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卢文 《科教文汇》2011,(33):59-60
机械原理课程具有理论性强、概念抽象、涉及的基础理论和知识面广、系统性强等特点,在机械原理课程的学习中,引入Pro/Engineer软件进行机构仿真能够让学生牢固地掌握好机械原理这门课程。本文首先介绍在机械原理课程中引入三维CAE运动仿真的重要性,其次简介Pro/Engineer Mechanism模块的主要功能和机构运动学的工作流程,最后介绍在教学中如何运用Mechanism模块建立连杆机构的装配模型、进行仿真运动分析和获得运动轨迹和包络图等相关数据。实践证明,在机械原理教学中引入Pro/Engineer Mechanism模块进行机构运动学分析不仅能够帮助教师改善课堂教学效果和激发学生的学习兴趣,而且在优化机构、提升机构运行可靠性方面都有着十分重要的应用价值。  相似文献   
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本文针对数字图像处理课程章节多、算法复杂、学科跨度大、知识体系庞大的特点,提出了基于内容关联性的课时规划方法、基于权重的算法学习法、基于期望目标的仿真软件选择法以及关键问题多角度诠释的方法来提升教学及学习效果。实践表明,这些教学方法的实施对数字图像处理课程教学具有良好的效果和积极的现实意义。  相似文献   
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Atomic theory or the nature of matter is a principal concept in science and science education. This has, however, been complicated by the difficulty students have in learning the concept and the subsequent construction of many alternative models. To understand better the conceptual barriers to learning atomic structure, this study explores the troublesome nature of this fundamental scientific concept. In order to illustrate the distinction of student understanding by threshold barriers, this study chose three particularly high‐achieving students from an original interview sample of 20 students who were selected from an introductory college chemistry course. The pre‐course and post‐course interview responses were examined and compared in detail. This study considers the concepts of ‘probability’ and ‘energy quantization’ to both describe the structure of the threshold of understanding students’ need to negotiate in their construction of the target model of atomic structure. In this respect, this study suggests atomic structure as a possible threshold concept for further study in science. Identifying the nature and structure of the threshold of understanding confronting students, and analyzing the troublesomeness of atomic structure, provides valuable information for understanding student learning difficulties, and insight into how they may be addressed.  相似文献   
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Empathy is the combined ability to interpret the emotional states of others and experience resultant, related emotions. The relation between prefrontal electroencephalographic asymmetry and emotion in children is well known. The association between positive emotion (assessed via parent report), empathy (measured via observation), and second-by-second brain electrical activity (recorded during a pleasurable task) was investigated using a sample of one hundred twenty-eight 6- to 10-year-old children. Contentment related to increasing left frontopolar activation ( p  < .05). Empathic concern and positive empathy related to increasing right frontopolar activation ( p s < .05). A second form of positive empathy related to increasing left dorsolateral activation ( p  < .05). This suggests that positive affect and (negative and positive) empathy both relate to changes in prefrontal activity during a pleasurable task.  相似文献   
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Bourdieu's analytic concept of habitus has provided a valuable means of theorising coach development but is yet to be operationalised in empirical research. This article redresses this oversight by drawing on a larger study that inquired into how the ‘coaching habitus’ of elite-level Australian and New Zealand rugby coaches structured their interpretation and use of the Game Sense approach to coaching to illustrate how habitus can be operationalised. It focuses on the identification of characteristics of the individual coaching habitus of four elite-level Australian rugby coaches and how they shape their interpretation and use of Game Sense. Drawing on suggestions made by Lau, we identify the characteristics of four individual ‘coaching habitus’ by examining their views on: (1) the characteristics of good coaches; (2) characteristics of great rugby players and how to develop them; and (3) their dispositions towards innovation in coaching.  相似文献   
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