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Isabelle DB

Electric solar wind sail spacecraft propulsion - 6 views

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    Do you know this one ? (no time to go through the bookmarks...)
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    Not sure whether the group has seen this idea before, but it seems interesting. I like it
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    yes, we did have a look at it, I think back in 2007 but its maybe time to re-assess it ... will put it on the miscellaneous list for Dejan, the new propulsion and plasma RF to come in January ...
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    They just got 1.7 million euros from the EU "to build the laboratory prototypes of the key components of the electric sail": http://en.ilmatieteenlaitos.fi/press-release/121643
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    very interesting info indeed!!
LeopoldS

Yale Environment 360: The Greenhouse GasThat Nobody Knew - 2 views

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    interesting perspective ... hopefully included by now in the list but I did not check ....
LeopoldS

Comparison of Two GaN Transistor Technologies in Broadband Power Amplifiers  ... - 1 views

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    interesting paper for wireless energy transmission ... Duncan have a look ...
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    Yeah, its nice to see some research into semiconductors which aren't silicon. This paper would be useful for us if we wanted to do a study of the efficiency of the DC to microwave conversion systems for SPS.
Luís F. Simões

NASA Goddard to Auction off Patents for Automated Software Code Generation - 0 views

  • The technology was originally developed to handle coding of control code for spacecraft swarms, but it is broadly applicable to any commercial application where rule-based systems development is used.
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    This is related to the "Verified Software" item in NewScientist's list of ideas that will change science. At the link below you'll find the text of the patents being auctioned: http://icapoceantomo.com/item-for-sale/exclusive-license-related-improved-methodology-formally-developing-control-systems :) Patent #7,627,538 ("Swarm autonomic agents with self-destruct capability") makes for quite an interesting read: "This invention relates generally to artificial intelligence and, more particularly, to architecture for collective interactions between autonomous entities." "In some embodiments, an evolvable synthetic neural system is operably coupled to one or more evolvable synthetic neural systems in a hierarchy." "In yet another aspect, an autonomous nanotechnology swarm may comprise a plurality of workers composed of self-similar autonomic components that are arranged to perform individual tasks in furtherance of a desired objective." "In still yet another aspect, a process to construct an environment to satisfy increasingly demanding external requirements may include instantiating an embryonic evolvable neural interface and evolving the embryonic evolvable neural interface towards complex complete connectivity." "In some embodiments, NBF 500 also includes genetic algorithms (GA) 504 at each interface between autonomic components. The GAs 504 may modify the intra-ENI 202 to satisfy requirements of the SALs 502 during learning, task execution or impairment of other subsystems."
Isabelle DB

Evidence for a Collective Intelligence Factor in the Performance of Human Groups - 2 views

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    What do you think of this one ?
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    Great! Women perhaps are not more intelligent as individuals, but now at least they have more collective intelligence... Interesting research topic, though, but I doubt that any of these results can be generalized to real live situations.
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    Maybe by passing the message to ensure some men understand it would be their interest to have (more) women in their teams ? No problem at the ACT, this maybe why it works so well ? :-))
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    Well, that's perhaps the reason, why meetings were always so f... boring while I was at ACT :D
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    Lots more resources on collective intelligence: http://cci.mit.edu/
santecarloni

X Particle Explains Dark Matter and Antimatter at the Same Time | Wired Science | Wired... - 1 views

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    Interesting... however to me it looks like they have only shifted the problem... instead of looking for WIMPS now we look for X and Y and Phi...
Christos Ampatzis

YouTube - Honda Presents: LIVING WITH ROBOTS - 1 views

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    The weight support system seems to me interesting for space and astronauts...plus lets hire an asimo!
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    Come on guys, Asimo sucks! Get an iCub: http://www.youtube.com/watch?v=Dmj5TP7XIFE&feature=related
nikolas smyrlakis

The Future Of Energy? Bloom Energy Boxes Already Power Google, eBay, Others - 0 views

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    just another fuel cell?the vid is interesting
Juxi Leitner

Technology Review: Blogs: arXiv blog: Physicist Discovers How to Teleport Energy - 4 views

