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Luzi Bergamin

Finnish Centre of Excellence in ANALYSIS AND DYNAMICS RESEARCH - 2 views

wiki.helsinki.fi/...Home

phy bio mathematics science

shared by Luzi Bergamin on 03 Mar 10 - Cached
  • Luzi Bergamin on 03 Mar 10
     
    In case you are lacking some catchy ideas, here is the Finnish version of research that Leo certainly likes.
  • Dario Izzo on 03 Mar 10
     
    but at the end is Navier Stokes and turbulence and a few papers on fractals...... catchy?
pacome delva

Paper battery could boost energy storage - 2 views

physicsworld.com/...41267

phy nan nanoparticle carbon_nanotubes batteries

shared by pacome delva on 18 Dec 09 - Cached
  • pacome delva on 18 Dec 09
     
    watch the nice video...
pacome delva

Supernovae put dark matter in the right place - 3 views

physicsworld.com/...41399

phy astrophysics dark_matter supernovae

shared by pacome delva on 14 Jan 10 - Cached
  • “one of the best papers I have ever seen”
  • pacome delva on 14 Jan 10
     
    Well, with these huge numerical simulation you're never sure of anything... Anyway the idea sounds quite convincing and simple.
  • Francesco Biscani on 14 Jan 10
     
    Whops, sorry for the duplicate bookmark above :)
Nina Nadine Ridder

Top 10 Surprising Results of Global Warming | LiveScience - 5 views

www.livescience.com/..._global_warming_results-1.html

climate_change satellite_orbit drag atmosphere

shared by Nina Nadine Ridder on 07 Dec 09 - Cached
LeopoldS liked it
  • Nina Nadine Ridder on 07 Dec 09
     
    #4 is pretty interesting 
  • ...1 more comment...
  • LeopoldS on 08 Dec 09
     
    first time I hear about this!!! Is there any peer reviewed paper reference to this? should impact missions like GOCE!!
  • Nina Nadine Ridder on 08 Dec 09
     
    There are (even in Science): http://science-mag.aaas.org/cgi/reprint/314/5803/1253.pdf There is also a group at UCAR (lead by S. Solomon, one of the Gods in atmospheric research) who are analyzing this effect: http://www.ucar.edu/news/releases/2006/thermosphere.shtml
  • Joris _ on 08 Dec 09
     
    for the drag effect, this is well known in fluid mechanics, we use the Knudsen number, which explains this phenomenon ... for a perfect gaz though!
Tobias Seidl

Rules for Biologically Inspired Adaptive Network Design -- Tero et al. 327 (5964): 439 ... - 4 views

www.sciencemag.org/...439

BIO AI robot navigation paper

shared by Tobias Seidl on 22 Jan 10 - Cached
  • Tobias Seidl on 22 Jan 10
     
    Navigation for robtos. That's how we should have done the hybrid controller study.
  • ...3 more comments...
  • LeopoldS on 23 Jan 10
     
    and why didnt we?
  • Tobias Seidl on 25 Jan 10
     
    Because I have no clue about fungi. They are no animals. (Neither they are plants, of which I also don't have a clue.)
  • LeopoldS on 25 Jan 10
     
    so what are they then? ... and don't tell me "fungi" now ..
  • Tobias Seidl on 25 Jan 10
     
    Well, it has always been a long discussion. Fungi are according to the most recent findings definitely no plants. Since they have always been in botanic textbooks, I would assume that they were never considered animals.No fauna, no flora, no stones. Maybe they are extraterrestrials. But that wouldn't solve the questions. Maybe they are just "fungi"?
  • LeopoldS on 25 Jan 10
     
    what about then: "can we use them for space?"
Ma Ru

Neuro-based olfactory model for artificial organoleptic tests - 1 views

springerlink.com/...d6q44m8214pm8rqw

BIO AI olfactory

shared by Ma Ru on 04 Feb 10 - Cached
  • Ma Ru on 04 Feb 10
     
    The paper looks to be very related to the idea that came out once from Tobias based on the work of Gilles Laurent. Unfortunately I don't have access to this journal, so I can't peep into the article itself.
Nicholas Lan

netflix prize winners - 0 views

www.netflixprize.com/...viewtopic.php

shared by Nicholas Lan on 12 Mar 10 - Cached
  • Nicholas Lan on 12 Mar 10
     
    apologies if this has been posted before. they announced the winners in september. links to the papers of the top 3 teams
Christos Ampatzis

