Hsin-yi Liu

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Previous studies found that select titanium ultralight rigid wheelchairs (TURWs) had fewer equivalent cycles and less value than select aluminum ultralight folding wheelchairs (AUFWs). The causes of premature failure of TURWs were not clear because the TURWs had different frame material and design than the AUFWs. We tested 12 aluminum ultralight rigid(More)
Comfortable propulsion and support, light weight, and small dimensions are important features that help preserve upper-limb integrity of manual wheelchair users and improve accessibility. The titanium wheelchair is a product developed in response to these goals, but none of the test results of titanium wheelchairs had been disclosed before this study was(More)
Pressure ulcers are a common and devastating condition faced by users of power wheelchairs. However, proper use of power wheelchair tilt and recline functions can alleviate pressure and reduce the risk of ulcer occurrence. In this work, we show that when using data from a sensor instrumented power wheelchair, we are able to predict with an average accuracy(More)
Power seat functions (PSFs) allow power wheelchair users to adjust their posture independently for preventing pressure ulcers, ameliorating other medical conditions, and to assist with daily activities. Use of PSFs requires analysis of current environment, body position, and clinical recommendations, but these can be complex tasks for some users. We are(More)
Power seat functions (PSFs) let power wheelchair users adjust their posture independently. The Virtual Seating Coach aims to prompt users to use PSFs appropriately and warn against improper use. The authors surveyed users about their preferences for PSF feedback modalities.
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