Air resistance does indeed play a part. If you have a hugely over-sized petrol engine then to produce low levels of power the throttle has to be virtually closed. This restriction in the airflow can significantly impact the efficiency of the engine. I suspect the GP has a stupidly large, low-tech engine in an aerodynamically efficient body.
Shutting down cylinders, touched on in the summary, works to counteract this effect. They do literally shut cylinders down - they close all the valves. Fewer cylinders producing a given level of power means more fuel and air per cylinder, so you can open the throttle further, which allows for cleaner airflow and higher efficiency.
Of course, carrying more cylinders than you actually need is inefficient, so any engines which shuts some cylinders down is a pretty stupid choice if you claim to care about efficiency. If you need to pull a trailer, buy a diesel. Diesels don't have a throttle, so this problem doesn't exist.
While you should predict what's going to happen and for the most part be able to adjust your speed only with the throttle (especially on motorways), aggressive engine braking is dangerous because cars aren't fitted with engine braking lights. If your drop two gears and lose 15mph in 50 yards you will at best surprise the person behind you. Do it while they're doing a mirror check or playing with the radio and you're asking to be rear-ended. It is always the person behind's fault if they rear-end you, but most people drive too close and don't pay enough attention, so you have to drive defensively. Even crashes which aren't your fault bend your car and have the potential to injure you.
They don't want to "solve their problem with IPv4". It's not like they've invested billions on 21CN and it can't do IPv6. There was some Cisco bug which meant IPv6 didn't work, so they said their wholesale broadband products (the products ISPs re-sell) don't support IPv6. The Cisco bug is now fixed, but they've apparently not deployed the fix everywhere. That's the story straight from TFA, so quite how they got that summary from it I don't know. BT haven't failed to consider IPv6 support at all, that's pure bullshit. IPv6 doesn't currently work properly on some of BT's kit, but is that because there's no demand so they haven't bothered with the fix? No, no. It can't be that. They must be idiots, or stuck in the past, or part of some fucking huge conspiracy to regress the country to the dark ages.
I've been looking in to the same thing for my server "room" (it's actually a small wicker basket). You might be interested in PSUs designed for Mini-ITX car PCs, which would work for your proper PC, but could also provide 12V out for the Linksys. If you're running from a battery, you do need a PSU designed for car use. The "regular" 12V ones may not work with the low voltage from a draining battery, or the high voltage from a charging one. I intend to use one of those, a battery and a power supply to run my NSLU2 and its USB hard drive, plus my ADSL and WiFi routers.
If you shut the machines off every weekend you'd have discovered those marginal machines one at a time over the course of months. You had a great example of how your current strategy will fuck you over after a power cut but apparently didn't learn the lesson.
You fail at reading comprehension in addition to electronics knowledge. Both 317s I listed were Ts. One was an AT and one was just a T. I gave you a fucking huge clue that the difference was the temperature rating by talking about that difference, but apparently you're too stupid to get the hint. Here you go: The LM317T comes in a TO-220 and is rated to 0 C. The electrically identical LM317AT also comes in a TO-220 but is rated to -40 C. That is a very significant difference and is exactly the kind of difference which distinguishes the components used in consumer electronics than those designed for more robust environments like cars.
My point is, they don't make an LM317T for cars, and a seperate one for consumer grade equipment.
Then tell me why National Semiconductor sell two models of the LM317T with different temperature ratings. Go and see for yourself, I'm not making this up. There is nothing special about National Semiconductor or the 317 - they were just the first manufacturer and component that came into my head. I was rather hoping they'd have some a fancy ceramic mil-spec package as well to prove you even more wrong, but they didn't. Not that such things don't exist, I just can't be bothered to find you an example.
Don't PCs already have a dock? "The bar of icons that sits at the bottom or side of a Mac and provides easy access to Apple applications."
The sounds like a description of the start menu, and its corresponding bar.
