My doctoral dissertation focused on algorithms for tracking multiple objects (i. e., missiles) flying in the air.
By contrast, NASA is a highly political organization. It hires on the basis of affirmative action. An African-American with a degree from Texas Southern University (which is barely better than a typical ghetto high school) will be promoted before an Asian-American or a European-American with a degree from Caltech.
Do you have any real evidence for that? Having written a dissertation for the Air Force is less than anecdotal. All NASA administrators except for the current one have been white males, as have been most of the astronauts including all moonwalkers, and most other key people. That does not refute your allegations, but it calls for some stronger evidence.
So, if the Ares I booster fails in a similar way to how the Challenger SRB failed, at a similar altitude -- could the LES work? There was no big explosion (i.e. no cloud of flaming propellant particles), you'd only notice a significant loss of pressure and thrust (and probably thrust vector) as a result of the O-ring leak. Would the LES provide enough thrust to accelerate the capsule away from the booster?
RTLS, return to launch site, requires separation from the main tank and SRBs. Despite NASA's design changes most of us old rocket scientists think that will detonate the tank. Separating from the SRBs requires a hard pitch down to avoid the SRB plumes
I think RTLS, like all the other abort modes, becomes available only after the SRBs have burned out.
In computer lingo: a folder is a container for zero or more files
(or folders)
Which it isn't, anyway. It's a directory of links to files, much like an address book is a directory of links to people. So it *is* a directory, not a "folder". If you have to come up with a metaphor, why not with the correct one?
What's the third level of protection protecting you against?
You could set the permission bits of the graphics device such that only the "xserver" user can directly do the modeswitching and graphics/framebuffer manipulation stuff. This would prevent arbitrary user A from disrupting the display of user B (who is currently running an X session) by randomly resetting the mode of the graphics device. Even if the device were designed to exclusively grant access to the first user who opens it and lock out everyone else, you would still want that first user to be the dedicated "xserver" user rather than some arbitrary user who managed to come first in a multi-user installation.
Sounds like Windows NT 3.5, wonder if it will get moved back into kernel space for performance reasons just like NT4 moved video back into kernel space.
No, NT4 moved hardware-independent stuff like the GDI and the window system into kernel space, where it doesn't really belong. The hardware-specific video card drivers were always in kernel space, where they do belong.
In X, hardware-independent stuff like window managers and widget sets ran in user space, where they do belong, while the hardware-specific video card drivers also ran in user space, where they don't really belong.
Images of the Apollo landing sites are already available by the thousands, shot from just a few meters away, with the "artifacts" covering not just a few pixels, but a few tens of thousands of pixels. Whoever believes that all those pictures were faked up 20 years before Photoshop was even invented isn't going to believe that NASA images made 20 years *after* Photoshop was invented, and in which the artifacts cover just a few pixels, are not doctored.
What you mean because I use google as my search engine and mail server, I'm now forced to use all of their products? You mean I can't just surf to another page because of some sort of blocking mechanism?
What you mean because I installed Windows as my OS, I'm forced to use IE now? You mean I can't just surf to mozilla.com or opera.com and download an alternate browser because of some sort of blocking mechanism?
I guess the difference is that, with search engines, there's no (or hardly any) lock-in effect, while with browsers, there is (same goes for operating systems btw, which is why you can't "just" switch between them). If sites that you use regularly "work best" (or at all) with IE only, you can't just switch to another one. This problem has become much less severe in recent years only due do the growth of alternative browsers. There is no such lock-in with search engines. If all a search engine basically does is present matching links for the query you enter, then search engines will indeed compete on features and abilities only. The Google guy's remark that "the competition is just a click away" is basically correct here. Google is not in the position of a "gatekeeper" that could protect you from the web content that you're accessing and that they're just indexing. A browser manufacturer is.
The diff is 1500 lines, not sure where to look there. Scrolling with the mouse wheel or the scrollbar is equally unbearable (clicking a scrollbar button seems to trigger essentially the same behaviour as pressing cursor down).
I have a Firefox 3.0.11 installation at home (Iceweasel 3.0.11 on Debian), and one at work (Firefox 3.0.11 on FC 9). The machines are comparable (2 GB RAM, Intel Core 2 proc in both). In the installation at work, scrolling down in a Slashdot article forum is about 100 times slower than in the home installation: if I press cursor-down once, it scrolls about 10 pixels down at a speed of 5 pixels per second -- I'm not exaggerating. Running under a different user account with a clean profile and no extensions makes no difference.
Something is obviously completely out of control there.
Re:And to celebrate, it issued the command:
on
Unix Turns 40
·
· Score: 2, Insightful
find my_lawn -name kids\* | xargs rm -rvf
That'll fail to get a kid named "Joe Lawnmower" off your lawn, but will wipe out all lawnmowers and shoot all people named "Joe", including your grandfather.
I doubt Apple would bother including GC in Mac OS X 10.5 + Objective C 2.0 if it didn't work properly.
Parent was talking about ref counting, not GC. Apple bothered including GC in the ObjC runtime exactly because the reference counting they had before that had cycle detection issues (and it was harder to program to). In the commonly used terminology, GC and ref counting are different things.
