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oAnth's day by day interests - via its scoop.it contacts
An aggregator for (oAnth's) daily interests in humanities, arts, science, geography, economics, politics - academia, education - activism, advocacy - itec, free software, open source, open access, open knowledge - languages in use: mostly EN, FR, DE
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Rescooped by oAnth - "offene Ablage: nothing to hide" from Astronomy physics and quantum physics
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Voyager 1 has entered a new region of space, sudden changes in cosmic rays indicate

Voyager 1 has entered a new region of space, sudden changes in cosmic rays indicate | oAnth's day by day interests - via its scoop.it contacts | Scoop.it
Thirty-five years after its launch, Voyager 1 appears to have travelled beyond the influence of the Sun and exited the heliosphere, according to a new study.

Via Ioannis
oAnth - "offene Ablage: nothing to hide"'s insight:

- more detailed with graphics and data; article from 2012-12-03:

http://www.jpl.nasa.gov/news/news.php?release=2012-381#7

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Rescooped by oAnth - "offene Ablage: nothing to hide" from Public Datasets - Open Data -
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Error and attack tolerance of complex networks : Article : Nature

Error and attack tolerance of complex networks : Article : Nature | oAnth's day by day interests - via its scoop.it contacts | Scoop.it
Nature is the international weekly journal of science: a magazine style journal that publishes full-length research papers in all disciplines of science, as well as News and Views, reviews, news, features, commentaries, web focuses and more,...

Via luiy
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luiy's curator insight, March 4, 2013 7:07 AM

Many complex systems display a surprising degree of tolerance against errors. For example, relatively simple organisms grow, persist and reproduce despite drastic pharmaceutical or environmental interventions, an error tolerance attributed to the robustness of the underlying metabolic network1. Complex communication networks2display a surprising degree of robustness: although key components regularly malfunction, local failures rarely lead to the loss of the global information-carrying ability of the network. The stability of these and other complex systems is often attributed to the redundant wiring of the functional web defined by the systems' components. Here we demonstrate that error tolerance is not shared by all redundant systems: it is displayed only by a class of inhomogeneously wired networks, called scale-free networks, which include the World-Wide Web3, 4, 5, the Internet6, social networks7 and cells8. We find that such networks display an unexpected degree of robustness, the ability of their nodes to communicate being unaffected even by unrealistically high failure rates. However, error tolerance comes at a high price in that these networks are extremely vulnerable to attacks (that is, to the selection and removal of a few nodes that play a vital role in maintaining the network's connectivity). Such error tolerance and attack vulnerability are generic properties of communication networks.