Background Diminished fiscal resources Rapid shift towards digital formats Last opportunity to capture use-data from a primarily print monographic world
Questions Can historic use of print books predict e-book use? How might electronic availability change use patterns within different disciplines? How might historic use data inform decision-making with regard to new models?
The data! Examined 10-year period from 1997-2007
Organization Broken into out by LC range into subject specific spreadsheets Two tabs included. Tab1: all 10 years of data Tab2: approval items from the last 2 ½ years
Color coding We color-coded the spreadsheets in the following way: RED denoted an item that averages more than 2 circs per year over its life in the collection. YELLOW denoted an item that averages more than 1 (and up to 2) circs per year over its life. WHITE denoted items not fitting a color category (see below). LIGHT BLUE denoted an item that has circulated only 1 time ever. DARK BLUE denoted an item that has never circulated.
_1 _2 _3 _4 _5 _6 _7 _8 _9 _10 Am I Hot or Not?
Review Guidelines No one right way Sheer use only a starting point Approval plan should catch “must-haves”
Easy! (er…sometimes) Many call number ranges were not obvious candidates for slip or approval and then selectors had to determine why. Publisher? Sub-topic? Series? Many many other reasons?
Funds (the money) Each selector determined cuts of 20% and 40% from their funds. Approximate money saved based on previous 2 years Estimate cuts from approval and firm Net amount “saved” subtracted from approval plan Balance work of selecting--not simply move wholesale to an item-by-item selection
We were able to… Identify Savings! 20% and 40% cuts Only had to take 20%! Identify Themes! Humanities circulation tends to rise over time Science and math tend to circulate more heavily initially OVERALL non-circulating items are likely to circulate after 5 years the collection
Purchase on demand program If an electronic title is opened 5 times NCSU Libraries automatically purchases it Catalog titles are not removed Some schools are dropping titles that aren’t requested or “opened” within 6 mos. Our study indicates that, across disciplines, this will leave users without access to needed titles, if print use is indicative of e-book use
E-use patterns Can monographic use patterns predict e-use patterns? Not enough data yet! Sample data trends towards yes in some disciplines In QA call ranges for the subject area math, with use counted as pages viewed, high use and low use ranges line up closely with ebrary use since 2005 In B and BJ ranges for the subject area philosophy no discernable pattern is recognizable
Future Studies Comprehensive examination of use via publisher Use data to select efficiently Baseline for studies to examine change in use patterns as e-titles increase (Continue to) examine, across disciplines, whether or not print use predicts e-use