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Saturday, January 31, 2015

ScienceDaily: Computers and Internet News

ScienceDaily: Computers and Internet News

Evidence mounts for quantum criticality theory

Posted: 30 Jan 2015 06:14 PM PST

A new study adds to the growing evidence supporting a theory that strange electronic behaviors -- including high-temperature superconductivity and heavy fermion physics -- arise from quantum fluctuations of strongly correlated electrons.

Computing: Common 'data structure' revamped to work with multicore chips

Posted: 30 Jan 2015 09:18 AM PST

Every undergraduate computer-science major takes a course on data structures, which describes different ways of organizing data in a computer's memory. Every data structure has its own advantages: Some are good for fast retrieval, some for efficient search, some for quick insertions and deletions, and so on. Scientists have now developed a new way of implementing priority queues that lets them keep pace with the addition of new cores. In simulations, algorithms using their data structure continued to demonstrate performance improvement with the addition of new cores, up to a total of 80 cores.

Supercomputing the evolution of a model flower

Posted: 27 Jan 2015 01:50 PM PST

Cold and drought sensitive genes in Arabidopsis thaliana flowering plant found to evolve differential expression responses. Findings increase basic understanding of plant adaptation and can be applied to improve crops. Scientists combined lab data from grown plants with genomic analysis through the Stampede and Lonestar supercomputers of the Texas Advanced Computing Center and the iPlant Collaborative.

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