If you think about it, you can't help but stand in awe of how amazing airplanes actually are. Just try to contemplate that right now there are some 4,000 or so of those hunks of metal flying in the sky, all at the same time, miles high, at the speed of a bullet, each one carrying 100s of people in them. And they're all going to land at their destinations, to be replaced with another 4,000 planes. And this all happens every day, for weeks and months and years on end. There is no way you would believe this if you didn't know it's true. In fact, if some calamity were to set back mankind to a point where this would no longer be possible, chances are you *wouldn't* believe it any longer. "Haha, ever heard of the jet age hoax? Totally ridiculous!":-P
You only have the tip of the iceberg, here. The truth of our current landscape in research is that all animal models are grossly inadequate for a complete understanding of human physiology.
Well, if all they ever do is swap some genes, growing new animals with the swapped genes and look for phenotypical (i.e., physiological/behavioural) changes in them, then it doesn't look to me like they're trying to *understand* very much at all. It's more like a systematic but dumb search for correlations. Kind of how physicists worked before Galileo and Newton.
One could argue that once Sun/Oracle Java have sufficiently abandoned their free/OSS Java licensing and made themselves indistinguishable from MS.NET in this regard, the licensing issue no longer works in favor of the Java camp, and thus you might just as well choose your dev environment based on technical merits only, which may lead to different decisions than before.
"I can't even get through the setup of a DHCP server running IPv6."
That is because IPv6 networks don't generaly use DHCP. They use autoconf or similar tools.
You've found one potential confusion already. Wikipedia describes Autoconf as "a tool for producing shell scripts that automatically configure C/C++ software source code packages to adapt to many kinds of UNIX-like systems."
He meant stateless autoconfiguration, which has absolutely nothing to do with autoconf (you probably knew that).
I tell this story all the time, and I'll tell it again.
I *tried* to build up a new fiber network in downtown St. Louis using IPv6. I couldn't get the address space!
It's insane - I could get 3x/24 blocks (non-sequential) assigned to my ASN, but in order to get an IPv6 allotment, I had to show proof that I *already* had utilized a full/24 of IPv6 addresses (which is NOT 256. It's 256*256*256!)
I don't know very much about IPv6 address assignments, but I'd have said it's 256*256*256*256*256*256*256*256*256*256*256*256*256, of which there are only 16.7 million in the whole IPv6 address space. I'm not really surprised they didn't want to give you such a thing, but maybe I misunderstand something here.
Slashdot Mirror
You've got to burn engines to enter and leave it.
To enter it, you mostly use the planet's athmosphere (if it has one) rather than engines.
when editing or displaying the document in other applications.
Though shall use other applications besides the mighty EMACS.
Got it? So there.
emacs starts up instantly on any modern machine
Maybe so, but then your 1,000 lines .emacs file, causing another 20,000 lines of compiled elisp code to run, doesn't.
My doctoral dissertation focused on algorithms for tracking multiple objects (i. e., missiles) flying in the air. By contrast, NASA is a highly political organization. It hires on the basis of affirmative action. An African-American with a degree from Texas Southern University (which is barely better than a typical ghetto high school) will be promoted before an Asian-American or a European-American with a degree from Caltech.
Do you have any real evidence for that? Having written a dissertation for the Air Force is less than anecdotal. All NASA administrators except for the current one have been white males, as have been most of the astronauts including all moonwalkers, and most other key people. That does not refute your allegations, but it calls for some stronger evidence.
So, if the Ares I booster fails in a similar way to how the Challenger SRB failed, at a similar altitude -- could the LES work? There was no big explosion (i.e. no cloud of flaming propellant particles), you'd only notice a significant loss of pressure and thrust (and probably thrust vector) as a result of the O-ring leak. Would the LES provide enough thrust to accelerate the capsule away from the booster?
RTLS, return to launch site, requires separation from the main tank and SRBs. Despite NASA's design changes most of us old rocket scientists think that will detonate the tank. Separating from the SRBs requires a hard pitch down to avoid the SRB plumes
I think RTLS, like all the other abort modes, becomes available only after the SRBs have burned out.
In computer lingo: a folder is a container for zero or more files
(or folders)
Which it isn't, anyway. It's a directory of links to files, much like an address book is a directory of links to people. So it *is* a directory, not a "folder". If you have to come up with a metaphor, why not with the correct one?
What's the third level of protection protecting you against?
You could set the permission bits of the graphics device such that only the "xserver" user can directly do the modeswitching and graphics/framebuffer manipulation stuff. This would prevent arbitrary user A from disrupting the display of user B (who is currently running an X session) by randomly resetting the mode of the graphics device. Even if the device were designed to exclusively grant access to the first user who opens it and lock out everyone else, you would still want that first user to be the dedicated "xserver" user rather than some arbitrary user who managed to come first in a multi-user installation.
Sounds like Windows NT 3.5, wonder if it will get moved back into kernel space for performance reasons just like NT4 moved video back into kernel space.
