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Kevin de Groote

Gephi, an open source graph visualization and manipulation software - 5 views

gephi.org

shared by Kevin de Groote on 05 Jun 12 - Cached
LeopoldS and Joris _ liked it
  • Kevin de Groote on 05 Jun 12
     
    Gephi is an interactive visualization and exploration platform for all kinds of networks and complex systems, dynamic and hierarchical graphs. Runs on Windows, Linux and Mac OS X. Gephi is open-source and free. Learn More on Gephi Platform " Gephi 0.8.1-beta has been released! Discover a new Timeline, dynamic ranking and weighted community detection.
Christos Ampatzis

Rapid Inversion: Running Animals and Robots Swing like a Pendulum under Ledges - 3 views

www.plosone.org/...journal.pone.0038003

BIO AI technology

shared by Christos Ampatzis on 08 Jun 12 - No Cached
LeopoldS liked it
  • Christos Ampatzis on 08 Jun 12
     
    Cool - reminds me of the cockroach ARIADNA study see the videos in supplementary material
Kevin de Groote

BBC - Future - 1 views

www.bbc.com/future

shared by Kevin de Groote on 13 Jun 12 - No Cached
LeopoldS liked it
  • Kevin de Groote on 13 Jun 12
     
    Worth following for inspiration?
  • LeopoldS on 15 Jun 12
     
    Yes, definitely!
  • Ma Ru on 17 Jun 12
     
    "We're sorry but this site is not accessible from the UK as it is part of our international service and is not funded by the licence fee. It is run commercially by BBC Worldwide, a wholly-owned subsidiary of the BBC, the profits made from it go back to BBC programme-makers to help fund great new BBC programmes. You can find out more about BBC Worldwide and its digital activities at www.bbcworldwide.com." In other words, UK is not part of the world...
Paul N

Sugar battery promises 10 times the energy density of lithium - 1 views

www.extremetech.com/...hone-might-soon-run-on-enzymes

BIO technology nrg

shared by Paul N on 22 Jan 14 - No Cached
  • LeopoldS on 22 Jan 14
     
    intriguing but of little interest for space it seems to me
Daniel Hennes

A.I. XPRIZE - 3 views

www.xprize.org/TED

AI technology TED

shared by Daniel Hennes on 20 Mar 14 - No Cached
  • Daniel Hennes on 20 Mar 14
     
    TED is sponsoring an A.I. XPRIZE. The goal? Develop an artificial intelligence that jumps on stage and gives a 3min talk on a random topic...
  • Ma Ru on 21 Mar 14
     
    I am going to propose that the rules include in addition something practical - like washing the dishes... If we are to foster progress, let's finally do so in the right direction...
  • Paul N on 24 Mar 14
     
    This sort of reminds me of Hinton's paper from some years ago: http://www.cs.utoronto.ca/~ilya/pubs/2011/LANG-RNN.pdf Train it on previous TED talks and let it run TED talk - like gibberish. It would probably be of similar value. He had a nice one on the meaning of life but I can't find it anymore.
Dario Izzo

NASA Brings Earth Science 'Big Data' to the Cloud with Amazon Web Services | NASA - 3 views

www.nasa.gov/...cloud-with-amazon-web-services

big data

shared by Dario Izzo on 12 Nov 13 - No Cached
  • Dario Izzo on 12 Nov 13
     
    NASA answer to the big data hype
  • Athanasia Nikolaou on 13 Nov 13
     
    "The service encompasses selected NASA satellite and global change data sets -- including temperature, precipitation, and forest cover -- and data processing tools from the NASA Earth Exchange (NEX)" Very good marketing move for just three types of selected data (MODIS, Landsat products) plus four model runs (past/projection) for the the four greenhouse gas emissions scenarios of the IPCC. It looks as if they are making data available to adress a targeted question (crowdsourcing of science, as Paul mentioned last time, this time climate evolution), not at all the "free scrolling of the user around the database" to pick up what he thinks useful, mode. There is already more rich libraries out there when it comes to climate (http://icdc.zmaw.de/) Maybe simpler approach is the way to go: make available the big data sets categorized by study topic (climate evolution, solar system science, galaxies etc.) and not by instrument or mission, which is more technical, so that the amateur user can identify his point of interest easily.
  • Thijs Versloot on 13 Nov 13
     
