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netflix prize winners - 0 views

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    apologies if this has been posted before. they announced the winners in september. links to the papers of the top 3 teams
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DARPA Looking for Partner On Wireless Spacecraft Demo | SpaceNews.com - 1 views

  • DARPA for several years has been working on a program dubbed System F6 that seeks to prove that a cluster of small spacecraft can perform the mission of a large spacecraft by communicating wirelessly with one another in space
  • DARPA plans to launch three dedicated System F6 spacecraft either to low Earth orbit or geostationary orbit in mid-2013 to 2014
  • semi-autonomous cluster reconfiguration
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ESA's Flickr Photostream - 0 views

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    Did you know it exists? You can also check http://flickriver.com/photos/europeanspaceagency/popular-interesting/ for their shots sorted by popularity. Is ESA already on Facebook too? ;-)
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Global Warning - a project of the National Security Journalism Initiative - 0 views

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    "WASHINGTON, D.C. - In a three-month investigation, a team of Northwestern University student reporters has found that the US nation's security establishment is not adequately prepared for many of the environmental changes that are coming faster than predicted and that threaten to reshape demands made on the military and intelligence community. This is despite the fact that the Defense Department has called climate change a potential "accelerant of instability." The Medill School of Journalism graduate student team began publication on January 10 of its findings on the national security implications of climate change with a series of print, video and interactive stories."
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Macroscopic invisibility cloaking of visible light : Nature Communications : Nature Pub... - 3 views

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    and all this without magic metamaterials ...
  • ...1 more comment...
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    Wellwellwell! I don't know how I have to complain, since I could not yet read the full article, but I'm sure I will :-).
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    It's funny to see how people get more and more humble in the desperate attempt to save their stupid ideas... At the beginning was the brave and bold aim to cloak something in free space (in a sphere or a cylinder). This requires inhomogeneous, anisotropic, magnetic materials; hopeless!! So one reduces to one polarization, now we have inhomogenous, anisotropic materials; still hopeless! At this point one downgraded the pretension: instead of cloaking in free space, we make a "carpet cloak" and hide an object behind an invisible dent in a mirror. But if that shall be continuous, we still need inhomogeneity and this is very hard. So now instead of a dent we take a cone and then it is claimed to work ... for ONE polarization. But of course the cloak can't work at all incident angles... irony of fate: everything is now made from birefringent media, the antithesis of what the metamaterials dogma was at the beginning!
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    Hi Luzi, can you please send me the paper. We are writing a project based on sulfates and carbonates, and all this BS sounds great for the introduction (The authors used Calcite as birefringent material)
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SETI, Citrus Division - 1 views

  • A nice contrast to these high-tech installations, Adrian Lee's Search for Extra-Terrestrial Intelligence (SETI) Citrus Division (below), sees 65 lemons trying to communicate with aliens. Using their own juices, these lemon batteries power a small motor - which turns a disc into which is punched the Morse code for "We are here". As the disc rotates, a class 2 laser - also powered by the lemons - shines through the holes and the encoded message is then directed by a small mirror up into space...or in this case, onto the ceiling of the Ambica P3 venue. Amusing, simple and sophisticated all at once, the Citrus Division mixes old and new science and technology in just the right measure.
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ScienceDirect - Optics Communications : Replication of homologous optical and hydrophob... - 2 views

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    remember by comment on the butterfly wings during the brainstrormgame ?
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Russian cargo rocket crashes - 1 views

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    So... basically they are the only guys who now do human spaceflight?
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    and 2nd failed launch for Russian in 10 days. http://www.nasaspaceflight.com/2011/08/proton-m-launches-russias-ekspress-am4-communications-satellite/ although this one is a giant space debris stuck on the GTO.
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    ESA's article on the consequences for ISS: http://www.esa.int/esaCP/SEM6GJUTTRG_index_0.html What is not clear is if the rocket that failed is the same variant as used in manned missions. [Edit] According to this article: http://www.interfax.com/newsinf.asp?pg=3&id=268437 "The first and second stages of the Soyuz-FG space rocket used for manned launches differ from those of the Soyuz-U, but the third stage [the one that failed - MR] is identical in both rockets". Thus the stay of astronauts currently at ISS may prolong a little bit.
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Strong plasmonic enhancement of photovoltage in graphene : Nature Communications : Natu... - 0 views

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    graphene for solar cells ... who wants to have a closer look at it?
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    Why not but I'm not sure I have the competences/background to do much...
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Google Wave Preview - 2 views

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    Looks really cool! And it's open source :)
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    Don't know if you've noticed, but the current version is becoming more and more usable... did you try it already in your collaborative work?
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    We've used it a bit with Juxi and Leopold for the work on the new issue of acta futura, and I think it is quite nice. The problem right now is that only a few people in the team have an account (and I have exhausted my invitations). Maybe you have one or two you are willing to share? :)
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Innovative space based antenna technology - 0 views

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    Intelligent Material Systems and Structures (Virginia)
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CubeSat Community Website - SSETI Express 2005 - 0 views

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    Cubesat Portal
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Wild ideas to combat global warming being seriously entertained | Seattle Times Newspaper - 0 views

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    Any better ideas...?
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wePapers - Creating the world's biggest study group - 0 views

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    seems to be a big resource for learning documents
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Researchers mash Google Earth with electrical data to predict national grid problems - 0 views

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    Related with Daniela and Franco project on the power grid.
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