Nitrox is used to address the problems caused by residual nitrogen. It allows longer bottom time in the same depth compared to compressed air, and it allows shorter surface time between repeated dives. For quick info take a look at http://www.techdiver.ws/nitrox_eng.shtml
I don't believe anyone is using pure oxygen as only breathing gas while diving because once o2 partial pressure gets high enough it, becomes poisonous. In tech diving, 100% o2 maybe used as decompression gas at ~6m and above. Tech/Rectec isn't my area of expertise so google will probably give more info than I ever can.
I certainly have never run out of air while diving.
More you dive, more certain you can be that it happens to you. It's not the best experience one can have during the holidays, but it'll teach you something;)
No, Google needs competition. Without competition companies have a tendency to get too comfortable and lose the edge they once had in innovation. Healthy competition is good for everyone. It has been and always will be a good driving force behind the innovation.
Doesn't really seem right to charge users for something like that, espicially the less savvy who might not know-any-better.
I think this should be considered to be no different to internet connection. In this context I'd like to say "PC/w internet connection" == "Mobile".
If you have a internet connection for which you pay per used bandwidth and you get a virus, do you get refund? You get 0wned and someone uses you as a spam relay, you get black-listed. Should you get refunded?
No. You should make sure that you have up to date AV running and you have firewall installed and configured. Even if the terminal is more widely spreaded than the internet connections are, and to even more clueless users, it's up to users to make sure that their system is secured.
Yes, there are ISPs which disconnect infected clients from their network and will not forward virus infected emails, but some of them don't care.
Of course there will be companies to provide AV and FW applications. Of course they wont be free. But then again, who can blame them. If you want to get it for free do it your self, GPL it and make sure that everyone can enjoy it.
This "find tangentially related documents" feature will be fine so long as they make it optional and set it to be off by default. Otherwise, I don't want their idea of what pages I should be looking at polluting my results list.
People spend way too much time wondering about how to backup things, when they really should pay more attention on restoring things.
Redundancy. Are there any obvioius desgin flaws? For example if you have raid controller but all disks have been connected to same cable or backplane, it wont do any good. In worst case scenario one of the drives will lock up the whole bus. What is the probability that in case of hardware failure the system will become unavailable? Example again, in case of failing CPU do you lose only the process that was running on that particular CPU, all processes assigned to that CPU or does it trash the whole OS?
Full system restore. What does it take to restore the system from scratch? Is it possible to do it remotely? Do you need to do something hands-on except to insert media from which to restore? Too often I have seen systems that need OS installed to restore tapes over it again. Decent systems provides you bootable tapes or boot monitor for restoring from backup media.
If the vendor says system will survive failure of single disk, make sure that you test it. Unplug disk on the fly and see what really happens.
The list is virtually endless: - Are there any internal hardware watchdogs to monitor health of hardware? - What happens when watchdog fails? - Is it possible to reroute things around broken components? Can this be done automatically? Does it require downtime? - What checks are in place to make sure that data doesn't get corrupted? - How will the failing component affect system load? - Are there ways to access hardware control panels and console remotely? Are they secure?
On Big Iron scalability is Big Issue, but it doesn't do any good if system doesn't stay up.
It makes me wonder, how are they doing it and if they got all the IP blocks for non-us countries, or if they just went by "blocking APNIC and RIPE blocks"
I don't know how they are pulling it, but I still have the access from my RIPE allocated networks.
Recently, he was misquoted in a magazine interview: he was said to believe aliens built them.
"I told them that I had spent half an hour alone in the King's chamber of the Great Pyramid," Rutan explains. From his engineering perspective, his conclusions differed from what Egyptologists said.
I disagree. It's got nothing to do with the software but the data.
Exactly.
The medium used to store the data should be documented as well.
We already have the problem accessing 5 - 10 yesr old backups as it's pain trying to find compatible devices for reading the data. But no matter how well documented the data format are if you cannot gain access to it.
The US Navy is right now studying using gravity waves to communicate to submarines underwater
The project the article mentions is going to try to determine whether or not these waves even exist at all. How could the Navy be trying to manipulate something to be used for communication, when we don't even know if that 'thing' exists or not? Seems like you'd want to discover the existence of something before trying to use/change it...
I agree with you, to some extent.
But then again, wasn't Morse exploiting electromagnetism before Maxwell combined theories of Electricity and magnetism? The point here is that you don't need to understand exactly how it works, you just need to understand how to exploit it.
This guy seems to be assuming that he will never be our of office. An unremovable microchip giving access to a crime database seems a bit out of place for a private citizen.
The article clearly states that it can be deactivated once he leaves the office.
Sure, it's a great idea, but it has a lot of implications. For example, commercial sites rely on their banner ads to generate revenue. If I cache one of their pages, this will mess with their statistics, and mess with their banner ads. In other words, this will piss them off.
Of course, most of the time, the commercial sites that actually have income from banner ads easily withstand the Slashdot Effect. So perhaps we could draw the line at sites that don't have ads. They are, after all, much more likely to buckle under the pressure of all those unexpected hits. But what happens if I cache the site, and they update themselves? Once again, I'm transmitting data that I shouldn't be, only this time my cache is out of date!
I could try asking permission, but do you want to wait 6 hours for a cool breaking story while we wait for permission to link someone?
So the quick answer is: "Sure, caching would be neat." It would make things a lot easier when servers go down, but it's a complicated issue that would need to be thought through in great detail before being implemented.