BBC NEWS | Health | A step closer to reading the mind - 3 views

news.bbc.co.uk/...7937926.stm

neural brain virtual reality

shared by Christos Ampatzis on 12 Mar 10 - Cached
  • Christos Ampatzis on 12 Mar 10
     
    memory cloning
  • Luzi Bergamin on 12 Mar 10
     
    "It would be very easy not to co-operate, and then it wouldn't work", that's still the important part. I'm sure Dario LOVES this paper. Would be nice to have a coffee with him right now...
Joris _

Why space shuttle exhaust races to the poles - space - 30 March 2010 - New Scientist - 6 views

www.newscientist.com/...xhaust-races-to-the-poles.html

weather nasa

shared by Joris _ on 31 Mar 10 - Cached
LeopoldS liked it
  • LeopoldS on 31 Mar 10
     
    the new scientist article does not say much but maybe the paper could be of interest to our models - Nina and Friederike, please have a look at it - hope that you can get hold of it ...
Joris _

Researchers Claim They Can Translate Infant Cries, But is it Just Noise? | Popular Science - 0 views

www.popsci.com/...ate-infant-cries-it-just-noise

shared by Joris _ on 22 Mar 10 - Cached
  • Joris _ on 22 Mar 10
     
    nice conclusion! Published paper: "Statistical method for classifying cries of baby based on pattern recognition of power spectrum" in Int. J. Biometrics, 2010, 2, 113-123
  • Ma Ru on 23 Mar 10
     
    This must have been a hot topic is space research during last months... well, at least within the ESA's Advanced Concepts Team ;-)
Nicholas Lan

self-healing of nano-structured materials following radiation damage - 2 views

www.sciencemag.org/...1631

nan radiation self-healing

shared by Nicholas Lan on 29 Mar 10 - Cached
pacome delva

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

physicsworld.com/...42043

transformation_optics cloaking

shared by pacome delva on 29 Mar 10 - Cached
  • 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.
  • Luzi Bergamin on 29 Mar 10
     
    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...
pacome delva

Invisibility cloaks shield the large and visible - physicsworld.com - 1 views

physicsworld.com/...44641

phy metamaterials transformation_optics

shared by pacome delva on 04 Jan 11 - No Cached
  • Two independent groups of physicists have built invisibility cloaks that can shield large objects lying on a plane. These "carpet cloaks" are far closer to the intuitive idea of an invisibility cloak than devices previously built, they argue, because they hide objects that can be seen with the naked eye and do so at visible wavelengths. The cloaks are also relatively cheap and easy to make, being constructed from the natural material calcite.
  • The team used a technique known as transformation optics to design their cloak.
  • Tomas Tyc of Masaryk University in the Czech Republic, who was not a member of either group, thinks that the papers "describe important achievements in the area of experimental cloaking." But he maintains that a carpet cloak is quite different to a fully fledged Harry Potter-style invisibility cloak. He points out that a carpet cloak only really works when viewing an object – be it a rucksack or a sword on someone's back, for example – side on. Otherwise the object will appear flat but still be visible.
Dario Izzo

paper shoving the advantages of morphological changes during artificial evolution - 2 views

m.pnas.org/...1015390108

ai alife evolution

shared by Dario Izzo on 20 Jan 11 - No Cached
  • Dario Izzo on 20 Jan 11
     
    Might be worth looking at for our project on evolution of gaits at different gravity level
LeopoldS

Macroscopic invisibility cloaking of visible light : Nature Communications : Nature Pub... - 3 views

www.nature.com/...ncomms1176.html

invisibility PHY science

shared by LeopoldS on 02 Feb 11 - No Cached
  • LeopoldS on 02 Feb 11
     
    and all this without magic metamaterials ...
  • ...1 more comment...
  • Luzi Bergamin on 02 Feb 11
     
    Wellwellwell! I don't know how I have to complain, since I could not yet read the full article, but I'm sure I will :-).
  • Luzi Bergamin on 02 Feb 11
     
    It's funny to see how people get more and more humble in the desperate attempt to save their stupid ideas... At the beginning was the brave and bold aim to cloak something in free space (in a sphere or a cylinder). This requires inhomogeneous, anisotropic, magnetic materials; hopeless!! So one reduces to one polarization, now we have inhomogenous, anisotropic materials; still hopeless! At this point one downgraded the pretension: instead of cloaking in free space, we make a "carpet cloak" and hide an object behind an invisible dent in a mirror. But if that shall be continuous, we still need inhomogeneity and this is very hard. So now instead of a dent we take a cone and then it is claimed to work ... for ONE polarization. But of course the cloak can't work at all incident angles... irony of fate: everything is now made from birefringent media, the antithesis of what the metamaterials dogma was at the beginning!
  • jmlloren on 04 Feb 11
     
