Web Usablity & Accessibility Standards by Boris Krumov, BlueLink Information Network
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Web Usablity & Accessibility Standards by Boris Krumov, BlueLink Information Network

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Presentation by Boris Krumov, BlueLink Information Network at the third International Conference e-Society.Mk: Web Usablity & Accessibility Standards, November 29, 2007, Skopje Macedonia

Presentation by Boris Krumov, BlueLink Information Network at the third International Conference e-Society.Mk: Web Usablity & Accessibility Standards, November 29, 2007, Skopje Macedonia

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Web Usablity & Accessibility Standards by Boris Krumov, BlueLink Information Network Presentation Transcript

  • 1. Good practices for usability of web applications by the means of acomplishing their goals
  • 2. What is usability?
      • Usability measures the quality of a user's experience when interacting with a product or system—whether a Web site, a software application, mobile technology, or any user-operated device.
      • In general, usability refers to how well users can learn and use a product to achieve their goals and how satisfied they are with that process. Usability, as defined by Joseph Dumas and Janice (Ginny) Redish, means that people who use the product can do so quickly and easily to accomplish their tasks. Usability may also consider such factors as cost-effectiveness and usefulness.
      • A key methodology for carrying out usability is called User-Centered Design.
  • 3. User Centered Design
      • User-centered design (UCD) is an approach for employing usability. It is a structured product development methodology that involves users throughout all stages of Web site development, in order to create a Web site that meets users' needs. This approach considers an organization's business objectives and the user's needs, limitations, and preferences.
      • If your Web site is not useful to users, it will never be used. In order for your Web site to be successful, users must visit the site to find information or accomplish tasks. No matter what objectives you have set for your Web site, it must carefully balance the needs of users and the needs of your organization. If users don't find your Web site helpful, they will not use it, which will, in turn, prevent you from meeting your organization's objectives.
      • From the business side, you can lower operating and redevelopment costs by developing a product, such as a Web site, correctly the first time around.
  • 4. What does usability measure?
      • It is important to realize that usability is not a single, one-dimensional property of a user interface. Usability is a combination of factors including:
      • Ease of learning - How fast can a user who has never seen the user interface before learn it sufficiently well to accomplish basic tasks?
      • Efficiency of use - Once an experienced user has learned to use the system, how fast can he or she accomplish tasks?
      • Memorability - If a user has used the system before, can he or she remember enough to use it effectively the next time or does the user have to start over again learning everything?
      • Error frequency and severity - How often do users make errors while using the system, how serious are these errors, and how do users recover from these errors?
      • Subjective satisfaction – How much does the user like using the system?
  • 5. Common ISO standards How is usability defined?
  • 6. Web standards regarding usability ISO 23973 Reference Model ISO 23973 uses a reference model for web design comprising design, process and evaluation. The Standard itself is focussed on the design domain aspects only. These are: purpose and strategy, content and functionality, navigation and interaction, and presentation and media design. These aspects can be seen as different levels of the overall design process. The other two parts of the model represent the process domain and the evaluation domain. These constitute important aspects for the user-centred development of Web applications but they are not elaborated in this International Standard.
  • 7. Examples of sites with good usability
      • http://www.policy-network.net/
      • Policy Network is an international think-tank dedicated to promoting progressive policies and the renewal of social democracy.
      • http://www.ippr.org/
      • Institute for Public Policy Research - the UK's leading progressive think tank.
      • http://www.ncvo-vol.org.uk/
      • The National Council for Voluntary Organisations - the umbrella body for the voluntary sector in England, working to support the voluntary sector and to create an environment in which voluntary organisations can flourish.
      • http://www.eurodad.org/
      • Eurodad - European network on debt and development, working towards economic policy change to empower the world's poor.
  • 8. opposite examples – sites with not such good usability
    • http://ec.europa.eu/index_en.htm
    • European Commission
    • http://www.moew.government.bg/
    • Ministry of Environment and waters, Bulgaria
  • 9. Curious facts Oliver Reed Smoot, Jr. was Chairman of the American National Standards Institute (ANSI) from 2001 to 2002 and President of the International Organization for Standardization ( ISO) from 2003 to 2004. He received his Bachelor of Science from MIT and his Juris Doctor from Georgetown University. As a pledge of MIT's Lambda Chi Alpha fraternity in 1958, Smoot's height was used to measure the length of the Harvard Bridge. As he lay on the Harvard Bridge (that carries Massachusetts Avenue across the Charles River), markers were made at each distance between his head and feet. The bridge was determined to be 364.4 smoots (and one ear) in length, and the markers remain to this day. Smoot gave a speech to the hearing to the House Science Committee's Subcommittee on Technology on March 20, 2000, entitled “The Role of Technical Standards in Today's Society and in the Future".
  • 10. Questions? Boris Krumov, web developer BlueLink informational network http://bluelink.net