One of challenges the Monte Carlo full core simulations is to obtain acceptable statistical variance local parameters throughout whole reactor at a reasonable computation cost. The tends be larger in low-power regions. To tackle this problem, Uniform-Fission-Site method was implemented code MC21 and its effectiveness demonstrated on NEA performance benchmark. very similar also Serpent under nam...

We extend the neutral theory of macroecology by deriving biodiversity models (relative species abundance and species-area relationships) in a local community-metacommunity system in which the local community is embedded within the metacommunity. We first demonstrate that the local species diversity patterns converge to that of the metacommunity as the size (scale) of the embedded local communit...

One of the leading theories for the evolutionary stability of sex in eukaryotes relies on parasite-mediated selection against locally common host genotypes (the Red Queen hypothesis). As such, parasites would be expected to be better at infecting sympatric host populations than allopatric host populations. Here we examined all published and unpublished infection experiments on a snail-trematode...