Skip to main content

Home/ Advanced Concepts Team/ Group items tagged science

Rss Feed Group items tagged

Guido de Croon

Robot termites able to build various structures - 0 views

  •  
    Nice application of swarm robotics for building various structures. See the video at: http://www.youtube.com/watch?v=LFwk303p0zY Their compilation process of a desired structure into local behavior rules seems of most interest.
tvinko

Futurium - European Commission - 2 views

  •  
    surprised that I do not see ACT members on this list talking about FUTURE ;-)
Thijs Versloot

Role of data visualization in the scientific community @britishlibrary - 1 views

  •  
    In a new exhibition titled Beautiful Science: Picturing Data, Inspiring Insight [bl.uk], the British Library pays homage to the important role data visualization plays in the scientific process. The exhibition can be visited from 20 February until 26 May 2014, and contains works ranging from John Snow's plotting of the 1854 London cholera infections on a map to colourful depictions of the Tree of Life.
Tom Gheysens

Sea Sapphire: the Most Beautiful Animal You've Never Heard Of - 3 views

  •  
    this is what I call truly cloaking!...of course only found in and made by nature :) (video at the bottom of the page)
  •  
    Definitely beautiful, even psychedelic maybe.. but technically its not really cloaking, you wouldn't call your window a cloaking device right? :)
  •  
    The video looks surreal!
johannessimon81

Computing with RNA - 0 views

  •  
    After a discussion this morning on robust computing and possible implementations in biological systems I found this really nice result (from 2008) on molecular RNA computers that get assembled within cells and perform simple functions. Of course by having different types of computers within the same cell one could go on to process the output of the other and more complex computations could be executed... Food for thought. :-)
Paul N

Three-Dimensional Mid-Air Acoustic Manipulation - 0 views

  •  
    Turns out you can do stuff with sound if you have enough of it.
johannessimon81

Genetic mugshot recreates faces from nothing but DNA - 3 views

  •  
    By just getting a DNA footprint of a person scientists (and soon police) can produce an image of the person's face. Check out the pictures!
  • ...2 more comments...
  •  
    wow thats pretty amazing! Ok, the pictures are not great (mainly due to skin surface, baggy eyes, zits I guess) but considering its only from DNA it is pretty close already. That will help crime scene investigations greatly, whether positively or negatively.
  •  
    Ouch! You're pretty harsh on that lady... :-o
  •  
    should try it the other way around, deduce the DNA from facial features. That would be even cooler.
  •  
    Well actually, they did something like that as they searched for common DNA patterns in people that had similar facial features. With a large enough dataset that could provide already 24 DNA tracers that could used reliably for prediction. Imagine if you had even more data available, who needs a model then... just let the NN do it :)
johannessimon81

Crack resistant glass inspired by teeth and nautilus shells - 0 views

  •  
    Patterning the glass can make it up to 200 times more resistant to forming cracks
johannessimon81

Air pollution weakens hurricanes - 3 views

  •  
    Problem solved.
  • ...1 more comment...
  •  
    Also, tornados could be stopped from forming by building 300 m tall, 100 km long walls across the USA: http://www.wired.co.uk/news/archive/2014-03/08/tornado-walls
  •  
    Those would also work very well to keep the Kaiju's out..
  •  
    Good point!
johannessimon81

Bioengineer builds 50-cent paper microscope - 1 views

  •  
    Awesome! Origami finally got useful! :-D
Ma Ru

Here come gravitational waves - 3 views

  •  
    Here you go. You can now scrap Lisa altogether. Who's going to tell Pacome?
  •  
    Awesome and exciting stuff indeed! The data pinpoint the time when inflation occurred - about 10E-37 seconds into the Universe's life - and its temperature at the time, corresponding to energies of about 10E16 gigaelectronvolts, says cosmologist Michael Turner of the University of Chicago. That is the same energy at which three of the four fundamental forces of nature - the weak, strong and electromagnetic force - are expected to become indistinguishable from one another in a model known as the grand unified theory. I expect more fundamental physics insights to come out of this in the future. A full-sky survey from space may still be an interesting addition to the measurement capabilities, so I would not rule out LISA all together I guess...
Tom Gheysens

Did dark matter kill the dinosaurs? : Nature News & Comment - 1 views

  •  
    theoretical physicists... :) Read the last sentence of the paper...in this way anyone can publish in nature...just make a good story with little evidence Did dark matter kill the dinosaurs? The Solar System's periodic passage through a 'dark disk' on the galactic plane could trigger comet bombardments that would cause mass extinctions.
  •  
    Hmm.. right.. then again, this is not an actual journal publication but a news broadcast. But you are right that the name Nature is attached to it so the journal is definitely banking on their acquired status.
johannessimon81

Nasa-funded study: industrial civilisation headed for 'irreversible collapse'? - 4 views

