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robots.net - Physics-based Planning - 0 views

  • Later this month, Carnegie Mellon's CMDragons small-size robotic soccer team will be competing again at RoboCup, to be held in Singapore. CMDragons has tended to find their edge in their software as opposed to their hardware. Their latest software advantage will be their new "physics-based planning", using physics to decide how to move and turn with the ball in order to maintain control. Previous control strategies simply planned where the robot should move to and shoot from, assuming a ball placed at the front center of the dribbler bar would stay there. The goal of Robocup is to create a humanoid robotic soccer team to compete against human players in 2050. Manuela Veloso, the professor who leads the Carnegie Mellon robotic soccer lab, "believe[s] that the physics-based planning algorithm is a particularly noteworthy accomplishment" that will take the effort one step closer to the collective goal.
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・e-nuvo HUMANOID - 0 views

  • The Nippon Institute of Technology, with Harada Vehicle Design, ZMP, and ZNUG Design, have developed a humanoid robot about the size of an elementary school student for educational purposes.  The university adopted 35 of ZMP’s e-nuvo WALK robots in 2004 for a 1:1 student-robot ratio.  Whereas the e-nuvo WALK (the educational version of NUVO) is quite small, the new robot is tall enough to interact with its environment in a more meaningful way.  Students will demonstrate the robot at elementary and junior high schools, as well as care facilities.  The goal is to improve student learning by raising awareness of bipedal robot technology and its connection to math and physics, while also giving them hands-on experience with the bot.  Additionally, by visiting care facilities the university students will come to understand the real-world needs and applications for robots.
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    The Nippon Institute of Technology, with Harada Vehicle Design, ZMP, and ZNUG Design, have developed a humanoid robot about the size of an elementary school student for educational purposes.  The university adopted 35 of ZMP's e-nuvo WALK robots in 2004 for a 1:1 student-robot ratio.  Whereas the e-nuvo WALK (the educational version of NUVO) is quite small, the new robot is tall enough to interact with its environment in a more meaningful way.  Students will demonstrate the robot at elementary and junior high schools, as well as care facilities.  The goal is to improve student learning by raising awareness of bipedal robot technology and its connection to math and physics, while also giving them hands-on experience with the bot.  Additionally, by visiting care facilities the university students will come to understand the real-world needs and applications for robots.\nThe e-nuvo HUMANOID stands 126cm (4′) tall and weighs 15kg (33 lbs), with 21 degrees of freedom (2 legs x6, 2 arms x3, head x3), powered by a Lithium Ion battery.  It is equipped with the usual sensors including cameras, accelerometers, gyro sensors, obstacle detection sensors, distance sensors, and peizoelectric sensors, and can be controlled via PC or remote controller.  Besides basic speech capabilities, the robot can serve as a kind of teacher's assistant, since it has a built-in projector which will allow it to display diagrams on a blackboard that might be difficult to explain in words alone.  The robot will be programmed using Microsoft Robotics Developer Studio, which the students have been using to test control algorithms for the e-nuvo WALK robots
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NASA -Voyager Makes an Interstellar Discovery - 1 views

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    "December 23, 2009: The solar system is passing through an interstellar cloud that physics says should not exist. In the Dec. 24th issue of Nature, a team of scientists reveal how NASA's Voyager spacecraft have solved the mystery. see caption"Using data from Voyager, we have discovered a strong magnetic field just outside the solar system," explains lead author Merav Opher, a NASA Heliophysics Guest Investigator from George Mason University. "This magnetic field holds the interstellar cloud together and solves the long-standing puzzle of how it can exist at all.""
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TechOnline | Study of Model Based Etch Bias Retarget for OPC - 0 views

  • Model based Optical proximity correction is usually used to compensate for the pattern distortion during the microlithography process. Currently, almost all the lithography effects, such as the proximity effects from the limited NA, the 3D mask effects due to the shrinking critical dimension, the photo resist effects, and some other well known physical process, can all be well considered into modeling with the OPC algorithm. However, the micro-lithography is not the final step of the pattern transformation procedure from the mask to the wafer. The etch process is also a very important stage. It is well known that till now, the etch process still can't be well explained by physics theory. In this paper, we will demonstrate our study on the model based etch bias retarget for OPC.
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Physicists Bring Silicon Chips Closer to Performing All-Optical Computing - 0 views

