The Persistence of Memory

The Persistence of Memory

The Persistence of Memory

Many sequences from number theory, such as the primes, are defined by recursive procedures, often leading to complex local behavior, but also to graphical similarity on different scales — a property that can be analyzed by fractal dimension. This paper computes sample fractal dimensions from the graphs of some number-theoretic functions. It argues for the usefulness of empirical fractal dimensi...

The persistence of memory.

of Amnesia,” writer Gore Vidal comments at one point in Why We Fight. This comment struck me more than anything else in the movie, especially considering numerous utter falsities stated by the Bush administration about which I had forgotten. “There is no doubt that Saddam Hussein now has weapons of mass destruction,” Dick Cheney said in 2002. Bush attempted to justify the war as a response to 9...

The Proteins behind the Persistence of Memory

At its most fundamental level, a memory is an increase in synaptic strength that persists over time. That persistence requires synthesis of a specific set of synaptic proteins, a process regulated by so-called Cytoplasmic Polyadenylation Element Binding (CPEB) proteins. The remarkable feature of these proteins is their prion-like nature. Their conversion from monomers to oligomers, via stacking...

The Persistence of Memory in Freenet

Most peer-to-peer systems are either unstructured file sharing networks that offer no data availability guarantees or tightly-structured file storage networks that do. The Freenet network occupies a middle ground in providing a looselystructured file storage service but not guaranteeing data persistence absolutely. We present simulation results showing that in practice not that many files ever ...