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151.
The utilisation of motor performance tests for talent identification in youth sports is discussed intensively in talent research. This article examines the reliability, differential stability and validity of the motor diagnostics conducted nationwide by the German football talent identification and development programme and provides reference values for a standardised interpretation of the diagnostics results. Highly selected players (the top 4% of their age groups, U12–U15) took part in the diagnostics at 17 measurement points between spring 2004 and spring 2012 (= 68,158). The heterogeneous test battery measured speed abilities and football-specific technical skills (sprint, agility, dribbling, ball control, shooting, juggling). For all measurement points, the overall score and the speed tests showed high internal consistency, high test–retest reliability and satisfying differential stability. The diagnostics demonstrated satisfying factorial-related validity with plausible and stable loadings on the two empirical factors “speed” and “technical skills”. The score, and the technical skills dribbling and juggling, differentiated the most among players of different performance levels and thus showed the highest criterion-related validity. Satisfactory psychometric properties for the diagnostics are an important prerequisite for a scientifically sound rating of players’ actual motor performance and for the future examination of the prognostic validity for success in adulthood.  相似文献   
152.
  • In 25 years, open access has become a significant part of scientific communication, but its success story should not conceal a fundamental change of its nature.
  • Open access started at the grassroots, as a bottom‐up, community‐driven model of open journals and repositories but today the driving forces are commercial, institutional, and political interests.
  • The fall of open access as a community‐driven model is running the risk of becoming dysfunctional for scientists and may create new barriers and digital divides.
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This paper reports on the second phase of a multi‐country study examining cross‐cultural perspectives of gender and management in universities. The first phase of this research with eight countries found that the representation of women was consistently low, especially at Rector/Vice Chancellor level. In the second phase interviews were conducted with both male and female senior managers including current and former Rectors/Vice Chancellors. The focus of this paper is on the organisational barriers to women becoming and being managers in Turkish and New Zealand universities. Twenty‐four interviews were conducted in Turkey and 26 in New Zealand. Rectors/Vice Chancellors and other senior academic colleagues were found to be crucial in supporting academics into senior management. Barriers discussed include time management and role conflict between work and non‐work life.  相似文献   
156.
While research into educational inequalities emphasises childhood socio‐economic status, this study adds another dimension of status into the analysis; namely, the child’s own social position among its peers. The aim was to examine whether socio‐economic status and peer status can both be linked to educational transitions and, if so, whether they constitute overlapping paths. In a second step of analyses, the relationship between peer status and adult unemployment was investigated. Data were derived from a longitudinal study using a 1953 cohort born in Stockholm, Sweden. Our results suggest that children with higher socio‐economic status and children with higher peer status are consistently more likely than their lower status peers to proceed to the next level of education, and that the effects of socio‐economic status and peer status hardly overlapped at all. Furthermore, educational differences by peer status seem to involve consequences for the studied subjects’ contemporary labour market opportunities.  相似文献   
157.
The research reported here consists of the introduction of an intervention based on a series of laboratory activities combined with concept mapping. The purpose of this intervention was to enhance student understanding of acid-base chemistry for tenth grade students’ from two classes in a Turkish high school. An additional aim was to enhance student attitude toward chemistry. In the research design, two cohorts of students were compared; those from the intervention group (N = 31) and a second group (N = 28) who were taught in a more traditional manner. Student understanding of acid-base chemistry was evaluated with a pretest/posttest research design using a purpose-designed instrument, the Concept Achievement Test (CAT) consisting of 25 items, 15 multiple choice and ten multiple choice with explanation. Alternative conceptions identified in the pretest were incorporated into the intervention, which thereby sought to move students toward views more in accord with scientific views for the concepts. Statistical tests indicate the instrument is reliable (with an alpha reliability of 0.81) and the analysis of the findings revealed statistically significant differences between the intervention and traditional groups with respect to conceptual understanding. Examination of student explanations and analyses of semi-structured interviews conducted with selected students suggest that the main influence was the laboratory activities. Analysis of the findings in the context of relevant literature that concept mapping in conjunction with laboratory activities is more enjoyable, helps student link concepts, and reduces their alternative conceptions.  相似文献   
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Research on journalists and journalistic work has focused on journalists with permanent, full-time employment. Given the rapid decrease of such employment opportunities, we argue that journalism research needs to pay more attention to those who those who have had to leave their jobs and either stopped doing journalism entirely, or who have switched to a freelance career (sometimes combining journalism with other work). This category of people is at once becoming more marginalized and “the new normal” within the occupation: In this paper, we furthermore focus on local (Swedish) journalists and ex-journalists. Based on a set of semi-structured interviews (n?=?12) with ex-journalists who share the experience of having lost their permanent, full-time jobs, we use the concept of livelihood as an analytical tool. The concept of livelihood highlights the shift from journalism as a job practiced exclusive of other jobs to an activity conducted alongside other income-generating activities and makes it possible to analyse leaving the occupation from a context that incorporates the whole life situation of the respondents. This also contributes to the current wave of studies of journalism and job loss by adding qualitative data about individual experiences of job loss to the existing quantitative survey evidence.  相似文献   
160.
Teachers’ leadership plays a critical and central role in students’ educational motivations. This indicates that, in the school context, a teacher’s leadership can have both positive and negative impacts on students’ educational motivation and performance. This article explores these assumptions, building on the path-goal theory, more specifically the effects of teachers’ leadership from students’ perspectives. Using a qualitative research design, this study collected data comprising 35 interviews with children and young people in both primary and upper-secondary school. The results show that the degree of teachers’ developmental leadership greatly affects students’ educational motivation and school performance. Two contrasting teachers’ profiles were found: teachers with a high degree of developmental leadership and teachers with a low degree of developmental leadership. Our findings suggest that teachers with the profile of a high degree of developmental leadership create an environment that fosters educational motivation positively among students, facilitating students’ achievement of high performance levels and a sense of well-being about their studies. In contrast, we show that teachers with a low degree of developmental leadership create an environment that is nonconductive for educational motivation, performance or the welfare of schoolwork.  相似文献   
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