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91.
This study investigates the mechanisms of scaffolding in a synchronous network-based environment – the ‘collaborative virtual
workplace’. A theoretical ‘multi-actor’ scaffolding model was formulated. The study itself focused on the role and inter-relations
of verbal scaffolding by tutor and peers during a collaborative process of making decisions about environmental issues. The analysis drew on data from the decision-making
discussions of 31 groups – material that was saved automatically by the learning environment software. The age of the 62 students
ranged from 14 to 17. Discourse act categories were devised to describe the tutor’s and the students’ task-related, supportive
and social communicative acts. The scaffolding situation was characterized through a causal discourse act interaction approach.
Tutor and students appeared to be elaborating and replacing each other’s process scaffolding acts in the collaborative decision-making
situation. The influence of certain tutor’s and students’ inter-related scaffolding patterns on students’ decision-making
provided empirical support for the ‘multi-actor’ scaffolding model.
in final form: 12 May 2005 相似文献
92.
针对当前树机器上同步并行算法存在的缺陷，本文提出一种应用分配思想和归并技术实现并行排序的算法，并通过进一步的分析证明了此算法简明而高效。 相似文献
93.
A synchronous blend of online learning and “face-to-face” teaching is becoming a feasible instructional approach in higher education with the advent of technology. Although this learning mode is not new in higher education, little research has been done to contextualise social presence experiences in which effects of interactions were explored for enhancing learning. A qualitative approach was adopted using the case study method to examine the instructor and students’ pedagogic interactions in the social presence of a blended synchronous learning environment. This paper reports an exploration of the blended learning with an online group of students at a remote site attending a computer-aided engineering drawing course synchronously with a face-to-face group taught by an instructor in a laboratory. The process of interaction was visually and verbally mediated by videoconference as if in an online face-to-face learning community. The findings show that the online and face-to-face groups had different social presence experiences in which interaction emerged. Emotional adaptation and practice is needed for the students and the instructor in such a complex environment. Based on the interaction patterns, a framework of interactions in the blended synchronous learning environment is conceptualised to inform course development and instructional design. Implications for further study are also discussed. 相似文献
94.
95.
李成林 《四川教育学院学报》2008,24(8):66-67
电视新闻是电视与新闻结合的产物,因此电视新闻的传播实践就应该具备新闻特征和电视特征。但在实践中,人们有意无意地忽略了电视特征。从电视画面意识、蒙太奇意识和同期声意识三个方面阐述了电视意识的培养。 相似文献
96.
永磁同步电动机在一定工作情况下将呈现混沌运动,这种现象可能是有害的.该文采用负反馈控制方法对永磁同步电动机混沌模型进行控制,将系统控制到指定的平衡态.详细介绍了应用Maflab编程求解方程和数值仿真的结果,以此证明了此控制简单有效. 相似文献
97.
体育理论与实践课同步式教学法对提高大学生理论指导实践能力的研究 总被引：2，自引：0，他引：2
多年来高校体育理论课学习时数不足,重视程度不够,大学生对体育及人体科学、运动的科学理论知晓率低。采用90分钟体育课堂理论与实践同步进行教授的教学形式,探讨体育理论与实践课同步式的教学效果。结果表明:1)理论与实践同步式教学法能够提高大学生对人体运动科学及体育理论知识的知晓率,且不影响体育课与达标成绩;2)同步式教学法是深受大学生喜欢的一种高校体育课创新教学形式。结果提示:普通高校体育理论与实践课同步式教学有助于提高大学生对体育的认识,有利于发展学生的开创性思维,充分发挥学生学习体育的积极性和主动性,学会运用体育与人体的基本知识指导独立健身锻炼,同时为终身体育打下坚实的理论基础。 相似文献
99.
100.
甘秋维 《杨凌职业技术学院学报》2012,11(2):77-79
从计算机实训室的运行与维护中出现的问题及对策出发,介绍了网络同传功能在实验室中的应用,并详细阐述了网络同传前的准备工作、同传过程中的具体操作和同传时IP地址和计算机名的设置。 相似文献