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Thijs Versloot

Dwarf planet could illuminate the dark sector - 1 views

physicsworld.com/...uld-illuminate-the-dark-sector

science gravity dark energy matter einstein

shared by Thijs Versloot on 17 Jul 14 - No Cached
  • Thijs Versloot on 17 Jul 14
     
    A dwarf-planet candidate called UX25 and its tiny satellite could provide the first evidence of a new cosmological model that includes antigravity, say Alberto Vecchiato and Mario Gai of the Astrophysical Observatory of Turin in Italy.
Thijs Versloot

Airbus Group Creators: Airbus Protospace - 1 views

www.airbusgroup.com/...Shooting-for-the-moon.html

shared by Thijs Versloot on 08 Jun 15 - No Cached
  • Thijs Versloot on 08 Jun 15
     
    Marc Stephens "ProtoSpace embodies agility," says Vincent Loubière. "We can move from concept to demonstrator quickly." The 'agility' method is modelled on proven successes in the computer industry but the ProtoSpace team also works with automotive and communications blue-chips, as well as start-ups whose creations could have applications in aerospace. Airbus's ACT :)
Thijs Versloot

The physics of flying snakes - 1 views

arxiv.org/1309.2969

bio science

shared by Thijs Versloot on 01 Nov 13 - No Cached
  • Thijs Versloot on 01 Nov 13
     
    The researchers have created two-dimensional computer models of the flying snakes, but they've also done real-world simulations - using 3D printed components in water tunnels. Both show that snake-shaped objects would get a special aerodynamic pop should they tilt their bodies at 35 degrees as they drop from tree branches.
johannessimon81

IBM Speech Recognition, 1986 - 0 views

www.wired.com/...bms-speech-savvy-computer-1986

AI technology

shared by johannessimon81 on 09 Nov 13 - No Cached
  • johannessimon81 on 09 Nov 13
     
    Interesting historical perspective. Progress since the late '80 really seems to be fairly slow. ?: Do we need to wait for the singularity until speech recognition works without flaws?
  • ...1 more comment...
  • LeopoldS on 09 Nov 13
     
    funny - tried just yesterday the one built in on mavericks: sending one email took three times as long at least as typing it And now my speech PowerPoint Funny, trade trust yesterday they're built in speech recognition in Mavericks sending one e-mail to at least three times a talk as long as typing it. Well this was actually quite okay and relatively fast cheers nice evening
  • johannessimon81 on 13 Nov 13
     
    "I thought I would give it a try on my android sexy seems to work pretty well and I'm speaking more less at normal speed" Actually I was speaking as fast as I could because it was for the google search input - if you make a pause it will think you finished your input and start the query. Also you might notice that Android thinks it is "android sexy" - this was meant to be "on my Android. THIS seems to work...". Still it is not too bad - maybe in a year or two they have it working. Of course it might also be that I just use the word "sexy" randomly... :-\
  • Paul N on 13 Nov 13
     
    The problem is that we don't yet understand how speech in humans actually works. As long as we merely build either inference or statistical language models we'll never get perfect speech recognition. A lot of recognition in humans has a predictive/expectational basis to it that stems from our understanding of higher lvl concepts and context awareness. Sadly I suspect that as long as machines remain unembodied in their perceptual abilities their ability to either properly recognize sounds/speech or objects and other features will never reach perfection.
Athanasia Nikolaou

Swarm behaviour modified by air/sea turbulence. - 2 views

phys.org/...015-05-flocking-behaviour.html

turbulence swarm phytoplankton EarthObservation fluid MATH

shared by Athanasia Nikolaou on 26 May 15 - No Cached
  • Athanasia Nikolaou on 26 May 15
     
    Seems looking into turbulence is a source of innovative concepts. After the black hole modelling here was found a mathematical expression which describes "how turbulence can alter the shape and course of a flock of birds, a swarm of insects or even an algal bloom (phytoplankton!) and could help us to better predict them". More relevant for motions in air and sea, rather than space, where the fluids are dense enough to exhibit turbulence ; but what about a swarm moving in and exploring an exoplanet's atmosphere?
Nina Nadine Ridder

