Group items tagged 2009 - Advanced Concepts Team

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Koreans plan space tours - Cosmic Log - msnbc.com - 0 views

cosmiclog.msnbc.msn.com/...2155857.aspx space_tourism

shared by Nina Nadine Ridder on 18 Dec 09 - Cached

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Science makes Air Guitar Hero a reality - 3 views

www.joystiq.com/...akes-air-guitar-hero-a-reality HCI BMI AI

shared by Dario Izzo on 05 Jan 10 - Cached

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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."

<div class="cArrow"> </div><div class="cContentInner">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." </div>

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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...

<div class="cArrow"> </div><div class="cContentInner">I watched it a while ago during my studies in Belgium... The plot is quite well summarized on this diagram: <a href="http://xkcd.com/657/large/" rel="nofollow" target="_blank">http://xkcd.com/657/large/</a> 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...</div>

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A Battery Made With Paper - 0 views

sciencenow.sciencemag.org/...2 phy nrg nan carbon_nanotubes batteries

shared by pacome delva on 09 Dec 09 - Cached

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China To Build Eco-City Cluster In Hubei - ChinaCSR.com - Corporate Social Responsibili... - 0 views

www.chinacsr.com/...uild-eco-city-cluster-in-hubei environment china

shared by LeopoldS on 07 Dec 09 - Cached

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

www.chinacsr.com/...n-to-protect-rural-environment water environment china policy carbon

shared by LeopoldS on 07 Dec 09 - Cached

Measuring impact of climate change from space: Gravity measurements shed light on key q... - 2 views

www.sciencedaily.com/...091209194242.htm climate_change climate_research GRACE earth_observation

shared by Nina Nadine Ridder on 10 Dec 09 - Cached

Digital Quantum Batteries Theoretically Could Have Ten Times Energy Density of Lithium ... - 1 views

nextbigfuture.com/...m-batteries-theoretically.html tech nrg nanotubes

shared by Juxi Leitner on 21 Dec 09 - No Cached

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Pi Computation Record - 4 views

bellard.org/pi2700e9 inf

shared by Francesco Biscani on 06 Jan 10 - Cached

Francesco Biscani on 06 Jan 10

For Dario: the PI computation record was established on a single desktop computer using a cache optimized algorithm. Previous record was obtained by a cluster of hundreds of computers. The cache optimized algorithm was 20 times faster.

<div class="cArrow"> </div><div class="cContentInner">For Dario: the PI computation record was established on a single desktop computer using a cache optimized algorithm. Previous record was obtained by a cluster of hundreds of computers. The cache optimized algorithm was 20 times faster.</div>

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Ma Ru on 06 Jan 10

Teeeeheeeeheeee... assembler programmers greet Java/Python/Etc. programmers :)

<div class="cArrow"> </div><div class="cContentInner">Teeeeheeeeheeee... assembler programmers greet Java/Python/Etc. programmers :)</div>

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Dario Izzo on 07 Jan 10

And he seems to have done everything in his free time!!! I like the first FAQ.... "why did you do it?"

<div class="cArrow"> </div><div class="cContentInner">And he seems to have done everything in his free time!!! I like the first FAQ.... "why did you do it?"</div>

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nikolas smyrlakis on 07 Jan 10

this is the guy btw http://en.wikipedia.org/wiki/Fabrice_Bellard

<div class="cArrow"> </div><div class="cContentInner">this is the guy btw <a href="http://en.wikipedia.org/wiki/Fabrice_Bellard" rel="nofollow" target="_blank">http://en.wikipedia.org/wiki/Fabrice_Bellard</a></div>

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LeopoldS on 07 Jan 10

did you read any of the books he recommends? suggest: Modern Computer Arithmetic by Richard Brent and Paul Zimmermann, version 0.4, November 2009, Full text available here. The Art of Computer Programming, volume 2 : Seminumerical Algorithms by Donald E. Knuth, Addison-Wesley, third edition, 1998. More information here.

<div class="cArrow"> </div><div class="cContentInner">did you read any of the books he recommends? suggest: Modern Computer Arithmetic by Richard Brent and Paul Zimmermann, version 0.4, November 2009, Full text available here. The Art of Computer Programming, volume 2 : Seminumerical Algorithms by Donald E. Knuth, Addison-Wesley, third edition, 1998. More information here.</div>

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LeopoldS on 07 Jan 10

btw: we will very soon have the very same processor in the new iMac .... what record are you going to beat with it?

