Task analysis approach based on perceptual control theory

Based on perceptual control theory,a task analysis approach is proposed to describe more accurately user tasks in dynamic environments,which is of more powerful and flexible descriptive ability. Theoretically,a task meta model is established to describe the interactive process in an individual,dynamic,and flexible way.Methodologically,an implementation framework is illustrated to map the user-oriented description into implementation-oriented models,which will be as a technical tool to transform from a task model to a user interface prototype.

师德建设的语境障碍及其突破

素质教育与应试教育交锋的教改语境、道德体系艰难转型的伦理语境、重心错位的管理语境给师德建设带来的障碍不容忽视。实施素质教育、抵制应试教育的教育改革语境与应试教育氛围二者的交锋,使中小学教师的工作面临诚信危机;伴随全社会范围内伦理道德体系的转型,教师拥有了走下神坛的机会,但无私奉献仍然是师德标兵的首要标识,给师德建设带来特殊的困难;强调量化考核的教师管理与评价制度促使教师重视考试分数、热衷于论文发表,不能踏实工作,潜心探索。惟有突破深层语境障碍,师德建设长效机制才能切实建立起来。