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Francesco Biscani

Robot Uses 'Chaos Control' - Technology News - redOrbit - 4 views

www.redorbit.com/...index.html

ai

shared by Francesco Biscani on 18 Jan 10 - Cached
LeopoldS liked it
  • Francesco Biscani on 18 Jan 10
     
    Of any interest to our AI gurus?
  • Juxi Leitner on 21 Jan 10
     
    okay this is posted now 3 times ;) congrats you were the first :)
pacome delva

Radiocarbon Daters Tune Up Their Time Machine - 2 views

sciencenow.sciencemag.org/...3

phy archeology carbon_datation

shared by pacome delva on 18 Jan 10 - Cached
  • pacome delva on 18 Jan 10
     
    funny how a curve can change (pre)History !
  • Francesco Biscani on 18 Jan 10
     
    Reminds me of this: http://xkcd.com/687/ :)
  • Nicholas Lan on 19 Jan 10
     
    xkcd must be the new calvin and hobbes, where luzi usually has an example for any given situation
pacome delva

Algae Show a Knack for Quantum Mechanics -- Berardelli 2010 (203): 3 -- ScienceNOW - 1 views

sciencenow.sciencemag.org/...3

phy bio quantum_physics photosynthesis

shared by pacome delva on 04 Feb 10 - Cached
  • the discovery will open up a new field of research, and it could lead to a new generation of superefficient light-sensitive devices.
  • the experiments showed that the electron vibrations resulting from the photons striking the antennas persisted at full strength four times longer than expected. The reason, the researchers report this week in Nature, is that quantum mechanics controls the energy. "It was an utter surprise," says physical chemist and co-author Gregory Scholes of the University of Toronto in Canada. For the results to have occurred, he explains, a property called quantum coherence must have been operating.
  • the research "will open an entirely new area of biophysics." And that effort should have "huge implications," he says, "not only for how we think about biophysics, but also light harvesting and light-sensitive devices."
  • pacome delva on 04 Feb 10
     
    Very interesting work, showing that apparently algae mastered quantum coherence a few years before us... Inspiring for a new type of light-sensitive devices, and perhaps other applications...
pacome delva

Superconductors could simulate the brain - 2 views

physicsworld.com/...41916

superconductors brain

shared by pacome delva on 08 Mar 10 - Cached
  • who have shown how networks of artificial neurons containing two Josephson junctions would outpace more traditional computer-simulated brains by many orders of magnitude. Studying such junction-based systems could improve our understanding of long-term learning and memory along with factors that may contribute to disorders like epilepsy.
  • The existing design does not permit learning since the weighting of connections between synapses cannot be changed over time, but Segall believes that if this feature can be added then their neurons might allow a lifetime's worth of learning to be simulated in five or ten minutes. This, he adds, should help us to understand how learning changes with age and might give us clues as to how long-term disorders like Parkinson's disease develops.
  • Christos Ampatzis on 09 Mar 10
     
    What I don't get is how the measure the extent of matching: how "close", or realistic is the modelisation they achieve with different methods? And moreover, if weights cannot adapt and there are no direct connections between neurons and layers of neurons, isnt that a very arbitrary matching?
Ma Ru

Researcher Creates 'Facebook for Scientists' - 1 views

www.nytimes.com/...book-for-scientists-22081.html

inf Web 2.0 ariadnet science

shared by Ma Ru on 19 Mar 10 - Cached
  • Ma Ru on 19 Mar 10
  • ...4 more comments...
  • LeopoldS on 20 Mar 10
     
    and we are of course there since some time :-) and even have our own group in there ... think that Tobias has first discovered it our group is: https://www.researchgate.net/group/ESA_Advanced_Concepts_Team/ everybody welcome to join ... though Ariadnet is better
  • Ma Ru on 23 Mar 10
     
    So if I'm already on Ariadnet, there's no need for me to join this researchgate thingy? Pheew..
  • Luzi Bergamin on 23 Mar 10
     
    Very active group, it has exactly one member (Leo) and exactly zero (ZERO,0!!) posts since June 13, 2008!!! Well, sounds like a very typical ACT action in order to increase the key performance indicators :D.
  • Ma Ru on 23 Mar 10
     
