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201.
Primary physical education (PPE) is increasingly being recognised for the role it can potentially play in setting a foundation for lifelong engagement in physical activity. However, the majority of the literature continues to focus on the negative features of the subject within the primary context. Whilst acknowledging the existence of these barriers, this paper sets out to take a proactive approach by presenting a conceptual framework for PPE that seeks to support a renewed and positive vision for the future. Based on ideas from complexity thinking, the framework represents a move beyond the more positivist and linear approaches that have long been reported to dominate practices in PPE and recognises learners as active agents engaged in a learning process that is collaborative, non-linear and uncertain. While acknowledging the contested nature of the complexity field, the paper explores how key principles, including self-organisation, emergence, similarity, diversity, connectedness, nestedness, ambiguous bounding, recursive elaboration and edge of chaos, offer a lens that views PPE as a complex system. With the children's learning positioned as the focus of PPE in the educational setting, the paper discusses how complexity principles interweave with the ecological components to help us better understand and more creatively engage with the complex nature of PPE developments. Specifically, these components are identified as PPE learning experiences and their associated pedagogy, teachers and their PPE professional learning and key environmental factors that include the physical environment and key stakeholders who influence developments across the different levels of the education system. The paper concludes by suggesting that this complexity-informed PPE framework represents an open invitation for the all those involved in PPE to engage in a collective process of exploration and negotiation to positively influence developments in PPE.  相似文献   
202.
The aim of this study was to assess the effect of a unilateral anterior cruciate ligament reconstruction (ACLR) on maximum voluntary contraction (MVC) and explosive strength of both the involved limb and the uninvolved limb. Nineteen male athletes completed a standard isometric testing protocol 4 months post-ACLR, while 16 healthy participants served as a control group (CG). The explosive strength of the knee extensors and flexors was assessed as RFD obtained from the slope of the force–time curves over various time intervals. Both muscle groups of the involved limb had significantly lower MVC compared to the uninvolved. The involved limb also had significantly lower RFD in the late phase of contraction (140–250 ms) for both knee extensors and flexors (P < 0.05). There was no difference in MVC between the uninvolved limb and the CG. However, RFD of the uninvolved limb was lower compared to CG for both knee extensors (0–180 ms; P < 0.01) and flexors (0–150 ms; P < 0.05). ACLR leads to lower MVC and explosive strength of the involved limb. As a consequence of potential crossover (presumably neural-mediated) effects, explosive strength deficits could be bilateral, particularly in the early phase of the contraction (<100 ms).  相似文献   
203.
In this paper, we review the empirical literature pertaining to the effectiveness of instructions and movement demonstrations. Initially, we examine existing theories and approaches that try to explain the process of skill acquisition so as to determine implications of these theories for instructional provision. This is followed by an evaluation of studies in the motor learning literature in which pre-practice information has been manipulated. Explicit learning strategies are contrasted to implicit and discovery learning methods, and current explanations for instructional effects are discussed in terms of such mechanisms as effects-related attentional focus and movement variability. In the final sections, we review data from our own laboratory where pre-practice information has been manipulated during the learning of a novel bimanual coordination task. From these studies, proposals are made to try and explain how pre-practice information works to effect the process of skill acquisition, including the selection and execution of a response and the processing of associated feedback. An important role is given to the existing skills of the learner in understanding the instructions and performing the desired movement. Finally, we suggest some practical implications of this empirical evidence for the teaching of motor skills.  相似文献   
204.
Healthcare organisations are facing the constant trade off to contain expenditures without sacrificing the quality of patient's care. This challenge to do ‘more with less’ induced healthcare executives to heavily invest in innovations activities in order to increase the efficiency of their organisations. By taking an individual-level perspective, our study focuses on knowledge-sharing behaviour among healthcare practitioners as a critical element to continuously improve the performance of healthcare organisations. Specifically we explore the effect of intellectual capital on practitioners’ knowledge-sharing behaviour, and propose organisational knowledge-sharing climate as mediator. We conducted a survey on three healthcare organisations. Our results substantiate the positive link between intellectual capital and knowledge-sharing behaviour, and reveal that organisational knowledge-sharing climate fully mediates this relationship. These findings provide hospital managers with key implications for the management of intellectual capital as a lever to improve the sharing and the diffusion of knowledge among practitioners.  相似文献   
205.
