科研人员省际流动网络分析及演化过程研究     

王寅秋  罗晖  杨光 《科研管理》2022,43(3):79-88

   本文基于“科学家在线”平台数据,运用复杂网络分析方法,按照年份分别构建2010—2017年间全国34个省份之间科研人员流动网络模型,测度并分析8年间科研人员流动的复杂性网络整体特征和随时间变化的趋势。研究发现：（1）8年间科研人员流动呈现整体较为明显的“无标度”特性,即北京、上海、江苏等经济科技发达地区不仅流入科研人员的规模较大,流出科研人员的规模也不小,但是全国大部分省份流动科研人员规模较为有限;（2）除了小部分省份之外其余省份的人员流入流出相对较为均衡,一些经济科技发达省份在一定程度上也是全国或本区域科研人员流动的中心节点;（3）从发展态势来看,8年间全国省级科技人员流动态势相对平稳,但是省份之间科研人员流动规模差距越来越明显,经济科技发达省份与其他省份科研人员流动的规模相比差距越来越大;（4）最为突出的变化是流动人员规模显著增加,人员流动更加便利。  相似文献   

Skating mechanics of change-of-direction manoeuvres in ice hockey players     

Antoine Fortier  René A. Turcotte 《Sports biomechanics / International Society of Biomechanics in Sports》2014,13(4):341-350

Ice hockey requires rapid transitions between skating trajectories to effectively navigate about the ice surface. Player performance relates in large part to effective change-of-direction manoeuvres, but little is known about how those skills are performed mechanically and the effect of equipment design on them. The purpose of this study was to observe the kinetics involved in those manoeuvres as well as to compare whether kinetic differences may result between two skate models of varying ankle mobility. Eight subjects with competitive ice hockey playing experience performed rapid lateral (90°) left and right change-of-direction manoeuvres. Kinetic data were collected using force strain gauge transducers on the blade holders of the skates. Significantly greater forces were applied by the outside skate (50–70% body weight, %BW) in comparison to the inside skate (12–24%BW, p < 0.05). Skate model and turn direction had no main effect, though significant mixed interactions between leg side (inside/outside) with skate model or turn direction (p < 0.05) were observed, with a trend for left-turn dominance. This study demonstrates the asymmetric dynamic behaviour inherent in skating change-of-direction tasks.  相似文献   

当前我国体育人口流动模式及发展研究   总被引：1，自引：0，他引：1  

程蕾  庞元宁  蔡兴林  伍波 《山东体育学院学报》2005,21(3):15-17

以《2001年中国群众体育发展现状调查》研究成果为基础，对1996，2000年两次群众体育现状调查的数据资料进行对比，研究当前我国体育人口流动模式中出现的“沙漏”问题，分析促使当前我国体育人口可持续发展的关键所在，并从推动体育人口健康发展，推动全民健身计划纲要的深入实施的角度出发，提出当前我国体育人口流动模式的发展建议。  相似文献   

体育社会分层研究述评   总被引：1，自引：0，他引：1  

赵溢洋  刘一民 《山东体育科技》2007,29(1):8-10

通过对体育社会分层研究文献的回顾,介绍了体育社会分层的社会性、历史性、普遍性、多样性和有效性。同时从体育中的社会分层以及社会分层中的体育两个视角讨论运动员的社会流动,以及不同社会阶层的体育运动参与模式。提出了中国体育社会分层理论与实践研究需要探讨的若干问题。  相似文献   

音乐疗法对运动员运动性失眠的影响   总被引：2，自引：0，他引：2  

郭建龙  李振斌 《山东体育科技》2006,28(2):34-36

通过查阅文献资料,总结了有关专家对运动疲劳以及音乐疗法研究的理论和成果。对运动性失眠产生的原因、主要的治疗方法、音乐疗法的历史背景和现状及音乐疗法对人体生理与心理的良好作用等方面进行探讨和研究,为教练员和运动员在训练和比赛后能及时消除运动疲劳以及运动性失眠提供参考依据。  相似文献   

The influence of grandparents’ social class on children’s aspirations     

Vanessa Moulton  Eirini Flouri  Heather Joshi  Alice Sullivan 《British Journal of Sociology of Education》2017,38(4):500-517

