Skip to main content

Home/ Advanced Concepts Team/ Group items matching "act" in title, tags, annotations or url

Group items matching
in title, tags, annotations or url

Sort By: Relevance | Date Filter: All | Bookmarks | Topics Simple Middle
LeopoldS

NASA - Star Wars Meets UPS as Robonaut Packed for Space - 2 views

www.nasa.gov/...robonautpacking.html

technology ISS robotics

shared by LeopoldS on 15 Aug 10 - Cached
  • LeopoldS on 15 Aug 10
     
    couldn't find his legs ... but they might not be needed anyway on the ISS ....
  • andreiaries on 16 Aug 10
     
    Cool. Since ESA is always said to be inspired by NASA projects, can the ACT look at it from a different perpective? What about sending humans to the ISS without legs? Think of the mass and volume it would save. It would also improve robot-human interACTion. Robots would no longer feel inferior. I'm sure most people would give up limb to go to space.
Ma Ru

The quantum mechanics of time travel through post-selected teleportation - 3 views

arxiv.org/1007.2615

PHY time travel science

shared by Ma Ru on 26 Jul 10 - Cached
  • Ma Ru on 26 Jul 10
     
    Giving the title, I think the comment is not necessary...
  • pacome delva on 27 Jul 10
     
    Haha, nice article : One of the best-known versions of non-general relativistic quantum versions of time travel comes from Wheeler, as described by Feynman in his Nobel Prize lecture [16]: 'I received a telephone call one day at the graduate college at Princeton from Professor Wheeler, in which he said, "Feynman, I know why all electrons have the same charge and the same mass." "Why?" "Because, they are all the same electron!" And, then he explained on the telephone, "Suppose that the world lines which we were ordinarily considering before in time and space - instead of only going up in time were a tremendous knot, and then, when we cut through the knot, by the plane corresponding to a fixed time, we would see many, many world lines and that would represent many electrons, except for one thing. If in one section this is an ordinary electron world line, in the section in which it reversed itself and is coming back from the future we have the wrong sign to the proper time - to the proper four velocities - and that's equivalent to changing the sign of the charge, and, therefore, that part of a path would act like a positron."
Joris _

Airbus Concept Has Weird Wings, Morphing Seats | Autopia | Wired.com - 6 views

www.wired.com/...airbus-concept-plane-2050

MAD technology concept

shared by Joris _ on 21 Jul 10 - Cached
LeopoldS liked it
  • it reflects what experts in aircraft materials, aerodynamics, cabin design and engines came up with after considering what air transport might look like in 2050
  • Seems safe to say there are some within Airbus who truly are allowed to imagine something beyond normal aircraft interiors.
  • Joris _ on 21 Jul 10
     
    what a ACT's exercise should look like...
  • ...1 more comment...
  • LeopoldS on 21 Jul 10
     
    honestly, if this is all they can imagine for 2050 then this is quite boring .... "Here we are stretching our imagination and thinking beyond our usual boundaries," they are probably not having enough of imagination yet ....
  • Joris _ on 21 Jul 10
     
    Maybe, you should propose this exercise to the team. You'll see there is not much imagination, unless, you consider imagination equals craziness (bullshit things ... and the too common blah blah in the act). I think this concept is an imaginative credible concept. "anything we might ever see" explains it well.
  • pacome delva on 21 Jul 10
     
    well, the article is not very detailed so it can be only "du vent" ! did they actually try if such an airplane can fly ??? what about the engine ??? i find the solar impulse (see post below) much more eco-friendly !!! I agree with Leopold that it's quite boring and stays in the mainstream of the production. I'm sure we can do much better !!! What about some really useful things like pills against the flight sickness, and some really good food in the plane ? haha not soon to happen with all the cost reduction. The future of air transport will be a plane without seats, stewards and perhaps even without pilot !!!
LeopoldS

Short-term meditation induces white matter changes in the anterior cingulate - PNAS - 3 views

www.pnas.org/...1011043107

bio INF science BMI

shared by LeopoldS on 24 Aug 10 - Cached
  • LeopoldS on 24 Aug 10
     
    one more try to get you interested in this ... seems that it is slowly but surely moving into the domain of serious science ...
  • Ma Ru on 25 Aug 10
     
    Why don't you try this out? 10 minutes group meditation before every ACT meeting... Should be fun!
  • Luzi Bergamin on 25 Aug 10
     
    Great, just great!! The conclusion seems to be "Thus IBMT could provide a means for improving self-regulation and perhaps reducing or preventing various mental disorders." Why all this neuro-bio-nonsense?? Wasn't this conclusion known before just using good old classic psychology and similar? Again one of these studies that thinks to provide new evidence just because they made a boring brain scan...
Christos Ampatzis

Danish rocketeers ready to launch British dummy - 2 views

www.bbc.co.uk/...-rocketeers-are-no-dummi.shtml

space

shared by Christos Ampatzis on 01 Sep 10 - Cached
  • Christos Ampatzis on 01 Sep 10
     
    ACT RFs should be able to go on mission in one of those once a year
nikolas smyrlakis

