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Comment: Re:Self-justification (Score 2) 49

by Carnildo (#47479953) Attached to: New Map Fingers Future Hot Spots For U.S. Earthquakes

Starting on page 12 of the report is a series of maps showing the changes since the 2008 report. Of note:

* The South Carolina seismic zone has been displaced southward by about 50 miles.
* The New Madrid zone has changed shape, with some areas seeing a substantial reduction in estimated earthquake risk.
* The risk zones in California are more sharply defined.
* The risk for the central Rocky Mountains area is higher, but still relatively low.
* The earthquake risk estimate for coastal Oregon has been reduced.
* A new seismic zone is present in Oklahoma, reflecting whatever is causing the massive increase in earthquake rates there.

Comment: Re:A Century Ago (Score 1) 194

by Carnildo (#47479015) Attached to: The Improbable Story of the 184 MPH Jet Train

The majority of passenger trips in the US are either less than 50 miles, or more than a thousand, with almost nothing in between. At the short end, the flexibility of car travel beats the cost reduction of rail; at the long end, the speed of air travel beats rail.

The only exception to this is the BosWash area, where -- guess what? -- Amtrak is able to provide profitable rail service. It's not motivation that keeps the US from having good passenger rail service, it's geography.

Comment: Re:LibreSSL cannot be different by being the same (Score 5, Informative) 151

by Carnildo (#47472309) Attached to: LibreSSL PRNG Vulnerability Patched

The random number generator should not be seeded only by a PID.

The PID is used as an absolute last-ditch fallback in the case that no other sources of randomness are available. In order for this to happen, /dev/urandom needs to be inaccessible, the KERN_RANDOM sysctl needs to be unavailable, gettimeofday() needs to fail, and clock_gettime() needs to fail.

If you're running on a system that crippled, you've really only got two choices: try seeding using the PID, or use an unseeded RNG. Or follow Theo's advice and get yourself a real operating system.

Comment: Re:And this doesn't seem like a bad idea? (Score 2) 105

by Carnildo (#47411171) Attached to: Mapping a Monster Volcano

Soviets made a safety experiment with a nuclear reactor in Chernobyl. It didn't go wrong at all.

Correct. The 1982, 1984, and 1985 tests of using rotational energy of the turbines to power the emergency pumping system all went just fine. The 1986 disaster happened when the operator ignored the test procedure (specifically, the instruction "Reduce reactor thermal output to between 700MW and 800MW. If reactor thermal power output drops below 700MW, abort test and shut down reactor" -- the operator reduced the power to 30MW, raised it to 200MW, and attempted to perform the test).

Comment: Re:ok (Score 2) 78

More significantly, if you see left-to-right motion and say "forward", what percentage do you get right? I suspect there's a bias in videos towards left-to-right motion of subjects (or conversely, right-to-left motion of backgrounds), and I don't see anything in the paper about controlling for it.

Image

A Physicist Says He Can Tornado-Proof the Midwest With 1,000-Foot Walls 501 Screenshot-sm

Posted by samzenpus
from the up-against-the-wall dept.
meghan elizabeth writes: Temple physicist Rongjia Tao has a utopian proposal to build three massive, 1,000-foot-high, 165-foot-thick walls around the American Midwest, in order to keep the tornadoes out. Building three unfathomably massive anti-tornado walls would count as the infrastructure project of the decade, if not the century. It would be also be exceedingly expensive. "Building such walls is feasible," Tao says. "They are much easier than constructing a skyscraper. For example, in Philadelphia, the newly completed Comcast building has about 300-meter height. The wall with similar height as the Comcast building should be much easier to be constructed." Update: 06/28 04:14 GMT by T : Note: originally, this story said that Tao was at Drexel rather than Temple -- now corrected

Comment: Re:Dishonourable Mentions (Score 1) 133

by Carnildo (#47302371) Attached to: The Revolutionary American Weapons of War That Never Happened

Would it have changed the course of warfare? A bouncing bomb that worked at sea would have rendered virtually all navies obsolete.

You know what else can lift a ship and break its back? A torpedo with a magnetic fuse. Oddly enough, torpedo bombers don't appear to have rendered the world's navies obsolete.

Comment: Re:Old bible scolars (Score 1) 190

by Carnildo (#47233575) Attached to: New Evidence For Oceans of Water Deep In the Earth

Another candidate is the filling of the Persian Gulf: it wouldn't have been as abrupt as the proposed Black Sea deluge (taking years rather than days), but during the last Ice Age, the Gulf would have been prime agricultural land, at least as good if not better than Mesopotamia. There's a decent chance that there was a civilization there, where the Black Sea would likely have been nomadic tribes.

Comment: Re:"malicious server" (Score 1) 127

by Carnildo (#47159723) Attached to: GnuTLS Flaw Leaves Many Linux Users Open To Attacks

Sorta important - there's not much popular software that uses GNUTLS, but wget is one of them. Since it's almost always used as a client, it's probably wise to use curl -O against unknown servers, until they get this straightened out.

wget can be built against OpenSSL, and curl can be used with GnuTLS.

Comment: Re:Something Doesn't Smell Right (Score 1) 462

by Carnildo (#47079889) Attached to: Fiat Chrysler CEO: Please Don't Buy Our Electric Car

How much did it cost to setup their infrastructure to produce these cars? It seems like it would be a loss if they don't sell any at all. Why wouldn't they raise the price?

The electric Fiat shares probably 90% of its parts and most of an assembly line with the gas-powered Fiat 500; it's the remaining 10% (particularly the batteries) that make the 500e so expensive to produce. California clean-air laws require Fiat to sell a certain number of electric cars if they want to do business in California and restrict how much Fiat can mark up the price of the electric version. If Fiat can't get the parts needed for less than the permissible markup, they're required to sell the cars at a loss.

Comment: Re:Dear Timothy (Score 1) 76

by Carnildo (#46964635) Attached to: Milwaukee City Council Proposal Would Pave Way For Uber, Lyft

That aside, both the passenger and the driver are aware of the optimal route

The passenger is aware of what his smartphone thinks is the optimal route.

Consider going from the Spokane airport to the Lakeside area: Google Maps routes you via I-90 and the Maple Street Bridge, but during rush hour, this is a wonderful place to run up the meter, with delays of 10-30 minutes on a 30-minute trip. Going via the Sunset Highway instead avoids much of the traffic (and cuts a quarter-mile off the meter), but to someone who's not a local, it looks like you're being dragged off into the middle of nowhere to be mugged, or at least ripped off on the taxi fare.

Now, as someone from out of town, how are you going to judge if the driver is telling you the truth about why he's going somewhere your smartphone doesn't want him to?

Comment: Re:Dear Timothy (Score 1) 76

by Carnildo (#46964149) Attached to: Milwaukee City Council Proposal Would Pave Way For Uber, Lyft

what is it you think is the problem? what do you think will surface? please no snark, I'm genuinely curious.

1) Drivers deliberately taking sub-optimal routes to run up the meter.
2) Drivers putting in too many hours a day, leading to an increased accident rate.
3) Drivers using the cheapest cars they can buy/skimping on maintenance to keep their costs down.
4) Drivers extorting passengers to pad their income ("An extra $20 off the books, and I won't take the scenic route").
5) Drivers refusing to take people to low-profit destinations ("Take you out there? The hour I'd spend getting back to the city for my next fare would eat my profits for the week")

FORTRAN is a good example of a language which is easier to parse using ad hoc techniques. -- D. Gries [What's good about it? Ed.]

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