Students University students Learning systems 2 Quality control 2 Teachers' 2 Back-propagation neural networks 1 Backpropagation 1 Classroom teaching qualities 1 College students 1 Comprehensive qualities 1 Computer aided instruction 1 Computer assisted language learning 1 Computing platform 1 Deep learning 1 Deep neural networks 1 E-learning 1 English Learning 1 English teaching 1 Face recognition 1 Facial Expressions 1 Fuzzy neural networks 1 Growth and development 1 Head-up 1 Individual Differences 1 Integrated modeling 1 Junior high schools 1 Language education 1 Learning 1 Learning approach 1 Learning resource 1