Publication statistics

Pub. period:2003-2012
Pub. count:7
Number of co-authors:5



Co-authors

Number of publications with 3 favourite co-authors:

M. C. Schraefel:3
Wendy E. Mackay:2
Mathieu Raynal:1

 

 

Productive colleagues

Theophanis Tsandilas's 3 most productive colleagues in number of publications:

Wendy E. Mackay:61
M. C. Schraefel:28
Emmanuel Dubois:24
 
 
 
Jul 29

There is an old English folk saying that goes, "If you can't stand the heat, get out of the kitchen." I have a different approach: Do something about the heat. The folk saying would have us accept the poor designs of the world. Why? After all, if people were responsible for the "heat" in the first place, then people should be able to do something about it. Is the kitchen too hot? Redesign it.

-- Don Norman

 
 

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Theophanis Tsandilas

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Publications by Theophanis Tsandilas (bibliography)

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2012
 
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Tsandilas, Theophanis (2012): Interpreting strokes on paper with a mobile assistant. In: Proceedings of the 2012 ACM Symposium on User Interface Software and Technology 2012. pp. 299-308.

Digital pen technology has allowed for the easy transfer of pen data from paper to the computer. However, linking handwritten content with the digital world remains a hard problem as it requires the translation of unstructured and highly personal vocabularies into structured ones that computers can easily understand and process. Automatic recognition can help to this direction, but as it is not always reliable, solutions require the active cooperation between users and recognition algorithms. This work examines the use of portable touch-screen devices in connection with pen and paper to help users direct and refine the interpretation of their strokes on paper. We explore four techniques of bi-manual interaction that combine touch and pen-writing, where user attention is divided between the original strokes on paper and their interpretation by the electronic device. We demonstrate the techniques through a mobile interface for writing music that complements the automatic recognition with interactive user-driven interpretation. An experiment evaluates the four techniques and provides insights about their strengths and limitations.

© All rights reserved Tsandilas and/or ACM Press

2010
 
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Tsandilas, Theophanis and Mackay, Wendy E. (2010): Knotty gestures: subtle traces to support interactive use of paper. In: Proceedings of the 2010 International Conference on Advanced Visual Interfaces 2010. pp. 147-154.

We introduce the knotty gesture, a simple yet powerful technique for interacting with paper. Knots are tiny circles that can be added to any gesture. Users can leave subtle marks that permit both immediate interaction in the flow of writing and create rich opportunities for future interaction. We identify diverse applications of knotty gestures and explore alternative techniques for interacting with their traces. We conducted two experiments to evaluate the design and recognition heuristics and demonstrated that people can successfully execute knotty gestures, even without feedback. Knotty gestures provide users with a subtle, in-the-flow-of-writing technique for tagging information and subsequently interacting with the paper.

© All rights reserved Tsandilas and Mackay and/or their publisher

 
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Tsandilas, Theophanis, Dubois, Emmanuel and Raynal, Mathieu (2010): Free-space pointing with constrained hand movements. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3451-3456.

Research on pointing devices has shown that rate control is appropriate for isometric and elastic devices but not effective when input control is purely isotonic. Human hand has been generally considered as an isotonic device. Therefore, pointing devices that are directly controlled by hand movements (e.g., the mouse) are based on position rather than rate control. In this work, we study the relevance of rate control in low-resolution input. Taking into account elastic properties of the human wrist, this work explores designs that mix position and rate control when input is handled by constrained hand movements.

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

2009
 
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Tsandilas, Theophanis, Letondal, Catherine and Mackay, Wendy E. (2009): Musink: composing music through augmented drawing. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 819-828.