Yes it does. There are bazillions of patents with similar names because they cover similar subjects. With only a brief description of a patent it's impossible to know whether it is indeed novel. Fortunately, patents are more than a brief description. The Dock patent does into great detail covering the magnification feature. It's easy to trash a patent by looking at the title and saying "it's been done before". But when you actually read it, it becomes a bit less obvious the novel things the patent claims have actually been done before. Does Claim 120 ring any bells?:
120. The method of claim 117 wherein each icon is displayed within a corresponding tile area having two opposite edges that are respectively located at distances d.sub.1 and d.sub.2 from said cursor, and said other icons are magnified by the factor 1+(d.sub.2'-d.sub.1')/(d.sub.2-d.sub.1), where: d.sub.1=S.times.sine(.pi./2.times.d.sub.1/W) and d.sub.2'=S.times.sine(.pi./2.times.d.sub.2/W), where W is equal to said defined distance, and (S=((H-h)/2)/sine(.pi..times.(h/2)/(W.times.2)), where H is a magnified size for one dimension of said one icon, and h is a default display size for said one dimension.
That's some details of how that nice "hump" is generated when you use the magnification feature. Had you seen specifically that before 1999?
I did say using a heat pump. You use the electricity to pump heat from outside to inside, like an air conditioner in reverse. You put in 1 kW of electricity, you get (say) 3kW of heat. 2 kW of that heat comes from the air or ground outside, you're not creating it, but for the measure of efficiency which matters for home heating - kW of heat in your home per kW of electricity used - heat pumps are more than 100% efficient. Of course in physics terms they aren't more than 100% efficient, but in economic terms they are.
A component is a component, right? An LM317 voltage regulator is an LM317 voltage regulator, right? Wrong. If we take National Semiconductor's range as an example, I expect Linksys would use the LM317T because they don't expect me to operate my NAS below freezing, but I'd damn well hope BMW would use the LM317AT because I don't want part of my $100k car to stop working because the epoxy package of a $0.70 voltage regulator failed at -15 C.
I'd stick to the spanners and module-level repair if I were you.
It never really did anything on most mobos, not even being connected in most cases, but it sure made the rest of the world see a "difference" in speed by toggling the higher number to display.
When the first machines with Turbo buttons (whose purpose was of course to slow the machine down, not speed it up) appeared people certainly would have noticed if they didn't work, because their older software written specifically for a slower CPU would have run ridiculously fast.
In the end, he could claim he was just selling software that users happened to use to violate Blizzard's TOS and EULA with. I've heard the same arguments about BitTorrent and would probably side with the software makers in this case...
It's not the same as BitTorrent at all. BitTorrent has legitimate, legal uses. Glider can only be used, and can only have been developed, in violation of The WoW licence. People don't just happen to use it to violate the licence, the very thing Glider is designed to do is in violation of the WoW license.
You might want to look at USB persist. It saves the state of USB devices through suspend/hibernate rather than re-enumerating them. It works for keeping USB flash drives mounted, it might work for USB TV devices too. Search the intertubes for "SET_USB_PERSIST". I don't know if it's compiled in to the default Ubuntu kernels.
The thing is, even when you are indeed helping solve whatever problem you choose to participate in, in reality the design of those projects is to take advantage of the unused cycles of a PC while doing its "regular" scheduled work. That is, to maximize the usage of the PC.
The design of these distributed computing projects is intended to solve some research problem. They do not exist to create a use for spare CPU cycles, that's just a marketing gimmick to get them free computing power. I wouldn't be surprised if my Mac Mini and PS3 were fairly competitive with supercomputers in terms of ommph-per-watt, so I can't see any good reason not to leave them on doing useful work.
If you insist on limiting yourself to commodity hardware you're going to have a lot of problems to solve. Why not pay someone to do that for you and just buy a system? Macs running OS X sleep properly. I bet HPs running Windows and Dells running Ubuntu do too.
I'm just going to throw this out there- I was under the impression that the so-called "electrical field" was actually heat; i.e., all this device does is heat up the fuel in the supply line to reduce its viscosity.
The absolute value isn't important. It's considered special because exactly the same vehicle with exactly the same engine was only doing 32mpg without this device.
Why the hell do you get modded insightful when you're complaining about them not doing something they have actually done?
RTFP. They used more than one test rig. Before putting it on an actual engine they did controlled experiments measuring viscosity, drop size, blah blah blah. They didn't just bolt it on a car and drive it around for a few months, which you could have ascertained for yourself in less than the time it took you to write your diatribe.
