So what exactly happens when they point the laser at a tank with a bunch of large corner cube reflectors mounted on it? I mean, if even a fraction of the laser energy comes back I could see this being a real problem.
I was staring at my a/c compressor on Saturday, and I couldn't figure out the logic for how it was situated. It's on the sunny side of the house, about 6 inches from the wall. What this means is that it's easily got an extra 10F to overcome from the sunlight alone and the airflow is restricted so it's just warming up the nearby air that it's trying to use as a heat sink.
It just seems to me that an a/c compressor that was on the shady side of the house and maybe 10+ feet away would run somewhat more efficiently.
Maybe it's only a 3 or 4 percent difference in overall performance but multiply that by 50 million air conditioners and that would have a noticeable effect on the peak.
first, out-of-order on 1% of the packets means that a lot of files that require less than 100 packets will still get through in order. and upping the percentage is a fool's game: (a) there's no reason a small image won't fit in one or two 1500 byte packets and (b) if enough people do this (or any other TCP-level hack) they can just add some smarts to the content filter, or choose a hash that doesn't depend (as much) on order.
your second point about truth in advertising laws seems like a blind alley. you'd have to actually be a customer who bought the software, used it, and had major problems with it, in order to have standing to file suit. and it's going to be difficult to get a prosecutor to go after a company that's trying to stop the spread of c.p. so you'd have to pay the legal bills yourself. finally, once you get in front of the judge, what are you gonna do, complain that you were *able* to send c.p., admitting in open court that you've done something illegal?
TFA says they're going to use hash values. This will take a stateful packet inspection filter to catch, but the amount of state is only enough do the hash, and they can throw it away if it doesn't match anything on the blacklist.
While hashing seems easy enough to get around, I think the real thing they're looking for is a repeated pattern of someone sending blacklisted images. If you send/receive thousands of images, there's a good chance that you'll screw up and maybe a dozen of them won't get resampled (or use some other trick) to change the hash value. you'll pop up on a screen someplace, they'll get a search warrant, and you are busted.
the wiki for compressed air cars says a prototype air-powered car did 7.22 km, or about 4.5 miles. that's much better than I thought, but still not practical for most commuters.
It's got a lot going for it, but the energy capacity of a tank of air, even at ridiculously high pressures, won't take a car very far, like a fraction of a mile maybe.
Re:Facts for the Conspiracy Theorists
on
Fossett's Plane Found
·
· Score: 2, Interesting
>> That's one great reason why we pay taxes people.
Though I can't say I'm pleased at the thought of paying taxes that will go to searching for swashbuckling billionaires who crash their private planes into national parks. Seems like people in that category can handle a few invoices for the extra services they require.
I think mmap since kernel 2.4 (maybe even earlier?) swaps right off the file system w/o moving it to the swap device. You'd have to do MAP_PRIVATE and scribble all over the segment to start eating into regular swap space.
I'm old enough to remember the workplace before internet, smart phones, pagers, gameboys, etc.
I mean, there was no pretense that use of a gadget was anything other than goofing off. You were supposed to be working: ringing up customers, moving inventory, filling out forms, maybe even entering PURELY BUSINESS RELATED DATA into a computer. If your boss caught you playing LED football or watching a 1.5'' portable TV he'd confiscate the item and yell at you to get back to work and stop wasting time.
These days, it's the bosses that have the gadgets and it seems to me like it's still a waste of time, only now they try to make their underlings and IT departments into co-dependent timewasters just to get the things to work.
I've worked some unpaid overtime in my life, but the amount is miniscule in comparison to the amount of time I've spent during normal working hours surfing the web, reading usenet, emailing my buddies, checking sports scores, ordering stuff from amazon, everything the internet allows. Easily two to three hours a day on an ongoing basis.
I just can't get mad about a couple hours of evening work or blowing a sunday afternoon in the office once a month when I'm just going to read slashdot while waiting for a batch job to finish.
The article says he "designed" a carbon nanotube. Unless his design happens to match an easy-to-manufacture randomly-oriented blob of short carbon chain cylinders, it's not going to get very far. you can't just pick up carbon atoms and place them here and there like they were cinder blocks to match your custom design.
also i suspect that even if he is very, very bright, the properties (electrical, photonic) of his carbon nanotube design may not actually match his expectations. The use and applications of nanotubes is still kind of unusual and their properties are not as predictable a priori, as compared to silicon, for example.
A lot of Vtech's cordless phones have a backup battery in the base station. I think it only lasts a few hours, but I have 8 handsets so I can swap in a fresh one a couple times a day and still have phone service for probably as long as the phone company's backup power would last. I have to remember to remove the batteries from all the handsets before the handsets use them up though.
With a little wiring I could probably rig it up to use some alkalines or RC car batteries. And if the power brick is 6V or 12V you can get a commodity lead acid battery that will probably last for a month.
What's a crime is that companies which issue credit cards, auto loans, mortgages, etc will accept your name, ssn, and mother's maiden name, as proof of identity.
These items just aren't secrets anymore so there's no reason for banks (etc) to go on thinking that only the "real" john smith would know them.
Banks that lend out money in my name should be forced to absorb resultant losses themselves. Equifax and trans union should be targets for libel lawsuits when they ding your credit rating because of ID theft.
Slashdot Mirror
I just want to see the see-through pneumatic tubes make a comeback.
Or at least the ATM should make that THUMK sound when the cash is dispensed.
where is the dark antimatter?
maybe we can finally go back to AOS!
So what exactly happens when they point the laser at a tank with a bunch of large corner cube reflectors mounted on it? I mean, if even a fraction of the laser energy comes back I could see this being a real problem.
She should just summarily rule for the plaintiffs, treble damages of the going rate for a downloaded song (on itunes for example).
