Genetic programming works great if you a looking for a 'close enough' result. Things like machine intelligence and control systems lend themselves to such evolution, as you can change various constraints, tweak an algorithm, to get a similar, but not exactly the same, result. It can respond slightly faster, or be slightly more accurate, and your fitness test will select from that.
The problem is that our current programming paradigm requires exactness. It either works or it doesn't, and there is no gray area in between to select within. We have no idea how to program something which could allow that.
After reading the article I think what it actually means is that it can be driven in electric only mode at slower speeds and emssions lower than the Prius or let the gas turbines kick in for a lot of power
It's actually completely the opposite. It runs 205mph on electric only, with the gas turbines as a completely detached electric generator. The gas turbines provide no propulsive power what so ever. This is how an electric vehicle should be produced, and not the abomination of a combined drive train like the Prius.
The Mini is German, while Jaguar is Indian... hardly both British companies. Besides which, independent electric motors for each wheel is not a new concept, and that Mini was not the first experimental vehicle to have them.
KERS was a failure. They put such restrictions on the amount of energy you could store and release with it per lap, no one could justify the weight it took up.
I suspect it is so they can just run electric cables to each wheel hub instead of a single electric motor with 4 drive shafts etc. More energy efficient.
But it produces terrible handling and ride quality. Unsprung weight, such as a 150hp motor sitting inside a wheel hub, is very bad. You're much more likely to see four independent axles, each with its own motor attached at the center-line of the car.
You don't "coast" on 195hp. Gas turbines run most efficient at full speed, so you're either going to have 0kW, 73kW, or 145kW of generation capacity, depending on your consumption and battery levels. That's well over three times the capacity the Prius offers, and probably enough to go 150mph sustained.
1) It uses gas. (and everything else uses diesel, so you have to carry another thing around logistically)
Completely wrong. Like most other gas turbine engines, it can run on just about anything. It can run on gasoline, diesel, or any blend of kerosene. The US Army runs theirs on JP-8, jet fuel, as that simplifies their logistics. The Australian Army runs theirs on diesel, as that simplifies their logistics.
4) It is really LOUD. (considering its a tank, that's sayin' something!)
From what I've heard, it's actually surprisingly quiet. The loudest thing you hear is the noise of its tracks, rather than the diesel engines of traditional armored vehicles.
however you're still dependent on oil, so I see this as a complicated confusing step backwards.
No, you are dependent on combustible fuel. You can run a gas turbine on just about anything that is fluid and burns. This can be traditional petroleum based fuels, methane, coal gas. The only thing you have to worry about is fuel with hard particulate, as that will tear up the hot section.
You can either use a turbine to extract the thermal energy directly, or you can use a heat exchanger to warm the intake and lighten the load on the compressor. The first is the basic concept of gas turbine engine, and the second is heavy and costly such that it's only worth doing on big industrial generators. If you're referring to thermoelectric generators, those are of too low efficiency to even consider using.
I'm a little suspicious of the emission claims though. How much of that is from plugin? I can't imagine turbine->electric->battery->motors is an efficient drive train.
Emissions have nothing to do with the drive train. Gas turbines are very 'clean' because they run at temperatures and pressures several times that of a standard reciprocating engine, and don't have cold cylinder walls that could hinder combustion. It allows for a more combustion. The trade off is that these higher temperatures also result in the production of much higher volumes of nitrous oxides.
Now for efficiency of the drive train, induction motors and generators both operate at well above 90% efficiency for most of their operating range. If you consider losses from the generator, storage device, and motor combined, you're still comparable or better to a mechanical transmission. In addition to that, heat engines all have an optimum speed that they operate at. Using an electrical transmission and a buffer allows you to keep that generator running at peak efficiency, rather than spooling it up and down.
That all changed quickly right after Amazon took over. I quit volunteering my time to improve the site, as did many other casual readers who simply wanted a better system for their own reference and entertainment. I still use IMDB to discover older movies and television series which might interest me, but I have no desire to try to submit corrections.
You may want to consider TheMovieDb.org and TheTVDB.com. They started up in response to IMDb restricting their content and images, and exist to provide community-sourced metadata and artwork for use in HTPCs.
Seek time is a function of how far the head has to move, and how far the platter has to spin. The 15k drives have much smaller platters and it takes less time to spin around to the start of the data, resulting in average seeks that are less than half that of 7.2k drives.
Sequential throughput is a function of linear speed, and data density. Since 7.2k drives have much larger diameter platters, their linear speed is nearly comparable to that of 15k drives, and far exceeding 10k drives. For that specific type of loading, 7.2k drives perform as well as 15k drives, at a much reduced cost.
