The PDF document makes reference to its navigation accuracy relative to the last GPS or USBL update. USBL is an underwater positioning system in which the topside (boat) notifies the vehicle of its (the vehicle's) position. First, the topside's acoustic transducer pings the vehicle and determines the direction and distance of the vehicle's response ping. Using some trig and its own GPS position, the topside calculates the vehicle's position, and sends it in an acoustic message down to the vehicle. Coupled with a high-accuracy internal navigation system on the vehicle, this allows the vehicle to stay at depth and hold its survey course for long periods.
I agree. Checkpoint security is not REAL security. However, I would contend that real security does not exist. Nothing is truly secure, especially when people enforce it. Checkpoint security does an increasingly good job of finding threats put through X-ray scanners (or chemical sniffers) by anyone stupid enough to do so. But they're only deterrents.
Actually, the bigger cities don't always have the latest and greatest. At least in the Boston area, Verizon is rolling out FIOS to all the suburbs first, because the infrastructure changes are easier there. Who knows when they'll get to Boston (I'm specifically interested in Cambridge), but when they do I'm likely to drop Comcast immediately.
One of the most compelling reasons for deploying alternatives is that the US controls Navstar GPS. The US government can introduce random errors into the CA (civilian) codes, decreasing the accuracy of GPS receivers. This is called selective availability. US Military receivers can, of course, get the "correct" signal by being loaded with crypto keys to access P(Y) codes. Additionally, CA code (and even P-code), is susceptible to spoofing by the enemy. Obviously, without the right keys, GPS is hardly acceptable as a positioning system for non-US militaries.
It seems there have been small -- or maybe even strange, impractical -- advances in robotics
Welcome to the world of research. It takes a lot of work to make small advances like this one. The point of research is to solve specific, difficult problems. I'm willing to bet there were other reasons for this project.
Who cares if it's as fast as 1.5 miles of stacked laptops? Why do we always have to compare things in such arbitrary units? Let's ask some other questions:
How many football fields does the hardware span?
How many Volkswagens does is weigh?
How many AOL CDs worth of storage does it contain?
How many Libraries of Congress can it process per unit time?
If it were melted down and re-formed into low-cost housing materials, how many starving third-world children could it shelter?
well, this guy was smart and didn't put his personal information in his DNS entries.
But you can still send him flame mail here!
575e59eacfa44540b56fee1b6f116b63.protect@whoisguar d.com
i thought quite the opposite. though, honestly, after seeing a couple of the graphs, i decided not to read the content. comparing application performance on different versions of the kernel seems rather stupid.. like seeing if your car goes faster when you give it nicer seats. consumer application performance is largely dictated by the application code itself and the hardware it runs on. maybe it can handle multi-user I/O and multi-process scheduling better, but I didn't see much of that here.
When I hear the word 'tag' outside of the computing domain, all I think of is 'price tag'. When I own something and want to set it apart from other things, I don't say "I'll put a tag on this," I say "I'll put a label on this." Label sounds like a more appropriate word for marking any particular object. I think it makes slightly more sense to non-techie folks.
Abnormal steering is a prerequisite for driving in the Boston area. If my car shuts down when I'm switching lanes to avoid soccer moms in their minivans on their cell phones while drinking coffee, i'm in one tough situation.
Slashdot Mirror
as far as I can tell from Wikipedia, it doesn't.
nah, it does. i edited the wikipedia article to screw with you.
$ sudo yum install potato-pancakes
yum: okay!
The PDF document makes reference to its navigation accuracy relative to the last GPS or USBL update. USBL is an underwater positioning system in which the topside (boat) notifies the vehicle of its (the vehicle's) position. First, the topside's acoustic transducer pings the vehicle and determines the direction and distance of the vehicle's response ping. Using some trig and its own GPS position, the topside calculates the vehicle's position, and sends it in an acoustic message down to the vehicle. Coupled with a high-accuracy internal navigation system on the vehicle, this allows the vehicle to stay at depth and hold its survey course for long periods.
I agree. Checkpoint security is not REAL security. However, I would contend that real security does not exist. Nothing is truly secure, especially when people enforce it. Checkpoint security does an increasingly good job of finding threats put through X-ray scanners (or chemical sniffers) by anyone stupid enough to do so. But they're only deterrents.
now i trust there will be a whole slashdot article category devoted to these girls? i, for one, welcome our new humanoid dialysis-building overlords.
Actually, the bigger cities don't always have the latest and greatest. At least in the Boston area, Verizon is rolling out FIOS to all the suburbs first, because the infrastructure changes are easier there. Who knows when they'll get to Boston (I'm specifically interested in Cambridge), but when they do I'm likely to drop Comcast immediately.
egads! another joe user! now i don't feel so lonely.
I build autonomous underwater mine-hunting vehicles. Beat that, fishy.
That's one of the most informative posts I've ever seen on Slashdot. You must be new here!
Note that NXT is located in Cambridge, England, not Cambridge, Massachusetts.
By my calculations, assuming 1 LOC = 10 TB (base-10), that's 2 uLOC/sec! Egads!
if you think it's a threat now, just wait until Fedora 12 comes out next year!
One of the most compelling reasons for deploying alternatives is that the US controls Navstar GPS. The US government can introduce random errors into the CA (civilian) codes, decreasing the accuracy of GPS receivers. This is called selective availability. US Military receivers can, of course, get the "correct" signal by being loaded with crypto keys to access P(Y) codes. Additionally, CA code (and even P-code), is susceptible to spoofing by the enemy. Obviously, without the right keys, GPS is hardly acceptable as a positioning system for non-US militaries.
it's actually not too far from the truth. it's common for these systems to share information with each other. for example, for surveillance...
It seems there have been small -- or maybe even strange, impractical -- advances in robotics
Welcome to the world of research. It takes a lot of work to make small advances like this one. The point of research is to solve specific, difficult problems. I'm willing to bet there were other reasons for this project.
Beating the dead horse since 2005 (tm).
You must mean wobbly windows and other useless effects?
It's even easier than that: 10 PRINT "developers " 20 GOTO 10
well, this guy was smart and didn't put his personal information in his DNS entries. But you can still send him flame mail here! 575e59eacfa44540b56fee1b6f116b63.protect@whoisguar d.com
i thought quite the opposite. though, honestly, after seeing a couple of the graphs, i decided not to read the content. comparing application performance on different versions of the kernel seems rather stupid.. like seeing if your car goes faster when you give it nicer seats. consumer application performance is largely dictated by the application code itself and the hardware it runs on. maybe it can handle multi-user I/O and multi-process scheduling better, but I didn't see much of that here.
When I hear the word 'tag' outside of the computing domain, all I think of is 'price tag'. When I own something and want to set it apart from other things, I don't say "I'll put a tag on this," I say "I'll put a label on this." Label sounds like a more appropriate word for marking any particular object. I think it makes slightly more sense to non-techie folks.
Abnormal steering is a prerequisite for driving in the Boston area. If my car shuts down when I'm switching lanes to avoid soccer moms in their minivans on their cell phones while drinking coffee, i'm in one tough situation.