论化学师范生教学实践能力的结构——基于实证研究

教学是实践的艺术,合格的师范生不仅要具备一定的专业水平,还要有较高的实践素养。结合PCK理论和调查的结果,化学师范生的教学实践能力可分为舞台表现力、心理教育能力、研究能力、互动能力、技术能力和化学实验6个要素。这六个要素共同构成了师范生实践教学能力的SPRITE模型。一项以毕业班学生为研究对象的调查证实了该模型的有效性。     

Impact of a Simulated Stress Training Program on the Tactical Shooting Performance of SWAT Trainees

ABSTRACT

Purpose: To create a high-stress shooting among the crowd (SAC) program and to examine its effectiveness in reducing SWAT trainees’ stress level and their shooting performance in a simulated hostage-rescue situation. Method: After the SAC program was created, it was evaluated using a pretest and posttest experimental design: 98 young male SWAT trainees were randomly divided into experiment and control groups, with the former group trained in hostage rescue, shooting with real persons (high stress), and the latter group trained with “dummy” men (low stress); training for both lasted three days. Their shooting performance was assessed by a tactical shooting test in both high- and low-stress tests in a counterbalanced order, before and after the training, and monitored during the training, as were their stress levels by a set of physical (heart rate [HR] and heart rate recovery time [HRRt]), psychological (salivary cortisol and α-amylase), and self-reported anxiety measures. Results: The SAC program created needed high-stress for hostage rescue situations as reflected in increased physical, psychological, and anxiety scores and reduced shooting performance. Even with short SAC training, SWAT trainees’ capacity in handling high stress and tactical shooting performance were significantly improved. HR, HRRt, and anxiety tests have been found to be effective in monitoring stress and should be a part of future SWAT training. Conclusion: A SAC program involving real people was created, and its effectiveness was confirmed using a pretest and posttest experimental design.     

抗日战争及伟大意义

抗日战争是在中国共产党倡导的抗日民族统一战线的旗帜下,以国共合作为基础的全民族抗战。中国的抗日战争不仅为世界反法西斯战争的胜利作出了不可磨灭的历史贡献,也是中国由衰败走向振兴的历史转折点。我们应以史为鉴,大力弘扬抗日战争中表现出的爱国主义精神。     

Excel 2000在稿件管理中的应用技巧

为提高期刊编辑部稿件管理的工作效率，提出了借助Excel 2000软件，无须增加额外费用就可使工作变得快捷、准确的方法。通过将Excel 2000应用到稿件管理中的实践，探索出一些发挥诸如数据处理、图表显示、分类、超级链接等功能的操作技巧，可供编辑同行借鉴。     

从“三个代表”的高度 探索大学生思想政治工作的创新

大学生思想政治工作的创新是时代赋予的历史重任,必须从“三个代表”的高度,在继承优良传统的基础上,紧官结合精神文化生活,以科学理论为指导、广博知识为基础、进取精神为前提,探索大学生思想政治工作的创新。     

Measuring Pupils’ Attitudes Towards Socioscientific Issues

Science & Education - This paper presents the results of a large-scale study to validate a questionnaire that measures pupils’ attitudes towards socioscientific issues (the PASSI...     

我国MARC研究论文的统计和分析

以中文期刊全文数据库(CNKI)收录的1979-2005年MARC研究文献为基础,从发文年代分布、主题研究分布等几方面进行统计分析。结合各方面的具体数据分析,指出我国在MARC研究方面的不足,提出了相应的对策和我国MARC研究新的发展趋势。     

CNMARC格式及其在编目实践中的运用

针对CNMARC数据库的特点及在图书编目时利用CNMARC格式常出现的一些问题,提出了解决问题的方法,这是实现书目数据标化和书目数据套录的关键.     

变频调速恒压变量供水系统在生活小区中的应用

设计了一套新型的变频调速恒压变量供水系统应用于生活小区,它克服了一般变频调速恒压变量供水系统常有的缺乏统一调度管理、机泵切换时供水压力波动大等缺陷,瘩提出大小口径机泵分别在大于不同流量时供水的方法,使电机始终处于高效工作区,进一步提高了系统的工作效率。