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Thijs Versloot

Acoustic tractor beam - 1 views

phys.org/...2014-05-acoustic-tractor.html

technology acoustic scifi PHY

shared by Thijs Versloot on 08 May 14 - No Cached
annaheffernan liked it
  • Thijs Versloot on 08 May 14
     
    Some cheating involved
  • johannessimon81 on 09 May 14
     
    Reminds me a bit of optical tweezers - although the principle seems somewhat different. Could the optical tweezers principle be applied through sound? http://en.wikipedia.org/wiki/Optical_tweezers
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.
LeopoldS

WebHome < About < Foswiki - 3 views

foswiki.org/WebHome

INF technology Wiki

shared by LeopoldS on 15 Jun 10 - Cached
  • LeopoldS on 15 Jun 10
     
    of interest to us? ESA?
  • Francesco Biscani on 15 Jun 10
     
    Good catch, seems pretty nifty. I'm going to give it a spin.
  • LeopoldS on 15 Jun 10
     
    perfect - let me know ... thanks
Joris _

A Singularity Approach to Space: Beamed Propulsion, AI, and Iridium on Steroids | Parab... - 8 views

www.parabolicarc.com/...ed-propulsion-iridium-steroids

technology

shared by Joris _ on 31 Aug 10 - Cached
Juxi Leitner liked it
  • Christos Ampatzis on 01 Sep 10
     
    you know what? if you exclude the title it is not so much bullshit! "Send a robot out into space - allow people to experience space via a virtual environment" I have always loved this idea!
  • ...2 more comments...
  • Juxi Leitner on 05 Sep 10
     
    do you want to add some of that to the humanoids in space acta futura article?
  • Joris _ on 06 Sep 10
     
    I looked at the wiki input on this, but I don't know what I should do. Aren't you writing the article. I definitely think there are some stuffs to pick up on the list and develop further.
  • Juxi Leitner on 06 Sep 10
     
    yeah i do but input is always more than welcome =)
  • LeopoldS on 07 Sep 10
     
    "I have always loved this idea!" - me too!!!
Dario Izzo

Open Source Aerospace Project - 3 views

hobbyspace.com/nucleus

pagmo inf opensource wiki

shared by Dario Izzo on 05 Aug 10 - Cached
LeopoldS liked it
  • Dario Izzo on 05 Aug 10
     
    similar idea to ours.... but implemented
Luís F. Simões

Timelapse video of asteroid discoveries in our solar system from 1980-2010 (watch in 10... - 5 views

www.youtube.com/watch

asteroid detection solar system WISE

shared by Luís F. Simões on 13 Sep 10 - No Cached
Joris _ liked it
  • Ma Ru on 14 Sep 10
     
    Nice... Now I have a lame question: after you have discovered ~500k asteroids, all moving (I assume more or less) chaotically in that asteroid belt, how do you tell one from another?
  • ...1 more comment...
  • Joris _ on 14 Sep 10
     
    hmm, not very chaotic indeed - laws of Kepler plus some perturbations.
  • Ma Ru on 15 Sep 10
     
    That's what I thought but when presented as a green "goo" in the video, it appears rather unordered... so I guess this is just an impression evoked by a not-to-scale presentation?
  • Francesco Biscani on 19 Sep 10
     
    It depends... orbits can be chaotic if the orbital period is in a resonance with Jupiter, although such orbits are not stable. Such configurations tend to get disrupted pretty quickly (in cosmic terms :P) http://en.wikipedia.org/wiki/Kirkwood_gap
Joris _

Kinect Steers Quadrocopter Drone to Search and Destroy | Popular Science - 0 views

www.popsci.com/...t-hack-guides-uav-quadrocopter

INF MAD

shared by Joris _ on 07 Dec 10 - No Cached
  • Joris _ on 07 Dec 10
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?
Dario Izzo

Past Future Predictions - 3 views

www.ethologic.com/...pastpred.txt

futurology forecast technology forecast

shared by Dario Izzo on 07 Dec 09 - Cached
  • Dario Izzo on 07 Dec 09
     
    "Computers in the future may weigh no more than 1.5 tons." Underoptimistic ... Excellent source of inspiration and quotation for all our reports
  • LeopoldS on 08 Dec 09
     
    put them on the wiki ....
  • Francesco Biscani on 10 Dec 09
     
    "Computers in the future may weigh no more than 1.5 tons." Technically, this is a correct prediction :P
pacome delva

