Jacob P. Somervell

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Addressing the need to tailor usability evaluation methods (UEMs) and promote effective reuse of HCI knowledge for computing activities undertaken in divided-attention situations, we present the foundations of a unifying model that can guide evaluation efforts for notification systems. Often implemented as ubiquitous systems or within a small portion of the(More)
Peripheral displays provide a means to present information to users in the periphery of the computer desktop. There are several forms of peripheral displays, some of the most widely recognized being stock tickers, email alert tools, and percent-done indicators. The use of such displays inevitably leads to the questions of how successful they are at(More)
Classroom BRIDGE supports activity awareness by facilitating planning and goal revision in collaborative, project-based middle school science. It integrates large-screen and desktop views of project times to support incidental creation of awareness information through routine document transactions, integrated presentation of awareness information as part of(More)
People often need to quickly access or maintain awareness of secondary information while busy with other primary tasks. Information visualizations provide rapid, effective access to information, but are generally designed to be examined by users as the primary focus of their attention. The goal of this research is to discover how to design information(More)
This paper reports on current development of usability heuristics for large screen information exhibits. By basing the creation of such heuristics on real systems, and identifying real problems with those systems, our set is grounded and tailored to the specific application class. This process was done through scenario based design techniques involving(More)
This paper describes a heuristic creation process based on the notion of critical parameters, and a comparison experiment that demonstrates the utility of heuristics created for a specific system class. We focus on two examples of using the newly created heuristics to illustrate the utility of the usability evaluation method, as well as to provide support(More)
Reacting to challenges that have been observed in human-computer interaction (HCI) education, as well as the multidisciplinary design, science, and engineering underpinnings, we investigate a pedagogical approach based on case methods. Our study of various case method techniques in an undergraduate HCI class provides insights into challenges that can be(More)
One of the challenges in building and evaluating ubiquitous computing systems emanates from the fact that they generally have been built to showcase technological innovation without considering how to foretell whether and how people will eventually accept them in their lives. In this study, participants are introduced to the notion of ubiquitous computing(More)
As we consider ubiquitous systems that display information on large screen interfaces, we must find reasonable methods for obtaining usability assessments. Standardized, generic methods provide appeal since they allow ready application, benchmarking, and comparison of results. However, critical usability concerns for these interfaces may demand more focused(More)
Heuristic evaluation method comparison is important for developing new heuristic sets, to ensure effectiveness and utility. However, comparing different sets of heuristics requires a common baseline upon which a comparison can be made, usually some set of usability problems from a particular interface. This is often accomplished by having evaluators perform(More)