数字图像处理课程教学方法研究

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。     

基于Pro/Engineer机构运动分析在机械原理课程中的运用

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。     

The contribution of morphological awareness to reading comprehension in Arabic-speaking second graders

Reading and Writing - We examined the longitudinal contribution of awareness of inflections and derivations to reading comprehension in Arabic, a morphologically rich language, among 734 second...     

Empathy Is Associated With Dynamic Change in Prefrontal Brain Electrical Activity During Positive Emotion in Children

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.     

Universal and language-specific constraints on phonemic awareness: evidence from Russian–Hebrew bilingual children

The study tested phonemic awareness in the two languages of Russian (L1)–Hebrew (L2) sequential bilingual children (N = 20) using phoneme deletion tasks where the phoneme to be deleted occurred word initial, word final, as a singleton, or part of a cluster, in long and short words and stressed and unstressed syllables. The experiments were designed to test the effect of four linguistic factors on children’s phoneme deletion: phoneme position (initial, final), linguistic context (singleton, cluster), word length and stress. The results indicated that word length and stress confirmed previous findings in other languages demonstrating the universal validity of these factors. However, phoneme position and linguistic context gave rise to novel findings in the languages studied and provided evidence for language-specific effects on phonemic awareness reflecting onset-rime versus body-coda syllable structure differences. The results are discussed within the framework of universal versus language-specific constraints on phonemic awareness performance in different languages.