I joined the Computer Science department at Old Dominion University in 2002. I worked at NASA Langley Research Center from 1991-2002. Through a NASA fellowship, I spent the 2000-2001 academic year at the School of Information and Library Science, University of North Carolina at Chapel Hill. I am active in the Open Archives community and am an editor of the OAI-PMH, OAI-ORE, Memento, and ResourceSync specifications. I have developed many digital libraries, including the NASA Technical Report Server. In 2007 I received an NSF CAREER award. My research interests include web science, repository-object interaction and digital preservation. Further information about me can be found at: