Skip to main content

Home/ Advanced Concepts Team/ Group items tagged ames

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
Eduardo Martin Moraud

Forecasting Brain Science and its impact on technology - 3 views

www.youtube.com/watch

shared by Eduardo Martin Moraud on 19 Oct 09 - Cached
  • Eduardo Martin Moraud on 19 Oct 09
     
    For those sceptics about the use of neuroscience: A 20min talk (by a computer scientist!) about brain science and its use to build intelligent technology
  • Christos Ampatzis on 20 Oct 09
     
    so what does he sell? 22' without saying anything? Just "intelligence is prediction" - great but what are you gonna do mate?
  • Eduardo Martin Moraud on 20 Oct 09
     
    I do not think his intention is to sell anything... Just to make people (from a non neuroscience background) aware that brain science will have an impact on technology. Also: I am a firm believer in that "prediction"defines intelligence, as he states, and that making machines that behave in such a way is the way to go :) (the talk is from 2003 btw :p)
Juxi Leitner

Rogue satellites to be cleared from Earth's orbit by German robots | Science | The Obse... - 1 views

www.guardian.co.uk/...-robots-clear-rogue-satellites

satellites orbital debris security technology

shared by Juxi Leitner on 14 Oct 09 - Cached
  • Their robots will dock with failing satellites to carry out repairs or push them into "graveyard orbits", freeing vital space in geostationary orbit.
  • meant that the German robots will be "ready to be used on any satellite, whether it's designed to be docked or not".
  • Juxi Leitner on 14 Oct 09
     
    I am not sure the military will like this...
Joris _

Global warming: Our best guess is likely wrong - 0 views

www.physorg.com/news166795736.html

global warming climate change model

shared by Joris _ on 15 Jul 09 - Cached
  • theoretical models cannot explain what we observe in the geological record
  • There appears to be something fundamentally wrong
  • something other than carbon dioxide caused much of the heating during the PETM
  • LeopoldS on 15 Jul 09
     
    I find the title of the article misleading at best, but probably plainly wrong since they seem to talk about conditions way back and I am not sure how well our current models have been designed to work in these very different conditions? - but should probably be rather another good reason to put more effort into improving the models!
Friederike Sontag

AMS Policy Statement on Geoengineering the Climate System - 0 views

www.ametsoc.org/...eringclimate_amsstatement.html

geoengineering policy US

shared by Friederike Sontag on 21 Jul 09 - Cached
LeopoldS liked it
  • Therefore, the American Meteorological Society recommends:
  • Enhanced research on the scientific and technological potential for geoengineering
  • the climate system, including research on intended and unintended environmental responses.
  • ...2 more annotations...
  • Coordinated study of historical, ethical, legal, and social implications of geoengineering
  • that integrates international, interdisciplinary, and intergenerational issues and perspectives and includes lessons from past efforts to modify weather and climate. Development and analysis of policy options to promote transparency and international cooperation in exploring geoengineering options along with restrictions on reckless efforts to manipulate the climate system.
  • Friederike Sontag on 21 Jul 09
     
    policy statement regarding research on geoengineerin in the US (in force from July 2009-July 2012)
  • LeopoldS on 21 Jul 09
     
    looking forward to your recommendations how we can get into it quickly :-)
nikolas smyrlakis

The Space Elevator Games - 0 views

www.spaceelevatorgames.org

space elevator nasa ames

shared by nikolas smyrlakis on 15 Jun 09 - Cached
  • nikolas smyrlakis on 15 Jun 09
     
    July 14, 2009 NASA Dryden Flight Research Center, Edwards Air Force Base, Mojave, CA 6 Teams [KCSP, LM, USST, NSS, McGill, U MICH] 1 km vertical raceway, laser-powered vehicles $2,000,000 Total prize purse (two levels)
jmlloren

Splitting Time from Space-New Quantum Theory Topples Einstein's Spacetime - 4 views

www.scientificamerican.com/article.cfm

PHY

shared by jmlloren on 25 Nov 09 - Cached
  • jmlloren on 25 Nov 09
     
    This is the guy of Luzy's joke: "Dear, this is not what it seems. I can explain EVERYTHING!"
  • ...1 more comment...
  • Luzi Bergamin on 25 Nov 09
     