  •  
    Sounds relevant. Does ESA need to have a position on this question?
  •  
    This was on Slashdot now, with a link to the paper. It quite an iteresting study actually. "The scenarios most closely reflecting the reality of our world today are found in the third group of experiments (see section 5.3), where we introduced economic stratification. Under such conditions, we find that collapse is difficult to avoid."
  •  
    Interesting, but is it new? In general, I would say that history has shown us that it is inevitable that civilisations get replaced by new concepts (much is published about this, read eg Fog of War by Jona Lendering on the struggles between civilisations in ancient history, which have remarkably similar issues as today, yet on a different scale of course). "While some members of society might raise the alarm that the system is moving towards an impending collapse and therefore advocate structural changes to society in order to avoid it, Elites and their supporters, who opposed making these changes, could point to the long sustainable trajectory 'so far' in support of doing nothing." I guess this bang on it, the ones that can change the system, are not benefitted by doing so, hence enrichment, depletion, short term gain remain and might even accelerate to compensate for the loss in the rest of the system.
Guido de Croon

Will robots be smarter than humans by 2029? - 2 views

  •  
    Nice discussion about the singularity. Made me think of drinking coffee with Luis... It raises some issues such as the necessity of embodiment, etc.
  • ...9 more comments...
  •  
    "Kurzweilians"... LOL. Still not sold on embodiment, btw.
  •  
    The biggest problem with embodiment is that, since the passive walkers (with which it all started), it hasn't delivered anything really interesting...
  •  
    The problem with embodiment is that it's done wrong. Embodiment needs to be treated like big data. More sensors, more data, more processing. Just putting a computer in a robot with a camera and microphone is not embodiment.
  •  
    I like how he attacks Moore's Law. It always looks a bit naive to me if people start to (ab)use it to make their point. No strong opinion about embodiment.
  •  
    @Paul: How would embodiment be done RIGHT?
  •  
    Embodiment has some obvious advantages. For example, in the vision domain many hard problems become easy when you have a body with which you can take actions (like looking at an object you don't immediately recognize from a different angle) - a point already made by researchers such as Aloimonos.and Ballard in the end 80s / beginning 90s. However, embodiment goes further than gathering information and "mental" recognition. In this respect, the evolutionary robotics work by for example Beer is interesting, where an agent discriminates between diamonds and circles by avoiding one and catching the other, without there being a clear "moment" in which the recognition takes place. "Recognition" is a behavioral property there, for which embodiment is obviously important. With embodiment the effort for recognizing an object behaviorally can be divided between the brain and the body, resulting in less computation for the brain. Also the article "Behavioural Categorisation: Behaviour makes up for bad vision" is interesting in this respect. In the field of embodied cognitive science, some say that recognition is constituted by the activation of sensorimotor correlations. I wonder to which extent this is true, and if it is valid for extremely simple creatures to more advanced ones, but it is an interesting idea nonetheless. This being said, if "embodiment" implies having a physical body, then I would argue that it is not a necessary requirement for intelligence. "Situatedness", being able to take (virtual or real) "actions" that influence the "inputs", may be.
  •  
    @Paul While I completely agree about the "embodiment done wrong" (or at least "not exactly correct") part, what you say goes exactly against one of the major claims which are connected with the notion of embodiment (google for "representational bottleneck"). The fact is your brain does *not* have resources to deal with big data. The idea therefore is that it is the body what helps to deal with what to a computer scientist appears like "big data". Understanding how this happens is key. Whether it is the problem of scale or of actually understanding what happens should be quite conclusively shown by the outcomes of the Blue Brain project.
  •  
    Wouldn't one expect that to produce consciousness (even in a lower form) an approach resembling that of nature would be essential? All animals grow from a very simple initial state (just a few cells) and have only a very limited number of sensors AND processing units. This would allow for a fairly simple way to create simple neural networks and to start up stable neural excitation patterns. Over time as complexity of the body (sensors, processors, actuators) increases the system should be able to adapt in a continuous manner and increase its degree of self-awareness and consciousness. On the other hand, building a simulated brain that resembles (parts of) the human one in its final state seems to me like taking a person who is just dead and trying to restart the brain by means of electric shocks.
  •  
    Actually on a neuronal level all information gets processed. Not all of it makes it into "conscious" processing or attention. Whatever makes it into conscious processing is a highly reduced representation of the data you get. However that doesn't get lost. Basic, low processed data forms the basis of proprioception and reflexes. Every step you take is a macro command your brain issues to the intricate sensory-motor system that puts your legs in motion by actuating every muscle and correcting every step deviation from its desired trajectory using the complicated system of nerve endings and motor commands. Reflexes which were build over the years, as those massive amounts of data slowly get integrated into the nervous system and the the incipient parts of the brain. But without all those sensors scattered throughout the body, all the little inputs in massive amounts that slowly get filtered through, you would not be able to experience your body, and experience the world. Every concept that you conjure up from your mind is a sort of loose association of your sensorimotor input. How can a robot understand the concept of a strawberry if all it can perceive of it is its shape and color and maybe the sound that it makes as it gets squished? How can you understand the "abstract" notion of strawberry without the incredibly sensible tactile feel, without the act of ripping off the stem, without the motor action of taking it to our mouths, without its texture and taste? When we as humans summon the strawberry thought, all of these concepts and ideas converge (distributed throughout the neurons in our minds) to form this abstract concept formed out of all of these many many correlations. A robot with no touch, no taste, no delicate articulate motions, no "serious" way to interact with and perceive its environment, no massive flow of information from which to chose and and reduce, will never attain human level intelligence. That's point 1. Point 2 is that mere pattern recogn
  •  
    All information *that gets processed* gets processed but now we arrived at a tautology. The whole problem is ultimately nobody knows what gets processed (not to mention how). In fact an absolute statement "all information" gets processed is very easy to dismiss because the characteristics of our sensors are such that a lot of information is filtered out already at the input level (e.g. eyes). I'm not saying it's not a valid and even interesting assumption, but it's still just an assumption and the next step is to explore scientifically where it leads you. And until you show its superiority experimentally it's as good as all other alternative assumptions you can make. I only wanted to point out is that "more processing" is not exactly compatible with some of the fundamental assumptions of the embodiment. I recommend Wilson, 2002 as a crash course.
  •  
    These deal with different things in human intelligence. One is the depth of the intelligence (how much of the bigger picture can you see, how abstract can you form concept and ideas), another is the breadth of the intelligence (how well can you actually generalize, how encompassing those concepts are and what is the level of detail in which you perceive all the information you have) and another is the relevance of the information (this is where the embodiment comes in. What you do is to a purpose, tied into the environment and ultimately linked to survival). As far as I see it, these form the pillars of human intelligence, and of the intelligence of biological beings. They are quite contradictory to each other mainly due to physical constraints (such as for example energy usage, and training time). "More processing" is not exactly compatible with some aspects of embodiment, but it is important for human level intelligence. Embodiment is necessary for establishing an environmental context of actions, a constraint space if you will, failure of human minds (i.e. schizophrenia) is ultimately a failure of perceived embodiment. What we do know is that we perform a lot of compression and a lot of integration on a lot of data in an environmental coupling. Imo, take any of these parts out, and you cannot attain human+ intelligence. Vary the quantities and you'll obtain different manifestations of intelligence, from cockroach to cat to google to random quake bot. Increase them all beyond human levels and you're on your way towards the singularity.
Luís F. Simões

