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Ma Ru

A free and realistic space flight simulation program - 4 views

orbit.medphys.ucl.ac.uk/home.php

technology space simulator gaming fun

shared by Ma Ru on 20 Sep 10 - Cached
  • Ma Ru on 20 Sep 10
     
    Have a nice gaming :-)
Dario Izzo

File Compression: New Tool for Life Detection? - 4 views

www.astrobio.net/...on-new-tool-for-life-detection

life AI image compression

shared by Dario Izzo on 21 Sep 10 - No Cached
  • Dario Izzo on 21 Sep 10
     
    As mentioned today during coffee .... we could think to link this to source localization
  • ...3 more comments...
  • Ma Ru on 22 Sep 10
     
    Not sure by what you mean by source localisation, but this using gzip to discern "biological" from "non-biological" images seems to me *very* tricky... I mean, there's a lot of other factors that may affect compressibility of an image than just mere "regularity" of the pattern, and if they haven't controlled for these, this is just bullsh1t... (For instance did they use the same imaging device to take those images? What about lighting conditions and exposure? etc). The apostle of sometimes surprising uses of compression is prof. Shmidhuber from IDSIA...
  • Dario Izzo on 22 Sep 10
     
    I completely agree with you..... still if you have one instrument on board the spacecraft and your picture compressibility is a noisy indicator of some interesting source .... we could try to perform some probabilistic reasoning
  • Juxi Leitner on 24 Sep 10
     
    I think they (IDSIA-Schmidhuber) are planning on putting something about that also inside the Acta Futura paper...
  • Ma Ru on 24 Sep 10
     
    Really, you think they'd target such a low impact factor publication? ;-P
  • Dario Izzo on 26 Sep 10
     
    you will all soon be begging to publish in Acta Futura! We will be bigger than Nature.
santecarloni

APOD: 2005 November 18 - The 37 Cluster - 4 views

antwrp.gsfc.nasa.gov/...ap051118.html

fun science space

shared by santecarloni on 01 Nov 10 - No Cached
  • santecarloni on 01 Nov 10
     
    Should't this be 42?
LeopoldS

Violation of local realism with freedom of choice - PNAS - 4 views

www.pnas.org/...1002780107

science PHY space

shared by LeopoldS on 01 Nov 10 - No Cached
  • LeopoldS on 01 Nov 10
     
    another Zeilinger experiment ...
  • Luzi Bergamin on 02 Nov 10
     
    And what if the freedom-of-choice is corrupted due to yet another hidden variable in past lightcone of the whole experiment that triggers Alice and Bob's choice as well as the pair creation? Then we can design yet another experiment that will have yet another loophole. I guess this is experimentally interesting work, but the introduction rather reads like an article from the "Institut für Grenzgebiete der Psychologie und Psychohygiene"...
Juxi Leitner

Make: Online : Programmable blobs - 4 views

blog.makezine.com/...programmable_blobs.html

technology programmable meta materials

shared by Juxi Leitner on 09 Nov 10 - No Cached
  • Ma Ru on 09 Nov 10
pacome delva

Penrose claims to have glimpsed universe before Big Bang - 0 views

physicsworld.com/...44388

phy cosmology

shared by pacome delva on 22 Nov 10 - No Cached
LeopoldS liked it
  • According to Penrose and Gurzadyan, these circles allow us to "see through" the Big Bang into the aeon that would have existed beforehand. The circles, they say, are the marks left in our aeon by the spherical ripples of gravitational waves that were generated when black holes collided in the previous aeon.
  • Julian Barbour, a visiting professor of physics at the University of Oxford, says that these circles would be "remarkable if real and sensational if they confirm Penrose's theory". They would, he says, "overthrow the standard inflationary picture", which, he adds, has become widely accepted as scientific fact by many cosmologists. But he believes that the result will be "very controversial" and that other researchers will look at the data very critically. He says there are many disputable aspects to the theory
  • pacome delva on 22 Nov 10
     
    hehe, a nice controversy? or completely overinterpreted results...?
  • LeopoldS on 23 Nov 10
     
    what the heck is this? sounds strange to me ... would I understand the original paper?
pacome delva

Information converted to energy - physicsworld.com - 4 views

physicsworld.com/...44385

phy information maxwell_demon

shared by pacome delva on 22 Nov 10 - No Cached
  • By tracking the particle's motion using a video camera and then using image-analysis software to identify when the particle had rotated against the field, the researchers were able to raise the metaphorical barrier behind it by inverting the field's phase. In this way they could gradually raise the potential of the particle even though they had not imparted any energy to it directly.
  • "Nobody thinks of using bits to boil water," he says, "but that would in principle be possible at nanometre scales." And he speculates that molecular processes occurring in nature might already be converting information to energy in some way. "The message is that processes taking place on the nanoscale are completely different from those we are familiar with, and that information is part of that picture."
  • pacome delva on 22 Nov 10
     
