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Friday, June 21, 2013

?King Mo? wins while ?Babalu? retires at Bellator

One fighter got back on the winning track while another decided to end his career at Bellator's summer debut on Wednesday night.

Muhammed "King Mo" Lawal was knocked out in his last Bellator fight, which was a surprising result for the onetime Strikeforce champ. Wednesday's fight with Seth Petruzelli was his first fight since then, and he came back with a memorable knockout.

Lawal wrestled Petruzelli to the ground, then finished the fight at 1:35 in the first round with a huge right hook. He needed just one punch to knock Petruzelli out. Lawal will move on in Bellator's light heavyweight tournament to fight Jacob Noe.

"It's kind of highly emotional for me to talk about this right now, but I think maybe I've been in the cage more than everybody in this room here," he said. "I lived the life. That's what I want to say. I have no regrets. I was happy to help this sport grow."

Noe earned his spot in the semifinals with a win over Strikeforce and UFC veteran Renato "Babalu" Sobral. He lost in a third-round, standing TKO, then announced his retirement from MMA.

Babalu finished his career with a record of 37-11. He started fighting in 1997, and fought in Brazilians promotions and Rings before fighting at UFC 28. Sobral fought such fighters as Fedor Emelianenko and Chuck Liddell.

One of the more memorable moments of Sobral's career was at UFC 74. Sobral submitted David Heath with an anaconda choke, but wouldn't break the hold when first instructed to by the ref. He was later cut from the UFC and fined by the Nevada State Athletic Commission for his wrongdoing.

Sobral then went to Strikeforce and won the light heavyweight championship before losing it to Gegard Mousasi. He also fought in One FC, and then Bellator before he hung up his MMA gloves.

Source: http://sports.yahoo.com/blogs/mma-cagewriter/king-mo-wins-while-babalu-retires-bellator-173628309.html

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New method for achieving nonlinear optical effects: Method could be a step toward quantum computing

June 20, 2013 ? Picture two light beams intersecting one another in space. When the beams touch one another, does the light bend? Reflect? Combine into a single beam?

The answer, of course, is the light beams do nothing; they simply continue on their path. That is because in most media -- including air, water, and vacuums -- particles of quantized light beams called photons do not interact.

But in certain crystalline materials and with a powerful enough laser, it is possible to make photons interact with one another and take on a special set of characteristics. Known as nonlinear optical effects, these characteristics could be manipulated for applications in both the classical and quantum domains.

Researchers at Northwestern University have proposed a new method for realizing nonlinear optical effects that is more practical than previous methods. The results represent a step forward toward quantum computing and could also have interdisciplinary applications in areas like gravity wave detection and biological microscopy.

A paper describing the research, "Photonic Nonlinearities via Quantum Zeno Blockade," was published on May 28 in Physical Review Letters.

Realizing optical nonlinear effects at a single-photon level is highly desirable but also extremely challenging; even in very strong optical nonlinear materials, the nonlinear effect is negligible to the extent that it hardly occurs. The new methodology makes the effects much more powerful and able to be realized with regularity.

The method is based on the quantum Zeno effect, a counterintuitive phenomenon originating from the famous "arrow paradox" raised more than 2,000 years ago by the philosopher Zeno of Elea, who argued that since an arrow in flight is not seen to move during any single instant, it couldn't be moving at all. Applying this effect to realistic nonlinear optical resonator systems, the researchers found that single photons can interact strongly with each other without them ever overlapping in real space on any significant level.

The researchers propose sending light waves into a sub-millimeter-diameter disc made of a crystalline material with nonlinear properties, termed a "whispering-gallery-mode" resonator. (The term refers to enclosures, found in some cathedrals and mosques, in which sound carries along a circular wall so whispers can be clearly heard at different parts of the gallery.) A single photon could travel around the periphery of the disc, becoming so intense that it could produce a nonlinear effect sufficient to prevent additional photons from entering the resonator. The interaction between photons realized in this manner could enable "quantum gates," the building blocks of large-scale quantum circuits, on demand.

"The beauty of this method is its practicality," said Prem Kumar, AT&T Professor of Information Technology at Northwestern's McCormick School of Engineering and Applied Science and one of the paper's authors. "Existing methods to this end require complicated, extreme experimental conditions, usually involving large-volume setups and operation in near-zero-temperature environments. Ours is a sub-millimeter device that does not even require a clean room."

Other authors are Yu-Zhu Sun, a graduate student in the Department of Physics & Astronomy at Northwestern's Weinberg College of Arts and Sciences, and Yu-Ping Huang, research assistant professor of electrical engineering and computer science at McCormick.

This research was supported in part by the National Science Foundation (NSF), the Defense Advanced Research Projects Agency (DARPA) under the Zeno-based OptoElectronics (ZOE) program, and the United States Air Force Office of Scientific Research (USAFOSR).