As someone with a physics degree who has actually read the paper, I'm not so quick to dismiss it. It's not my field, but the theory makes some sense and the experimental methods don't appear obviously flawed. Of course I haven't repeated the experiments and nor, as far as I know, has anybody else yet. So it's wait and see I guess, there will be no shortage of people wanting to try and repeat this or - if your mentality is prevalent - disprove it.
Slashdot Mirror
[citation needed]
Air resistance does indeed play a part. If you have a hugely over-sized petrol engine then to produce low levels of power the throttle has to be virtually closed. This restriction in the airflow can significantly impact the efficiency of the engine. I suspect the GP has a stupidly large, low-tech engine in an aerodynamically efficient body.
Shutting down cylinders, touched on in the summary, works to counteract this effect. They do literally shut cylinders down - they close all the valves. Fewer cylinders producing a given level of power means more fuel and air per cylinder, so you can open the throttle further, which allows for cleaner airflow and higher efficiency.
Of course, carrying more cylinders than you actually need is inefficient, so any engines which shuts some cylinders down is a pretty stupid choice if you claim to care about efficiency. If you need to pull a trailer, buy a diesel. Diesels don't have a throttle, so this problem doesn't exist.
While you should predict what's going to happen and for the most part be able to adjust your speed only with the throttle (especially on motorways), aggressive engine braking is dangerous because cars aren't fitted with engine braking lights. If your drop two gears and lose 15mph in 50 yards you will at best surprise the person behind you. Do it while they're doing a mirror check or playing with the radio and you're asking to be rear-ended. It is always the person behind's fault if they rear-end you, but most people drive too close and don't pay enough attention, so you have to drive defensively. Even crashes which aren't your fault bend your car and have the potential to injure you.
They don't want to "solve their problem with IPv4". It's not like they've invested billions on 21CN and it can't do IPv6. There was some Cisco bug which meant IPv6 didn't work, so they said their wholesale broadband products (the products ISPs re-sell) don't support IPv6. The Cisco bug is now fixed, but they've apparently not deployed the fix everywhere. That's the story straight from TFA, so quite how they got that summary from it I don't know. BT haven't failed to consider IPv6 support at all, that's pure bullshit. IPv6 doesn't currently work properly on some of BT's kit, but is that because there's no demand so they haven't bothered with the fix? No, no. It can't be that. They must be idiots, or stuck in the past, or part of some fucking huge conspiracy to regress the country to the dark ages.
I've been looking in to the same thing for my server "room" (it's actually a small wicker basket). You might be interested in PSUs designed for Mini-ITX car PCs, which would work for your proper PC, but could also provide 12V out for the Linksys. If you're running from a battery, you do need a PSU designed for car use. The "regular" 12V ones may not work with the low voltage from a draining battery, or the high voltage from a charging one. I intend to use one of those, a battery and a power supply to run my NSLU2 and its USB hard drive, plus my ADSL and WiFi routers.
If you shut the machines off every weekend you'd have discovered those marginal machines one at a time over the course of months. You had a great example of how your current strategy will fuck you over after a power cut but apparently didn't learn the lesson.
You fail at reading comprehension in addition to electronics knowledge. Both 317s I listed were Ts. One was an AT and one was just a T. I gave you a fucking huge clue that the difference was the temperature rating by talking about that difference, but apparently you're too stupid to get the hint. Here you go: The LM317T comes in a TO-220 and is rated to 0 C. The electrically identical LM317AT also comes in a TO-220 but is rated to -40 C. That is a very significant difference and is exactly the kind of difference which distinguishes the components used in consumer electronics than those designed for more robust environments like cars.
Then tell me why National Semiconductor sell two models of the LM317T with different temperature ratings. Go and see for yourself, I'm not making this up. There is nothing special about National Semiconductor or the 317 - they were just the first manufacturer and component that came into my head. I was rather hoping they'd have some a fancy ceramic mil-spec package as well to prove you even more wrong, but they didn't. Not that such things don't exist, I just can't be bothered to find you an example.
