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DAM Runtime Implementation In a Nutshell

Explore the creation of appearance-neutral SCO content and how to encode appearance properties within an LMS. Learn about XML semantic markup, SCOs without stylistic information, and the implementation of appearance constraints.

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DAM Runtime Implementation In a Nutshell

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  1. DAM Runtime Implementation In a Nutshell By: LCdr Roger St-Pierre

  2. Goals of this R&D was to explore: • How to create SCO content in an appearance neutral manner • How to encode appearance properties; and • How to implement this within an LMS

  3. General Approach • XML Semantic Markup – DocBook • SCOs devoid of stylistic information • XML schema was developed to constrain the appearance of a SCO • IEEE LOM • Technical.format • Educational.learningResourceType • AccLIP IMS user preferences

  4. ADL DAM RTE LMS: CP LMS: Sequencer LMS TILE: Auxiliary Srvc Logo, Part Location ToC Tools Hdr, Ftr SCO AccLIP: CSS Metadata XSL DAM: XSL DAM: Match Content To Location, Add Content Elements DAM: User CSS SCO: XHTML + Intra-SCO Navigation SCO: XHTML + Intra-SCO Navigation + Top, Bottom, Left, Right Content SCO: Final XHTML Overall Sequence of Events

  5. CP Manifest • ORGANISATION Appearance: • declaration of XSL based on • Technical.format and • Educational.learningResourceType • location of Logo and its • Alternative text Logo Info LMS DAM: XSL Default ITEM LOM: Technical.format and Educational.learningResourceType XSL Style Sheet LMS DAM: … ITEM LOM: Technical.format and Educational.learningResourceType Technical.format Educational.learningResourceType SCO: DocBook XML Styling Information

  6. Semantic Model-View-Controller model • XML Expresses the “Model” • XML SCOs contain no style (“View”) and no code (“Controller”) • Who provides additional “controller” information in the transformation and how? (e.g. Intra-SCO Navigation)

  7. DocBook Semantic Markup • Numerous XSL style sheets for transforming into XHTML, PDF, etc. I.e. quite flexible in terms of tranformation • Suitability for e-Learning? Primarily used for documentation • No provision for interactive content such as Forms

  8. DAM Markup Includes • Method for transforming SCO into XHTML • Method for defining transformation based on type of SCO • Way of specifying auxiliary services • Way of specifying a logo; and • Way of defining layout

  9. Metadata Attributes • technicalFormat • Used to define the format of the input to the XSLT process • learningResourceType • Used to further constrain the transformation based on type of SCO

  10. Binding Technique for DAM Markup • Option 1 - Internal to Content Package • Option 2 - External to Content Package with reference in the CP; and • Option 3 – DAM Markup itself references the CP (I.e. Option 2 reversed)

  11. Conclusion • It can be done; but will require • a consensus on issues such as: • Use of Metadata to obtain style • Standardization of content semantic markup • Binding technique for DAM markup • Best practices

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