Converging research towards AccessForAll
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Converging research towards AccessForAll

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Converging research towards AccessForAll Converging research towards AccessForAll Presentation Transcript

  • Research convergence to enable accessibility to be customised for individual users Liddy Nevile La Trobe University Australia
  • Ideas …
    • Concepts behind AccessForAll
      • personal choice of adaptation
      • accessibility for everyone
      • discovery of what “I” need
      • interoperability
    • Approaches to accessibility
      • universal design and/or
      • distributed and cumulative metadata
  • AccessForAll Accessibility
    • What do we want to achieve?
    • Flexibility with respect to resources and services so everyone can use them as they choose.
    • Let’s see what TILE does: http: //inclusivelearning .ca/tile/
  • TILE
    • E-learning environment that enables learner-centric transformation of learning content and delivery
        • Authoring support for transformable content and Metadata
        • Browser
        • Learning Object Repository
        • Learner Preference System
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  • So what’s happening?
  • DRD metadata
  • In fact, ……
  • TILE is …
    • A centralised system
    • All resources are digital
    • All resources standards compliant
    • All resources are ‘atomic’
    • All resources are appropriately described
  • Digital resources (Microsoft research)
  • Digital resources (Microsoft research)
  • AfA definition of accessibility
    • the accessible relationship between the user and the resource enables the user to make sensory and cognitive contact with the content of the resource.
    See http://www. imsglobal .org/accessibility/
  • Sensory needs and preferences
    • I can’t see now
    • I like Braille but screen-reading is OK
    • I can’t see well now
    • I may have an epileptic seizure if I see flashing
    • I read (Braille) slowly and may need extra time
    • Note - no mention of disabilities!
  • Relationship Descriptions
    • So how do we describe sensory and other accessibility needs and preferences for digital resources?
    • We have opted for display , control and content as the three relationships that can be affected and can change.
  • Adapting to all devices & contexts
  • Adaptive technologies
    • Some replace standard technologies and some have special requirements.
    • Many have features users like to use.
    • In addition, there may be requirements for other display characteristics, and there may be separate needs for content adjustment.
  • Adaptive technologies
    • Some requirements can conflict, eg an on-screen keyboard and a ‘full-screen’ resource.
    • For this reason, descriptions of needs and preferences for display, control and content characteristics need to be separated.
  • Needs and preferences
    • Some people can choose between several alternative resources
    • Some people can use only one
  • Multiple PNPs
    • Descriptions of users needs and preferences (PNPs) will be used according to the context or circumstances and may differ according to the occasion.
    • PNPs may be personal, situational, contextual, etc.
    • PNPs should be stored and available any time, anywhere.
    • Accessible resource components
      • in general this means WCAG compliance
      • BUT …..
    • resources may be distributed
    • resources may be produced ‘just in time’
    Dependencies
  • What else is happening?
    • IMS and Dublin Core and IEEE/LOM and CEN ISSS/LT and INCITS/V2 and W3C and ISO JTC1 SC …. and
  • Metadata is …
    • Structured, machine-readable information about resources
      • (data about data)
    • Used when Google can’t help…
    • Human-input is valued
    • but interoperability is not implied….
    • And now it might be tagging as well….
  • Personal Needs and Preferences (PNPs)
    • Display:
      • how resources are to be presented and structured,
    • Control:
      • how resources are to be controlled and operated, and
    • Content:
      • what supplementary or alternative resources are to be supplied.
  • Display preferences
    • Where the person can’t see text, it may need to be transformed into another mode - auditory or tactile (Braille).
    • Text may need to be bigger and a different colour.
    • Images may need to be bigger.
  • Control preferences
    • Some assistive technologies effectively replace the typical mouse and keyboard combination without any adjustment
    • but others use technologies that require special configuration.
    • An on-screen keyboard will use screen space e.g.
  • Content preferences
    • A dyslexic person may need additional images to avoid excessive text density
    • a ‘foreigner’ may need an alternative language
    • a eyes-busy person may need a text description of an image.
  • Digital Resource Description (DRDs)
    • Display:
      • how the resource can be presented and structured,
    • Control:
      • how the resource can be controlled and operated, and
    • Content:
      • what supplementary or alternative resources are supplied with the resource.
  • Basic DRD metadata includes:
    • Access Mode: vision, hearing, touch, text
    • Access Mode Usage: informative or ornamental
    • Display: amenability of a resource to transformation of the display
    • Control: how the method of control is flexible
    • Alternatives: any known alternatives
  • and, where appropriate,
    • Components: any parts that make up this resource (a sound file, an image, etc.) or a composite resource of which it is a part
    • Hazards: any dangerous characteristics
    • Support tools: electronic tools associated with the resource (calculator, dictionary, etc.)
  • & DRD for alternatives also includes:
    • Identity of the original resource
    • Type: kind of alternative
    • Extent: extent of coverage of original resource
    • Detailed description of the alternative: description of its characteristics necessary for matching it to details of the PNP.
  • AfA is an approach … PNP DRD  Dlfkng fg jhgj fglhk fgh Rt hrtj hlkjg hklj thkkj tt Rt grlkthklj thk thl kjrthk Rthnk tlhkk jthk rth th lrt Framework PNP DRD
  • Resource metadata
  • With abstract models …
  • The conversations flow …
  • Multi-lingual/multi-cultural
    • Definition of languages and cultures
    • etc….
  • Accessibility of events and places, ….
    • Location-based
      • Location dependent
      • Location independent
    • What divisions?
      • Physical needs?
      • Electronic needs?
  • Thank you!
    • To participate, please contact me…
      • [email_address]
      • [email_address]
    • Check the new standards and work at
      • http://dublincore.org/groups/access