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santecarloni

Reeling in cheap plastic solar film - physicsworld.com - 0 views

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    A UK-based start-up is developing printable, thin-film plastic solar cells aimed at providing affordable electricity to individual dwellings that have no grid connection, such as those in rural Africa
LeopoldS

Concept | Superbus - 3 views

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    electric bus driving at 250 km/h (and braking within 200m!) project related to former astronaut Wubbo ...
Lionel Jacques

IHI Prototypes EV With Wireless Power Feeding System -- Tech-On! - 0 views

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    The prototyped EV equipped with a wireless power feeding system is based on the electric version of Volkswagen's "Golf." IHI Corp announced Nov 22, 2011, that it has added a wireless power receiving function to an electric vehicle (EV) and begun to test it by simulating actual use conditions.
Lionel Jacques

Solvay has successfully commissioned the largest PEM fuel cell in the world at SolVin's... - 0 views

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    Solvay announced today it has successfully commissioned its 1 MegaWatt (MW) industrial demonstration Fuel Cell at the SolVin plant in Lillo, Antwerp, Belgium. This Proton Exchange Membrane (PEM) Fuel Cell converts coproduced hydrogen (H2) in the plant into electricity and is now producing for weeks at a steady rate. The Fuel Cell has generated over 500 MWh in about 800 hours of operation, which amounts to the electricity consumption of 1370 families during the same time frame.
Lionel Jacques

NASA studying solar-electric propulsion for "space tugboat" - 0 views

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    NASA announced it was seeking proposals for mission concept studies of a high-power solar electric propulsion (SEP) system that could be used in a "space tugboat." Such a ship would be used ferry payloads in low Earth orbit (LEO) into higher energy orbits,
Tom Gheysens

How electricity helps spider webs snatch prey and pollutants - 0 views

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    interesting article on spider webs as electrostatic catchers. Would be interesting to see if they also catch bacteria by this principle for the cleanrooms at ESA and the ISS... 
Thijs Versloot

Wirelessly charged buses start operation in UK - 1 views

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    Charged like your electric toothbrush by lowering the receiving coils to 4cm above the ground.
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    nice; there are similar trials ongoing a bit all over; there is one I know of in Mannheim, where i think they have quick charging coils at each stop to reduce the battery mass they need to carry; I have seen a demonstration of this in Kyoto university about 13 years ago on a normal car - even one where they had an entire road equipped with these chargers and tested with charging as you go , charing at traffic stops, parking etc ....
Jacco Geul

Graphene conducts electricity ten times better than expected - 0 views

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    Grown nanoribbons exhibit better conductivity than theory predicts.
Daniel Hennes

The World's Largest Solar Plant Started Creating Electricity Today - 3 views

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    The enormous solar plant-jointly owned by NRG Energy, BrightSource Energy and Google-opened for business today ... well yesterday, but still impressive!
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    impressive! and google is among the owners.
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    impressive pictures - looking at the 2nd to last and 4th to last one, I am wondering how this distributed individually control of the mirrors works - and idea?
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    Machine learning obviously. Most likely neural networks :P On the other hand: http://sploid.gizmodo.com/the-worlds-largest-solar-plant-is-killing-birds-meltin-1525107821
Thijs Versloot

Biomass based fuel cells - 0 views

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    Despite the benefits of low-temperature fuel cell technologies, they cannot directly use biomass as a fuel because of the lack of an effective catalyst system. However, Georgia Institute of Technology researchers have developed a low-temperature fuel cell that directly converts a wide variety of biomass sources to electricity. Possible application areas are local electricity supply in developing countries
Guido de Croon

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

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    Nice discussion about the singularity. Made me think of drinking coffee with Luis... It raises some issues such as the necessity of embodiment, etc.
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    "Kurzweilians"... LOL. Still not sold on embodiment, btw.
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    The biggest problem with embodiment is that, since the passive walkers (with which it all started), it hasn't delivered anything really interesting...
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    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.
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    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.
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    @Paul: How would embodiment be done RIGHT?
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    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.
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    @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.
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    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.
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    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
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    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.
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    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.
Marcus Maertens

Accidental Discovery Dramatically Improves Electrical Conductivity - - iTech Post - 3 views

