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41.
This article challenges two widely-held beliefs about the differences in the performance of boys and girls at school. The 'gap' between the achievement of boys and girls is not growing, and may be shrinking. The gap is not predominantly a problem of low achievement, nor is it uniformly distributed across the range of attainments. The gap, in favour of girls, mainly appears at the higher levels in any assessment. The change in understanding of the nature of the gender gap described here comes from simple methodological advances in the analysis of gendered results in examination and statutory assessments. The implications for research and policy in this area are substantial, since unless the nature of the problem is well understood research may be directed at explicating, and policy directed at ameliorating, a gender gap of a form which simply does not exist. For example, while disaffection from the process of education may be a very real problem and certainly one that is worthy of research, there is little evidence here that it is primarily a gender-related problem. 相似文献
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In this study, we examined the methods used and knowledge required by 16 elite men's gymnastic coaches in the development of skill progressions. Following in-depth interviews, a conceptual model representing the process of skill progression development was generated. We found that: (1) elite gymnastic coaches developed skill progressions through experimental practice, reflection and critical inquiry; (2) the development of skill progressions was underpinned by the coaches acquiring a mindset based on four further sub-components (i.e. skill progression refinement, current coaching knowledge, mental imagery and biomechanical understanding); and (3) coaches identified the importance of replication of the spatial and temporal characteristics of the final skill. The results are consistent with task analysis, reflective practice and the principle of specificity. Practically, these findings suggest the need to develop coaches with a more objective approach to skill progression development and a greater understanding of the controlling mechanisms inherent in such practices. 相似文献
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ABSTRACTCurrent evidence suggests that chronic inflammation contributes to the development of coronary artery disease (CAD). Interestingly, exercise may constitute a method of reducing inflammation in this patient population. As such, this systematic review and meta-analysis examined the evidence generated by randomised studies that investigated the effect of exercise on inflammatory biomarkers in CAD. Literature was sought from various sources. Outcomes were pooled in a random-effects model to calculate standardised mean differences (SMD) with 95% confidence intervals (CI). Twenty-five studies were reviewed; post-intervention C-reactive protein (SMD: ?0.55 (95% CI: ?0.93, ?0.16), P = 0.005), fibrinogen (SMD: ?0.52 (95% CI: ?0.74, ?0.29, P = <0.00001)), and von Willebrand factor (SMD: ?1.57 (95% CI: ?2.23, ?0.92), P = <0.00001) values were significantly lower in exercise groups compared to controls. In addition, qualitative analyses identified evidence that supports a beneficial effect of exercise on these acute-phase reactants. However, the impact of exercise on anti–inflammatory cytokines, adhesion molecules, and chemokines is equivocal, which may be attributed to a paucity of research. Nevertheless, the findings of this review suggest that exercise induces an anti–inflammatory effect in CAD patients. Although, the quality of evidence needs to be improved by further randomised studies with high methodological qualities and large sample sizes. 相似文献
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Thiolene-based microfluidic devices have been coupled with surface plasmon resonance imaging (SPRI) to provide an integrated platform to study interfacial interactions in both aqueous and organic solutions. In this work, we develop a photolithographic method that interfaces commercially available thiolene resin to gold and glass substrates to generate microfluidic channels with excellent adhesion that leave the underlying sensor surface free from contamination and readily available for surface modification through self-assembly. These devices can sustain high flow rates and have excellent solvent compatibility even with several organic solvents. To demonstrate the versatility of these devices, we have conducted nanomolar detection of streptavidin-biotin interactions using in situ SPRI. 相似文献
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This paper explores historical patterns of change in participation in higher education in Wales, using as an organising framework Halsey's (1992) distinction between higher education as an administrative and as a social system. The nineteenth-century development of Welsh higher education was both part of a distinctive national political project and reflected the specificities of wider Welsh society. Expansion through the early and middle decades of the present century eroded this distinctiveness, as both the governance of Welsh higher education and patterns of student recruitment and participation became increasingly integrated into an 'England and Wales' system. The more recent expansion of higher education institutions in Wales, as well as the participation of Welsh students in higher education overall, has further accentuated this social integration into an 'England and Wales' system. Currently, Wales exhibits a pattern of participation which is unique amongst the home countries, whereby the Welsh higher education institutions serve very substantial numbers of students from England (and to a much lesser extent elsewhere), whilst a large proportion of Welsh students register at institutions in England. This indicates that there is now a significant disjuncture between an increasingly distinct pattern of governance of Welsh higher education and a pattern of participation which is massively integrated in the 'England and Wales' system. 相似文献
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