Browsing by Author "Chen, Xiang 'Anthony'"

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    Body-centric Interaction with Mobile Devices
    (ACM, 2012) Chen, Xiang 'Anthony'
    Most current mobile technologies require on-screen operations for interacting with devices' visual contents. However, as a trade-off for mobility, screens usually provide limited space for interactions. To address this problem, I explore Body-Centric Interaction (BCI) -- a design theme that extends a mobile device's interaction space from screen space to body space. My research methodology follows several steps. First, I use a generative bottom-up method -- sketches and proof of concept implementations -- to frame the breadth of the design space. Second, I populate the space with related work, which also unifies what has been done. Third -- which is work in progress -- I explore the depth of promising BCI methods, with the goal of developing, refining and testing particular mobile interaction techniques.
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    SPALENDAR: Visualizing a Group’s Calendar Events over a Geographic Space on a Public Display
    (2012-01-23) Chen, Xiang 'Anthony'; Boring, Sebastian; Carpendale, Sheelagh; Tang, Anthony; Greenberg, Saul
    Portable paper calendars (i.e., day planners and organizers) have greatly influenced the design of group electronic calendars. Both use time units (hours/days/weeks/etc.) to organize visuals, with useful information (e.g., event types, locations, attendees) usually presented as - perhaps abbreviated or even hidden - text fields within those time units. The problem is that, for a group, this visual sorting of individual events into time buckets conveys only limited information about the social network of people. For example, people’s whereabouts cannot be read ‘at a glance’ but require examining the text. Our goal is to explore an alternate visualization that can reflect and illustrate group members’ calendar events. Our main idea is to display the group’s calendar events as spatiotemporal activities occurring over a geographic space animated over time, all presented on a highly interactive public display. In particular, our SPALENDAR (SPAtial CALENDAR) design animates peoples’ past, present and forthcoming movements between event locations as well as their static locations. Details of people’s events, their movements and their locations are progressively revealed and controlled by the viewer’s proximity to the display, their identity, and their gestural interactions with it, all of which are tracked by the public display.