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Comment Re:Neural Networks (Score 1) 56

It looks like someone else has taken tech like that and done something geared toward finding biomedical applications for it. The ideas and experiments in this abstract could perhaps be useful as a building block for some sort of basic tricorder. Reading the body's reaction to drugs and stress, screening neuropsych deficits, and possibly lots more by just simply scanning them with one single machine? That's Star Trek stuff.

Comment Neural Networks (Score 1) 56

I wonder if part of how they did this used human game play to train a neural network. A quick google of the idea makes it seem like that is plausible and has been done in at least one study, but I don't know if it is a widely used AI technique or not.

Comment Re:It's already out there... (Score 0) 622

I think the people committing the violence are primarily to blame, but possibly not all. Whether or not any blame falls to those that made the film depends on their intent -- whether or not they were *hoping* for this to happen, based on the reaction seen after the Mohammed cartoon was published in the Netherlands. Reactions like this could aid their cause of trying to make people think muslims are the enemy of Judaism and Christianity. The question is whether the filmmakers are just idiots who want to run around yelling "fundamentalist islam bad, fundamentalist judeo-christianity good!", or if they are depraved enough to be hoping to incite violence to achieve their end of trying to convince people of what they are yelling.

None of this should be taken to mean that that the biggest moral failing here isn't with the people that resorted to violence in response to something someone said, but if the filmmakers were intentionally encouraging that sort of evil to occur, then they were being evil themselves.

Comment Re:Wow. (Score 5, Informative) 370

If you look at TFA, the record low that was just surpassed was set between 2006 and 2009. The records only go back to 1979, but the previous record low was not set in 1979; rather, the trend has been downwards ever since the satellite observations began.

Comment Re:Doesn't know much about the system (Score 2) 141

I'd give you about 15 minutes before you had military on your ass.

Considering that the military didn't really manage to do anything useful in the 34 minutes that elapsed between the second plane hitting the WTC and the Pentagon being struck on 9/11, I have my doubts about that estimate.

Comment Re:Impressive! (Score 1) 144

if this man really was using dynamite to fish, it sounds like he got hold of one with a very fast burning fuse, which happens when the sticks get old. He is lucky to be alive at all.

I've had enough experience with firecrackers that have fast fuses -- fast fused dynamite just sounds bad.

Comment Re:Headline should say... (Score 1) 786

You misunderstand the nature of chaotic attractors such as the weather/climate system. The shape of a chaotic attractor defines the range of possible states that a system can take on. The dynamical evolution of a trajectory in the system from one state to another is chaotic, which limits predictability, but no such limitation on predictability necessarily exists for changes in the shape of the attractor itself.

Weather corresponds to a trajectory evolving on the attractor, and is thus difficult to impossible to predict on long time scales. Climate, however, corresponds to the shape of the attractor itself, so predicting evolution in the climate is a different problem than predicting the weather, and is not necessarily subject to the same limitations.

Consider the Lorenz attractor (http://en.wikipedia.org/wiki/Lorenz_system) as a simplified example: Weather prediction is analogous to predicting x(t),y(t), and z(t), while climate prediction is analogous to predicting changes in sigma, rho, and beta. In the simplified example of the Lorenz system, even though x, y, and z are unpredictable, sigma, rho, and beta are trivial to predict -- they are constant!

Obviously, the constant parameters that define the shape of the Lorenz attractor are an oversimplified analogy for the climate problem, since we at the very least know that that climate varies, but the lesson to draw from that example is that the predictability of weather is unrelated to the predictability of climate.

Comment Re:black guy in the white house just too much for (Score 1) 484

Did you even bother to read the GP's post before replying to it? He dislikes the tea party and agrees that this unconstitutional stuff has been going on for decades. His only complaint about Obama is that it has continued and in some ways worsened under his watch. How in the world does that makes him a racist? Oversensitive much?

I have no doubt there are many people that dislike Obama for stupid reasons like the fact that he's black. Those people are idiots. Disliking him because he is taking liberties with the rule of law, however, isn't any less legitimate or reasonable than it was with white presidents.

Comment Re:But... WHY? (Score 1) 648

OTOH, if the new guys get money fast enough, and start sending some of that money to DC, we might see some real competiton here (which will surely be the death of cable as the decades pass).

So, capitalism fails either way? I don't think "companies must lobby the government simply to be allowed to compete" sounds that much like capitalism. Unless you simply mean paying taxes, but that never seems to grant anyone the sort of treatment big media currently gets.

Comment Re:No hidden mechanism (Score 2) 465

Partly correct. It's been years since I've had a QM class, so I'd have to dig through the wiki page for details, but Bell's Theorem states that no *local* hidden variable theory offers as complete a description of reality as traditional QM. Apparently, testable predictions can be drawn from the theorem, and so far none of the experiments done have contradicted it (although it may be rather early to call it confirmed, based on a quick look at the wiki page). In any case, none of this says anything about the possible existence of *non-local* hidden variable theories. A local hidden variable theory (IIRC) could render QM non-weird from a classical standpoint, but part of the usual QM weirdness is non-locality, so it currently appears we will be stuck with some sort of strangeness even if we find a more complete version of QM.

Submission + - Gamma Ray Bursts Possibly Ruled Out As Source Of Ultra-Energetic Cosmic Rays (csmonitor.com)

steppedleader writes: Scientists at the IceCube Neutrino Observatory have possibly ruled out gamma-ray bursts as the source of ultra-high-energy cosmic rays. From an article in the Christian Science Monitor about the observations:
"The investigators focused on neutrinos whose energy levels suggest they are linked with gamma-ray bursts. The fireballs that give rise to the gamma rays seen in gamma-ray bursts were thought to potentially hurl particles at very high energies, generating both cosmic rays and energetic neutrinos. After analyzing data on 307 gamma-ray bursts in 2008 and 2009, the scientists discovered the levels of these neutrinos were at least 3.7 times lower than expected. This suggests gamma-ray bursts are probably not the sources of the most powerful cosmic rays."
The cosmic rays in question are notable because their energies can be beyond the Greisen–Zatsepin–Kuzmin limit, our current theoretical upper limit for the cosmic ray energies.

Space

Submission + - New Study Finds Mysterious Lack of Dark Matter in Sun's Neighbourhood (scienceworldreport.com)

fishmike writes: "The most accurate study so far of the motions of stars in the Milky Way has found no evidence for dark matter in a large volume around the Sun. According to widely accepted theories, the solar neighbourhood was expected to be filled with dark matter, a mysterious invisible substance that can only be detected indirectly by the gravitational force it exerts. But a new study by a team of astronomers in Chile has found that these theories just do not fit the observational facts. This may mean that attempts to directly detect dark matter particles on Earth are unlikely to be successful."
Hardware

Submission + - Physicists detect elusive orbiton by 'splitting' electron (nature.com)

ananyo writes: Condensed-matter physicists have managed to detect the third constituent of an electron — its 'orbiton'.
Isolated electrons cannot be split into smaller components, earning them the designation of a fundamental particle. But in the 1980s, physicists predicted that electrons in a one-dimensional chain of atoms could be split into three quasiparticles: a ‘holon’ carrying the electron’s charge, a ‘spinon’ carrying its spin and an ‘orbiton’ carrying its orbital location.
In 1996, physicists split an electron into a holon and spinon. Now, van den Brink and his colleagues have broken an electron into an orbiton and a spinon (abstract).
Orbitons could also aid the quest to build a quantum computer — one stumbling block has been that quantum effects are typically destroyed before calculations can be performed. But as orbital transitions are extremely fast, encoding information in orbitons could be one way to overcome that hurdle.

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