5 th International Workshop on Middleware for Pervasive and Ad-Hoc Computing Newport Beach , Orange County , California , USA November 26 th - 30 th , 2007 A Workshop of Middleware 2007 This workshop is premised on our belief that underpinning middleware mechanisms are central in weaving together the multitude of sensing, computing, communication and information technologies. In this respect, middleware for pervasive computing and ad-hoc networking provides two core research areas. Building on the success of the 2003 , 2004 , 2005 and 2006 workshops, this workshop seeks to develop a roadmap for research on essential middleware abstractions and infrastructures for ad-hoc and pervasive computing in general, and sensor-based services in particular. For more details, please visit our official website .