1. 可用性 - 成功的网页用户界面关键
因素：一个便捷的方式
Usability, key factor for the success of web user
interface: an agile approach
Roberto DADDA
Roberto DADDA Milano, November 22, 2012

2. Usability
“The effectiveness, efficiency and satisfaction with
which specified users achieve specified goals in
particular environments.”
● effectiveness: the accuracy and completeness with which specified users can
achieve specified goals in particular environments
● efficiency: the resources expended in relation to the accuracy and completeness of
goals achieved
● satisfaction: the comfort and acceptability of the work system to its users and other
people affected by its use
Roberto DADDA Milano, November 22, 2012

3. 可用性
“ 指定用户在特殊环境下达到指定目标时的有效性，效
率和满意程度”
 有效性：指定用户在特定环境下达到指定目标时的精确性和完整性
 效率：为达到目标精确性和完整性所用的资源
 满意度：为用户和其他相关人员带来的工作系统舒适度和可接受程度。
Roberto

4. Usable,
a many-sided
concept
Functional (it does what it is claimed to do)
●
Reliable (it works consistently)
●
Usable (it works in a way that is consistent with the user's expectations)
●
Meaningful (it does something important or valuable)
●
Pleasurable (it is enjoyable to use)
●
Roberto DADDA Milano, November 22, 2012

5. 可用性，
一个多面概念

功能性（能达到承诺的各项功能）

可靠性（能不间断地运作）

可用性（符合用户的期望值）

有意义（所做的是重要的或有价值的）

娱乐性（愉快的使用过程）
Roberto

6. Roberto DADDA Milano, November 22, 2012

7. Ergonomics
Roberto DADDA Milano, November 22, 2012

8. Roberto DADDA Milano, November 22, 2012

9. Roberto DADDA Milano, November 22, 2012

10. Roberto DADDA Milano, November 22, 2012

11. Roberto DADDA Milano, November 22, 2012

12. human processor model
Roberto DADDA Milano, November 22, 2012

13. Roberto DADDA Milano, November 22, 2012

14. Roberto DADDA Milano, November 22, 2012

15. ●Add value via Web
●Benefit and usability greater than phone call
●Find-Choose-How to-Track
●On site test
●3.5 visitors/day
●Dismissing 80% of call center workforce
Roberto DADDA Milano, November 22, 2012

16. Roberto DADDA Milano, November 22, 2012

17. ✗ After reworking for Christmas +80% (average 40%)
✗ 300.000 repeat customers (+67%)
Roberto DADDA Milano, November 22, 2012

18. Roberto DADDA Milano, November 22, 2012

19. Unusable!
Roberto DADDA Milano, November 22, 2012

20. Roberto DADDA Milano, November 22, 2012

21. Roberto DADDA Milano, November 22, 2012

22. Roberto DADDA Milano, November 22, 2012

23. Roberto DADDA Milano, November 22, 2012

24. Roberto DADDA Milano, November 22, 2012

25. Roberto DADDA Milano, November 22, 2012

26. Roberto DADDA Milano, November 22, 2012

27. Not always easy!
Roberto DADDA Milano, November 22, 2012

28. Roberto DADDA Milano, November 22, 2012

29. Roberto DADDA Milano, November 22, 2012

30. Roberto DADDA Milano, November 22, 2012

31. Roberto DADDA Milano, November 22, 2012

32. Roberto
DADDA
October 26, 2011 PBZ - Zagreb 32

33. Roberto
DADDA
October 26, 2011 PBZ - Zagreb 33

34. Roberto DADDA Milano, November 22, 2012

35. Roberto DADDA Milano, November 22, 2012

36. Roberto DADDA Milano, November 22, 2012

37. Surface
Skeleton
Structure
Scope
Strategy
Roberto DADDA Milano, November 22, 2012

38. user tasks:
Surface • enter numbers
• enter text
• enter formulas
• format cells
Skeleton • sort information
• filter information
• aggregate information
Structure • graph data
• save data
• import data
Scope • export data
• print
• …..
Strategy
Roberto DADDA Milano, November 22, 2012

39. Surface
task
Skeleton panes
Structure modal dialogs
Scope
modal wizards
Strategy
Roberto DADDA Milano, November 22, 2012

40. Roberto
Surface DADDA
Skeleton
Structure
Scope
Strategy
May 14-15, 2012 Agile Croatia Conference - Zadar 40

41. Surface
Skeleton
Structure
Scope
Strategy
Roberto DADDA Milano, November 22, 2012

42. Do not focus on tools
Roberto DADDA Milano, November 22, 2012

43. Roberto DADDA Milano, November 22, 2012

44. Roberto DADDA Milano, November 22, 2012

45. Roberto DADDA Milano, November 22, 2012

46. Roberto DADDA Milano, November 22, 2012

47. roberto@dadda.it www.dadda.it
robertodadda
Roberto DADDA Milano, November 22, 2012