...The reason is nothing more than politics. And it would seem the ultra-liberal politicians of CA and NYC/MA aren't any better at adopting mass transit....
Actually, New York City and Boston are two cities in the US where a large number of people DO use public transportation. The NY Subway and the Boston T are both old and both in need of upgrading, but they are both in every day use by ordinary people. If you want to list liberal cities that don't have good public transportation, I'd go with LA and Seattle.
(Although, to be fair, LA actually does have a metro, IF you happen to live near a stop and only want to go somewhere near a stop.)
The problem is that CNTs are strong enough, if manufactured perfectly. Flaws in the manufacturing process, even ones that lead to only a few atoms being misaligned, reduce tensile strength by 100x or more.
Not clear. The predicted high ultimate strength of nanotubes is entirely theoretical, it has yet to be experimentally demonstrated.
Carbon nanotubes are strong enough in an idealized theory that doesn't allow bonds to shift. If you include the fact that the hexagonal rings spontaneously shift the bonds to form pentagonal rings or heptagonal rings under stress, they don't reach that ideal strength. It's not clear that you can stabilize the hexagon only structure.
AFAIK, they still haven't done the tests ti show that carbon nanotubes are actually strong enough to be used for the elevator cable ? Anyone know if/when those tests will be done ?
They've done tests to show that carbon nanotubes are NOT actually strong enough to be used for the cable.
But there may be variant materials that solve the problem.
Space Elevators are from 1960, Anime is from 1917. (But yeah I know what you meant, the Space Elevators in Anime are newer than Space Elevators in scientific texts)
So Konstantin Tsiolkovsky had nothing to say in 1895?
He had a lot to say. But his thought experiment was a tower, not a tether.
A ten meter tether is not a space elevator, and is not really anything like a space elevator.
Twenty kilometer tethers have already been demonstrated in space, notably the NASA Small Expendable Deployer System Experiments (SEDS and SEDS II): http://www.daviddarling.info/e...
A PV cell is practically a large-surface diode. Guess what a microwave power receiver is in practice? Basically a rectifier.
I should sign my comments with my affiliation, maybe people won't try to teach me grade school semiconductor device physics.
Rectennas need FAST diodes with low turn-on voltage, so they're usually a Schottky diode. Photovoltaic cells are exactly the opposite: they need long minority carrier lifetime, so they aren't fast, and they need as high an open circuit voltage as possible, meaning a high turn-on voltage. Nobody uses Schottkys for solar cells. And microwave rectenna diodes need to be as small area as possible, you want high current density to turn on. Solar cells are large area.
A good diode for a microwave rectifier would be a lousy solar cell, and vice verse.
It's possible to deliberately make a solar panel which can receive both microwaves and light.
photovoltaic and microwave receivers use different technology. It may be possible to co-locate a microwave rectenna array on top of a solar array, but they won't be the same receiver, just two receivers in the same place.
But I wonder if it's possible to make a solar panel which doesn't receive microwaves...
Sure. Put a transparent conductor on the surface. Fine-mesh chicken-wire would do.
More than a tenth have moved to North American universities and nearly a tenth are currently working for other smaller US companies. Meanwhile just one in seven have joined British start-ups.
So, 10% have sought employment with American firms. and a little over 14% are working for British firms?
Nope. A little over 14% are working for British startup firms. The number that are working for British firms which aren't start-ups is not listed here.
Nintendo is just not thinking here. Basically, volunteers are working for them for free to create value that they can reap... and they want to shut them down?
The internet is the source of all knowledge, true and false. We'd once thought that by giving people access to both in the marketplace of ideas, with no gatekeepers, the "true" would drive out the false.
We're now realizing, however, that this may not be the case. The false can drive out the true, because it can be crafted to play to people's wants and needs and prejudices.
To me, autonomous flying is a lot easier than driving.
In some ways. However, several things make it harder.
1. Any problem is likely to be a fatal problem. Airplanes don't have "fender benders."
2. Three dimensions are a lot harder than two. (And cars actually only have one and a half directions of mobility-- you can't drive sideways).
In addition, for airplanes (but not 'copters): you can't stop. In a car, if you're not sure what to do, you can just stop and wait for traffic to clear. Airplanes fall if they stop.
The line "For over a year, the Chinese government has withheld lab samples of a rapidly evolving influenza virus from the United States" says the virus comes from the United States. What they mean is "For over a year, the Chinese government has withheld from the United States lab samples of a rapidly evolving influenza virus."
This is kind of disturbing. In the developed world, Facebook is something you get to on the internet. In these developing markets, though, Facebook plans to be the internet.