Social class mobility from grandparent to grandchild is a relatively neglected topic. Grandparents today are often healthier and more active, and have longer relationships with their grandchildren than in previous generations. We used data from the UK’s Millennium Cohort Study (n = 8570) to investigate the influence of maternal and paternal grandparents’ social class on the aspirations of children at age seven. Using path analysis and controlling for family income, mother’s and father’s education, lone motherhood, and child’s ethnicity and gender, we found very small direct effects from the paternal grandmother’s social class to the grandchild’s classed aspirations, and small, indirect effects, via parents’ class, of grandparents’ class on child’s classed aspirations. Multi-group analyses found few differences by ethnicity and gender. There was no evidence that, at this age, mixed-class parentage raises the aspirations of working-class children (the ‘sunken middle-class’ hypothesis).  相似文献   

Upwardly mobile working-class adolescents: a biographical approach on habitus dislocation     

Michael Christodoulou  Manos Spyridakis 《Cambridge Journal of Education》2017,47(3):315-335

Habitus dislocation is a much debatable term. By presenting life-histories of working-class adolescents, this article argues (i) that not all upwardly mobile working-class adolescents experience habitus dislocation and, (ii) that habitus dislocation has its roots in the self-initiated ruptures that face some of those who want to be upwardly mobile and who are trying to replace ‘second-nature’ dispositions with newly made schemes of action and with self-understandings disconnected from their childhood socialisation. It is not that social mobility produces habitus dislocation but that social mobility feeds and intensifies something that existed prior to their educational achievement. For this reason the authors consider that biographical method is an extremely powerful tool for grasping the way adolescents deal with the discontinuities created in their teen life-world experiences.  相似文献   

“Theorizing teacher mobility”: a critical review of literature     

Robert Vagi  Margarita Pivovarova 《Teachers and Teaching》2017,23(7):781-793

In this critical review of literature, we summarize the major theoretical frameworks that have been used to study teacher mobility. In total we identified 40 teacher mobility studies that met our inclusion criteria. We conclude that relatively few theoretical frameworks have been used to study teacher mobility and those that have been used are lacking in several key areas. Specifically, none of the current teacher mobility theories are able to adequately account for the many teacher- and school-level factors that likely influence teachers’ professional decisions. Finally, we suggest a theoretical framework from the organizational psychology literature that can address the shortcomings of theories identified in this review.  相似文献   

Shaping global teacher identity in a short-term mobility programme     

Donna Tangen  Deborah Henderson  Jennifer Alford  Erika Hepple  Amyzar Alwi  Zaira Abu Hassan Shaari 《Asia-Pacific Journal of Teacher Education》2017,45(1):23-38

This article explores the shaping of Australian and Malaysian pre-service teachers’ possible selves in a short-term mobility programme. With the theory of possible selves, individuals imagine who they will become based on their past and current selves. The focus of the research was on pre-service teachers’ possible selves as global and culturally responsive teachers. The experiential learning through participation in the programme allowed participants to consider their future possible selves as teachers with a deeper understanding of diverse learners’ needs and how they might strive to address these needs in their own classrooms. The scaffolding of reflections in the programme encouraged the pre-service teachers to take on multiple perspectives, to step outside their comfort zones and in many ways to see the world from different eyes. The research found that through experiential learning in the short-term mobility programme both the Australian and Malaysian pre-service teachers gained in positioning their cultural selves currently and as future teachers, suggesting that there is merit in utilising the theory of possible selves in future research in the area of shaping teacher identity.  相似文献   

Mobile self-fashioning and gendered risk: rethinking Chinese students’ motivations for overseas education     

Fran Martin 《Globalisation, Societies & Education》2017,15(5):706-720

This article complicates dominant instrumentalist understandings of international student motivation by focusing on Chinese female tertiary students in Australia. Based on longitudinal fieldwork with 56 such students, it analyses motivations described by students and their parents in interviews, showing that these far exceed instrumentalism and engage tactics of both gendered risk management and cosmopolitan self-fashioning. Discussion of the gendered risks in post-socialist China that students seek to mitigate through study abroad illustrates the complexity of students’ motivations, and underlines the limitations of western European sociological theories of risk society which assume that gender inequality tends to decrease in late modernity.  相似文献