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/~3/S8TzxMOZ4D8/130620142942.htm

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Samsung Galaxy NX mirrorless camera: hands-on with an Android ILC

After last year's Galaxy Camera, Samsung split in two directions. It went closer to the phone with the Galaxy S 4 Zoom, shrinking the form factor (and some of the specs) for something that closer approximates a pocket-friendly device, and it got serious about interchangeable-lens cameras. This is the Galaxy NX, an ILC with LTE connectivity that's capable of capturing at 8.6 fps and contains a hybrid autofocus system made by Samsung. In fact, the company says it's behind every part of this new device, from the quad-core 1.6GHz Pega-Q processor, to the 4.8-inch LCD screen, to even the shutter mechanism. With a "DSLR-class" 20.3-megapixel APS-C CMOS image sensor we've seen on other NX cameras, new DRIMe IV image processor and ISO settings from 100 to 25,600, Samsung appears to be making a serious pitch for photographers interested in more than just an Instagram hook-up. This mirrorless shooter will be compatible with the full gamut of NX lenses, currently totaling 13. We paired the Galaxy NX with its 18-55mm OIS kit lens and tested it out for a bit. Read up on our impressions after the break.

Gallery: Samsung Galaxy NX camera hands-on

Filed under: Cameras, Samsung

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Source: http://www.engadget.com/2013/06/20/samsung-galaxy-nx-camera-hands-on/?utm_medium=feed&utm_source=Feed_Classic&utm_campaign=Engadget

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A battery made of wood?

June 19, 2013 ? A sliver of wood coated with tin could make a tiny, long-lasting, efficient and environmentally friendly battery.

But don't try it at home yet -- the components in the battery tested by scientists at the University of Maryland are a thousand times thinner than a piece of paper. Using sodium instead of lithium, as many rechargeable batteries do, makes the battery environmentally benign. Sodium doesn't store energy as efficiently as lithium, so you won't see this battery in your cell phone -- instead, its low cost and common materials would make it ideal to store huge amounts of energy at once, such as solar energy at a power plant.

Existing batteries are often created on stiff bases, which are too brittle to withstand the swelling and shrinking that happens as electrons are stored in and used up from the battery. Liangbing Hu, Teng Li and their team found that wood fibers are supple enough to let their sodium-ion battery last more than 400 charging cycles, which puts it among the longest lasting nanobatteries.

"The inspiration behind the idea comes from the trees," said Hu, an assistant professor of materials science. "Wood fibers that make up a tree once held mineral-rich water, and so are ideal for storing liquid electrolytes, making them not only the base but an active part of the battery."

Lead author Hongli Zhu and other team members noticed that after charging and discharging the battery hundreds of times, the wood ended up wrinkled but intact. Computer models showed that that the wrinkles effectively relax the stress in the battery during charging and recharging, so that the battery can survive many cycles.

"Pushing sodium ions through tin anodes often weaken the tin's connection to its base material," said Li, an associate professor of mechanical engineering. "But the wood fibers are soft enough to serve as a mechanical buffer, and thus can accommodate tin's changes. This is the key to our long-lasting sodium-ion batteries."

The team's research was supported by the University of Maryland and the U.S. National Science Foundation.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/strange_science/~3/lGAYwYYOa2A/130619195221.htm

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Thursday, June 20, 2013

Ham Radio Operators demonstrate modern capabilities this weekend

Public Demonstration and Practice of Emergency Communications 11am June 22 to 11am June 23, Shoreline Fire Department, 175th and Aurora Ave N.

By Marc Weinberg

Thousands of Ham Radio operators across the US and Canada will be showing off their emergency capabilities for 24 hours June 22-23.

Over the past year, the news has been full of reports of ham radio providing critical communications in emergencies world-wide. In most cases Amateur Radio ? often called ?Ham Radio? - was often the ONLY way people could communicate, and hundreds of volunteer ?hams? traveled great distances to set up communication facilities for fire, police and other first responders to save lives and property.

When trouble is brewing, ham radio people are often the first to provide critical information and communications.

During this 24 hours, the public will have a chance to meet our Shoreline HAMS and talk with them to find out what the Amateur Radio Service is about. Showing the newest digital and satellite capabilities, voice communications and even historical Morse code, hams from across the USA and Canada will be holding public demonstrations like this event to show the public emergency communications in action.

This annual event is called "Field Day." It is sponsored by the ARRL, the national association for Amateur Radio. Using only emergency power supplies, ham operators will construct emergency stations in parks, shopping malls, schools and back yards around the country.

Their slogan, "Ham radio works when other systems don't! " is more than just words to the hams as they prove they can send messages in many forms without the use of phone systems, internet or any other infrastructure that can be compromised in?a crisis. More than 30,000 amateur radio operators across the country participated in last year's event.

Source: http://www.shorelineareanews.com/2013/06/ham-radio-operators-demonstrate-modern.html

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Mobile Call Logs Can Reveal a Lot to the NSA

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