You make it sound like all these different ballots are only put there to frustrate the voter;
No, I'm sure that frustrating the voters is not the purpose, merely an unintended side effect.
they are there as required by law and because that is the point of voting. Barring the national election races, each state, county, city has their own elections of officials. That doesn't include any special districts the voter may reside. Now, to simplify the ballot, there could be multiple separate elections but that require organization and cost by the local authorities. The other thing that you are ignoring is that no one is required to vote on all the ballot measures. Some people vote on the elections they care about and ignore the rest. The vote is only counted as long one ballot is filled.
Uh, did you actually just tell me that democracy works fine if most people didn't bother to vote for most of the elections because it's too hard?
You do realize that what this means is that special interest groups-- for whom the minor issue and "unimportant" candidates are important-- dominate the results.
In your example, you state that Dixville Notch publishes their results immediately after their polls close. That is echoing exactly what I said. They don't publish "preliminary" results before the polls close; they wait until the polls close and publish their results.
Other polls in other places may still be open, yes.
If the polls don't close until 8, they often publish preliminary results before the polls close.
No, news media could publish exit poll results, but actual voting results--even preliminary results--aren't released until polls close. (And reputable news sources don't even publish exit poll results until the polls close.).
But... if you can hack into the election website, it doesn't matter that the people running the website don't release results until the polls close, because they're not running the website. So you could publish anything you want any time you want.
Yep. Nevertheless, the article cited shows some pretty shocking stuff:
"We've looked at poor voting security in the state previously. In 2017, a report by a Georgian security researcher revealed a shocking lack of security throughout the state's voting system. Later that year, we discovered that servers that were thought to be key evidence for the same federal lawsuit that has led to this week's news were wiped, then repeatedly degaussed."
I'm a little disturbed that in response to a federal lawsuit over election results, the people running the election destroyed the evidence including the backup servers. This, I would think, should be obstruction of justice, and definitely contempt of court. (Not to mention violation of the Georgia State law on record retention.)
Slashdot Mirror
I'd be interested in a citation, although I know that this is too much to ask from an anonymous coward.
...The reason is nothing more than politics. And it would seem the ultra-liberal politicians of CA and NYC/MA aren't any better at adopting mass transit....
Actually, New York City and Boston are two cities in the US where a large number of people DO use public transportation. The NY Subway and the Boston T are both old and both in need of upgrading, but they are both in every day use by ordinary people. If you want to list liberal cities that don't have good public transportation, I'd go with LA and Seattle.
(Although, to be fair, LA actually does have a metro, IF you happen to live near a stop and only want to go somewhere near a stop.)
The problem is that CNTs are strong enough, if manufactured perfectly. Flaws in the manufacturing process, even ones that lead to only a few atoms being misaligned, reduce tensile strength by 100x or more.
Not clear. The predicted high ultimate strength of nanotubes is entirely theoretical, it has yet to be experimentally demonstrated.
Carbon nanotubes are strong enough in an idealized theory that doesn't allow bonds to shift. If you include the fact that the hexagonal rings spontaneously shift the bonds to form pentagonal rings or heptagonal rings under stress, they don't reach that ideal strength. It's not clear that you can stabilize the hexagon only structure.
https://www.newscientist.com/article/2093356-carbon-nanotubes-too-weak-to-get-a-space-elevator-off-the-ground/
AFAIK, they still haven't done the tests ti show that carbon nanotubes are actually strong enough to be used for the elevator cable ?
Anyone know if/when those tests will be done ?
They've done tests to show that carbon nanotubes are NOT actually strong enough to be used for the cable.
But there may be variant materials that solve the problem.
Space Elevators are from 1960, Anime is from 1917. (But yeah I know what you meant, the Space Elevators in Anime are newer than Space Elevators in scientific texts)
So Konstantin Tsiolkovsky had nothing to say in 1895?
He had a lot to say. But his thought experiment was a tower, not a tether.
A ten meter tether is not a space elevator, and is not really anything like a space elevator.
Twenty kilometer tethers have already been demonstrated in space, notably the NASA Small Expendable Deployer System Experiments
(SEDS and SEDS II): http://www.daviddarling.info/e...
More important, though, is whether it can NOT predict landslides before they DON'T happen.
low rate of false positives is also important
A PV cell is practically a large-surface diode. Guess what a microwave power receiver is in practice? Basically a rectifier.
I should sign my comments with my affiliation, maybe people won't try to teach me grade school semiconductor device physics.
Rectennas need FAST diodes with low turn-on voltage, so they're usually a Schottky diode. Photovoltaic cells are exactly the opposite: they need long minority carrier lifetime, so they aren't fast, and they need as high an open circuit voltage as possible, meaning a high turn-on voltage. Nobody uses Schottkys for solar cells. And microwave rectenna diodes need to be as small area as possible, you want high current density to turn on. Solar cells are large area.
A good diode for a microwave rectifier would be a lousy solar cell, and vice verse.
