This paper presents a world model for location-aware and user-aware services in ubiquitous computing environments. It can be dynamically organized like a tree based on geographica...
—Context-awareness is a critical aspect of safe navigation, especially for the blind and visually-impaired in unfamiliar environments. Existing mobile devices for contextaware na...
Mobility and the New Global Economy are accompanied by requirements for dynamism and flexibility, with respect to e-commerce, inter-organizational activity, and security. The clas...
Energy is the critical limiting resource to mobile computing devices. Correspondingly, an operating system must track, provision, and ration how applications consume energy. The e...
Stephen M. Rumble, Ryan Stutsman, Philip Levis, Da...
We consider a mobile ad hoc network setting where Bluetooth enabled mobile devices communicate directly with other devices as they meet opportunistically. We design and implement ...