"Quantum trampoline" measures gravity - 2 views

physicsworld.com/...41208

phy atom_interferometry atom_gravimeter

shared by pacome delva on 15 Dec 09 - Cached
  • Physicists in France have come up with a new way of using bouncing ultracold atoms to measure the acceleration due to gravity. The technique involves firing vertical laser pulses at a collection of free-falling atoms, which bounces some atoms higher than others. When the atoms recombine at the centre of the experiment, they create an interference pattern that reveals that g is 9.809&nbsp;m/s2 – just as expected for their Paris lab.
  • pacome delva on 15 Dec 09
     
    That's the lab I worked...
  • Dario Izzo on 16 Dec 09
     
    just being cinical ... but did not we know that g = 9.809 in Paris? I can also create a complex measurement procedure that will held pi = 3.1415, just as expected!!!
  • pacome delva on 17 Dec 09
     
    well, sure... the interest of such gravimeter is to be absolute, and for now slightly more accurate than the other type of absolute gravimeter which uses retroreflector and interferometry ( http://en.wikipedia.org/wiki/Gravimeter ). While the latter ones reached their limit in term of sensitivity, the atomic ones can be enhanced in many ways (using cooler atoms, better optics, etc...)
pacome delva

TeamParis-SynthEthics - 5 views

2009.igem.org/...TeamParis-SynthEthics.pdf

bio human_sciences ethics

shared by pacome delva on 27 Nov 09 - No Cached
  • pacome delva on 27 Nov 09
     
    This is an interesting report from a student in sociology, who worked with a group of scientists on a synthetic biology project for the competition IGEM (http://2009.igem.org/Main_Page). This is what happen when you mix hard and soft sciences. For this project they won the special prize for "Best Human Practices Advance". You can read the part on self or exploded governance (p.34). When reading parts of this reports, I thought that it could be good to have a stagiaire or a YGT in human science to see if we can raise interesting question about ethics for the space sector. There are many questions I'm sure, about the governance, the legitimacy of spending millions to go in space, etc...
Francesco Biscani

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.
  • ...6 more comments...
  • Ma Ru on 06 Jan 10
     
    Teeeeheeeeheeee... assembler programmers greet Java/Python/Etc. programmers :)
  • 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?"
  • nikolas smyrlakis on 07 Jan 10
  • 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.
  • 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?
  • 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 :)
  • 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 :)
  • 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 ;)
Joris _

Space shuttles for sale - Short Sharp Science - New Scientist - 4 views

www.newscientist.com/...space-shuttles-for-sale.html

Space shuttle

shared by Joris _ on 19 Jan 10 - Cached
  • If an entire shuttle is beyond your budget, consider a main engine instead. NASA had hoped to charge up to $800,000 for these but lack of interest has forced it to slash the price. They are now available for free
  • Nicholas Lan on 19 Jan 10
     
    will it fit in diego's van?
pacome delva

Condensation transition in networks and other complex systems - 4 views

nuweb.neu.edu/...Condensation.html

phy bio complex_networks

shared by pacome delva on 15 Jan 10 - Cached
  • pacome delva on 15 Jan 10
     
    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
  • ...3 more comments...
  • Francesco Biscani on 15 Jan 10
     
    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?
  • pacome delva on 15 Jan 10
     
    yeah i could if there's enough interest...? do u know Barabasi ?
  • Francesco Biscani on 15 Jan 10
     
    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...
  • Dario Izzo on 16 Jan 10
     
    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.....
  • nikolas smyrlakis on 18 Jan 10
     
    ...but then the CMS YGT didn't really like the project
nikolas smyrlakis

mentored by the Advanced Concepts Team for Google Summer of Code 2010 - 4 views

socghop.appspot.com/...advancedconceptsteam

pagmo google summerofcode

shared by nikolas smyrlakis on 19 Mar 10 - Cached
LeopoldS liked it
  • nikolas smyrlakis on 19 Mar 10
     
    you propably already know,I post it for the twitter account and for your comments
  • ...4 more comments...
  • LeopoldS on 20 Mar 10
     
    once again one of these initiatives that came up from a situation and that would never have been possible with a top-down approach .... fantastic! and as Dario said: we are apparently where NASA still has to go with this :-)
  • Joris _ on 20 Mar 10
     
