Remember back when we all thought that XML was going to achieve the semantic web by making good search engines unnecessary?
I never thought that because it didn't make sense. Somebody was still going to have to store local copies of the terabytes of the internet and have the computing horsepower to perform the searches. It's not like it's feasible to crawl the entire Internet every time you want to perform a search.
That's because they don't. They were referring to the people who pay them to place their ads; the people who click on the ads would be Doubleclick's customers' customers.
The people who click on the ads are Doubleclick's product.
They've had vehicles equipped with this for decades on all the local train tracks. Typically it's a pickup truck used for railway maintenance. The only potential new thing is the use of this on non-maintenance vehicles as a means of long-distance consumer/commercial transportation.
The only technology difference I see is that they're applying it to an articulated vehicle.
Geosync has nothing to do with determining north or south of the equator unless they're doing somthing with the timeing and shift of position of the satalites to determine that.
Funny, that's exactly how GPS works. You measure the delays from the satellites you can see, figure out where they're supposed to be, and calculate. How else would you do it? Directional antennas would work, but wouldn't be practical.
Geosync orbits are not always equatorial. it's possible to have Geosync that's over spots other than the equator. Though I believe there is a sort of figure eight pattern for such satalites for some reason that might complicate a gps like system, but if thier already sub-geosync they're already dealing with such complications.
That kind of orbit is non-circular, which complicates the problem further, and there's two other problems being in a non-synchronous orbit solves.
By using near-polar orbits, good coverage can be guaranteed for all points on the globe (barring local phenomena like canyons and large numbers of tall buildings). Additionally, a sat that's farther away needs a more powerful transmitter, a better receiver, and bigger solar panels to handle the increased power requirements of the first two.
After all, geosynchoronous orbit isn't exactly standing still- but does the fact the clock is moving at speeds of close to 24,000 mph matter, relativistically?
One, GPS satellites are not in geosynchronous orbit. They're in a higher than LEO (but lower than geosynchronous) orbit that they pretty much have to themselves. You don't want them all in geosynchronous orbit either, because then the receiver can't tell if it's north or south of the equator.
Two, relativistic effects on the GPS satellites cause a discrepancy of 38 microseconds per day. This translates into an error of about 10 km/day if uncorrected (or so they say). The fact is, the major operational duty of the people running the GPS system is keeping the clocks on the satellites synchronized.
If you let it drift too long, a receiver might even end up calculating nonsense values, like being 500 km underground, or halfway to the moon, but that's just speculation on my part.
if my calculations are right, 59 billion phoboses would equal about one mars.
. and it would take 286 billion deimoses to equal one mars. they're really insignificant moons.
I think you've got a decimal wrong there, I get 59 million Phoboses and 286 million Deimoses.
But that wasn't my point.
In comparison, it would take about 81 of Earth's moons to equal the mass of the Earth.
Parent was supposed to be funny, not "informative". Parent was paraphrasing "Hitchhiker's Guide", more precisely its explanation why was "Guide" better sold than other encyclopedias.
Ah, but it's mostly true. Wikipedia does have "Welcome to Wikipedia" on what passes for its cover. Wikipedia does tell you how to mix drinks (see the article on Martinis for an example). Wikipedia even describes some of the voluntary organisations that exist to help you rehabilitate afterwards.
It does not, however, tell you what the best drink is and where the best ones are mixed. "Best" is fairly subjective, and as such violates the Neutral Point Of View policy. But it makes up for it by including the biochemical description of alcohol as well.
(R)esistance is expressed in Ohms
(E)lectrical Potential is expressed in Volts
(I)Current is expressed in Amperes
Don't apply the units until you actually make the calculation.
At least, that's what they taught me in my military electronics training, way back when.
E is used for the electric field vector.
One uses V both for Voltage, the electric potential, and Volts, the unit of electric potential. Thus you end up with expressions like "V = 12 V", where the first V is a variable and the second V is the units.
You learn not to confuse the two fairly quickly. Typically the variable is designated with a lowercase v and usually has a handful of subscripts hanging off it.
At least that's what they taught me in my electrical engineering classes not so long ago.
I'd like to think that by the time we have people on Mars with the equipment and time to go looking for old rovers and the like, we might have a museum on Mars itself to put them in.
There are two of the things. Keep one on Mars and send the other one to the Smithsonian.
