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Thijs Versloot

Black metals - 3 views

www.sciencedaily.com/...130730132620.htm

technology nano energy

shared by Thijs Versloot on 31 Jul 13 - No Cached
  • Thijs Versloot on 31 Jul 13
     
    Using random nanostructuring highly absorptive materials were made which are of interest for photovoltaic or thermovoltaic applications
  • ...1 more comment...
  • Marcus Maertens on 31 Jul 13
     
    Yes, Black Metal is very good - pure hate! \m/
  • Luís F. Simões on 31 Jul 13
     
    Yes! Black Metal... definitely something the ACT should look into
  • dejanpetkow on 02 Aug 13
     
    Black Metal...sounds like something for the ACT Magic Cards. But apart from that - is it possible to shift the PV type of absorption into gamma ray spectrum?
LeopoldS

Physicists Discover Geometry Underlying Particle Physics | Simons Foundation - 7 views

www.simonsfoundation.org/...t-the-heart-of-quantum-physics

PHY geometry

shared by LeopoldS on 19 Sep 13 - No Cached
  • LeopoldS on 19 Sep 13
     
    Looks fantastic!
  • ...2 more comments...
  • Dario Izzo on 21 Sep 13
     
    Luzi ... we need your critical insight!!
  • Thijs Versloot on 23 Sep 13
     
    Definitely elegant.. although if true, it does put two of my closest friends out of a job...
  • johannessimon81 on 24 Sep 13
     
    Sounds like a great tool for calculation and may provide some deeper understanding. But: I think their comments about space and time are misleading. Often you can ignore space and time when you just want the probability of an event (and it makes your calculations easier) but especially in the low-energy regime an event is clearly localized.
  • LeopoldS on 05 Oct 13
     
    where is Luzi? where is Anna? where is Sante? when you need them?
johannessimon81

Listen to a Volcano Scream Just Before It Erupts - 0 views

www.wired.com/...redoubt-seismic-screams

science

shared by johannessimon81 on 01 Oct 13 - No Cached
  • johannessimon81 on 01 Oct 13
     
    It actually does make a very weird sound...
annaheffernan

Solar panels perform better when listening to music - 2 views

www3.imperial.ac.uk/...news_6-11-2013-11-35-3

shared by annaheffernan on 02 Dec 13 - No Cached
  • Marcus Maertens on 02 Dec 13
     
    Turn on Metal and they will boost their efficiency by 666%!
  • LeopoldS on 03 Dec 13
     
    the title is at best misleading ... they add piezoelectrics into PV cells ... "manufacturing a piezoelectric material, zinc oxide nanorods, into the solar cells increased their efficiency when sound waves were played"
Zivile Dalikaite

Amaze project aims to take 3D printing 'into metal age' - 1 views

www.bbc.co.uk/...science-environment-24528306

technology

shared by Zivile Dalikaite on 16 Oct 13 - No Cached
  • Zivile Dalikaite on 16 Oct 13
     
    The European Space Agency has unveiled plans to "take 3D printing into the metal age" by building parts for jets, spacecraft and fusion projects.
  • Marcus Maertens on 16 Oct 13
     
    Metal Age sounds like some epic good time...
Ma Ru

Probabilistic fluidic modular construction - 17 views

Looks cool... in simulation. And even there it seems to work terribly slow (note how much they have to speed it up).

started by Guido de Croon on 14 Mar 11 2 follow-ups, last by Ma Ru on 15 Mar 11
johannessimon81

Google combines skycrane, VTOL and lifting wing to make drone deliveries - 6 views

www.wired.com/...ffort-to-build-delivery-drones

technology drone_delivery VTOL skycrane FUN soundtrack

shared by johannessimon81 on 30 Aug 14 - No Cached
annaheffernan liked it
  • johannessimon81 on 30 Aug 14
     
    Nice video featuring the technology. Plus it comes with a good soundtrack! Google's project wing uses a lifting wing concept (more fuel efficient than normal airplane layouts and MUCH more efficient than quadrocopters) but it equips the plane with engines strong enough to hover in a nose up position, allowing vertical landing and takeoff. For the delivery of packages the drone does not even need to land - it can lower them on a wire - much like the skycrane concept used to deliver the Curiosity rover on Mars. Not sure if the skycrane is really necessary but it is certainly cool. Anyways, the video is great for its soundtrack alone! ;-P
  • ...4 more comments...
  • Paul N on 31 Aug 14
     
    could we just use genetic algorithms to evolve these shapes and layouts? :P
  • Ma Ru on 31 Aug 14
     
    > Not sure if the skycrane is really necessary but it is certainly cool. I think apart from coolness using a skycrane helps keep the rotating knives away from the recipient...
  • Thijs Versloot on 01 Sep 14
     
