Myung-Ja K. Han is Metadata Librarian and Assistant Professor, University Library at the University of Illinois at Urbana-Champaign. Her main responsibilities consist of developing application profiles for digital collections, creating metadata for digital resources, and evaluating and enhancing cataloging and metadata workflows. Her research interests include interoperability of metadata, especially using OAI-PMH and semantic web technologies, relationships between collection description and item level metadata, and issues on bibliographic control in digital library environment.   http://www.library.illinois.edu/people/bios/mhan3/