Research On Modelling And Design Of Mobile Learning System Based On Grid

Mobile communication technology provides the technical foundation for people to work, live and learn anytime anywhere in the mobile environment. Mobile learning has become an important research topic in area of educational technology and computer application. Most of the current domestic and international E-Learning systems are primarily designed based on the distance learning with fixed desktop computer, can not fully meet the requirements of distance learning in mobile environment. Therefore, the research on the mobile environment for distance learning and mobile learning system design has important theoretical and practical significance. With the traditional classroom environment focusing on course , E-Learning environment with fixed desktop computers focusing on learners , in different, learning in mobile environment, focuses on learners' activities, with learning content being practical problems-oriented in learners' lives and work, having the ability of context aware and collaboration with the mobile support, is a new learning methods. Existing development technology of E-Learning systems based on fixed desktop computers can not achieve these functions. To solve large-scale distributed computing and resources sharing issues, grid technology is raised, and its functions of resource sharing, personalized services and collaboration support can meet the mobile learning system users to access instantly rich and accurate learning content and get immediate learning support and collaborative learning, situation-based learning needs in the study. The learners' activities in the mobile environment occur in different situations, different sensor network system access through the Internet. The learning contents in mobile learning environment are changing with the learners' activities , learning resources are located in different virtual organizations, the information is gathered through search and classification, and the adaptation module for transmission is based on the situation to learners' mobile terminals; Learners in mobile environment need immediate support in collaborative learning, and learning partners, teachers and experts who can provide this collaboration support, are located in different virtual organizations; Therefore, large-scale distributed computing and resource sharing in different systems are the key technical problems that mobile learning system to achieve its full functions. Grid technology provides an ideal technical solution to the problem.The thesis explores the theory and methods to design and develop a mobile learning system based on grid, the study involves theoretical analysis model, functional structure model and design methodology about mobile learning system based on grid, the main research methods includes use of literature research, content analysis, logical reasoning and system modelling. The main contents of the study include: (1) discuss theory foundations of mobile learning systems analysis based on literature research and content analysis in the field of mobile learning. Based on related theoretical analysis about learning in the mobile environment, through the comparative study of learning content, the core elements and key functions in traditional classroom environment, the general E-Learning environment and the mobile learning environment, the study has pointed out that mobile learning is centered around activities, gear to practical problems-oriented in situation or their lives and have the ability of context aware. By applying M.Sharples' mobile learning theory based on activity theory, the thesis explores and builds the theoretical analysis model to guide the design of mobile learning system based on grid, which...