In Search of the Loci for Sex Differences in Throwing     

Linda J. Duffy  Anders K. Ericsson  Bahman Baluch 《Research quarterly for exercise and sport》2013,84(2):71-78

Contemporary accounts of sex differences in perceptual-motor performance differ in their emphasis on nature and nurture. Study 1 examined the effect of extensive training on one of the largest sex differences, namely accuracy in dart throwing, and found that physical differences in height and reach could not explain sex differences in regional/national level dart players. Study 2 rejected accounts of sex differences based on participation rates by showing that male players recruited from a relatively small pool of club players were superior to the best female players selected from a much larger pool at the international level. Alternative accounts of the source of sex differences in darts, based on male and female players' differential development and practice histories, are discussed.  相似文献   

The ambiguous influence of high-stakes testing on science teaching in Sweden     

Anders Jonsson  Lotta Leden 《International Journal of Science Education》2013,35(14):1926-1943

ABSTRACT

Tests convey messages about what to teach and how to assess. Both of these dimensions may either broaden or become more uniform and narrow as a consequence of high-stakes testing. This study aimed to investigate how Swedish science teachers were influenced by national, high-stakes testing in science, specifically focusing on instances where teachers’ pedagogical practices were broadened and/or narrowed. The research design is qualitative thematic analysis of focus group data, from group discussions with Swedish science teachers. The total sample consists of six teachers, who participated in 12 focus group discussion during three consecutive years. Findings suggest that the national tests influence teachers' pedagogical practice by being used as a substitute for the national curriculum. Since the teachers do not want their students to fail the tests, they implement new content that is introduced by the tests and thereby broaden their existing practice. However, when this new content is not seen as a legitimate part of teachers' established teaching traditions, the interpretation and implementation of this content may replicate the operationalisations made by the test developers, even though these operationalisations are restricted by demands for standardisation and reliable scoring. Consequently, the tests simultaneously broaden and narrow teachers’ pedagogical practices.  相似文献   

Multilingual students’ use of translanguaging in science classrooms     

Annika Karlsson  Pia Nygård Larsson  Anders Jakobsson 《International Journal of Science Education》2013,35(15):2049-2069

ABSTRACT

This study describes multilingual students’ authentic use of their first and second languages in a translanguaging science classroom, from a sociocultural perspective. The study is ethnographic, and has followed some lessons each month in a translanguaging science classroom at a primary school for three years. The observed lessons were documented by four video cameras and four audio recorders, while field notes and different types of students’ texts and other teaching materials were also collected. In order investigate how language operates, and to realise the meaning semantically, we analysed the students’ use of both first and second language to tie paradigmatic relations, and how they move in linguistic loops between languages and discourses. The results illustrate the ways in which a translanguaging science classroom constitutes a resource in joint negotiations of the scientific content and its related language for multilingual students, and benefits the students’ ability to relate and contextualise the science content to prior experience. The creation of translanguaging science classrooms, in which students’ experiences and diverse cultural and linguistic resources interweave with school science, and in which multilingual students are enabled and encouraged to use all available language resources, has important implications for science education.  相似文献   

Educational Evaluation A Basis for,or a Legitimation of,Educational Policy 1     

Ulf P. Lundgren 《Scandinavian Journal of Educational Research》2013,57(2):31-45

Lundgren, U. P. 1979. Educational Evaluation. A Basis for, or a Legitimation of, Educational Policy. Scandinavianjoumal of Educational Research 2), 31‐45. The article is written as a basis for a discussion on the function and purpose of educational evaluation. The main standpoint is that different approaches for educational evaluation are presented as scientific improvements, but mirror mainly the objective functions of education in the society and the need within the state apparatus for a scientific legitimation of various political decisions. From that notion, arguments are developed for a wider interpretation of educational evaluation‐based theories on the relation between education, the state apparatus, and the society oriented critical research.

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Occupational transitions as a relational project     

Anders Hallqvist 《Studies in Continuing Education》2013,35(2):83-98

Looking at ‘biographical learning’ as part of a work transition, the aim of this paper is to investigate how social relations enable and constrain such a learning process in outplacement clients. To examine the process, its character and social conditions, the study draws on interviews with workers who had been made redundant and were enrolled at an outplacement agency. The interviews were analysed using a comparative cross-case analysis. A distinction was made between ‘strong’ (long-term and intimate), ‘weak’ (short-term and non-intimate) and ‘formal’ (e.g., professional counsellors) relations. Findings showed that strong and formal relations were rather influential on people's engagement in biographical learning while weak relations were important to the straightforward career. Since transitions in late modern society has become not only a passage but also a learning option, the different sources and functions of social relations should be considered a vital part of outplacement counselling. Future research should examine more closely both parties in strong relationships and the (joint) process of career decision-making inherent in occupational transitions.  相似文献   

COMPARE Forum: The idea of North-South and South-South collaboration     

Halla B. Holmarsdottir  Zubeida Desai  Louis Royce Botha  Anders Breidlid  Ms. Sheri Bastien  Wanjiru Mukoma 《Compare》2013,43(2):265-286

