排序方式： 共有49条查询结果，搜索用时 15 毫秒
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Roman Farana Gerda Strutzenberger Timothy Exell Jiri Skypala Huw Wiltshire Gareth Irwin 《Journal of sports sciences》2019,37(13):1449-1456
The aim of the study was to determine if sex differences exist in the key elbow and wrist joint injury risk factors during different cartwheel (CW) and round-off (RO) techniques performed by young male and female artistic gymnasts. Sixteen active young gymnasts (8 males and 8 females) performed 30 successful trials of CW and RO with three different hand positions (parallel (10), T-shape (10) and reverse (10)). Synchronised kinematic and kinetic data were collected for each trial. Two-way repeated measures ANOVA (3 × 2, technique × sex) and effect-sizes (ES) were used for statistical analysis. In conclusion, female gymnasts exhibited greater normalised peak vertical ground reaction forces (VGRF), elbow and wrist compression forces and elbow internal adduction moments during CW and RO skills compared with male gymnasts. In both sexes, the parallel and reverse techniques increased peak VGRF, elbow and wrist compression forces and the elbow internal adduction moment. Increased elbow flexion resulted in decreased peak VGRF, elbow compression forces and elbow internal adduction moment. Injury risk factors including elbow extension and internal adduction moment with axial compression force suggest that a CW and RO in reverse and parallel techniques can be hazardous especially for young female gymnasts. 相似文献
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Michael Christie Hetty Grunefeld Gerda Thibautt 《European Journal of Engineering Education》2001,26(4):441-450
This article argues that the increase in the number of teaching and learning centres in universities of technology in recent years is bound up with concerns about the quality of university education. Universities that have set up such centres have been motivated to do so for two main reasons. They are keen to improve the image and the capacity of their teaching faculty. They also hope to attract students at a time when many school leavers prefer immediate, well-paid employment to four or more years of study. There has been outside pressure as well. Governments have demanded that tertiary institutions become more accountable. Governments are insisting that taxpayers get value for their money, especially in the area of teaching and learning. The question asked in this article is whether or not teaching and learning centres should be modelling quality issues as well as teaching and learning issues. Our conclusion is that the centres should be proactive in this matter, providing their institution with both theoretical and practical models of quality management and assurance. 相似文献
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Gerda Strutzenberger Tobias Wunsch Josef Kroell Jacqueline Dastl Hermann Schwameder 《Sports biomechanics / International Society of Biomechanics in Sports》2014,13(2):97-108
Non-circular chainrings theoretically enhance cycling performance by increasing effective chainring diameter and varying crank velocity, but research has failed to consistently reproduce the benefits in cycling trials. The aim of this study was (1) to investigate the effect of different chainring shapes on sagittal knee joint moment and sagittal lower limb joint powers and (2) to investigate whether alterations are affected by cadence and workload. Fourteen elite cyclists cycled in six conditions (70, 90 and 110 rpm, each at 180 and 300 W), for 2 min each, using three chainrings of different ovalities (1.0–1.215). Kinematic data and pedal forces were collected. For most conditions, only the chainring with the highest ovality (1.215) was characterised by smaller sagittal knee joint moments, smaller relative sagittal knee joint power contribution and larger relative sagittal hip joint power contribution, which suggests a change from maximising efficiency to maximising power production. Effect sizes increased with higher cadences, but not with higher workload. This study has application for athletes, clinicians and sports equipment industry as a non-circular chainring can change joint-specific power generation and decrease knee joint moment, but certain ovality seems to be necessary to provoke this effect. 相似文献
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Gerda Hanko 《British Journal of Special Education》2003,30(3):125-131
The inclusion debate is no longer concerned merely with the extent to which mainstream schools are able to accommodate all children regardless of need but increasingly focuses on institutional improvement in understanding the range of their needs. In spite of our better understanding of how children learn and of how their emotional and social realities can be used as a source of learning that is relevant to the needs of all, 'difficult' children continue to be seen by many as impeding their teachers' pedagogical effectiveness and as damaging the educational chances of others. In this article, Gerda Hanko, an education consultant and staff development tutor who has substantial experience in teaching and teacher training, offers an overview of the development of practical approaches to professional development which, by deepening teachers' insight into emotional and social factors in children's learning, have been shown to supersede the need to exclude the disaffected — as already suggested in the Elton Report. Gerda Hanko's own publications, initially developed under the auspices of a London Institute of Education associateship when she was Head of Education at a teacher training institution, promote collaborative problem-solving approaches among staff — ideas that she takes forward in this paper. 相似文献
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叶子 《语数外学习(初中版)》2008,(4):1-1
晨月圆圆,金光灿烂,悬挂在雾霭蓝天上;高耸白杨独自摇晃,鸟鸣声声起伏不断,四月的第一天,朋友!在这愚人的四月,月亮闪着金光,如小巧温柔的太阳。The morning moon is round and goldUp in the misty milk-blue sky;The towering poplar sways alone;The birds are shouting one 相似文献
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Mark A. A. M. Leenders Joyce van Telgen Gerda Gemser Richard Van der Wurff 《媒体管理杂志》2013,15(3-4):148-157
Nowadays, music festivals are very important for generating revenue streams in the music industry. However, studies on what makes music festivals a success are scant. In this article, a conceptual model to explain the success of music festivals is introduced and tested. Such a model seems pressing now that competition in the music festival industry is increasing. Our conceptual model includes variables that are under the control of music festival organizers, namely format and content characteristics. The content features include scope of the audience, lineup, age, and having a theme or message. Budget, ticket price, location, and having a maximum visitor capacity make up the format features. The model is tested with data from 47 music festivals in the Netherlands. The results show that relatively newer festivals can achieve good growth in terms of visitor attendance, especially if they have a narrow scope (niche). Interestingly, this is true for both large and small festivals. Our findings are important with respect to music festival diversity and choice for audiences, which may be at risk due to increasing competition. The fact that several festivals have a capacity constraint seems to be beneficial for diversity as well. Interestingly, budgets (and star lineup and ticket price), theme, and location are largely nonsignificant predictors of success. 相似文献
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