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The Network Behind the Cosmic Web - 1 views

shared by jaihobah on 18 Apr 16 - No Cached
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    "The concept of the cosmic web-viewing the universe as a set of discrete galaxies held together by gravity-is deeply ingrained in cosmology. Yet, little is known about architecture of this network or its characteristics. Our research used data from 24,000 galaxies to construct multiple models of the cosmic web, offering complex blueprints for how galaxies fit together. These three interactive visualizations help us imagine the cosmic web, show us differences between the models, and give us insight into the fundamental structure of the universe."
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Erdős-Bacon number - Wikipedia, the free encyclopedia - 2 views

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    ever heard of the Erdős-Bacon number? :-)
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    There is a tool (http://www.ams.org/mathscinet/collaborationDistance.html) which computes your Erdös number. But who cares about Kevin Bacon?
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    and actors probably ask who cares about Erdős :) The network of actors who co-star in movies is a famous one among networks people. Kevin Bacon became famous in that network because of fans of his who could from memory trace the paths of a large number of actors back to him :) see: http://en.wikipedia.org/wiki/Six_Degrees_of_Kevin_Bacon#History If you have you publications in http://academic.research.microsoft.com/, it gives you a nice tool to visualize your graph up to Erdős. Apparently I have a path of length 4, and several of length 5: http://academic.research.microsoft.com/VisualExplorer#36695545&1112639
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    and for the actors http://oracleofbacon.org/
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[1107.5728] The network of global corporate control - 1 views

  • Abstract: The structure of the control network of transnational corporations affects global market competition and financial stability. So far, only small national samples were studied and there was no appropriate methodology to assess control globally. We present the first investigation of the architecture of the international ownership network, along with the computation of the control held by each global player. We find that transnational corporations form a giant bow-tie structure and that a large portion of control flows to a small tightly-knit core of financial institutions. This core can be seen as an economic "super-entity" that raises new important issues both for researchers and policy makers.
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The Secret of Ant Transportation Networks - Technology Review - 2 views

  • Just how ants create the highly efficient network of trails around their nests has never been fully understood. Now researchers think they've cracked it
  • They say the structure of ant trails can be entirely explained if the ants's response to a pheromone droplet concentration is linear. "One ant will turn to the left in proportion to the difference between the pheromone it has on its left side and the pheromone on its right," say Perna and co. They also point out that this is exactly what Weber's law predicts.
  • Ref: arxiv.org/abs/1201.5827 :Individual Rules For Trail Pattern Formation In Argentine Ants (Linepithema Humile)
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    from the abstract: "Using a novel imaging and analysis technique on experimental data we estimated pheromone concentrations at all spatial positions in the experimental arena and at different times. Then we derived the response function of individual ants to pheromone concentrations by looking at correlations between concentrations and changes in speed or direction of the ants." [...] "agent based simulations based on the Weber's Law response function determined experimentally produced results compatible with those reported in the literature and reproduced the formation of trails."
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    Nice article!
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A measure of individual role in collective dynamics : Scientific Reports : Nature Publi... - 4 views

  • Centrality measures describe a node's importance by its position in a network. The key issue obviated is that the contribution of a node to the collective behavior is not uniquely determined by the structure of the system but it is a result of the interplay between dynamics and network structure.
  • Here, we show that dynamical influence is a centrality measure able to quantify how strongly a node's dynamical state affects the collective behavior of a system, taking explicitly into account the interplay between structure and dynamics in complex networks.
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Barabasi, A.-L. (2012). The network takeover. Nat Phys, 8(1), 14-16. - 1 views

  • Reductionism, as a paradigm, is expired, and complexity, as a field, is tired. Data-based mathematical models of complex systems are offering a fresh perspective, rapidly developing into a new discipline: network science.
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Thinking wind turbines - 0 views

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    Siemens is using neural networks to improve operation of wind turbines, reducing maintenaince needs and improving output by one precent. It seems even that Siemens has quite a large neural network study group, probably linked to german universities, with various examples in practice (see websie)
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Bitcoins in Space - 0 views

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    Jeff Garzik wants to make satellites part of the Bitcoin network to help secure the currency against attacks.
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    remember the discussion we had about space being used as a safe network for this type of stuff ....?
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InnovaHub - 0 views

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    not the most fancy social network - but one around an interesting topic for us ...
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Network traffic in US - 1 views

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    p2p is still massive and seems to be constant, but real-time entertainment is taking over. More details here: http://www.sandvine.com/downloads/documents/05-17-2011_phenomena/Sandvine%20Global%20Internet%20Phenomena%20Report.pdf
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    how reliable is this ... looks strange that e.g. secure tunneling and social networking are diminuing, isn't it?
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Networks, Crowds, and Markets: A Book by David Easley and Jon Kleinberg - 2 views

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    To be published in 2010 by Cambridge Press. Seems quite interesting (small words etc.), there's also a link to download the pre - publication version of 800 pages
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Cognitive fitness of cost-efficient brain functional networks - 0 views

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    The information processing performance of a network can be enhanced by a sparse or low-cost configuration with disproportionately high efficiency. --> any ideas?
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http://www.ai-junkie.com/ann/evolved/nnt2.html - 0 views

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    Explanation of artificial neural networks (explains very nicely the basics of the programming behind Christos' PhD thesis)
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On Orbit | Social Space News and Networking - 0 views

shared by ESA ACT on 24 Apr 09 - Cached
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    A new social space news and networking site.
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Power.com - All your friends in just one place. - 0 views

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    Centralise all your networks / messaging in one place. One of the best I've seen available. Havent tested yet... (KdG)
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Map: Welcome to the Blogosphere | Technology | DISCOVER Magazine - 0 views

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    Blogosphere as social network (check the image!)
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Bioadhesives - 1 views

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    Interesting European network on glues in nature
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Google neural network teaches itself to identify cats - 1 views

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    Its already "old" news but kinda nice...
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