The impact of collaborative online reading on summarizing skills

The aim of this study was to determine whether, as a result of collaborative-online reading of a chapter from a book of an academic nature, the quality of the collaborative summary that the readers would write would be higher than that written by readers who would both read the same chapter and write a summary in a face-to-face setting. In this study we examined the difference between the summaries written by participants from two groups, each group was divided into subgroups of 3 participants who had read collaboratively a chapter of a book, and collaborated on writing a summary. The participants of the experimental group read the chapter as it appeared in a website for collaborative reading built especially for this study and the participants were asked to summarize the chapter on a shared online digital document. The participants of the control group were asked to read the chapter face-to-face and to collaboratively summarize it in hand writing. The quality of the summaries was evaluated with a tool developed by Rivard (2001). This tool was developed to measure the quality of the summaries. In our study the main and secondary ideas that were supposed to be included in the participants’ summaries were identified by three literature teachers using ten different criteria and the summaries were analyzed by two other judges based on these criteria. The findings indicated that there were significant differences in the majority of the writing indicators being measured with the tool. The findings indicated that collaborative-online reading and writing produce a summary of a higher quality than one read and hand written collaboratively face-to-face.     

基于遗传算法和BP神经网络的优化设计方法

随着生产规模的复杂化、多维化和非线性等复杂特性的增加，对生产中高效的优化技术要求也越来越迫切，利用并行遗传算法和BP网络的优点，提出采用遗传算法的并行搜索和解空间搜索的优点进行网络参数的选取，利用BP网络简单和可塑性强的优点来优化样本空间，以取得整体的优化效率。     

初等函数统一算法的几个问题

本文拓广了初等函数统一算法，并证明了算法的收敛性．作了误差估计。     

Parents of Traditionally Aged Community College Students: Communications and Choice

Five suburban community colleges in a metropolitan area collaborated on a survey to parents of high school graduates of the class of 2002 who attended the colleges in fall 2002. The study was undertaken to learn more about parents roles in their students selection of community colleges, to give insights and information about this important community college constituency, and to assist community colleges to shape more effective ways to foster positive and supportive opinions among parents of potential students. Parents want the community college to provide students with credits and grade point averages enabling transfer, overestimate their students academic skills as measured by course placement tests, engaged in a number of college-choice activities, and indicate that factors associated with lifestyle and money were major reasons for selecting the community college. Associations between parents social capital and perceptions of their students academic abilities were found for a number of dependent variables examined. The study also revealed important differences in how participating institutions record and calculate key measures such as credits earned and grade point averages.     

“三个代表”重要思想的理论和实践

学习“三个代表”的重要思想 ,必须坚持理论联系实际的马克思主义学风。要深入把握“三个代表”重要思想的理论根据和实践根据 ,更要研究怎样切实有效地实践“三个代表”。     

学习网:基于Agent的智能学习型社会

信息化社会要求社会成员必须不断地学习,有目的、及时、高效地更新自己的知识和技能,从这一意义上来说,信息化社会必须是一个学习型社会.信息技术是创建、形成、支持信息化时代学习型社会的基本手段.本文提出了一个智能的学习网模型,依靠代理和个人知识管理技术对知识的访问和应用提供全面的支持,以便提供一个广泛可通达的学习环境.实质上是建立一个开放性的体系架构,将不同类型的系统整合成一个人与计算机代理自然共生的复杂适应系统.     

认知视角下农村初中数学课堂教学策略研究

认知结构优化是教学优化的底层过程,是提高课堂教学质量的关键。遵循认知理论对日常教学中教师的备课、新课导入、讲解和小结环节进行长达二年多的可操作干预,初步得出“上位导入”、“条件化讲授”、“原理支持性练习”和“当堂思路建模”四条策略。     

有效地改进教师的教学行为

通过大量练习来学习数学仍然是我国数学教学的主要特征。数学教师的教学观念需更新：数学教学的理念将由以数学学科为本转变到以学生发展为本，数学教学的心理学基础将由行为主义转向认知理论与构建主义，数学教师在数学教学中的作用将由主导作用转向组织者、指导者和辅导者，改进数学教师教学行为的途径有：教学反思、案例分析、行动研究等。     

Field-study science classrooms as positive and enjoyable learning environments

We investigated differences between field-study classrooms and traditional science classrooms in terms of the learning environment and students’ attitudes to science, as well as the differential effectiveness of field-study classrooms for students differing in sex and English proficiency. A modified version of selected scales from the What Is Happening In this Class? questionnaire was used to assess the learning environment, whereas students’ attitudes were assessed with a shortened version of a scale from the Test of Science Related Attitudes. A sample of 765 grade 5 students from 17 schools responded to the learning environment and attitude scales in terms of both their traditional science classrooms and classrooms at a field-study centre in Florida. Large effect sizes supported the effectiveness of the field-studies classroom in terms of both the learning environment and student attitudes. Relative to the home school science class, the field-study class was considerably more effective for students with limited English proficiency than for native English speakers.