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Thijs Versloot

Combined nanoplasmonic and optical resonators produces laser-like light emission - 0 views

www.sciencedaily.com/...140826121139.htm

optics laser amplification plasmonic

shared by Thijs Versloot on 27 Aug 14 - No Cached
annaheffernan liked it
  • Thijs Versloot on 27 Aug 14
     
    "We have made optical systems at the microscopic scale that amplify light and produce ultra-narrowband spectral output," explained J. Gary Eden, a professor of electrical and computer engineering (ECE) at Illinois. "These new optical amplifiers are well-suited for routing optical power on a chip containing both electronic and optical components.
Thijs Versloot

Linked Open Earth Observation Data for Precision Farming - 1 views

www.linkedeodata.eu

EO farming applications

shared by Thijs Versloot on 10 May 14 - No Cached
  • Thijs Versloot on 10 May 14
     
    Lots of Earth Observation data has become available at no charge in Europe and the US recently and there is a strong push for more open EO data. With precision farming, advanced agriculture using GPS, satellite observations and tractors with on-board computers, the farming process is performed as accurately and efficiently as possible. This is achieved by combining data from earth observations with other geospatial sources such as cadastral data, data on the quality of the soil, vegetation and protected areas. This enables the farmer to find the optimal trade-off in maximizing his yield with minimal use of fertilizers and pesticides while respecting environmental protection.
Thijs Versloot

Active Metasurfaces for Advanced Wavefront Engineering #Harvard - 4 views

phys.org/...ces-grant-merge-classical.html

technology optics quantum metamaterials

shared by Thijs Versloot on 02 May 14 - No Cached
  • Thijs Versloot on 02 May 14
     
    Metasurfaces have been made, but the problem is that they usually are static and for quantum optic applications the question is how to make a rapidly configurable metasurface. for this Harvard has initiated a multidisciplinary team that involves theoretical physics, metamaterials, nanophotonic circuitry, quantum devices, plasmonics, nanofabrication, and computational modeling
  • Athanasia Nikolaou on 02 May 14
     
    Reading "wavefront engineering" in the title I thought it had to do with wave manipulation in the sea. Nothing to do though. As I read further in this article, Harvard thrives in forming multidisciplinarity groups. Their practice is to call the best team in each expertise they need to merge. Not one researcher from each discipline, but teams of experienced professors and a series of graduate students. Maybe we could discuss it in the retreat!
annaheffernan

Graphene drum could store quantum information - 4 views

physicsworld.com/...ould-store-quantum-information

PHY science technology quantum

shared by annaheffernan on 06 Oct 14 - No Cached
  • annaheffernan on 06 Oct 14
     
    Devices made from resonating graphene "drums" could be used as microwave amplifiers and memory chips in quantum computers. So say researchers at the Kavli Institute of Nanoscience at the Delft University of Technology in the Netherlands, who are the first to demonstrate optomechanical coupling between a mechanical resonator and a superconducting microwave cavity.
Wiktor Piotrowski

Revolutionary Silicon Chip Brings Us Closer To Light-Speed Computer Technology | IFLSci... - 1 views

www.iflscience.com/...-silicon-chip-makes-light-work

technology PHY

shared by Wiktor Piotrowski on 19 May 15 - No Cached
LeopoldS liked it
  • LeopoldS on 22 May 15
     
    They created a 50 times smaller optical beam splitter, which is certainly impressive in itself. Question remains how much does this actually bring us closer to optical chips?1% 50% 20% ?
Thijs Versloot

Airbus Group Creators: Airbus Protospace - 1 views

www.airbusgroup.com/...Shooting-for-the-moon.html

shared by Thijs Versloot on 08 Jun 15 - No Cached
  • Thijs Versloot on 08 Jun 15
     
    Marc Stephens "ProtoSpace embodies agility," says Vincent Loubière. "We can move from concept to demonstrator quickly." The 'agility' method is modelled on proven successes in the computer industry but the ProtoSpace team also works with automotive and communications blue-chips, as well as start-ups whose creations could have applications in aerospace. Airbus's ACT :)
Thijs Versloot

The physics of flying snakes - 1 views

arxiv.org/1309.2969

bio science

shared by Thijs Versloot on 01 Nov 13 - No Cached
  • Thijs Versloot on 01 Nov 13
     
    The researchers have created two-dimensional computer models of the flying snakes, but they've also done real-world simulations - using 3D printed components in water tunnels. Both show that snake-shaped objects would get a special aerodynamic pop should they tilt their bodies at 35 degrees as they drop from tree branches.
H H

