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Timothy J. Brailsford

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Publications by Timothy J. Brailsford (bibliography)

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2010
 
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Goulding, James O., Brailsford, Timothy J. and Ashman, Helen L. (2010): Hyperorders and transclusion: understanding dimensional hypertext. In: Proceedings of the 21st ACM Conference on Hypertext and Hypermedia 2010. pp. 201-210.

ZigZag is a unique hyperstructural paradigm designed by the hypertext pioneer Ted Nelson. It has piqued a lot of interest in the hypertext community in recent years because of its aim of revolutionizing electronic access to information and knowledge bases. In ZigZag information is stored in cells that are arranged into lists organized along unlimited numbers of intersecting sets of associations called dimensions. To this infrastructure a mechanism of transclusion is added, allowing the data stored in cells to span, and hence be utilized, in different contexts. Proponents of ZigZag claim that it is a flexible and universal structure for information representation, and yet the system has not been widely adopted and has been implemented even more rarely. In this paper we address the question of whether there are intrinsic theoretical reasons as to why this is the case. While the basic features and specifications of ZigZag are well known, we delve in to the less understood area of its theoretical underpinnings to tackle this question. By modeling ZigZag within the framework of set theory we reveal a new class of hyperstructure that contains no referencable link objects whatsoever, instead grouping non-referencable binary associations into disjunct but parallel sets of common semantics (dimensions). We go on to further specialize these "dimensional models" into sets of finite partial functions, which are closed over a single domain, isolating the new class of hyperstructures we are calling hyperorders. This analysis not only sheds light on the benefits and limitations of the ZigZag hypermedia system, but also provides a framework to describe and understand a wider family of possible hyperstructure models of which it is an early example. Characteristics of Zigzag's transclusion mechanisms are also investigated, highlighting a previously unrecognized distinction, and potential irrevocable conflict, between two distinct uses of content reuse: instance and identity transclusion.

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

2001
 
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Moore, Adam, Brailsford, Timothy J. and Stewart, Craig D. (2001): Personally tailored teaching in WHURLE using conditional transclusion. In: Hypertext'01 - Proceedings of the Twelfth ACM Conference on Hypertext and Hypermedia August 14-18, 2001, Aarhus, Denmark. pp. 163-164.

The emergence of Technology Based Learning has generated a number of pedagogic problems related to learner diversity.. In this paper we present an interim snapshot of a prototype XSLT / XML hypermedia learning environment able to respond adaptively to individual learner profiles using conditional transclusion.

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

 
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Changes to this page (author)

03 Nov 2010: Modified
28 Apr 2003: Added

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Jul 24

There is no reason for any individual to have a computer in his home

-- Ken Olson

 
 

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!