Evolution of AI Interplanetary Trajectories Reaches Human-Competitive Levels - Slashdot - 4 views

  • "It's not the Turing test just yet, but in one more domain, AI is becoming increasingly competitive with humans. This time around, it's in interplanetary trajectory optimization. From the European Space Agency comes the news that researchers from its Advanced Concepts Team have recently won the Gold 'Humies' award for their use of Evolutionary Algorithms to design a spacecraft's trajectory for exploring the Galilean moons of Jupiter (Io, Europa, Ganymede and Callisto). The problem addressed in the awarded article (PDF) was put forward by NASA/JPL in the latest edition of the Global Trajectory Optimization Competition. The team from ESA was able to automatically evolve a solution that outperforms all the entries submitted to the competition by human experts from across the world. Interestingly, as noted in the presentation to the award's jury (PDF), the team conducted their work on top of open-source tools (PaGMO / PyGMO and PyKEP)."
  •  
    We made it to Slashdot's frontpage !!! :)
  •  
    Congratulations, gentlemen!
Thijs Versloot

Long-range chemical sensors using new high power continuum lasers - 0 views

  •  
    Short range chemical analysis methods exist already, but using new high power lasers one could extend the operation length to e.g aircraft.
  •  
    Isabelle?
  •  
    The optical setup is very simple and lightweight: a compact semi-conductor DFB laser source and an all optical fiber system for amplification and supercontinuum generation. Interesting for space applications!
Marcus Maertens

'Impossible' material made by Uppsala University researchers - 1 views

  •  
    Something for our Nano structure fans. Funniest remark: "One of the researchers got to take advantage of his Russian language skills since some of the chemistry details necessary for understanding the reaction mechanism was only available in an old Russian PhD thesis."
Beniamino Abis

Autonomous Robots Self-Assemble and Take Flight as One - 1 views

  •  
    On the way towards autonomous flying deliveries and building a Megazord formation!
Thijs Versloot

Molten air - a new type of high capacity rechargeable batteries - 2 views

  •  
    The battery is based on a liquid electrolyte that uses oxygen from the surrounding air to produce a high battery capacity (up to 27kWh per liter). Needless to say, this type requires an atmosphere to operate and who knows what environmental impacts may be
« First ‹ Previous 601 - 620 of 1417 Next › Last »
Showing 20 items per page