IT's kind of expensive to get water into space. [...] Another problem with water floating in space, how would we keep it selective in only de-orbiting what is junk and not what is in use?
MichaelSmith has already provided a general answer, but here's some numbers to go with it.
"Look," Musk says, scribbling equations on a notepad, "the energy increases with the square of the velocity. To go 60 miles into suborbital space, like Rutan and the X-Prize, you need to travel at Mach 3. The square of that is 9. But to get to orbit, you need to go Mach 25, and the square of that is 625. So you're looking at something that takes 60 to 70 times more energy. And then, to come back, you need to unwind that energy in a meteoric fireball, and if there's one violation of integrity, you're toast."
Of course, we don't care as much about the return trip. We don't care at all about the water, and if we want to reuse the carrier, it's falling like SpaceShip One, not a space shuttle.
Launch water. You don't need to put the water into orbit, just release it in the path of whatever debris you want to deorbit and let your launcher fall back to earth. The debris loses velocity as it passes through a cloud of H2O molecules and slows down enough to re-enter the atmosphere. Sine you don't need the delta-v, the launches are fairly cheap, at least as long as we're at low altitudes.
[...] given that you have to use software from one company to provision the SAN, software from another to zone and authenticate it and then yet another for monitoring it all
Huh? If you buy your switch from EMC, you get EMC Connectrix Manager to handle zoning; if you buy your switches from Brocade or Cisco, then you have to use their software to zone everything. Or, you can spend a few extra bucks and buy EMC Control Center, which will handle the zoning for just about everything (which is especially handy in a mixed environment). Yes, ECC costs a bit more, but it also handles non-EMC gear, like HDC or HPQ arrays, or even NetApp.
ECC will also monitor all of the components of your SAN, but many people like to roll that monitoring into whatever's handling their network and server monitoring. Are you saying that your site uses different management tools for their network and their SAN?
Of course you won't find much 3ware in my NetApp deployment. EMC can't seem to get their act together as they just partner with other companies to provide you with a suite of products that don't integrate very well. NetApp does a much better job of this even going so far as to support ZFS.
WTF? You plug your Solaris box into your EMC SAN, and format the devices using ZFS. Nothing is simpler. Just make sure that you aren't using overlapping data protection; it won't hurt anything but it will waste space.
You build two, rsync them together, and give the second to a friend or relative in a different time zone. You can give them their own partition (sized according to how much of the cost they're willing to kick in) and each of you provides the off-site backup for the other.
Of course, that doesn't protect you from accidentally clobbering your own data, as the results would be automatically replicated to the off-site array. In that case, you want to look at something like rsnapshot or ZFS.
You need to watch the video. If the passport opens up just a bit, the shielding that is built into the passport's cover is no longer effective. And how bigis your wallet? My passport is way bigger than my wallet.
Some years ago my credit card issuer stopped using them because the usefulness didn't justify the expense. Now if I want, such as to order something online, my issuer will issue a one tyme use credit card number.
Who is your issuer? Mine stopped doing that years ago, and I'd like to find someone who still does.
Actually, what I saw in the summary, for that which I read before I gave up, was that he suspected malware had intercepted his password. It's kinda silly having a packet sniffer listening to all passing traffic, when all they really needed to do was look in common places for stored passwords, and have a keystroke logger intercept interesting things. The later two I've seen quite a bit. The first, not so often.
If you read far enough, your scenario is discussed. Haselton estimates the likelyhood of various attacks a bit differently than you do.
But according to what Sinegubko told me, this reasoning was probably wrong. The problem is that even though spyware installed on your machine could read passwords that are stored in configuration files, it would be a lot of work to write a spyware program that could do this, because every FTP program and SFTP program stores passwords according to a different algorithm. It's much simpler for spyware to simply watch the traffic sent and received from your machine, so that any unencrypted passwords will be spotted:
I've had good results with some home-grown scripts that grab the project-specific details from a database and then generate the relevant config files using a templating system like Genshi. Run it periodically against the database, check in changes and email diffs to the admin.
I've always used cpp as my template engine, but then again, I've been doing this since the '80's.
You just need to buy an RFID shield for your passport and you can put your mind at ease. Unless, of course, you want to worry about how they don't work.
The DJ (or more likely the DJ's employer) can avoid the $25K/yr streaming music fee. It instead gets borne by the (presumable larger) streaming service (who presumably has ways of recouping the costs of people listening to their streams).