If you are trying to access a fragmented file system, you are are accessing multiple files simultaneously, seeking comes into play and the better seek performance of 10k and 15k drives becomes advantageous over pure sequential throughput. Since this write would be a single sequential stream to a supposedly clean file system, 15k drives would provide no benefit over standard consumer level 7.2k drives.
Likely going to downsample it anyways since the full resolution file is obnoxiously large.
How is it obnoxiously large? Hard drive space is dirt cheap. 2TB drives are readily available for $100. You can easily fit 60-80 movies on that. You would really spend rather spend months of CPU time to recompress all that video, than simply pay an extra $1 per movie for the extra storage space needed?
15K disks don't provide high sequential throughput. Their high rotational speed is offset by reduced density and platter diameter. Their purpose is to provide low latency for more random access.
Your math is wrong. The video is only 12-bits per pixel, not 24. It's an 8-bit grayscale channel at full resolution, and two 8-bit color channels at quarter resolution.
A satellite without propulsion is a dead satellite. LEO satellites require fuel for occasional boosts to prevent reentry. GEO satellites require fuel or else they will drift off station. Everything needs some reserve to push it out of the way once its functional life is up, and let other satellites take its place.
Aircraft have aerodynamic control surfaces to maneuver, spacecraft must do everything with reaction thrust. Not only do you have a limited amount of fuel, of which you cannot get more, but you have to worry about dousing others in the formation with your exhaust. Formation flight is generally for the purpose of some sort of phased array telescope, and you don't want to gunk up your optics with rocket fuel.
The homosexual community distorted the word in the first place. It used to just mean 'happy'. For that matter, a 'fag' was a cigarette, and 'queer' just meant 'strange'.
For what its worth, the ISP was not bitching about those users. They were using it as an advertisement to people on their cheaper, capped subscriptions, "Look just how much you can download if you upgrade to our more expensive, uncapped subscriptions!"
No. All of the connections that company offers are 'always on'. They offer some cheaper subscriptions with bandwidth caps, and other more expensive ones with no stated cap, hence 'unlimited'.
Slashdot Mirror
Genetic programming works great if you a looking for a 'close enough' result. Things like machine intelligence and control systems lend themselves to such evolution, as you can change various constraints, tweak an algorithm, to get a similar, but not exactly the same, result. It can respond slightly faster, or be slightly more accurate, and your fitness test will select from that.
The problem is that our current programming paradigm requires exactness. It either works or it doesn't, and there is no gray area in between to select within. We have no idea how to program something which could allow that.
Mixing and random mutation of genetic code can cause beneficial outcomes. Mixing and random mutation of machine code merely causes things to break.
After reading the article I think what it actually means is that it can be driven in electric only mode at slower speeds and emssions lower than the Prius or let the gas turbines kick in for a lot of power
It's actually completely the opposite. It runs 205mph on electric only, with the gas turbines as a completely detached electric generator. The gas turbines provide no propulsive power what so ever. This is how an electric vehicle should be produced, and not the abomination of a combined drive train like the Prius.
The Mini is German, while Jaguar is Indian... hardly both British companies. Besides which, independent electric motors for each wheel is not a new concept, and that Mini was not the first experimental vehicle to have them.
KERS was a failure. They put such restrictions on the amount of energy you could store and release with it per lap, no one could justify the weight it took up.
I suspect it is so they can just run electric cables to each wheel hub instead of a single electric motor with 4 drive shafts etc. More energy efficient.
But it produces terrible handling and ride quality. Unsprung weight, such as a 150hp motor sitting inside a wheel hub, is very bad. You're much more likely to see four independent axles, each with its own motor attached at the center-line of the car.
coast home using the tiny power from the turbine
You don't "coast" on 195hp. Gas turbines run most efficient at full speed, so you're either going to have 0kW, 73kW, or 145kW of generation capacity, depending on your consumption and battery levels. That's well over three times the capacity the Prius offers, and probably enough to go 150mph sustained.
1) It uses gas. (and everything else uses diesel, so you have to carry another thing around logistically)
Completely wrong. Like most other gas turbine engines, it can run on just about anything. It can run on gasoline, diesel, or any blend of kerosene. The US Army runs theirs on JP-8, jet fuel, as that simplifies their logistics. The Australian Army runs theirs on diesel, as that simplifies their logistics.
4) It is really LOUD. (considering its a tank, that's sayin' something!)
From what I've heard, it's actually surprisingly quiet. The loudest thing you hear is the noise of its tracks, rather than the diesel engines of traditional armored vehicles.
however you're still dependent on oil, so I see this as a complicated confusing step backwards.
