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For textbooks on technical topics, the typical amount of text used is more than what many college students will read. Some teachers observe, and students report, that students commonly skim such text. As such, a writing style that aggressively minimizes text while still teaching the core technical topic may improve student learning; if text is short enough, students may then read and study the text...
New college engineering textbooks and other online learning materials use activities like interactive questions to engage students and improve learning. Some such materials use a "safe" learning approach where activity solutions are readily available to students, as opposed to being graded like a homework assignment. Instructors have inquired how few course points are sufficient to ensure...
A privacy-enhanced video obscures the appearance of a person in the video. We consider four privacy enhancements: person blurred, person silhouetted, person covered with a bounding-oval, and person covered by a bounding-box. We demonstrate that privacy-enhanced video can be as accurate as raw video for eight in-home assistive monitoring goals: energy expenditure estimation, in room too long, leave...
Automatically estimating a person's energy expenditure has numerous uses, including ensuring sufficient daily activity by an elderly live-alone person, such activity shown to have numerous benefits. Most previous work requires a person to wear a sensor device. We introduce a video-based activity level estimation technique to take advantage of increasingly-common in-home camera systems. We consider...
A privacy-enhanced video obscures the appearance of a person in the video. We consider four privacy enhancements: blurring of the person, silhouetting of the person, covering the person with a graphical box, and covering the person with a graphical oval. We demonstrate that an automated video-based fall detection algorithm can be as accurate on privacy-enhanced video as on raw video. The algorithm...
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