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排序方式： 共有281条查询结果，搜索用时 15 毫秒
61.
Cyril Rebetez Mireille Bétrancourt Mirweis Sangin Pierre Dillenbourg 《Instructional Science》2010,38(5):471-485
Animated graphics are extensively used in multimedia instructions explaining how natural or artificial dynamic systems work.
As animation directly depicts spatial changes over time, it is legitimate to believe that animated graphics will improve comprehension
over static graphics. However, the research failed to find clear evidence in favour of animation. Animation may also be used
to promote interactions in computer-supported collaborative learning. In this setting as well, the empirical studies have
not confirmed the benefits that one could intuitively expect from the use of animation. One explanation is that multimedia,
including animated graphics, challenges human processing capacities, and in particular imposes a substantial working memory
load. We designed an experimental study involving three between-subjects factors: the type of multimedia instruction (with
static or animated graphics), the presence of snapshots of critical steps of the system (with or without snapshots) and the
learning setting (individual or collaborative). The findings indicate that animation was overall beneficial to retention,
while for transfer, only learners studying collaboratively benefited from animated over static graphics. Contrary to our expectations,
the snapshots were marginally beneficial to learners studying individually and significantly detrimental to learners studying
in dyads. The results are discussed within the multimedia comprehension framework in order to propose the conditions under
which animation can benefit to learning. 相似文献
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Jeremy Kilpatrick Edmund King Pierre Ferran Nicolas Hans A. Harry Passow Graeme Kemelfield Eric Ashby Mark Blaug Franklin Parker F. Walz Fritz Borinski Russell F. Farnen Robert F. Lawson Horst Magdeburg Robert J. Havighurst David A. Walker Alexandre Vexliard Josef Havlíček Otto Peters Hans Tutken M. A. Boisard George Z. F. Bereday 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1969,15(1):83-120
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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
69.
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
70.
Thomas p. Hughes Pierre Papon Keith Pavitt John Ziman Michael J. Moravcsik 《Minerva》1979,17(4):555-573