AfA - Liddy Nevile

Access For All Accessibility: an inclusive approach Liddy Nevile La Trobe University

My argument
Being inclusive is a fundamental requirement of integrity
Inclusion requires adaptability for personal and device differences
Adaptability satisfies short term inclusion and long term preservation problems
Quality processes and efficiency certification are essential for the production of inclusive resources (and services) that will also satisfy preservation needs.

How do we know what he needs?

How do we know what he can do? Braille Jaws Zoomtext

How do we know what they need?

Do we need to know?

How do we know what they need? they

Can we trust them to know what they need?

http://www.humanfactors.com/downloads/accessibletesting.asp

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

Accessibility accommodations
By lowest common denominator?
W3C WAI standards
By presumed audience?
Guess work by site developer
By individual user? by context?
AccessForAll standards

Universal accessibility
The World Wide Web Consortium’s Web Accessibility Initiative’s
Web Content Accessibility Guidelines
Authoring Tools Accessibility Guidelines
User Agent Accessibility Guidelines
Accessibility implications of all W3C recommendations

Disabilities Rights Commission (UK)
2003 tests of 1000 UK sites
808 failed to reach minimum reqs of WCAG
100 conformant sites had 585 accessibility and usability problems
45% of problems not violations of WCAG

Disabilities Rights Commission (UK)
No guidelines will make all sites accessible for everyone but anyway, not all sites will be accessible
So
A new approach has been developed (known as AccessForAll approach) to complement the W3C WAI work

Accessibility metadata
Even if resources are accessibility standards conformant, those that suit an individual user are:
not necessarily accessible to her
not discoverable if they are accessible
Resources that are not ‘universally’ accessible
might satisfy her needs and/or preferences
might have been made accessible retrospectively
might be made accessible just-in-time

AccessForAll metadata
3 main components:
Metadata to describe needs and preferences of user
Metadata to describe accessibility characteristics of resources
Accessibility service to match resources to needs and preferences

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.

Simple PNP descriptions

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.

The Matching Process
in a closed environment

The Matching Process
in a distributed world

Proving the concept
ABC video on demand

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

AfA - Liddy Nevile

by ozewai on Jun 04, 2008

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AfA - Liddy Nevile — Presentation Transcript