我像申请澳大利亚中央昆士兰的科学、工程和健康学院http://fseh.cqu.edu.au/FCWViewer/staff.do?site=100&v=pos
这个里面的老师有很多职位，我都搞不懂这些职位是什么意思，他们是干什么的，哪位高人指点一下，
Executive Dean
Associate Dean
Director
Professor
Associate Professor
Research Fellow
Senior Lecturer
Head
Associate Director
Lecturer
Associate Lecturer
Manager
Services Officer
Executive Assistant
他们中哪些是愿意招收学生的，我想读PHD的课程。