Rapidly changing environments such as robots, sensor networks, or medical services are emerging. To deal with them, DBMS should persist sensor data streams instantaneously. To achi...
Human interaction proofs (HIPs) have become commonplace on the internet for protecting free online services from abuse by automated scripts/bots. They are challenges designed to b...
Kumar Chellapilla, Kevin Larson, Patrice Y. Simard...
Null data frames are a special but important type of frames in IEEE 802.11 WLANs. They are widely used in 802.11 WLANs for control purposes such as power management, channel scanni...
This paper describes SHAD, a novel architecture for security in pervasive computing environments, and a prototype implementation. SHAD is a Peer-to-Peer and humancentered security...
Enrique Soriano, Francisco J. Ballesteros, Gorka G...
It is expected that more and more people will search the web when they are on the move. Though conventional search engines can be directly visited from mobile devices with web bro...