![Page 1: Greg McClellan DSpace Systems Manager MIT Libraries](https://reader036.vdocument.in/reader036/viewer/2022062421/56649da25503460f94a8e6c4/html5/thumbnails/1.jpg)
Greg McClellanDSpace Systems ManagerMIT Libraries
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Institutional Repositories
Institution-based
Scholarly material in digital formats
Cumulative and perpetual
Open and interoperable
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The DSpace Repository
Institutional Repository for MIT faculty’s digital research materials
MIT Libraries - Hewlett Packard Research Labs collaborative development project
Open Source system
Federated system
Preservation archive
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DSpace
Captures Digital research material in any format Directly from creators (e.g. faculty) Large-scale, stable, managed long-term storage
Describes Descriptive, technical, rights metadata Persistent identifiers
Distributes Via WWW, with necessary access control
Preserves
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Why Libraries
Expertise Large-scale collection management
Assessment/collection policies preservation
Metadata Solid business practices
Commitment Long time frames Mission scope
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Possible Content
Preprints, articles
Technical Reports
Working Papers
Conference Papers
E-theses
Datasets statistical, geospatial,
matlab, etc.
Images visual, scientific, etc.
Audio files
Video files
Learning Objects
Reformatted digital library collections
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Challenges
Faculty Acceptance Valuing and trusting an institutional archive Myriad disciplines with different cultures Copyright/IP policies
Learning and Sharing Designing DSpace system to federate Tracking digital library research, reporting out
Sustainability institutional, financial
Digital Preservation
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Faculty Acceptance
Variety of content Preprints and publications Digital research material Educational material
Respect for discipline differences Access control, review process, etc.
Institutional support Broad advocacy Mission relevance
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Business Plan
One year, Mellon funded projectWritten by business consultants Finance and economics IT product development
Built cost models for running DSpaceDeveloped revenue options Core services (free) Premium services (for-fee)
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Digital Preservation
Philosopy Lots of digital material is already lost Most digital material is at risk Better to have it, do bit preservation than to
lose it completely Need to capture as much information as
possible to support functional preservation Cost/benefit tradeoffs
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Digital Preservation
MIT’s commitment levels Known/supported
TIFF, SGML/XML, AIFF, PDF Known/unsupported
Microsoft Word, PowerPoint (common) Lotus 1-2-3, Visicalc, WordPerfect (less common)
Unknown/unsupported One-of-a-kind software program
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Information Model
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Communities
Departments, Labs, Research Centers, Programs, Schools, etc.
Localized policy decisions Who can contribute, access material Submission workflow
Submitters, approvers, reviewers, editors
Collections definition, management
Communities supply metadata Or contract with library
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Communities
SCHOOLS
DEPARTMENTS
LABS
CENTERS
PROGRAMS
Communities DSpace system
Web User Interface
SCHOOL
LAB CENTER
DEPARTMENT
Archival Storage
Metadata (Database)
Search/Browse
Su
bm
issi
on
Wo
rkfl
ow
CollectionItemItemItemItem
Users
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MIT Early Adopters
Sloan School of ManagementDept. of Ocean EngineeringCenter for Technology, Policy and Industrial Development (CTPID)Lab for Information and Decision Systems (LIDS)
MIT Press – out-of-print books
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Other MIT Collaborators
Academic Computing Open Knowledge Initiative
Learning Object repository OpenCourseWare
Course content, including 3rd party
Information Systems (computer center)
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Library Collections
Libraries another DSpace community
Reformatted print collections Scanned theses, tech reports, etc.
Especially to complete a series Digital image collections, etc.
3rd party archiving (e-journals, etc.)
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Dspace Architecture
WebService
Interface
...
WorkflowManager
ContentManagement
API
E-person/Group
Manager
Authorisation
HistoryRecorder
BusinessLogic Layer
AdministrationToolkit
FederationServices
Storage API
DSpace Public API
Bitstream Storage ManagerRDBMS Wrapper
Search(LuceneWrapper)
Browse API
HandleManager
Web UI
OAIMetadataProviding
Service
Batch ItemImporter
JDBC
PostgreSQL Filing System
ApplicationLayer
StorageLayer
CNRIHandleServer
Plug-in
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Standards-based
Modular architecture, well-defined APIs
100% open source Programmed in java RDBMS and SQL for metadata
CNRI “handles” for persistent identifiers
X.509 certificate-based access control (MIT)
OpenURL linking
OAI-PMH for exposing metadata
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OAIS-compliant
Archival Information Packages Export format Custom XML schema now METS soon
waiting for technical and rights metadata extension schemas
SCORM/IMS packages too
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Technology Stack
Apache, Tomcat, OpenSSL/mod_ssl
Java 1.3, JSP 1.2, Servlet 2.3
PostgreSQL 7, JDBC (rdbms)
CNRI Handle System 5 (persistent ids)
Lucene 1.2 (index/search)
Jena (RDF History system)
JUnit (testing), Log4j (logging)
HP/UX, Linux, Mac OS X, Solaris, etc.
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Metadata
Qualified Dublin Core based on Library Application Profile
Crosswalk from MARC based on Library of Congress crosswalk
Crosswalk from SCORM/IMS
Minimal technical/preservation metadata
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DSpace Federation
Target audience research libraries, government agencies,
cultural heritage institutions (museums, archives)
Inside/outside the US Overlapping/complementary research interests
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DSpace Federation
Goals Drive DSpace development
open source development model Build critical mass of content
support useful interoperation Leverage distributed expertise
metadata digital preservation
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Federation Benefits
Socio-political Shared direction, leadership, priorities, goals,
resources Standards development
Putting weight behind “best practices” e.g. W3C, NISO, IETF, ARL/DLF standards Drive commercial developments
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Federation Benefits
Federated Services, e.g Virtual collections
Networked Digital Library of Theses and Dissertations
New publishing ventures “Overlay” e-journal located at multiple institutions
Cross-institution/cross-collection search NCSTRL project OAI indexes in any subject
Distributed services Leverage industry services supporting preservation, etc.
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Federation Partners
Cambridge University (UK)
Columbia University (US)
Cornell University (US)
Ohio State University (US)
University of Rochester (US)
University of Toronto (Canada)
University of Washington (US)
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Other Collaborations
Open Knowledge Initiative Persistent repository for Learning Objects Implementing DR API
OpenCourseWare Scope: all course content, including 3rd party Archive for entire course web site Expose eligible content items for reuse
Creative Commons
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More Info
http://dspace.org (informational site)
http://web.mit.edu/dspace (live system)
https://sourceforge.net/projects/dspace/