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We designed an information integration system, iPCA, which combined wireless sensor networks with a data mining system, to help anesthesiologists provide better post-operative pain control. To reduce labor work and to collect analgesic usage information and physiological data efficiently, we connected three kinds of medical instruments with Zigbee nodes through IEEE 802.11 and Zigbee networks. We...
User studies usually involve much organization and manual labor. Even when performed correctly, a common problem of the studies is user bias. This occurs when participating users' knowledge of the study influences their actions. Another problem is the willingness of the users to participate at all. Finally, participants will always have privacy concerns. We have developed a framework to help with...
Environment monitoring in urban areas is becoming important to provide information for safety and relief for daily lives. Wireless sensor devices are regarded as means of such monitoring. However, it is not efficient to deploy the sensors more than the necessity in the city. It is efficient to deploy the sensors on the place where many people move around. Therefore, we install sensors to walking people...
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