The role of preparatory heart rate deceleration on balance beam performance     

Cottyn J  de Clercq D  Crombez G  Lenoir M 《运动与训练心理学杂志》2008,30(2):159-170

Preparatory heart rate deceleration occurs in tasks with an external focus of attention and is often assumed to facilitate balance performance. However, its effects upon sport-related complex balance movements have not been studied. Heart rate patterns during the preparation period of an acrobatic element (flic-flac) on the balance beam were studied in 14 female gymnasts (M age 13.2 years). A significant heart rate deceleration was found in attempts with a fall in the consecutive acrobatic element, but not in attempts without a fall. These data suggest that preparatory heart rate deceleration may be detrimental to the performance of complex movements on the balance beam.  相似文献   

Ethnicity, Forms of Capital, and Educational Achievement     

Geert W. J. M. Driessen 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2001,12(4):513-538

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Quantifying external focus of attention in sailing by means of action sport cameras     

Joost P. Pluijms  Rouwen Cañal-Bruland  Marco J.M. Hoozemans  Morris W. Van Beek  Kaj Böcker  Geert J.P. Savelsbergh 《Journal of sports sciences》2016,34(16):1588-1595

The aim of the current study was twofold: (1) to validate the use of action sport cameras for quantifying focus of visual attention in sailing and (2) to apply this method to examine whether an external focus of attention is associated with better performance in upwind sailing. To test the validity of this novel quantification method, we first calculated the agreement between gaze location measures and head orientation measures in 13 sailors sailing upwind during training regattas using a head mounted eye tracker. The results confirmed that for measuring visual focus of attention in upwind sailing, the agreement for the two measures was high (intraclass correlation coefficient (ICC) = 0.97) and the 95% limits of agreement were acceptable (between ?8.0% and 14.6%). In a next step, we quantified the focus of visual attention in sailing upwind as fast as possible by means of an action sport camera. We captured sailing performance, operationalised as boat speed in the direction of the wind, and environmental conditions using a GPS, compass and wind meter. Four trials, each lasting 1 min, were analysed for 15 sailors each, resulting in a total of 30 upwind speed trials on port tack and 30 upwind speed trials on starboard tack. The results revealed that in sailing – within constantly changing environments – the focus of attention is not a significant predictor for better upwind sailing performances. This implicates that neither external nor internal foci of attention was per se correlated with better performances. Rather, relatively large interindividual differences seem to indicate that different visual attention strategies can lead to similar performance outcomes.  相似文献   

Measuring Young People's Citizenship Competences     

Geert ten Dam  Femke Geijsel  Rene Reumerman  Guuske Ledoux 《European Journal of Education》2011,46(3):354-372

Citizenship has recently been introduced into the educational curriculum. Instruments to determine the effects of citizenship education are scarce. In this article, the concept of citizenship competences is explored in order to develop a measurement instrument. Four social tasks were derived from the literature as representative of young people's citizenship practices: acting democratically, acting in a socially responsible manner, dealing with conflicts, and dealing with differences. What adequate fulfilment of each social task presupposes in terms of knowledge, attitudes, skills, and reflection is defined per task and operationalised into items for a questionnaire. The sample (N = 16,000) concerns a representative sample of students in grade 6 and grade 9. Confirmatory factor analyses were conducted to determine the extent to which the structure in the data corresponded to the structure expected on theoretical grounds. The study reveals a reliable and valid instrument for the measurement of young people's citizenship competences. Future research should provide insight into how these competences relate to citizenship behaviour and whether measures of citizenship competences and behaviour will help schools to evaluate the effectiveness of their efforts.  相似文献   

Stimulating professional learning through teacher evaluation: An impossible task for the school leader?     

Melissa Tuytens  Geert Devos 《Teaching and Teacher Education》2011,27(5):891-899

Providing effective feedback through teacher evaluation is a complex task for the school leader. Many authors state that teacher evaluation does not contribute to teachers’ professional learning. Few studies focus on the specific leadership variables that contribute to effective teacher evaluation. This study explores the importance of transformational and instructional leadership for the feedback utility and teachers’ professional learning. The results of regression and path analyses showed that leadership directly influences the feedback utility and indirectly influences teachers’ professional learning. This study demonstrates the importance of school leadership for effective teacher evaluation and highlights its usefulness for teachers’ professional learning.  相似文献   

A Complexity Approach Toward Mind–Brain–Education (MBE); Challenges and Opportunities in Educational Intervention and Research          下载免费PDF全文

Henderien W. Steenbeek  Paul L. C. van Geert 《Mind, Brain, and Education》2015,9(2):81-86