Archives are an extremely valuable part of our cultural heritage since they represent the trace of the activities of a physical or juridical person in the course of their business. Despite their importance, the models and technologies that have been developed over the past two decades in the Digital Library (DL) field have not been specifically tailored to archives. This is especially true when it comes to formal and foundational frameworks, as the Streams, Structures, Spaces, Scenarios, Societies (5S) model is.  相似文献   
206.

Throughout England, young people in schools are entitled to a comprehensive programme of sex education as part of Personal, Social and Health Education (PSHE). Current debate about the content of such a programme is informed by new government guidance on sex and relationship education as well as pre-existing concerns about homophobic bullying, sexual health and mental health. In an English local authority, an externally funded Young Gay and Bisexual Men's Development Worker provided educational activities to address sexual orientation and identity issues to four schools. An evaluation sought to identify whether successes had been achieved and why. A further aim was to identify useful learning about the role of external professionals in carrying out effective education about sexual orientation with young people in schools. The evaluation was developed within the context of a number of 'real-world' limitations. Nevertheless, a significant number of project successes (and areas for development) were documented. Successes included raising awareness of key issues among pupils and supporting teachers engaged in PSHE. Key factors contributing to success included: adequate preparation of teachers and pupils in schools; an appropriately skilled and experienced project worker; and a considered approach to building partnerships with schools and working with young people.  相似文献   
207.
Despite the ongoing global financial crisis, there is an increasing deployment of migrant workers across the globe, and in Hong Kong the foreign domestic worker occupies a ubiquitous presence in the lives of many families. Seven domestic workers from Indonesia, the Philippines, and Thailand were interviewed to gain insight into their role in providing education and care for children in Hong Kong. This exploratory study focuses on the educational and care aspects of the work of foreign domestic workers. It considers the nature of their work and their relationship with the mother of the family. Findings reveal the difficulties of maintaining coordinated education and care of children in a culture where the dynamics of the unequal power relations are clearly demarcated. We raise new possibilities for interdisciplinary work to re-theorise the ways in which foreign domestic workers act as educators of young children and we call for new methodologies to enable their potential.  相似文献   
208.
We examined whether altering the amount of and moment when visual information is presented affected observational learning for participants practicing a bowling skill. On Day 1, four groups practiced a cricket bowling action. Three groups viewed a full-body point-light model, the model's bowling arm, or between-limb coordination of the model's left and right wrists only. Following retention tests on Day 2, all participants practiced after viewing a full-body display. Retention was again tested on Day 3. Bowling accuracy improved in all four practice groups. Kinematics of the bowling arm became more like the model for the full-body and intralimb groups only. All groups improved on measures of interlimb coordination. Visual search data indicated that participants mainly focused their gaze on the model's bowling arm. These data lead to the suggestion that viewing “end-effector” information (i.e., information pertaining to the bowling arm) is an important perceptual constraint early in observational learning. Implicit manipulations designed to increase attention to other sources of information did not facilitate the learning process.  相似文献   
209.
The past decade has witnessed increased interest in the visual search behaviour of athletes. Little is known, however, about the relationship between anxiety and eye movements in sport performers or about the extent to which athletes' planned and actual visual search strategies correspond. To address these issues, we conducted two studies. In Study 1, eight expert female gymnasts were presented with three digital slides of a model performing a skill that is known to be anxiety-provoking in this sport - namely, the 'back flip' on the beam. By varying the height of the beam and the presence or absence of safety mats, the slides differed in the amount of anxiety that they elicited vicariously in the viewer. In the study, the gymnasts were asked to imagine themselves in the position of the depicted model and to describe the anxiety that they felt. As they viewed the slides, their eye movements were recorded. As predicted, anxiety was associated with an increase in the number of fixations to peripheral areas. In addition, the more 'threatening' slides elicited significantly more fixations than the less feared images. In Study 2, the plans of 15 equestrian performers (5 expert, 5 intermediate and 5 novice) were elicited as they engaged in a virtual 'walk' around a computerized show-jumping course. Contrary to expectations, the congruence between intended and actual search behaviour was not significantly greater for expert riders than for the less skilled groups. Also, the fact that the top riders allocated more fixations to slides than the less skilled performers challenged the prediction that expertise would be associated with economy of visual search. Finally, as expected, the expert riders were significantly less dependent on the overall 'course plan' than the intermediate and novice equestrian performers when inspecting the fences.  相似文献   
210.
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