I'm not an expert, but when one talks about entropy, they mean randomness.
A computer freshly turned on has essentially random "data" in its memory; when you write a specific value into the memory it reduces the randomness of the system; this decreases the entropy.
I guess, after memory has been used and freed, it has (to anything not the original using program) some approximation of "random" bit patterns, so the next program which uses it makes it less random again. In real operating systems, the kernel itself clears out the memory before giving it out again, so the kernel is the one reducing entropy.
It turns out to be a _huge_ flare, so he won't die, just all the people on the hemisphere facing the sun.
It'd be a lot more obvious these days; first all the satelites would fry as they crossed the terminator, plus we'd lose telecomms and so on as the sun rose.
In the opening chapter it discusses why the wings are there - not because of NASA at all, but because of the USAF.
Well, mostly. NASA would have had a lifting body design with very small wings (see the concept drawings of the shuttle replacements that have appeared over the years).
The USAF required that the vehicle be able to be launched from the west coast US, do a single polar orbit and _land at the launch site_.
This requires about 1900km (1200miles) in cross-range capability. The only realistic way to do that is to fly.
Everything does HTTP keepalives. IE+IIS does something dodgier at the TCP layer where it doesn't send the FIN-ACK to tear down the connection, and can thus skip the SYN at the beginning of the next connection.
Yes. I've just finished reading the report, and basically there were lots of requests to get on-orbit images that would probably have shown the damage, but they were all knocked back.
The reasoning was spurious - "we've had foam hit the orbiter before, and not lost anything, so it should be fine now.".
The report is well worth reading. It's absolutely damning of NASA's management.
Nobody cares about it in PCs now, but when CPUs start hitting several hundreds watts, businesses and home users will be forced to take it into consideration or else be badly burned each time they open their power bill.
Not to mention the burns they'll get if they open their PC cases.
According to that article, the SIRTF is shuttle-servicable - "SIRTF is a long duration facility serviceable by a space shuttle or from the manned space station.".
This seems to require that it's in a fairly low Earth orbit, not in a solar orbit at all.
Surely the ends are the only thing that _can_ justfiy the means?
In the case of your examples, the ends would be:
a) No working Internet. b) No useful email. c) Lots of innocent deaths.
I'll grant you, these ends don't justify the means, but if the sort of means that were used on this spammer were used more widely, they'd be fine by me...
I guess it was persecution, but not in the way you probably mean - the first settlers in what's now the USA were Seperatists, who wanted to be able to persecute everyone else...
The worst case of spam I've seen was a user getting 6MB/day of spam.
I get probably 40 pieces per day, at maybe 10k each. I think I can probably afford the 400k/day disk space, given that the mail server has a few GB of disk space.
I guess it's a problem for people who don't run their own mail server, but that serves them right.
Re:Why do people insist on getting the plural wron
on
Space Legos!
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· Score: 1
Isn't it just USians who say this? Here in Australia everyone I knoew refers to the product as "Lego".
Slashdot Mirror
Back? What do you mean back?
Make your own damn judges.
I think you mean molecular Hydrogen (H followed by subscript 2), not dueterium, which is an isotope of Hydrogen.
Also, flammable and inflammable mean the same thing.
No, not really. That's enthalpy.
Entropy often results in heat (not the loss of heat), but that's simply because heat is essentially disordered states.
When I say I'm not an expert, I did do a few years of University Chemistry and Physics.
I'm not an expert, but when one talks about entropy, they mean randomness.
:)
A computer freshly turned on has essentially random "data" in its memory; when you write a specific value into the memory it reduces the randomness of the system; this decreases the entropy.
I guess, after memory has been used and freed, it has (to anything not the original using program) some approximation of "random" bit patterns, so the next program which uses it makes it less random again. In real operating systems, the kernel itself clears out the memory before giving it out again, so the kernel is the one reducing entropy.
Of course, I could be way off
Actually, it will. My ISP has a free-to-subscribers local mirror that they fill using BitTorrent. I usually get data from them at about 7-8MB/s...
It takes me about 1 hour to get 3 CDs to my house. Stop whining and get a real net connection.
Well, no.
It turns out to be a _huge_ flare, so he won't die, just all the people on the hemisphere facing the sun.
It'd be a lot more obvious these days; first all the satelites would fry as they crossed the terminator, plus we'd lose telecomms and so on as the sun rose.
I think confusing astrology and astronomy would get you lynched in a lot of places. You should be careful :)
I've never heard a chemist use Daltons at all and I used to know a lot of chemists (my dad's a Uni professor).
They all use amu these days, I think. Maybe in the backward non-metric world they still use Daltons?
Yeah, but besides all that, what have the Romans ever done for us? Nothing!
Oh, and you forgot the Manhatten project.
In this case, it's the grain of graphite that breaks off and starts a fire.
Why do people persist in repeating this rubbish?
Yes, thus "arguments are case-sensitive".
Please try to understand, before one of us dies!
This is the job of the kernel. Memory should be cleared out when given to a new process.
I think it's also that the shuttle is a much heavier lift vehicle than either the Russians or ESA use, thus it burns a lot more fuel.
Read the report.
In the opening chapter it discusses why the wings are there - not because of NASA at all, but because of the USAF.
Well, mostly. NASA would have had a lifting body design with very small wings (see the concept drawings of the shuttle replacements that have appeared over the years).
The USAF required that the vehicle be able to be launched from the west coast US, do a single polar orbit and _land at the launch site_.
This requires about 1900km (1200miles) in cross-range capability. The only realistic way to do that is to fly.
No, it's not.
Everything does HTTP keepalives. IE+IIS does something dodgier at the TCP layer where it doesn't send the FIN-ACK to tear down the connection, and can thus skip the SYN at the beginning of the next connection.
Yes. I've just finished reading the report, and basically there were lots of requests to get on-orbit images that would probably have shown the damage, but they were all knocked back.
The reasoning was spurious - "we've had foam hit the orbiter before, and not lost anything, so it should be fine now.".
The report is well worth reading. It's absolutely damning of NASA's management.
Not to mention the burns they'll get if they open their PC cases.
According to that article, the SIRTF is shuttle-servicable - "SIRTF is a long duration facility serviceable by a space shuttle or from the manned space station.".
This seems to require that it's in a fairly low Earth orbit, not in a solar orbit at all.
What's the story?
Ah, so it's philosopher jargon. I had wondered.
:)
At least when CS people invent jargon we use new words
Oh, and by sophist, I'm hoping you meant "A scholar or thinker." rather than "One skilled in elaborate and devious argumentation.".
Surely the ends are the only thing that _can_ justfiy the means?
In the case of your examples, the ends would be:
a) No working Internet.
b) No useful email.
c) Lots of innocent deaths.
I'll grant you, these ends don't justify the means, but if the sort of means that were used on this spammer were used more widely, they'd be fine by me...
I guess it was persecution, but not in the way you probably mean - the first settlers in what's now the USA were Seperatists, who wanted to be able to persecute everyone else...
Bah *waves paw*.
The worst case of spam I've seen was a user getting 6MB/day of spam.
I get probably 40 pieces per day, at maybe 10k each. I think I can probably afford the 400k/day disk space, given that the mail server has a few GB of disk space.
I guess it's a problem for people who don't run their own mail server, but that serves them right.
Isn't it just USians who say this? Here in Australia everyone I knoew refers to the product as "Lego".
Einstein was working as a patent clerk after earning his PhD in physics.
There's something of a difference.