  • An all-optical integrator, or lightwave capacitor, is a fundamental building block equivalent to those used in multi-functional electronic circuits. Associate Professor David Moss, a senior researcher within the Institute for Photonic and Optical Science (IPOS), leads an international team which has developed the optical integrator on a CMOS compatible silicon chip. The device, a photonic chip compatible with electronic technology (CMOS), will be a key enabler of next generation fully-integrated ultrafast optical data processing technologies for many applications including ultra-fast optical information-processing, optical memory, measurement, computing systems, and real-time differential equation computing units.
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The MongoDB NoSQL Database Blog - Holy Large Hadron Collider, Batman! - 0 views

  • “CMS” stands for Compact Muon Solenoid, a general-purpose particle physics detector built on the Large Hadron Collider. The CMS project posted a few comics which provide a nice, simple (if somewhat cheesy) explanation of what the CMS/LHC does. The LHC generates massive amounts of data of all different varieties, which is distributed across a worldwide grid. It sends status messages to some of the computers, job monitoring info to other computers, bookkeeping info still elsewhere, and so on. This means that each location has specialized queries it can do on the data it has, but up until now it’s been very difficult to query across the whole grid. Enter the Data Aggregation System, designed to allow anything to be queried across all of the machines.
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Brain-controlled prosthetic limb most advanced yet - 0 views

  • Scientists at the Johns Hopkins University Applied Physics Laboratory (APL) were awarded no less than $34.5 million by the Defense Advanced Research Projects Agency (DARPA) to continue their outstanding work in the field of prosthetic limb testing, which has seen them come up with the most advanced model yet. Their Modular Prosthetic Limb (MPL) system is just about ready to be tested on human subjects, as it has proved successful with monkeys. Basically, the prosthetic arm is controlled by the brain through micro-arrays that are implanted (gently) in the head. They record brain signals and send the commands to the computer software that controls the arm. To be honest, it will be interesting to see just how these hair-chips are attached to the brain, but the APL say clinical tests have shown the devices to be entirely harmless. The monkeys didn’t mind them too much, at least.
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Physicists build basic quantum computing circuit - 0 views

  • Exerting delicate control over a pair of atoms within a mere seven-millionths-of-a-second window of opportunity, physicists at the University of Wisconsin-Madison created an atomic circuit that may help quantum computing become a reality.
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CERN Gears Up Its Computers for More Atom Smashing: Scientific American - 0 views

  • A deluge of high-energy physics data is headed toward servers in Geneva, Switzerland, later this month. That's because the European Organization for Nuclear Research (CERN) now says it plans to restart its Large Hadron Collider (LHC) soon for a run that could last as long as two years at a collision energy of seven TeV (tera–electron volts, 3.5 TeV per beam). As CERN ramps up the world's most powerful particle accelerator to operate well beyond its previous best performance, the lab's computer systems must likewise be tuned so they can properly capture and analyze all of this new output.
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QTC Technology - 0 views

  • The potential for the QTC material to transition from an insulator to a conductor (i.e. change its electrical property) is influenced by how much deformation the material is experiencing as a result of the applied mechanical pressure. QTC can be used to produce low profile, low cost, pressure activated switches or sensors that display variable resistance with applied force and return to a quiescent state when the force is removed. The difference between a QTC switch and a QTC sensor is arguably only the speed and amount of physical input required to achieve the required switching point or resistance range.
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Quantum computing leap forward: altering a lone electron without disturbing its neighbors - 1 views

  • A major hurdle in the ambitious quest to design and construct a radically new kind of quantum computer has been finding a way to manipulate the single electrons that very likely will constitute the new machines' processing components or "qubits."
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YouTube - Jazz Pianist Eric Lewis Performs "Thanksgiving" in NPR's Studio 4A - 0 views

