Patron Driven Acquisitions: Or I Wish I Knew Then... Page: 6
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Amount of Money Spent
By the end of June, 2012, we could see that we were going to run out of funding for the collection by
early in the fall semester. So we started examining options, specifically short-term loans. The data
clearly indicated a power-law distribution of title-usage (see Figure 5), showing that many of our titles
were not used more than a few times. While this rate of multiple-usage was far greater than print or
EBSCO e-books, the title-usage curve required us to seriously consider short-term loans.
The Long Tail of
Through Aug, 2012
1 "Usage" = Open 10 Minute
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Purchased Titles Only
Usage After Purchase
1 3 5 7 9 11 13 15 18 21 24 29 31 36 39 41
Our key question was, what difference would have short-term loans made to the bottom lines of both
amount spent and titles owned. We used Excel's Scenario Analysis (AKA "What if..." analysis) to set up
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Avery, Elizabeth Fuseler & Harker, Karen. Patron Driven Acquisitions: Or I Wish I Knew Then..., paper, August 2012; (digital.library.unt.edu/ark:/67531/metadc130195/m1/6/: accessed March 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .