Articles written by Karyn Hede

About the Author

Karyn Hede is news editor of the Nature Publishing Group journal Genetics in Medicine and a correspondent for the Journal of the National Cancer Institute. Her freelance writing has appeared in Science, New Scientist, Technology Review and elsewhere. She teaches scientific writing at the University of North Carolina, Chapel Hill, where she earned advanced degrees in journalism and biology.

October 2013

Scalability (red line) of the triples part of the re-normalized EOMCCSD(T) approach in excited-state calculations for porphyrin-coronene complex. Timings were determined from calculations on the Jaguar Cray XT5 computer system.

Balancing act

October 31st, 2013 Updated: October 31st, 2013

A Pacific Northwest National Laboratory researcher is developing approaches to spread the work evenly over scads of processors in a high-performance computer and to keep calculations clicking even as part of the machine has a hiccup.

More...

November 2012

visit0000

Filling in the blanks

November 27th, 2012 Updated: November 27th, 2012

To prevent important information from being missed, a Berkeley Lab team is improving how supercomputers divvy up the ponderous tasks surrounding large simulations’ analytics and visualization.

More...

Going deep

November 27th, 2012 Updated: November 27th, 2012

The discovery of that our universe is expanding at an accelerating rate garnered a 2011 Nobel Prize for Saul Perlmutter of the Supernova Cosmology Project at Lawrence Berkeley National Laboratory, but the finding also opened up a plethora of new questions about what is happening in the far reaches of deep space. There, researchers glimpse […]

More...

January 2012

(a) Traditional approaches to address volume-change in battery materials use acetylene black as the conductive additive and PVDF polymer as the mechanical binder. (b) Conductive polymer with dual functionality, as a conductor and binder, could keep both the electric and mechanical integrity of the electrode during the battery cycles. (c) PF-type conductive polymers' molecular structure, with two key function groups in PFFOMB (carbonyl and methylbenzoic ester) tailor the conduction band and improve the mechanical binding force. (Click to enlarge schematic, courtesy of Lin-Wang Wang, Lawrence Berkeley National Laboratory.)

Power boost

January 19th, 2012 Updated: January 19th, 2012

Berkeley scientists have combined computational modeling and advanced materials synthesis to devise a low-cost anode that bolsters the feasibility of long-life lithium-ion batteries.

More...

September 2011

The tiny white yeast colonies in the right panel interspersed with larger normal colonies are cells that have had a synthetic chromosome inserted and their DNA shuffled by the lab-induced SCRaMbLE system, which introduces changes that slow cell growth. By comparison, all colonies on the left are grown from the standard lab yeast strain and appear uniform. (Click on image to enlarge.)

Designer yeast

September 14th, 2011 Updated: July 25th, 2014

A Johns Hopkins University team has built a yeast chromosome from scratch, they report today in the journal Nature. Sarah Richardson used what she learned as a Computational Science Graduate Fellow to help design and monitor the chromosome’s construction.

More...

March 2010

A well-placed plug for the humble algorithm

March 16th, 2010 Updated: March 16th, 2011

The ceremony in the East Room of the White House, where President Obama bestowed the National Medal of Science on Berni Alder last October, represented the public side of the honor. But for Alder the real action occurred after the ceremony, at a White House meeting for invited guests, politicians, family and other Washington dignitaries. […]

More...

The master of Monte Carlo

March 16th, 2010 Updated: November 30th, 2011

Berni Alder’s Monte Carlo methods have solved problems across the scientific spectrum. Yet the Livermore-based National Medal of Science-recipient still has questions.

More...

December 2009

Nanostructural problem-solvers

December 1st, 2009 Updated: March 16th, 2011

Computation ferrets out emergent behaviors of novel materials built from tiny blocks.

More...