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Joel Lanir

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Publications by Joel Lanir (bibliography)

» 2009 «

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Lanir, Joel, Greenberg, Saul and Fels, Sidney (2009): Supporting transitions in work: informing large display application design by understanding whiteboard use. In: GROUP09 - International Conference on Supporting Group Work 2009. pp. 149-158. Available online

“In this paper, we explore the practice of using a whiteboard for multiple tasks, and specifically how users employ whiteboards to smoothly transition between related sets of tasks. Our study underscores several basic, but important affordances of whiteboards that support this practice, including visual persistence, flexibility of interaction primitives, and their situated physicality. We discuss the implications of these findings for the design of large display applications.”

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» 2008 «

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Lanir, Joel, Booth, Kellogg S. and Findlater, Leah (2008): Observing presenters' use of visual aids to inform the design of classroom presentation software. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 695-704. Available online

“Large classrooms have traditionally provided multiple blackboards on which an entire lecture could be visible. In recent decades, classrooms were augmented with a data projector and screen, allowing computer-generated slides to replace hand-written blackboard presentations and overhead transparencies as the medium of choice. Many lecture halls and conference rooms will soon be equipped with multiple projectors that provide large, high-resolution displays of comparable size to an old fashioned array of blackboards. The predominant presentation software, however, is still designed for a single medium-resolution projector. With the ultimate goal of designing rich presentation tools that take full advantage of increased screen resolution and real estate, we conducted an observational study to examine current practice with both traditional whiteboards and blackboards, and computer-generated slides. We identify several categories of observed usage, and highlight differences between traditional media and computer slides. We then present design guidelines for presentation software that capture the advantages of the old and the new and describe a working prototype based on those guidelines that more fully utilizes the capabilities of multiple displays.”

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Lanir, Joel and Booth, Kellogg S. (2008): MultiPresenter: a presentation system for (very) large display surfaces. In: El-Saddik, Abdulmotaleb, Vuong, Son, Griwodz, Carsten, Bimbo, Alberto Del, Candan, K. Selcuk and Jaimes, Alejandro (eds.) Proceedings of the 16th International Conference on Multimedia 2008 October 26-31, 2008, Vancouver, British Columbia, Canada. pp. 519-528. Available online

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Lanir, Joel and Booth, Kellogg S. (2008): Presentation tools for high-resolution and multiple displays. In: Proceedings of the 2008 ACM International Workshop on Human-Centered Multimedia 2008. pp. 61-68. Available online

“Presentation software was originally developed as a way to design overhead transparencies to be used as visual aids in talks. While much of the software has since then changed, the basic design using the slide metaphor still follows the original purpose and does not accommodate the different needs and uses presentation software has today. We describe our experiences and design process in developing MultiPresenter -- a presentation system that works on multiple displays designed to promote audiences' learning. Our human-centered approach includes observing instructors use of traditional visual aids such as whiteboards and blackboards as well as newer aids such as computer-generated slide presentations, interviews with instructors during the requirement gathering phase, and multiple iterations of design and testing during the implementation phase. We describe our current and future plans for evaluating and extending our system. Evaluations focus on the deployment of MultiPresenter in actual classrooms to gain valuable feedback from both instructors and students on our design decisions and on the effects that our system has on learning.”

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» 2007 «

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Huggett, Michael and Lanir, Joel (2007): Static reformulation: a user study of static hypertext for query-based reformulation. In: JCDL07: Proceedings of the 7th ACM/IEEE-CS Joint Conference on Digital Libraries 2007. pp. 319-328. Available online

“Hypertext allows users to navigate between related materials in digital libraries. The most fundamental automated hypertexts are those constructed on the basis of semantic similarity. Such hypertexts have been evaluated by a variety of means, but seldom by real users given simulated real-world tasks. We claim that while other methods exist, one of the best ways to prove the usefulness of hypertext is to show the benefits for users performing realistic tasks. We compare the reformulation of queries that users perform in keyword searching, to the query reformulation implicit in browsing between documents linked by similarity of content. We find that a static automatically-constructed similarity hypertext provides useful linking between related items, improving the retrieval of targets when used to augment standard keyword search.”

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Changes to this page (author)

11 Feb 2010: Enabled abstracts to be shown on Joel Lanir's author page.
23 Jul 2009: Author was edited

17 Jun 2009: Author was edited
02 Jun 2009: Author was edited
12 May 2008: Author was edited
24 Jul 2007: Author was added to the bibliography

Publication statistics

Publication period:2007-2009
Publication count:5
Number of co-authors:5

Productive colleagues

Joel Lanir's 3 most productive colleagues in number of publications:

Saul Greenberg:112
Kellogg S. Booth:46
Sidney Fels:24

Collaboration count

Number of publications with 3 favourite co-authors:

Kellogg S. Booth:3
Sidney Fels:1
Saul Greenberg:1

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Learn more about Joel Lanir:
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- ACM
- CSB

Conference Calendar

Mar 21

WritersUA Conf. for Software User Assistance

Mar 22

UX People

Mar 22

ETRA '10 - Eye Tracking Research & Applications Symp.

Mar 20

“ 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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