I was staring at my a/c compressor on Saturday, and I couldn't figure out the logic for how it was situated. It's on the sunny side of the house, about 6 inches from the wall. What this means is that it's easily got an extra 10F to overcome from the sunlight alone and the airflow is restricted so it's just warming up the nearby air that it's trying to use as a heat sink.
It just seems to me that an a/c compressor that was on the shady side of the house and maybe 10+ feet away would run somewhat more efficiently.
Maybe it's only a 3 or 4 percent difference in overall performance but multiply that by 50 million air conditioners and that would have a noticeable effect on the peak.
your points are interesting but not convincing.
first, out-of-order on 1% of the packets means that a lot of files that require less than 100 packets will still get through in order. and upping the percentage is a fool's game: (a) there's no reason a small image won't fit in one or two 1500 byte packets and (b) if enough people do this (or any other TCP-level hack) they can just add some smarts to the content filter, or choose a hash that doesn't depend (as much) on order.
your second point about truth in advertising laws seems like a blind alley. you'd have to actually be a customer who bought the software, used it, and had major problems with it, in order to have standing to file suit. and it's going to be difficult to get a prosecutor to go after a company that's trying to stop the spread of c.p. so you'd have to pay the legal bills yourself. finally, once you get in front of the judge, what are you gonna do, complain that you were *able* to send c.p., admitting in open court that you've done something illegal?
TFA says they're going to use hash values. This will take a stateful packet inspection filter to catch, but the amount of state is only enough do the hash, and they can throw it away if it doesn't match anything on the blacklist.
While hashing seems easy enough to get around, I think the real thing they're looking for is a repeated pattern of someone sending blacklisted images. If you send/receive thousands of images, there's a good chance that you'll screw up and maybe a dozen of them won't get resampled (or use some other trick) to change the hash value. you'll pop up on a screen someplace, they'll get a search warrant, and you are busted.
Steve Jobs won't get upset by this at all. No sirree!
http://yro.slashdot.org/article.pl?sid=08/10/08/1224224
Some background in parallelism is helpful for mastering threads.
I learned from this book:
http://www.lindaspaces.com/book/
C-linda never caught on, but it's not hard to read the examples and apply them to pthreads, java, MPI or whatever framework you're using.
How much beer do you save by drinking it out of a mug instead of straight from a bottle or can?
(replying to my own message)
the wiki for compressed air cars says a prototype air-powered car did 7.22 km, or about 4.5 miles. that's much better than I thought, but still not practical for most commuters.
It's got a lot going for it, but the energy capacity of a tank of air, even at ridiculously high pressures, won't take a car very far, like a fraction of a mile maybe.
>> That's one great reason why we pay taxes people.
Not quite.
http://news.slashdot.org/article.pl?sid=08/05/01/2057200
Though I can't say I'm pleased at the thought of paying taxes that will go to searching for swashbuckling billionaires who crash their private planes into national parks. Seems like people in that category can handle a few invoices for the extra services they require.
do you know if is this true even for 64 bit proggies?
I think mmap since kernel 2.4 (maybe even earlier?) swaps right off the file system w/o moving it to the swap device. You'd have to do MAP_PRIVATE and scribble all over the segment to start eating into regular swap space.
I'm old enough to remember the workplace before internet, smart phones, pagers, gameboys, etc.
I mean, there was no pretense that use of a gadget was anything other than goofing off. You were supposed to be working: ringing up customers, moving inventory, filling out forms, maybe even entering PURELY BUSINESS RELATED DATA into a computer. If your boss caught you playing LED football or watching a 1.5'' portable TV he'd confiscate the item and yell at you to get back to work and stop wasting time.
These days, it's the bosses that have the gadgets and it seems to me like it's still a waste of time, only now they try to make their underlings and IT departments into co-dependent timewasters just to get the things to work.
I've worked some unpaid overtime in my life, but the amount is miniscule in comparison to the amount of time I've spent during normal working hours surfing the web, reading usenet, emailing my buddies, checking sports scores, ordering stuff from amazon, everything the internet allows. Easily two to three hours a day on an ongoing basis.
I just can't get mad about a couple hours of evening work or blowing a sunday afternoon in the office once a month when I'm just going to read slashdot while waiting for a batch job to finish.
also note that slashdot itself is running open source software, on an open source OS.
give fetchmail a try?
The article says he "designed" a carbon nanotube. Unless his design happens to match an easy-to-manufacture randomly-oriented blob of short carbon chain cylinders, it's not going to get very far. you can't just pick up carbon atoms and place them here and there like they were cinder blocks to match your custom design.
also i suspect that even if he is very, very bright, the properties (electrical, photonic) of his carbon nanotube design may not actually match his expectations. The use and applications of nanotubes is still kind of unusual and their properties are not as predictable a priori, as compared to silicon, for example.
A lot of Vtech's cordless phones have a backup battery in the base station. I think it only lasts a few hours, but I have 8 handsets so I can swap in a fresh one a couple times a day and still have phone service for probably as long as the phone company's backup power would last. I have to remember to remove the batteries from all the handsets before the handsets use them up though.
With a little wiring I could probably rig it up to use some alkalines or RC car batteries. And if the power brick is 6V or 12V you can get a commodity lead acid battery that will probably last for a month.
I remember now, Andy Samberg did a how-to video about this on SNL.
What's a crime is that companies which issue credit cards, auto loans, mortgages, etc will accept your name, ssn, and mother's maiden name, as proof of identity.
These items just aren't secrets anymore so there's no reason for banks (etc) to go on thinking that only the "real" john smith would know them.
Banks that lend out money in my name should be forced to absorb resultant losses themselves. Equifax and trans union should be targets for libel lawsuits when they ding your credit rating because of ID theft.
Did you check the plane?
Did you check the m***** f****** plane?!