User interfaces presentation


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User interfaces presentation

  1. 1. Somipam R. Shimray VI semester Pondicherry University
  2. 2. Introduction  Traditional libraries are not easy to use effectively.  Contemporary technologies like XML databases; Internet and Web 2.0 provide an excellent environment to disseminate the multi-media information to the user by breaking the physical boundary barriers.  Digital Libraries (DL) provide an infrastructure for creating, structuring, storing, organizing, processing, retrieving, and distributing multimedia digital information via Internet.
  3. 3. User Interface (UI)  A function of the operating system that allows individuals to access and command the computer.  User Interface (UI) is the junction between a user and a computer program.  UI is the means by which information is transferred between the user and the computer and vice versa (Mitchell, 1990).  Well design UI provide users to find and use available information effectively and efficiently.  The UI key factor for the success of a product.
  4. 4.  The architecture of a DL is made up of four components: user interface, repository, handle system and search system.
  5. 5. DL Search Interfaces  Simple and  Sophisticated (Advance) UI. Simple search interfaces of Virginia Tech ETDs
  6. 6. DL Search Interfaces  Advance search interfaces of Virginia Tech ETDs
  7. 7. Digital Library interfaces and browsing  Browse screen 1
  8. 8. Digital Library interfaces and browsing  Browse screen 2
  9. 9. User Interface Design Principles  Designing UI for digital libraries is a complex process.  Careful consideration of both system and user characteristics is the key to success for effective design. 1) Consistency  Layout, instruction, fonts and color should be used consistently throughout the interface. 2) Simple  DL User Interface should be simple and straight forward as humans have a very short-term memory load.  Basic functions should be immediately apparent, while advanced functions may be less obvious to new users.  Functions like Copy, Print, and Save etc. should be included only if a task analysis shows need/necessity for them.
  10. 10. User Interface Design Principles 3) Support  DL User Interface should provide users to control over the DL. (it has to enable the users to accomplish tasks using any sequence of steps that they would naturally use)  UI of a system should support for different tasks. (expert & novices) 4) Permit reversal of action  User should be able to undo or modify actions, example modify queries or back to previous state in a search session. 5) Provide plenty of space  Lot of space should be made available for entering text in search boxes.
  11. 11. User Interface Design Principles 6) Familiar  The UI of DL should be familiar to its users by allowing them to build on past knowledge.  Users should not have to learn new things to perform familiar tasks. 7) Informative Feedback  For minor and frequent actions, the feedback could be understated.  For major actions, for instance the changing of passwords or error messages, the feedback should be in the form of pop-ups or vibrating noises to alert the user of the situation. 8) Prevent Errors  The system should be designed in such a way that user cannot make serious errors.  Any avenue of making errors should be minimized.  User should be able to rectify errors easily and all error message should be clear and specific.
  12. 12. User Interface Design Principles 9) Multimedia Support  Visual representation facilitates rapid and easy communication.  Images, audio, video and audio-video etc. 10) Flexible  Most of the DLs are accessible to users through Internet only.  Possibly normal/home user’s connectivity of Internet is less in speed.  Flexible and simple without having heavy and unnecessary graphics which causes burden on network traffic and unnecessary delay. 11) Zoom Support  Sections of the collection, or zoom in to see every detail.
  13. 13. User Interface Design Principles 12) Accuracy  Poor display of information, spelling errors and grammatical errors display poor maintenance and it affects the site’s credibility.  UI of DL should provide accurate information as much as possible to the user in a proper display mode. 13) Sharing and Reusing of Information  In a computerized environment, the searches of users can be easily recorded and re-used.
  14. 14. User Interface Design Principles 14) Multilingual Support  At present most of the digital libraries are portals. The availability of knowledge and information is not only in one language; hence the UI of DL must support the multilingual support. 15) Platform Independent  Digital libraries are running on Internet, the user’s environment may not be the same.  Adoptable to all types of environments. 16) Future Plug-ins Support  Development in technologies and ever increasing human needs are providing new types of information access.  To support future information needs the UI of DL must be capable and adoptable for future developments.
  15. 15.  No click (dcit) 
  16. 16. Benefit of Good UI  Fewer error  User return  Increase user satisfaction
  17. 17. CONCLUSSION  The increasing usage of digital libraries poses a new challenge for user interface development.  Designing a user interface involves many professionals such as software engineers, graphic designers, human factor specialists, and technical writers, and statistical consultants.  User-friendly UI speed up the user's work.  UI is the key factor for the success of a product.
  18. 18. References  Arms, W. Y. (2005). Digital Library. Delhi: Ane Books.  Chowdhury, G.G & Chodhury, S. (2003). Introduction to digital libraries. London: Facet publication.  Lesk, M. (2005). Understanding Digital Libraries (217-231 ed.). San Francisco: Elsevier.  Sastry, H., & Reddy, L. (2009). User Interface Design Principles for Digital Libraries. International Journal of Web Applications, 1(2), 86- 90.