Impact: the last frontier in digital library evaluation Anita Coleman, Laura M. Bartolo, and Casey Jones   View Paper (PDF)   Return to Poster Session Abstract The NSF-funded National Science Digital Library (NSDL) is engaged in an ongoing discourse about digital library evaluation. The Educational Impact and Evaluation Standing Committee (EIESC) has successfully identified desirable features in digital libraries such as usability and usage, but the hardest measure is impact. What is the impact of a DL? Members of the EIESC have engaged in pilots and feasibility studies using bricolage (a blend of qualitative and quantitative approaches to evaluation), and these activities are moving NSDL toward a richer understanding of impact. BIBTEX  Technology http://dlist.sir.arizona.edu. 4   EIESC. http://eduimpact.comm.nsdl.org/events/?pager=236. 5   Tamara Sumner , Sarah Giersch , Casey Jones, Steps towards establishing shared evaluation goals and procedures in the National Science Digital Library, Proceedings of the 3rd ACM/IEEE-CS joint conference on Digital libraries, May 27-31, 2003, Houston, Texas 6   Webmetrics in NSDL. http://webmetrics.comm.nsdl.org. }, ©2006 Association for Computing Machinery