Digital accessibility course – week 4

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This week is about making web content accessible.

Although I am familiar with HTML in my work, I have to check my knowledge again by reviewing the Web Content Accessibility Guideline (WCAG2.0) and the Web Accessibility Tutorials. I am glad to read the difference between WCAG1.0 and WCAG2.0 too. I realised that I still make mistakes when using “alt” to describe image.

The WCAG2.0 provides 12 guidelines and 4 principles for creating accessible web content. As more and more multimedia resources added into our e-learning system, I noticed the guideline 1.2 “Time-based Media: Provide alternatives for time-based media”. It’s very useful and can help us to reduce accessible barriers when creating the online resources.

With WAI-ARIA, developers can make advanced web applications accessible and usable to people with disabilities. Reading the Authoring Tool Accessibility Guidelines (ATAG), I started to think if Xerte Online Toolkit (1) has made the authoring tool itself accessible, and (2) helps authors produce accessible content.

There are 3 levels of conformance:

  • Level A (lowest): It is the minimum level of conformance, which means the web page satisfies all the Level A Success Criteria, or a conforming alternate version is provided.
  • Level AA: The Web page satisfies all the Level A and Level AA Success Criteria, or a Level AA conforming alternate version is provided.
  • Level AAA (highest): The Web page satisfies all the Level A, Level AA and Level AAA Success Criteria, or a Level AAA conforming alternate version is provided.

The important thing to know is that WCAG2.0 does not cover all accessibility problems, therefore conducting conformance checking of WCAG2.0 does not prove your website support accessibility to everyone.

The best way of testing a website accessibility is to combine the conformance testing and user testing as both ways have pros and cons.

Conformance testing includes two types testing below. However, it does not involve real users, but user testing may be time consuming, expensive and having difficulties to find suitable real users.

  • automatic testing, which is using programming to test. You can use WAVE and AChecker.
  • manual testing, which is experts inspection.

Through an example of improvement of a web site by applying the WCAG 2.0, I see the differences between applying WCAG2.0 and not applying it. It’s a good way to make us think about the online resources that we have developed, and what we can do.

Similar to previous weeks, I learnt some useful resources:


Test broadband

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I applied a new broadband recently. So become curious about bandwidth and its connect quality.

Here a list of tools that help me to check my broadband.

  • Broadband speed tester on the LandlinesSaver website – tells the upload speed and download speed of your broadband according to your own use such as gaming, photos, film watching.
  • Broadband speed test on the moneysupermarket website – tells your download speed,upload speed and other broadband deals in your area.
  • Broadband speed test on the redcomdu website – tells your IP, download speed and upload speed. It describes broadband details and compares other broadband deals in your area.
  • Broadband speed test on the Uswitch website – tells your IP, download speed and upload speed. It provides top 10 broadband deals in your area.

Text 2.0 project

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Using an eye tracker, we know the reading progress across a page, is it a cool idea? Text 2.0 project creates a eye tracking apps using HTML, CSS and JavaScript, as well as some diagnosis and related tools. It was developed by Ralf Biedert from the German Research Center for Artificial Intelligence.

My interest is that how precise it is? I think the technology will be useful for a lecturer to deliver a big lecture, for people to follow a presentation in a conference, or for teachers to see how students read and learn.

The eWorld 2011 Awards

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The eWorld 2011 Awards have been instituted with the primary aim of felicitating and acknowledging unique and innovative initiatives in the use of Information and Communication Technology for Development (ICT4D). These awards would be instrumental in promoting the most innovative initiatives in the domain of ICT4D and to spread awareness about the role of ICT in addressing social concerns in the domain of governance and health.

Date: 1st – 3rd August 2011

Venue: New Delhi, India