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johannessimon81

New Metamaterial Camera Has Super-Fast Microwave Vision - 1 views

www.wired.com/...new-metamaterial-camera

technology science PHY

shared by johannessimon81 on 18 Jan 13 - No Cached
LeopoldS liked it
  • johannessimon81 on 18 Jan 13
     
    "The metamaterial aperature is only 40 centimeters long and it doesn't move. It's a circuit-board-like structure consisting of two copper plates separated by a piece of plastic. One of the plates is etched with repeating boxy structures, units about 2 millimeters long that permit different lengths of microwaves to pass through. Scanning the scene at various microwave frequencies allows the computer to capture all the information necessary to reproduce a scene."
  • LeopoldS on 19 Jan 13
     
    where is Luzi's comment when one needs it ???
Guido de Croon

Robotic insects make first controlled flight - 3 views

news.harvard.edu/...s-make-first-controlled-flight

science AI BIO

shared by Guido de Croon on 03 May 13 - No Cached
  • Guido de Croon on 03 May 13
     
    The Robobee takes off without guide wires! It is still powered via a wire, and the control is done with the help of a VICON system and on an external computer, but this still is an amazing feat!
  • johannessimon81 on 03 May 13
     
    The way they make this thing is just as impressive. The manufacturing technique is "pop-up book" folding, a method that has been developed by the same group and that allows a two dimensional monolithic MEMS structures to be easily assembled into a 3D structure. I actually put this as an item of the "Technology List 2020" on the wiki this morning.
  • Dario Izzo on 05 May 13
     
    I agree, manufacturing is the amazing thing here ..... as soon as the power-consumption/density problem is solved these things will really take off :)
jcunha

Engineered 'sand' may help cool electronic devices - 0 views

phys.org/...d-cool-electronic-devices.html

nanotechnology science cooling

shared by jcunha on 13 Jul 16 - No Cached
  • jcunha on 13 Jul 16
     
    Baratunde Cola would like to put sand into your computer. Not beach sand, but silicon dioxide nanoparticles coated with a high dielectric constant polymer to inexpensively provide improved cooling for increasingly power-hungry electronic devices. The silicon dioxide doesn't do the cooling itself.
Alexander Wittig

Wearable Robot Transforms Musicians into Three-Armed Drummers - 2 views

www.news.gatech.edu/...musicians-three-armed-drummers

technology

shared by Alexander Wittig on 22 Feb 16 - No Cached
  • Alexander Wittig on 22 Feb 16
     
    Now this would be really cool if it had a brain computer interface and could be controlled by a trained drummer's mind! Science and Technology Society and Culture Georgia Institute of Technology researchers have built a wearable robotic limb that allows drummers to play with three arms. The two-foot long "smart arm" can be attached to a musician's shoulder. It responds to human gestures and the music it hears.
Tobias Seidl

Frontiers | Alternatives to Peer Review: Novel Approaches for Research Evaluation | Fro... - 6 views

www.frontiersin.org/...full

peer review research Science

shared by Tobias Seidl on 19 Jan 12 - No Cached
  • Tobias Seidl on 19 Jan 12
     
    Some new field of game for the ACT?
  • LeopoldS on 20 Jan 12
     
    Very interesting paper!
Luís F. Simões

Evolution of AI Interplanetary Trajectories Reaches Human-Competitive Levels - Slashdot - 4 views

science.slashdot.org/...aches-human-competitive-levels

AI MAD GTOC PaGMO evolutionary computation trajectory optimization awards

shared by Luís F. Simões on 19 Jul 13 - No Cached
  • "It's not the Turing test just yet, but in one more domain, AI is becoming increasingly competitive with humans. This time around, it's in interplanetary trajectory optimization. From the European Space Agency comes the news that researchers from its Advanced Concepts Team have recently won the Gold 'Humies' award for their use of Evolutionary Algorithms to design a spacecraft's trajectory for exploring the Galilean moons of Jupiter (Io, Europa, Ganymede and Callisto). The problem addressed in the awarded article (PDF) was put forward by NASA/JPL in the latest edition of the Global Trajectory Optimization Competition. The team from ESA was able to automatically evolve a solution that outperforms all the entries submitted to the competition by human experts from across the world. Interestingly, as noted in the presentation to the award's jury (PDF), the team conducted their work on top of open-source tools (PaGMO / PyGMO and PyKEP)."
  • Luís F. Simões on 19 Jul 13
     