    Horava is a serious string theorist (if there is anything like that...) I like the last comment by Dvali: if the theory can be adjusted in such a way that it becomes indistinguishable from GR then it should be taken seriously. Gosh, am I glad to be among engineers now!!!
  • pacome delva on 26 Nov 09
     
    yeah an interesting theory, definitely worth following. But it is far from being mature, and a lot of work remains before saying that it is viable or not... I posted something on this some time ago (http://www.diigo.com/user/pacome/horava_theory) and proposed to do smthing on it in the idea storm (our new creative game...), which didn't have a lot of success... I like also the idea of matrix gravity (see Matrix general relativity: a new look at old problems, Ivan G Avramidi, CQG 21, 103)
  • LeopoldS on 26 Nov 09
     
    you are among what???
Luís F. Simões

Solar power without solar cells: A hidden magnetic effect of light could make it possible - 2 views

ns.umich.edu/...story.php

NRG solar power

shared by Luís F. Simões on 15 Apr 11 - No Cached
LeopoldS liked it
  • Luís F. Simões on 15 Apr 11
  • LeopoldS on 15 Apr 11
     
    still only a few percent of conversion efficiency but very promising since working at reasonably focussing and unpolarised light; they announce the publication of a first design of such a system .... to be followed!! Duncan: you wanna have a closer look at it?
  • Luzi Bergamin on 18 Apr 11
     
    99% house advertising, 1% scientific results. I think this is still a conservative guess... And I'm sure this "completely new" effect that you don't see when "staring at the equations of motion" (doggone, how I love this USish "I-am-better-than-the-rest-of-the-world" jargon) certainly has been predicted at least 50 years ago by some smart USSR researcher!!
Joris _

A Fusion Thruster for Space Travel - IEEE Spectrum - 4 views

spectrum.ieee.org/...0

Thruster PHY NRG NASA

shared by Joris _ on 29 Jun 11 - No Cached
LeopoldS liked it
  • Now a NASA engineer has come up with a new way to fling satellites through space on mere grams of fuel, tens of times as efficiently as today’s best space probe thrusters.
  • Instead of using deuterium and tritium as the fuel stocks, the new motor extracts energy from boron fuel.
  • Joris _ on 29 Jun 11
     
    "And according to his calculations, improvements in short-pulse laser systems could make this form of thruster more than 40 times as efficient as even the best of today's ionic propulsion systems that push spacecraft around. "
  • LeopoldS on 02 Jul 11
     
    Dejan please have a look at this also ...
  • LeopoldS on 02 Jul 11
     
    while the nuclear reaction seems to be sound at first view, I am not so sure how this would work: "Electromagnetic forces push the target and the alpha particles in the opposite directions, and the particles exit the spacecraft through a nozzle, providing the vehicle's thrust. "
LeopoldS

Greg's Cable Map - 1 views

www.cablemap.info

technology PHY IT

shared by LeopoldS on 15 Jul 11 - Cached
  • LeopoldS on 15 Jul 11
     
    this is the infrastructure that satellites have to compete with ....
  • ...3 more comments...
  • LeopoldS on 15 Jul 11
     
    the largest cable into the Netherlands comes in apparently at Katwijk - we should have super fast internet!!! :-)
  • Ma Ru on 15 Jul 11
     
    You mean: "then why don't we have super fast internet?" :-) If you zoom the map in, it's actually way past Noordwijk. My quess is this could be attached somewhere near the naval radio station area? This remembered me the good old times of bike trips in the dunes, eh...
  • LeopoldS on 16 Jul 11
     
    well, the description says clearly Katwijk; am quite sure that the maps are less accurate than the description ...
  • Ma Ru on 16 Jul 11
     
    I guess you are right... Is ACT already planning a find-and-cut expedition?
  • LeopoldS on 17 Jul 11
     
    now that we have the boat and thanks to Camilla it is still floating after the deluge ....
Thijs Versloot

Real-Time Recognition and Profiling of Home Appliances through a Single Electricity Sensor - 3 views

csserver.ucd.ie/...Secon10_REAR.pdf

Smart home neural networks energy

shared by Thijs Versloot on 22 Oct 14 - No Cached
LeopoldS and anonymous liked it
  • Thijs Versloot on 22 Oct 14
     
    A personal interest of mine that I want to explore a bit more in the future. I just bought a ZigBee electricity monitor and I am wondering whether from the signal of the mains one could detect (reliably) the oven turning on, lights, etc. Probably requires Neural Network training. The idea would be to make a simple device which basically saves you money by telling you how much electricity you are wasting. Then again, its probably already done by Google...
  • ...3 more comments...
  • LeopoldS on 24 Oct 14
     
    nice project!
  • Thijs Versloot on 28 Oct 14
     
    For those interested, this is what/where I ordered.. http://openenergymonitor.org/emon/
  • Thijs Versloot on 10 Nov 14
     