Why not broadcast the music and the "DJ" separately? The DJ says, "Here's a song you'll like" and sends a JSON packet to your browser, telling it to (a) listen to it on Pandora or Last.fm or something, and (b) switch back to the DJ when the song is done.
Besides that, avoid UDP - it fails when you need it the most.
When a network gets congested, TCP keeps resending packets. Even with back-off, you start getting more packets just when you need fewer. UDP avoids this issue. You should only use TCP for remediation tools, not for reporting.
The summary confused me, so I looked it up, and it is true. Veins bring blood towards the heart. Arteries bring blood away from the heart.
Arterial blood is under high variable pressure due to the beating of the heart. If you get a cut in one, the blook escapes so fast it can't clot. Veins, on the other hand, have low constant pressure. If you get a cut, it scabs over and heals. Thus, veins run just under the skin, and arteries are located deep in your body, meaning that injecting something into a vein is both safer and easier that injecting it into an artery. Given those facts, I'd guess that the device is inserted into a vein and then guided through the heart and into an artery.
I always thought blood flows pretty fast, so the robot would need quite a bit of magnetic force to go against the blood friction. If it finds a clot, can it ram its way through like a battering ram? That would be cool.
Ramming its way through is probably a great way to get stuck, leaving you in worse shape than before. Personally, I'd worry about the thing getting stuck even without the ramming. I prefer Stereotaxis's approach, where the doctor could, in an emergency, pull it out by hand. If you don't want to follow the link, Stereotaxis uses a catheter with a small magnet at the tip. You're basically inside an MRI machine and two big magnets are used to make sure the catheter takes the right branch as the arteries divide into ever smaller vessels. When the doctor's done, the catheter is used to retrieve the probe, a process that continues to work if there's a computer crash or power failure.
A second advantage is that you don't need even larger magnets to pull the device backwards against the current when the procedure is done, or if you made a wrong turn at an arterial branch.
A third is that you don't have backwards pointing "hairs" sticking into the sides of your blood vessels. Ouch.
With the free bonus of having everything you do tracked for someone elses profit.
You say that like it's a bad thing. IMHO, Google's web history makes it all worth while. Once or twice a month, I'll use web history to track down something that I didn't feel was wroth bookmarking at the time, but now feel a need to revisit, sometimes even years after the original sighting. I'm willing to let Google use my historical data, as long as I'm also allowed to use it. I don't have to worry about whether I saw something at home or at work, on a PC or my iPhone, on my current hardware or on a VM that only lived three weeks two years ago; as long as I was logged into Google, it's all in the same data store and I can search it from any device with a web browser. When I do want privacy, my browser's stealth mode not only keeps my search history out of my local cache, it also keeps it out of Google's. The rest of the time, I sometimes wish that my browser's history could be synched to Google so that I find pages that I found via Slashdot or Boing-Boing instead of via a search.
Getting our userbase to actually give a flying fart about a naming protocol and then getting them to follow it!?
I won't be holding my breath for either of those two things to happen...
You obviously don't know how to motivate people. Tell your boss you can get everything renamed for $100/week. Then post a leader board showing who has renamed the most documents each week, and give each week's winner a gift certificate to a local restaurant. Don't let anyone win more than once a month, to prevent too much disruption of normal job duties, and set up some sort of meta-moderation to prevent gaming the system. (You could probably use slashcode out-of the-box, just make each document a story and suggest better names in the comments.)
You want (note that I didn't say need, that's being discussed elsewhere) a SPOT GPS Tracker. Here's some details: http://en.wikipedia.org/wiki/SPOT_Satellite_Messenger. It's generally $149 for the unit and $100/year for the service. I got one for my father-in-law, who's in his 80s and still working a cattle ranch. If he finds himself in a situation that he can't handle, he just needs to press one button and help is on the way. No need to worry about cell towers, it uses the Globalstar satellite network to send messages, so your kid can use it even while crossing the Atlantic in a kayak.
Slashdot Mirror
IT's kind of expensive to get water into space. [...] Another problem with water floating in space, how would we keep it selective in only de-orbiting what is junk and not what is in use?
MichaelSmith has already provided a general answer, but here's some numbers to go with it.
"Look," Musk says, scribbling equations on a notepad, "the energy increases with the square of the velocity. To go 60 miles into suborbital space, like Rutan and the X-Prize, you need to travel at Mach 3. The square of that is 9. But to get to orbit, you need to go Mach 25, and the square of that is 625. So you're looking at something that takes 60 to 70 times more energy. And then, to come back, you need to unwind that energy in a meteoric fireball, and if there's one violation of integrity, you're toast."
