The problem isn't so much the design lifecycle, it's the cost of upgrades. When you have to essentially rebuild an entire ship to retool the comm infrastructure that's a hell of a lot of cost. They design a hull to sail for 50 years, but the ship will typically have to be refitted multiple time during that span to keep up with newer technology costing several times the initial cost to build it and keeping it out of service for years in total.
The idea behind autonomous high altitude drones is they stay up indefinitely (barring parts breaking) by using solar panels to produce and store enough energy to stay aloft. Today we have thousands of flights a day using much more massive aircraft, I don't think a few extra ultralight drones are a significant increase in the risk associated with aircraft.
It would be much better to use a small fleet of high altitude autonomous drones with communications gear on board. It would be cheaper to startup, cheaper to maintain, easier to upgrade, lower latency, etc. For certain applications satellites will still be needed, but we are at the edge of the next generation of low cost communications brought to us by continuously flying drones flying between 10 and 20 miles up.
Except those numbers are nowhere near reality. My calculations are that running a $36,000 DL 585 G2 at 70% utilization will result in a 3 year power bill for the machine + AC of ~$2,500 @ $.10/KWhr. AC is only about 1/8th of total power usage, so you would have to see a less than 2% increase in failure rate for this strategy to pay off assuming that you incur no measurable increase in downtime and association expenses.
If you're buying DL585's then it's likely that the applications hosted on it have a downtime costs per hour (if not minute) equal to the cost of the hardware. These are the servers that large sections of the NYSE run on for instance.
Actually, it's quite the opposite. Only ~5% of trained listeners could reliably tell the difference between a high bitrate mp3 and the original 14.1 recording inABX testing on average samples, so what makes you think that they can hear the difference between 24bit and 16bit? Even if you think you have golden ears and can pick up the difference between high bitrate and lossless then I have to ask, can you hear tones above 16khz at volumes that would not produce hearing loss if the entire mix was at that level? Because again that's a VERY small percentage of the population and it's mostly under 20 years old.
Are you kidding, gun ownership is very high among geeks so a might makes right world wouldn't be so bad today for us. I don't care how muscle bound someone is, a high caliber pistol make all men the same size. Oh and personally I would have little to worry about even without a pistol, 6'3" 220 relatively lean pounds, not all of us are shapeless blobs =)
Unless high level nuclear waste is leaking directly into your drinking supply in sufficient quantities to raise the radiation level significantly above background levels it's not much of a problem, and breeder reactors eliminate almost all of the high level waste. If it's still hot enough to be dangerous then it's still useful as fuel.
Exactly, look at it this way:How many people are expected to die each year through faults in the storage system if n percent of electricity is produced this way vs how many people are expected to die from the expected increase in global temperature caused by NOT using this storage methodology. If the former is less than the latter then it's a good idea to use the technology. It's like the Alar scare, an order of magnitude more people are estimate to have died from cancer due the deceased consumption of fresh fruits and vegetables caused by the scare then ever would have died from the chemical.
Fermi has built or been involved in the design of the magnets for basically ALL of the large colliders worldwide. LEP, LHC, SSC, RHIC, Tevatron (obviously), etc all had significant contributions by Fermi. The fact that every design review missed it was simply amazing. Luckily they were able to come up with a way to fix the surviving magnets and fairly quickly built replacements for the destroyed units.
Interesting topic you brought up, according to this data our current ratio of physicians per 100,000 population is about 300, and according to this data for most of my grandparents childhood it would have been about half that. The really interesting trend in that historical data is that the ratio basically declined from 1850-1953, I wonder what the trend looked like from 1958-2008?
Sure, at the field strength they are trying to push the NbTi magnets they lose superconductivity around 4.2K reference. That's a bad thing considering the amount of energy in the magnets!
