From Engadget: NPR Music iPad app puts Tiny Desk Concerts a few swipes away

Feel like peeping a live performance from The Decemberists during your coffee shop work session? You can do just that via the new NPRMusic app for your iPad. Once you download the free software onto your Apple slate, you’re a few screen taps away from live performances, advance album listens and live streaming radio content. The app also enables offline listening through its visual playlist feature. If you’re a fan of The Shins, an exclusive in-app concert streams live on March 7th. Itching to snag the app for your tablet? Hit the iTunes source link below.

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from Engadget

From Engadget: GE turns butterfly-inspired tech into cheap, accurate thermal sensors

GE butterfly sensor

When last we heard from GE and its Morpho-butterfly inspired sensors, all the talk was about detecting chemicals. And, with $6.3 million in funding coming from DARPA, we’re not surprised. In the latest issue of Nature Photonics, however, the company’s researchers show that the wing-like structures are just as good at detecting heat as they are ricin attacks. By coating them with carbon nanotubes the team was able to create a sensor sensitive to temperature changes as small as 0.02 degrees Celsius with a response rate of 1/40 of a second. The sensors could eventually find their way into imaging devices and medical equipment, and are expected to cost just a fraction of similar technologies currently on the market. Of course, since DARPA is still involved with the project, there are some potential security uses as well — such as screening devices and fire detection. Head after the break for a video and some PR.

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from Engadget

From Ars Technica: Happy Valentine’s Day: US government breaks up with LightSquared


The Federal Communications Commission (FCC) said today that it will not approve LightSquared’s proposal to build a national 4G-LTE network, after testing showed that the network would interfere with most existing GPS devices.

The decision came swiftly after the National Telecommunications and Information Administration (NTIA) today warned the FCC that “LightSquared’s proposed mobile broadband network will impact GPS services and that there is no practical way to mitigate the potential interference at this time.” The FCC responded by indefinitely suspending LightSquared’s conditional waiver to operate the network, the Washington Post and others are reporting. The FCC will also issue a public notice on Wednesday seeking comment on the NTIA’s conclusions. The conditional waiver had been issued in January 2011.

LightSquared proposed to build an open-access, wholesale wireless broadband network integrating satellite and terrestrial technology, but government testing showed that the network would harm performance of 75 percent of GPS devices. GPS makers and the airline industry (which is building a GPS-based navigation system) were among numerous groups objecting to the plan, raising pressure on the FCC to block it. LightSquared can still fight on, but the NTIA recommendation and subsequent FCC decision dramatically reduce its chances of final success.

LightSquared controls spectrum originally intended for satellite communication, and wants approval to use it for terrestrial broadband service. The spectrum is adjacent to that used by GPS, and GPS makers complain the LightSquared signals will be so powerful they would cause widespread jamming of GPS devices. LightSquared has long insisted that the problem lies with the GPS community, which should have to redesign its receivers.

LightSquared has renewed its bitter complaints that the GPS industry has become “too big to fail” and is being protected by government even though its receivers often don’t filter frequencies properly and “listen” on adjacent spectrum, including that now held by LightSquared.

“You can get a cell phone for free with a two-year contract that is more resilient to GPS interference than what’s being installed in today’s commercial airliners,” the company said, though it pledged to keep working on a solution.

“This proceeding has revealed challenges to maximizing the opportunities of mobile broadband for our economy,” the FCC said in a statement. “In particular, it has revealed challenges to removing regulatory barriers on spectrum that restrict use of that spectrum for mobile broadband. This includes receivers that pick up signals from spectrum uses in neighboring bands. There are very substantial costs to our economy and to consumers of preventing the use of this and other spectrum for mobile broadband. Congress, the FCC, other federal agencies, and private sector stakeholders must work together in a concerted effort to reduce regulatory barriers and free up spectrum for mobile broadband. Part of this effort should address receiver performance to help ensure the most efficient use of all spectrum to drive our economy and best serve American consumers.”

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from Ars Technica

From Popular Science: Machine Can Tell If Plants’ Genes Are Modified By Watching Them Grow

Germinating Seedlings Phytomorph

Watching a plant grow and develop roots can be as tedious as … watching a plant grow. But seeing plant development as it unfolds can expose just what happens to a genetically modified organism, and how certain gene expressions can make plants do certain things. Robotic cameras and machine-vision algorithms are making the process easier.

Plant physiologist Edgar Spalding at the University of Wisconsin-Madison creates time-lapse movies of plant root growth in action. A 2,300-pound, 6-foot-high robotic camera rig snaps pictures every 30 seconds, capturing the curling, twisting motion of germinating seeds putting out new roots. The National Science Foundation, which funds Spalding’s lab, paid a visit and got a tour.

Genetically modifying a seed is a complex process on its own, but plant biologists also need to study the physical changes, comparing how genetically modified plants grow in relation to their wild-type brethren. This can take quite some time, so Spalding’s lab focuses on building high-throughput data analysis tools, including the camera and specialized algorithms.

Like other plant research labs, the Phytomorph lab is an impressively high-tech operation, with the research subject lending a greenhouse-like casual air. Tiny plants germinate and rotate their root systems in petri dishes inside a Plexiglas wall that resembles a giant Connect Four game. Each plant grows under white LEDs, and infrared LEDs are used to illuminate the CCD imager on the robotic camera.

Computer vision algorithms study the camera’s time-lapse videos and measure the sizes of seeds, plants’ cellular growth rates, the angle and curvature of the roots, and more.

The main goal is to study how genes function, according to the NSF. The Phytomorph program has led to some new insights about how plant roots grow, including how they grow facing down, growing with gravity. All of this could be useful in pinpointing genes that botanists and plant biotechnologists would want to exploit, creating plants with tougher roots, or roots that could more easily seek out water and nutrients.

“It lays the foundation for discoveries that will help improve plants for human purposes,” Spalding told the NSF.

[National Science Foundation]

from Popular Science