No, you are dependent on combustible fuel. You can run a gas turbine on just about anything that is fluid and burns. This can be traditional petroleum based fuels, methane, coal gas. The only thing you have to worry about is fuel with hard particulate, as that will tear up the hot section.
You can either use a turbine to extract the thermal energy directly, or you can use a heat exchanger to warm the intake and lighten the load on the compressor. The first is the basic concept of gas turbine engine, and the second is heavy and costly such that it's only worth doing on big industrial generators. If you're referring to thermoelectric generators, those are of too low efficiency to even consider using.
Yes, that's about the size of what you would use as a generator in a car.
I'm a little suspicious of the emission claims though. How much of that is from plugin? I can't imagine turbine->electric->battery->motors is an efficient drive train.
Emissions have nothing to do with the drive train. Gas turbines are very 'clean' because they run at temperatures and pressures several times that of a standard reciprocating engine, and don't have cold cylinder walls that could hinder combustion. It allows for a more combustion. The trade off is that these higher temperatures also result in the production of much higher volumes of nitrous oxides.
Now for efficiency of the drive train, induction motors and generators both operate at well above 90% efficiency for most of their operating range. If you consider losses from the generator, storage device, and motor combined, you're still comparable or better to a mechanical transmission. In addition to that, heat engines all have an optimum speed that they operate at. Using an electrical transmission and a buffer allows you to keep that generator running at peak efficiency, rather than spooling it up and down.
They're not required to charge more, they just need to do so to turn a profit.
That all changed quickly right after Amazon took over. I quit volunteering my time to improve the site, as did many other casual readers who simply wanted a better system for their own reference and entertainment. I still use IMDB to discover older movies and television series which might interest me, but I have no desire to try to submit corrections.
You may want to consider TheMovieDb.org and TheTVDB.com. They started up in response to IMDb restricting their content and images, and exist to provide community-sourced metadata and artwork for use in HTPCs.
Seek time is a function of how far the head has to move, and how far the platter has to spin. The 15k drives have much smaller platters and it takes less time to spin around to the start of the data, resulting in average seeks that are less than half that of 7.2k drives.
Sequential throughput is a function of linear speed, and data density. Since 7.2k drives have much larger diameter platters, their linear speed is nearly comparable to that of 15k drives, and far exceeding 10k drives. For that specific type of loading, 7.2k drives perform as well as 15k drives, at a much reduced cost.
If you are trying to access a fragmented file system, you are are accessing multiple files simultaneously, seeking comes into play and the better seek performance of 10k and 15k drives becomes advantageous over pure sequential throughput. Since this write would be a single sequential stream to a supposedly clean file system, 15k drives would provide no benefit over standard consumer level 7.2k drives.
AnyDVD HD doesn't touch HDCP, as HDCP doesn't exist on Bluray content.
Likely going to downsample it anyways since the full resolution file is obnoxiously large.
How is it obnoxiously large? Hard drive space is dirt cheap. 2TB drives are readily available for $100. You can easily fit 60-80 movies on that. You would really spend rather spend months of CPU time to recompress all that video, than simply pay an extra $1 per movie for the extra storage space needed?
15K disks don't provide high sequential throughput. Their high rotational speed is offset by reduced density and platter diameter. Their purpose is to provide low latency for more random access.
Your math is wrong. The video is only 12-bits per pixel, not 24. It's an 8-bit grayscale channel at full resolution, and two 8-bit color channels at quarter resolution.
A satellite without propulsion is a dead satellite. LEO satellites require fuel for occasional boosts to prevent reentry. GEO satellites require fuel or else they will drift off station. Everything needs some reserve to push it out of the way once its functional life is up, and let other satellites take its place.
Aircraft have aerodynamic control surfaces to maneuver, spacecraft must do everything with reaction thrust. Not only do you have a limited amount of fuel, of which you cannot get more, but you have to worry about dousing others in the formation with your exhaust. Formation flight is generally for the purpose of some sort of phased array telescope, and you don't want to gunk up your optics with rocket fuel.
The homosexual community distorted the word in the first place. It used to just mean 'happy'. For that matter, a 'fag' was a cigarette, and 'queer' just meant 'strange'.
He could have had a MAC-10 or a Thompson....
Nominal is 120V, with +-6V being considered within tolerance. The 240V systems are just provided through a pair of 120V lines at opposite voltage.
For what its worth, the ISP was not bitching about those users. They were using it as an advertisement to people on their cheaper, capped subscriptions, "Look just how much you can download if you upgrade to our more expensive, uncapped subscriptions!"
No. All of the connections that company offers are 'always on'. They offer some cheaper subscriptions with bandwidth caps, and other more expensive ones with no stated cap, hence 'unlimited'.