Stephen Voida
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Publications by Stephen Voida (bibliography)
» 2009 «
Voida, Stephen and Mynatt, Elizabeth D. (2009): It feels better than filing: everyday work experiences in an activity-based computing system. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 259-268. Available online
Activity-based computing represents an alternative to the dominant application- and document-centric model at the foundation of most mainstream desktop computing interfaces. In this paper, we present in-depth results from an in situ, longitudinal study of an activity-based computing system, Giornata. We detail the ways that the specific features of this system influenced the everyday work experiences of a small cohort of knowledge workers. Our analysis provides contributions at several levels of granularity-we provide concrete design recommendations based on participants' reactions to the particular features of the Giornata system and a discussion about how our findings can provide insight about the broader understanding of knowledge work and activity within HCI.
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Voida, Stephen and Greenberg, Saul (2009): WikiFolders: augmenting the display of folders to better convey the meaning of files. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 1679-1682. Available online
Hierarchical file systems and file browsers offer powerful capabilities for managing and organizing folders and files. Yet they lack robust tools for annotating and documenting these files-individually or collectively-with descriptive text. In contrast, Web pages and wikis make it easy to create rich and meaningful narratives around digital artifacts, allowing files to be embedded within explanatory text and images. Unfortunately, considerable effort is required to manage files stored on Web servers and to ensure that the published content remains up-to-date. In this note, we describe WikiFolders, a hybrid system for annotating file folders that draws upon the strengths of both the hierarchical file system and wikis.
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» 2008 «
Voida, Amy, Voida, Stephen, Greenberg, Saul and He, Helen Ai (2008): Asymmetry in media spaces. In: Proceedings of ACM CSCW08 Conference on Computer-Supported Cooperative Work 2008. pp. 313-322. Available online
In any collaborative system, there are both symmetries and asymmetries present in the design of the technology and in the ways that technology is appropriated. Yet media space research tends to focus more on supporting and fostering the symmetries than the asymmetries. Throughout more than 20 years of media space research, the pursuit of increased symmetry, whether achieved through technical or social means, has been a recurrent theme. The research literature on the use of contemporary awareness systems, in contrast, displays little if any of this emphasis on symmetrical use; indeed, this body of research occasionally highlights the perceived value of asymmetry. In this paper, we unpack the different forms of asymmetry present in both media spaces and contemporary awareness systems. We argue that just as asymmetry has been demonstrated to have value in contemporary awareness systems, so might asymmetry have value in media spaces and in other CSCW systems, more generally. To illustrate, we present a media space that emphasizes and embodies multiple forms of asymmetry and does so in response to the needs of a particular work context.
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Goecks, Jeremy, Voida, Amy, Voida, Stephen and Mynatt, Elizabeth D. (2008): Charitable technologies: opportunities for collaborative computing in nonprofit fundraising. In: Proceedings of ACM CSCW08 Conference on Computer-Supported Cooperative Work 2008. pp. 689-698. Available online
This paper presents research analyzing the role of computational technology in the domain of nonprofit fundraising. Nonprofits are a cornerstone of many societies and are especially prominent in the United States, where $295 billion, or slightly more than 2% of the U.S. Gross Domestic Product (i.e. total national revenue), was directed toward charitable causes in 2006. Nonprofits afford many worthwhile endeavors, including crisis relief, basic services to those in need, public education and the arts, and preservation of the natural environment. In this paper, we identify six roles that computational technology plays in support of nonprofit fundraising and present two models characterizing technology use in this domain: (1) a cycle of technology-assisted fundraising and (2) a model of relationships among stakeholders in technology-assisted fundraising. Finally, we identify challenges and research opportunities for collaborative computing in the unique and exciting nonprofit fundraising domain.
