The Head Librarian has primary responsibility for the selection and balance of all library collections, assisted by the User Services and Electronic Services library staff. Recommendations from faculty, students, and staff are solicited. As a member of the faculty, the Head Librarian is aware of curricular developments, new courses, and faculty hires, to resource their research needs. Demand-driven acquisition (DDA) for e-books and streaming video and rapid acquisition of print materials facilitate timely response to patron needs.