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DELTA

DELTA . Distributed e-Learning Tool and Resource Architecture. Functions. Ability to create and search for e-learning resources Ability to search for resources and view the pedagogy that underpins them ‘Grow context’ around resources Find and explore related resources

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DELTA

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  1. DELTA Distributed e-Learning Tool and Resource Architecture

  2. Functions • Ability to create and search for e-learning resources • Ability to search for resources and view the pedagogy that underpins them • ‘Grow context’ around resources • Find and explore related resources • Extend with additional ontologies

  3. Key Elements • Semantic Web • Ontology driven • Distributed Repositories • Provides and consumes services from ELF • DELTA is in 2 parts: • Web service • Web based user-interface (demonstrator)

  4. DELTA Architecture Version 1 Servlet (Laszlo) Client Test Web UI Repository HTTP (SOAP) Web Service (Mediator) RDF HTTP HTTP(RDQL) HTTP Case Study 1 Word Document TCP (JRacer) Case Study 2 PDF Document RACER Ontology

  5. DELTA Architecture Version 2 Servlet (Laszlo) Client Web UI Repository HTTP (SOAP) Web Service (Mediator) RDF (MySQL) HTTP JDBC(RDQL) HTTP Case Study 1 Word Document TCP (JRacer) Case Study 2 PDF Document Graphical UI HTTP (SOAP) RACER Ontology

  6. Graphical view of ontology

  7. DELTA users • The following users have been identified: • Practitioners (Primary) – lecturers, teachers, and students in a ‘vicarious learning’ role • Learners (Secondary) – these could also be teachers in ‘vicarious learning’ role. • Quality Assurors (Primary) • Regional support agencies such as i10 in the East of England (Tertiary) • Teaching Support Units (Secondary) – from point of view of integrating into a MLE • Researchers (Primary) – for research as opposed to teaching • Repository Owners (Tertiary) – who own the various access and security policies • DELTA Administrators (primary) – from the point of view of maintaining the system (including the ontologies and metadata).

  8. Practitionr Theories & Models Effective Practice Case Study Types Influences Influences Practitioner Approach Influences Competence LearnerActivity Is part of Defines Generic Learning Activities Operations (teaching sequenced) Tool’s Functional Reqs Is part of Roles Assessment Activity Derive Specify Defines Defines Is part of TeacherActivity Context Basis for the core ontology

  9. Growing context

  10. Thank You Michael Gardner mgardner@essex.ac.uk

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