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by
timothy
from the back-to-school-special dept.
An anonymous reader writes "Professors at the Ohio State University are embracing MOOCs, with a Massive Open Online Calculus Course — it is completely open source; everything is on github. There is are free videos, free online assessment system, and a free textbook!"
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Soulskill
from the umpires-in-agreement-after-further-review dept.
sciencehabit writes "In theory, so-called quantum cryptography provides a totally secure way of sending information. In practice, maybe not. But now physicists have demonstrated how to close a technological loophole that could have left secrets open to eavesdroppers. '[I]n 2010, an international team of researchers showed that [an attacker] could hack the system by exploiting a weakness in the so-called avalanche photodiodes (APDs) used to detect the individual photons. The problem is that APDs react differently to intense pulses of light than they do to single photons, so that the energy of the pulse must exceed a threshold to register a hit. As a result, all [the attacker] has to do is intercept the single photons, make her best-guess measurements of their polarizations, and send her answers off to Bob as new, brighter pulses. ... Last year, physicist Hoi-Kwong Lo at the University of Toronto and colleagues claimed to find a way around the problem. In the new protocol, Alice and Bob would begin the creation of a quantum key by sending randomly polarized signals to Charlie, a third party. Charlie would measure the signals to determine not their actual polarization, but only whether the polarizations were at right angles. ... Now, in papers in press at Physical Review Letters, two independent groups of physicists have shown that the new protocol works.'"
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Soulskill
from the at-roughly-10-meters-per-second-squared,-or-so dept.
ananyo writes "In 2011, Romania took a step towards changing its cronyism-ridden research landscape by allocating government grants for science solely on the basis of performance. In 2012, a new government eliminated those rules, then slashed science funding — and since then things have gotten a whole lot worse. The entire National Research Council, Romania's main research-funding agency, has resigned in protest and 900 scientists signed a petition addressed to Prime Minister Victor Ponta, demanding that the research budget and quality control be restored. Ponta himself unfortunately has been accused of academic plagiarism so seems an unlikely figure to address corruption in the scientific establishment. The new science minister, Ecaterina Andronescu, is experienced — she's held the post twice before and is a rector at the Polytechnic University of Bucharest. But she's already reversed conflict of interest rules brought in by the previous government that were designed to end cronyism. And no wonder — they would have meant that she couldn't be science minister and run a university at the same time. Oh, she has also been accused of plagiarism."
Posted
by
Soulskill
from the a-rising-tide-lifts-all-boats-and-all-houses-and-oh-god-run dept.
waderoush writes "What do Google, Facebook, Yahoo, Oracle, LinkedIn, and Intuit have in common? They're just a few of the tech companies whose campuses alongside San Francisco Bay could be underwater by mid-century as sea levels rise. It's time for these organizations and other innovators to put some of their fabled brainpower into coming up with new ideas to counter the threat, Xconomy argues today. One idea: the Golden Gate Barrage, a massive system of dams, locks, and pumps located in the shadow of the iconic bridge. Taller than the Three Gorges Dam in China, it would be one of the largest and costliest projects in the history of civil engineering. But at least one Bay Area government official says might turn out to be the simplest way to save hundreds of square miles of land around the bay from inundation."
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by
Soulskill
from the makes-a-break-for-mons-olympus dept.
Zothecula writes "NASA took the metaphorical training wheels off the Mars rover Curiosity on Tuesday, as the unmanned explorer took its first drive using autonomous navigation. It used its onboard cameras and software to select and drive over an area of ground that mission control at the Jet Propulsion Laboratory in Pasadena, California couldn't see and vet beforehand. This capability allows the nuclear-powered rover to negotiate the most direct route to Mount Sharp rather than having to detour to find routes that can be seen directly by Curiosity before entering, so they can be analyzed by mission control."
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by
samzenpus
from the what-the-market-will-bear dept.
MarkWhittington writes "Neil deGrasse Tyson, the famous astrophysicist and media personality, offered something of a reality check on the potential of commercial enterprises to open the space frontier without the aid of government. Specifically referencing SpaceX's CEO Elon Musk's boast that he would establish a Mars colony, Tyson said on a recent video podcast, 'It's not possible. Space is dangerous. It's expensive. There are unquantified risks. Combine all of those under one umbrella; you cannot establish a free market capitalization of that enterprise.'"
