泛在学习系统中认知负荷的产生及其优化控制

A Research on the Generation of Cognitive Load and Its Optimal Control in Ubiquitous Learning System

学习者通过超媒体学习时，认知负荷与知识获取之间呈显著相关性。泛在学习系统通过上下文感知系统增加人机信息流，但同时不可避免地增加了人们对于信息过载的恐惧感和认知负荷量。该研究在认知负荷理论的基础上分析了泛在学习系统中认知负荷的产生，构建了泛在学习中认知负荷的结构模型，并基于信息呈现方式的设计提出认知负荷优化控制的策略和方法。

There are significant differences between the cognitive load and knowledge when learners learn things through hypermedia. As everyone knows that ubiquitous learning system can increase the man-machine information flow， but at the same time， it will inevitably form the sense of fear of information overload and cognitive load to people. On the basis of the cognitive load theory， this paper analyzed the generating of the cognitive load in ubiquitous learning system， and then constructed its structure model. At last， on the basis of information presented design， this paper proposed some optimal control strategies and methods of cognitive load.