Speech silencer among Ig Nobel prize winners

Last Updated: Friday, September 21, 2012, 10:23
 
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Zeenews bureau

New Delhi: A device to make incessant talkers shut up was named Thursday as a 2012 winner of the Ig Nobel prize.

Dubbed the SpeechJammer, the portable device can disrupts a person's speech by repeating his or her own voice at a delay of a few hundred milliseconds.

The echo effect of the device is just annoying enough to get someone to sputter and stop.

The device created by Kazutaka Kurihara and Koji Tsukada is meant to help public speakers by alerting them if they are speaking too quickly or have taken up more than their allotted time.
"This technology ... could also be useful to ensure speakers in a meeting take turns appropriately, when a particular participant continues to speak, depriving others of the opportunity to make their fair contribution," said Kurihara, of the National Institute of Advanced Industrial Science and Technology in Japan.

Still, winning an Ig Nobel, an award sponsored by the Annals of Improbable Research magazine for weird and humorous scientific discoveries, in acoustics for the device's other more dubious purpose is cool too.

"Winning an Ig Nobel has been my dream as a mad scientist," he said.

As usual, the ersatz Nobels were handed out by real Nobel laureates, including 2007 economics winner Eric Maskin, who was also the prize in the "Win a Date with a Nobel Laureate" contest.

Other winners feted Thursday at Harvard University's opulent Sanders Theatre included Dutch researchers who won the psychology prize for studying why leaning to the left makes the Eiffel Tower look smaller; four Americans who took the neuroscience prize for demonstrating that sophisticated equipment can detect brain activity in dead fish; a British-American team that won the physics prize for explaining how and why ponytails bounce; and the U.S. General Accountability Office, which won the literature prize for a report about reports.

Rouslan Krechetnikov, an engineering professor at the University of California Santa Barbara, and graduate student Hans Meyer took home the fluid dynamics prize for research into the sloshing that goes on in coffee cup as it's carried.

Like many projects that have won Ig Nobels in the past, it started in a casual conversation based on everyday observations.

Krechetnikov and Meyer were taking a coffee break at a conference last year when they watched as others milled around trying to prevent staining their clothes.
The science of sloshing liquids has been studied before — in rocketry, for example, shifting weight can destabilize a missile or rocket — but no one's ever really studied coffee as it splashes around, Krechetnikov said.

"It is one of those cases where we were interested in explaining the phenomena, but not changing it," he said.

The reason coffee spills?: A person's walking speed, their mental focus and, surprisingly enough, noise.

Are there practical applications? You could design a better coffee cup by using what Krechetnikov calls "a series of annular ring baffles arranged around the inner wall of the container to achieve sloshing suppression," although those solutions are impractical.

"We just wanted to satisfy our curiosity and, given the results, to share what we learned with the scientific community through peer-reviewed literature," he said.

The 22nd annual Ig Nobels ceremony, with the theme "The Universe," featured the usual doses of zaniness, including the traditional launching of hundreds of paper airplanes and the world premiere of an opera entitled "The Intelligent Designer and the Universe," about an insane wealthy man who bequeaths his fortune to have someone design a beautiful dress for the universe.

"Personally, this goes along with my view of science," Krechetnikov said. "There should be a fun side to it."

(With Agency inputs)


First Published: Friday, September 21, 2012, 10:19

India to build world’s fastest Supercomputer:

by Sep 17, 2012

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India wants to get ahead in the technological revolution. And just how will it manage this? By building a new supercomputer that aims to be 61 times faster than IBM Sequoia, currently the world’s fastest.

According to reports, Telecom and IT Minister Kapil Sibal has written to Prime Minister Manmohan Singh sharing the roadmap to develop “petaflop and exaflop range of supercomputers” at an estimated cost of Rs 4,700 crore over 5 years.

“In his (Sibal’s) letter, he has said that C-DAC has developed a proposal with a roadmap to develop a petaflop and exaflop range of supercomputers in the country with an outlay of Rs 4,700 crore,” a government official said.

India’s attempts at making the world’s cheapest tablet, Aakash might not have been so successful thanks to in-fighting among the manufacturers and government agencies, but the government is clearly not disheartened and has moved on to bigger and more powerful projects.

