William Chao

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This poster presents an exploratory field study of a VAST 2007 contest entry. We applied Cognitive Task Analysis (CTA), grounded theory (GT), and Activity Theory (AT), to analysis of field notes and interviews from participants. Our results are described in the context of activity theory and sensemaking, two theoretical perspectives that we have found to be(More)
Natural, technological and man-made disasters are typically followed by chaos that results from an inadequate overall response. Three separate levels of coordination are addressed in the mitigation and preparedness phase of disaster management where environmental conditions are slowly changing: (1) communication and transportation infrastructure, (2)(More)
— Role allocation has emerged as one of the key issue in teamwork involving communication. While direct point-to-point communication is expensive and uncertain, access to neighbors is reliable and efficient in scale-free networks such as those found in open environments and social networks. This suggests decentralized approaches to role allocation based on(More)
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