Yes it does. There are bazillions of patents with similar names because they cover similar subjects. With only a brief description of a patent it's impossible to know whether it is indeed novel. Fortunately, patents are more than a brief description. The Dock patent does into great detail covering the magnification feature. It's easy to trash a patent by looking at the title and saying "it's been done before". But when you actually read it, it becomes a bit less obvious the novel things the patent claims have actually been done before. Does Claim 120 ring any bells?:
That's some details of how that nice "hump" is generated when you use the magnification feature. Had you seen specifically that before 1999?
I did say using a heat pump. You use the electricity to pump heat from outside to inside, like an air conditioner in reverse. You put in 1 kW of electricity, you get (say) 3kW of heat. 2 kW of that heat comes from the air or ground outside, you're not creating it, but for the measure of efficiency which matters for home heating - kW of heat in your home per kW of electricity used - heat pumps are more than 100% efficient. Of course in physics terms they aren't more than 100% efficient, but in economic terms they are.
A component is a component, right? An LM317 voltage regulator is an LM317 voltage regulator, right? Wrong. If we take National Semiconductor's range as an example, I expect Linksys would use the LM317T because they don't expect me to operate my NAS below freezing, but I'd damn well hope BMW would use the LM317AT because I don't want part of my $100k car to stop working because the epoxy package of a $0.70 voltage regulator failed at -15 C.
I'd stick to the spanners and module-level repair if I were you.
When the first machines with Turbo buttons (whose purpose was of course to slow the machine down, not speed it up) appeared people certainly would have noticed if they didn't work, because their older software written specifically for a slower CPU would have run ridiculously fast.
You can get more than 100% efficiency (heat output/electricity input) using a heat pump, so 100% efficiency really isn't so great.
The printer-friendly version isn't ad-free, it's sponsored by HP. I agree with the sentiment though.
Ubuntu works fine on my Eee - wireless, hotkeys, sleep, compiz etc. There are about 7000 wikis and blogs detailing what's involved.
GPL doesn't stop you making a proprietary fork any more than BSD does.
Nor in British schools.
It's not the same as BitTorrent at all. BitTorrent has legitimate, legal uses. Glider can only be used, and can only have been developed, in violation of The WoW licence. People don't just happen to use it to violate the licence, the very thing Glider is designed to do is in violation of the WoW license.
You might want to look at USB persist. It saves the state of USB devices through suspend/hibernate rather than re-enumerating them. It works for keeping USB flash drives mounted, it might work for USB TV devices too. Search the intertubes for "SET_USB_PERSIST". I don't know if it's compiled in to the default Ubuntu kernels.
The design of these distributed computing projects is intended to solve some research problem. They do not exist to create a use for spare CPU cycles, that's just a marketing gimmick to get them free computing power. I wouldn't be surprised if my Mac Mini and PS3 were fairly competitive with supercomputers in terms of ommph-per-watt, so I can't see any good reason not to leave them on doing useful work.
If you insist on limiting yourself to commodity hardware you're going to have a lot of problems to solve. Why not pay someone to do that for you and just buy a system? Macs running OS X sleep properly. I bet HPs running Windows and Dells running Ubuntu do too.
-1 life
The second link in TFS his paper, published in a respected scientific journal. If ignorance is bliss, you must be one happy camper.
It only consumes 0.1W, so heating is negligible.
The absolute value isn't important. It's considered special because exactly the same vehicle with exactly the same engine was only doing 32mpg without this device.
Why the hell do you get modded insightful when you're complaining about them not doing something they have actually done?
RTFP. They used more than one test rig. Before putting it on an actual engine they did controlled experiments measuring viscosity, drop size, blah blah blah. They didn't just bolt it on a car and drive it around for a few months, which you could have ascertained for yourself in less than the time it took you to write your diatribe.
As someone with a physics degree who has actually read the paper, I'm not so quick to dismiss it. It's not my field, but the theory makes some sense and the experimental methods don't appear obviously flawed. Of course I haven't repeated the experiments and nor, as far as I know, has anybody else yet. So it's wait and see I guess, there will be no shortage of people wanting to try and repeat this or - if your mentality is prevalent - disprove it.