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61.
62.
Gervais P Dunn J 《Sports biomechanics / International Society of Biomechanics in Sports》2003,2(1):85-101
The purpose of this study was to identify those mechanical determinants or their trends that distinguished a gymnast's best performance of the double back salto dismount on parallel bars from those judged to be inferior. Dismounts, in the tucked position, by nine Canadian gymnasts were analysed. Unique to this study was the inclusive analysis of multiple performances of the same skill by these athletes. It was felt that within-subject comparisons would reveal the kinematic variables on which the gymnast may focus in order to achieve their best performances. A non-parametric median sign test was used to compare mechanical variables, within subjects, between the dismount judged the best and those dismounts awarded a lower score. Three judges judged each dismount. In comparison to poorer performances of the dismount, statistical analyses revealed that athlete's best performances were characterised by (1) a higher release point, more vertical velocity yet with less angular momentum at take-off, (2) greater height, with a tighter and earlier tuck position during the flight phase, and (3) a greater range of motion and a more compact squat position at landing (all p's < .06). 相似文献
63.
An account is given of the first EuroScience Open Forum and specifically of a symposium within it on the publication of scientific research. The scene‐setting presentations and the summary of the discussions are set out. 相似文献
64.
Thomas p. Hughes Pierre Papon Keith Pavitt John Ziman Michael J. Moravcsik 《Minerva》1979,17(4):555-573
65.
Pierre Touzard Richard Kulpa Benoit Bideau Bernard Montalvan Caroline Martin 《European Journal of Sport Science》2019,19(6):765-773
Waiter’s serve (WS) is a specific tennis serve posture frequently observed in young players, and commonly considered as a technical error by tennis coaches. However, biomechanical impact of WS is unknown. The aims of this study were to identify the potential consequences of WS in young elite players relating to performance and injury risk, and to explain the kinematic causes of WS. Serve of 18 male junior elite players (Top 10 national French ranking, aged 12–15 years) was captured with a 20 camera, 200?Hz VICON MX motion analysis system. Depending on their serve technique, the players were divided into two groups (WS versus Normal Serve [NS]) by experienced coaches. Injury data were collected for each player during a 12-month-period following the motion capture. Normalized peak kinetic values of the dominant arm were calculated using inverse dynamics. In order to explain WS posture, upper limb kinematics were calculated during the cocking and the acceleration phases of the serve. Shoulder internal rotation torque, wrist proximal and anterior forces (P?.05) and elbow varus torque (P?.01) were significantly higher in WS group, with no difference from NS group concerning serve velocity. Moreover, significant lower shoulder abduction and higher wrist extension (P?.05) were observed for WS players during the cocking phase. Even if no significant difference was found between groups concerning injuries, higher upper limb joint loads suggested WS could be considered as pathomechanical in young elite players and could lead to upper limb joint injuries. 相似文献
66.
67.
Pierre Laffitte 《European Journal of Engineering Education》1981,6(1-2):31-34
In France, there are more than 150 engineering schools, training 11,000 engineers per year. If we add to these the schools of management of a comparable standard, we get the figure of 16,000 highly trained personnel per year. 相似文献
68.
Jean‐Pierre Massué 《Higher Education in Europe》1990,15(1):23-29
This article outlines the activities of the Council of Europe in favour of inter‐university co‐operation and exchange. First, the role and tasks of the CC‐PU and then the work programme of the Council of Europe on higher education and research are examined. With regard to academic mobility and European inter‐university co‐operation, the Transfrontier Regional University Co‐operation Programme, the European Postgraduate Training Programme, and the Inter‐university Co‐operation Programme between Europe and Latin America are described. Finally, both the European Networks for Scientific and Technical Co‐operation and the Open Partial Agreement on the Prevention of, Protection Against, and Organisation of Relief in Major Natural and Technological Disasters and their constituent activities are evoked. 相似文献
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70.
Essegbemon Akpo Todd A. Crane Pierre V. Vissoh Rigobert C. Tossou 《The Journal of Agricultural Education and Extension》2015,21(4):369-388
Purpose: Changing research design and methodologies regarding how researchers articulate with end-users of technology is an important consideration in developing sustainable agricultural practices. This paper analyzes a joint experiment as a multi-stakeholder process and contributes to understand how the way of organizing social learning affects stakeholders’ ownership of process outcomes. Design/Methodology/Approach:A learning group composed of the different stakeholders of the oil palm seed system in Benin was set around a joint experiment. We use a detailed account of the group dynamics to understand the social process. Findings: The way the process is designed and conducted has a great effect on the ownership by the participants. Methodological steps taken in this research process showed its efficacy to produce quick and positive feedback mechanisms. Stakeholders’ perspectives on what constitutes a quality oil palm seedling varied widely. Participants, mainly nursery holders, learned new production practices. Representatives of the research center learned a mismatch of recommendations with users’ contexts. Field observations further to the process indicate changes in practices among stakeholders that would be sustainable. Practical Implications: Beyond focusing on outcomes, initiatives in multi-stakeholder processes should also document and analyze social processes in order to better understand the mechanisms by which such processes foster socio-technical change, as well as identify potential institutional barriers to such processes. Originality/Value: Through a detailed analysis of group dynamics, this paper addresses an important knowledge gap in participatory agricultural development. 相似文献