It's possible to deliberately make a solar panel which can receive both microwaves and light.
photovoltaic and microwave receivers use different technology. It may be possible to co-locate a microwave rectenna array on top of a solar array, but they won't be the same receiver, just two receivers in the same place.
But I wonder if it's possible to make a solar panel which doesn't receive microwaves...
Sure. Put a transparent conductor on the surface. Fine-mesh chicken-wire would do.
More than a tenth have moved to North American universities and nearly a tenth are currently working for other smaller US companies. Meanwhile just one in seven have joined British start-ups.
So, 10% have sought employment with American firms. and a little over 14% are working for British firms?
Nope. A little over 14% are working for British startup firms. The number that are working for British firms which aren't start-ups is not listed here.
Nintendo is just not thinking here. Basically, volunteers are working for them for free to create value that they can reap... and they want to shut them down?
Unless there's more than is in the summary, the headline should read "Microsoft does not Acknowledge Windows 0-day Bug Published on Twitter".
The internet is the source of all knowledge, true and false. We'd once thought that by giving people access to both in the marketplace of ideas, with no gatekeepers, the "true" would drive out the false.
We're now realizing, however, that this may not be the case. The false can drive out the true, because it can be crafted to play to people's wants and needs and prejudices.
This is a problem. Does it have a solution?
Wherever did the "intensive purposes" misspelling come from, anyway? Never saw it before I started reading /.
Answering that question will cost you a nominal egg.
I admit to not really fully reading the article, but I didn't see any actual data that backs up the claim that reading is down...
ROFL!
p>Sometimes you actually need a wall of text to fully convey your idea or concept.
Yes, but the title needn't fully convey the idea or concept (if it did, you wouldn't even need the article, just the title).
the title only conveys what the article is going to be about.
Short titles
make it snappy
so the readers
all are happy.
-----------------------Burma Shave
To me, autonomous flying is a lot easier than driving.
In some ways. However, several things make it harder.
1. Any problem is likely to be a fatal problem. Airplanes don't have "fender benders."
2. Three dimensions are a lot harder than two. (And cars actually only have one and a half directions of mobility-- you can't drive sideways).
In addition, for airplanes (but not 'copters): you can't stop. In a car, if you're not sure what to do, you can just stop and wait for traffic to clear. Airplanes fall if they stop.
The line "For over a year, the Chinese government has withheld lab samples of a rapidly evolving influenza virus from the United States" says the virus comes from the United States. What they mean is "For over a year, the Chinese government has withheld from the United States lab samples of a rapidly evolving influenza virus."
This is kind of disturbing. In the developed world, Facebook is something you get to on the internet. In these developing markets, though, Facebook plans to be the internet.
No what I said exactly is how you propose to "simplify" the elections other than not present the voter with all the ballots that are required by law?
Make different laws.
You make it sound like all these different ballots are only put there to frustrate the voter;
No, I'm sure that frustrating the voters is not the purpose, merely an unintended side effect.
they are there as required by law and because that is the point of voting. Barring the national election races, each state, county, city has their own elections of officials. That doesn't include any special districts the voter may reside. Now, to simplify the ballot, there could be multiple separate elections but that require organization and cost by the local authorities. The other thing that you are ignoring is that no one is required to vote on all the ballot measures. Some people vote on the elections they care about and ignore the rest. The vote is only counted as long one ballot is filled.
Uh, did you actually just tell me that democracy works fine if most people didn't bother to vote for most of the elections because it's too hard?
You do realize that what this means is that special interest groups-- for whom the minor issue and "unimportant" candidates are important-- dominate the results.
I'm sorry we are talking about different things.
In your example, you state that Dixville Notch publishes their results immediately after their polls close. That is echoing exactly what I said. They don't publish "preliminary" results before the polls close; they wait until the polls close and publish their results.
Other polls in other places may still be open, yes.
If the polls don't close until 8, they often publish preliminary results before the polls close.
No, news media could publish exit poll results, but actual voting results--even preliminary results--aren't released until polls close. (And reputable news sources don't even publish exit poll results until the polls close.).
But... if you can hack into the election website, it doesn't matter that the people running the website don't release results until the polls close, because they're not running the website. So you could publish anything you want any time you want.
Yep. Nevertheless, the article cited shows some pretty shocking stuff:
"We've looked at poor voting security in the state previously. In 2017, a report by a Georgian security researcher revealed a shocking lack of security throughout the state's voting system. Later that year, we discovered that servers that were thought to be key evidence for the same federal lawsuit that has led to this week's news were wiped, then repeatedly degaussed."
I'm a little disturbed that in response to a federal lawsuit over election results, the people running the election destroyed the evidence including the backup servers. This, I would think, should be obstruction of justice, and definitely contempt of court. (Not to mention violation of the Georgia State law on record retention.)