In the context of an educational or clinical intervention, we often ask questions such as “How does this intervention influence the task behavior of autistic children?” or “How does working memory influence inhibition of immediate responses?” What do we mean by the word influence here? In this article, we introduce the framework of complex dynamic systems (CDS) to disentangle the meaning of words such as influence, and to discuss the issue of education and intervention as something that takes place in the form of complex, real‐time, situated processes. What are the applied implications of such a CDS framework? Can we use it to improve education? Five general principles—process laws—are introduced, which can be used to guide the way we formulate research questions and methods, and the way we use the results of such research. In addition, we briefly discuss a project in progress, in which we ourselves attempt to apply the process laws that govern educational activities. Finally, we report about a discussion about the usability of the process laws, both in educational research and in the classroom, as was held during our workshop at the Mind, Brain, and Education Conference, November 2014.  相似文献   

Prediction of vibrations induced by trains on line 8 of Beijing metro   总被引：1，自引：0，他引：1  

Shashank GUPTA  Geert LOMBAERT  Geert DEGRANDE 《浙江大学学报(A卷英文版)》2010,11(4):280-293

This paper mainly discusses the problem of ground-borne vibrations due to the planned line 8 of Beijing metro which passes under the National Measurement Laboratory. A lot of vibration sensitive equipments are placed in the laboratory. It is therefore necessary to study the impact of vibrations induced by metro trains on sensitive equipments and important to propound a feasible vibration mitigation measure. Based or1 the coupled periodic finite element-boundary element （FE-BE） method, a 3D dynamic track-tunnel-soil interaction model for metro line 8 has been used to predict vibrations in the free field induced by trains running at variable speeds between 30 km/h and 80 km/h. Four types of track structures commonly used on the Beijing metro network have been considered： （1） high resilience direct fixation fasteners, （2） Vanguard fasteners, （3） a floating slab track and （4） a floating ladder track. For each of these track types, the vibration isolation efficiency has been compared. The results of the numerical study can be used to predict vibrations in nearby buildings and to decide upon effective vibration countermeasures.  相似文献   

Pediatric cochlear implantation: a qualitative study of parental decision-making processes in Flanders, Belgium     

Hardonk S  Bosteels S  Desnerck G  Loots G  Van Hove G  Van Kerschaver E  Vanroelen C  Louckx F 《American annals of the deaf》2010,155(3):339-352

Factors contributing to parents' decision when they choose between cochlear implantation (CI) and traditional hearing aids for their child were examined. The subjects were children with severe/profound hearing loss, born 1999-2001, registered in the universal neonatal hearing screening program in the Flanders region of Belgium. Qualitative data collected retrospectively from parents were subjected to thematic content analysis. In their responses to professional advice, parents were segmented into 3 groups: (a) those whose primary considerations were the importance of oral language development and the relative potential of CI and traditional hearing aids; (b) those for whom alternative factors (e.g., medical risks, ethical issues) were paramount, even in the face of professional advocacy of CI; (c) those who followed professional advice against CI. The researchers conclude that care professionals should be sensitive to the impact of their advice and other factors in parental decision making.  相似文献   

Teacher education and the choice to enter the teaching profession: A prospective study     

Isabel Rots  Antonia Aelterman  Geert Devos  Peter Vlerick   《Teaching and Teacher Education》2010,26(8):1619-1629

This two-wave survey study aimed at testing a hypothetical model of teacher education graduates’ decisions about whether or not to take a teaching position upon graduation. The model focuses on the relationship between teacher education and graduates’ choice on job entrance. Using path analysis and logistic regression, this model was tested in a sample of student teachers (n = 436), subsequently graduates (n = 251) of teacher training for secondary education. The results validate the relationship between teacher education variables and nearly graduates’ intention to enter the teaching profession. Furthermore, this intention proves an imperative predictor of graduates’ actual entrance.  相似文献   

How distributed leadership can make a difference in teachers' organizational commitment? A qualitative study     

Hester Hulpia  Geert Devos 《Teaching and Teacher Education》2010

The present study explores the relation between distributed leadership and teachers' organizational commitment. Semi-structured interviews with teachers and school leaders of secondary schools were conducted. A comparative analysis of four schools with high and four schools with low committed teachers was carried out. Findings revealed differences in the leadership practices which influenced organizational commitment. The leadership practices include the quality and distribution of leadership functions, social interaction, cooperation of the leadership team, and participative decision-making. Teachers reported being more strongly committed to the school if the leaders were highly accessible, tackled problems efficiently or empowered teachers to participate, and frequently monitored teachers' daily practices.  相似文献