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pacome delva

You Are Now Free to Move About the Insect - ScienceNOW - 1 views

news.sciencemag.org/...-now-free-to-move-about-t.html

bio flies optic_flow

shared by pacome delva on 24 Aug 10 - Cached
  • Researchers thought that flies chose their altitude based on optic flow, a phenomenon familiar to anyone who has ridden an airplane.
  • The team's observations, published online today in Current Biology, suggest that flies base their cruising altitude on horizontal edges and landmarks—such as table surfaces or tree tops—and not on how fast the ground is moving beneath them. The edge-tracking strategy may enable flies to keep tabs on possible landing spots.
  • This may be the general principle" for all flying insects, he says.
ESA ACT

Escaping fruit flies - 0 views

www.current-biology.com/...abstract

BIO paper flying

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    A paper on fruit flies and why it is so difficult to kill them. Watch the high speed movies!!!
ESA ACT

Stupid flies live longer - 0 views

www.blackwell-synergy.com/...j.1558-5646.2008.00376.x

paper bio neuroscience

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    Flies that learn a task better die earlier. They say its the increased brain use that wears them out...
pacome delva

Physics - Fruit flies swim through air - 1 views

physics.aps.org/...PhysRevLett.106.178103

bio insect_wings flies

shared by pacome delva on 27 Apr 11 - No Cached
LeopoldS liked it
  • A new experiment reported in Physical Review Letters shows that—contrary to popular wisdom—paddling can be as effective in air as it is in water. This could imply that insects evolved their flight capability from some earlier swimming trait.
  • Using high-speed video cameras to track wing motion, the team observed certain cases where the flies paddled their wings forward and backward. To confirm that this was indeed drag-based motion, the team plugged their wing data into an “insect flight simulator” and found that they could reproduce the fly’s overall movement. The authors constructed a simple model of paddling, which seems to support the theory that insect wings evolved in water.
Tom Gheysens

Four-winged robot flies like a jellyfish - tech - 25 November 2013 - New Scientist - 2 views

www.newscientist.com/...ot-flies-like-a-jellyfish.html

technology science PHY bio

shared by Tom Gheysens on 27 Nov 13 - No Cached
  • Paul N on 28 Nov 13
     
    This sort of reminds me of that Festo robot thing. Except this one was more of a baloon type model: http://www.youtube.com/watch?v=OxVf9QY_TFs
Paul N

Volocopter VC200, E-volo's 18-Rotor Electric VTOL 'Green' Aircraft, Flies Its Maiden Fl... - 2 views

www.crazyengineers.com/...-flies-its-maiden-flight.71819

technology

shared by Paul N on 26 Nov 13 - No Cached
  • Paul N on 26 Nov 13
     
    The drone derived craze takes on new life. Still not too bad for electric.
Tobias Seidl

Blowflies Get Virtual Reality in Flight Simulator | Wired Science | Wired.com - 0 views

www.wired.com/...flysim

BIO EMD fly

shared by Tobias Seidl on 04 Aug 09 - Cached
  • Tobias Seidl on 04 Aug 09
     
    A short overview on cool experiments with flies.
ESA ACT

PLoS ONE: Order in Spontaneous Behavior - 0 views

www.plosone.org/...fetchArticle.action

BIO swarm

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    Free will in (stupid) fruit flies - that will make swarm behaviour even more difficult...
Joris _

Video: Seagull Robot Takes Off And Flies On Its Own, Just Like the Real Thing | Popular... - 5 views

www.popsci.com/...akes-and-flies-just-real-thing

robot technology innovation

shared by Joris _ on 28 Mar 11 - No Cached
LeopoldS liked it
  • Joris _ on 28 Mar 11
     
    Awesome, they managed. (this is a different deal as the micro ones )
  • ...3 more comments...
  • pacome delva on 29 Mar 11
     
    haha, just what they need in holland ;) anyway this is impressive !
  • LeopoldS on 31 Mar 11
     
    really nice - must not be that easy to control, correct?
  • Joris _ on 03 Apr 11
     
    when we tried (http://cas.ensmp.fr/~petit/site-oiseau-np/main.htm good old time :) ) the kinematic and mechanics were the big issues.
  • LeopoldS on 04 Apr 11
     
    this looks like a very nice project back in 2005 ...
  • Ma Ru on 05 Apr 11
     
    Does it also attack people to capture their fish & chips like those beasts we have here in St. Ives?
fichbio

