5Kimberly E. Arnold and Matthew D. Pistilli. Course Signals at Purdue: Using learning Analytics to Increase Student Success[EB/OL].http:// www.itap.purdue.edu/learning/docs/research/Arnold_Pistilli-Purdue_ University_Course_Signals-2012.pdf,2015-12-31. 被引量:1
7Jo Davies and Martin Graft. Performance in e-learning online par- ticipation and student grades[J]. British Joumal of Educational Teeh- nology, 2005, 36(4): 657-663. 被引量:1