What About Bob?

What about Bob? The Inadequacy of CPA Security for Proxy Reencryption

Consider three parties: Alice, Bob, and Polly. Alice keeps some encrypted data that she can decrypt with a secret key known to her. She wants to communicate the data to Bob, but not to Polly (nor anybody else). Assuming Alice knows Bob’s public key, how can she communicate the data to him? Proxy reencryption provides an elegant answer: Alice creates a reencryption key that will enable Polly (th...

What Happened to Bob? Semantic Data Mining of Context Histories

We report on event recognition within the life logging application IYOUIT for the automatic creation of static diary-like Blogs. Based on the qualitative context histories produced by IYOUIT, we developed pragmatic event modeling and recognition techniques using technology available today. Our approach combines Description Logics with queries and rules to model event recognizers in terms of con...

Bob Steneck

Bob Steneck is professor of marine biology, oceanography and marine policy in University of Maine’s School of Marine Sciences. He is a marine ecologist whose ‘laboratories’ include coral reefs in the Caribbean and Indopacific oceans and kelp forests of the North Atlantic and North Pacific Oceans. He has published over 150 scientific papers on topics including lobsters, sea urchins, fish, corals...

What about Memory, Consciousness, Recall, and Awareness in Anesthesia?

Bob Carlyon

r wine was imported to the port of Lattara in southern France as early as 400 BC (Proc. Natl. Acad. Sci USA (2013) 110, 10147–10152). The discovery of a wine press at the same site shows that the resident Celts moved on swiftly from importing Etruscan wine to importing the technology and making their own. More recent instances of agriculture shaping society include slavery in the Americas, wher...