India wants to win the supercomputer race. Getty Images

So what will India have to beat as far current supercomputers go? The world’s fastest supercomputer is the IBM Sequoia, which has a peak speed of 16.32 petaflops. The computer is based in Livermore, USA and consumes, nearly 7890.0 kW of electricity. According to the Top500 list, the Sequioa is one of the most energy efficient systems in the world.

But does India have a supercomputer in the current top ten list? No, India’s highest ranked supercomputer in the 2012 list is the one at CSIR Centre for Mathematical Modelling and Computer Simulation in Bangalore which is ranked at 58. You can view the entire list of supercomputers for 2012 here.

As far as rivals go, China has 2 supercomputers in the top ten list for 2012. Tianhe — 1A at the National Supercomputing Center in Tianjin was the world’s fastest super computer in 2010. The other Chinese computer in the 2012 list is Nebulae at the National Supercomputing Centre in Shenzhen which is at number 10.

Floating Operations per seconds (Flops or Flop) determines the time used by a computer to make heavy calculations. Exaflops are higher than petaflops and the Indian government claims that its five year project will be enough to build a range of supercomputers with processing speeds in petaflops and exaflops. Click here to know more about petaflops.

Hopefully this one won’t be another failed IT project and India will finally get a supercomputer in the top ten.

Berkeley Laser Fires Pulses Hundreds of Times More Powerful Than All the World’s Electric Plants Combined


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BELLA petawatt laser at LBL

BELLA laser. Credit: Roy Kaltschmidt, Lawrence Berkeley National Laboratory

Blink and you’ll miss it. Don’t blink, and you’ll still miss it.

Imagine a device capable of delivering more power than all of the world’s electric plants. But this is not a prop for the next James Bond movie. A new laser at Lawrence Berkeley National Laboratory was put through its paces July 20, delivering pulses with a petawatt of power once per second. A petawatt is 1015 watts, or 1,000,000,000,000,000 watts—about 400 times as much as the combined instantaneous output of all the world’s electric plants.

How is that even possible? Well, the pulses at the Berkeley Lab Laser Accelerator (BELLA) are both exceedingly powerful and exceedingly short. Each petawatt burst lasts just 40 femtoseconds, or 0.00000000000004 second. Since it fires just one brief pulse per second, the laser’s average power is only about 40 watts—the same as an incandescent bulb in a reading lamp.

BELLA’s laser is not the first to pack so much power—a laser at Lawrence Livermore National Laboratory, just an hour’s drive inland from Berkeley, reached 1.25 petawatts in the 1990s. And the University of Texas at Austin has its own high-power laser, which hit the 1.1-petawatt mark in 2008. But the Berkeley laser is the first to deliver petawatt pulses with such frequency, the lab says. At full power, for comparison, the Texas Petawatt Laser can fire one shot per hour.

Laser wakefield acceleration
Simulated image of laser accelerating electrons in a plasma. Credit: Cameron Geddes, LOASIS Program, at the National Energy Research Scientific Computing Center, NERSC

The Department of Energy plans to use the powerful laser to drive a very compact particle accelerator via a process called laser wakefield acceleration, boosting electrons to high energies for use in colliders or for imaging or medical applications. Electron beams are already in use to produce bright pulses of x-rays for high-speed imaging. An intense laser pulse can ionize the atoms in a gas, separating electrons from protons to produce a plasma. And laser-carved waves in the plasma [blue in image at right] sweep up electrons [green], accelerating them outward at nearly the speed of light.

BELLA director Wim Leemans says that the project’s first experiments will seek to accelerate beams of electrons to energies of 10 billion electron-volts (or 10 GeV) by firing the laser through a plasma-based apparatus about one meter long. The laser apparatus itself is quite a bit larger, filling a good-size room [see top photo]. For comparison, the recently repurposed Stanford Linear Accelerator Center produced electron beams of 50 GeV from an accelerator 3.2 kilometers in length.

About the Author: John Matson is an associate editor at Scientific American focusing on space, physics and mathematics. Follow on Twitter @jmtsn.