The National Digital Information Infrastructure and Preservation Program
(NDIIPP) at the U.S. Library of Congress has published "It's About Time:
Research Challenges in Digital Archiving and Long-term Preservation."
The report presents findings from a joint Library of Congress/National
Science Foundation workshop on research challenges in digital
preservation.  Margaret Hedstrom chaired the workshop, which was
attended by experts from government, academia, professional
organizations, and the private sector.  As detailed in the published
report, the workshop identified a number of priority areas for research
into new models, methodologies, and tools for long-term preservation of
digital material.  The report is available on the NDIIPP web site at
http://www.digitalpreservation.gov/index.php?nav=3&subnav=11.