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Voida, Stephen, Mynatt, Elizabeth D. and Edwards, W. Keith (2008): Re-framing the desktop interface around the activities of knowledge work. In: Cousins, Steve B. and Beaudouin-Lafon, Michel (eds.) Proceedings of the 21st Annual ACM Symposium on User Interface Software and Technology October 19-22, 2008, Monterey, CA, USA. pp. 211-220. Available online
» 2006 «
Voida, Stephen, Edwards, W. Keith, Newman, Mark W., Grinter, Rebecca E. and Ducheneaut, Nicolas (2006): Share and share alike: exploring the user interface affordances of file sharing. In: Proceedings of ACM CHI 2006 Conference on Human Factors in Computing Systems 2006. pp. 221-230. Available online
With the rapid growth of personal computer networks and the Internet, sharing files has become a central activity in computer use. The ways in which users control the what, how, and with whom of sharing are dictated by the tools they use for sharing; there are a wide range of sharing practices, and hence a wide range of tools to support these practices. In practice, users' requirements for certain sharing features may dictate their choice of tool, even though the other affordances available through that tool may not be an ideal match to the desired manner of sharing. In this paper, we explore users' current practices in file sharing and examine the tools used to share files. Based on our findings, we unpack the features and affordances of these tools into a set of dimensions along which sharing tools can be characterized. Then, we present the set of user interface features we have prototyped in an interface called a sharing palette, which provides a platform for exploration and experimentation with new modalities of sharing. We briefly present the tool as a whole and then focus on the individual features of the sharing palette that support reported styles of sharing.
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» 2005 «
Voida, Stephen, Podlaseck, Mark, Kjeldsen, Rick and Pinhanez, Claudio (2005): A study on the manipulation of 2D objects in a projector/camera-based augmented reality environment. In: Proceedings of ACM CHI 2005 Conference on Human Factors in Computing Systems 2005. pp. 611-620. Available online
Are the object manipulation techniques traditionally used in head-mounted displays (HMDs) applicable to augmented reality based projection systems? This paper examines the differences between HMD- and projector/camera-based AR interfaces in the light of a manipulation task involving documents and applications projected on common office surfaces such as tables, walls, cabinets, and floor. We report a Wizard of Oz study where subjects were first asked to create gesture/voice commands to move 2D objects on those surfaces and then exposed to gestures created by the authors. Among the options, subjects could select the object to be manipulated using voice command; touching, pointing, and grabbing gesture; or a virtual mouse. The results show a strong preference for a manipulation interface based on pointing gestures using small hand movements and involving minimal body movement. Direct touching of the object was also common when the object being manipulated was within the subjects' arm reach. Based on these results, we expect that the preferred interface resembles, in many ways, the egocentric model traditionally used in AR.
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» 2001 «
MacIntyre, Blair, Mynatt, Elizabeth D., Voida, Stephen, Hansen, Klaus Marius, Tullio, Joe and Corso, Gregory M. (2001): Support for multitasking and background awareness using interactive peripheral displays. In: Marks, Joe and Mynatt, Elizabeth D. (eds.) Proceedings of the 14th annual ACM symposium on User interface software and technology November 11 - 14, 2001, Orlando, Florida. pp. 41-50. Available online
In this paper, we describe Kimura, an augmented office environment to
support common multitasking practices. Previous systems, such as Rooms, limit
users by constraining the interaction to the desktop monitor. In Kimura, we
leverage interactive projected peripheral displays to support the perusal,
manipulation and awareness of background activities. Furthermore, each activity
is represented by a montage comprised of images from current and past
interaction on the desktop. These montages help remind the user of past
actions, and serve as a springboard for ambient context-aware reminders and
notifications.
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Mar 20th, 2010
Changes to this page (author)
21 Feb 2010: Enabled abstracts to be shown on Stephen Voida's author page.12 Jul 2009: Author was edited 09 May 2009: Author was edited
09 May 2009: Author was edited
07 Apr 2009: Author was edited
07 Apr 2009: Author was edited
29 Jun 2007: Author was edited
19 Jun 2007: Author was edited
28 Apr 2003: Added the author to the bibliography