It depends on your school, most of my freshman classes (at a top level but not elite engineering school) were mostly a waste of time because I went to a good high school. I also took the opportunity to do a few independent studies and attend some college courses while in high school. Like most things if you aren't held back by really substandard surrounding high school is what you make of it. Oh and as to your point about HS not being enough about learning, you obviously didn't learn some of the most important lessons while in college either =)
Bah, that's why math majors teaching Calc suck, they think you have to DO Calc before you can understand it. When I finally took Calc from a non-major I finally actually understood and learned it. The reason is that we learned the rules and laws and history behind them BEFORE we started using them. Knowing why a piece of mathematics was invented helps normal people to understand how and why to use it. It's also why I understand the difference between the symbolic logic done by a TI-89 and the numeric methods used by a TI-85 =)
Sorry, but if you can't hack Calc you don't belong in math, the physical sciences, comp sci, or engineering. It's a basic tool of all of those disciplines and so anyone planning to peruse a career in those fields should be able to do it. I admit it took me three tries and getting someone who wasn't a math PhD before I understood Calc, and that's one of the reason I didn't end up perusing a degree in comp sci and instead went into the networking side of IT.
Reading comprehension for the win? He indicated that there were two versions of P-chem, one for majors and one for pre-med and other lesser pursuits =)
15 times, not really. Traditional calculations were about 2 to 1, really efficient datacenter cooling today can reach about 5 to 1. I guess their equipment was somewhat older so they were doing about 3 to 1 in their large datacenter.
Hmm, my full backups for an 800 employee company are ~7.5TB, pretty damn close to 10GB/user. This includes email, database, and file servers. So yeah I think the number is definitely in the right ballpark. It's at least close enough to get an order of magnitude calculation for costs.
Ha, we are working towards an archiving solution for our ERP system and accountants are just as bad as anyone. A simple date based approach will NOT work in an ERP system, you need a tool which understands the relationship between objects in the system and which only performs an archive if all related objects fall into the archive period. Plus books are relatively simple from an archive perspective, they have a legally defined life, most ad hoc data is not so neatly categorized.
Good for you. It's great that you not only care enough to adopt an older child but also obviously care about his long term success not just his physical needs.
You really have no idea how a business operates, do you. Between robots and tapes a decent backup policy probably costs way MORE than $5k/year/GB. A single 1TB drive is not a business backup solution, even for a small business. Heck, looking at my last quote my enterprise storage costs ~$10/GB of usable space and my vendor is one of the cheaper ones.
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The problem isn't so much the design lifecycle, it's the cost of upgrades. When you have to essentially rebuild an entire ship to retool the comm infrastructure that's a hell of a lot of cost. They design a hull to sail for 50 years, but the ship will typically have to be refitted multiple time during that span to keep up with newer technology costing several times the initial cost to build it and keeping it out of service for years in total.
The idea behind autonomous high altitude drones is they stay up indefinitely (barring parts breaking) by using solar panels to produce and store enough energy to stay aloft. Today we have thousands of flights a day using much more massive aircraft, I don't think a few extra ultralight drones are a significant increase in the risk associated with aircraft.
It would be much better to use a small fleet of high altitude autonomous drones with communications gear on board. It would be cheaper to startup, cheaper to maintain, easier to upgrade, lower latency, etc. For certain applications satellites will still be needed, but we are at the edge of the next generation of low cost communications brought to us by continuously flying drones flying between 10 and 20 miles up.
Not many people would buy a server as expensive as their car for home use either! =)
Except those numbers are nowhere near reality. My calculations are that running a $36,000 DL 585 G2 at 70% utilization will result in a 3 year power bill for the machine + AC of ~$2,500 @ $.10/KWhr. AC is only about 1/8th of total power usage, so you would have to see a less than 2% increase in failure rate for this strategy to pay off assuming that you incur no measurable increase in downtime and association expenses.
If you're buying DL585's then it's likely that the applications hosted on it have a downtime costs per hour (if not minute) equal to the cost of the hardware. These are the servers that large sections of the NYSE run on for instance.
That is a pretty well established fact
Actually, it's quite the opposite. Only ~5% of trained listeners could reliably tell the difference between a high bitrate mp3 and the original 14.1 recording inABX testing on average samples, so what makes you think that they can hear the difference between 24bit and 16bit? Even if you think you have golden ears and can pick up the difference between high bitrate and lossless then I have to ask, can you hear tones above 16khz at volumes that would not produce hearing loss if the entire mix was at that level? Because again that's a VERY small percentage of the population and it's mostly under 20 years old.
Are you kidding, gun ownership is very high among geeks so a might makes right world wouldn't be so bad today for us. I don't care how muscle bound someone is, a high caliber pistol make all men the same size. Oh and personally I would have little to worry about even without a pistol, 6'3" 220 relatively lean pounds, not all of us are shapeless blobs =)
Better is huge clear tubes of water and plankton, use the plankton to make biodiesel.