I can only hope the ridiculous "Sunbird" name for the calendar product never takes off (and they get a better icon that's actually visible). It's not an official mozilla product anyway, so I'm not worried yet. Maybe "Sundog", but there's got to be another creature that'd fit the scheme.
They've got fire and air elementals. Now they need water and earth, and they'll be able to use some badass combo techniques.
If you kill them without damaging their lovely coats you could remove the insides and stuff them with something safe so they can be sold to children as cuddly toys. Hmmm...you'd probably have to replace the eyes too. Can't wait to see them in stores!
Ob-Futurama:
Sheldon: Do any of you collect Lovey Bears?
Amy: I do! Kif's given me dozens! Is it true what the ad says? That you kiss them together out of blanket cloth and magic buttons?
Gwen: No.
Sheldon: It's actually cheaper to genetically engineer real ones. [The walkway passes an area of grass where Lovey Bears turn around playing with each other and picking flowers.] They frolic in the Lovey Forest until their first birthday then we choose the cuddly-uddliest ones and stuff them full of fire retardant love fluff!
Not to pick nits, but shouldn't it have infinite miles per gallon? Zero miles per gallon implies that, no matter how much gas you put in it, it'll never go anywhere.
As others have stated, dividing by zero is undefined.
When people talk about X/0 equalling infinity, what they mean is that the limit as the denominator approaches zero from the appropriate direction is infinity. This is not the same as X/0 being equal to infinity, and is not true in all cases of division by zero.
In this case, taking the limit as the amount of gas approaches zero from the positive side yields zero miles per gallon, as it never goes anywhere for any amount of gas.
I was reading here some mentions of how the US government pays farmers not to grow crops. I've heard of it before and I was wondering what the rationale is
It's a matter of price supports. If the US's full agricultural capacity was used, food would become too cheap to grow. An overproductive year could concievably put a large percentage of farmers out of business, because the prices they get for their produce would be lower than their operating costs. Then the next year, prices would shoot up due to the loss of farms.
The US government doesn't like instability like this, so they tried to come up with a solution. The problem is that the rational behavior for an individual farmer is to attempt to produce as much as possible. When taken in aggregate, this is an irrational behavior, and results in the boom/bust above. The US government decided that they would handle the problem by paying farmers not to grow.
UL 2043: "Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces"....so my new AirPort base has a smoke detector inside it? Why don't they build that into the new Powerbooks?;-)
It means you can shove an airport base station into an air duct without violating safety codes.
The BeOS programmer's guide covers two functions IsComputerOn (returns 1.0 if computer is on, unspecified otherwise) and IsComputerOnFire (returns temperature if mainboard has flames coming from it, unspecified otherwise). It's right there in the printed version (though I quote from memory).
Are you still talking about uniform circular motion? I always thought a centripetal force must exist in uniforum circular motion.
Centripetal force must exist in uniform circular motion. But centrifugal "force" does not require uniform circular motion in order to appear to exist, only a rotating reference frame.
Centripetal force is a resultant force (since in circular motion an object undergoes constant acceleration). As used in most physics classes (etc.), it is introduced as a compensatory fictional force that makes a non-inertial frame of reference seem like an inertial one.
Centripetal force is real. If there was no centripetal force, there would be no acceleration, and the object in question would not follow a circular path. In the classic "bucket on a rope" example, the centripetal force on the bucket is applied by the rope.
Centrifugal "force" is not the counter-force to centripetal force, and indeed, can exist even in the absence of centripetal force.
Run ping -f to the wrong host and it's a DDoS attack, not a test of simple dropped packets
Wikipedia recently encountered something similar. To stem abuse, they've been scanning for and blocking open proxies. Unfortunately, this was seen as abuse.
Slashdot Mirror
I never thought that because it didn't make sense. Somebody was still going to have to store local copies of the terabytes of the internet and have the computing horsepower to perform the searches. It's not like it's feasible to crawl the entire Internet every time you want to perform a search.
The people who click on the ads are Doubleclick's product.
DaimlerChrysler is not Mitsubishi Motors Company, although it owns a very large stake in the Japanese car company (37%) which it is trying to sell.
The only technology difference I see is that they're applying it to an articulated vehicle.
Funny, that's exactly how GPS works. You measure the delays from the satellites you can see, figure out where they're supposed to be, and calculate. How else would you do it? Directional antennas would work, but wouldn't be practical.