    They are taking a good leap forward with it, but it definitely requires a lot of post processing of the data. Actually it seems they downsample everything to workable chunks. But I guess the power is really in the availability of the data in combination with Amazon's cloud computing platform. Who knows what will come out of it if hundreds of people start interacting with it.
dejanpetkow

3D Holographic Power Point Presentation at ASE 2013 - 1 views

www.youtube.com/watch

technology

shared by dejanpetkow on 29 Nov 13 - No Cached
  • dejanpetkow on 29 Nov 13
     
    THIS is how the ACT should give its science coffees, and I am not referring to the fat stage or the guy's dress. Next time I'm attending this traditional ACT exercise I expect such a show!
  • Thijs Versloot on 30 Nov 13
     
    Thats pretty cool indeed! I am for it in the next budget run! :) However, its technically not holographic though as this looks like a projection on Mylar film at 45 degrees from a bottom projector. It looks 3D and holographic as the background is transparent.
Thijs Versloot

Power hiking, single footstep powering 600 #LEDS - 1 views

pubs.acs.org/...nl4001053

LED technology energy

shared by Thijs Versloot on 04 Oct 13 - No Cached
  • LeopoldS on 05 Oct 13
     
    nice indeed! " Triggered by commonly available ambient mechanical energy such as human footfalls, a NG with size smaller than a human palm can generate maximum short-circuit current of 2 mA, delivering instantaneous power output of 1.2 W to external load. The power output corresponds to an area power density of 313 W/m2 and a volume power density of 54 268 W/m3 at an open-circuit voltage of 1200 V. An energy conversion efficiency of 14.9% has been achieved. The power was capable of instantaneously lighting up as many as 600 multicolor commercial LED bulbs. The record high power output for the NG is attributed to optimized structure, proper materials selection and nanoscale surface modification. This work demonstrated the practicability of using NG to harvest large-scale mechanical energy, such as footsteps, rolling wheels, wind power, and ocean waves."
  • Thijs Versloot on 07 Oct 13
     
    You should be able to put it also in your shoes such that you may be able to power some gadgets. Thinking about it, I have seen many kids already running around with brightly lit sneakers!
Thijs Versloot

Norway loves electric cars - 0 views

cleantechnica.com/...-cars-two-months-row-7-reasons

technology EV market

shared by Thijs Versloot on 03 Dec 13 - No Cached
  • Thijs Versloot on 03 Dec 13
     
    The main reasons: (1) awareness, people know that a variety of consumer cars exist (2) negative incentives that push people away from gasoline powered cars, eg fuel taxes (3) positive incentives, exemption from road tax, purchase tax and free parking (all temporary) and (4) extensive recharging infrastructure. Other countries have some/all of these elements, but Norway has pushes mostly and the result is that the nissan leaf was the best sold car in September and October, beating all other cars.
  • Ma Ru on 03 Dec 13
     
    If there's anyone who could afford such things, it is Norway... According to http://xkcd.com/980/, Oljefondet (http://en.wikipedia.org/wiki/Government_Pension_Fund_of_Norway) is currently worth nearly as much as US has spent on wars. I mean, all of them together... One of the biggest problems in Norway is what to do with this money without damaging the economy in the long run :-)
Christophe Praz

Can You Slow Down a Day Using Angular Momentum? - 4 views

www.wired.com/...n-a-day-using-angular-momentum

fun PHY

shared by Christophe Praz on 29 Apr 14 - No Cached
  • Christophe Praz on 29 Apr 14
     
    "Could you do this? Could a spinning human slow down the Earth? Theoretically, yes." Let's all put our ice skates on and spin to enjoy a longer daytime !
  • johannessimon81 on 30 Apr 14
     
    Actually the length of a day fluctuates naturally. Some effects are periodic (e.g. due to seasons) while others accumulate to a general lengthening of the day (like the influence of tides): http://en.wikipedia.org/wiki/Fluctuations_in_the_length_of_day
  • Dario Izzo on 01 May 14
     
    Is it not more efficient to just all start running eastward? We could have a new "Jump Day" frenzy :)
Beniamino Abis

