830 research outputs found
Legitimacy driven change at the World Anti-Doping Agency
The effectiveness of the World Anti-Doping Agency as an international non-governmental
organisation with a mission to regulate anti-doping policy has been challenged before by
doping scandals in sport. Historically, anti-doping policy development has been primarily
reactive, determined by the need for dominant organisations to maintain power rather than to
protect athletes. The purpose of this paper is to explore reactive anti-doping policy change
from a multi-level legitimacy perspective. Using multi-level legitimacy theory and the
concept of legitimacy challenges, it is argued that reactive policy change is motivated by a
need to manage perceived organisational legitimacy. The recent exposure of systematic
doping in Russia is used as an example to support this analysis. These findings are discussed
in the context of current criticisms of anti-doping policy
Interrogating Statesâ Soft Power Strategies: A Case Study of Sports Mega-Events in Brazil and the UK
© 2015 University of Kent. Central to this article is the use of sports mega-events as part of a state's âsoft powerâ strategy. The article offers two things: first, a critique of the âsoft powerâ concept and a clearer understanding of what it refers to by drawing on the political use of sports mega-events by states; second, the article seeks to understand how and why sports mega-events are attractive to states with different political systems and at different stages of economic development. To this end a case study of an advanced capitalist state (London Olympics, 2012) and a so-called âemergingâ state (FIFA World Cup, 2014; Rio Olympics, 2016) will be undertaken in order to shed light on the role of sports events as part of soft power strategies across different categories of states
Electron and hole dynamics of InAs/GaAs quantum dot semiconductor optical amplifiers
Single-color and two-color pump-probe measurements are used to analyze carrier dynamics in InAs/GaAs quantum dot amplifiers. The study reveals that hole recovery and intradot electron relaxation occur on a picosecond time scale, while the electron capture time is on the order of 10 ps. A longer time scale of hundreds of picoseconds is associated with carrier recovery in the wetting layer, similar to that observed in quantum well semiconductor amplifiers. (c) 2007 American Institute of Physics. (DOI:10.1063/1.2771374
Targeting Mr Average: Participation, gender equity and school sport partnerships
The School Sport Partnership Programme (SSPP) is one strand of the national strategy for physical education and school sport in England, the physical education and school sport Club Links Strategy (PESSCL). The SSPP aims to make links between school physical education (PE) and out of school sports participation, and has a particular remit to raise the participation levels of several identified under-represented groups, of which girls and young women are one. National evaluations of the SSPP show that it is beginning to have positive impacts on young people's activity levels by increasing the range and provision of extra curricular activities (Office for Standards in Education (OFSTED), 2003, 2004, 2005; Loughborough Partnership, 2005, 2006). This paper contributes to the developing picture of the phased implementation of the programme by providing qualitative insights into the work of one school sport partnership with a particular focus on gender equity. The paper explores the ways in which gender equity issues have been explicitly addressed within the 'official texts' of the SSPP; how these have shifted over time and how teachers are responding to and making sense of these in their daily practice. Using participation observation, interview and questionnaire data, the paper explores how the coordinators are addressing the challenge of increasing the participation of girls and young women. The paper draws on Walby's (2000) conceptualisation of different kinds of feminist praxis to highlight the limitations of the coordinators' work. Two key themes from the data and their implications are addressed: the dominance of competitive sport practices and the PE professionals' views of targeting as a strategy for increasing the participation of under-represented groups. The paper concludes that coordinators work within an equality or difference discourse with little evidence of the transformative praxis needed for the programme to be truly inclusive. © 2008 Taylor & Francis
Convergence and divergence of elite sport policies: is there a one-size-fits-all model to develop international sporting success?
This study is based on a detailed international comparison of the elite sport policies of 15 nations as part of the SPLISS (Sports Policy Factors Leading to International Sporting Success) study. It aims to provide deeper insights into the phenomena of convergence and divergence of elite sport policies. The research uses a mixed methods approach based on document reviews, interviews with high performance directors and surveys of 3142 athletes, 1376 coaches and 246 performance directors. There appears to be no generic blueprint for achieving international sporting success. Nations that perform well in international competition show varying patterns of relative strengths and weaknesses across nine pillars, 96 critical success factors, and 750 sub-factors. While the basic raw ingredients of the recipe might be common in broad terms, the combinations in which they are mixed are diverse. Much of this diversity appears to be driven by social, cultural and political factors
Use of portable air purifiers to reduce aerosols in hospital settings and cut down the clinical backlog
SARS-CoV-2 has severely affected capacity in the NHS, and waiting lists are markedly
increasing due to downtime of up to 50 minutes between patient consultations/procedures,
to reduce the risk of infection. Ventilation accelerates this air cleaning, but retroactively
installing built-in mechanical ventilation is often cost-prohibitive. We investigated the effect
of using portable air cleaners (PAC), a low-energy and low-cost alternative, to reduce the
concentration of aerosols in typical patient consultation/procedure environments. The
experimental setup consisted of an aerosol generator, which mimicked the subject affected
by SARS-CoV-19, and an aerosol detector, representing a subject who could potentially
contract SARS-CoV-19. Experiments of aerosol dispersion and clearing were undertaken in
situ in a variety of rooms with 2 different types of PAC in various combinations and
positions. Correct use of PAC can reduce the clearance half-life of aerosols by 82%
compared to the same indoor-environment without any ventilation, and at a broadly
equivalent rate to built-in mechanical ventilation. In addition, the highest level of aerosol
concentration measured when using PAC remains at least 46% lower than that when no
mitigation is used, even if the PACâs operation is impeded due to placement under a table.