Robots collaborate to deliver meds, supplies, and even drinks - 2 views

phys.org/...8-robots-collaborate-meds.html

AI technology robots

shared by Nina Nadine Ridder on 11 Aug 15 - No Cached
  • Nina Nadine Ridder on 11 Aug 15
     
    At the recent Robotics Science and Systems (RSS) conference, a CSAIL team presented a new system of three robots that can work together to deliver items quickly, accurately and, perhaps most importantly, in unpredictable environments. The team says its models could extend to a variety of other applications, including hospitals, disaster situations, and even restaurants and bars.
Loretta Latronico Poulain

NetLogo meets R: Linking agent-based models with a toolbox for their analysis - 4 views

http://portal.acm.org/citation.cfm?id=1774855.1774939&coll=GUIDE&dl=GUIDE

INF

started by Loretta Latronico Poulain on 08 Jun 10 no follow-up yet
pacome delva

The Coolest Antiprotons - 2 views

focus.aps.org/st1

phy antiprotons antihydrogen

shared by pacome delva on 05 Jul 10 - Cached
  • Researchers cooled a cloud of about 4,000 antiprotons down to 9 kelvin using a standard approach for cooling atoms that has never been used with charged particles or ions. The technique could provide a new way to create and trap antihydrogen, which could help researchers probe a basic symmetry of nature.
  • hydrogen and antihydrogen should share many basic traits, like mass, magnetic moment, and emission spectrum. If antihydrogen and hydrogen have even slightly different spectra, it indicates some new physics principles beyond the standard model, a very big deal.
  • pacome delva on 05 Jul 10
     
    antihydrogen propulsion...?
  • ...1 more comment...
  • LeopoldS on 05 Jul 10
     
    how to efficiently direct it?
  • Nicholas Lan on 06 Jul 10
     
    didn't roger write an assessment of antimatter propulsion when he was in the ACT?
  • pacome delva on 06 Jul 10
     
    yeah the problem is the amount of antimatter you can get and more specifically how to trap it. I found that you would need around one gram to go to the outer Solar System. So we are far from that, but finding an efficient way to trap it, with an electromagnetic trap rather than solid walls is a first step !
duncan barker

Fractal Scaling Models of Natural Oscillations in Chain Systems and the Mass Distributi... - 1 views

www.ptep-online.com/...PP-20-10.PDF

shared by duncan barker on 12 Aug 10 - No Cached
  • LeopoldS on 13 Aug 10
     
    Luzi: no critical comment on this? would love to hear your opinion ...
Nina Nadine Ridder

New carbon dioxide emissions model - 1 views

www.sciencedaily.com/...100802110827.htm

carbon_cycle IPCC carbon_dioxide emission_scenarios climate_models

shared by Nina Nadine Ridder on 05 Aug 10 - Cached
LeopoldS liked it
  • In order to achieve the long-term stabilisation of the atmospheric carbon dioxide concentration, the emissions will then have to be reduced by 56 percent by the year 2050 and approach zero towards the end of this century
andreiaries

SPACE.com -- Huge Satellite Poses 150-Year Threat of Space Debris - 1 views

www.space.com/...lite-debris-threat-100726.html

space technology

shared by andreiaries on 30 Jul 10 - Cached
  • andreiaries on 30 Jul 10
     
    ESA is still at the forefront of space debris developments. But we do have a brilliant idea from the public: "Pay Communist China to shoot it down."
  • Ma Ru on 02 Aug 10
     
    Just in case you don't realise, it's the one which model is next to the Space EXPO :-) Quite a piece of debris...
LeopoldS

ACE Acronym CrEator - generate your own acronym! - 1 views

acronymcreator.net

INF fun

shared by LeopoldS on 07 Sep 10 - Cached
Ma Ru liked it
  • LeopoldS on 07 Sep 10
     
    this is how they do it :-)
  • ...1 more comment...
  • Ma Ru on 07 Sep 10
     
    Some highlights: ACuTE: Advanced Concepts TEam ADDiCT: ADvanceD Concepts Team AbDiCaTE: ADvanced Concepts TEam wASTEd: Advanced conceptS TEam
  • Ma Ru on 07 Sep 10
     
