is there any reason to write Computer Science, Department of

This is most likely for the benefit of visually impaired users who use screen reading software.

Users of screen readers, like all users, like to scan through a list of links quickly. They find it enormously frustrating when they have to listen to redundant words like "Department of ..." "Department of ..." over and over again. If we put the important information first ("Architecture ... " "Computer Science ..." "Engineering ..."), the user can quickly decide whether to follow the link or jump to the next one.

Usability studies show that this form of wording also helps sighted users. Most people, when they are scanning through a list of links, prefer to read just the first few words on each link.