News tagged with network structure
Why Does Water Expand When it Cools? A New Explanation
Jul 17, 2009 |
4.2 / 5 (39) |
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(PhysOrg.com) -- Most of us, when we take our first science classes, learn that when things cool down, they shrink. (When they heat up, we learn, they usually expand.) However, water seems to be the exception ...
It's the network: Researchers examine behavior influenced by network structure
Technology / Computer Sciences
Jan 28, 2009 |
4.6 / 5 (5) |
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A team of computer scientists at the University of Pennsylvania investigating the political, social and economic struggle between individual self-interest and the need to build a consensus have learned that, depending only ...
New evidence on the robustness of metabolic networks
Biology /
Sep 04, 2008 |
4.8 / 5 (4) |
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Biological systems are constantly evolving in ways that increase their fitness for survival amidst environmental fluctuations and internal errors. Now, in a study of cell metabolism, a Northwestern University research team ...
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Energy-saving powder: Converting methane to methanol
3 hours ago |
4 / 5 (2) |
1
It is currently estimated that natural gas resources will be exhausted in 130 years; however, those reserves where extraction is cost-effective will only flow for another 60 years or so.
Studies show marine reserves can be an effective tool for managing fisheries
Nov 09, 2009 |
not rated yet |
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Studies conducted in California and elsewhere provide support for the use of marine reserves as a tool for managing fisheries and protecting marine habitats, according to biologists at the University of California, Santa ...
The Ring Nebula
Nov 02, 2009 |
4.3 / 5 (7) |
2
The diversity of colours, shapes, and sizes of planetary nebulae make them fascinating objects. In this photo release Calar Alto presents a rather unique view combining both optical and near-infrared data ...
New Celestial Map Gives Directions for GPS
Space & Earth / Space Exploration
Oct 29, 2009 |
4.5 / 5 (4) |
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(PhysOrg.com) -- Many of us have been rescued from unfamiliar territory by directions from a Global Positioning System (GPS) navigator. GPS satellites send signals to a receiver in your GPS navigator, which ...
Galileo's Jupiter Journey Began Two Decades Ago
Space & Earth / Space Exploration
Oct 19, 2009 |
4.8 / 5 (5) |
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(PhysOrg.com) -- NASA's Galileo spacecraft began what would become a 14-year odyssey of exploration 20 years ago this Sunday, Oct. 18. Galileo was humanity's first emissary to orbit a planet in the outer solar ...
Field experiment on a robust hierarchical metropolitan quantum cryptography network
Oct 16, 2009 |
5 / 5 (1) |
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Key Laboratory of Quantum Information (CAS), University of Science and Technology of China has recently demonstrated a metropolitan Quantum Cryptography Network (QCN) for Government Administration in Wuhu, China. The project ...
DOE to explore scientific cloud computing at Argonne, Lawrence Berkeley National Laboratories
Technology / Computer Sciences
Oct 14, 2009 |
not rated yet |
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Cloud computing is gaining traction in the commercial world, but can such an approach also meet the computing and data storage demands of the nation's scientific community? A new program funded by the American Recovery and ...
Tiny motes sniff out chemical, biological threats
Chemistry / Analytical Chemistry
Oct 12, 2009 |
not rated yet |
0
(PhysOrg.com) -- Research to develop a new method to detect biological and chemical threats may also lead to new approaches for removing pollutants from the environment.
Paleontologists discover a new Mesozoic mammal
Other Sciences / Archaeology & Fossils
Oct 08, 2009 |
4.2 / 5 (10) |
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Pittsburgh, Pennsylvania, USA…An international team of paleontologists has discovered a new species of mammal that lived 123 million years ago in what is now the Liaoning Province in northeastern China. The ...
Continuing racial differences in HIV prevalence in US
Medicine & Health / HIV & AIDS
Oct 06, 2009 |
3.5 / 5 (2) |
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HIV prevalence among African Americans is ten times greater than the prevalence among whites. This racial disparity in HIV prevalence has persisted in the face of both governmental and private actions, involving many billions ...
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