    But seriously, my PhD project title from now on becomes: Robotic mOdels maThematIcal Cognition (eROTIC)
  • LeopoldS on 07 Sep 10
     
    your thesis title fits perfectly then ...
Nicholas Lan

ignobel winners 2010 - 2 views

improbable.com/winners

fun

shared by Nicholas Lan on 14 Oct 10 - Cached
  • Nicholas Lan on 14 Oct 10
     
    cheers to luca for pointing out the management one. netlogo model "demonstrating mathematically that organizations would become more efficient if they promoted people at random."
  • ...4 more comments...
  • LeopoldS on 14 Oct 10
     
    do you trust netlogo for this? :-)
  • nikolas smyrlakis on 14 Oct 10
     
    for the ignobel or the random promotions ? :P
  • Ma Ru on 14 Oct 10
     
    Nah... Marek's recognition reward definitively goes to: "Microbiological Laboratory Hazard of Bearded Men" (...) WHO ATTENDED THE CEREMONY: Manuel S. Barbeito was unable to travel, due to health reasons. :D
  • jmlloren on 15 Oct 10
     
    The page itself should be awarded with the ugliest layout. I have suggested to our management the implementation of the random promotion. Perhaps it is the future of democracy: representatives chosen at random.
  • LeopoldS on 15 Oct 10
     
    you mean "your management" at your current place?
  • jmlloren on 15 Oct 10
     
    Yes, it is not what is written? Indeed, it is already implemented. You are talking with the director of the Institute. I have been unlucky with the toss.
duncan barker

An Extended Electromagnetic Theory - 5 views

iopscience.iop.org/...023

shared by duncan barker on 29 Oct 10 - No Cached
  • Luzi Bergamin on 29 Oct 10
     
    A very nice model how things should not be done :D
  • LeopoldS on 29 Oct 10
     
    Luzi we miss you .... :-)
LeopoldS

Phys. Rev. Lett. 105, 211303 (2010): Model for Gravity at Large Distances - 2 views

prl.aps.org/...e211303

phy science astronomy pioneer anomaly

shared by LeopoldS on 18 Nov 10 - No Cached
  • LeopoldS on 18 Nov 10
     
    Sante have a look at this ... Daniel is the TU researcher who did the study I was sending you a few years ago with Luzi - very nice and smart guy .... Luzi: now you will have difficulties in shooting :-)
Ma Ru

Venus holds warning for Earth - 0 views

www.esa.int/...SEM8Z7OWXGG_index_0.html

space climate sulphur science ESA Venus

shared by Ma Ru on 09 Dec 10 - No Cached
  • Ma Ru on 09 Dec 10
     
    Just in case you missed these one... should be of interest for ACT's climate modelling squad. "As well as telling us more about Venus, it could be sending a warning to those on Earth seeking to inject our atmosphere with sulphur droplets in an attempt to mitigate climate change."
pacome delva

Cutting Soot Counteracts Warming in California - 1 views

news.sciencemag.org/...-soot-counteracts-warming.html

phy climate_change soot

shared by pacome delva on 15 Dec 10 - No Cached
  • models suggest that cut may also have cut into the warming of the state's climate in an unexpectedly big way, preventing temperatures from climbing even higher.
  • "This indeed has major implications for mitigating climate change on a global scale," says Ramanathan. "We have the chance to see a quick global response."
LeopoldS

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

www.springerlink.com/...fulltext.pdf

NRG climate-change modelling SPS

shared by LeopoldS on 06 Dec 09 - No Cached
  • LeopoldS on 06 Dec 09
     
    interesting approach ... though don't like the GDP link, but this is subjective of course ...
Francesco Biscani

The End Of Gravity As a Fundamental Force - 6 views

science.slashdot.org/...Gravity-As-a-Fundamental-Force

phy

shared by Francesco Biscani on 11 Jan 10 - Cached
LeopoldS liked it
  • Francesco Biscani on 11 Jan 10
     