    Honest question, are we ever going to see this in practice? I mean besides some niche application somewhere, isn't it fundamentally flawed or do I need to keep my window opened on the 3rd floor without a balcony when I ordered something from DX? Its pretty cool yes, but practical?
  • Guido de Croon on 02 Sep 14
     
    Package delivery is indeed more complicated than it may seem at first sight, although solutions are possible for instance by restricting delivery to distribution centers. What we really need of course is some really efficient and robust AI to navigate without any problems in urban areas : ) The hybrid is interesting since it combines the advantage of a Vertical Takeoff and Landing (and hover), and a wing for more efficient forward flight. Challenges lie in the control of the vehicle under any angle and all that this entails also for higher levels of control. Our lab has first used this concept a few years ago for the DARPA UAVforge challenge, and we had two hybrids in our entry last year for the IMAV 2013 (for some shaky images: https://www.youtube.com/watch?v=Z7XgRK7pMoU ).
  • Thijs Versloot on 04 Sep 14
     
    Fair enough, but even if you consider advanced/robust/efficient AI, why would you use a drone? Do we envision hundreds of drones above our heads in the street instead of UPS vans, or postmen, considering delivers letters might be more easily achievable. I am not so sure if personal delivery will take this route. On the other hand, if the system would work smoothly, I can image that I'm send a mail with the question whether I'm home (or they might know already from my personal GPS tracker) and then notify me that they are launching my DVD and it will come crashing into my door in 5min.
  • Paul N on 08 Sep 14
     
    I'm more curios how they're planning to keep people from stealing the drones. I could do with a drone army myself and having cheap amazon or google drones flying about sounds like a decent source.
Isabelle Dicaire

Hey, it's weird up here - there must be an earthquake in the atmosphere - GeoSpace - AG... - 4 views

blogs.agu.org/...n-earthquake-in-the-atmosphere

shared by Isabelle Dicaire on 02 May 14 - No Cached
  • Isabelle Dicaire on 02 May 14
     
    CNES research to detect warning signs of earthquakes in the ionosphere. Jaxa is also interested in conducting such studies. To my opinion it's worth taken a closer look at what they are doing!! 
  • Isabelle Dicaire on 02 May 14
     
    Update: it seems we are already looking into it, I found this recent call from ESRIN: IONOSPHERIC SOUNDING FOR IDENTIFICATION OF PRE-SEISMIC ACTIVITY (RE-ISSUE) ESA Open Invitation To Tender AO7548 Open Date: 08/07/2013 Closing Date: 09/09/2013
Thijs Versloot

Acoustic tractor beam - 1 views

phys.org/...2014-05-acoustic-tractor.html

technology acoustic scifi PHY

shared by Thijs Versloot on 08 May 14 - No Cached
annaheffernan liked it
  • Thijs Versloot on 08 May 14
     
    Some cheating involved
  • johannessimon81 on 09 May 14
     
    Reminds me a bit of optical tweezers - although the principle seems somewhat different. Could the optical tweezers principle be applied through sound? http://en.wikipedia.org/wiki/Optical_tweezers
Athanasia Nikolaou

Do dolphins use nonlinear mathematics? - 1 views

phys.org/...ins-nonlinear-mathematics.html

BIO PHY sound nonlinear

shared by Athanasia Nikolaou on 14 Oct 14 - No Cached
  • Athanasia Nikolaou on 14 Oct 14
     
    For fun. "Dolphins are only the second most intelligent form of life on Earth"
Thijs Versloot

Need to analyse vast amounts of data? Listen to it! (NASA) - 2 views

www.nasa.gov/...nasa-scientists-listen-to-data

data analysis

shared by Thijs Versloot on 05 Sep 14 - No Cached
  • Thijs Versloot on 05 Sep 14
     
    Robert Alexander spends parts of his day listening to a soft white noise, similar to water falling on the outside of a house during a rainstorm. Every once in a while, he hears an anomalous sound and marks the corresponding time in the audio file.
  • Athanasia Nikolaou on 05 Sep 14
     
    I want this guy's job!
johannessimon81

IBM Speech Recognition, 1986 - 0 views

www.wired.com/...bms-speech-savvy-computer-1986

AI technology

shared by johannessimon81 on 09 Nov 13 - No Cached
  • johannessimon81 on 09 Nov 13
     
    Interesting historical perspective. Progress since the late '80 really seems to be fairly slow. ?: Do we need to wait for the singularity until speech recognition works without flaws?
  • ...1 more comment...
  • LeopoldS on 09 Nov 13
     
    funny - tried just yesterday the one built in on mavericks: sending one email took three times as long at least as typing it And now my speech PowerPoint Funny, trade trust yesterday they're built in speech recognition in Mavericks sending one e-mail to at least three times a talk as long as typing it. Well this was actually quite okay and relatively fast cheers nice evening
  • johannessimon81 on 13 Nov 13
     