The use of PAC leads to significant reductions in the level of aerosol concentration,
associated with transmission of droplet-based airborne diseases. This could enable NHS
departments to reduce the downtime between consultations/procedures
Kramers' law for a bistable system with time-delayed noise
peer-reviewedno abstract availablePUBLISHEDpeer-reviewe
Dangerous liaisons: youth sport, citizenship and intergenerational mistrust
This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Sport Policy and Politics on 24/3/2014, available online: DOI 10.1080/19406940.2014.896390This paper reflects on and offers a critical analysis of the relationship between youth sport and citizenship development, in practice and in the UK policy context of sports coaching and physical education. While deploying data and insights from a recently completed research project in England, which identified substantial tensions in intergenerational relationships in sport and coaching, the argument and analysis also invokes wider international concerns and more generally applicable implications for policy and practice. Drawing heuristically upon the philosophy of Dewey (2007 [1916]), it is recognised that the concept of citizenship as a form of social practice should seek to encourage the development of complementary traits and dispositions in young people. To develop socially and educationally thus entails engagement in meaningful social and cultural activity, of which one potentially significant component is participation in youth sport, both within and outside formal education. However, it is argued that any confident assumption that sporting and coaching contexts will necessarily foster positive traits and dispositions in young people should be considered dubious and misplaced. Deploying a Lacanian (1981) perspective to interpret our data, we contend that âliaisonsâ and interactions between coaches and young people are often treated suspiciously, and regarded as potentially âdangerousâ
Defining Potential Therapeutic Targets in Coronavirus Disease 2019: A Cross-Sectional Analysis of a Single-Center Cohort
OBJECTIVES:
Multiple mechanisms have been proposed to explain disease severity in coronavirus disease 2019. Therapeutic approaches need to be underpinned by sound biological rationale. We evaluated whether serum levels of a range of proposed coronavirus disease 2019 therapeutic targets discriminated between patients with mild or severe disease.
DESIGN:
A search of ClinicalTrials.gov identified coronavirus disease 2019 immunological drug targets. We subsequently conducted a retrospective observational cohort study investigating the association of serum biomarkers within the first 5 days of hospital admission relating to putative therapeutic biomarkers with illness severity and outcome.
SETTING:
University College London, a tertiary academic medical center in the United Kingdom.
PATIENTS:
Patients admitted to hospital with a diagnosis of coronavirus disease 2019.
INTERVENTIONS:
None.
MEASUREMENTS AND MAIN RESULTS:
Eighty-six patients were recruited, 44 (51%) with mild disease and 42 (49%) with severe disease. We measured levels of 10 cytokines/signaling proteins related to the most common therapeutic targets (granulocyte-macrophage colony-stimulating factor, interferon-α2a, interferon-ÎČ, interferon-Îł, interleukin-1ÎČ, interleukin-1 receptor antagonist, interleukin-6, interleukin-7, interleukin-8, tumor necrosis factor-α), immunoglobulin G antibodies directed against either coronavirus disease 2019 spike protein or nucleocapsid protein, and neutralization titers of antibodies. Four-hundred seventy-seven randomized trials, including 168 different therapies against 83 different pathways, were identified. Six of the 10 markers (interleukin-6, interleukin-7, interleukin-8, interferon-α2a, interferon-ÎČ, interleukin-1 receptor antagonist) discriminated between patients with mild and severe disease, although most were similar or only modestly raised above that seen in healthy volunteers. A similar proportion of patients with mild or severe disease had detectable spike protein or nucleocapsid protein immunoglobulin G antibodies with equivalent levels between groups. Neutralization titers were higher among patients with severe disease.
CONCLUSIONS:
Some therapeutic and prognostic biomarkers may be useful in identifying coronavirus disease 2019 patients who may benefit from specific immunomodulatory therapies, particularly interleukin-6. However, biomarker absolute values often did not discriminate between patients with mild and severe disease or death, implying that these immunomodulatory treatments may be of limited benefit
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