Browsing by Author "Perin, Charles"

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    Exploration Strategies for Discovery of Interactivity in Visualizations
    (IEEE Transactions on Visualization and Computer Graphics, 2018-02-05) Blascheck, Tanja; MacDonald Vermeulen, Lindsay; Vermeulen, Jo; Perin, Charles; Willett, Wesley; Ertl, Thomas; Carpendale, Sheelagh
    We investigate how people discover the functionality of an interactive visualization that was designed for the general public. While interactive visualizations are increasingly available for public use, we still know little about how the general public discovers what they can do with these visualizations and what interactions are available. Developing a better understanding of this discovery process can help inform the design of visualizations for the general public, which in turn can help make data more accessible. To unpack this problem, we conducted a lab study in which participants were free to use their own methods to discover the functionality of a connected set of interactive visualizations of public energy data. We collected eye movement data and interaction logs as well as video and audio recordings. By analyzing this combined data, we extract exploration strategies that the participants employed to discover the functionality in these interactive visualizations. These exploration strategies illuminate possible design directions for improving the discoverability of a visualization’s functionality.
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    Exploring the Design of Visualizations to Facilitate Patient-Provider Communication
    (2018-12-04) Rajabiyazdi, Fatemeh; Carpendale, Sheelagh; Oehlberg, Lora A.; Gromala, Diane; Perin, Charles
    Establishing strong patient-provider communication during clinical visits can have positive impacts on patient health outcomes. On the other hand, miscommunication between patients and healthcare providers can cause harm or in extreme cases cause death to patients. Factors such as healthcare providers' limited time, inefficient clinical environments, and patients' difficulties in communicating their concerns can be the causes of this miscommunication. In this thesis, I explore the design of visualizations to facilitate communication between healthcare providers and patients during clinical visits. In the first part (i) of this thesis, I present the results of a literature review I have conducted to expand our understanding of patients' and providers' communication challenges during in-clinic visits. In the second phase (ii) I discuss the results of interviews with healthcare providers and I contrast and compare patients' and providers' perspectives in the context of each other to unveil the roots of their communication challenges. Among the communication challenges we identified, I focus on exploring the challenges and the realities patients and healthcare providers face tracking and sharing patient-generated health data. In the third part of this dissertation (iii), I discuss the results of a series of interviews and focus groups with patients and healthcare providers I have conducted to gain a better understanding of patient-generated data communication challenges. I leverage this understanding to propose potential visualization designs representing patient-generated data collections to improve the process of reviewing and communicating these data between patients and healthcare providers. In the fourth part of this dissertation (iv), I discuss the results of the interviews with healthcare providers seeking their reflection on the proposed visualization designs. Finally, in collaboration with our healthcare provider team in Alberta Healthcare Services, I implement the prototypes of a number of carefully selected visualization designs. In the last part of this dissertation (v), I outline insights, lessons learned, and future research directions that arise from these studies and the design process. I hope this research provides more support for considering patients' and healthcare providers' individualities when designing technologies and visualizations in healthcare settings.