    "At a symposium at the Dutch Spinoza-instituut on 8 December, 2009, string theorist Erik Verlinde introduced a theory that derives Newton's classical mechanics. In his theory, gravity exists because of a difference in concentration of information in the empty space between two masses and its surroundings. He does not consider gravity as fundamental, but as an emergent phenomenon that arises from a deeper microscropic reality. A relativistic extension of his argument leads directly to Einstein's equations."
  • ...8 more comments...
  • Dario Izzo on 12 Jan 10
     
    Diffcult for me to fully understand / believe in the holographic principle at macroscopical scales ... potentially it looks though as a revolutionary idea.....
  • pacome delva on 13 Jan 10
     
    never heard about it... seems interesting. At first sight it seems that it is based on fundamental principle that could lead to a new phenomenology, so that could be tested. Perhaps Luzi knows more about this ? Did we ever work on this concept ?
  • Luzi Bergamin on 13 Jan 10
     
    The paper is quite long and I don't have the time right now to read it in detail. Just a few comments: * We (ACT) definitely never did anything in this direction? But: is there a new phenomenology? I'm not sure, if the aim is just to get Einstein's theory as emergent theory, then GR should not change (or only change in extreme conditions.) * Emergent gravity is not new, also Erik admits that. The claim to have found a solution appears quite frequently, but most proposals actually are not emergent at all. At least, I have the impression that Erik is aware of the relevant steps to be performed. * It's very difficult to judge from a short glance at the paper, up to which point the claims are serious and where it just starts to be advertisments. Section 6 is pretty much a collection of self-praise. * Most importantly: I don't understand how exactly space and time should be emergent. I think it's not new to observe that space is related to special canonical variables in thermodynamics. If anybody can see anything "emergent" in the first paragraphs of section 3, then please explain me. For me, this is not emergent space, but space introduced with a "sledge hammer." Time anyway seems to be a precondition, else there is nothing like energy and nothing like dynamics. * Finally, holography appears to be a precondition, to my knowledge no proof exists that normal (non-supersymmetric, non-stringy, non-whatever) GR has a holographic dual.
  • Luzi Bergamin on 13 Jan 10
     
    Update: meanwhile I understood roughly what this should be about. It's well known that BH physics follow the laws of theormodynamics, suggesting the existence of underlying microstates. But if this is true, shouldn't the gravitational force then be emergent from these microstates in the same way as any theromdynamical effect is emergent from the behavior of its constituents (e.g. a gas)? If this can be prooven, then indeed gravity is emergent. Problem: one has to proof that *any* configuration in GR may be interpreted as thermodynamical, not just BHs. That's probably where holography comes into the play. To me this smells pretty much like N=4 SYM vs. QCD. The former is not QCD, but can be solved, so all stringy people study just that one and claim to learn something about QCD. Here, we look at holographic models, GR is not holographic, but who cares... Engineering problems...
  • LeopoldS on 13 Jan 10
     
    is there any experimental or observational evidence that points to this "solution"?
  • Luzi Bergamin on 13 Jan 10
     
    Are you joking??? :D
  • pacome delva on 14 Jan 10
     
    I was a bit fast to say it could be tested... apparently we don't even know a theory that is holographic, perhaps a string theory (see http://arxiv.org/abs/hep-th/9409089v2). So very far from any test...
  • LeopoldS on 14 Jan 10
     
    Luzi, I miss you!!!
  • Luzi Bergamin on 14 Jan 10
     
    Leo, do you mean you liked my comment on your question more than Pacome's? Well, the ACT has to evolve and fledge, so no bullshitting anymore, but serious and calculating answers... :-) Sorry Pacome, nothing against you!! I just LOVE this Diigo because it gives me the opportunity for a happy revival of my ACT mood.
  • pacome delva on 14 Jan 10
     
    haha, today would have been great to show your mood... we had a talk on the connection between mind and matter !!
Ma Ru

Neuro-based olfactory model for artificial organoleptic tests - 1 views

springerlink.com/...d6q44m8214pm8rqw

BIO AI olfactory

shared by Ma Ru on 04 Feb 10 - Cached
  • Ma Ru on 04 Feb 10
     
    The paper looks to be very related to the idea that came out once from Tobias based on the work of Gilles Laurent. Unfortunately I don't have access to this journal, so I can't peep into the article itself.
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