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LeopoldS

Cappuccino Web Framework - Build Desktop Class Applications in Objective-J and JavaScript - 2 views

shared by LeopoldS on 25 Aug 10 - Cached
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    of interest for us?
pacome delva

Condensation transition in networks and other complex systems - 4 views

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    I like this work... it mixes physics, networks and biology ! Anyone heard about her ? Here's an interesting paper found on this website: http://nuweb.neu.edu/gbianconi/condensation.pdf
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    Eh... Barabasi is really milking the golden cow :) It seems interesting, even if I don't remember enough from my statistical mechanics classes to truly understand it without a major effort. Maybe you could make a layman's science coffee about it?
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    yeah i could if there's enough interest...? do u know Barabasi ?
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    He's quite well known for his work on scale-free networks: http://en.wikipedia.org/wiki/Albert-L%C3%A1szl%C3%B3_Barab%C3%A1si He's applying them for everything and the kitchen sink :) We have a Barabasi-Albert network topology implemented in PaGMO...
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    We worked on this with Luzi a few years back ... while the analogy is original and interesting it fails to capture the dynamics of a network, e.g. if a network has hubs that grow and shrink .... Luzi worked on an extended model to solve this issue, but, if I remember correctly, he got stuck in a computationally very hard problem .... We intended to develop and use the extended model to define relevant characteristic of the ESA network formed by mail exchanges.....
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    ...but then the CMS YGT didn't really like the project
Joris _

Panel Picks 3 Finalists for ESAs Cosmic Vision M class Missions | SpaceNews.com - 3 views

  • “superb from a science standpoint,” but beyond Europe’s current budget
  • There was some questioning of the cost estimate for Euclid, but at some point you have to decide: Either you don’t believe the estimates that [ESA science program managers] produced, or you assume their estimates are credible. Euclid was the one mission where costs were debated, but the consensus was to use the cost estimates presented to us.
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    finally cross-scale is not selected, it was the only cosmic vision mission with multi-satellites formation flying, since the concept for Xeus has changed. There is still Swarm but it's not really formation flying... So ESA is missing something here...
pacome delva

3D invisibility cloak unveiled - physicsworld.com - 1 views

  • For Wegener the aim of the work is not about focusing all efforts on creating invisibility cloaks, but is about exploring a range of applications in transformation optics. This involves calculating what kind of material is needed to bend light in a certain way, by considering light trajectories as the result of the warping of space. Wegener says that transformation optics should lead, for example, to the design of better antennas or smaller optical resonators.
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    We don't have Science Express subscription here, so I have to wait till the normal paper is out. From what I heard about it, I doubt that this would have made it to Science without the names Pendry and Wegener in the autor list! Certainly, they are two of the smartest guys in Metamaterials, but they are also two of the absolut class A sellers. Pendry by definition is the first in whatever (at least in HIS talks...) but apart from this he's a very nice guy. Better let's not try to characterize Wegener...
Luís F. Simões

Coding for Outer Space - A Programming Contest | Google Lunar X PRIZE - 1 views

  • This weekend, programmers from all over Europe will be gearing up to compete in the 5'th Catalysts Coding Coding Contest (CCC'11). This year, the theme is Astronautics.
  • The competition is also open to online participants.
  • Individuals or teams of up to three people will be given a series of challenging problems that must be solved as quickly as possible.
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  • As a contestant, you must conceive of a proper solution and produce the correct output in order to advance to the next level. How you get there is completely up to you. You may use any computational means at your disposal.
  • Online contestants will not be eligible for prizes – they compete for glory alone.
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    who is interested in following this a bit closer?
Luís F. Simões

Lonely Rogue Worlds Surprisingly Outnumber Alien Planets with Suns | Alien Planets & So... - 1 views

  • Astronomers have discovered a whole new class of alien planet: a vast population of Jupiter-mass worlds that float through space without any discernible host star, a new study finds.
  • Sumi and his team looked at two years' worth of data from a telescope in New Zealand, which was monitoring 50 million Milky Way stars for microlensing events. They identified 474 such events, including 10 that lasted less than two days. The short duration of these 10 events indicated that the foreground object in each case was not a star but a planet roughly the mass of Jupiter. And the signals from their parent stars were nowhere to be found.
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    here's something we didn't consider yesterday in the meeting on extra-solar planets!
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    this is because you did not read the nature paper I have posted (see post a few lines below ...)
Luís F. Simões

