James F. Knight Huw W. Bristow Stamatina Anastopoulou Chris Baber Anthony Schwirtz Theodoros N. Arvanitis Uses of accelerometer data collected from a wearable system. 117-132 2007 11 Personal and Ubiquitous Computing 2 http://dx.doi.org/10.1007/s00779-006-0070-y db/journals/puc/puc11.html#KnightBABSA07