    "I thought I would give it a try on my android sexy seems to work pretty well and I'm speaking more less at normal speed" Actually I was speaking as fast as I could because it was for the google search input - if you make a pause it will think you finished your input and start the query. Also you might notice that Android thinks it is "android sexy" - this was meant to be "on my Android. THIS seems to work...". Still it is not too bad - maybe in a year or two they have it working. Of course it might also be that I just use the word "sexy" randomly... :-\
  • Paul N on 13 Nov 13
     
    The problem is that we don't yet understand how speech in humans actually works. As long as we merely build either inference or statistical language models we'll never get perfect speech recognition. A lot of recognition in humans has a predictive/expectational basis to it that stems from our understanding of higher lvl concepts and context awareness. Sadly I suspect that as long as machines remain unembodied in their perceptual abilities their ability to either properly recognize sounds/speech or objects and other features will never reach perfection.
Alexander Wittig

Picture This: NVIDIA GPUs Sort Through Tens of Millions of Flickr Photos - 2 views

blogs.nvidia.com/...flickr

AI

shared by Alexander Wittig on 21 Jul 15 - No Cached
LeopoldS liked it
  • Alexander Wittig on 21 Jul 15
     
    Strange and exotic cityscapes. Desolate wilderness areas. Dogs that look like wookies. Flickr, one of the world's largest photo sharing services, sees it all. And, now, Flickr's image recognition technology can categorize more than 11 billion photos like these. And it does it automatically. It's called "Magic View." Magical deep learning! Buzzword attack!
  • ...4 more comments...
  • LeopoldS on 21 Jul 15
     
    and here comes my standard question: how can we use this for space? fast detection of natural disasters onboard?
  • Alexander Wittig on 22 Jul 15
     
    Even on ground. You could for example teach it what nuclear reactors or missiles or other weapons you don't want look like on satellite pictures and automatically scan the world for them (basically replacing intelligence analysts).
  • Alexander Wittig on 23 Jul 15
     
    In fact, I think this could make a nice ACT project: counting seals from satellite imagery is an actual (and quite recent) thing: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0092613 In this publication they did it manually from a GeoEye 1 b/w image, which sounds quite tedious. Maybe one can train one of those image recognition algorithms to do it automatically. Or maybe it's a bit easier to count larger things, like elephants (also a thing).
  • jcunha on 23 Jul 15
     
    In HiPEAC (High Performance, embedded architecture and computation) conference I attended in the beginning of this year there was a big trend of CUDA GPU vs FPGA for hardware accelerated image processing. Most of it orbitting around discussing who was faster and cheaper with people from NVIDIA in one side and people from Xilinx and Intel in the other. I remember of talking with an IBM scientist working on hardware accelerated data processing working together with the Radio telescope institute in Netherlands about the solution where they working on (GPU CUDA). I gathered that NVIDIA GPU suits best in applications that somehow do not rely in hardware, having the advantage of being programmed in a 'easy' way accessible to a scientist. FPGA's are highly reliable components with the advantage of being available in radhard versions, but requiring specific knowledge of physical circuit design and tailored 'harsh' programming languages. I don't know what is the level of rad hardness in NVIDIA's GPUs... Therefore FPGAs are indeed the standard choice for image processing in space missions (a talk with the microelectronics department guys could expand on this), whereas GPUs are currently used in some ground based (radio astronomy or other types of telescopes). I think that on for a specific purpose as the one you mentioned, this FPGA vs GPU should be assessed first before going further.
  • Paul N on 29 Jul 15
     
    You're forgetting power usage. GPUs need 1000 hamster wheels worth of power while FPGAs can run on a potato. Since space applications are highly power limited, putting any kind of GPU monster in orbit or on a rover is failed idea from the start. Also in FPGAs if a gate burns out from radiation you can just reprogram around it. Looking for seals offline in high res images is indeed definitely a GPU task.... for now.
  • jcunha on 31 Jul 15
     
    The discussion of how to make FPGA hardware acceleration solutions easier to use for the 'layman' is starting btw http://reconfigurablecomputing4themasses.net/.
Luís F. Simões

Encryption's holy grail is getting closer, one way or another | ZDNet - 0 views

www.zdnet.com/...ting-closer-one-way-or-another

INF cryptography

shared by Luís F. Simões on 06 Jul 15 - No Cached
  • Working with encrypted data without decrypting it first sounds too good to be true, but it's becoming possible.
  • Luís F. Simões on 06 Jul 15
     
    an update on homomorphic encryption research and applications
Alexander Wittig

PQCRYPTO ICT-645622 - 0 views

pqcrypto.eu.org/press.html

Math Cryptography

shared by Alexander Wittig on 11 Sep 15 - No Cached
  • Alexander Wittig on 11 Sep 15
     