The Wisdom of (Little) Crowds - 1 views

phenomena.nationalgeographic.com/...the-wisdom-of-little-crowds

BIO science math groups

shared by Beniamino Abis on 30 Apr 14 - No Cached
Dario Izzo liked it
  • Beniamino Abis on 30 Apr 14
     
    What is the best (wisest) size for a group of individuals? Couzin and Kao put together a series of mathematical models that included correlation and several cues. In one model, for example, a group of animals had to choose between two options-think of two places to find food. But the cues for each choice were not equally reliable, nor were they equally correlated. The scientists found that in these models, a group was more likely to choose the superior option than an individual. Common experience will make us expect that the bigger the group got, the wiser it would become. But they found something very different. Small groups did better than individuals. But bigger groups did not do better than small groups. In fact, they did worse. A group of 5 to 20 individuals made better decisions than an infinitely large crowd. The problem with big groups is this: a faction of the group will follow correlated cues-in other words, the cues that look the same to many individuals. If a correlated cue is misleading, it may cause the whole faction to cast the wrong vote. Couzin and Kao found that this faction can drown out the diversity of information coming from the uncorrelated cue. And this problem only gets worse as the group gets bigger.
  • Dario Izzo on 02 May 14
     
    Couzin research was the starting point that co-inspired PaGMO from the very beginning. We invited him (and he came) at a formation flying conference for a plenary here in ESTEC. You can see PaGMO as a collective problem solving simulation. In that respect, we learned already that the size of the group and its internal structure (topology) counts and cannot be too large or too random. One of the project the ACT is running (and currently seeking for new ideas/actors) is briefly described here (http://esa.github.io/pygmo/examples/example2.html) and attempts answering the question :"How is collective decision making influenced by the information flow through the group?" by looking at complex simulations of large 'archipelagos'.
Thijs Versloot

Concordia calling #ESA - 4 views

www.esa.int/...Concordia_calling

science antarctica

shared by Thijs Versloot on 24 Apr 14 - No Cached
  • Thijs Versloot on 24 Apr 14
     
    Are you a team player who is unafraid of long isolation? Do you have a medical degree and a healthy love of extremes? ESA is offering the chance of a lifetime to run space experiments in one of the world's most isolated places: Concordia research station in Antarctica.
  • Athanasia Nikolaou on 25 Apr 14
     
    One engineer YGT has already reserved his position to go there for maintaining infrastructure, the coming austral winter. Apparent science contribution: low, experience of a lifetime : affirmative!
  • Ma Ru on 26 Apr 14
     
    "team player who is unafraid of long isolation" LOL
LeopoldS

Testla energy Tesla Motors - 2 views

www.teslamotors.com/...teslaenergy

NRG energy batteries

shared by LeopoldS on 01 May 15 - No Cached
  • LeopoldS on 01 May 15
     
    tesla announcing home batteries at 350$/kW
  • ...1 more comment...
  • Thijs Versloot on 08 May 15
     
    Good stuff, no way it will be done in the netherlands however due to the 'equal-return' law in place here still that puts the price of returning to the grid equal to the costs of buying. The costs of this law are enormous however and energy companies would love to get rid off it, and it will in the upcoming years most likely. I wonder however if that makes sense on a regional/national level, returning to the grid on that scale produces a more stable supply. Why store for personal use only?
  • Ma Ru on 10 May 15
     
    Let's do some simple maths... Here in UK, example "economy 7" tarif yields night kWh approx. 12 pence cheaper than during day. Let's say the goal is to store energy equivalent to running a 2kW storage heater for 6 hours during the day. We need 12 kWh, so 12 times $350 this means need to spend approx. 1920 pounds for batteries. Time to break even at ROI: 1920 / 0.12 ~ 7.3 years... And this is assuming using the heater 365 days a year, and quite an expensive tariff (prepaid). SIWB :-)
  • Paul N on 17 May 15
     
    Also need to take into account that battery capacity tends to go down with time and usage
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/.
pacome delva