The Space Game - 3 views

games.slashdot.org/...h-Design-Your-Route-To-Jupiter

space game

shared by nikolas smyrlakis on 05 Oct 10 - No Cached
  • nikolas smyrlakis on 05 Oct 10
     
    already on slashdot with a lot of comments. Amazing work, I have no words ! I will just start playing
  • nikolas smyrlakis on 05 Oct 10
     
    best comment, act style : If we assume teleporters, it wouldn't even take a second. Therefore my completely unrealistic solution is much better than your completely unrealistic
Ma Ru

Centuries-old Spanish tradition in danger - 3 views

edition.cnn.com/...index.html

BIO spain fun

shared by Ma Ru on 17 Oct 10 - No Cached
  • Ma Ru on 17 Oct 10
     
    It starts to look more and more seriously... and ACT still haven't done anything to save it!
  • Luzi Bergamin on 18 Oct 10
     
    Siesta championship!! At least it's less dangerous than the Finnish sauna championship...
Juxi Leitner

Slashdot Science Story | Calculating Environmental Damage From Space Tourism Rockets - 3 views

science.slashdot.org/...age-From-Space-Tourism-Rockets

technology green environment danger rockets

shared by Juxi Leitner on 02 Nov 10 - No Cached
  • LeopoldS on 02 Nov 10
     
    Cynthia - please have a look ... can we check the OoM?
  • Juxi Leitner on 05 Nov 10
     
    http://www.nature.com/news/2010/101022/full/news.2010.558.html hmm should be the ACT in Nature, no? ;)
  • Ma Ru on 05 Nov 10
     
    Yeeesss :) So the "non-commercial" rockets do not emit soot? And how many "non-commercial" launches per year are there in comparison to the commercial ones? Finally commercial space-flight seems more realisable than ever, and "non-commercial" guys will do everything to prevent situation in which they have to compete on an open market... Coming years should be very interesting...
Joris _

American Institute of Aeronautics and Astronautics - New Horizons Challenge - 5 views

www.aiaa.org/content.cfm

shared by Joris _ on 16 Nov 10 - No Cached
Juxi Leitner liked it
  • Joris _ on 16 Nov 10
     
    the ACT should participate, a least someone in it, ...
  • LeopoldS on 16 Nov 10
     
    seems as if they are lacking ideas ?? :-) and honestly: "The Grand Prize Winner will be announced 6 January and will receive $500 plus a one year, on-line subscription to the AIAA Journal of their choice. Two runner-up winners will each receive $250 and a one year, on-line subscription to the AIAA Journal of their choice." ... :-)
duncan barker

YouTube - BigDog Overview (Updated March 2010) - 5 views

www.youtube.com/watch

shared by duncan barker on 17 Nov 10 - No Cached
  • duncan barker on 17 Nov 10
     
    initially disgusting.........but amazing
  • LeopoldS on 17 Nov 10
     
    this was probably already 5 times on our diigo group ... and before this a few times on the predecessor of diigo ...
  • Ma Ru on 17 Nov 10
     
    Maybe it's a sign that every ACT member should ride one of these to get to work?
Ma Ru

Yet another issue to take into account when you want to travel at c - 1 views

www.newscientist.com/...lls-especially-warp-speed.html

PHY interstellar travel human spaceflight speed of light

shared by Ma Ru on 19 Feb 10 - Cached
  • Ma Ru on 19 Feb 10
     
    While my attitude to articles about interstellar travel is generally sceptical, this one seems to raise quite an interesting point... Physicists?
  • ...1 more comment...
  • pacome delva on 19 Feb 10
     
    mmm, I think that if we manage to travel at 99.999998 per cent the speed of light, we'll have the technology to deviate these atoms ! one way could be a super strong magnetic field, or a super laser that would act as an ice breaker with the radiation pressure (the good thing is that light always travel at the speed of light, even if you are at 99.999998 per cent the speed of light)
  • Francesco Biscani on 19 Feb 10
     
    Also, remember never to dereference null pointers.
  • Ma Ru on 19 Feb 10
     
    True, it's almost like installing accelerometers upside down...
pacome delva

Power Law Explains Insurgent Violence - 1 views

sciencenow.sciencemag.org/...1

war power_law

shared by pacome delva on 18 Dec 09 - Cached
  • To try to explain the mechanism behind these patterns, the team borrowed a simple computer model from economics. The model treated all insurgencies like a marketplace--groups of people constantly deciding whether to act. Rather than coordinating, the groups simply watch the news. The size of the carnage reported at any given time determines the probability that a group of a given size will strike next. Like clockwork, the attacks over the course of the conflict--from the smallest to the most deadly--have the same distribution.
pacome delva

Philosophers' Imprint - 5 views

quod.lib.umich.edu/...text-idx

philosophy phy math

shared by pacome delva on 18 Jan 10 - Cached
Nicholas Lan liked it
  • pacome delva on 18 Jan 10
     
    An interesting (free) journal on philosophy, with even some article with mathematics and physics !
  • Luzi Bergamin on 18 Jan 10
     
