Using an application profile based service registry
DCMI '07 Proceedings of the 2007 international conference on Dublin Core and Metadata Applications: application profiles: theory and practice
Unsupervised creation of small world networks for the preservation of digital objects
Proceedings of the 9th ACM/IEEE-CS joint conference on Digital libraries
Digital object prototypes: an effective realization of digital object types
ECDL'06 Proceedings of the 10th European conference on Research and Advanced Technology for Digital Libraries
ECDL'05 Proceedings of the 9th European conference on Research and Advanced Technology for Digital Libraries
A Web-based resource model for scholarship 2.0: object reuse & exchange
Concurrency and Computation: Practice & Experience
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This paper describes the aDORe repository architecture designed and implemented for ingesting, storing, and accessing a vast collection of Digital Objects at the Research Library of the Los Alamos National Laboratory. The aDORe architecture is highly modular and standards-based. In the architecture, the MPEG-21 Digital Item Declaration Language is used as the XML-based format to represent Digital Objects that can consist of multiple datastreams as Open Archival Information System Archival Information Packages (OAIS AIPs). Through an ingestion process, these OAIS AIPs are stored in a multitude of autonomous repositories. A Repository Index keeps track of the creation and location of all the autonomous repositories, whereas an Identifier Locator reflects in which autonomous repository a given Digital Object or OAIS AIP resides. A front-end to the complete environment---the OAI-PMH Federator---is introduced for requesting OAIS Dissmination Information Packages (OAIS DIPs). These OAIS DIPs can be the stored OAIS AIPs themselves, or transformations thereof. This front-end allows OAI-PMH harvesters to recurrently and selectively collect batches of OAIS DIPs from aDORe, and hence to create multiple, parallel services using the collected objects. Another front-end---the OpenURL Resolver---is introduced for requesting OAIS Result Sets. An OAIS Result Set is a dissemination of an individual Digital Object or of its constituent datastreams. Both front-ends make use of an MPEG-21 Digital Item Processing engine to apply those services to OAIS AIPs, Digital Objects, or constituent datastreams that were specified in a dissemination request.