<div class="cArrow"> </div><div class="cContentInner">btw: we will very soon have the very same processor in the new iMac .... what record are you going to beat with it?</div>

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Francesco Biscani on 08 Jan 10

Zimmerman is the same guy behind the MPFR multiprecision floating-point library, if I recall correctly: http://www.mpfr.org/credit.html I've not read the book... Multiprecision arithmetic is a huge topic though, at least from the scientific and number theory point of view if not for its applications to engineering problems. "The art of computer programming" is probably the closest thing to a bible for computer scientists :)

<div class="cArrow"> </div><div class="cContentInner">Zimmerman is the same guy behind the MPFR multiprecision floating-point library, if I recall correctly: <a href="http://www.mpfr.org/credit.html" rel="nofollow" target="_blank">http://www.mpfr.org/credit.html</a> I've not read the book... Multiprecision arithmetic is a huge topic though, at least from the scientific and number theory point of view if not for its applications to engineering problems. "The art of computer programming" is probably the closest thing to a bible for computer scientists :)</div>

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Francesco Biscani on 08 Jan 10

"btw: we will very soon have the very same processor in the new iMac .... what record are you going to beat with it?" Fastest Linux install on an iMac :)

<div class="cArrow"> </div><div class="cContentInner">"btw: we will very soon have the very same processor in the new iMac .... what record are you going to beat with it?" Fastest Linux install on an iMac :)</div>

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Juxi Leitner on 08 Jan 10

"Fastest Linux install on an iMac :)" that is going to be a though one but a worthy aim! ""The art of computer programming" is probably the closest thing to a bible for computer scientists :)" yep! Programming is art ;)

<div class="cArrow"> </div><div class="cContentInner">"Fastest Linux install on an iMac :)" that is going to be a though one but a worthy aim! ""The art of computer programming" is probably the closest thing to a bible for computer scientists :)" yep! Programming is art ;)</div>

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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

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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."

<div class="cArrow"> </div><div class="cContentInner">"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."</div>

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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.....

<div class="cArrow"> </div><div class="cContentInner">Diffcult for me to fully understand / believe in the holographic principle at macroscopical scales ... potentially it looks though as a revolutionary idea.....</div>

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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 ?

<div class="cArrow"> </div><div class="cContentInner">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 ?</div>

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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.

<div class="cArrow"> </div><div class="cContentInner">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.</div>

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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...

<div class="cArrow"> </div><div class="cContentInner">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...</div>

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LeopoldS on 13 Jan 10

is there any experimental or observational evidence that points to this "solution"?

<div class="cArrow"> </div><div class="cContentInner">is there any experimental or observational evidence that points to this "solution"?</div>

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Luzi Bergamin on 13 Jan 10

Are you joking??? :D

<div class="cArrow"> </div><div class="cContentInner">Are you joking??? :D</div>

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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...

<div class="cArrow"> </div><div class="cContentInner">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 <a href="http://arxiv.org/abs/hep-th/9409089v2" rel="nofollow" target="_blank">http://arxiv.org/abs/hep-th/9409089v2</a>). So very far from any test...</div>

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LeopoldS on 14 Jan 10

Luzi, I miss you!!!

<div class="cArrow"> </div><div class="cContentInner">Luzi, I miss you!!!</div>

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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.

<div class="cArrow"> </div><div class="cContentInner">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.</div>

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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 !!

<div class="cArrow"> </div><div class="cContentInner">haha, today would have been great to show your mood... we had a talk on the connection between mind and matter !!</div>

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Brain Chips: Artificial Intelligence Is All in Your Head - GigaOM - 1 views

gigaom.com/...artificial-intelligence brain machine interface technology

shared by Juxi Leitner on 22 Jan 10 - Cached

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Hubble 3D IMAX Trailer Released, Looks Amazing | Popular Science - 2 views

www.popsci.com/...rescue-mission-imax-3d-trailer hubble imax

shared by Joris _ on 22 Jan 10 - Cached

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A Brief, Incomplete, and Mostly Wrong History of Programming Languages - 2 views

james-iry.blogspot.com/...complete-and-mostly-wrong.html inf

shared by Francesco Biscani on 11 May 10 - Cached

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50 Great Examples of Data Visualizatio - 2 views

www.webdesignerdepot.com/...examples-of-data-visualization data visualization

shared by Dario Izzo on 18 Feb 11 - Cached

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Why Randomly-Selected Politicians Would Improve Democracy - Technology Review - 4 views

www.technologyreview.com/...26488 CMS politics Ig Nobel

shared by Luís F. Simões on 10 Mar 11 - No Cached

LeopoldS liked it

If Pluchino sounds familiar, it's because we've talked about him and his pals before in relation to the Peter Principle that incompetence always spreads through big organisations. Back in 2009, he and his buddies created a model that showed how promoting people at random always improves the efficiency of the organisation. These guys went on to win a well-deserved IgNobel prize for this work.
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Ref: arxiv.org/abs/1103.1224: Accidental Politicians: How Randomly Selected Legislators Can Improve Parliament Efficiency
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Luzi Bergamin on 10 Mar 11

I think I start to understand why Italian politics does so horribly bad...

<div class="cArrow"> </div><div class="cContentInner">I think I start to understand why Italian politics does so horribly bad...</div>

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LeopoldS on 10 Mar 11

... because they don't follow this rule!