- Passport sucks because they are Big Brother and they track you from site to site. [...] - Google rocks because they don't maintain a massive customer-tracking database
All those pirate copies of Windows XP must be killing Microsoft.
When talking about MS monopoly, I remember someone saying that in long run Microsoft gained from piracy as it made Windows more widely accepted. I think this has some truth in it, do you think Microsoft would have 95% market share (or whatever it really is) if everyone would have bought their licenses since day one?
If I may exaggerate a little, by having using the pirated copies of windows the users helped Microsoft to kill the competition.
No matter which DNS server is the default in any distro. All of the DNS admins I know will compile or reinstall the server anyway.
It maybe true that some of the home users running a "server" in the closet may be using the default server of distro, but I think there aren't that many to make a difference.
[...] because its probably less expensive to get a faster computer then having a coder with great insight into ASM optimize a section of the code for a week.
This is exactly the problem these days. People think so way without really considering the consequences.
If you have a moderate or a large project in corporate environment, or a project that is delivered to larger audience, it's not uncommon to have 10,000+ users.
Now think if you have to get a new PC for each and every user because you don't want to get someone to do the optimization. Even if the upgrade would cost only a $50 for PC, it still $500,000. That's hell of a pay for a weeks (or month) job.
Even in case of a corporate environment where the application might run on a centralized manner (mainframe, cluster, whatever), upgrading your mainframe or cluster just because of lack of optimization is outright stupid.
It might cost a little more for a company to begin with, but in the end it will be lot cheaper.
Slashdot Mirror
I don't believe anyone is using pure oxygen as only breathing gas while diving because once o2 partial pressure gets high enough it, becomes poisonous. In tech diving, 100% o2 maybe used as decompression gas at ~6m and above. Tech/Rectec isn't my area of expertise so google will probably give more info than I ever can.
More you dive, more certain you can be that it happens to you. It's not the best experience one can have during the holidays, but it'll teach you something
No, it's more like asking Mozilla Foundation to fix the problems in DirectX.
If you have a internet connection for which you pay per used bandwidth and you get a virus, do you get refund? You get 0wned and someone uses you as a spam relay, you get black-listed. Should you get refunded?
No. You should make sure that you have up to date AV running and you have firewall installed and configured. Even if the terminal is more widely spreaded than the internet connections are, and to even more clueless users, it's up to users to make sure that their system is secured.
Yes, there are ISPs which disconnect infected clients from their network and will not forward virus infected emails, but some of them don't care.
Of course there will be companies to provide AV and FW applications. Of course they wont be free. But then again, who can blame them. If you want to get it for free do it your self, GPL it and make sure that everyone can enjoy it.
I have said it before and I say it again:
People spend way too much time wondering about how to backup things, when they really should pay more attention on restoring things.
Redundancy. Are there any obvioius desgin flaws? For example if you have raid controller but all disks have been connected to same cable or backplane, it wont do any good. In worst case scenario one of the drives will lock up the whole bus. What is the probability that in case of hardware failure the system will become unavailable? Example again, in case of failing CPU do you lose only the process that was running on that particular CPU, all processes assigned to that CPU or does it trash the whole OS?
Full system restore. What does it take to restore the system from scratch? Is it possible to do it remotely? Do you need to do something hands-on except to insert media from which to restore? Too often I have seen systems that need OS installed to restore tapes over it again. Decent systems provides you bootable tapes or boot monitor for restoring from backup media.
If the vendor says system will survive failure of single disk, make sure that you test it. Unplug disk on the fly and see what really happens.
The list is virtually endless:
- Are there any internal hardware watchdogs to monitor health of hardware?
- What happens when watchdog fails?
- Is it possible to reroute things around broken components? Can this be done automatically? Does it require downtime?
- What checks are in place to make sure that data doesn't get corrupted?
- How will the failing component affect system load?
- Are there ways to access hardware control panels and console remotely? Are they secure?
On Big Iron scalability is Big Issue, but it doesn't do any good if system doesn't stay up.
Please remove the trailing slash.
Intel+Linux is for those who cannot afford real computer.
Mod me as troll, but that's just how it is in real life.
The medium used to store the data should be documented as well.
We already have the problem accessing 5 - 10 yesr old backups as it's pain trying to find compatible devices for reading the data. But no matter how well documented the data format are if you cannot gain access to it.
But then again, wasn't Morse exploiting electromagnetism before Maxwell combined theories of Electricity and magnetism? The point here is that you don't need to understand exactly how it works, you just need to understand how to exploit it.
If I may exaggerate a little, by having using the pirated copies of windows the users helped Microsoft to kill the competition.
No matter what platform you are using, I'd suggest that you create just one account for the end-users. As always, keep it simple.
No matter which DNS server is the default in any distro. All of the DNS admins I know will compile or reinstall the server anyway.
It maybe true that some of the home users running a "server" in the closet may be using the default server of distro, but I think there aren't that many to make a difference.
If you have a moderate or a large project in corporate environment, or a project that is delivered to larger audience, it's not uncommon to have 10,000+ users.
Now think if you have to get a new PC for each and every user because you don't want to get someone to do the optimization. Even if the upgrade would cost only a $50 for PC, it still $500,000. That's hell of a pay for a weeks (or month) job.
Even in case of a corporate environment where the application might run on a centralized manner (mainframe, cluster, whatever), upgrading your mainframe or cluster just because of lack of optimization is outright stupid.
It might cost a little more for a company to begin with, but in the end it will be lot cheaper.