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Luís F. Simões

The Emerging Revolution in Game Theory - Technology Review - 2 views

www.technologyreview.com/...ging-revolution-in-game-theory

game theory evolution cooperation

shared by Luís F. Simões on 21 Aug 12 - No Cached
  • The world of game theory is currently on fire. In May, Freeman Dyson at Princeton University and William Press at the University of Texas announced that they had discovered a previously unknown strategy for the game of prisoner's dilemma which guarantees one player a better outcome than the other. That's a monumental surprise. Theorists have studied Prisoner's Dilemma for decades, using it as a model for the emergence of co-operation in nature. This work has had a profound impact on disciplines such as economics, evolutionary biology and, of course, game theory itself. The new result will have impact in all these areas and more.
  • Ref: arxiv.org/abs/1208.2666: Winning isn't everything: Evolutionary stability of Zero Determinant strategies
santecarloni

Coated quantum dots make superior solar cells - physicsworld.com - 0 views

physicsworld.com/...dots-make-superior-solar-cells

technology science

shared by santecarloni on 24 Aug 12 - No Cached
  • santecarloni on 24 Aug 12
     
    Researchers at the University of Toronto in Canada and KAUST in Saudi Arabia have made a solar cell out of colloidal quantum dot (CQD) films that has a record-breaking efficiency of 7%. This is almost 40% more efficient than the best previous devices based on CQDs.
Dario Izzo

Introducing the latest quasicrystal - physicsworld.com - 2 views

physicsworld.com/...47985

INF PHY

shared by Dario Izzo on 29 Nov 11 - No Cached
  • Dario Izzo on 29 Nov 11
     
    A new quasicrystal formation has been discovered using computer simulations. The formation consists of hard triangular bipyramids, each composed of two regular tetrahedra sharing a single face, and is described in a paper in Physical Review Letters by Sharon Glotzer and colleagues at the University of Michigan in the US. Great for Luis coming paper .....
santecarloni

Breakthrough could double solar electricity ouput - latimes.com - 2 views

www.latimes.com/...utput-20111216,0,3897047.story

Solar Power technology phy

shared by santecarloni on 21 Dec 11 - No Cached
  • santecarloni on 21 Dec 11
     
    A new discovery from a chemist at the University of Texas at Austin may allow photovoltaic solar cells to double their efficiency, thus providing loads more electrical power from regular sunlight.
santecarloni

Liquid metal capsules used to make self-healing electronics | ExtremeTech - 0 views

www.extremetech.com/...-make-self-healing-electronics

metal electronics technology

shared by santecarloni on 21 Dec 11 - No Cached
  • santecarloni on 21 Dec 11
     
    A crack team of engineers at the University of Illinois has developed an electronic circuit that autonomously self-heals when its metal wires are broken.
santecarloni

Three new maps shine light on dark matter - physicsworld.com - 0 views

physicsworld.com/...48273

dark matter Space PHY

shared by santecarloni on 13 Jan 12 - No Cached
  • santecarloni on 13 Jan 12
     
    Three independent teams of astronomers have released new and improved maps of where dark matter is lurking in parts of the universe
santecarloni

Getting to the froth of the matter - physicsworld.com - 1 views

physicsworld.com/...48509

Science technology

shared by santecarloni on 02 Feb 12 - No Cached
  • santecarloni on 02 Feb 12
     
    Whether it is the frothy milk on your cappuccino, the soapy suds in your bath or the large-scale structure of the universe, foams have intrigued physicists for many years. Now, for the first time in a lab, an international group of scientists has made the Weaire-Phelan foam - which physicists believe is the lowest-energy structure for a foam formed of equal-volume bubbles.
  • LeopoldS on 05 Feb 12
     
    Does this mean that there is foam that is non regular that can have even less energy structure? "which physicists believe is the lowest-energy structure for a foam formed of equal-volume bubbles."
santecarloni

Has 'new physics' been found at CERN? - physicsworld.com - 1 views

physicsworld.com/...47844

LHC Phy science

shared by santecarloni on 18 Nov 11 - No Cached
LeopoldS liked it
  • santecarloni on 18 Nov 11
     
    Physicists working on the LHCb experiment at the CERN particle-physics lab have released the best evidence yet for direct charge-parity (CP) violation in charm mesons....While more data must be analysed to confirm the result, the work could point to new physics beyond the Standard Model and help physicists understand why there is more matter than antimatter in the universe.
  • LeopoldS on 22 Nov 11
     
    lot of new physics this year ...
Aurelie Heritier

Lighter-than-air material could drastically change tech - 4 views

www.smh.com.au/...hange-tech-20120720-22emu.html

shared by Aurelie Heritier on 20 Jul 12 - No Cached
LeopoldS liked it
  • Aurelie Heritier on 20 Jul 12
     
    Aerographite. This post was originally published on Mashable. German scientists have developed a sturdy material called Aerographite made mostly of air, opening up huge implications for the future development of electronics. The jet-black, non-transparent porous carbon material - which was created by scientists at Kiel University and Hamburg University of Technology - was detailed in the July edition of scientific journal Advanced Materials .
santecarloni