That kind of orbit is non-circular, which complicates the problem further, and there's two other problems being in a non-synchronous orbit solves.
By using near-polar orbits, good coverage can be guaranteed for all points on the globe (barring local phenomena like canyons and large numbers of tall buildings). Additionally, a sat that's farther away needs a more powerful transmitter, a better receiver, and bigger solar panels to handle the increased power requirements of the first two.
One, GPS satellites are not in geosynchronous orbit. They're in a higher than LEO (but lower than geosynchronous) orbit that they pretty much have to themselves. You don't want them all in geosynchronous orbit either, because then the receiver can't tell if it's north or south of the equator.
Two, relativistic effects on the GPS satellites cause a discrepancy of 38 microseconds per day. This translates into an error of about 10 km/day if uncorrected (or so they say). The fact is, the major operational duty of the people running the GPS system is keeping the clocks on the satellites synchronized.
If you let it drift too long, a receiver might even end up calculating nonsense values, like being 500 km underground, or halfway to the moon, but that's just speculation on my part.
I think you've got a decimal wrong there, I get 59 million Phoboses and 286 million Deimoses.
But that wasn't my point.
In comparison, it would take about 81 of Earth's moons to equal the mass of the Earth.
Ah, but it's mostly true. Wikipedia does have "Welcome to Wikipedia" on what passes for its cover. Wikipedia does tell you how to mix drinks (see the article on Martinis for an example). Wikipedia even describes some of the voluntary organisations that exist to help you rehabilitate afterwards.
It does not, however, tell you what the best drink is and where the best ones are mixed. "Best" is fairly subjective, and as such violates the Neutral Point Of View policy. But it makes up for it by including the biochemical description of alcohol as well.
A dump of the Wikipedia database is available. It's certainly big, and the content is interesting, although the structure isn't.
E is used for the electric field vector.
One uses V both for Voltage, the electric potential, and Volts, the unit of electric potential. Thus you end up with expressions like "V = 12 V", where the first V is a variable and the second V is the units.
You learn not to confuse the two fairly quickly. Typically the variable is designated with a lowercase v and usually has a handful of subscripts hanging off it.
At least that's what they taught me in my electrical engineering classes not so long ago.
There are two of the things. Keep one on Mars and send the other one to the Smithsonian.
It's a derivative work of an old Chris Rock bit about "bullet control".
Eh? Grand Theft Auto 1 a killer app for the PS2?
I think you've confused it with Grand Theft Auto 3.
They've got fire and air elementals. Now they need water and earth, and they'll be able to use some badass combo techniques.
As others have stated, dividing by zero is undefined.
When people talk about X/0 equalling infinity, what they mean is that the limit as the denominator approaches zero from the appropriate direction is infinity. This is not the same as X/0 being equal to infinity, and is not true in all cases of division by zero.
In this case, taking the limit as the amount of gas approaches zero from the positive side yields zero miles per gallon, as it never goes anywhere for any amount of gas.
Or even "Executive One" for a civilian aircraft. See the FAA regulation on the subject.
It's a matter of price supports. If the US's full agricultural capacity was used, food would become too cheap to grow. An overproductive year could concievably put a large percentage of farmers out of business, because the prices they get for their produce would be lower than their operating costs. Then the next year, prices would shoot up due to the loss of farms.
The US government doesn't like instability like this, so they tried to come up with a solution. The problem is that the rational behavior for an individual farmer is to attempt to produce as much as possible. When taken in aggregate, this is an irrational behavior, and results in the boom/bust above. The US government decided that they would handle the problem by paying farmers not to grow.
It means you can shove an airport base station into an air duct without violating safety codes.
From Ward's Wiki:"It's not ironic, it's just coincidental." -- Bender
Centripetal force must exist in uniform circular motion. But centrifugal "force" does not require uniform circular motion in order to appear to exist, only a rotating reference frame.
I know that it's not real. But it can appear to exist when centripetal force does not exist.
Centripetal force is real. If there was no centripetal force, there would be no acceleration, and the object in question would not follow a circular path. In the classic "bucket on a rope" example, the centripetal force on the bucket is applied by the rope.
Centrifugal "force" is not the counter-force to centripetal force, and indeed, can exist even in the absence of centripetal force.
Wikipedia recently encountered something similar. To stem abuse, they've been scanning for and blocking open proxies. Unfortunately, this was seen as abuse.