    Reading the titles somehow reminds me of the most important webpage of the ACT: the Advanced Concepts Generator :-)
  • pacome delva on 18 Jan 10
     
    have you seen the 2 articles on canonical GR ...!
andreiaries

BBC News - Row over 'torture' on French TV - 1 views

news.bbc.co.uk/...8573755.stm

social experiment

shared by andreiaries on 18 Mar 10 - Cached
  • andreiaries on 18 Mar 10
     
    "Row over 'torture' on French TV "
  • andreiaries on 18 Mar 10
     
    Suggestion for new format of ACT meetings. What would make this experiment scientifically relevant and not just a show?
Ma Ru

ESA highlights online games as key future technology - 3 views

www.esa.int/...SEMHGBFKZ6G_index_0.html

technology inf online gaming education

shared by Ma Ru on 23 Mar 10 - Cached
  • Ma Ru on 23 Mar 10
     
    Did you know that? (Obviously you should, as it's GSP)
  • andreiaries on 24 Mar 10
     
    I was actually at the mid-term review in Sweden last year. Also played the game for a few minutes. The final presentation is next week in case anyone in the act is interested.
Ma Ru

Another Obligatory Part of the ACT Dress Code - 6 views

www.esa.int/...SEMWUYSRJHG_index_0.html

technology space cycling jeans fun

shared by Ma Ru on 22 Dec 10 - No Cached
  • Ma Ru on 22 Dec 10
     
    Prices in UK oscillate between 200 and 300 GBP
duncan barker

Video - The Great Global Warming Swindle - 2 views

video.google.com/videoplay

shared by duncan barker on 06 Jan 11 - Cached
  • LeopoldS on 07 Jan 11
     
    joke posting??
  • ...1 more comment...
  • duncan barker on 07 Jan 11
     
    No. People SHOULD look at alternative views to be more informed. Criticism of areas of science is a GOOD thing, it helps science to grow. Unfortunately, when it comes to this issue, people, including ACT members have a closed mind and do not want to listen to alternative view points. But I am sure many people in the group have seen it before. Have you?
  • duncan barker on 07 Jan 11
     
    This is why i always post crazy stuff .... its disruptive. ..... although sometimes its a joke ;)
  • LeopoldS on 07 Jan 11
     
    why not this one then? http://www.venganza.org/
Luís F. Simões

The Fantastical Promise of Reversible Computing  - Technology Review - 2 views

www.technologyreview.com/...26308

INF reversible logic computing chip electronics quantum cellular_automata

shared by Luís F. Simões on 25 Jan 11 - No Cached
  • Reversible logic could cut the energy wasted by computers to zero. But significant challenges lie ahead.
  • By some estimates the difference between the amount of energy required to carry out a computation and the amount that today's computers actually use, is some eight orders of magnitude. Clearly, there is room for improvement.
  • There are one or two caveats, of course. The first is that nobody has succeeded in building a properly reversible logic gate so this work is entirely theoretical. But there are a number of computing schemes that have the potential to work like this. Thapliyal and Ranganathan point in particular to the emerging technology of quantum cellular automata and show how their approach might be applied.
  • ...1 more annotation...
  • Ref: arxiv.org/abs/1101.4222: Reversible Logic Based Concurrent Error Detection Methodology For Emerging Nanocircuits
  • Dario Izzo on 26 Jan 11
     
    We did look at making computation powers more efficient from the bio perspective (efficiency of computations in brain). This paper was actually the base for our discussion on a new approsach to computing http://atlas.estec.esa.int/actwiki/images/6/68/Sarpeshkar.pdf and led to several act internal studies
  • Luís F. Simões on 26 Jan 11
     
    here is the paper I told you about, on the computational power of analog computing: http://dx.doi.org/10.1016/0304-3975(95)00248-0 you can also get it here: http://www.santafe.edu/media/workingpapers/95-09-079.pdf
Ma Ru

Flea's jumping ability explained - 3 views

news.bbc.co.uk/...9391478.stm

BIO PHY science flea

shared by Ma Ru on 11 Feb 11 - No Cached
LeopoldS liked it
  • Ma Ru on 11 Feb 11
     
    Very ACT-ish...
santecarloni

Breakthrough Propulsion Physics - 7 views

www.grc.nasa.gov/bpp

propulsion physics space

shared by santecarloni on 26 Jan 11 - Cached
  • santecarloni on 26 Jan 11
     
    The competition is open....
  • Luzi Bergamin on 26 Jan 11
     
    And what does one win in the end? Yet another unfeasible concept to be archived somewhere in a journal? Look at "Millis hypothetical drives"... Give me a break, for sure!!
  • Dario Izzo on 26 Jan 11
     
    I like the sentence "16 peer-reviewed journal articles, and an award-winning website (Warp-When), all for a total investment of less than $1.6M". This gives 100.000 dollars per peer-reviewed paper (we neglect the award-winning web-site under the assumption that is the easy part....). With these number the ACT in 2010 cashed 1.4 millions only in research papers making it an obvious good investment for the European Space Agency also in austerity times!!!
« First ‹ Previous 141 - 160 of 200 Next › Last »
Showing 20▼ items per page