We focus on the creative use of paper in the music composition process, particularly the interaction between paper and end-user programming. When expressing musical ideas, composers draw in a precise way, not just sketch. Working in close collaboration with composers, we designed Musink to provide them with a smooth transition between paper drawings and OpenMusic, a flexible music composition tool. Musink's built-in recognizers handle common needs, such as scoping and annotation. Users can also define new gestures and associate them with their own or predefined software functions. Musink supports semi-structured, delayed interpretation and serves as a customizable gesture browser, giving composers significant freedom to create their own, individualized composition languages and to experiment with music, on-paper and on-line.

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

2007
 
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Tsandilas, Theophanis and Schraefel, M. C. (2007): Bubbling menus: a selective mechanism for accessing hierarchical drop-down menus. In: Proceedings of ACM CHI 2007 Conference on Human Factors in Computing Systems 2007. pp. 1195-1204.

This paper introduces bubbling menus, a new design for cascading drop-down menus. Bubbling menus combine the bubble cursor [10] with directional mouse-gesture techniques to facilitate the access of certain items in a menu, such as frequently selected items. Through an extensive iterative design process, we explore bubbling menus in the context of adaptive and customizable user interfaces. Unlike other adaptation and customization techniques such as split menus, bubbling menus do not disrupt the original structure of menus and enable the activation of menus far from a menu bar. Results from two evaluation studies presented in the paper show that bubbling menus provide an effective alternative to accelerate menu selections tasks.

© All rights reserved Tsandilas and Schraefel and/or ACM Press

2005
 
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Tsandilas, Theophanis and Schraefel, M. C. (2005): An empirical assessment of adaptation techniques. In: Proceedings of ACM CHI 2005 Conference on Human Factors in Computing Systems 2005. pp. 2009-2012.

The effectiveness of adaptive user interfaces highly depends on the how accurately adaptation satisfies the needs of users. This paper presents an empirical study that examined two adaptation techniques applied on lists of textual selections. The study measured user performance controlling the accuracy of the suggestions made by the adaptive user interface. The results indicate that different adaptation techniques bare different costs and gains, which are affected by the accuracy of adaptation.

© All rights reserved Tsandilas and Schraefel and/or ACM Press

2003
 
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Tsandilas, Theophanis and Schraefel, M. C. (2003): User-controlled link adaptation. In: Proceedings of the Fourteenth ACM Conference on Hypertext 2003. pp. 152-160.

This paper introduces an adaptable hypermedia approach applied to adaptive link annotation techniques. This approach suggests that the combination of direct manipulation with automated link annotation affords greater user control over page adaptation. In turn, this direct control better supports user focus in information discovery tasks. Unlike adaptive-only systems, our approach lets users both define multiple topics of interest and then manipulate how these topics' associated links are presented in a page. We discuss how the approach can be applied both to pages viewed as well as to the user's history list, thereby relieving users from the task of either adding to or organizing bookmarks. We describe the prototype developed to support these manipulations, as well as the adaptive architecture developed to support these controls.

© All rights reserved Tsandilas and Schraefel and/or ACM Press

 
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Changes to this page (author)

23 Nov 2012: Modified
02 Nov 2010: Modified
02 Nov 2010: Modified
09 May 2009: Modified
29 Jun 2007: Modified
23 Jun 2007: Modified
19 Jun 2007: Added

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

Publication statistics

Pub. period:2003-2012
Pub. count:7
Number of co-authors:5



Co-authors

Number of publications with 3 favourite co-authors:

M. C. Schraefel:3
Wendy E. Mackay:2
Mathieu Raynal:1

 

 

Productive colleagues

Theophanis Tsandilas's 3 most productive colleagues in number of publications:

Wendy E. Mackay:61
M. C. Schraefel:28
Emmanuel Dubois:24
 
 
 
Jul 29

There is an old English folk saying that goes, "If you can't stand the heat, get out of the kitchen." I have a different approach: Do something about the heat. The folk saying would have us accept the poor designs of the world. Why? After all, if people were responsible for the "heat" in the first place, then people should be able to do something about it. Is the kitchen too hot? Redesign it.

-- Don Norman

 
 

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!