    crazy, the Maxwell's demon at work !
  • Nicholas Lan on 23 Nov 10
     
    crazy indeed
santecarloni

the scenic route - 4 views

www.viruscomix.com/page523.html

funny creativity fun

shared by santecarloni on 27 Nov 10 - Cached
  • santecarloni on 27 Nov 10
     
    really true!
  • LeopoldS on 27 Nov 10
     
    page does not load ... :-(
Joris _

Japan probe overshoots Venus, heads toward sun - 0 views

www.washingtonpost.com/...AR2010120701077.html

MAD venus robust

shared by Joris _ on 08 Dec 10 - No Cached
sreejanag liked it
  • A Japanese probe to Venus failed to reach orbit Wednesday and was captured by the sun's gravitational pull
  • Akatsuki's engines did not fire long enough to attain the proper orbiting position
  • may be able to try again when it passes by Venus six years from now.
  • Joris _ on 08 Dec 10
     
    The usefulness of having a robust trajectory :) ... They have to wait 6 more years for another date with Venus ...
  • ...2 more comments...
  • Joris _ on 09 Dec 10
  • LeopoldS on 11 Dec 10
     
    I agree in general but just out of the stomach: is there really an optimised trajectory that would be able to avoid this kind of scenarios when main thrusters don't perform properly? Wouldn't you in any case end up in a sun-orbiting trajectory and have to come back after years??
  • Joris _ on 11 Dec 10
     
    "optimised trajectory" of course not, robust definitely! It was the subject of my paper presented at the AAS (the one in San Diego) "Designing robust interplanetary trajectories subject to one temporary engine failure". The problem here is that they do not have enough fuel for a correction maneuver that would allow to come back to Venus earlier, and break for a VOI. A robust scenario could have alloted the best amount of fuel and time to be able to recover from almost all possible unplanned events. In the paper, I introduce some confidence regions such that I get the robust control for p% chance of mission success in case m% chance of problem with the propulsion system.
  • Dario Izzo on 12 Dec 10
     
    You should run your method on this scenario and see if you could get a trajectory with a shorter come back time using the same spacecraft.... would be a big selling point for a new trajectory design approach
Joris _

Sonic Screwdriver Could Produce Ultrasonic Force Fields To Manipulate Objects | Popular... - 4 views

www.popsci.com/...ipulate-objects-scientists-say

technology

shared by Joris _ on 09 Dec 10 - No Cached
  • terencepf on 10 Dec 10
     
    Dear Santa...
Joris _

The Pioneer Anomaly, a 30-Year-Old Cosmic Mystery, May Be Resolved At Last | Popular Sc... - 0 views

www.popsci.com/pioneeranomaly

MAD phy pioneer

shared by Joris _ on 16 Dec 10 - No Cached
LeopoldS liked it
  • Joris _ on 16 Dec 10
     
    "After decades spent thinking, arguing, hoping, and in the words of Turyshev, "making a career off of it," these scientists' interest in the Pioneer anomaly has, understandably, accumulated psychological baggage; in the case of many of them, a cloud of emotional investment has formed around the core of objective scientific inquiry. And clouds obscure things."
  • Joris _ on 16 Dec 10
     
    165 pages about it!! http://arxiv.org/abs/1001.3686
  • LeopoldS on 20 Dec 10
     
    good old Turyshev ...
LeopoldS

Future Agenda: Welcome - 4 views

www.futureagenda.org/view

fun future

shared by LeopoldS on 22 Dec 10 - No Cached
  • LeopoldS on 22 Dec 10
     
    very nice work based on open foresight ... we should add the space component to each of these trends :-)
LeopoldS

IdeaConnection: Open Innovation success story: Open Innovation Boost to Space Exploration - 4 views

www.ideaconnection.com/...o-Space-Exploration-00257.html

technology innovation open science space

shared by LeopoldS on 22 Feb 11 - No Cached
  • LeopoldS on 22 Feb 11
     
    nice
  • dejanpetkow on 23 Feb 11
     
    Is it a yearly thing?
Joris _

The 2010 Global Innovation 1000: How the Top Innovators Keep Winning - 4 views

www.booz.com/...innovation_1000_2010

technology science innovation

shared by Joris _ on 03 Mar 11 - No Cached
  • Joris _ on 03 Mar 11
     
    Paper Discussion Deck
  • LeopoldS on 05 Mar 11
     
    despite being a consultancy paper, quite interesting ... " the success of these companies is not a matter of how much these companies spend on research and development, but rather how they spend it." could also be translated into: "you need us to tell you how to spend your R&D money" :-)
Isabelle DB

the World Wide Web for robots - 4 views

www.roboearth.org

technology WWW learning AI

shared by Isabelle DB on 10 Mar 11 - No Cached
  • Isabelle DB on 10 Mar 11
     
    Will they need humans anymore?
  • LeopoldS on 12 Mar 11
     
    the coordinators of this FP7 are in Eindhoven ... might be nice to check where they are at one of their next consortium conferences: next one apparently in July but no date given. Guido: could you check?
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