Elon Musk Is Betting His Fortune on a Mission Beyond Earth's Orbit
Of course, we don't care as much about the return trip. We don't care at all about the water, and if we want to reuse the carrier, it's falling like SpaceShip One, not a space shuttle.
Launch water. You don't need to put the water into orbit, just release it in the path of whatever debris you want to deorbit and let your launcher fall back to earth. The debris loses velocity as it passes through a cloud of H2O molecules and slows down enough to re-enter the atmosphere. Sine you don't need the delta-v, the launches are fairly cheap, at least as long as we're at low altitudes.
Ha-ha, suckers!
[...] given that you have to use software from one company to provision the SAN, software from another to zone and authenticate it and then yet another for monitoring it all
Huh? If you buy your switch from EMC, you get EMC Connectrix Manager to handle zoning; if you buy your switches from Brocade or Cisco, then you have to use their software to zone everything. Or, you can spend a few extra bucks and buy EMC Control Center, which will handle the zoning for just about everything (which is especially handy in a mixed environment). Yes, ECC costs a bit more, but it also handles non-EMC gear, like HDC or HPQ arrays, or even NetApp.
ECC will also monitor all of the components of your SAN, but many people like to roll that monitoring into whatever's handling their network and server monitoring. Are you saying that your site uses different management tools for their network and their SAN?
Do you sha hash your md5sums to make sure they are always correct too?
No need. You can cvalidate them with the original data.
Yes, but how do you know which file got its bits flipped? I'd use parchive to track all of the md5sums and correct any that get corrupted.
Of course you won't find much 3ware in my NetApp deployment. EMC can't seem to get their act together as they just partner with other companies to provide you with a suite of products that don't integrate very well. NetApp does a much better job of this even going so far as to support ZFS.
WTF? You plug your Solaris box into your EMC SAN, and format the devices using ZFS. Nothing is simpler. Just make sure that you aren't using overlapping data protection; it won't hurt anything but it will waste space.
And how do you back it up?
You build two, rsync them together, and give the second to a friend or relative in a different time zone. You can give them their own partition (sized according to how much of the cost they're willing to kick in) and each of you provides the off-site backup for the other.
Of course, that doesn't protect you from accidentally clobbering your own data, as the results would be automatically replicated to the off-site array. In that case, you want to look at something like rsnapshot or ZFS.
You need to watch the video. If the passport opens up just a bit, the shielding that is built into the passport's cover is no longer effective. And how bigis your wallet? My passport is way bigger than my wallet.
Some years ago my credit card issuer stopped using them because the usefulness didn't justify the expense. Now if I want, such as to order something online, my issuer will issue a one tyme use credit card number.
Who is your issuer? Mine stopped doing that years ago, and I'd like to find someone who still does.
Actually, what I saw in the summary, for that which I read before I gave up, was that he suspected malware had intercepted his password. It's kinda silly having a packet sniffer listening to all passing traffic, when all they really needed to do was look in common places for stored passwords, and have a keystroke logger intercept interesting things. The later two I've seen quite a bit. The first, not so often.
If you read far enough, your scenario is discussed. Haselton estimates the likelyhood of various attacks a bit differently than you do.
But according to what Sinegubko told me, this reasoning was probably wrong. The problem is that even though spyware installed on your machine could read passwords that are stored in configuration files, it would be a lot of work to write a spyware program that could do this, because every FTP program and SFTP program stores passwords according to a different algorithm. It's much simpler for spyware to simply watch the traffic sent and received from your machine, so that any unencrypted passwords will be spotted:
I've had good results with some home-grown scripts that grab the project-specific details from a database and then generate the relevant config files using a templating system like Genshi. Run it periodically against the database, check in changes and email diffs to the admin.
I've always used cpp as my template engine, but then again, I've been doing this since the '80's.
You just need to buy an RFID shield for your passport and you can put your mind at ease. Unless, of course, you want to worry about how they don't work.
What is this a solution for exactly?
The DJ (or more likely the DJ's employer) can avoid the $25K/yr streaming music fee. It instead gets borne by the (presumable larger) streaming service (who presumably has ways of recouping the costs of people listening to their streams).
Why not broadcast the music and the "DJ" separately? The DJ says, "Here's a song you'll like" and sends a JSON packet to your browser, telling it to (a) listen to it on Pandora or Last.fm or something, and (b) switch back to the DJ when the song is done.
Besides that, avoid UDP - it fails when you need it the most.