    Hi Luzi, can you please send me the paper. We are writing a project based on sulfates and carbonates, and all this BS sounds great for the introduction (The authors used Calcite as birefringent material)
Nicholas Lan

Betting on Green - 5 views

www.economist.com/18304172

technology economics innovation

shared by Nicholas Lan on 16 Mar 11 - No Cached
  • Nicholas Lan on 16 Mar 11
     
    breakthroughs vs. accelerated deployment in climate change mitigation technologies.
  • ...2 more comments...
  • LeopoldS on 17 Mar 11
     
    interesting guy indeed ... "Forget today's green technologies like electric cars, wind turbines, solar cells and smart grids, in other words. None meets what Mr Khosla calls the "Chindia price"-the price at which people in China and India will buy them without a subsidy. "Everything's a toy until it reaches that point," he says. I also like this one since its a bit like ACT topic selection: ""I am only interested in technologies that have a 90% chance of failure but, if they do succeed, would change the infrastructure of society in some radical way," he says." should we propose SPS to him ? :-)
  • LeopoldS on 17 Mar 11
     
    one more: ""I never compute returns. If you start forecasting cash flows, you lose innovation, you lose instinct. You average yourself down to mediocrity." "I've had many more failures than successes in my life," admits Mr Khosla. "My willingness to fail gives me the ability to succeed."
  • Nicholas Lan on 17 Mar 11
     
    indeed. puts me in mind of the often reinvented private ACT idea. actually there's a bunch of interesting looking articles on his website. http://www.khoslaventures.com/khosla/papers.html . No sps in the solar one as far as i can tell :) found this bit intriguing too in that, albeit presumably out of context, it doesn't make sense ""The solution to our energy problems is almost the exact opposite of what Khosla says," declares Joseph Romm, who is the editor of Climate Progress, an influential climate blog, and a senior fellow at the Centre for American Progress Action Fund, a think-tank. "Technology breakthroughs are unlikely to be the answer. Accelerated deployment of existing technologies will get you down the cost curve much more rapidly than a breakthrough."" found this seemingly not very well considered piece (to be fair a blog post) by the guy http://climateprogress.org/2010/07/02/is-anyone-more-incoherent-than-vinod-khosla/ . maybe he's written some more convincing stuff in this vein somewhere.
  • Ma Ru on 25 Apr 11
     
    "Mr Khosla (...) is investing over $1 billion of his clients' money in black swans" Well, with his own money his approach might be a little different :-)
Nicholas Lan

Global Farming futures - 2 views

www.bis.gov.uk/...reports-and-publications

agriculture climate change

shared by Nicholas Lan on 22 Mar 11 - No Cached
  • Nicholas Lan on 22 Mar 11
     
    forecasting to 2050 wouldn't recommend the executive summary but the collection of reports seems to be quite comprehensive across a range of relevant areas "The Project has involved around 400 leading experts and stakeholders from about 35 countries across the world. Drawing upon over 100 peer-reviewed evidence paper commissioned by the Project which can be accessed in full here (hyperlink). "
Luís F. Simões

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

www.space.com/lien-planets-milky-common.html

astronomy exoplanets gravitational_lensing planet_formation

shared by Luís F. Simões on 19 May 11 - No Cached
  • 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.
  • Luís F. Simões on 19 May 11
     
    here's something we didn't consider yesterday in the meeting on extra-solar planets!
  • LeopoldS on 20 May 11
     
    this is because you did not read the nature paper I have posted (see post a few lines below ...)
Dario Izzo

Black Holes play drums - 8 views

www.jannalevin.com/science.html

shared by Dario Izzo on 08 Jun 11 - No Cached
  • Dario Izzo on 08 Jun 11
     
    Another great presentation at this conference!! Plus I always wanted to enter the numerical computations of orbit around black holes.... with Luzi we had a project on formation flying around black holes .... revolutionary idea (of course we did not do it!!!)
  • ...1 more comment...
  • Ma Ru on 08 Jun 11
     
    formation flying around black holes... so practical...
  • pacome delva on 08 Jun 11
     
    nice movie, and song :) we should definitely implement GR orbits in pagmo !
  • Dario Izzo on 08 Jun 11
     
    I agree Marek, yet was it practical for Apollonio to study conic sections more than 1500 years before Kepler found his three laws? And here is a good paper to start with: http://prd.aps.org/abstract/PRD/v77/i10/e103005, making an analogy between the periodic table and the taxomony of all orbits around a black hole.
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