    We made it to Slashdot's frontpage !!! :)
  • Ma Ru on 23 Jul 13
     
    Congratulations, gentlemen!
annaheffernan

Physicists create 'molecules' of light - 0 views

physicsworld.com/...ists-create-molecules-of-light

PHY science

shared by annaheffernan on 27 Sep 13 - No Cached
LeopoldS liked it
  • annaheffernan on 27 Sep 13
     
    The first "molecules" made from two photons have been created by physicists in the US. The breakthrough could allow both conventional and quantum computers to encode and process information using photons.
  • johannessimon81 on 30 Sep 13
     
    I wonder if the effect also works with much larger numbers of photons involved. By slowing down any initial (Rydberg) photons and letting the later photons catch up it might be possible to create a very sharp "shock" front of photons. This could produce in itself be an ultra-short pulse of light or maybe it could be used as the trigger for massive stimulated emission in a laser.
Thijs Versloot

Does your iPhone have free will? #arXiv - 3 views

medium.com/...1e223b77e60

technology behavior

shared by Thijs Versloot on 22 Oct 13 - No Cached
  • Thijs Versloot on 22 Oct 13
     
    If you've ever found your iPhone taking control of your life, there may be a good reason. It may think it has free will. That may not be quite as far-fetched as it sounds. Today, one leading scientist outlines a 'Turing Test' for free will and says that while simple devices such as thermostats cannot pass, more complex ones like iPhones might.
  • ...3 more comments...
  • Luzi Bergamin on 22 Oct 13
     
    An interesting paper about how you should *NOT* think about free will...
  • johannessimon81 on 23 Oct 13
     
    I must say that the fact that the outcome of a thought process is not evident to myself in advance sounds like a more plausible explanation than 'free will' being the product of quantum mechanics. The later would not only produce unpredictable decisions but probably also irrational ones...
  • Paul N on 24 Oct 13
     
    Even if it were the product of quantum mechanics, it's still the result of external interference and not the result of 'free' will. It doesn't matter if the external input is deterministic or random, it's still external and it's not "YOU" that decided stuff.
  • Luzi Bergamin on 24 Oct 13
     
    I don't know the inventor of that nonsense that the free will should be the result of QM. It's about the only point I agree with the author of the paper: QM is not necessary and doesn't help. What I meant: all these thought experiments done by typical ultra-naive realists (or ultra-naive physicalists, if you prefer) that cultivate the university departments of physics, computer science etc. are put the cart before the horse. First one has to clarify the role of physical theories and its concepts (e.g. causality) and then one can start to ask how "free will" could perhaps be seen in these theories. More than 200 years ago there existed a famous philosopher named Kant who had some interesting thoughts about this. But authors like Lloyd behave as if he never existed, in fact is view of the world is even pre-Platonic!
  • LeopoldS on 27 Oct 13
     
    Henry Kissinger How I'm missing yer And wishing you were here
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.
annaheffernan

Graphene drum could store quantum information - 4 views

physicsworld.com/...ould-store-quantum-information

PHY science technology quantum

shared by annaheffernan on 06 Oct 14 - No Cached
  • annaheffernan on 06 Oct 14
     
    Devices made from resonating graphene "drums" could be used as microwave amplifiers and memory chips in quantum computers. So say researchers at the Kavli Institute of Nanoscience at the Delft University of Technology in the Netherlands, who are the first to demonstrate optomechanical coupling between a mechanical resonator and a superconducting microwave cavity.
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.
Francesco Biscani