    Oh come on Luzi, don't be over-pessimistic! It's just because all activity takes place on Ariadnet ;-)
  • nikolas smyrlakis on 24 Mar 10
     
    tsk tsk typical ex-ACT criticism.. Maybe for me too from next week;P
  • Luzi Bergamin on 24 Mar 10
     
    WRONG! You ignore the fact that I complained already while I was yet in the ACT!! Seriously: I clicked around in "ResearchGate" a little bit, couldn't find too many interesting things. Many scientists from India, Iran etc. desperately looking for contacts, retired engineers/scientists from industry that now remember that they were once at university and also quite a number of semi-crackpots. My honest conclusion: not a must. Btw: wish you a nice post-ACT depression! Keep a stiff upper lip, esp. in case you go back to Greece...
nikolas smyrlakis

mentored by the Advanced Concepts Team for Google Summer of Code 2010 - 4 views

socghop.appspot.com/...advancedconceptsteam

pagmo google summerofcode

shared by nikolas smyrlakis on 19 Mar 10 - Cached
LeopoldS liked it
  • nikolas smyrlakis on 19 Mar 10
     
    you propably already know,I post it for the twitter account and for your comments
  • ...4 more comments...
  • LeopoldS on 20 Mar 10
     
    once again one of these initiatives that came up from a situation and that would never have been possible with a top-down approach .... fantastic! and as Dario said: we are apparently where NASA still has to go with this :-)
  • Joris _ on 20 Mar 10
     
    Actually, NASA Ames did that already within the NASA Open Source Agreement in 2008 for a V&V software!
  • Joris _ on 20 Mar 10
  • LeopoldS on 20 Mar 10
     
    indeed ... you are right .... interesting project btw - they started in 1999, were in 2005 the first NASA project on Sourceforge and won several awards .... then this entry why they did not participate last year: "05/01/09: Skipping this years Google Summer-of-Code - many of you have asked why we are not participating in this years Summer of Code. The answer is that both John and Peter were too busy with other assignments to set this up in time. We will be back in 2010. At least we were able to compensate with a limited number of NASA internships to continue some of last years projects." .... but I could not find them in this years selected list - any clue?
  • LeopoldS on 20 Mar 10
     
    but in any case, according to the apple guru, Java is a dying technology, so their project might as well ...
  • Joris _ on 21 Mar 10
     
    They participate under the name "The Java Pathfinder Team" (http://babelfish.arc.nasa.gov/trac/jpf/wiki/events/soc2010). It is actually a very useful project for both education and industry (Airbus created a consortium on model checking soft, and there is a lot of research on it) As far as I know, TAS had some plans of using Java onboard spacecrafts, 2 years ago. Not sure the industry is really sensible about Jobs' opinions ;) particularly if there is no better alternative!
Nicholas Lan

volunteering for hilarious privacy/security issues - 2 views

blippy.com

web fun

shared by Nicholas Lan on 23 Mar 10 - Cached
  • Nicholas Lan on 23 Mar 10
     
    lets you link your account to a credit card and then publish whatever you just bought and what you paid for it to your facebook status/twitter feed/etc.
  • nikolas smyrlakis on 24 Mar 10
     
    looks like a joke: "Blippy is a fun and easy way to see and discuss what everyone is buying." TIME :"Made me want to spend more"" where is our world going to?
Ma Ru

Detecting gravitational waves by timing pulsars - 1 views

www.newscientist.com/...ks-relativitys-final-test.html

phy pulsars gravitational waves science

shared by Ma Ru on 18 Mar 10 - Cached
  • Ma Ru on 18 Mar 10
     
    Undoubtedly something for Pacome...
pacome delva

Quantum effect spotted in a visible object - 0 views

physicsworld.com/...42019

phy quantum_physics decoherence Schrodinger_cat

shared by pacome delva on 19 Mar 10 - Cached
  • In this way the researchers created a superposition state of the resonator where they simultaneously had an excitation in the resonator and no excitation in the resonator, such that when they measured it, the resonator has to "choose" which state it is in. "This is analogous to Schrödinger's cat being dead and alive at the same time," says Cleland.
  • pacome delva on 19 Mar 10
     