Medscape Log In - 1 views

www.medscape.com/...554795_1

flies biology medicine

shared by fichbio on 21 Oct 16 - No Cached
  • fichbio on 21 Oct 16
     
    Larval Therapy known over centuries
LeopoldS

Flies Evade Looming Targets by Executing Rapid Visually Directed Banked Turns - 4 views

www.sciencemag.org/...172

shared by LeopoldS on 14 Apr 14 - No Cached
  • LeopoldS on 14 Apr 14
     
    any idea how their brain manages this ?
  • ...1 more comment...
  • Paul N on 15 Apr 14
     
    the loop might just be in the nervous system and not make it to the brain at all.
  • Robert Musters on 16 Apr 14
  • Thijs Versloot on 16 Apr 14
     
    On this note, there is the stunningly optimised flight path of the Tiger beetle http://www.sciencedaily.com/releases/2014/04/140415133815.htm
Nina Nadine Ridder

Surprising similarity in fly and mouse motion vision - 2 views

medicalxpress.com/...arity-mouse-motion-vision.html

BIO science evolution biomimetics vision

shared by Nina Nadine Ridder on 30 Jul 15 - No Cached
  • Nina Nadine Ridder on 30 Jul 15
     
    Loosely related to an old ACT project on optical flow (if I remember correctly but even if not still an interesting read I think): "At first glance, the eyes of mammals and those of insects do not seem to have much in common. However, a comparison of the neural circuits for detecting motion shows surprising parallels between flies and mice. Scientists have learned a lot about the visual perception of both animals in recent years."
LeopoldS

Hycopter Drone Flies for 4 Hours via Hydrogen Power - Robotics Trends - 2 views

www.roboticstrends.com/...for_4_hours_via_hydrogen_power

fuel cell hydrogen gadget drone

shared by LeopoldS on 22 May 15 - No Cached
Paul N liked it
  • LeopoldS on 22 May 15
     
    finally a consumer application for fuel cells?
Giusi Schiavone

Why flies can drink and drink - 1 views

www.sciencenews.org/...Why_flies_can_drink_and_drink

cyborg insect

shared by Giusi Schiavone on 25 Oct 10 - No Cached
  • Giusi Schiavone on 25 Oct 10
     
    Engineers could adapt the insect plumbing to create tiny drug delivery systems
LeopoldS

NASA - NASA Mission Successfully Flies By Comet Hartley 2 - 1 views

www.nasa.gov/...epoxi20101104.html

space science asteroids comets

shared by LeopoldS on 05 Nov 10 - No Cached
  • LeopoldS on 05 Nov 10
     
    nice new image!
Dario Izzo

Probabilistic Logic Allows Computer Chip to Run Faster - 3 views

www.azonano.com/news.asp

INF MAD probabilistic computing AI

shared by Dario Izzo on 07 Dec 09 - Cached
  • Dario Izzo on 07 Dec 09
     
    Francesco pointed out this research one year ago, we dropped it as noone was really considering it ... but in space a low CPU power consumption is crucial!! Maybe we should look back into this?
  • ...6 more comments...
  • Ma Ru on 07 Dec 09
     
    Q1: For the time being, for what purposes computers are mainly used on-board?
  • Dario Izzo on 07 Dec 09
     
    for navigation, control, data handling and so on .... why?
  • Ma Ru on 07 Dec 09
     
    Well, because the point is to identify an application in which such computers would do the job... That could be either an existing application which can be done sufficiently well by such computers or a completely new application which is not already there for instance because of some power consumption constraints... Q2 would be then: for which of these purposes strict determinism of the results is not crucial? As the answer to this may not be obvious, a potential study could address this very issue. For instance one can consider on-board navigation systems with limited accuracy... I may be talking bullshit now, but perhaps in some applications it doesn't matter whether a satellite flies on the exact route but +/-10km to the left/right? ...and so on for the other systems. Another thing is understanding what exactly this probabilistic computing is, and what can be achieved using it (like the result is probabilistic but falls within a defined range of precision), etc. Did they build a complete chip or at least a sub-circiut, or still only logic gates...
  • Dario Izzo on 07 Dec 09
     
