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51.
We examined mechanisms of coordination that enable skilled recreational baseball players to make fast overarm throws with their skilled arm and which are absent or rudimentary in their unskilled arm. Arm segment angular kinematics in three dimensions at 1000 Hz were recorded with the search-coil technique from the arms of eight individuals who on one occasion threw with their skilled right arm and on another with their unskilled left arm. Compared with their unskilled arm, the skilled arm had: a larger angular deceleration of the upper arm in space in the forward horizontal direction; a larger shoulder internal rotation velocity at ball release (unskilled arms had a negative velocity); a period of elbow extension deceleration before ball release; and an increase in wrist velocity with an increase in ball speed. It is suggested that some of these differences in arm kinematics occur because of differences between the skilled and unskilled arms in their ability to control interaction torques (the passive torque at one joint due to motion at adjacent joints). It is proposed that one reason unskilled individuals cannot throw fast is that, unlike their skilled counterparts, they have not developed the coordination mechanisms to effectively exploit interaction torques. 相似文献
52.
This study presents estimates of a model that includes the racial composition and academic quality of public schools among the determinants of housing prices. Results suggest that academic quality is a more important factor in the determination of housing values than the racial ratio of pupils in area schools. Drawing on estimates of the model, a school preference index (SPI) is developed. The SPI is found to be positively correlated to the level of the academic achievement and negatively related to the level of nonwhite school enrollment. The SPI also is shown to be positively correlated to the level of new residential construction. 相似文献
53.
Paul Watts Mahwish Hayee Shahid Marcello Bertotti Patrick Tobi 《European Journal of Sport Science》2017,17(7):904-912
Multiple individual and neighbourhood characteristics are theorised to influence adult sedentary behaviour. The aim of this study was to examine associations between individual and neighbourhood-level characteristics in 40 deprived neighbourhoods in London, UK. A cross-sectional design was utilised with baseline data from the Well London Cluster Randomised Controlled Trial in 40 deprived neighbourhoods in London. Multilevel linear regression was used to examine associations between individual characteristics (measured by household survey), neighbourhood characteristics (neighbourhood audit, GIS and routinely available datasets) and sedentary behaviour (sitting time). Individual-level positive mental well-being and health behaviours were associated with sedentary time. Individual-level social networks were associated with decreased sedentary time in men and increased sedentary time in women. Neighbourhood-level measures of social networks and perceived neighbourhood quality were associated with reduced sedentary time. Fifteen per cent of the variance in sedentary time was attributable to differences at the neighbourhood level (intra-class correlation coefficient?=?0.15). These findings suggest that social networks at the individual and neighbourhood levels, collective perceptions of neighbourhood quality, individual-level positive mental well-being and other health behaviours may be important components of interventions developed to reduce sedentary time in deprived populations. 相似文献
54.
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56.
A. G. Watts 《Higher Education in Europe》1994,19(3):73-83
The strength of specialist careers advisory services in United Kingdom universities is linked to the in loco parentis tradition and also to the tradition of occupational flexibility on graduation. The evolution of such services from appointments boards to careers services is traced in terms of three sequential changes: the impact of counselling, the growth of careers education, and the move towards an open‐access style of delivery. The overlap of roles between careers services and teaching departments is analyzed in relation to individual guidance and placement, and particularly in relation to careers education. The extent of overlap tends to vary between vocational, semi‐vocational, and non‐vocational courses. The emergence of the concept of personal transferable skills has encouraged new forms of partnership between careers services and teaching departments. This development raises questions about where careers services should be located organizationally within higher education institutions. Should they, for example, be aligned to other student services, to academic services, or to marketing services? What organizational benefits do institutions seek from such services? Are they part of the core offer made to students, or additional.services which are open to. review in terms of their specific costs and benefits? 相似文献
57.
Tony Watts 《International journal for the advancement of counseling》2003,25(2-3):119-120
58.
A. G. Watts 《Prospects》1988,18(4):471-482
National Institute for Careers Education and Counselling (jointly sponsored by the Careers Research and Advisory Centre and by Hatfield Polytechnic). Research interests include careers guidance and the relationship between education and work. Has acted as a consultant to international organisations including the European Commission, OECD and Unesco. Books include Career Development in Britain, Work Experience in Schools,and Education, Unemployment and the Future of Work. 相似文献
59.
Contemporary discussion of the ‘crisis in democracy’ displays a tendency to see young people as the problem because they are ‘apolitical’, ‘apathetic’ and ‘disengaged’, or point to deficiencies in institutions deemed responsible for civic education. This discussion normally comes as a prelude to calls for more civics education. This article points to a renewal of politics at the hands of young people relying on new media, and draws on evidence like survey research, case studies and action research projects. This political renewal is occurring largely in response to the assumption of political elites that a ‘politics-as-usual’ will suffice to address the major political challenges of our time. Against the assumption that teachers, curriculum experts and policy-makers already know what kinds of knowledge and skills students need to become good citizens, we make a case for co-designing a contemporary citizenship curriculum with young people to be used for the professional development of policy-makers. We argue that such an intervention is likely to have a salutary educational effect on policy-makers, influence how they see young people’s political engagement and how they set policy agendas. The article also canvasses the protocols such a project might observe. 相似文献
60.
Abstract A total of 90 15‐16‐year‐old female pupils from a single‐sex secondary grammar school did the Cognitive Styles Analysis which assessed their position on the Wholist‐Analytic and Verbal‐Imagery learning style dimensions. They were asked to select their preferred format of a single‐sheet handout on study skills which was offered in three modes: Unstructured‐Verbal, Structured‐Verbal and Structured‐Pictorial. Each mode contained the same information and differed only in format. On the format preference, there was a significant effect of the Verbal‐Imagery dimension (p = 0.002), with the majority of Verbalisers choosing the Structured‐Verbal sheet and the Imagers opting for the Structured‐Pictorial version. There was a smaller effect on the Wholist‐Analytic dimension, where Wholist had a preference for the Structured‐Pictorial and the Analytics for the Structured‐Verbal version (p = 0.056). The findings were discussed in terms of their practical implications for a differentiated approach to instruction. 相似文献