This paper describes research that investigates the use of a technology designed to support young children's collaborative artifact creation in outdoor environments. Collaboration while creating knowledge artifact...
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This paper describes research that investigates the use of a technology designed to support young children's collaborative artifact creation in outdoor environments. Collaboration while creating knowledge artifacts is an important part of children's learning, yet it can be limited while exploring outdoors. The construction of a joint representation often occurs in the classroom after the experience, where further investigation and observation of the environment is not possible. This paper describes a research study where collaborative technology was developed, used by children, and evaluated in an authentic setting - a U.S. National Park. Copyright 2006 ACM.
In this paper we describe the goals of a one-day workshop to be held at CHI 2006 whose goal is to form an action plan for the SIGCHI U.S. Public Policy committee for the next year.
ISBN:
(纸本)1595932984
In this paper we describe the goals of a one-day workshop to be held at CHI 2006 whose goal is to form an action plan for the SIGCHI U.S. Public Policy committee for the next year.
A large number of biclustering methods have been proposed to detect patterns in gene expression data. All these methods try to find some type of biclusters but no one can discover all the types of patterns in the data...
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computer supported collaborative learning activities involve combination of complex software tools that often need to interoperate in a wider context of learning. This paper proposes a data model that accommodates req...
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computer supported collaborative learning activities involve combination of complex software tools that often need to interoperate in a wider context of learning. This paper proposes a data model that accommodates requirements of typical collaborative learning situations and facilitates interoperability of tools and interchange of products of collaboration and evaluation data. The model has been tested against various typical tools used for both synchronous and asynchronous collaboration of groups of students
iSonic is an interactive sonification tool for vision impaired users to explore geo-referenced statistical data, such as population or crime rates by geographical regions. Users use a keyboard or a smooth surface touc...
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ISBN:
(纸本)1595931597
iSonic is an interactive sonification tool for vision impaired users to explore geo-referenced statistical data, such as population or crime rates by geographical regions. Users use a keyboard or a smooth surface touchpad to interact with coordinated map and table views of the data. The integrated use of musical sounds and speech allows users to grasp the overall data trends and to explore the data to get more details. Scenarios of use are described.
When faced with a challenging goal, knowledge workers need to concentrate on their tasks so that they move forward toward completion. Since frustrations, distractions, and interruptions can interfere with their smooth...
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The importance of play in young children's lives cannot be minimized. From teddy bears to blocks, children's experiences with the tools of play can impact their social, emotional, physical, and cognitive devel...
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ISBN:
(纸本)1595930965
The importance of play in young children's lives cannot be minimized. From teddy bears to blocks, children's experiences with the tools of play can impact their social, emotional, physical, and cognitive development. Today, the tools of play include desktop computers and computer-enhanced physical environments. In this paper, we consider the merits of desktop and physical environments for young children (4-6 years old), by comparing the same content-infused game in both contexts. Both quantitative and qualitative methods are used for data collection and analysis. Copyright 2007 ACM.
Speed dependent automatic zooming (SDAZ) is a promising refinement to scrolling in which documents are automatically zoomed-out as the scroll rate increases. By automatically zooming, the visual flow rate is reduced e...
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ISBN:
(纸本)1581139985
Speed dependent automatic zooming (SDAZ) is a promising refinement to scrolling in which documents are automatically zoomed-out as the scroll rate increases. By automatically zooming, the visual flow rate is reduced enabling rapid scrolling without motion blur. In order to aid SDAZ calibration we theoretically and empirically scrutinise human factors of the speed/zoom relationship. We then compare user performance with four alternative text-document scrolling systems, two of which employ automatic zooming. One of these systems, which we term 'DDAZ', is based on van Wijk and Nuij's recent and important theory that calculates optimal pan/zoom paths between known locations in 2D space, van Wijk and Nuij suggested that their theory could be applied to scrolling, but did not implement or test their formulaic suggestions. Participants in our evaluation (n=27) completed scrolling tasks most rapidly when using SDAZ, followed by DDAZ, normal scrollbars, and traditional rate-based scrolling. Workload assessments and preferences strongly favoured SDAZ. We finish by examining issues for consideration in commercial deployments. Copyright 2005 ACM.
PaperLens is a novel visualization that reveals trends, connections, and activity throughout a conference community. It tightly couples views across papers, authors, and references. PaperLens was developed to visualiz...
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ISBN:
(纸本)1595930027
PaperLens is a novel visualization that reveals trends, connections, and activity throughout a conference community. It tightly couples views across papers, authors, and references. PaperLens was developed to visualize 8 years (1995-2002) of InfoVis conference proceedings and was then extended to visualize 23 years (1982-2004) of theCHI conference proceedings. This paper describes how we analyzed the data and designed PaperLens. We also describe a user study to focus our redesign efforts along with the design changes we made to address usability issues. We summarize lessons learned in the process of design and scaling up to the larger set of CHI conference papers.
The EM algorithm heavily relies on the interpretation of observations as incomplete data but it does not have any control on the uncertainty of missing data. To effectively reduce the uncertainty of missing data, we p...
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