Unless high level nuclear waste is leaking directly into your drinking supply in sufficient quantities to raise the radiation level significantly above background levels it's not much of a problem, and breeder reactors eliminate almost all of the high level waste. If it's still hot enough to be dangerous then it's still useful as fuel.
Exactly, look at it this way:How many people are expected to die each year through faults in the storage system if n percent of electricity is produced this way vs how many people are expected to die from the expected increase in global temperature caused by NOT using this storage methodology. If the former is less than the latter then it's a good idea to use the technology. It's like the Alar scare, an order of magnitude more people are estimate to have died from cancer due the deceased consumption of fresh fruits and vegetables caused by the scare then ever would have died from the chemical.
Fermi has built or been involved in the design of the magnets for basically ALL of the large colliders worldwide. LEP, LHC, SSC, RHIC, Tevatron (obviously), etc all had significant contributions by Fermi. The fact that every design review missed it was simply amazing. Luckily they were able to come up with a way to fix the surviving magnets and fairly quickly built replacements for the destroyed units.
Your grandparents had a lot less.
Interesting topic you brought up, according to this data our current ratio of physicians per 100,000 population is about 300, and according to this data for most of my grandparents childhood it would have been about half that. The really interesting trend in that historical data is that the ratio basically declined from 1850-1953, I wonder what the trend looked like from 1958-2008?
Sure, at the field strength they are trying to push the NbTi magnets they lose superconductivity around 4.2K reference. That's a bad thing considering the amount of energy in the magnets!
It depends on your school, most of my freshman classes (at a top level but not elite engineering school) were mostly a waste of time because I went to a good high school. I also took the opportunity to do a few independent studies and attend some college courses while in high school. Like most things if you aren't held back by really substandard surrounding high school is what you make of it. Oh and as to your point about HS not being enough about learning, you obviously didn't learn some of the most important lessons while in college either =)
Bah, that's why math majors teaching Calc suck, they think you have to DO Calc before you can understand it. When I finally took Calc from a non-major I finally actually understood and learned it. The reason is that we learned the rules and laws and history behind them BEFORE we started using them. Knowing why a piece of mathematics was invented helps normal people to understand how and why to use it. It's also why I understand the difference between the symbolic logic done by a TI-89 and the numeric methods used by a TI-85 =)
Sorry, but if you can't hack Calc you don't belong in math, the physical sciences, comp sci, or engineering. It's a basic tool of all of those disciplines and so anyone planning to peruse a career in those fields should be able to do it. I admit it took me three tries and getting someone who wasn't a math PhD before I understood Calc, and that's one of the reason I didn't end up perusing a degree in comp sci and instead went into the networking side of IT.
Reading comprehension for the win? He indicated that there were two versions of P-chem, one for majors and one for pre-med and other lesser pursuits =)
15 times, not really. Traditional calculations were about 2 to 1, really efficient datacenter cooling today can reach about 5 to 1. I guess their equipment was somewhat older so they were doing about 3 to 1 in their large datacenter.
Wow, you just explained how single instance storage works in Exchange, I wonder why it's one of the most popular email packages....
Hmm, my full backups for an 800 employee company are ~7.5TB, pretty damn close to 10GB/user. This includes email, database, and file servers. So yeah I think the number is definitely in the right ballpark. It's at least close enough to get an order of magnitude calculation for costs.
Ha, we are working towards an archiving solution for our ERP system and accountants are just as bad as anyone. A simple date based approach will NOT work in an ERP system, you need a tool which understands the relationship between objects in the system and which only performs an archive if all related objects fall into the archive period. Plus books are relatively simple from an archive perspective, they have a legally defined life, most ad hoc data is not so neatly categorized.
That explains why I can never get accurate information out of MIS!
Good for you. It's great that you not only care enough to adopt an older child but also obviously care about his long term success not just his physical needs.
You really have no idea how a business operates, do you. Between robots and tapes a decent backup policy probably costs way MORE than $5k/year/GB. A single 1TB drive is not a business backup solution, even for a small business. Heck, looking at my last quote my enterprise storage costs ~$10/GB of usable space and my vendor is one of the cheaper ones.