    Actually, NASA Ames did that already within the NASA Open Source Agreement in 2008 for a V&V software!
  • Joris _ on 20 Mar 10
  • LeopoldS on 20 Mar 10
     
    indeed ... you are right .... interesting project btw - they started in 1999, were in 2005 the first NASA project on Sourceforge and won several awards .... then this entry why they did not participate last year: "05/01/09: Skipping this years Google Summer-of-Code - many of you have asked why we are not participating in this years Summer of Code. The answer is that both John and Peter were too busy with other assignments to set this up in time. We will be back in 2010. At least we were able to compensate with a limited number of NASA internships to continue some of last years projects." .... but I could not find them in this years selected list - any clue?
  • LeopoldS on 20 Mar 10
     
    but in any case, according to the apple guru, Java is a dying technology, so their project might as well ...
  • Joris _ on 21 Mar 10
     
    They participate under the name "The Java Pathfinder Team" (http://babelfish.arc.nasa.gov/trac/jpf/wiki/events/soc2010). It is actually a very useful project for both education and industry (Airbus created a consortium on model checking soft, and there is a lot of research on it) As far as I know, TAS had some plans of using Java onboard spacecrafts, 2 years ago. Not sure the industry is really sensible about Jobs' opinions ;) particularly if there is no better alternative!
Joris _

What the strange persistence of rockets can teach us about innovation. - 5 views

www.slate.com/...all

technology innovation space politic MAD

shared by Joris _ on 04 Feb 11 - No Cached
  • Joris _ on 04 Feb 11
     
    If I could write, this is exactly what I would write about rocket, GO, and so on... :) "we are decadent and tired. But none of the bright young up-and-coming economies seem to be interested in anything besides aping what the United States and the USSR did years ago. We may, in other words, need to look beyond strictly U.S.-centric explanations for such failures of imagination and initiative. ... Those are places we need to go if we are not to end up as the Ottoman Empire of the 21st century, and yet in spite of all of the lip service that is paid to innovation in such areas, it frequently seems as though we are trapped in a collective stasis." "But those who do concern themselves with the formal regulation of "technology" might wish to worry less about possible negative effects of innovation and more about the damage being done to our environment and our prosperity by the mid-20th-century technologies that no sane and responsible person would propose today, but in which we remain trapped by mysterious and ineffable forces."
  • ...4 more comments...
  • Ma Ru on 04 Feb 11
     
    Very interesting, though I'm amused how the author tends to (subconsciously?) shift the blame to non-US dictators :-) Suggestion that in absence of cold war US might have abandoned HB and ICBM programmes is ridiculous.
  • Luís F. Simões on 04 Feb 11
     
    Interesting, this was written by Neal Stephenson ( http://en.wikipedia.org/wiki/Neal_Stephenson#Works ). Great article indeed. The videos of the event from which this arose might be equally interesting: Here Be Dragons: Governing a Technologically Uncertain Future http://newamerica.net/events/2011/here_be_dragons "To employ a commonly used metaphor, our current proficiency in rocket-building is the result of a hill-climbing approach; we started at one place on the technological landscape-which must be considered a random pick, given that it was chosen for dubious reasons by a maniac-and climbed the hill from there, looking for small steps that could be taken to increase the size and efficiency of the device."
  • Joris _ on 04 Feb 11
     
    You know Luis, when I read this quote, I could help thinking about GO, which would be kind of ironic considering the context but not far from what happens in the field :p
  • LeopoldS on 05 Feb 11
     
    Fantastic!!!
  • LeopoldS on 05 Feb 11
     
    Would have been nice if it were historically more accurate and less polemic / superficial
  • pacome delva on 14 Feb 11
     
    mmmh... the wheel is also an old invention... there is an idea behind but this article is not very deepfull, and I really don't think the problem is with innovation and lack of creative young people !!! look at what is done in the financial sector...
Giusi Schiavone

coming back to the Moon - 2 views

www.googlelunarxprize.org/...about-the-prize

shared by Giusi Schiavone on 28 Feb 11 - Cached
  • Giusi Schiavone on 28 Feb 11
     
    The $30 million Google Lunar X PRIZE will be awarded to the first privately funded teams to build robots that successfully land on the lunar surface, explore the Moon by moving at least 500 meters (~1/3 of a mile), and return high definition video and imagery. The Google Lunar X PRIZE expires whenever all prizes are claimed, or at the end of 2015. As of midnight on December 31st, 2010, the team registration for the Google Lunar X PRIZE is closed. No additional applicants will be accepted to join the competition. ...too late
  • LeopoldS on 02 Mar 11
     
    please see the act report on this from a few years ago - its on the wiki - should we maybe make an update analysis? any volunteers? Giusi?
  • Giusi Schiavone on 02 Mar 11
     
    I'll have a look
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