    The Schrodinger cat with drums, that's for Nik ;)
Luzi Bergamin

Physics in a Crisis - 3 views

www.rqm.ch/physics_in_a_crisis.htm

phy LHC crackpot fun

shared by Luzi Bergamin on 30 Mar 10 - Cached
  • Luzi Bergamin on 30 Mar 10
     
    Luckily I'm far away from Geneva, but this has to be said today, when the LHC starts! No, not tiny black holes will eat us (what a nonsense!), but the supernovae energy will let LHC explode!!! Pacome, I expect you to debunk this with gratest care!
  • ...2 more comments...
  • pacome delva on 30 Mar 10
     
    wtf is this! As I read this morning in the newspaper (not even a scientific one), 1 TeV is the kinetic energy of a flying mosquito... so be careful ! It seems they already sloved every thing on this website: "At the Institute for Space Quantum Physics ISQP, it was already proved in 1991-1992 that dark matter is in magnetic fields as magnetic space quantum flux." This website is the biggest source of crackpots i have seen in a long time...! (http://www.supernovae-energy.com/)
  • Ma Ru on 30 Mar 10
     
    Come on guys, this website is hilarious! "The HAITI EARTHQUAKE (...) were impossible for the Institute for Space Quantum Physics (ISQP) to compute because on one single planet was on a common line or axis with the Sun: Venus."
  • Luzi Bergamin on 30 Mar 10
     
    Unfortunately, most information I have about the guy (Hans Lehner, a Swiss) is in German, his official homepage is http://www.rqm.ch/ According to EsoWatch he is the Swiss analogue to Dr. Mills and his Blacklight power. Lehner apparently founded a company, which should have produced a "Raum-Quanten-Motor" that -- of course -- produces energy out of nothing. The theory is based on spookey forces mediated by Lehneronen. 11 Million Swiss Franks (about 8 Million Euro) were lost when the company bankrupt. And the guy is selling new stocks on his homepage again... Lehner calls another crackpot named Oliver Crane Zweistein (from Einstein being "Onestone") and himself "Dreistein". Now he is looking for Mister or Misses Vierstein. Perhaps you should apply, good luck!!
  • Nicholas Lan on 30 Mar 10
     
    i like the first line of their supernovae energy technology document "Dear potential investor:"...
LeopoldS

Spaceflight Now | Atlas Launch Report | Air Force spaceplane is an odd bird with a twis... - 3 views

spaceflightnow.com/...100402x37update

spaceflight suborbital defence

shared by LeopoldS on 06 Apr 10 - Cached
  • LeopoldS on 06 Apr 10
     
    Juxi are you following this one? any idea on its purpose?
  • Ma Ru on 07 Apr 10
     
    Not that I'm an expert in the field in any way, but there are two things I could think of: 1) possibility of bringing the payload back means that it can collect huge amounts of data which wouldn't be possible to be transferred via radio in reasonable time and/or you can bring back data you don't want to be intercepted by enemy 2) I remember reading somewhere that possibility of re-entry from orbit means you can strike any country without violating the airspace of the neighbouring countries. As the project is now managed by military, a purely civil purpose can be safely ruled out in my opinion.
Ma Ru

trois, deux, un, ... celebration of the 30 years of service - 1 views

www.happybirthday-ariane.eu

ariane space esa technology

shared by Ma Ru on 14 Apr 10 - Cached
  • Ma Ru on 14 Apr 10
     
    Some time ago ESA posted two cool videos aimed to promote the Ariane programme. The website is the final product, I believe.
pacome delva

New Intel Sensor Could Cut Electricity Bill - 3 views

www.livescience.com/...t-electricity-bill-100417.html

nrg power_management

shared by pacome delva on 19 Apr 10 - Cached
  • Once connected, the sensor will wirelessly connect to all electrical devices in the house and self configure to record the voltages from each source in real time.
  • Joris _ on 19 Apr 10
     
    "The first thing everyone did after seeing the energy graph on the family PC was to turn off the lights". Kind-of we are becoming slaves of the technology. Do we really need a sensor to tell us to turn-off the light when we are leaving the room!?
Joris _