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Religious education and intercultural understanding: examining the role of religiosity for upper secondary students’ attitudes towards RE     

Anders Sjöborg 《British Journal of Religious Education》2013,35(1):36-54

Recent studies show that religious education (RE) may play an important role for teaching intercultural understanding in many Western societies facing increased cultural and religious pluralism. Quantitative and qualitative research have however failed to examine what role the religiosity of the students plays in their attitudes towards RE. A nationally representative Swedish sample of 1850 students answered a classroom questionnaire. The main result was that, when controlling for background variables such as gender, foreign background, parents’ education level and study programme, the students’ religiosity had a significant effect on their attitudes towards (a) existential issues, (b) preferences on what to study in RE as well as (c) incentives for studying RE. Regression analyses demonstrated that by entering individuals’ religiosity into the model the effect of foreign background was suspended in 11 out of 14 cases. In order to understand the attitude towards RE, it is useful to include the students’ religiosity. As a consequence, this article argues that in order to reach the citizenship goals of educating for intercultural understanding in RE, the subject should be developed to reach male students, students with parents with lower levels of education, students in vocational study programmes and students who are not religious.  相似文献   

Automated impact device with non-synchronous impacts: a practical solution for modal testing during operation     

Zhi Chao Ong  Hong Cheet Lim  Anders Brandt 《浙江大学学报(A卷英文版)》2018,19(6):452-460

Previous study has shown that synchronization of phases between impacts and the cyclic load component should be avoided to improve the effectiveness of operational modal testing, i.e. impact-synchronous modal analysis in obtaining a cleaner frequency response function (FRF) estimation with fewer number of averages. However, avoiding the phase synchronization effect is rarely achievable with the current manual impact hammer because of the lack of control of the impact timing. We investigate how to improve FRF estimation in the presence of harmonic disturbances, such as those present in operating rotating machines. An auto impact device is therefore introduced to replace the manual impact hammer. This device ensures that impact intervals can be applied at non-synchronous instances with respect to the harmonic disturbance. We demonstrate that this new device is a viable option for operational modal testing. It allows significant improvement in FRF estimation and shows good correlation of modal extraction data with benchmark experimental modal analysis results.  相似文献   

Young,talented and injured: Injury perceptions,experiences and consequences in adolescent elite athletes     

Philip Von Rosen  Anders Kottorp  Cecilia Fridén  Anna Frohm  Annette Heijne 《European Journal of Sport Science》2018,18(5):731-740

Even though injury is common in elite sports, there is still a lack of knowledge of young athletes’ injury perception both during and after injury. The aim of this mixed-method study was, therefore, to explore, in-depth, data on injury consequences and adolescent elite athletes’ perceptions and experience of injury. Three hundred and forty adolescent elite athletes (age range 15–19), from 16 different sports, were bi-weekly monitored over 52 weeks using a valid questionnaire. Twenty athletes from the same cohort were interviewed in focus groups about injury experience and perceptions. The results show that the average bi-weekly prevalence of injury was 38.7% (95% CI 37.3–40.1), with 30.0% (n?=?102) of the athletes injured for more than half of all reporting times. An overarching theme from the focus groups highlighted the risk among young athletes of a loss of identity while injured. The findings support several suggestions that may improve the rehabilitation process and enhance rehabilitation outcomes: (a) provide clear pathways to the medical team, (b) recognize the identity loss, (c) involve the injured athletes with the rest of the teammates and (d) educate athletes about how to interpret pain signals. Future research should explore and evaluate the effectiveness and generalization of such interventions.  相似文献   

Effects of wearing lower leg compression sleeves on locomotion economy     

Eduard Kurz  Christoph Anders 《Journal of sports sciences》2018,36(18):2105-2110

The purpose of this investigation was to assess the effect of compression sleeves on muscle activation cost during locomotion. Twenty-two recreationally active men (age: 25 ± 3 years) ran on a treadmill at four different speeds (ordered sequence of 2.8, 3.3, 2.2, and 3.9 m/s). The tests were performed without (control situation, CON) and while wearing specially designed lower leg compression sleeves (SL). Myoelectric activity of five lower leg muscles (tibialis anterior, fibularis longus, lateral and medial head of gastrocnemius, and soleus) was captured using Surface EMG. To assess muscle activation cost, the cumulative muscle activity per distance travelled (CMAPD) of the CON and SL situations was determined. Repeated measures analyses of variance were performed separately for each muscle. The analyses revealed a reduced lower leg muscle activation cost with respect to test situation for SL for all muscles (p < 0.05, η_p² > 0.18). The respective significant reductions of CMAPD values during SL ranged between 4% and 16% and were largest at 2.8 m/s. The findings presented point towards an improved muscle activation cost while wearing lower leg compression sleeves during locomotion that have potential to postpone muscle fatigue.  相似文献