ACRL conference Infolit sessions; library impact project

The (US) Association of College and Research Libraries (ACRL) conference takes place this coming week http://conference.acrl.org/ (10-13 April) and Project SAILS has put a list of links to information about the information literacy sessions on its blog here: http://blog.projectsails.org/?p=103. Just skimming through I noticed a paper being delivered by Derek Rodriguez about the Understanding Library Impacts project http://www.derekrodriguez.net/understanding-library-impacts.html. I'm not sure I've come across this before: he is focused on gathering data at the point at which students are doing some sort of "capstone" project (final project etc.), it looks interesting.
Photo by Sheila Webber: Castle walls, sun, ah sun! Thessaloniki, Greece,  April 2013