I am joining the Technical Program Committee of the 2013 ACM International Conference on Pervasive and Ubiquitous Computing (UbiComp 2013).

The UbiComp 2013
Program Chairs are Marc Langheinrich, John Canny, and Jun Rekimoto and
they said of UbiComp 2013.

That it is the first merged edition of the
two most renowned conferences in the field: Pervasive and UbiComp. While
it retains the “UbiComp” short-name in recognition of the visionary
work of Mark Weiser, its long name (and focus) reflects the dual history
of the new event, i.e., it seeks to publish any work that one would
previously expect to find at either UbiComp or Pervasive. The conference
will take place from September 8-12 in Zurich, Switzerland. Aaron has
previously served on a number of Pervasive and UbiComp Technical program
committees and looks forward to serving on this first joint conference
UbiComp TPC which is now the premier forum for Ubiquitous and Pervasive
Computing research.
http://www.ubicomp.org/