<div class="cArrow"> </div><div class="cContentInner">... because they don't follow this rule!</div>

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Dario Izzo on 11 Mar 11

According to the authors we have four types of people in the parlement: 1) intelligent people whose actions produce a gain for both themselves and for other people. 2) helpless/naive people in the top left quadrant whose actions produce a loss for themselves but a gain for others; 3) bandits whose actions produce a gain for themselves but a loss for other people. 4) stupid people in the bottom left quadrant produce a loss for themselves and also for other people. According to the above definition it is clear that their model does not apply to the italian parlament where we only have stupid people and bandits.

<div class="cArrow"> </div><div class="cContentInner">According to the authors we have four types of people in the parlement: 1) intelligent people whose actions produce a gain for both themselves and for other people. 2) helpless/naive people in the top left quadrant whose actions produce a loss for themselves but a gain for others; 3) bandits whose actions produce a gain for themselves but a loss for other people. 4) stupid people in the bottom left quadrant produce a loss for themselves and also for other people. According to the above definition it is clear that their model does not apply to the italian parlament where we only have stupid people and bandits.</div>

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Nanometric butterfly wings created (10/9/2009) - 0 views

www.biomimicrynews.com/...ic_butterfly_wings_created.asp BIO NAN insects butterflies optics

shared by Tobias Seidl on 14 Oct 09 - Cached

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Why We Love to Hate Awards - Freakonomics Blog - NYTimes.com - 0 views

freakonomics.blogs.nytimes.com/...why-we-love-to-hate-awards nytimes freakonomics CMS obama wine

shared by nikolas smyrlakis on 20 Oct 09 - Cached

nikolas smyrlakis on 20 Oct 09

[spam] Obama expressed his disappointment recently when rapper Kanye West stormed the stage at the MTV Video Music Awards to protest singer Taylor Swift's win of the "Best Female Video" trophy. Soon after, Obama himself was Swifted by critics who felt he was undeserving of his Nobel Prize win. It is obviously connected to the study of the Journal of Wine Economics that wine gold awards are given randomly http://www.wine-economics.org/journal/content/Volume4/number1/Full%20Texts/1_wine%20economics_vol%204_1_Robert%20Hodgson.pdf which also raised some controversy

<div class="cArrow"> </div><div class="cContentInner">[spam] Obama expressed his disappointment recently when rapper Kanye West stormed the stage at the MTV Video Music Awards to protest singer Taylor Swift's win of the "Best Female Video" trophy. Soon after, Obama himself was Swifted by critics who felt he was undeserving of his Nobel Prize win. It is obviously connected to the study of the Journal of Wine Economics that wine gold awards are given randomly <a href="http://www.wine-economics.org/journal/content/Volume4/number1/Full%20Texts/1_wine%20economics_vol%204_1_Robert%20Hodgson.pdf" rel="nofollow" target="_blank">http://www.wine-economics.org/journal/content/Volume4/number1/Full%20Texts/1_wine%20economics_vol%204_1_Robert%20Hodgson.pdf</a> which also raised some controversy</div>

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Cheetah, Gecko and Spiders Inspire Robotic Designs | Gadget Lab | Wired.com - 1 views

www.wired.com/...1 BIO spider cockroach robot

shared by Tobias Seidl on 19 Oct 09 - Cached

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Rocket company tests world's most powerful ion engine - space - 05 October 2009 - New S... - 2 views

www.newscientist.com/...-most-powerful-ion-engine.html technology phy propulsion ion engine

shared by Juxi Leitner on 06 Oct 09 - Cached

World-first Sustainable Racing Car Runs On Chocolate, To Take On Formula 3 - 2 views

www.sciencedaily.com/...091005123048.htm biofuel

shared by Nina Nadine Ridder on 09 Oct 09 - Cached

Group items tagged

Koreans plan space tours - Cosmic Log - msnbc.com - 0 views

Science makes Air Guitar Hero a reality - 3 views

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

A Battery Made With Paper - 0 views

China To Build Eco-City Cluster In Hubei - ChinaCSR.com - Corporate Social Responsibili... - 0 views

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

Measuring impact of climate change from space: Gravity measurements shed light on key q... - 2 views

Digital Quantum Batteries Theoretically Could Have Ten Times Energy Density of Lithium ... - 1 views

Pi Computation Record - 4 views

The End Of Gravity As a Fundamental Force - 6 views

Brain Chips: Artificial Intelligence Is All in Your Head - GigaOM - 1 views

Hubble 3D IMAX Trailer Released, Looks Amazing | Popular Science - 2 views

A Brief, Incomplete, and Mostly Wrong History of Programming Languages - 2 views

50 Great Examples of Data Visualizatio - 2 views

Why Randomly-Selected Politicians Would Improve Democracy - Technology Review - 4 views

Nanometric butterfly wings created (10/9/2009) - 0 views

Why We Love to Hate Awards - Freakonomics Blog - NYTimes.com - 0 views

Cheetah, Gecko and Spiders Inspire Robotic Designs | Gadget Lab | Wired.com - 1 views

Rocket company tests world's most powerful ion engine - space - 05 October 2009 - New S... - 2 views

World-first Sustainable Racing Car Runs On Chocolate, To Take On Formula 3 - 2 views

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