When a network gets congested, TCP keeps resending packets. Even with back-off, you start getting more packets just when you need fewer. UDP avoids this issue. You should only use TCP for remediation tools, not for reporting.
The summary confused me, so I looked it up, and it is true. Veins bring blood towards the heart. Arteries bring blood away from the heart.
Arterial blood is under high variable pressure due to the beating of the heart. If you get a cut in one, the blook escapes so fast it can't clot. Veins, on the other hand, have low constant pressure. If you get a cut, it scabs over and heals. Thus, veins run just under the skin, and arteries are located deep in your body, meaning that injecting something into a vein is both safer and easier that injecting it into an artery. Given those facts, I'd guess that the device is inserted into a vein and then guided through the heart and into an artery.
I always thought blood flows pretty fast, so the robot would need quite a bit of magnetic force to go against the blood friction. If it finds a clot, can it ram its way through like a battering ram? That would be cool.
Ramming its way through is probably a great way to get stuck, leaving you in worse shape than before. Personally, I'd worry about the thing getting stuck even without the ramming. I prefer Stereotaxis's approach, where the doctor could, in an emergency, pull it out by hand. If you don't want to follow the link, Stereotaxis uses a catheter with a small magnet at the tip. You're basically inside an MRI machine and two big magnets are used to make sure the catheter takes the right branch as the arteries divide into ever smaller vessels. When the doctor's done, the catheter is used to retrieve the probe, a process that continues to work if there's a computer crash or power failure.
A second advantage is that you don't need even larger magnets to pull the device backwards against the current when the procedure is done, or if you made a wrong turn at an arterial branch.
A third is that you don't have backwards pointing "hairs" sticking into the sides of your blood vessels. Ouch.
Shoot, they could even shrink themselves and travel through the body in their tiny shuttle.
Yeah, but did they have Raquel Welch with them?
So how is this different from this? Oh, yeah, there's no way to retrieve the robot if it gets stuck.
Crunchpad, crunchpad, crunchpad!
With the free bonus of having everything you do tracked for someone elses profit.
You say that like it's a bad thing. IMHO, Google's web history makes it all worth while. Once or twice a month, I'll use web history to track down something that I didn't feel was wroth bookmarking at the time, but now feel a need to revisit, sometimes even years after the original sighting. I'm willing to let Google use my historical data, as long as I'm also allowed to use it. I don't have to worry about whether I saw something at home or at work, on a PC or my iPhone, on my current hardware or on a VM that only lived three weeks two years ago; as long as I was logged into Google, it's all in the same data store and I can search it from any device with a web browser. When I do want privacy, my browser's stealth mode not only keeps my search history out of my local cache, it also keeps it out of Google's. The rest of the time, I sometimes wish that my browser's history could be synched to Google so that I find pages that I found via Slashdot or Boing-Boing instead of via a search.
Now I actually LOL'd on that one!
Getting our userbase to actually give a flying fart about a naming protocol and then getting them to follow it!?
I won't be holding my breath for either of those two things to happen...
You obviously don't know how to motivate people. Tell your boss you can get everything renamed for $100/week. Then post a leader board showing who has renamed the most documents each week, and give each week's winner a gift certificate to a local restaurant. Don't let anyone win more than once a month, to prevent too much disruption of normal job duties, and set up some sort of meta-moderation to prevent gaming the system. (You could probably use slashcode out-of the-box, just make each document a story and suggest better names in the comments.)
Final warning to Nintendo: Compete or die. It's the law of economics... Unless you're GM...
I think that there are plenty of indications that Nintendo competes just fine, thank you very much. Have you read http://lostgarden.com/2005/09/nintendos-genre-innovation-strategy.html? It's just a true today as it was four years ago.
You want (note that I didn't say need, that's being discussed elsewhere) a SPOT GPS Tracker. Here's some details: http://en.wikipedia.org/wiki/SPOT_Satellite_Messenger. It's generally $149 for the unit and $100/year for the service. I got one for my father-in-law, who's in his 80s and still working a cattle ranch. If he finds himself in a situation that he can't handle, he just needs to press one button and help is on the way. No need to worry about cell towers, it uses the Globalstar satellite network to send messages, so your kid can use it even while crossing the Atlantic in a kayak.
are only rare on Earth.
Citation, please?
Here's one: http://www.tricitiesnet.com/donsastronomy/mining.html
And here's about 165,000 more: http://www.google.com/search?q=space+asteroids+rare+earth+metals
You forgot a few:
Linux vs. *BSD
VI vs. EMACS
Gnome vs KDE
etc.
It's emacs vs vi, you insensitive clod!