id author title date pages extension mime words sentence flesch summary cache txt crl-15524 Hahn, Karla L.; Faulkner, Lila A. Evaluative Usage-based Metrics for the Selection of E-journals 2002-05-01 13 .pdf application/pdf 7918 302 51 When the pur- Evaluative Usage-based Metrics for the Selection of E-journals 217 chase value exceeds the use value, re- searchers turn away from subscriptions to alternative sources of journal articles. The various sta- tistics and metrics can be seen as map- ping a multivariate space of products de- scribed by unique combinations of values such as price, article content, and usage. cache/crl-15524.pdf txt/crl-15524.txt