1. SCORM-NSDL Workshop May 18, 2004

2. - 2 - Educational Materials are Scattered across the Internet NASA Math Forum State standards Scientific American Ask a Scientist GROW

3. - 3 -... to provide a coherent set of collections and services across great diversity The Integration Task...

4. - 4 - Interoperability The Problem Conventional approaches require partners to support agreements (technical, content, and business) But NSDL needs thousands of very different partners... most of whom are not directly part of the NSDL program The challenge is to create incentives for independent digital libraries to adopt agreements

5. - 5 - Standards: Function Versus Cost of Acceptance Function Cost of acceptance Many adopters Few adopters

6. - 6 - Example: Textual Mark-up Function Cost of acceptance SGML ASCII HTML XML

7. - 7 - Standardization in the NSDL Coax and cajole, not regulate Diverse communities with different standardization needs and traditions Low incentives to conform to imposed standards Mixed expertise when attempting to conform Yet, surprisingly many organizations will voluntarily follow clear guidelines

8. - 8 - The Spectrum of Interoperability LevelAgreementsExample FederationStrict use of standardsAACR, MARC (syntax, semantic, Z 39.50 and business) HarvestingDigital libraries exposeOpen Archives metadata; simplemetadata harvesting protocol and registry GatheringDigital libraries do not Web crawlers cooperate; services mustand search engines seek out information

9. - 9 - The Repository holds information about every collection and item known to the NSDL. The NSDL Repository NSDL Repository redistribute ingest

10. - 10 - Standards Implemented in the NSDL Repository Phase 1 Object model Metadata: Dublin Core with educational extensions Ingest and redistribution: Open Archives Initiative, Protocol for Metadata Harvesting item metadata collection metadata URL Items Collection

11. - 11 - NSDL Search Service Search Service Collections NSDL Repository The search service has been built by the University of Massachusetts, Amherst http

12. - 12 - NSDL and the Web Collections NSDL Repository http

13. - 13 - NSDL Archive and Preservation Service Collections NSDL Repository The archive service has been built by the San Diego Supercomputing Center Archive Service http

14. - 14 - NSDL Community Input Recommendations and Reviews Collections NSDL Repository http ?

15. - 15 - NSDL Repository: Recent Decisions Object model and options for redistribution Content and metadata management (Fedora model) Relationships between objects (RDF) Web Services (WSDL) Publish/subscribe

16. - 16 - NSDL Repository: Discussion Items Federation(s) Should we support selected federations (e.g., SCORM)? Object model Should we support selected packaging standards (e.g., METS, IMS, MPEG-21)? Should we support a persistent identifier system other than URLs and OAI identifiers (e.g., Handle, DOI)? Persistence How can our technical decisions enhance persistence and reuse?

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