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    Oh those bloody physicists... someone forgot to turn off the lights and now they have a 400 times better conductive crystal. If science was always that easy, I would light a candle every day.
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    One of the reason why I like science, those random things that sometimes happen with outcomes you just didn't expect
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    Apparently this was not the first discovery of this effect involving SrTiO3. In an article from 2012 a conductance increase of 5 orders in magnitude is described (http://pubs.acs.org/doi/abs/10.1021/nn203991q). But indeed many large impact discoveries are accidental...
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    I thought we all knew already that science is just another form of directed random search :)))
Thijs Versloot

Norway loves electric cars - 0 views

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    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.
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    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 :-)
Dario Izzo

Plasma Jet Electric Thrusters for Spacecraft by Chris Faranetta - Kickstarter - 6 views

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    Funded!!!
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    "Because, quite simply, we think ours will be better!"
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    "Right hand rules!"
Athanasia Nikolaou

Perovskite Solar Cells Get the Lead Out - 1 views

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    The fast developping solar cell technology of perovskites. "Perovskites are a broad class of crystalline minerals that have been known for well over a century. But their ability to convert solar energy to electricity came to light only in 2009. Since then, the efficiency of perovskite solar cells has climbed from 3.8% to 19.3%, a pace of improvement unmatched by any other solar technology. By comparison, crystalline silicon solar cells, the leading commercial technology, convert about 25% of solar energy to electricity."
LeopoldS

Enhanced Oil Recovery Powered by Solar - 0 views

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    instead of using the solar generated steam to generate electricity, it seems to make economic sense to use it to pump more oil out of the ground ...
Thijs Versloot

Electromagnetism generated by symmetry breaking in dielectrics - 0 views

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    Using dielectric materials as efficient EM radiators and receivers can scale down these antenna's to the chip level, reducing both weight and power consumption. The infamous internet-of-things one step closer. But could we also transmit power this way?? "In dielectric aerials, the medium has high permittivity, meaning that the velocity of the radio wave decreases as it enters the medium," said Dr Dhiraj Sinha, the paper's lead author. "What hasn't been known is how the dielectric medium results in emission of electromagnetic waves. This mystery has puzzled scientists and engineers for more than 60 years." The researchers determined that the reason for this phenomenon is due to symmetry breaking of the electric field associated with the electron acceleration The researchers found that by subjecting the piezoelectric thin films to an asymmetric excitation, the symmetry of the system is similarly broken, resulting in a corresponding symmetry breaking of the electric field, and the generation of electromagnetic radiation.
nikolas smyrlakis

Dynamic Coalition on Internet and Climate Change - 0 views

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    IGF - The Internet Governance Forum. Did you know that the Internet and its usage are responsible for 5 per cent of the world's total electricity consumption
LeopoldS

OhGizmo! » Archive » [CES 2010] RCA Airnergy Charger Harvests Electricity F... - 3 views

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    this is what I call wireless power transmission really applied ...!
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    this is amazing !
Luís F. Simões

Wind Power Without the Blades: Big Pics : Discovery News - 4 views

  • The carbon-fiber stalks, reinforced with resin, are about a foot wide at the base tapering to about 2 inches at the top. Each stalk will contain alternating layers of electrodes and ceramic discs made from piezoelectric material, which generates a current when put under pressure. In the case of the stalks, the discs will compress as they sway in the wind, creating a charge.
  • Based on rough estimates, said Núñez-Ameni the output would be comparable to that of a conventional wind farm covering the same area
  • After completion, a Windstalk should be able to produce as much electricity as a single wind turbine, with the advantage that output could be increased with a denser array of stalks. Density is not possible with conventional turbines, which need to be spaced about three times the rotor's diameter in order to avoid air turbulence. But Windstalks work on chaos and turbulence so they can be installed much closer together, said Núñez-Ameni.
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  • Núñez-Ameni also reports that the firm is currently working on taking the Windstalk idea underwater. Called Wavestalk, the whole system would be inverted to harness energy from the flow of ocean currents and waves.
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    additional information: http://atelierdna.com/?p=144
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    isn't this a bit of a contradiction: on the one hand: "Based on rough estimates, said Núñez-Ameni the output would be comparable to that of a conventional wind farm covering the same area" and on the other: "After completion, a Windstalk should be able to produce as much electricity as a single wind turbine, with the advantage that output could be increased with a denser array of stalks. Density is not possible with conventional turbines, which need to be spaced about three times the rotor's diameter in order to avoid air turbulence. " still, very interesting concept!
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