Jie Zhang @jie-zhang Active 8 years, 2 months ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Jie Zhang's profile was updated 8 years, 4 months ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio