• PFT: Ravens to hire ex-Indy coach Caldwell

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    February 1, 2012 /  hey there

    Bill Belichick9AP

    Vince Wilfork?s physique may not show it, but Patriots coach Bill Belichick says Wilfork is a great athlete who?s in great shape and one of the biggest reasons the Patriots are in the Super Bowl.

    At his press conference in Indianapolis today, Belichick praised Wilfork for making back-to-back big plays late in the fourth quarter of the AFC Championship Game, noting that Wilfork had already been on the field for more than 60 snaps at that point but still had the energy to stuff a run on third down and pressure Ravens quarterback Joe Flacco on fourth down.

    ?Late in the fourth quarter when we had to have it, the whole game was on the line, he made the plays for us,? Belichick said.

    Wilfork, who?s listed at 325 pounds and looks heavier than that, had two interceptions during the regular season, returning one for 28 yards and the other for 19 yards, and Belichick said those plays proved just how well Wilfork can run.

    ?Vince is really a good athlete, as we can see from all his interception returns and open-field running and those kind of plays,? Belichick said.

    Belichick also noted that Wilfork can play in running or passing situations and doesn?t ask to come off the field and rotate with other defensive linemen.

    ?He takes a lot of pride in not coming off the field, which I love in a defensive lineman ? that they want to be on the field and not come out,? Belichick said. ?He?s in good condition. Out there at practice today during the offensive period he?s running sprints back and forth on the field, working on his conditioning, with a week to go in the season. I think that?s a sign of his dedication.?

    The big gut that hangs over Wilfork?s waistline makes him look like something less than a great athlete, but looks can be deceiving.

    ?You can talk about his appearance ? maybe it?s not the classic appearance ? but he?s a good athlete, he?s in good shape and he works real hard,? Belichick said.

    And without Wilfork, the Patriots probably wouldn?t be in Indianapolis right now.

    Source: http://profootballtalk.nbcsports.com/2012/01/30/report-ravens-will-hire-jim-caldwell/related/

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  • Quantum computing has applications in magnetic imaging, say Pitt researchers

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    December 30, 2011 /  hey there

    Monday, December 19, 2011

    Quantum computing — considered the powerhouse of computational tasks — may have applications in areas outside of pure electronics, according to a University of Pittsburgh researcher and his collaborators.

    Working at the interface of quantum measurement and nanotechnology, Gurudev Dutt, assistant professor in Pitt’s Department of Physics and Astronomy in the Kenneth P. Dietrich School of Arts and Sciences, and his colleagues report their findings in a paper published online Dec. 18 in Nature Nanotechnology. The paper documents important progress towards realizing a nanoscale magnetic imager comprising single electrons encased in a diamond crystal.

    “Think of this like a typical medical procedure?a Magnetic Resonance Imaging (MRI)?but on single molecules or groups of molecules inside cells instead of the entire body. Traditional MRI techniques don’t work well with such small volumes, so an instrument must be built to accommodate such high-precision work,” says Dutt.

    However, a significant challenge arose for researchers working on the problem of building such an instrument: How does one measure a magnetic field accurately using the resonance of the single electrons within the diamond crystal? Resonance is defined as an object’s tendency to oscillate with higher energy at a particular frequency, and occurs naturally all around us: for example, with musical instruments, children on swings, and pendulum clocks. Dutt says that resonances are particularly powerful because they allow physicists to make sensitive measurements of quantities like force, mass, and electric and magnetic fields. “But they also restrict the maximum field that one can measure accurately.”

    In magnetic imaging, this means that physicists can only detect a narrow range of fields from molecules near the sensor’s resonant frequency, making the imaging process more difficult.

    “It can be done,” says Dutt, “but it requires very sophisticated image processing and other techniques to understand what one is imaging. Essentially, one must use software to fix the limitations of hardware, and the scans take longer and are harder to interpret.”

    Dutt?working with postdoctoral researcher Ummal Momeen and PhD student Naufer Nusran (A&S’08 G), both in Pitt’s Department of Physics and Astronomy?has used quantum computing methods to circumvent the hardware limitation to view the entire magnetic field. By extending the field, the Pitt researchers have improved the ratio between maximum detectable field strength and field precision by a factor of 10 compared to the standard technique used previously. This puts them one step closer toward a future nanoscale MRI instrument that could study properties of molecules, materials, and cells in a noninvasive way, displaying where atoms are located without destroying them; current methods employed for this kind of study inevitably destroy the samples.

    “This would have an immediate impact on our understanding of these molecules, materials, or living cells and potentially allow us to create better technologies,” says Dutt.

    These are only the initial results, says Dutt, and he expects further improvements to be made with additional research: “Our work shows that quantum computing methods reach beyond pure electronic technologies and can solve problems that, earlier, seemed to be fundamental roadblocks to making progress with high-precision measurements.”

    ###

    University of Pittsburgh: http://www.pitt.edu

    Thanks to University of Pittsburgh for this article.

    This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.

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    Source: http://www.labspaces.net/116135/Quantum_computing_has_applications_in_magnetic_imaging__say_Pitt_researchers

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