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Hans Ernst Fischer Klaus Klemm Detlev Leutner Elke Sumfleth Rüdiger Tiemann Joachim Wirth 《Journal of Science Teacher Education》2005,16(4):309-349
In view of the research on education—and subject-related education in particular—that has been conducted in recent years,
it would seem useful to describe the current state and future trends of research on science teaching and learning. In the
present article, research findings are described, the deficits of science education are analyzed, and medium- and long-term
research goals are specified from the perspective of an interdisciplinary cooperative effort between specialists in the fields
of empirical educational research; the psychology of learning and instruction; and biology, chemistry, and physics education.
Revised and supplemented version of Fischer, H. E., Klemm, K., Leutner, D., Sumfleth, E., Tiemann, R., and Wirth, J. (2003).
Naturwissenschaftsdidaktische Lehr-Lernforschung: Defizite und Desiderata [Natural science-didactical learning research: Deficits
and desiderata]. Zeitschrift für Didaktik der Naturwissenschaften, 9, 179–208. 相似文献
43.
Mariam A.T.J. Mapila Jason Yauney Paul Thangata Klaus Droppelmann John Mazunda 《The Journal of Agricultural Education and Extension》2016,22(1):7-23
Purpose: The sector-wide approach currently dominates as the strategy for developing the agricultural sector of many African countries. Although recognised that collaborative agricultural research is vital in ensuring success of sector-wide agricultural development strategies; there have been few efforts to understand the dynamics of national agricultural research/development networks in Africa. This study fills this gap by analysing the dynamics of networking and interactions between institutions in the National Agricultural Research System in Malawi. Design/Methodology/Approach: The study sampled actors in the National Agricultural Research System in Malawi, which included the main public agricultural research department, academic institutions, semi-autonomous research institutions, private companies and international agricultural research institutions. Data was analysed using Social Network Analysis. Findings: Results demonstrate that public agricultural research departments play a central coordinating role in facilitating information sharing; with other actors remaining on the periphery. However, it also shows the important role other actors play to relay information to a wider network of stakeholders. These secondary information pathways can play a very crucial role in ensuring successful implementation of the national agricultural research agenda. Practical implication: Policy-makers are called upon to integrate other research actors into the mainstream national agricultural research information network. This is vital as other research actors are, at the global level, increasingly taking up a greater role in financing and disseminating research and research results. Originality/Value: The study contributes greatly towards knowledge needed for continuing the transformation of African agricultural research; and aligning the African agricultural research vision and practice with the emerging global agricultural research paradigm. 相似文献
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Klaus Pasedach und Andrea Reichel 《Informatik - Forschung und Entwicklung》1999,14(4):227-229
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Henrik S⊘rensen Morten Zacho Erik B. Simonsen Poul Dyhre‐Poulsen Klaus Klausen 《Journal of sports sciences》2013,31(6):483-495
Fast unloaded movements (i.e. striking, throwing and kicking) are typically performed in a proximo‐distal sequence, where initially high proximal segments accelerate while distal segments lag behind, after which proximal segments decelerate while distal segments accelerate. The aims of this study were to examine whether proximal segment deceleration is performed actively by antagonist muscles or is a passive consequence of distal segment movement, and whether distal segment acceleration is enhanced by proximal segment deceleration. Seventeen skilled taekwon‐do practitioners were filmed using a high‐speed camera while performing a high front kick. During kicking, EMG recordings were obtained from five major lower extremity muscles. Based on the kinematic data, inverse dynamics computations were performed yielding muscle moments and motion‐dependent moments. The results indicated that thigh deceleration was caused by motion‐dependent moments arising from lower leg motion and not by active deceleration. This was supported by the EMG recordings. Lower leg acceleration was caused partly by a knee extensor muscle moment and partly by a motion‐dependent moment arising from thigh angular velocity. Thus, lower leg acceleration was not enhanced by thigh deceleration. On the contrary, thigh deceleration, although not desirable, is unavoidable because of lower leg acceleration. 相似文献
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