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!

 
 

Bjorn Freeman-Benson

Add description
Add publication

Publications by Bjorn Freeman-Benson (bibliography)

 what's this?
1996
 
Edit | Del

Borning, Alan, Anderson, Richard and Freeman-Benson, Bjorn (1996): Indigo: A Local Propagation Algorithm for Inequality Constraints. In: Kurlander, David, Brown, Marc and Rao, Ramana (eds.) Proceedings of the 9th annual ACM symposium on User interface software and technology November 06 - 08, 1996, Seattle, Washington, United States. pp. 129-136.

Inequality constraints are useful for specifying various aspects of user interfaces, such as constraints that one window is to the left of another, or that an object is contained within a rectangle. However, current local propagation constraint solvers can't handle inequality constraints. We present Indigo, an efficient local propagation algorithm for satisfying acyclic constraint hierarchies, including inequality constraints.

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

1993
 
Edit | Del

Freeman-Benson, Bjorn (1993): Converting an Existing User Interface to Use Constraints. In: Hudson, Scott E., Pausch, Randy, Zanden, Brad Vander and Foley, James D. (eds.) Proceedings of the 6th annual ACM symposium on User interface software and technology 1993, Atlanta, Georgia, United States. pp. 207-215.

Constraints have long been championed as a tool for user interface construction. However, while certain constraint systems have established a user community, constraint-based user interfaces have not yet been widely adopted. The premise of this paper is that a major stumbling block to their pervasive use has been the emphasis on designing new interface toolkits rather than augmenting existing ones. The thesis of the work described in this paper is that it is possible, and practical, to convert an existing user interface written in an imperative programming language into a similar user interface implemented with constraints. This thesis is proved by example: the conversion of HotDraw into CoolDraw.

© All rights reserved Freeman-Benson and/or ACM Press

1991
 
Edit | Del

Augeraud, Michel and Freeman-Benson, Bjorn (1991): Dynamic Objects. In: Jong, Peter de (ed.) Proceedings of the Conference on Organizational Computing Systems 1991 November 6-8, 1991, Atlanta, Georgia, USA. pp. 135-140.

Object oriented representations are very convenient to describe real world. But real world is essentially dynamic. In object oriented languages the unique instantiation class condition is a limit of dynamicity expression. In this paper we give semantical and structural definition of objects with structure changes over time. So we allow the following properties: * the ability to refer to past and future states of the system (time viewing), * the ability to change the structure and behavior of an object or the entire system (evolution), * the ability to model semantic relations between objects, not only in the current time interval, but also between time intervals (i.e., the past and the future (inferences)).

© All rights reserved Augeraud and Freeman-Benson and/or ACM Press

 
Add publication
Show list on your website
 

Join our community and advance:

Your
Skills

Your
Network

Your
Career

 
 
 
 

Changes to this page (author)

28 Apr 2003: Added

Page Information

Page maintainer: The Editorial Team
URL: http://www.interaction-design.org/references/authors/bjorn_freeman-benson.html
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!