Plan for 'nuclear clock' unveiled - 0 views

physicsworld.com/...42813

clocks nuclear_clocks phy

shared by pacome delva on 01 Jun 10 - Cached
pacome delva liked it
  • First there were atomic clocks that beat at microwave frequencies. Then along came optical clocks that provide higher frequency standards. Now, physicists in the US have unveiled plans to build the first “nuclear clock” that runs at still higher frequencies. And because it is based on a solid material, the team claims that such a frequency standard could be far less complicated than gas-based atomic and optical clocks – while delivering the same or better accuracy.
Juxi Leitner

'Doomsday Ark' to be Housed on the Moon -A Remote Access Toolkit to Rebuild the Human Race - 5 views

www.dailygalaxy.com/...to-rebuild-the-human-race.html

space science moon base technology bio vault

shared by Juxi Leitner on 04 Jul 10 - Cached
  • our future may reside on the Moon if plans.being drawn up for a “Doomsday ark” on the moon by the European Space Agency are carried through.
  • whether living organisms could survive, European Space Agency scientists are hoping to experiment with growing tulips on the moon within the next decade.
  • would initially be run by robots
  • Juxi Leitner on 04 Jul 10
     
    did not know ESA was doing that!
  • andreiaries on 05 Jul 10
     
    too late, the world will in end in 2012 ......... I fail to see in which scenario this would be better than a couple of vaults on Earth (since there would be no humans on the moon). But if tulips on the moon can convince politicians, I'm all for it.
  • LeopoldS on 05 Jul 10
     
    "The first flowers - tulips or arabidopsis, a plant widely used in research - could be grown in 2012 or 2015 according to Bernard Foing, chief scientist at the agency's research department." - Bernhard strikes again :-)
Joris _

Japan plans to send a robot to the moon | The Australian - 1 views

www.theaustralian.com.au/...story-e6frg8y6-1225947783972

robot space moon

shared by Joris _ on 04 Nov 10 - No Cached
  • the little android's oil bearings and ultrasonic sensors will not work in the lunar vacuum
  • The one-sixth gravity presents problems for stable movement, and Moon dust clogs joints.
  • the Japan Aerospace Exploration Agency (Jaxa), the country's space agency. It runs the rockets needed to deliver their robot to the Moon and, so far, has been distinctly cool on the idea.
  • Joris _ on 04 Nov 10
     
    Interesting! I like the quote "Maybe China would allow that to be a one-way trip but, in Japan, it would have to be a return ticket" talking about a human mission ....
Luzi Bergamin

YouTube - Aircraft Maker to Make A Test Run - 1 views

www.youtube.com/watch

technology aircraft aerospace

shared by Luzi Bergamin on 29 Oct 10 - No Cached
  • Luzi Bergamin on 29 Oct 10
     
    A computer technician from Nairobi builds his own aircraft from scratch, using information on aerospace engineering available on internet... Idea for African spachteln programs??
LeopoldS

Meet The Man Who Paid A Record $335,000 For Virtual Property - Oliver Chiang - SelectSt... - 7 views

blogs.forbes.com/...rd-335000-for-virtual-property

fun INF

shared by LeopoldS on 30 Nov 10 - No Cached
  • LeopoldS on 30 Nov 10
     
    does he also have to pay property tax?
  • ...4 more comments...
  • LeopoldS on 30 Nov 10
     
    "He says he made the purchase partly because he wants to be able to spend more time in the virtual world. Before, he was averaging 10 to 20 hours per week. He wants to be able to spend about 40 to 60 hours a week now, basically making running the virtual asteroid a full-time job. (He'll also be cutting back on the time he spends developing software in real life.)"
  • andreiaries on 30 Nov 10
     
    From what I remember when I visited the developer/producer company HQ, he wouldn't have to pay any taxes. If he has a virtual business he might have to pay them a license fee. If you want to start a virtual bank, you would need to buy a banking license. The money thing is quite regulated in this enviroment, so probably that's why property prices can be quite high.
  • Joris _ on 30 Nov 10
  • LeopoldS on 01 Dec 10
     
    Remember the study but have completely zapped that this was with this company ... GSP rules :-)
  • LeopoldS on 01 Dec 10
     
    so how does that state get his money from this type of economy? where is the VAT in there?
  • andreiaries on 01 Dec 10
     
    Last time I checked the "state" was still loosing money. But their main income is the sale of resources. Mostly new land, but I believe at some point they wanted to sell their initial planet too.
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