Preliminary development of a questionnaire to assess peer athlete mentoring functions: the Athlete Mentoring Questionnaire (AMQ)

Using a multiphase approach, the purpose of the present study was to develop a psychometrically sound questionnaire to measure protégés’ perceptions of peer athlete mentoring functions. Phase 1 consisted of three stages: (a) item development, (b) assessment of content validity via think-aloud interviews with peer mentored athletes, and (c) assessment of content validity via an expert rating panel. In phase 2, 377 Canadian National team and varsity athletes who were peer mentored completed an initial 42-item version of the Athlete Mentoring Questionnaire (AMQ) and its factor structure was examined using confirmatory factor analysis (CFA), exploratory structural equation modeling (ESEM), and hierarchical ESEM (ESEM-within-CFA). Measurement invariance testing was also performed in phase 2. The final version of the AMQ contains 34 items that measure six peer athlete mentoring functions. It is hoped that the development of the AMQ will spur research in the emerging area of peer athlete mentoring.     

纳粹统治下的德国物理学会

1933年到1945年的德国物理学会的历史并不能完全涵盖希特勒统治下的物理学史,但它确实也反映了在第三帝国期间物理学家工作和生活的许多重要方面.     

A computational fluid dynamics model for wind simulation: model implementation and experimental validation

To provide physically based wind modelling for wind erosion research at regional scale, a 3D computational fluid dynamics (CFD) wind model was developed. The model was programmed in C language based on the Navier-Stokes equations, and it is freely available as open source. Integrated with the spatial analysis and modelling tool (SAMT), the wind model has convenient input preparation and powerful output visualization. To validate the wind model, a series of experiments was conducted in a wind tunnel. A blocking inflow experiment was designed to test the performance of the model on simulation of basic fluid processes. A round obstacle experiment was designed to check if the model could simulate the influences of the obstacle on wind field. Results show that measured and simulated wind fields have high correlations, and the wind model can simulate both the basic processes of the wind and the influences of the obstacle on the wind field. These results show the high reliability of the wind model. A digital elevation model (DEM) of an area (3800 m long and 1700 m wide) in the Xilingele grassland in Inner Mongolia (autonomous region, China) was applied to the model, and a 3D wind field has been successfully generated. The clear implementation of the model and the adequate validation by wind tunnel experiments laid a solid foundation for the prediction and assessment of wind erosion at regional scale.     

Facilitation and impairment of conditioning in the preweanling rat after prior exposure to the conditioned stimulus

Olfactory aversion conditioning of preweanling rats, 10 or 18 days postnatal, was tested after some had been given nonreinforced experience with the to-be-conditioned odor stimulus. In three experiments, it was established that the amount of prior exposure to the CS determined the effectiveness of conditioning. For both ages, odor-shock conditioning was more likely impaired with longer durations of preexposure. This effect was more apparent in the older animals. Low to moderate degrees of prior exposure to the CS under some conditions facilitated, rather than impaired, olfactory conditioning in the 10-day-old rat. This result is in agreement with one previous study in which facilitation in learning was reported for this age after short-term preexposure to the CS. The present study adds to previous data on differential effects of CS preexposure on conditioning. Although the conditions under which facilitation rather than impairment occurs are not yet clear, age-related differences in the effects of CS preexposure were apparent in the present experiments.     

Classroom behavioural climate in inclusive education – a study on secondary students’ perceptions

Previous studies pointed out that dealing with difficult behaviour is perceived by teachers as a major challenge in inclusive settings. However, research on the students' perception of the classroom behavioural climate (CBC) is rare. Therefore, this study aims to examine students’ perceptions of CBC and to identify predictors of CBC as well as associated variables. The sample consists of 650 German students from secondary schools (5th-9th grade) of whom 83 students are diagnosed with special educational needs (SEN). CBC was measured via four subscales (‘students’ possibilities to study and concentrating on teaching’, ‘disruptive behaviour’, ‘physical and psychological safety’ and ‘caring for the physical environment’). Results show significant differences in students’ perceptions of CBC between students from different school tracks. Furthermore, gender (being male) and SEN (having a) predict the perception of ‘physical and psychological safety’. Additionally, social inclusion, emotional experience as well as teacher support and care are associated with CBC. Accordingly, a positive CBC is important for the successful implementation of inclusive education: while diversity in classrooms is a challenge for behavioural climate, poor behavioural climate may also pose specific barriers to learning for some students with SEN and thus is a general challenge for equity in inclusive classrooms.     

Rethinking strategy instruction: direct reading strategy instruction versus computer‐based guided practice

There are many established reading strategy training programmes, which explicitly teach strategic and meta‐cognitive knowledge to improve reading comprehension. Although instruction in strategy knowledge leads to improvements in meta‐cognitive skills, the effects do not always transfer to reading comprehension. Therefore, to investigate preconditions for knowledge transfer, two different strategy training programmes were implemented in nine classes of Grade 6 students (N = 148) over the course of one school year. One programme involved teacher‐directed instruction of declarative meta‐cognitive knowledge (Reading Detectives; Rühl & Souvignier, 2006). The other aimed at improving executive meta‐cognition by guided practice: students worked with a computer program based on latent semantic analysis (LSA) (conText) and received immediate feedback on written summaries. Although both groups improved their strategy knowledge to the same extent, the conText group showed a greater improvement in reading comprehension. These fndings suggest that guided practice, which is characterised by intensive practice and individualised corrective feedback, is superior to explicitly teaching strategy knowledge.     

The impact of technology-push and demand-pull policies on technical change - Does the locus of policies matter?

How to foster technical change is a highly relevant and intricate question in the arena of policymaking. Various studies have shown that technology-push and demand-pull policies induce innovation. However, there is a lack of work that distinguishes between the loci of policy support when assessing the policy-innovation relationship. We address this gap by shedding light on the question how the innovation effects of domestic and foreign demand-pull and technology-push policies differ. Using solar photovoltaic modules as a research case we conduct a panel analysis on 15 OECD countries over the period 1978 through 2005 with patent data. Three key findings emerged: First, our analyses find no evidence that domestic technology-push policies foster innovative output outside of national borders. Second, both domestic and foreign demand-pull policies trigger innovative output in a country. Third, we detect no indication that market growth induced by domestic demand-pull policies leads to more national innovative output than market growth induced by foreign demand-pull policies. Consequently, demand-pull policies create significant country-level innovation spillovers, which could disincentivize national policymakers to engage in domestic market creation. Based on these findings we discuss the need to establish supranational demand-pull policy schemes in order to address the spillover issue.     

Elementary teachers' use and perception of rewards in the classroom

In the past four decades much research has gone into the use of rewards in education yet little attention has been given to the use of rewards from the perspective of teachers. This mixed method study examined how elementary school teachers define and use rewards in their classrooms and how various motivational constructs such as goal orientation, self-efficacy, and autonomy relate to teachers' use of rewards. Results revealed that all teachers in our sample use some form of rewards in their classrooms and the majority use some form of tangible rewards. Rewards were most frequently given for behaviour management, but there was a significant relationship between the use of rewards for behaviour and those given for academic achievement. Performance goal orientations for teaching were positively related to the use of tangible rewards and a higher degree of classroom control and negatively related to teacher self-efficacy. When asked to report on the appropriateness of using rewards in the classroom only one-third of the teachers reported that they should be used conditionally.