    Horizon2020 project on post quantum cryptography just released their first draft of recommendations for quantum computer safe encryption algorithms. No big surprise with the symmetric algorithms (what's used today is fundamentally sound), but the asymmetric public-key methods will be interesting.
Thijs Versloot

Personal Thermal Management by Metallic Nanowire-Coated Textile - 2 views

pubs.acs.org/...nl5036572

thermal management silver nanotechnology

shared by Thijs Versloot on 12 Jan 15 - No Cached
annaheffernan, Paul N, and jcunha liked it
  • Thijs Versloot on 12 Jan 15
     
    By wearing clothes that have been dip-coated in a silver nanowire (AgNW) solution that is highly radiation-insulating, a person may stay so warm in the winter that they can greatly reduce or even eliminate their need for heating their home. With as extra bonus: Besides providing high levels of passive insulation, AgNW-coated clothing can also provide Joule heating if connected to an electricity source, such as a battery. The researchers demonstrated that as little as 0.9 V can safely raise clothing temperature to 38 °C, which is 1 °C higher than the human body temperature of 37 °C. How about that for personal comfort during the cold winter months
  • ...1 more comment...
  • jcunha on 13 Jan 15
     
    These applications seem more and more promising. However I wonder about the toxicity aspects of wearing this stuff and apparently some research is starting to be developed to assess that, see http://www.particleandfibretoxicology.com/content/11/1/52 showing results of pulmonary toxicity of AgNW
  • LeopoldS on 17 Jan 15
     
    sounds almost like the asbestos story re-started :-)
  • jcunha on 09 Apr 15
     
    Found an European project that takes care of the environmental, health and safety aspects of nanomaterials http://phys.org/news/2015-04-unleash-full-potential-nanomaterials.html
pacome delva

Neural Networks Designed to 'See' are Quite Good at 'Hearing' As Well - 2 views

www.popsci.com/...ee-are-quite-good-hearing-well

ia neural_networks

shared by pacome delva on 08 Jun 10 - Cached
  • Neural networks -- collections of artificial neurons or nodes set up to behave like the neurons in the brain -- can be trained to carry out a variety of tasks, often having something to do with pattern or sequence recognition. As such, they have shown great promise in image recognition systems. Now, research coming out of the University of Hong Kong has shown that neural networks can hear as well as see. A neural network there has learned the features of sound, classifying songs into specific genres with 87 percent accuracy.
  • Similar networks based on auditory cortexes have been rewired for vision, so it would appear these kinds of neural networks are quite flexible in their functions. As such, it seems they could potentially be applied to all sorts of perceptual tasks in artificial intelligence systems, the possibilities of which have only begun to be explored.
Juxi Leitner

Fabbaloo - Fabbaloo Blog - Sintering the Moon - 0 views

fabbaloo.com/...sintering-the-moon.html

moon construction technology space printing rapid manufacturing

shared by Juxi Leitner on 22 Jul 10 - Cached
  • So let's recap here: ubiquitous uniformly-powdery lunar soil can be very efficiently fused using microwaves. That sounds very similar to technologies used in 3D printing,
Nina Nadine Ridder

Smart grids - The IET - 0 views

www.theiet.org/...smartgrids.cfm

smart_grids sustainable_energy talk

shared by Nina Nadine Ridder on 25 Aug 10 - Cached
  • Nina Nadine Ridder on 25 Aug 10
     
    talk about European Technology Platform SmartGrids in Paris on the 7th Sep, 19h
  • Nina Nadine Ridder on 25 Aug 10
     
    in case somebody is in Paris on the 7th Sep. - sounds quite interesting
Joris _

American Institute of Aeronautics and Astronautics - Space and the Biological Economy - 0 views

www.aiaa.org/content.cfm

BIO MAD space science

shared by Joris _ on 11 Oct 10 - No Cached
  • the U.S. space program has a robust life science program that is diligently working to innovate new approaches, research and technologies in the fields of biotechnology and bio-nanotechnology science, which are providing new solutions for old problems – including food security, medical needs and energy needs
  • more money be allocated to develop environmentally sound and energy efficient engine programs for commercial and private aviation
  • waste water program
  • ...3 more annotations...
  • we lack fundamental knowledge about the entire effect of the photosynthesis system on food growth, and that space-based research could provide vital clues to scientists on how to streamline the process to spur more efficient food growth
  • From the start of the space age until 2010 only around 500 people have journeyed into space, but with the advent of private space travel in the next 24 months another 500 people are expected to go into space
  • Wagner indentified prize systems that award monetary prizes to companies or individuals as an effective way to spur innovation and creativity, and urged the Congressional staffers present to consider creating more prize systems to stimulate needed innovation
  • Joris _ on 11 Oct 10
     
    a bunch of ideas, iinitiatives, and good points about upcoming changes in space ...
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