People who believe in the Enhanced Church-Turing Thesis assume that the origin of every formalism for computable functions must be some sort of informal notions. Since all formalisms we ever have turn out to be equivalent, it must be the case that their origins are also equivalent. I hardly find myself at a position to believe in this, since I do not see sufficient reasons to further believe th...

FoxP3(+) regulatory T (Treg) cells accumulate in the central nervous system (CNS) during experimental autoimmune encephalomyelitis and have been shown to limit the extent of neuroinflammation and to facilitate clinical recovery. The recent demonstration that Treg cells lose FoxP3 expression and assume effector cell characteristics upon stimulation with proinflammatory cytokines has raised ques...

The general problem we address is large-scale content sharing for on-line communities. Consider, for instance, a scientific community (e.g., in bio-informatics, physics or environmental science) where community members are willing to share large amounts of documents (including images, experimental data, etc) stored in their local servers. Assume also that they don’t want to lose control over th...