    Satellites use old CPUs also because with the trend of going for higher power modern CPUs are not very convenient from a system design point of view (TBC)... as a consequence the constraints put on on-board algorithms can be demanding. I agree with you that double precision might just not be necessary for a number of applications (navigation also), but I guess we are not talking about 10km as an absolute value, rather to a relative error that can be tolerated at level of (say) 10^-6. All in all you are right a first study should assess what application this would be useful at all.. and at what precision / power levels
  • Joris _ on 07 Dec 09
     
    The interest of this can be a high fault tolerance for some math operations, ... which would have for effect to simplify the job of coders! I don't think this is a good idea regarding power consumption for CPU (strictly speaking). The reason we use old chip is just a matter of qualification for space, not power. For instance a LEON Sparc (e.g. use on some platform for ESA) consumes something like 5mW/MHz so it is definitely not were an engineer will look for some power saving considering a usual 10-15kW spacecraft
  • Dario Izzo on 07 Dec 09
     
    What about speed then? Seven time faster could allow some real time navigation at higher speed (e.g. velocity of a terminal guidance for an asteroid impactor is limited to 10 km/s ... would a higher velocity be possible with faster processors?) Another issue is the radiation tolerance of the technology ... if the PCMOS are more tolerant to radiation they could get more easily space qualified.....
  • Joris _ on 08 Dec 09
     
    I don't remember what is the speed factor, but I guess this might do it! Although, I remember when using an IMU that you cannot have the data above a given rate (e.g. 20Hz even though the ADC samples the sensor at a little faster rate), so somehow it is not just the CPU that must be re-thought. When I say qualification I also imply the "hardened" phase.
  • Francesco Biscani on 08 Dec 09
     
    I don't know if the (promised) one-order-of-magnitude improvements in power efficiency and performance are enough to justify looking into this. For once, it is not clear to me what embracing this technology would mean from an engineering point of view: does this technology need an entirely new software/hardware stack? If that were the case, in my opinion any potential benefit would be nullified. Also, is it realistic to build an entire self-sufficient chip on this technology? While the precision of floating point computations may be degraded and still be useful, how does all this play with integer arithmetic? Keep in mind that, e.g., in the Linux kernel code floating-point calculations are not even allowed/available... It is probably possible to integrate an "accelerated" low-accuracy floating-point unit together with a traditional CPU, but then again you have more implementation overhead creeping in. Finally, recent processors by Intel (e.g., the Atom) and especially ARM boast really low power-consumption levels, at the same time offering performance-boosting features such as multi-core and vectorization capabilities. Don't such efforts have more potential, if anything because of economical/industrial inertia?
pacome delva

The Spiky Penis Gets the Girl - 1 views

sciencenow.sciencemag.org/...3

flies sexuality

shared by pacome delva on 07 Jan 10 - Cached
  • the genital spines give an advantage before insemination by fastening the genitalia together like Velcro fasteners.
  • pacome delva on 07 Jan 10
     
    Interesting...
  • Juxi Leitner on 07 Jan 10
     
    "But there was no direct way to test this. Enter laser beams." ... LOL
pacome delva

Fruit Fly Aerial Maneuver Explained - 1 views

focus.aps.org/st13

bio biomimicry fruit_fly

shared by pacome delva on 12 Apr 10 - Cached
LeopoldS liked it
  • Insects can execute flying feats more impressive than fighter jets, and a team of researchers has now learned the trick behind one of them. They used high speed video cameras and a new 3D reconstruction technique to show how fruit flies execute their acrobatic turns. As they report in the 9 April Physical Review Letters, despite the complex wing motions, a fly can execute quick pirouettes by adjusting just a single parameter that controls the difference between the way its left and right wings oscillate. The results may be relevant for engineers designing flight control strategies for tiny robotic insects for search-and-rescue and surveillance.
ESA ACT

Flies' eyes could enhance robot vision - 0 views

www.physorg.com/news129545593.html

BIO biomimicry insect

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    Tobias - of interest?
Nicholas Lan

Real-Life Jetpack Flies at Futuristic Conference - 5 views

www.livescience.com/5688-jetpack-flight-video.html

technology fun

shared by Nicholas Lan on 20 May 14 - No Cached
  • Nicholas Lan on 20 May 14
     
    frickin awesome
  • Ma Ru on 23 May 14
     
    finally!!!
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