排序方式： 共有8条查询结果，搜索用时 15 毫秒
1
1.
Stuart JH Biddle CK John Wang Nikos LD Chatzisarantis 《Journal of sports sciences》2013,31(12):973-989
Three studies are reported of children and youth aged 11–19 years (n?=?3478) examining the nature of beliefs about athletic ability. Drawing on related research in academic, moral and stereotyping domains, development of a psychometric instrument assessing athletic ability beliefs is detailed. Support was found for a multidimensional hierarchical structure that is invariant across age and gender. Confirmatory factor analysis revealed a structure comprising two higher-order factors of entity and incremental beliefs underpinned by beliefs that athletic ability is stable and a gift (entity), and is open to improvement and can be developed through learning (incremental). Incremental beliefs, indirectly through a task goal orientation, and entity beliefs directly, predicted self-reported amotivation towards physical education and sport. On the other hand, enjoyment of physical activity in youth was predicted directly by task orientation and incremental beliefs. Predictions concerning the moderating role of perceived competence were not supported. Our findings highlight the importance of ability beliefs and goals in understanding the determinants of physical activity in children and youth. 相似文献
2.
3.
Interorganisational linkages are a widely studied topic in sport management. However, most researchers focus on public or non-profit organisations and analyse one focal organisation rather than a network of interrelated organisations. The purpose of this study was to address both of these shortcomings by investigating interorganisational linkages in sport clusters, a type of cross-sectoral network. The authors address three main questions: (a) what is the nature of interorganisational linkages in sport clusters; (b) how do linkages in sport clusters develop; and (c) what are the organisational motivations for creating or joining linkages in sport clusters? A multiple case study approach explores two sailing clusters in France and New Zealand. Results show that interorganisational relationships tend to be formalised, while interorganisational networks tend to be informal. A circular development process from formal relationships to formal networks via informal relationships and networks was detected. Reciprocity is the most prevalent motive for the development of all types of interorganisational linkages. This research contributes to sport management practice by showcasing the potential multitude and variety of interorganisational linkages in a cross-sectoral sport context which are foundations for cooperation and collaboration. The theoretical contribution lies in the conceptualising of the IOR development process and different motivational patterns as antecedents. 相似文献
4.
Markus Gerke 《Sport in Society》2018,21(6):932-945
AbstractBased on ethnographic research with supporters’ groups in the US, this article explores how Ultra and other global models of fandom are being appropriated by soccer fans in the US and Canada. I argue that these fans enact more than stylistic expressions of fandom but instead contest the boundaries of locally accepted models fandom. Most notably, organized soccer supporters in the US reject the notion of being simply consumers of sports entertainment and see themselves instead as stakeholders in the teams they follow and as de facto constituents that the clubs need to be accountable to. At the same time, the global and local organizational structures and histories of professional soccer confront these fans with specific restrictions in how they are able to articulate their interest as fans. 相似文献
5.
6.
OBJECTIVE: The goals of this study were to examine the role of dissociation and depression as possible mediators of the relationship between several forms of childhood trauma and bulimic symptomatology and to explore potential ethnic differences in these relationships. METHOD: Four hundred seventeen female undergraduates participated in this cross-sectional study. They completed measures of dissociative, depressive, and bulimic symptoms, and childhood trauma. Experiences of multiple forms of childhood trauma were measured, including physical abuse, sexual abuse, emotional abuse, physical neglect, and emotional neglect. However, only emotional abuse was correlated with bulimic symptoms at p<.01. Therefore, other forms of trauma were excluded from the analyses to control for Type I error. RESULTS: Dissociation was not associated with emotional abuse after controlling for depression; therefore, tests of dissociation as a mediator were discontinued. Depression was significantly associated with emotional abuse after controlling for dissociation. Emotional abuse was significantly associated with bulimia. Finally, emotional abuse and depression together were significantly associated with bulimia after controlling for dissociation. However, emotional abuse became nonsignificant when entered with depression, indicating that depression mediated the relationship between emotional abuse and bulimic symptoms. There were no ethnic differences in this relationship. CONCLUSIONS: It appears that among women who have experienced childhood emotional abuse, depression is more strongly associated with unhealthy eating behaviors than is dissociation. Results also suggest that emotional abuse is a form of childhood trauma particularly relevant to bulimia. 相似文献
7.
Image-based modeling is an appropriate technique to create 3D models of cultural heritage objects, which starts with the basic task of designing the camera network. This task is, however, quite crucial in practical applications because it needs a thorough planning and a certain level of experience. The optimal camera network is designed when certain accuracy demands are fulfilled with a reasonable effort, namely keeping the number of camera shots at a minimum. In this study, we report on the development of an automated method for designing the optimal camera network for a given cultural heritage building or statue. Starting from a rough point cloud derived from a video image stream, the initial configuration of the camera network is designed, assuming a high-resolution HR state-of-the-art non-metric camera. To improve the image coverage and accuracy, we use a mathematical non-linear optimization with constraints. Furthermore, synthetic images are created to guide the camera operator to the designed images. From the first experimental test, we found that a target accuracy of 10 mm could be maintained although the initial number of more than 300 high-resolution images got reduced to less than 90 for the final, optimized network. 相似文献
8.
Oke Gerke 《Teaching Statistics》2013,35(2):89-93
Trading cards for various sports and a range of other subjects such as architecture, animals, hobbies, and war have been in existence since the late nineteenth century and still enjoy great popularity. Two of the most prominent examples are baseball cards in the U.S. and football cards in Europe. Three strategies for collecting European football trading cards were investigated for two different groups: either a single collector or two collectors joining forces. An activity is proposed in which students use a simulation to compute the factor by which the number of trading cards bought exceeds the number to be collected. This enables them to estimate the expected costs of completing a collection of trading cards. The overall expected costs vary considerably, depending on the strategy used. Savings for a team of two collectors as opposed to a single collector are indicated. 相似文献
1