signal-to-noise
spectra. We apply this technique to a sample of archived VLT/CRIRES
observations of nearby B-stars in the CO bandhead near 2300 nm. While there are
no unambiguous binary detections in our sample, we identify HIP 92855 and HIP
26713 as binary candidates warranting follow-up observations. We use our
non-detections to determine upper limits to the frequency of FGK stars orbiting
early B-type primaries.Comment: 13 pages, 7 figures Accepted to the Astrophysical Journa
Photophoresis boosts giant planet formation
In the core accretion model of giant planet formation, a solid protoplanetary
core begins to accrete gas directly from the nebula when its mass reaches about
5 earth masses. The protoplanet has at most a few million years to reach
runaway gas accretion, as young stars lose their gas disks after 10 million
years at the latest. Yet gas accretion also brings small dust grains entrained
in the gas into the planetary atmosphere. Dust accretion creates an optically
thick protoplanetary atmosphere that cannot efficiently radiate away the
kinetic energy deposited by incoming planetesimals. A dust-rich atmosphere
severely slows down atmospheric cooling, contraction, and inflow of new gas, in
contradiction to the observed timescales of planet formation. Here we show that
photophoresis is a strong mechanism for pushing dust out of the planetary
atmosphere due to the momentum exchange between gas and dust grains. The
thermal radiation from the heated inner atmosphere and core is sufficient to
levitate dust grains and to push them outward. Photophoresis can significantly
accelerate the formation of giant planets.Comment: accepted in Astronomy and Astrophysics, 201
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Multiple Perspectives on the Challenges for Knowledge Transfer between Higher Education Institutions and Industry
YesKnowledge transfer (KT) has been identified as an essential element of innovation, driving competitive advantage in increasingly knowledge-driven economies and as a result recent UK Government reports have sought to increase awareness of the importance of KT within higher education institutions (HEIs). There is therefore a need for relevant empirical research that examines, from multiple perspectives, how KT policy is translated into practice within HEI contexts. This paper responds to this need by presenting an in-depth qualitative case study based on over 50 semi-structured interviews with university-based academic and non-academic participants and representatives of small firms involved in InfoLab21, a high profile `centre of excellence¿ for research, development and commercialisation of ICT in Northwest England, UK. The study considers what the key practices of KT are and what promotes and/or hinders their development. Four overarching themes are identified: i) motivation and reward mechanisms; ii) process management and evaluation; iii) clustering and brokerage; and iv) trust and bridge building. Each theme is considered from multiple perspectives and areas for further research are suggested
Hot Stars With Cool Companions
Young intermediate-mass stars have become high-priority targets for
direct-imaging planet searches following the recent discoveries of planets
orbiting e.g. HR 8799 and Beta Pictoris. Close stellar companions to these
stars can affect the formation and orbital evolution of any planets, and so a
census of the multiplicity properties of nearby intermediate mass stars is
needed. Additionally, the multiplicity can help constrain the important binary
star formation physics. We report initial results from a spectroscopic survey
of 400 nearby A- and B-type stars. We search for companions by
cross-correlating high resolution and high signal-to-noise ratio echelle
spectra of the targets stars against model spectra for F- to M-type stars. We
have so far found 18 new candidate companions, and have detected the spectral
lines of the secondary in 4 known spectroscopic binary systems. We present the
distribution of mass-ratios for close companions, and find that it differs from
the distribution for wide ( AU) intermediate-mass binaries, which may
indicate a different formation mechanism for the two populations.Comment: Submitted as part of the 18th Cambridge Workshop on Cool Stars,
Stellar Systems, and the Sun Proceedings of Lowell Observatory (9-13 June
2014
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