Haoqiang Wang, Zejun Huang, Shang Lou, Weihua Li, Guixia Liu, Yun Tang
In Silico Prediction of Skin Sensitization for Compounds via Flexible Evidence Combination Based on Machine Learning and Dempster-Shafer Theory
Chemical research in toxicology
paper presents tool developed purpose assessing teaching presence online courses make use computer conferencing preliminary results use tool method analysis based garrison anderson archers model critical thinking practical inquiry computer conferencing context concept teaching presence constitutively defined three categories design organization facilitating discourse direct instruction indicators search computer conference transcripts identify category pilot testing instrument reveals interesting differences extent type teaching presence found different graduate level online courses