Hawking: Aliens are out there, likely to be Bad News * The Register - 3 views

www.theregister.co.uk/...hawking_aliens_warning

aliens

shared by Joris _ on 26 Apr 10 - Cached
  • Luzi Bergamin on 26 Apr 10
     
    I think it's time to quote "Calvin & Hobbes" (yes, I'm still the guy who knows a C&H for any situation in life) "Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us." One should sue this idiot for racism against extraterrestrials!!
Juxi Leitner

A Cyborg Space Race - 1 views

www.spacedaily.com/...A_Cyborg_Space_Race_999.html

exploration robot human tech

shared by Juxi Leitner on 02 May 10 - Cached
  • There is more discussion in the space community on how to alter entire planets to suit humans - a process called "terraforming" - than there is on changing man to suit space.
  • making the machines our "avatars" for space exploration
  • Perhaps a brain implant linking us to our robots would be the next step in space exploration, greatly reducing communication time across the vast expanse of space
pacome delva

Physicists study how moral behaviour evolved - 2 views

physicsworld.com/...42540

phy ia cooperation

shared by pacome delva on 07 May 10 - Cached
  • A statistical-physics-based model may shed light on the age-old question "how can morality take root in a world where everyone is out for themselves?" Computer simulations by an international team of scientists suggest that the answer lies in how people interact with their closest neighbours rather than with the population as a whole.
  • pacome delva on 07 May 10
     
    Reminds me something... :)
  • nikolas smyrlakis on 07 May 10
     
    I check diigo for the first time since I left and my spirit is still there yeah !
pacome delva

Synthetic Genome Brings New Life to Bacterium - 0 views

www.sciencemag.org/...958

bio genomics ethics

shared by pacome delva on 21 May 10 - Cached
LeopoldS liked it
  • For 15 years, J. Craig Venter has chased a dream: to build a genome from scratch and use it to make synthetic life. Now, he and his team at the J. Craig Venter Institute (JCVI) in Rockville, Maryland, and San Diego, California, say they have realized that dream.
  • "One thing is sure," Boeke says. "Interesting creatures will be bubbling out of the Venter Institute's labs."
  • pacome delva on 21 May 10
     
    wow, a big step in genomics...!
  • Ma Ru on 21 May 10
     
    But isn't it just yet another word abuse? From what I understand, they just synthesised a genome identical to the one of an existing bacteria... while undoubtedly nice work, this is *very* far from "creating life from scratch"... The fact that you are able to copy something, doesn't mean you understand how it works...
  • pacome delva on 27 May 10
     
    well of course we are far from engineering specific functions, and this is just a copy of a function that already existed. However it is quite impressive and the first time it is done. And the challenge here is not really to "copy" the ADN, but the fact that it works... in other words it is not because you copy the ADN identically that the phenotype (traduction of the ADN) will be the same, which is the case in this experiment.
Luís F. Simões

Crowdfund a Moon Monolith Mission? - Slashdot - 1 views

idle.slashdot.org/...wdfund-a-Moon-Monolith-Mission

2001 monolith moon crowdsourcing private-spaceflight sci-fi fun

shared by Luís F. Simões on 07 Jan 11 - No Cached
  • Jamie found a somewhat amusing little essay on putting together a crowd-sourced mission to put a monolith on the moon. The author estimates it would cost half a billion dollars, which is a sum he thinks could be raised.
  • Let's raise the stakes. I propose raising half a trillion dollars to develop a time machine and put a monolith in Olduvai Gorge three million years in the past to influence Astralopithecus Afarensis evolution. Our very existence might depend on it.
nikolas smyrlakis

Good-Bye Alta-Vista, Delicious | ZDNet - 2 views

www.zdnet.com/...454

shared by nikolas smyrlakis on 17 Dec 10 - No Cached
LeopoldS liked it
  • nikolas smyrlakis on 17 Dec 10
     
    we were 1,5 year ahead to switch to diigo !
  • Ma Ru on 18 Dec 10
     
    Man, I remember, long long time ago, altavista was my first contact with the internet ever.
  • LeopoldS on 19 Dec 10
     
    indeed ... and it was largely thanks to you ... remember well the discussion in the group meeting with the arguments brought forward: why change, it works ...
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