The Key Technologies Research Of Ubiquitous Learning System Based On CMS

With the conception of lifelong education and learning society proposed, ubiquitous learning (U-Learning) has gained more and more attentions and becomes a natural development trend of a learning society and the pursuit for lifelong learning. In addition, the rise and development of ubiquitous computing technology such as pervasive computing, ubiquitous network have changed the way people acquire knowledge and provide technical support for ubiquitous learning. Therefore, research on macro idea and micro technology of ubiquitous learning becomes the focus of scholars around the world, including the field of education, computer and information technology and so on.Based on evolution path and background of E-Learning, M-Learning and U-Learning, this thesis compares the characteristics of each stage of the evolution path. By analyzing the relation and difference between ubiquitous learning and E-Learning, M-Learning used widely, this thesis presents the important evolution step from E-Learning, M-Learning to ubiquitous learning system. We study the characteristics of ubiquitous learning and design system structure of ubiquitous learning from learning device, learning resources and learning interactive objects which are integrated by resource evolution. On this basis, we analyze the research status of security in ubiquitous learning system and give security design of ubiquitous learning system. This study enriches the ubiquitous learning theory.This thesis realizes a U-Learning prototype system based on open source content management system. Based on the limitations of existing learning platform, including highly technology, long cycle, expensive and complex maintenance and so on, this thesis chooses open source content management system (CMS) to develop the system. Open Source CMS is free with abundant functional modules and available for secondary development and knowledge management. We choose Drupal to develop U-Learning system designed by analyzing the characteristics of open source CMS. We use Windows Phone as the mobile client development tool and develop mobile courseware and mobile learning client. This thesis provides a convenient and economic method for the development of ubiquitous learning system.Finally, this thesis focuses on access control of resource service layer in ubiquitous learning system. Given the limitation of existing access control technologies, we propose a context-aware access control scheme based on CP-ABE algorithm. This thesis provides a new way for security of ubiquitous learning resources.