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Universal Resource Names, Institutional Repositories,and the National Library 11.1.2007 – FinnOA WorkshopEsa-Pekka KeskitaloNational Library of Finland – Library Network Servicesesa-pekka.keskitalo helsinki.fi @
Happened so far • National Library has recommended the use of URNs and has been using them herself • Library has distributed URN identifiers from a generator on the web (http://www.lib.helsinki.fi/cgi-bin/urn.pl) • But then what? • No information of who gave URNs to which documents • No support from web browsers (yet)
National URN resolver • Resolver receives a URN and redirects to a URL. • A national resolver contains information about URNs with the code ”fi” • Resolvers may also direct to other resolvers based on namespaces • e.g. URNs with ”se” to urn.kb.se in Sweden. • Subset namespaces may have resolvers of their own • e.g. urn:nbn:fi:tkk... is redirected to Helsinki University of Technology.
Resolving ISBN and ISSN based URNs • The ISSN has no internal meaningful elements to identify language, country, publisher, or medium. • ISSN 1456-2979 – who should resolve this? • Global resolution system would be needed • Otherwise, the right resolver must be indicated • The ISBN is, to some extent, meaningful • Finnish National Centre for ISBN allots ISBNs starting with 951- or 952-. • But sometimes more complicated!
Feeding Resolver with Data • Publisher keeps an up-to-date list of URN–URL pairs. • A long-term responsibility! • Publisher may obtain a namespace of its own to facilitate URN delivery (e.g., if using an internal URN generator) • Responsibility for uniqueness! • Data expressed as a XML-file. • Resolver harvests data from the file on a regular basis.
URN and DSpace • We want URN support into DSpace: • URN generation integrated into the submission process • Clickable URNs in the user interface • Easy updates to the resolver • Work is under way in Universitätsbibliothek Kassel • Might be ready in January, 2007! • Data harvested directly from DSpace using OAI-PMH.
Whom to blame • Everyday work with URNs and other identifiers: Centre for ISBN (isbn-keskus(at)helsinki.fi) • Standardization related issues: IT Research Specialist Laila Heinemann (laila.heinemann(at)helsinki.fi) • Resolver and DSpace technology: Systems Analyst Samu Viita (samu.viita(at)helsinki.fi), and the Julle team. • Coordination and PowerPoints: Senior Planning OfficerEsa-Pekka Keskitalo (esa-pekka.keskitalo(at)helsinki.fi) THANK YOU!