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nikolas smyrlakis

Your Favorite Sci-Fi Movies, 2000 and Beyond | Underwire | Wired.com - 0 views

www.wired.com/...5

sci-fi movies primer wired

shared by nikolas smyrlakis on 09 Dec 09 - Cached
  • nikolas smyrlakis on 09 Dec 09
     
    some ideas for movie Fridays A "must" see on my opinion (never heard about it in the past!) : Primer Sounds ideal: "Primer is a 2004 American science fiction film about the accidental discovery of time travel. The film was written, directed and produced by Shane Carruth, a mathematician and a former engineer, and was completed on a budget of $7,000.[1] Primer is of note for its extremely low budget, experimental plot structure and complex technical dialogue, which Carruth chose not to 'dumb down' for the sake of his audience. One reviewer said that "anybody who claims [to] fully understand what's going on in Primer after seeing it just once is either a savant or a liar."[2] The film collected the Grand Jury Prize at Sundance in 2004 before securing a limited release in US cinemas, and has since gained a cult following."
  • Ma Ru on 09 Dec 09
     
    I watched it a while ago during my studies in Belgium... The plot is quite well summarized on this diagram: http://xkcd.com/657/large/ According to the text above I'm either savant or a liar (you choose). But I watched the movie under significant exposure to Belgian beer, so this may have helped...
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 !!
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?
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.
Juxi Leitner

Darwin's - 0 views

www.dailygalaxy.com/...of-origins-of-the-species.html

biochemistry molecular machines

shared by Juxi Leitner on 15 Sep 09 - Cached
  • Juxi Leitner on 15 Sep 09
     
    An international team of biochemists have discovered evidence at the molecular level in support of one of the key tenets of Darwin's theory of evolution that provides a blueprint for a general understanding of the evolution of the "machinery" of...
ESA ACT

CREATIVE SOLUTIONS TO PROBLEMS (16-Mar-1999) - 0 views

www-formal.stanford.edu/...creative.html

AI Creativity INF computing

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    excellent paper easy to understand and containing interesting ideas on what is creativity in a computer program (DI)
ESA ACT

All Optical Interface for Parallel, Remote, and Spatiotemporal Control of Neuronal Acti... - 0 views

pubs.acs.org/...nl072783t.html

BIO biocontroller bmi

shared by ESA ACT on 24 Apr 09 - No Cached
  • ESA ACT on 24 Apr 09
     
    A key technical barrier to furthering our understanding of complex neural networks has been the lack of tools for the simultaneous spatiotemporal control and detection of activity in a large number of neurons.
ESA ACT

0704.3005v1.pdf (application/pdf Object) - 0 views

arxiv.org/...0704.3005v1.pdf

BIO paper neurophysiology

shared by ESA ACT on 24 Apr 09 - No Cached
  • ESA ACT on 24 Apr 09
     
    Understanding how memory works in a brain. Not the last paper on this topic, I assume.
ESA ACT

Materials Today : The top ten advances in materials science - 0 views

www.sciencedirect.com/science

NAN technology materials

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    What are the defining discoveries, moments of inspiration, or shifts in understanding that have shaped the dynamic field of materials science we know today. Here's what we think are the most significant.
ESA ACT

Solid-state, microchip-sized fan promises to cool laptops - Engadget - 0 views

www.engadget.com/...d-fan-promises-to-cool-laptops

electronics

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    could this also be useful - I doubt so since it seems to use air flow for cooling but don#t really understand the mechanisms ...
ESA ACT

SciBX: Science-Business eXchange - 0 views

www.scibx.com/index.html

Research

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    is a groundbreaking weekly publication that provides a timely, concise, and understandable analysis of the scientific content and commercial potential of the most important translational research papers from across the life science literature.
ESA ACT

Nissan BR23C robot car: Japanese bee craziness - Crave at CNET.co.uk - 0 views

crave.cnet.co.uk/...0,39029552,49299132,00.htm

BIO bee car neural

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    An short article about something called biomimetics. To all I understand, it is not.
ESA ACT

Klima - Wissenschaft - Wissen - ZEIT online - 0 views

www.zeit.de/U-Klimatismus

Sustainability StrategicPlanning social psychology

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    sorry, too nice not to post it even if only for those who also understand german ... (LS)
ESA ACT

Go for a journey into up to 4 dimensions... - 0 views

www.dimensions-math.org/Dim_regarder_E.htm

mathematics math science dimension fractals movie

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    [MaRu] Are you curious about the origin of images I put on my desktop wallpaper? This 2-hours (!) movie should help you understand what they are and where do they come from. Even if you're a biologist ;-) You can watch the trailer here: http://youtube.com
ESA ACT

Blue Brain Project - 1 views

bluebrain.epfl.ch

INF BIO AI brain computing neuroscience

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    The Blue Brain project is the first comprehensive attempt to reverse-engineer the mammalian brain, in order to understand brain function and dysfunction through detailed simulations.
ESA ACT

FQXi: Foundational Questions in Physics & Cosmology - 0 views

www.fqxi.org

science Research physics astronomy cosmology PHY

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    To catalyze, support, and disseminate research on questions at the foundations of physics and cosmology, particularly new frontiers and innovative ideas integral to a deep understanding of reality but unlikely to be supported by conventional funding sourc
santecarloni

Six rules for nano-design - physicsworld.com - 1 views

physicsworld.com/...47525

technology NAN phy

shared by santecarloni on 21 Oct 11 - No Cached
  • santecarloni on 21 Oct 11
     
    a group of scientists in the US has formulated a set of basic rules that could help understanding how particles interact at the nanoscale
  • santecarloni on 21 Oct 11
     
    The most trivial application is to triple the bandwidth capability of an antenna.... working on some more exotic stuff...
anonymous

Deep Neural Networks are Easily Fooled: High Confidence Predictions for Unrecognizable ... - 4 views

arxiv.org/1412.1897

AI neural networks images deep learning

shared by anonymous on 10 Dec 14 - No Cached
  • anonymous on 10 Dec 14
     
    Other possible study: get a textbook example of an image of a pen, evolve it just enough so NN can't recognize it anymore, while minimizing the distance between the original and evolved images. EDIT: Its been done already: http://cs.nyu.edu/~zaremba/docs/understanding.pdf
  • Paul N on 11 Dec 14
     
    Of course, you can't really use them to extrapolate. The unknown unknown is always the trickiest :P They should just make another class "random bullshit", really and dump all of this stuff in there. I think there's a potential paper right there
jcunha

New angry birds type game with cats and quantum mechanics - 6 views

phys.org/...uantum-cats-game-concepts.html

technology PHY quantum

shared by jcunha on 06 Oct 15 - No Cached
  • jcunha on 06 Oct 15
     
    "A new Angry Birds-style game is set to help launch a new understanding of quantum science. Some find the concepts of quantum science confusing or unintuitive. Einstein even called quantum effects "spooky." To help people better understand some of the core concepts of quantum science, the Institute for Quantum Computing (IQC) at the University of Waterloo is launching a game - the Quantum Cats" Looking forward to see the ACT winning the Quantum Cats competition :)
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