固体材料导热系数的分子动力学模拟

采用分子动力学方法对金属和非金属材料薄膜的导热系数进行数值模拟. 非金属材料氩的粒子间相互作用势采用12/6 L-J势能模型,金属材料钨使用MEAM势能模型. 模拟结果表明,非金属材料氩的导热系数与已有实验结果符合较好,但金属材料钨的导热系数结果较实验结果小1~2个数量级. 研究结果表明,引入自由电子导热模型能较准确预测金属材料钨的导热系数变化规律.     

金融危机前后C5航线远期运费波动溢出效应比较

基于远期运费协议(Forward Freight Agreement,FFA)市场与干散货运输实体市场间的波动溢出关系对正确评价FFA市场的效率及企业是否参与该市场的决策具有重要意义.用AR,VAR和VEC所提取的均值方程残差作为溢出因子代入GARCH和EGARCH波动方程中,以考察C5航线在金融危机前后波动溢出效应的变化.主要的实证结论:该航线的远期和即期存在双向波动溢出;远期对即期的波动溢出在金融危机后获得加强;远期的当期残差在各阶段的溢出强度远远高于滞后一期的残差,说明当天的远期信息深度影响着当天的即期实体市场。     

《经济学》案例教学体系探析

近些年来,我国的经济学案例教学虽然取得了一些进展,但在教材内容建设、师资培养以及案例教学地位的把握等方面仍存在诸多问题。为解决这些问题,需要在了解案例教学渊源和发展脉络的基础上,从更新传统教学观念、教学方法入手,通过加强案例教学的主、客体资源建设来全面提升《经济学》的教学效果。     

大型体育赛事媒介传播效果的层次与评估指标研究

基于媒介传播效果理论,对大型体育赛事媒介传播效果的概念进行界定.从心智模式视角分析大型体育赛事媒介传播效果形成的心理机制;将大型体育赛事媒介传播效果分为浅层、中层、次深层及深层传播效果.基于以上分析,提出由媒介传播、受众效果、经济效果、社会效果和负面效果等组成的大型体育赛事媒介传播效果评估指标.     

高水平职业篮球赛季准备期力量训练新探

通过对2010-2011年度江苏同曦男篮冬训期间力量训练分析,针对江苏同曦男篮备战2011赛季NBL联赛的比赛任务、力量训练内容、训练方法和手段、训练安排、训练负荷、训练效果的检验、分析和探讨,总结高水平职业篮球队其力量训练的特征,为我国职业篮球队伍力量训练提供一定的参考依据。     

Assessing students’ learning about fundamental concepts of climate change under two different conditions

Students from three different British Columbia grade six classes were followed through two weeks of instruction on climate change. Pre, post, and follow-up surveys were used to determine the differences in knowledge gained and retained by students that received direct instruction from their science teacher, and by those who received equivalent content instruction from outside presenters. The teacher participant also completed a survey on her experience with the researcher-designed lesson plans. Students’ results on the surveys were compared to results from a control group with no intervention. The teacher-based setting resulted in significantly higher knowledge gain, although no difference was found between the groups’ rate of knowledge decline thereafter. Highest gains in knowledge were for the carbon cycle and the human impacts topic, followed by understanding the difference between climate and weather. The students and teacher alike appeared to struggle with the topic of global warming and the greenhouse effect. The research suggests that with the appropriate background information the classroom teacher is likely to be more effective at conveying the science of climate change, particularly when it is taught through an understanding of the carbon cycle and its human impacts. It also suggests that those non-governmental organizations engaged in climate change education might be better served by investing their limited resources in the development of learning materials and subsequent professional development for teachers rather than focusing on in-school presentations.     

唐诗以数字入诗的艺术技巧

诗歌是一种喜闻乐见的文学形式。诗歌的创作主要依靠形象思维,而数字恰恰是单调乏味的,似乎与形象二字相距甚远。然而,在我国古典诗歌中,诗人们却将这些看似枯燥乏味的数字嵌入诗中,使之韵味无穷、情趣陡增。唐诗是我国古典诗歌艺术的最高峰,其创作技巧千姿百态,数字入诗便是其中之一。本文从创作方式和艺术效果两方面对唐诗以数字入诗的艺术技巧作一点浅陋的分析。     

创设教学情境、优化体育课教学

为进一步优化课堂教学,在参考有关文献及结合多年的教学经验.对教学情境等问题进行了研究,其结果表明:体育教学情境的创设,有利于体育知识的传播,为学生创造了良好的学习环境,学生在享受美的同时,掌握了锻炼身体的本领.建议:教师要努力提高自己的专业水平,要有爱业敬业的精神.     

体育舞蹈教学中的音乐选择及其作用

音乐在体育舞蹈教学中具有极其重要的作用,它可以激发人的情感,并对舞蹈动作的设计编排起着诱导作用.正确选择音乐能够帮助学生达到良好的锻炼效果.     

运用学生造型示范进行武术教学的研究

采用实验研究法，对运用学生造型示范进行武术教学的效果进行研究。结果表明，与传统的教学方法相比，学生造型示范法既能突出重点，加快学生对动作的理解，活跃课堂气氛，提高学生学习兴趣，培养学生分析问题、解决问题的能力，又能减轻教师劳动强度。