  • Jazz pianist Eric Lewis has been wowing audiences since he was barely able to walk. During a recent performance in NPR's Studio 4A, Lewis spoke with host Michele Norris. Now 36, he's still the same dynamic performer, channeling the intensity of his music with energetic physicality. But as he's embraced popular music, he's also created a new musical identity: ELEW. Watch him here and hear the entire interview at http://www.npr.org/templates/story/st...
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Not Just for Fuel Anymore: Hydrocarbons Can Superconduct, Too: Scientific American - 0 views

  • Superconductivity is one of those nearly magical properties that seem to defy all intuition for how the physical world ought to work. In a superconductor, electric currents flow without resistance—an electron passes unimpeded through the material like a torpedo through some frictionless ocean. After discovering the phenomenon in 1911 Dutch physicist Heike Kamerlingh Onnes showed that an electric current in a closed superconducting loop of mercury would keep flowing long after the driving potential was removed; he demonstrated his discovery by carrying such a persistent current from the Netherlands to England. Since then physicists have discovered superconductors based on other metals and even ceramics. The latest entry is one rooted in a hydrocarbon, which superconducts at a relatively high temperature compared with elemental metals.
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IEEE Spectrum: Scientists Solve Mystery of Superinsulators - 0 views

  • In 2008 a team of physicists from Argonne National Laboratory, in Illinois, and other institutions stumbled upon an odd phenomenon. They called it superinsulation, because in many ways it was the opposite of superconductivity. Now they’ve worked out the theory behind it, potentially opening the doors to better batteries, supersensitive sensors, and strange new circuits. Superconductors lose all resistance once they fall below a certain temperature. In superinsulators, on the other hand, the resistance to the flow of electricity becomes infinite at very low temperatures, preventing any flow of electric current.
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IEEE Spectrum: The Wave Function and Quantum Dots: Nanotechnology Videos - 0 views

  • The other day I was critical of the UK’s nanotechnology strategy document. However, I am a great admirer of the UK scientists and engineers working in the field of nanotechnology, which makes the recent strategy document such a double disappointment. To sort of atone for my criticism, I wanted to highlight a UK-based researcher, Professor Philip Moriarty at the University of Nottingham, who first came to my attention a few years back on the pages of Richard Jones’ blog Soft Machines , when Moriarty had organized a debate on the subject of radical nanotechnology, otherwise known as molecular nanotechnology. I also recently noted his ability to secure funding for his research to test the theories of molecular manufacturing, and wondered if he can do it why aren’t more molecular manufacturing theorists doing it.
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IEEE Spectrum: Spintronics Gets Boost from First Images Taken of the Spin of Electrons - 0 views

  • One of the biggest commercial applications of spintronics in computing to date has been the use of giant magnetoresistance (GMR), the material phenomenon that makes possible the huge storage capacity of today’s hard disk drives. In the awarding of the 2007 Nobel Prize in Physics, GMR was cited as the first big commercial application for nanotechnology. But extending the commercial application of spintronic-enabled systems beyond read heads for HDDs has proven to be a difficult task. One need only look at the seemingly endless travails of NVE Corporation, which in its financial results still shows it greatest revenue growth in contract research as opposed to product sales. While recent research from a team of researchers at Ohio State University and the University of Hamburg in Germany may not turn around the fortunes of spintronics in the short term, it does provide a way to better characterize the spin of electrons and thereby promises better ways of exploiting it for electronics applications. The researchers are reporting in Nature Nanotechnology that they have for the first time been able to create images of the spin direction of electrons.
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Redefining electrical current law with the transistor laser - 0 views

  • (Nanowerk News) While the laws of physics weren’t made to be broken, sometimes they need revision. A major current law has been rewritten thanks to the three-port transistor laser, developed by Milton Feng and Nick Holonyak Jr. at the University of Illinois.
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Meeting timing specs on boards with picoseconds of margin - 0 views

  • Length-match your traces to within 100 mils. Or is it 10 mils? Or should you go down to 1 mil? Should you include the lengths of the vias? How about the lengths of resistors? Understanding the origin of length-matching requirements, coupled with some rudimentary signal integrity analysis, can help answer these questions.   Determining length requirements requires an understanding of flight time, electrical length vs. physical length, loading and signal quality. Those elements are vital in determining what the length really needs to be, as well as in determining the allowable trade-offs to meet system timing goals.
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