How To Build A Speech Jamming Gun - Technology Review - 1 views

www.technologyreview.com/...27620

technology speech gun

shared by santecarloni on 01 Mar 12 - No Cached
LeopoldS liked it
  • santecarloni on 01 Mar 12
     
    he drone of speakers who won't stop is an inevitable experience at conferences, meetings, cinemas and public libraries.  Today, Kazutaka Kurihara at the National Institute of Advanced Industrial Science and Technology in Tskuba and Koji Tsukada at Ochanomizu University, both in Japan, present a radical solution: a speech jamming device that forces recalcitrant speakers into submission. 
  • Ma Ru on 01 Mar 12
     
    ...must...not...make...the...obvious...ACT...meeting...joke...
  • LeopoldS on 02 Mar 12
     
    Unfortunately it won't work when it is most needed .... Read this: "Their tests also identify some curious phenomena. They say the gun is more effective when the delay varies in time and more effective against speech that involves reading aloud than against spontaneous monologue. Sadly, they report that it has no effect on meaningless sound sequences such as "aaaaarghhh".
Thijs Versloot

Wall crawling gecko robots also work in space #ESA - 2 views

www.esa.int/..._robots_can_stick_in_space_too

shared by Thijs Versloot on 13 Jan 14 - No Cached
Juxi Leitner liked it
  • Thijs Versloot on 13 Jan 14
     
    The cooperation took place through ESA's Networking/Partnering Initiative, which supports work carried out by universities and research institutes on advanced technologies with potential space applications.
  • LeopoldS on 15 Jan 14
     
    really nice, especially since it is an idea that started in the team, led to an Ariadna study by Carlo Menon, RF in biomimetics who then got a research position at simon fraser univ, where he created his own biomimetics group menvra (http://menrva.ensc.sfu.ca) there, struggling as an italian in a canadian university doing space and not having access to the US space market ... the NPI was the first contract he got for a space resaerch project ... its fantastic to see his student now making headlines with this idea
Thijs Versloot

Is the Universe a simulation? - 0 views

science.slashdot.org/...n-is-our-universe-a-simulation

math science

shared by Thijs Versloot on 17 Feb 14 - No Cached
  • Thijs Versloot on 17 Feb 14
     
    'Oxford philosopher Nick Bostrom has argued that we are more likely to be in such a simulation than not,' writes Frenkel. 'If such simulations are possible in theory, he reasons, then eventually humans will create them - presumably many of them. If this is so, in time there will be many more simulated worlds than nonsimulated ones. Statistically speaking, therefore, we are more likely to be living in a simulated world than the real one.'... right...
Tom Gheysens

Movement without muscles study in insects could inspire robot and prosthetic limb devel... - 0 views

www.sciencedaily.com/...130718130524.htm

BIO science

shared by Tom Gheysens on 19 Jul 13 - No Cached
  • Tom Gheysens on 19 Jul 13
     
    Neurobiologists from the University of Leicester have shown that insect limbs can move without muscles - a finding that may provide engineers with new ways to improve the control of robotic and prosthetic limbs
johannessimon81

Cosmological model without accelerated expansion proposed - 1 views

www.nature.com/...e-may-not-be-expanding-1.13379

science cosmology

shared by johannessimon81 on 07 Aug 13 - No Cached
  • johannessimon81 on 07 Aug 13
     
    Redshift in this model is partially produced by a change in the masses of elementary particles (and atoms)
  • ...3 more comments...
  • Thijs Versloot on 25 Aug 13
     
    It seems to solve the problem of infinite energy density at the singularity in any case. I would love to see a way of experimentally verifying this, although most people seem to believe it is wrong. I read the following quote though by Dirac to Pauli "we all agree your idea is crazy, but the real question is it crazy enough to be correct?"
  • H H on 25 Aug 13
     
    As far as I can see, this is not untestable per se, rather an explanation to the redshift that is equivalent to accelerating expansion. It is not that the theory is untestable, rather just another way of looking at it. Kind of like that its sometimes convenient to consider light a particle, sometimes a wave. In the same way it could sometime convenient to view the universe as static with increasing mass instead.
  • Thijs Versloot on 26 Aug 13
     
    Well the premiss "matter getting heavier" may be up to falsification in some way or another. Currently, there is no absolute method to determine mass so it might even be plausible that this is actually the case. I don't think it is related but there is a problem with the 1kg-standards (1 official and 6 copies) where the masses seem to deviate.
  • johannessimon81 on 26 Aug 13
     
    It should not be impossible to verify a change in mass(es) over time. For example the electron cyclotron frequency scales ~e/m while the Hydrogen emission frequencies scale with ~m*e^4. Using multiple relationships like that which can be easily and accurately measured an increase in the mass of fundamental particles should - in principle - be detectable (even if the mass of the earth increases at the same time changing the relativistic reference frame).
  • Thijs Versloot on 26 Aug 13
     
    The Watt balance and a definition using the Planck's constant seems to do the trick and is currently being discussed. Would the electron charge not be problematic as it is related to Coulombs which depends on Amperes which is defined by Newtons which hence depends back on the mass again?
Tom Gheysens