  • He gives the example of a string of entangled ions oscillating back and forth in an electric field trap, a bit like Newton's balls. Measuring the state of the first ion injects energy into the system in the form of a phonon, a quantum of oscillation. Hotta says that performing the right kind of measurement on the last ion extracts this energy. Since this can be done at the speed of light (in principle), the phonon doesn't travel across the intermediate ions so there is no heating of these ions. The energy has been transmitted without traveling across the intervening space.
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    wonder if we can use that to power a moon base .... or on-board a SBSP satellite
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    will still have to read the actual article but am a bit sceptic if this interpretation really will hold ... what are our fundamental physicists saying about this?
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    I am not the physicist but I thought it might be interesting, from a space security point-of-view
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    Yes it seems really interesting and opens new possibilities. However this technology review article is not very good and the guy uses terms which have a precise meaning (like teleportation), which is different from the word we know... Quantum teleportation is what we use for designing quantum computers, but we are quite far from any practical applications. This energy teleportation will allow new scheme involving energy (if it is experimentally confirmed) which is very nice. However it seems this occurs in an entangled many-body system, which the only macroscopic one I know is a bose-eintein condensate (BEC). So it would mean infuse energy in the BEC by doing a measurement on one of the atom and extract it few millimeters away by doing a measurement on another atom. very far from any long distance power transmission...
jmlloren

Data.gov - 2 views

shared by jmlloren on 24 Feb 10 - Cached
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    Interesting databases to play with data mining algorithms
LeopoldS

IISC - International Institute of Space Commerce - 5 views

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    interesting collection / source of reports linked to space ...
pacome delva

Quantum dots boost solar cell efficiencies - 2 views

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    Apparently there is a project going on in ESA on this topic led by TEC-EP, the contact person is Evelyne Simon. I really would like to do some research on these topics to see if we can find something interesting that would not have been considered in this study.
pacome delva

Accurate light-time correction due to a gravitating mass - 1 views

  • The Orbit Determination Program (ODP) of NASA's Jet Propulsion Laboratory, which was used in the data analysis, is based on an expression for the gravitational delay which differs from the standard formula; this difference is of second order in powers of $m$ -- the sun's gravitational radius -- but in Cassini's case it was much larger than the expected order of magnitude $m^2/b$, where $b$ is the ray's closest approach distance. Since the ODP does not account for any other second-order terms, it is necessary, also in view of future more accurate experiments, to systematically evaluate higher order corrections and to determine which terms are significant.
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    Some other crazy guys interested in high precision measurement of time of flight...
LeopoldS

http://www.springerlink.com/content/9476j57g1t07vhn2/fulltext.pdf - 1 views

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    interesting approach ... though don't like the GDP link, but this is subjective of course ...
nikolas smyrlakis

James Cameron's New 3-D Epic Could Change Film Forever | Magazine - 0 views

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    ACT cinema? a bit long article but interesting
LeopoldS

Panasonic plans home-use storage cell : Business : DAILY YOMIURI ONLINE (The Daily Yom... - 1 views

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    sounds a bit optimistic to me but interesting ...
pacome delva

Breakthrough of the year - physicsworld.com - 1 views

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    Interesting compilation of breakthroughs for 2009. Wanna think about a quantum algorithm ?
pacome delva

The Spiky Penis Gets the Girl - 1 views

  • the genital spines give an advantage before insemination by fastening the genitalia together like Velcro fasteners.
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    Interesting...
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    "But there was no direct way to test this. Enter laser beams." ... LOL
Nina Nadine Ridder

Top 10 Surprising Results of Global Warming | LiveScience - 5 views

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    #4 is pretty interesting 
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    first time I hear about this!!! Is there any peer reviewed paper reference to this? should impact missions like GOCE!!
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    There are (even in Science): http://science-mag.aaas.org/cgi/reprint/314/5803/1253.pdf There is also a group at UCAR (lead by S. Solomon, one of the Gods in atmospheric research) who are analyzing this effect: http://www.ucar.edu/news/releases/2006/thermosphere.shtml
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    for the drag effect, this is well known in fluid mechanics, we use the Knudsen number, which explains this phenomenon ... for a perfect gaz though!
LeopoldS

China To Spend CNY1 Billion To Protect Rural Environment - ChinaCSR.com - Corporate Soc... - 1 views

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    interesting initiative - also with respect to "space and water" a theme we should explore a bit better in my view ...
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