    Update two.. RF chip is faulty and tonight I have to solder a new chip into place.. That's open-source hardware for you!
  • jcunha on 09 Dec 14
  • Thijs Versloot on 10 Dec 14
     
    haha, yep, that's it... but we can do better than that right! :)
anonymous

Nasa validates 'impossible' space drive (Wired UK) - 3 views

www.wired.co.uk/...lidates-impossible-space-drive

PHY space nasa propulsion emdrive

shared by anonymous on 31 Jul 14 - No Cached
  • anonymous on 31 Jul 14
     
    NASA validates the EmDrive (http://emdrive.com/) technology for converting electrical energy into thrust. (from the website: "Thrust is produced by the amplification of the radiation pressure of an electromagnetic wave propagated through a resonant waveguide assembly.")
  • ...3 more comments...
  • LeopoldS on 01 Aug 14
     
    I would be very very skeptic on this results and am actually ready to take bets that they are victims of something else than "new physics" ... some measurement error e.g.
  • anonymous on 02 Aug 14
     
    Assuming that this system is feasible, and taking the results of Chinese team (Thrust of 720 mN http://www.wired.co.uk/news/archive/2013-02/06/emdrive-and-cold-fusion), I wonder whether this would allow for some actual trajectory maneuvers (and to which degree). If so, can we simulate some possible trajectories, e.g. compare the current solutions to this one ? For example, Shawyer (original author) claims that this system would be capable of stabilizing ISS without need for refueling. Other article on the same topic: http://www.theverge.com/2014/8/1/5959637/nasa-cannae-drive-tests-have-promising-results
  • Thijs Versloot on 04 Aug 14
     
    To be exact, the chinese reported 720mN and the americans found ~50microN. The first one I simply do not believe and the second one seems more credible, yet it has to be said that measuring such low thrust levels on a thrust-stand is very difficult and prone to measurement errors. @Krzys, the thrust level of 720mN is within the same range of other electric propulsion systems which are considered - and even used in some cases - for station keeping, also for the ISS actually (for which there are also ideas to use a high power system delivering several Newtons of thrust). Then on the idea, I do not rule out that an interaction between the EM waves and 'vacuum' could be possible, however if this would be true then this surely would be detectable in any particle accelerator as it would produce background events/noise. The energy densities involved and the conversion to thrust via some form of interaction with the vacuum surely could not provide thrusts in the range reported by the chinese, nor the americans. The laws of momentum conservation would still need to apply. Finally, 'quantum vacuum virtual plasma'.. really?
  • annaheffernan on 04 Aug 14
     
    I have to join the skeptics on this one ...
  • Marcus Maertens on 09 Aug 14
Thijs Versloot

Hypersonic Successor to Legendary SR-71 Blackbird Spy Plane Unveiled - 1 views

www.wired.com/...lockheed-martin-sr-72

hypersonic flight propulsion

shared by Thijs Versloot on 08 Aug 14 - No Cached
  • Thijs Versloot on 08 Aug 14
     
    he new SR-72 will use a turbine-based combined cycle (TBCC) that will employ the turbine engine at lower speeds, and use a scramjet at higher speeds. A scramjet engine is designed to operate at hypersonic velocities by compressing the air through a carefully designed inlet, but needs to be traveling supersonic before it is practical to begin with. So far research projects from NASA, the Air Force and other Pentagon entities have not been able to solve the problem of transitioning from the subsonic flight regime, through hypersonic flight with a single aircraft. Same problem as Reaction Engines is trying to solve, so I am not sure whether they actually cracked it. In any case, nice pictures. Not sure why the exhaust color is purple in color. Its not running on Argon I believe.
  • dejanpetkow on 11 Aug 14
     
    Weird article. Intermediate thruster stage (Ramjet) is missing. Scramjet has supersonic combustion and a normal turbine delivers subsonic flows. Even with afterburner - the Scramjet inlet would decelerate the flow down to subsonic velocity with "normal" subsonic combustion. The only thing I can imagine is that the Scramjet stage is bi-functional and covers both, subsonic and supersonic combustion. But the article doesn't say anything about it.
Paul N

Microsoft Hololens, Occulus rift killer? - 1 views

www.youtube.com/watch

FUN

shared by Paul N on 27 Jan 15 - No Cached
  • Paul N on 27 Jan 15
     
    Probably old news by now, but this thing sounds so awesome it warrants an entry
  • Thijs Versloot on 28 Jan 15
     
    Looks like fun! Note though, I'm always slightly annoyed when people use holography only because it sounds cool. because clearly this is not a hologram! Definition: a three-dimensional image formed by the interference of light beams from a laser or other coherent light source. I am sure this is not what is happening in these goggles.
  • Paul N on 28 Jan 15
     
    I think they suspect that "hologram" would sell better than "yet-another-augmented-reality-goggle"
Ma Ru