The 'Facebook Class' Built Apps, and Fortunes - NYTimes.com - 1 views

  • Working in teams of three, the 75 students created apps that collectively had 16 million users in just 10 weeks. Many of those apps were sort of silly: Mr. De Lombaert’s, for example, allowed users to send “hotness” points to Facebook friends. Yet during the term, the apps, free for users, generated roughly $1 million in advertising revenue.
Marion Nachon

NASA Announces Design for New Deep Space Exploration System - 1 views

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    The Space Launch System will be NASA's first exploration-class vehicle since the Saturn V took American astronauts to the moon over 40 years ago. With its superior lift capability, the SLS will allow us to explore cis-lunar space, near-Earth asteroids, Mars and its moons and beyond.
Joris _

Global warming: Our best guess is likely wrong - 0 views

  • theoretical models cannot explain what we observe in the geological record
  • There appears to be something fundamentally wrong
  • something other than carbon dioxide caused much of the heating during the PETM
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    I find the title of the article misleading at best, but probably plainly wrong since they seem to talk about conditions way back and I am not sure how well our current models have been designed to work in these very different conditions? - but should probably be rather another good reason to put more effort into improving the models!
Joris _

Physicists Propose Scheme for Teleporting Light Beams - 0 views

  • it’s possible that a physical object (e.g. a quantum field) in one location could emerge at another location in the same quantum state
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    have to be carefull this article is really badly written. Teleportation is not some matter that disapear from somewhere to reappear somewhere else... Usually we talk about entangled particles (by essence quantum theory is non-local), and teleportation means that if you force (with a measurement) one particle to take a particular quantum state then the other one will have the same quantum state. There it seems that the same could be done with a quantum field, which is the second quantization of the quantum theory: the state of a quantum field can contain a mixture of n-particles states (meaning that the number of particles is not defined, only the mean value). If you measure the number of particle then you force the quantum field to "choose" a particular quantum state (which can be the vacuum). Teleportation means that you will have exactly the same measure on another quantum field, which is somehow intricated to your first one.
pacome delva

Attracting a mate, nano-style - 0 views

  • As well as helping us to understand the mechanisms underlying the evolution of beauty in nature, Dufresne adds that his research has the 'potential for finding a new class of photonic (light-emitting) materials, based on disordered, instead of periodic structures.'   
Joris _

$21 Billion Orbiting Solar Array will Beam Electricity to Earth - 0 views

  • The project, to be undertaken by a research group from 16 companies including Mitsubishi Heavy Industries Ltd, aims to spend the next four years developing the technology needed to beam the electricity produced to earth
  • not be commercially viable at today's prices
anonymous

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

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    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
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    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
jaihobah

Best-Ever Algorithm Found for Huge Streams of Data - 0 views

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    This best-in-class streaming algorithm works by remembering just enough of what it's seen to tell you what it's seen most frequently. It suggests that compromises that seemed intrinsic to the analysis of streaming data are not actually necessary.
jaihobah

Scientists plan huge European AI hub to compete with US - 1 views

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    "Leading scientists have drawn up plans for a vast multinational European institute devoted to world-class artificial intelligence (AI) research in a desperate bid to nurture and retain top talent in Europe. The new institute would be set up for similar reasons as Cern, the particle physics lab near Geneva, which was created after the second world war to rebuild European physics and reverse the brain drain of the brightest and best scientists to the US."
jaihobah

Black Hole Power: How String Theory Idea Could Lead to New Thermal-Energy Harvesting Te... - 0 views

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    A new class of exotic materials could find its way into next-generation technologies that efficiently convert waste heat into electrical current according to new research. Both the exotic materials and the means by which they generate electricity rely on a hybrid of advanced concepts-including string theory combined with black holes combined with cutting-edge condensed matter physics.
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    Sounds spooky
LeopoldS

These students figured out their tests were graded by AI - and the easy way to cheat - ... - 0 views

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    smart students ...
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    ... stupid AI
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