The State of the NDLTD Union Catalog T. Hickey & T. Dehn, OCLC ETD 2003

The Catalog OCLC harvests records Creates union catalog Union catalog is itself harvestable Metadata only – not the theses themselves

Capabilities Harvesting –OAI-PMH versions 1.1 and 2.0 Harvestable sets –Sets by institution Searching –SRU (Z39.50 on the Web) –VTLS –Virginia Tech Open Digital Library demo Unicode support

Statistics 19 Sources 61,998 records –Probably some overlap Adding 1-2 new sites/month

Metadata Formats Dublin Core – All ETDMS – 9 MARC – 5

Record Counts > 10,000 – OCLC_ETD, VTETD > 5,000 – HKU, NSYSU, MIT > 1,000 – UUdiva, LSU, CALTECH > 500 – HUMBOLT, LMU > 100 – NCSU, PHYSNET, PITT, VIENNA, DUETT, DRESDEN, WATERLOO > 0-50 – USF, Laval, UBC

Future Plans Better integration with WorldCat –E.g., De-duplication, FRBRization Different sets? Better searching (SRU/SRW) Open to suggestions