Math Experts Split the Check - 0 views

mathwithbaddrawings.com/...e-math-experts-split-the-check

shared by H H on 23 Aug 13 - No Cached
  • H H on 23 Aug 13
     
    Engineer : Remember to tip 18%, everybody. Mathematician : Is that 18% of the pre-tax total, or of the total with tax? Physicist : You know, it's simpler if we assume the system doesn't have tax. Computer Scientist : But it does have tax.
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/.
Alexander Wittig

WorldWide Telescope - 2 views

worldwidetelescope.org

space technology

shared by Alexander Wittig on 06 Jul 15 - Cached
  • Alexander Wittig on 06 Jul 15
     
    Worldwide Telescope enables your computer to function as a virtual telescope, bringing together imagery from the best telescopes in the world. I managed to crash it twice in 20 minutes, but otherwise quite nice. Maybe Ingmar can add the GTOC solution in it ;)
  • Thijs Versloot on 07 Jul 15
     
    Wow, it also supports the Oculus! I see a new application to install :)
Alexander Wittig

Neuronal Networks: Computers paint like van Gogh - 1 views

www.spiegel.de/...maelde-aussehen-a-1051084.html

AI

shared by Alexander Wittig on 03 Sep 15 - No Cached
  • Alexander Wittig on 03 Sep 15
     
    A neuronal network trained to paint the scene of a given photograph in the style of Kandinsky, van Gogh, or Munch. Their results look quite impressive. Unfortunately the article is in German, but the English paper (with plenty of pictures) is here: http://arxiv.org/pdf/1508.06576v2.pdf Malen wie Kandinsky, wie van Gogh, wie Munch nur auf Basis einer Fotovorlage? Natürlich gibt es begabte Kunstfälscher, die das können. Jetzt aber gelingt es auch Computern, und zwar auf höchst eindrucksvolle Weise. Drei Forscher von der Universität Tübingen haben es geschafft, einem sogenannten künstlichen neuronalen Netzwerk das Malen beizubringen.
  • Luís F. Simões on 03 Sep 15
     
    Impressive stuff indeed. Paper came out one week ago. Multiple independent implementations have popped out since then: * https://github.com/Lasagne/Recipes/blob/master/examples/styletransfer/Art%20Style%20Transfer.ipynb * https://github.com/jcjohnson/neural-style * https://github.com/kaishengtai/neuralart
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.
LeopoldS

OpenStack: An Open Source Cloud Project Emerges - 1 views

gigaom.com/openstack

cloud computing IT

shared by LeopoldS on 19 Jul 10 - Cached
  • LeopoldS on 19 Jul 10
     
    Francesco, check this one out ... seems like coming at the right time for us ... Leopold
  • Francesco Biscani on 19 Jul 10
     
    Sure looks interesting, hopefully it will gain some traction. Bonus point it uses Python heavily :) First versions are coming out in Sept/Oct, according to their roadmap, we could start playing with it as soon as it gets out.
Francesco Biscani

The World's Most Unusual Outsourcing Destination - PCWorld Business Center - 5 views

www.pcworld.com/...l_outsourcing_destination.html

shared by Francesco Biscani on 15 Jun 10 - Cached
LeopoldS liked it
  • Francesco Biscani on 15 Jun 10
     
    As discussed during lunchtime...
  • andreiaries on 15 Jun 10
     
    "Development work that requires an Internet connection is transferred across the border to China." What are programmers doing 'while the code is compiling'? Play table tennis?
  • LeopoldS on 15 Jun 10
     
    fantastic ... I particularly like: "Kim Jong Il, the de-facto leader of the country, declared people who couldn't use computers to be one of the three fools of the 21st century. (The others, he said, are smokers and those ignorant of music.)"
Joris _

YouTube Video Editor - 0 views

googlesystem.blogspot.com/...youtube-video-editor.html

INF tools

shared by Joris _ on 18 Jun 10 - Cached
  • Joris _ on 18 Jun 10
     
    nice application of cloud computing
Loretta Latronico Poulain

Agent-based computer models could anticipate future economic crisis - 1 views

www.anl.gov/...DIS081114.html

INF

shared by Loretta Latronico Poulain on 10 Jun 10 - Cached
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  • pacome delva on 10 Jun 10
     
    "The Illinois Commerce Commission wanted to make sure that if they deregulated the power market, individual producers of electricity would not be able to manipulate the market during times of high demand by withholding capacity or charging excessive rates. The Argonne model found that during certain times of heavy load such a situation could emerge, which led to the recommendation that independent monitors maintain some oversight of the power market." Interesting this study on power grids !
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