No, NT4 moved hardware-independent stuff like the GDI and the window system into kernel space, where it doesn't really belong. The hardware-specific video card drivers were always in kernel space, where they do belong.
In X, hardware-independent stuff like window managers and widget sets ran in user space, where they do belong, while the hardware-specific video card drivers also ran in user space, where they don't really belong.
Pick your poison.
Images of the Apollo landing sites are already available by the thousands, shot from just a few meters away, with the "artifacts" covering not just a few pixels, but a few tens of thousands of pixels. Whoever believes that all those pictures were faked up 20 years before Photoshop was even invented isn't going to believe that NASA images made 20 years *after* Photoshop was invented, and in which the artifacts cover just a few pixels, are not doctored.
I guess the difference is that, with search engines, there's no (or hardly any) lock-in effect, while with browsers, there is (same goes for operating systems btw, which is why you can't "just" switch between them). If sites that you use regularly "work best" (or at all) with IE only, you can't just switch to another one. This problem has become much less severe in recent years only due do the growth of alternative browsers. There is no such lock-in with search engines. If all a search engine basically does is present matching links for the query you enter, then search engines will indeed compete on features and abilities only. The Google guy's remark that "the competition is just a click away" is basically correct here. Google is not in the position of a "gatekeeper" that could protect you from the web content that you're accessing and that they're just indexing. A browser manufacturer is.
The strange thing is that this behaviour only happens on the Slashdot site. On other sites, the scrolling speed looks OK.
The diff is 1500 lines, not sure where to look there. Scrolling with the mouse wheel or the scrollbar is equally unbearable (clicking a scrollbar button seems to trigger essentially the same behaviour as pressing cursor down).
Intel onboard on the FC system, NVidia (+ their blob driver) on the Debian one.
Something is obviously completely out of control there.
find my_lawn -name kids\* | xargs rm -rvf
That'll fail to get a kid named "Joe Lawnmower" off your lawn, but will wipe out all lawnmowers and shoot all people named "Joe", including your grandfather.
Parent was talking about ref counting, not GC. Apple bothered including GC in the ObjC runtime exactly because the reference counting they had before that had cycle detection issues (and it was harder to program to). In the commonly used terminology, GC and ref counting are different things.
If you think about it, you can't help but stand in awe of how amazing airplanes actually are. Just try to contemplate that right now there are some 4,000 or so of those hunks of metal flying in the sky, all at the same time, miles high, at the speed of a bullet, each one carrying 100s of people in them. And they're all going to land at their destinations, to be replaced with another 4,000 planes. And this all happens every day, for weeks and months and years on end. There is no way you would believe this if you didn't know it's true. In fact, if some calamity were to set back mankind to a point where this would no longer be possible, chances are you *wouldn't* believe it any longer. "Haha, ever heard of the jet age hoax? Totally ridiculous!" :-P
You only have the tip of the iceberg, here. The truth of our current landscape in research is that all animal models are grossly inadequate for a complete understanding of human physiology.
Well, if all they ever do is swap some genes, growing new animals with the swapped genes and look for phenotypical (i.e., physiological/behavioural) changes in them, then it doesn't look to me like they're trying to *understand* very much at all. It's more like a systematic but dumb search for correlations. Kind of how physicists worked before Galileo and Newton.
One could argue that once Sun/Oracle Java have sufficiently abandoned their free/OSS Java licensing and made themselves indistinguishable from MS .NET in this regard, the licensing issue no longer works in favor of the Java camp, and thus you might just as well choose your dev environment based on technical merits only, which may lead to different decisions than before.
what the hell are they doing with a DVD player!?!
Watch latest sequels of "Earthlight -- Breathtaking pictures of Earth from Space" in HD?
In the future you'll be able to pay random Oracl^WJava consultants $450 per hour so they can tinker with your multitudes of GC tuning options for you.
Sure, it may have gone from working perfectly in 2.6.21 to not producing a beep in 2.6.28, but look how fast it has become! Priorities! :-P
"I can't even get through the setup of a DHCP server running IPv6."
That is because IPv6 networks don't generaly use DHCP. They use autoconf or similar tools.
You've found one potential confusion already. Wikipedia describes Autoconf as "a tool for producing shell scripts that automatically configure C/C++ software source code packages to adapt to many kinds of UNIX-like systems."
He meant stateless autoconfiguration, which has absolutely nothing to do with autoconf (you probably knew that).
I tell this story all the time, and I'll tell it again.
I *tried* to build up a new fiber network in downtown St. Louis using IPv6. I couldn't get the address space!
It's insane - I could get 3x/24 blocks (non-sequential) assigned to my ASN, but in order to get an IPv6 allotment, I had to show proof that I *already* had utilized a full /24 of IPv6 addresses (which is NOT 256. It's 256*256*256!)
I don't know very much about IPv6 address assignments, but I'd have said it's 256*256*256*256*256*256*256*256*256*256*256*256*256, of which there are only 16.7 million in the whole IPv6 address space. I'm not really surprised they didn't want to give you such a thing, but maybe I misunderstand something here.