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We present a technique for evaluating the usability and effectiveness of ambient displays. Ambient displays are abstract and aesthetic peripheral displays portraying non-critical information on the periphery of a user's attention. Although many innovative displays have been published, little existing work has focused on their evaluation, in part because(More)
The greatest contributor of CO2 emissions in the average American household is personal transportation. Because transportation is inherently a mobile activity, mobile devices are well suited to sense and provide feedback about these activities. In this paper, we explore the use of personal ambient displays on mobile phones to give users feedback about(More)
Traditionally, computer interfaces have been confined to conventional displays and focused activities. However, as displays become embedded throughout our environment and daily lives, increasing numbers of them must operate on the periphery of our attention. <i>Peripheral displays</i> can allow a person to be aware of information while she is(More)
In this paper, we investigate how the choice of media for capture and access affects the diary study method. The diary study is a method of understanding participant behavior and intent <i>in situ</i> that minimizes the effects of observers on participants. We first situate diary studies within a framework of field studies and review related literature. We(More)
We present a new system, called Cirrin, for pen input of ASCII characters using word-level unistrokes. Our system addresses the tradeoff between speed and accuracy of pen-based text entry by substituting precision on the part of the user for ease of recognition on the part of the computer. Cirrin supports ease of recognition by the computer combined with(More)
If applications were able to detect a user's expertise, then software could automatically adapt to better match exper-tise. Detecting expertise is difficult because a user's skill changes as the user interacts with an application and differs across applications. This means that expertise must be sensed dynamically, continuously, and unobtrusively so as not(More)
Computer scientists have a role to play in combating global climate change. Global climate change is one of the most pressing problems of our time. Government agencies, universities, and businesses are starting to step up and invest in research, but even more change is needed, ranging from standards and policies to research innovations and new businesses.
Information about the location and size of the targets that users interact with in real world settings can enable new innovations in human performance assessment and soft-ware usability analysis. Accessibility APIs provide some information about the size and location of targets. How-ever this information is incomplete because it does not sup-port all(More)
What role can social networking websites play in supporting large-scale group action and change? We are proposing to explore their use in supporting individual reduction in personal energy consumption. Here we summarize some existing uses of social networking on the web and propose an approach that integrates feedback about ecological footprint data into(More)
Understanding how pointing performance varies in real world computer use and over time can provide valuable insight about how systems should accommodate changes in pointing behavior. Unfortunately, pointing data from individuals with pointing problems is rarely studied during real world use. Instead, it is most frequently evaluated in a laboratory where it(More)