Dragonflies can see by switching 'on' and 'off' - 0 views

www.sciencedaily.com/...130815104811.htm

shared by Tom Gheysens on 18 Aug 13 - No Cached
  • Tom Gheysens on 18 Aug 13
     
    Researchers at the University of Adelaide have discovered a novel and complex visual circuit in a dragonfly's brain that could one day help to improve vision systems for robots.
johannessimon81

Did a hyper-black hole spawn the Universe? - 3 views

www.nature.com/...ole-spawn-the-universe-1.13743

PHY science

shared by johannessimon81 on 16 Sep 13 - No Cached
  • johannessimon81 on 16 Sep 13
     
    Big Bang was mirage from collapsing higher-dimensional star, theorists propose.
Thijs Versloot

New evidence for oceans of water deep in the Earth @Science - 0 views

phys.org/...vidence-oceans-deep-earth.html

science earth water ocean crust

shared by Thijs Versloot on 13 Jun 14 - No Cached
  • Thijs Versloot on 13 Jun 14
     
    Researchers from Northwestern University and the University of New Mexico report evidence for potentially oceans worth of water deep beneath the United States. Though not in the familiar liquid form-the ingredients for water are bound up in rock deep in the Earth's mantle-the discovery may represent the planet's largest water reservoir.
Luís F. Simões

Singularity University, class of 2010: projects that aim to impact a billion people wit... - 8 views

www.kurzweilai.net/ty-webinar-today-sneak-preview

AI robotics biomedicine biotechnology electronics energy nanotechnology singularity futures social ethics space synthetic biology computer science defence

shared by Luís F. Simões on 22 Sep 10 - No Cached
  • Luís F. Simões on 22 Sep 10
     
    At the link below you find additional information about the projects: Education: Ten weeks to save the world http://www.nature.com/news/2010/100915/full/467266a.html
  • ...8 more comments...
  • LeopoldS on 23 Sep 10
     
    this is the podcast I was listening to ...
  • Dario Izzo on 23 Sep 10
     
    We can do it in nine :)
  • LeopoldS on 24 Sep 10
     
    why wait then?
  • Juxi Leitner on 24 Sep 10
     
    hmm, wonder how easy it is to get funding for that, 25k is a bit steep for 10weeks :)
  • Dario Izzo on 26 Sep 10
     
    well, we wait for the same fundings they get and then we will do it in nine.... as we say in Rome "a mettece un cartello so bboni tutti". (italian check for Juxi)
  • LeopoldS on 26 Sep 10
     
    and what you think about the project subjects?
  • LeopoldS on 26 Sep 10
     
    I like the fact that there are quite a lot of space projects .... and these are not even bad in my view: The space project teams have developed imaginative new solutions for space and spinoffs for Earth. The AISynBio project team is working with leading NASA scientists to design bioengineered organisms that can use available resources to mitigate harsh living environments (such as lack of air, water, food, energy, atmosphere, and gravity) - on an asteroid, for example, and also on Earth . The SpaceBio Labs team plans to develop methods for doing low-cost biological research in space, such as 3D tissue engineering and protein crystallization. The Made in Space team plans to bring 3D printing to space to make space exploration cheaper, more reliable, and fail-safe ("send the bits, not the atoms"). For example, they hope to replace some of the $1 billion worth of spare parts and tools that are on the International Space Station.
  • Dario Izzo on 26 Sep 10
     
    and all in only a three months summer graduate program!! that is impressive. God I feel so stupid!!!
  • LeopoldS on 26 Sep 10
     
    well, most good ideas probably take only a second to be formulated, it's the details that take years :-)
  • Dario Izzo on 26 Sep 10
     
    I do not think the point of the SU is to formulate new ideas (infact there is nothing new in the projects chosen). Their mission is to build and maintain a network of contacts among who they believe will be the 'future leaders' of space ... very similar to our beloved ISU.
johannessimon81

The Universe Is Programmable. We Need an API for Everything - 3 views

www.wired.com/...the-universe-is-programmable

programming science efficiency

shared by johannessimon81 on 02 May 14 - No Cached
  • johannessimon81 on 02 May 14
     
    Interesting ideas - though some metaphors are a bit far fetched. Personally, I think it could be interesting if every scientific article would also have a how-to or tutorial section that gives a recipe of how to apply the newly gained knowledge. Of course, that might be tough to do... :-)
  • Dario Izzo on 02 May 14
     
    The API of the world is already there (a bit), it is the previous knowledge developed by others. Open Source projects such as the wheel or the brick, allow everyday amazing new APPs to be build such as buildings and cars .... There still is merit, though, in learning from software developments techniques in the everyday world projects. This is indeed the motivation for the ACT to do work in open source (SOCIS, GSoC) and push its members to use stuff like wiki, svn, github, jenkins, and alike. This way we are performing and fostering (http://www.oxforddictionaries.com/definition/english/foster) research into working methods in the hope we will be able to export some of its benefit to the larger ESA.
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