Hitomi Murakami Hideyuki Nakashima Hideyuki Tokuda Michiaki Yasumura Ubiquitous Computing Systems, Second International Symposium, UCS 2004, Tokyo, Japan, November 8-9, 2004, Revised Selected Papers 3598 3-540-27893-1 2005 UCS Lecture Notes in Computer Science Springer db/conf/ucs/ucs2004.html