Human Cooperation (1+1=2.7): Superlinear Group Production in Open-Source Source Software Collaborations and Evolutionary Feedback Selection
Didier Sornette of the Department of Management, Technology and Economics (D-MTEC), ETH Zurich will present a talk at 12:15 p.m., Thursday July 5 in the Noyce Conference Room at the Santa Fe Institute.
Sornette’s talk is entitled, “Human Cooperation (1+1=2.7): Superlinear Group Production in Open-Source Source Software Collaborations and Evolutionary Feedback Selection.”
Abstract: In the first part of the seminar, we present a new analysis of a representative sample 254 open source software (OSS) projects that show how development activity of successful Read More
U.S. Releases Updated Plutonium Inventory Report
NNSA News:
Plutonium pellet. Courtesy photo
WASHINGTON, D.C. – The National Nuclear Security Administration (NNSA) announced Friday the public release of a report that details the current plutonium inventory of the U.S.
Titled The United States Plutonium Balance, 1944-2009, the document serves as an update to Plutonium: the First 50 Years, which was first released by the Department of Energy (DOE) in 1996.
The report provides the U.S. inventory of plutonium owned by DOE and includes material in the possession of the Department of Defense (DoD).
It can be found online at https:////nnsa.energy.gov/plutoniuminventory. Read More
LANL Honors its Employee and Retiree Volunteers
Virginia Stovall, volunteer with the Los Alamos Retired and Senior Organization, listens to Los Alamos National Laboratory Deputy Director Beth Sellers deliver the keynote speech at the annual LANL Volunteer Recognition Awards ceremony Thursday morning at Fuller Lodge. Photo by Salvador Zapien/ladailypost.com
LANL Deputy Director Beth Sellers commends the many Laboratory employees who perform community volunteer service. Photo by Salvador Zapien/ladailypost.com
More than 120 people attended the LANL Volunteer Recognition Awards ceremony held Thursday on the lawn at Fuller Read More
Los Alamos Site Office Takes Fire Prevention Measures
NNSA News:
As a result of the region’s high fire potential, the National Nuclear Security Administration’s Los Alamos Site Office (LASO) has imposed fire prevention restrictions on the government-leased Sportsmen’s Club property in Los Alamos to match those for the Forest Service, Park Service, and the Los Alamos National Laboratory property.
“We are very concerned about the severe drought and weather conditions that are affecting the southwest,” LASO Manager Kevin Smith said. “We just can’t afford to take a chance right now on causing a fire that could rapidly spread to other areas.”
In Read More
Officials Break Ground on Interagency Fire Center at Los Alamos National Laboratory’s TA-49
Dignitaries broke ground Tuesday morning on an Interagency Fire Center at Los Alamos National Laboratory’s Technical Area-49. The 6,400 square foot facility will serve as a joint coordination and response center for fire events around the area. From left, Ray Todd, associate regional director for Facilities and Lands for National Park Service Intermountain Region; Rebecca Montoya, field representative for Sen. Jeff Bingaman; Kevin Smith, manager of the National Nuclear Security Administration’s Los Alamos Site Office; Sharon Stover, chair of the Los Alamos County Council; Read More
Celebration Marks 1,000th TRU Waste Shipment
Employees of the Transuranic (TRU) Waste processing facility are joined by local and state officials to celebrate the 1,000th (1,014th) shipment of TRU waste to WIPP. Photo by Greg Kendall/ladailypost.com
By Greg Kendall
New Mexico’s governor and other dignitaries gathered at Los Alamos National Laboratory Tuesday for a special event marking the 1,000th shipment of nuclear waste to a permanent repository at the Waste Isolation Pilot Plant (WIPP) near Carlsbad.
“I am pleased we continue to make progress on our environmental cleanup commitment to protect this beautiful place where Read More
Drumheads Tuned to Make Quantum Dots
NIST researchers showed that straining graphene membrane creates pseudomagnetic fields that confines the graphene’s electrons and creates quantized quantum dot-like energy levels. The background is a false color image of the graphene drumheads made from a single layer of graphene over 1 micron-sized pits etched in a silicon dioxide substrate.Credit: N. Klimov and T. Li, NIST/UMD
NIST News:
Tightening or relaxing the tension on a drumhead will change the way the drum sounds.
The same goes for drumheads made from graphene, only instead of changing the sound, stretching graphene Read More
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