Blind and visually impaired (BVI) people primarily rely on non-visual senses to interact with a physical environment. Doing so requires a high cognitive load to perceive and memorize the presence of a large set of objects, such as at home or in a learning setting. In this work, we explored opportunities to enable object-centric note-taking by using a 3D printing pen for interactive, personalized tactile annotations. We first identified the benefits and challenges of self-created tactile graphics in a formative diary study. Then, we developed TacNote, a system that enables BVI users to annotate, explore, and memorize critical information associated with everyday objects. Using TacNote, the users create tactile graphics with a 3D printing pen and attach them to the target objects. They capture and organize the physical labels by using TacNote’s camera-based mobile app. In addition, they can specify locations, ordering, and hierarchy via finger-pointing interaction and receive audio feedback. Our user study with ten BVI participants showed that TacNote effectively alleviated the memory burden, offering a promising solution for enhancing users’ access to information.

Smartphone addiction refers to the problematic use of smartphones, which can negatively impact one’s quality of life and even health. We conducted a two-week technology probe study to explore the use of technologies aimed at improving smartphone addiction among seven dyads of adolescents and their parents. Interviews conducted during and after the probe study revealed that manually reporting lifestyle and well-being data could provide motivation to improve one’s lifestyle and well-being by moderating phone use. Sharing smartphone use data with parents was also shown to head off negative communication loops and foster opportunities to overcome the smartphone addiction.

Blind people typically access videos via audio descriptions (AD) crafted by sighted describers who comprehend, select, and describe crucial visual content in the videos. 360° video is an emerging storytelling medium that enables immersive experiences that people may not possibly reach in everyday life. However, the omnidirectional nature of 360° videos makes it challenging for describers to perceive the holistic visual content and interpret spatial information that is essential to create immersive ADs for blind people. Through a formative study with a professional describer, we identified key challenges in describing 360° videos and iteratively designed OmniScribe, a system that supports the authoring of immersive ADs for 360° videos. OmniScribe uses AI-generated content-awareness overlays for describers to better grasp 360° video content. Furthermore, OmniScribe enables describers to author spatial AD and immersive labels for blind users to consume the videos immersively with our mobile prototype. In a study with 11 professional and novice describers, we demonstrated the value of OmniScribe in the authoring workflow; and a study with 8 blind participants revealed the promise of immersive AD over standard AD for 360° videos. Finally, we discuss the implications of promoting 360° video accessibility.

Technology abuse among adolescents refers to the problematic use of technology devices, and the negative impact it can have on lifestyle and one's physical and mental health. This paper reports on in-depth interviews with 15 dyads of adolescent patients, their parents, and four experts with the objective of unraveling the issue of technology abuse. We conducted qualitative analysis aimed at unpacking the contextual factors affecting technology abuse, and differences between adolescents and their parents pertaining to this issue. Our discussions led us to formulate solutions to technology abuse: (1) motivating adolescents by sending timely reminders and providing interactive micro-incentives; (2) promoting communication between adolescents and their parents by sharing usage data related to device usage; and (3) incorporating social supports to complement parental support, while fulfilling the adolescent's social needs. This paper provides valuable insights into the design of technological solutions aimed at mediating technology abuse.

Thing-centered design has suggested analyzing our product-scape through the metaphor of agency. However, interaction design with plant-related agency usually animates plants to simulate human behavior. We intend to make interactive things with the ontological nature of plants. Through workshops including guided annotation of six artifacts and situated probes, the senses of the "plantness" of an artifact emerge. Drawing on these understandings, we built and deployed Botanical Printer, which lives with us slowly responding to natural and electronic climates. We present rich results including conceptual, situated, and interactive plantness. Empirical data allow us to explore the future of object-oriented speculation in greater depth.

Statistical decision rules have been used successfully in various engineering fields for many years: system reliability, quality control, start-up tests, and switching rules. Many of these decision rules are made of multiple-run-rules with their statistical distributions and characteristics that remain largely unknown. This paper shows that, given multiple-run-rules, there exists a single run-rule defined by a compound pattern which is equivalent to the multiple-run-rules and its waiting time is finite Markov chain imbeddable. Their distributions and causation probabilities can be obtained through the finite Markov chain imbedding (FMCI) technique which provides ways to obtain theoretical and numerical results for many probabilistic engineering systems problems. Two examples of multiple-run-rules, one in system reliability and the other in quality control, are provided to demonstrate the imbedding method and theoretical results.