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ReferencesNavigation arrowAuthorsNavigation arrowDouglas Elliffe
Jun 18

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24

 
 

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Douglas Elliffe

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Publications by Douglas Elliffe (bibliography)

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2008
 
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Yeung, Louise, Plimmer, Beryl, Lobb, Brenda and Elliffe, Douglas (2008): Effect of Fidelity in Diagram Presentation. In: Proceedings of the HCI08 Conference on People and Computers XXII 2008. pp. 35-44.

“The visual fidelity (fidelity) of a design diagram affects perception and design performance. Hand-drawn diagrams are more effective working documents for early design tasks such as user interface designs than the equivalent computer-prepared formal representation. However people prefer more formal representations because they feel that hand-drawn diagrams look unprofessional. Sketch-based design tools make it possible to present partially tidied designs. We have postulated intermediary levels of visual fidelity in a systematic manner and implemented these levels into a sketch tool to evaluate the effect of computerization and fidelity on perception and design performance. Our findings show that: performance decreased systematically with increased fidelity; that computer presented designs decreases performance and that performance was decreased by computerization of the hand-drawn diagrams. In contrast, user satisfaction was higher with increasing levels of fidelity. These results pose challenges to the sketch tools community and further questions for effective computer support for early design.”

© All rights reserved Yeung et al. and/or their publisher

2007
 
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Yeung, Louise, Plimmer, Beryl, Lobb, Brenda and Elliffe, Douglas (2007): Levels of formality in diagram presentation. In: Proceedings of OZCHI07, the CHISIG Annual Conference on Human-Computer Interaction November 28-30, 2007, Adelaide, Australia. pp. 311-317.

“The incremental beautification of hand-drawn diagrams is a process that is poorly understood. Thus implementation of beautification techniques in computer-based sketch tools is ad hoc, with most only supporting the ends of the spectrum: hand-drawn and fully formalized. Hand-drawn diagrams are more effective for early design and review but users are more satisfied with formal designs. This suggests that there may be applications for intermediate levels of formality. By understanding the attributes of visual formality it is possible to beautify a diagram progressively, thereby achieving visually consistent intermediate levels of formality. Here we present a taxonomy of the attributes of visual formality and the implementation of this taxonomy into a sketch tool.”

© All rights reserved Yeung et al. and/or ACM Press

 
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Changes to this page (author)

12 Jul 2009: Modified
12 May 2008: Added

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Jun 18

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

Help us help you!

 
 
 
 
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