The United Kingdom's ‘enhanced concurrency regime’

Measuring genome conservation across taxa: divided strains and united kingdoms

Species evolutionary relationships have traditionally been defined by sequence similarities of phylogenetic marker molecules, recently followed by whole-genome phylogenies based on gene order, average ortholog similarity or gene content. Here, we introduce genome conservation--a novel metric of evolutionary distances between species that simultaneously takes into account, both gene content and ...

Enhanced Concurrency Control with Transactional NACKs

Transactional memory (TM) is a promising technique that simplifies parallel programming by supporting atomic and isolated execution of code sections. To provide robust performance and fairness guarantees, however, TM must dynamically adjust the degree of concurrency among transactions. To design an efficient concurrency controller for TM, critical system information, such as dependencies among ...

The real ‘kingdoms’ of eukaryotes

The diversity of life has generally been divided into a few — four to six — fundamental ‘kingdoms’. The most influential system, the ‘Whittaker’ five kingdom structure, recognises Monera (prokaryotes) and four eukaryotic kingdoms: Animalia (Metazoa), Plantae, Fungi and Protista. Whittaker’s system, somewhat modified, was presented as more realistic than the traditional division of life into ani...

“Three Kingdoms” to Romance

Enhanced laser-driven ion acceleration in the relativistic transparency regime.

We report on the acceleration of ion beams from ultrathin diamondlike carbon foils of thickness 50, 30, and 10 nm irradiated by ultrahigh contrast laser pulses at intensities of approximately 7 x 10;{19} W/cm;{2}. An unprecedented maximum energy of 185 MeV (15 MeV/u) for fully ionized carbon atoms is observed at the optimum thickness of 30 nm. The enhanced acceleration is attributed to self-ind...