張瓊穗 陳宜欣2014-10-272014-10-272005-02-??http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/22488遠距學習 網路學習 線上教學 需求分析 線上助教Distance learning Web-based learning Online teaching Teaching assistants Needs assessment大學網路課程線上助教工作職責之探討The Study on the Role & Competences of Online Teaching Assistants in Web-based Learning Courses