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Thijs Versloot

Dolphin inspired radar #biomimicry - 1 views

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    The device, like dolphins, sends out two pulses in quick succession to allow for a targeted search for semiconductor devices, cancelling any background "noise",
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    and it sends out two pulses of opposite polarity, in succession, such that a semiconductor changes the negative to a positive one, amplifying the returning signal. Very interesting. Maybe we can combine different frequencies for identifying a single variable in earth observation. We already use more that one frequencies but for identifying one variable each.
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    Could it be used to measure ocean acidification? I found a study that links sound wave propagation with ocean acidity. Maybe we are able to do such measurement from space even?

    "Their paper, "Unanticipated consequences of ocean acidification: A noisier ocean at lower pH," published last week in the journal Geophysical Research Letters, found that fossil fuels are turning up the ocean's volume. Since the beginning of the Industrial Revolution, the overall pH of the world's oceans has dropped by about 0.1 units, with more of the changes concentrated closer to the poles. The authors found that sound absorption has decreased by 15 percent in parts of the North Atlantic and by 10 percent throughout the Atlantic and Pacific"
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    The last time I asked an oceanographer for the use of acoustic waves, she said it is still a bit problematic method to take into account its data, but we were referring to measuring ocean circulation. It may be more conclusive for PH measurements, though. The truth is that there is a whole underwater network with pulse emmitters/receivers covering the North Atlantic basin, remnant infrastructure for spying activities in the WW2 and in the cold war, that stays unexploited. We should look more into this idea
LeopoldS

In Silicon Valley, Socks Make the Tech Entrepreneur - NYTimes.com - 2 views

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    Funny article .... Reminds me a bit of Luzi :-)

    And look at this phrase: am I in good or bad company ?

    "Sergey Brin, a founder of Google, rarely leaves home without his Vibram FiveFingers nylon shoes."
    In the article it is mentioned as a sign of particularly bad taste :-)
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    But there should be a second article on sandals! And finally one on the synthesis: socks with sandals... :-)
Juxi Leitner

YouTube - ATHLETE Rover Busts a Move: A Dancing Robot - 1 views

Juxi Leitner

How I became a Foursquare cyberstalker | Technology | The Guardian - 0 views

  • Foursquare is now being widely touted as the app which will, after years of anticipation and prediction, mark the beginning of "life as a game" computing. Whatever you do, wherever you go, you will be scoring points, earning "medals", and be in, at the very least, social competition with other users around you.
  • Privacy seems to be very low down their priorities. In theory, if every user knows the risks, this is fine. But they just don't. It's being targeted at 18 to 25-year-olds. Facebook was forced in the end to change its default privacy settings due to public concerns. Foursquare should do the same. Some people are even checking in when they're at home. Think of the implications. It's crazy
  • Recruitment is a form of stalking, I suppose. But I can now see the negative implications of Foursquare in the real world.
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  • Ten days ago Foursquare reached the two-million-users landmark, just three months after it had reached the one-million mark. A week earlier, the company received $20m in venture capital from a who's who of Silicon Valley luminaries. It appears the trajectory for Foursquare is only upwards. But as the critical mass of Foursquare users swells and intensifies over the coming months and years, the concerns over privacy are likely to magnify. In June, Webroot, a Denver-based internet security firm, surveyed 1,645 users of "geo-location-ready mobile devices", including 624 in the UK: 29% said they shared their location with people other than their friends; 31% said they accepted a friend request from a stranger; and, yet, 55% still said they were worried about their loss of privacy.
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    anybody here using Foursquare already?
    Location is supposed to be "the future" (this time)
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    this is worse than having a mobile ... !
Juxi Leitner

NASA - Centennial Challenges - 1 views

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    New Centennial Challenges Announced!
Juxi Leitner

Asteroid Response System in Place (Complete With U.S. Military Eye Patch) - 1 views

  • However, the US air force, which funded the development of the telescope, requires that software automatically black out a swathe of pixels to hide the trajectories of passing satellites.
Juxi Leitner

Astrobotic announces expanded opportunities to send payloads to the Moon : Astrobotic T... - 1 views

  • The remaining 229 pounds are available for $700,000 per pound, plus a $250,000 fee per payload to cover the engineering costs of integrating it into either the expedition’s lander or its solar-powered robot.
Juxi Leitner

YouTube - The latest version of the LittleDog Robot - 3 views

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    whoa!!!
Juxi Leitner

Open Source Satellite Initiative | machine project - 3 views

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    All the satellite-related systems (except for the rocket to launch it) are DIY programs -- designed so that regular people may also have the chance of developing and eventually launching their own.
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    The book is actually funny to read ... but this is not serious! Is it ?
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    I was saying that mainly because of some flaws - the piggy-pack installation, no dedicated stage, the limited control, ...
    It is so far very funny, but once he can fill all the gaps, it should be an excellent initiative - although careful about the debris if anyone has its own ;p
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    his quote: "when art becomes practical, we call it technology;
    when technology becomes useless, we call it art" ...
    this is probably the later one ....
Juxi Leitner

Academics and Research: Virginia Tech Students Build Humanoid | Robotics Trends - 0 views

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    CHARLI is the first untethered, autonomous, full-sized, walking, humanoid robot with four moving limbs and a head, built in the United States. His two long legs and arms can move and gesture thanks to a combination of pulleys, springs, carbon fiber rods, and actuators. CHARLI soon will be able to talk as well.
Juxi Leitner

DARPA Looking for Partner On Wireless Spacecraft Demo | SpaceNews.com - 1 views

  • DARPA will entertain proposals from all qualified sources, be they government, commercial, national or international, the posting said. Responses to the request for information are due May 17.
Juxi Leitner

A Cyborg Space Race - 1 views

  • There is more discussion in the space community on how to alter entire planets to suit humans - a process called "terraforming" - than there is on changing man to suit space.
  • making the machines our "avatars" for space exploration
  • Perhaps a brain implant linking us to our robots would be the next step in space exploration, greatly reducing communication time across the vast expanse of space
Juxi Leitner

Draper MIT Students Test Lunar Hopper with Eyes on Prize | SpaceNews.com - 0 views

  • The testing of the second-generation lunar hopper is being carried out under the supervision of engineers from the nearby Draper Laboratory with an eye toward competing for the Google Lunar X Prize in 2012.
  • Although planetary rovers are not new, the hopper concept could add a new dimension to robotic planetary exploration, one that Tuohy said could inspire a new generation of engineers, technologists and scientists.
Juxi Leitner

Networked Networks Are Prone to Epic Failure | Wired Science | Wired.com - 1 views

  • The interconnections fueled a cascading effect, with the failures coursing back and forth. A damaged node in the first network would pull down nodes in the second, which crashed nodes in the first, which brought down more in the second, and so on. And when they looked at data from a 2003 Italian power blackout, in which the electrical grid was linked to the computer network that controlled it, the patterns matched their models’ math.
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    that would be an interesting "Systems of Systems" study for once ...
Juxi Leitner

Overview of Advanced Concepts for Space Access Part 1 - 1 views

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    did just find it and flew over it, will read it when i am back, but might be of interest for the new RF maybe
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