Nice job opportunity at ESA - 7 views

www.esa.int/...ESA-VN-HO-2014-012.pdf

space ESA jobs fun

shared by Ma Ru on 23 Jun 14 - No Cached
  • Ma Ru on 23 Jun 14
     
    Anyone's going to apply? Just so that I know my competition... ;-)
  • Dario Izzo on 25 Jun 14
     
    damn!! they look for someone with the "greatest personal integrity" -- I am out
  • Paul N on 30 Jun 14
     
    I'm game :)) I'll pay for everyone's beers with my limitless paycheck after I get it!
jcunha

'Superman memory crystal' that could store 360TB of data forever | ExtremeTech - 0 views

www.extremetech.com/...that-could-store-360tb-of-data

technology 5D PHY memory TB

shared by jcunha on 22 Feb 16 - No Cached
  • jcunha on 22 Feb 16
     
    A new so called 5D data storage that could potentially survive for billions of years. The research consists of nanostructured glass that can record digital data in five dimensions using femtosecond laser writing.
  • ...2 more comments...
  • jcunha on 22 Feb 16
     
    Very scarce scientific info available.. I'm very curious to see a bit more in future. From https://spie.org/PWL/conferencedetails/laser-micro-nanoprocessing I made a back of envelop calc: for 20 nm spaced, each laser spot in 5D encryption encodes 3 bits (it seemed to me) written in 3 planes, to obtain the claimed 360TB disk one needs very roughly 6000mm2, which does not complain with the dimensions shown in video. Only with larger number of planes (order of magnitude higher) it could be.. Also, at current commercial trends NAND Flash and HDD allow for 1000 Gb/in2. This means a 360 TB could hypothetically fit in 1800mm2.
  • Alexander Wittig on 22 Feb 16
     
    I had the same issue with the numbers when I saw the announcement a few days back (https://www.southampton.ac.uk/news/2016/02/5d-data-storage-update.page). It doesn't seem to add up. Plus, the examples they show are super low amounts of data (the bible probably fits on a few 1.44 MB floppy disk). As for the comparison with NAND and HDD, I think the main argument for their crystal is that it is supposedly more durable. HDDs are chronically bad at long term storage, and also NAND as far as I know needs to be refreshed frequently.
  • jcunha on 23 Feb 16
     
    Yes Alex, indeed, the durability is the point I think they highlight and focus on (besides the fact the abstract says something as the extrapolated decay time being comparable to the age of the Universe..). Indeed memories face problems with retention time. Most of the disks retain the information up to 10 years. When enterprises want to store data for longer times than this they use... yeah, magnetic tapes :-). Check a interesting article about magnetic tape market revival here http://www.information-age.com/technology/data-centre-and-it-infrastructure/123458854/rise-fall-and-re-rise-magnetic-tape I compared for fun, to have one idea of what we were talking about. I am also very curious so see the writing and reading times in this new memory :)
  • joergmueller on 23 Feb 16
     
    But how can glass store the information so long? Glass is not even solid?!
Ingmar Getzner

Controversial Quantum Machine Bought by NASA and Google Shows Promise - 4 views

www.technologyreview.com/...-quantum-computer-really-works

AI Quantum_Computing

shared by Ingmar Getzner on 08 Dec 15 - No Cached
jcunha liked it
  • Thijs Versloot on 10 Dec 15
     
    I am having less and less faith in the Dwave machine, but nonetheless, maybe we should have a look at our future encryption techniques...
  • LeopoldS on 10 Dec 15
     
    why less and less ... ?
johannessimon81

Scientists engineer shortcut for photosynthetic glitch, boost crop growth by 40 percent - 3 views

phys.org/...otosynthetic-glitch-boost.html

BIO science

shared by johannessimon81 on 04 Jan 19 - No Cached
  • johannessimon81 on 04 Jan 19
     
    Did we just solve overpopulation and climate change? With 40% more efficient crops we could easily sustain 10+ billion people on Earth. And 40% more efficient plants would absorb much more CO2 than we are emitting (currently: artificial CO2 emission ~29 GT/y, photosynthesis CO2 capture through plants ~450 GT/y) I am usually very worried about the risks of climate change, but this could be a real game changer!
  • Marcus Maertens on 07 Jan 19
     
    I love the car animation!
Athanasia Nikolaou

Citizen science: Eyewire discovers 6 new types of neurons - 5 views

Here is a the publication in Cell Journal (>29,000 coauthors): https://doi.org/10.1016/j.cell.2018.04.040 ...and I am a coauthor, because I played it while in the ACT! Lol

science BIO image recognition crowdsourcing

started by Athanasia Nikolaou on 23 May 18 no follow-up yet
« First ‹ Previous 101 - 120 of 123 Next ›
Showing 20▼ items per page