Gamers beat algorithms at finding protein structures - 0 views

arstechnica.com/...finding-protein-structures.ars

inf

shared by Francesco Biscani on 04 Aug 10 - Cached
  • Foldit takes a hybrid approach. The Rosetta algorithm is used to create some potential starting structures, but users are then given a set of controls that let them poke and prod the protein's structure in three dimensions; displays provide live feedback on the energy of a configuration. 
  • By tracing the actions of the best players, the authors were able to figure out how the humans' excellent pattern recognition abilities gave them an edge over the computer.
  • Humans turn out to be really bad at starting from a simple linear chain of proteins; they need a rough idea of what the protein might look like before they can recognize patterns to optimize. Given a set of 10 potential structures produced by Rosetta, however, the best players were very adept at picking the one closest to the optimal configuration.
  • ...1 more annotation...
  • The authors also note that different players tended to have different strengths. Some were better at making the big adjustments needed to get near an energy minimum, while others enjoyed the fine-scale tweaking needed to fully optimize the structure. That's where Foldit's ability to enable team competitions, where different team members could handle the parts of the task most suited to their interests and abilities, really paid off.
  • Francesco Biscani on 04 Aug 10
     
    Some interesting ideas for our crowdsourcing game in here.
santecarloni

Towards an explanatory and computational theory of scientific discovery - 8 views

arxiv.org/0904.1439

social science scientific discoveries

shared by santecarloni on 15 Oct 10 - No Cached
LeopoldS liked it
  • santecarloni on 15 Oct 10
     
    Something to think about...
  • ...1 more comment...
  • LeopoldS on 18 Oct 10
     
    nice ....
  • Ma Ru on 18 Oct 10
     
    I love the fact that the journal in which the paper was published has a typo in the name...
  • LeopoldS on 20 Oct 10
     
    what typo? there is no typo that I can spot!
Francesco Biscani

BBC News - Q&A: Europa and Jupiter mission - 1 views

news.bbc.co.uk/...8537992.stm

jupiter planetology

shared by Francesco Biscani on 09 Mar 10 - Cached
  • Francesco Biscani on 09 Mar 10
     
    Informative Q&A.
  • Ma Ru on 09 Mar 10
     
    I could come up with a name for the onboard computer of the spacecraft...
Ian Carnelli

Visualizing science - 2 views

vimeo.com/6644720

fun inf

shared by Ian Carnelli on 16 Feb 10 - Cached
  • Ian Carnelli on 16 Feb 10
     
    toxiclibs is an independent, open source library collection for computational design tasks with Java & Processing
pacome delva

Landmarks: Teleportation is not Science Fiction - 0 views

focus.aps.org/st1

phy quantum_computation quantum_physics quantum_cryptography

shared by pacome delva on 11 Jan 10 - Cached
  • If a practical quantum computer is ever built, he says, it will have to make use of different kinds of quantum bits, perhaps atoms for storage and photons for transmission. So teleportation would be a natural way to connect these components, he says.
Francesco Biscani

Open Source Software Meets Do-It-Yourself Biology - 1 views

science.slashdot.org/...e-Meets-Do-It-Yourself-Biology

bio inf

shared by Francesco Biscani on 26 Jan 10 - Cached
  • Francesco Biscani on 26 Jan 10
     
    "As the shift to open source software continues, computational biology will become even more accessible, and even more powerful, while intellectual property and other bureaucracies continue to hobble traditional forms of research." Spot on, I'm very glad to see this happening :)
Juxi Leitner

Networked Networks Are Prone to Epic Failure | Wired Science | Wired.com - 1 views

www.wired.com/...networked-networks

tech networks failure

shared by Juxi Leitner on 27 Apr 10 - Cached
  • The interconnections fueled a cascading effect, with the failures coursing back and forth. A damaged node in the first network would pull down nodes in the second, which crashed nodes in the first, which brought down more in the second, and so on. And when they looked at data from a 2003 Italian power blackout, in which the electrical grid was linked to the computer network that controlled it, the patterns matched their models’ math.
  • Juxi Leitner on 27 Apr 10
     
    that would be an interesting "Systems of Systems" study for once ...
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