Validated caloric expenditure estimation using a single body-worn sensor.
Proceedings of the UbiComp 2009: Ubiquitous Computing, 2009
Flowers or a robot army?: encouraging awareness & activity with personal, mobile displays.
Proceedings of the UbiComp 2008: Ubiquitous Computing, 10th International Conference, 2008
Activity sensing in the wild: a field trial of ubifit garden.
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Proceedings of the 2008 Conference on Human Factors in Computing Systems, 2008