Based on the analysis of blended learning characteristics, a blended learning pro-cess model including preliminary analysis, learning activities design, blended evaluation was con-structed. Then, a blended learning case study was carried out by taking the Fourth Military Medical University Information Security course as an example. The implement methods of setting learning goal, selecting learning content, constructing learning environment, organizing learning activities and course evaluation, were described in detail. Lastly, from the effectiveness questionnaire, it could be shown that blended learning motivated the learners' enthusiasm significantly. In order to improve the learning performance, we proposed that blended learning activities must be flexible and adaptive,and integrate face-to-face learning with online learning effectively.

Objective To introduce and analyze the current user security authentication system in the campus network and point out the secure problems and hidden dangers of the correspondence entities in the campus network. Methods The authentication technologies and protocols in the TCP/IP network model were compared. It was proposed that the campus network security authentication solution should include access control in data link layer, connection control in network layer and unified authentication in application layer. Results The solution could improve the campus network authentication security rank. Conclusion The security and reliability of the network system are enhanced.