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Peter Moulder

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Publications by Peter Moulder (bibliography)

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2009
 
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Braganza, Cameron, Marriott, Kim, Moulder, Peter, Wybrow, Michael and Dwyer, Tim (2009): Scrolling behaviour with single- and multi-column layout. In: Proceedings of the 2009 International Conference on the World Wide Web 2009. pp. 831-840.

The standard layout model used by web browsers is to lay text out in a vertical scroll using a single column. The horizontal-scroll layout model -- in which text is laid out in columns whose height is set to that of the browser window and the viewer scrolls horizontally -- seems well-suited to multi-column layout on electronic devices. We describe a study that examines how people read and, in particular, the strategies they use for scrolling with these two models when reading large textual documents on a standard computer monitor. We compare usability of the models and evaluate both user preferences and the effect of the model on performance. Also interesting is the description of the browser and its user interface which we used for the study.

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

2002
 
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Hurst, Nathan, Marriott, Kim and Moulder, Peter (2002): Dynamic approximation of complex graphical constraints by linear constraints. In: Beaudouin-Lafon, Michel (ed.) Proceedings of the 15th annual ACM symposium on User interface software and technology October 27-30, 2002, Paris, France. pp. 191-200.

Current constraint solving techniques for interactive graphical applications cannot satisfactorily handle constraints such as non-overlap, or containment within non-convex shapes or shapes with smooth edges. We present a generic new technique for efficiently handling such kinds of constraints based on trust regions and linear arithmetic constraint solving. Our approach is to model these more complex constraints by a dynamically changing conjunction of linear constraints. At each stage, these give a local approximation to the complex constraints. During direct manipulation, linear constraints in the current local approximation can become active indicating that the current solution is on the boundary of the trust region for the approximation. The associated complex constraint is notified and it may choose to modify the current linear approximation. Empirical evaluation demonstrates that it is possible to (re-)solve systems of linear constraints that are dynamically approximating complex constraints such as non-overlap sufficiently quickly to support direct manipulation in interactive graphical applications.

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

 
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Changes to this page (author)

09 Jul 2009: Modified
28 Apr 2003: Added

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URL: http://www.interaction-design.org/references/authors/peter_moulder.html
Jul 25

For us, our most important stakeholder is not our stockholders, it is our customers. We’re in business to serve the needs and desires of our core customer base

-- John Mackey

 
 

Featured chapter

Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess

User Experience and Experience Design !

 
 

Our Latest Books

Kumar and Herger 2013: Gamification at Work: Designing Engaging Business Software...
by Janaki Mythily Kumar and Mario Herger

 
Start reading

Whitworth and Ahmad 2013: The Social Design of Technical Systems: Building technologies for communities...
by Brian Whitworth and Adnan Ahmad

 
Start reading

Soegaard and Dam 2013: The Encyclopedia of Human-Computer Interaction, 2nd Ed....
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

Help us help you!