I love some of the things you could do to a serial hybrid, but they have problems too: 1) The electric motor has to cope with 100% of the peak load = larger and heavier. 2) It needs a seperate generator - more weight and space.
Whereas in a parallel hybrid the electric motor only neads to cope with topping up the thrust required, and can double as a generator the rest of the time. Overall it's alot more weight efficient. Depending upon the transmission design, the engine can still run at optimal RPM and have the electic motor compensate.
One thing i'd love to see in a serial hybrid is a small but high speed (60000rpm) gas turbine used as the power plant. They can be very efficient and generating electricity from these speeds would be simplified - power electronics in the variable speed drive inverter run well at these sorts of frequencies, reduces the size of filters required.
Simple economics - the cost of manufacture is factored into the sale price. If the panels eventually pay for themselves, then that covers the manufacture costs - electrical, raw materials or otherwise. Sure the factory might get a better price for electricity than regular consumers, but there's also raw materials, labour and profit that's included in the price tag.
Simple economics - the cost of generation is factored into the sale price. If the panels eventually pay for themselves, then not only have you paid for the sales profit, but also the manufacture costs, electrical or otherwise. The factory might get a better price than electricity than regular consumers, but it's within the ballpark.
In order to drive a heat engine or turbine you need a temperature differntial - the ground is the hot side and the air is the cold side. Geothermal heats water to make steam, steam drives turbine, steam is released back to environment or is recycled by condensation, releasing that heat of vaporisation to the atmosphere.
That might be true, but alot of aluminium electro-refineries have set up in tasmania because of the cheap hydro power. As a result the state has a disproportionately high electrical consumption.
Geothermal is far friendlier than fossil fuels or nuclear, but it does have alot of downsides - Complex machinery and processes, high water usage, high maintenance on the wells. All of those have a pollution aspect to them. Plus it's still releasing extra heat to the environment.
Because at mains voltage 50Hz, the amount of radiated power is extremely low, and the antenna woud have to be incredibly big. You could get more power through induction, but then you'd have to be very close (milimetres).
Pretty impractical except for a dedicated charging pad (which has already featured on slashdot).
"We need feature X but we can't afford it so let's get someone to do it for free".
Nice strawman there.
Chances are a company is already using or is about to use an open source application, but just needs a few tweaks to make it fit well. The request is unlikely to come from the board room - it's probably by the IT or operational staff. A manager somewhere will need to sign off the operational or capital expense for the request - just as they would with commercial closed source software - and all the board will see is the P&L sheet.
Open source developers will develop your platform to develop the features they want. It happens naturally
That's a gross simplification. Developers are (usually) humans too, and often enjoy pleasing others and seeing their software adopted. The direction could be set via an online community forum, or specific users requests.
As for the actual request - depending upon the nature of the software and the developers, a "buy everyone pizza" code-a-thon might work. Alternatively the customer might put together a requirements spec, submit it to the developer and receive a formal quotation. The fact that they have to write the check to a.org versus.com makes little difference.
Crossing the street and driving a car are both 'decided risks" too. It's just that infrequent but large scale fatalities generate more paranoia and subsequently bigger headlines than daily individual fatalities.
I think a planet size object hitting the Earth is less of a "mass extinction and making it hard for large animals" event and more of a "completely liquifying the Earth and turning everything that was on it into molten lava goo" event.
I dont know what your point it. By DEFINITION, a "pure bred" animal has a known, but small component of mutt. Many breeders purposely introduce other breeds to add back in desirable traits and add hybrid vigor, then breed back through a few generations to get back to "pure bred" status. Dont quote me on it but it's something like 7/8th's.
A completely seperate classification is pedigree, and that's where an animal fits the formal definition of the breed as determined by that particular association. It's a subjective quality rating.
Both terms have their use and it's far more than just stroking ego - it's critically important for breeders so that they can maintain long term standards. The trouble comes when individual owners get prissy about it, as they're all too often completely removed from the breding loop.
I agree - the technology itself was fairly sound, especially in the later versions
The main issue were definitely market implementation: 1) Software stack - why were the basic stacks so buggy and counter-intuative. Most windows users had to pirate a third party stack to do anything usefull. 2) Price - I rarely saw anything bluetooth (even generic brands) for under A$100 (US$70) which is rip off for a wireless keyboard or mouse.
I daresay both of these were caused due to restrictive and expensive licensing schemes. Had it been cheaper alot of poeple could have made more money through increased sales.
You should hear what this crazy George W Bush was doing.... Winning an election with a minority, reading books upside down, sending people off to illegal wars and making hilarous mistakes in speeches.
All polititians look stupid if all you see is foreign news - bad news travels much faster. That said alot of them look pretty terrible in the local new too...
It's not just 1 charger - I like to have several around home and the office. Plus the cost of headphones, car cradles etc all adds up and the redundant items you accumulate during upgrades are just sheer waste.
The visble arms of our galaxy's spiral aren't a fixed buch of stars clustered togther, it's a density wave that travels around the disk. Our solar system will pass in and out of various arms (eventually) as the density wave is travelling at a different speed to the actual rotation.
But if you have enough of them and the geometrey is right, you can reconstruct where they cam from and develop an image. I'd say this is a telescope too, just not an optical one.
I think you underestimate the apathy of most users.
In Australia, we busted the ISP's about their fake "Unlimited" plans and the market introduced competatively pricing based tiered caps from 2GB/month all the way up to 120GB. A common and decent price point is about 20-30GB/month for A$50.
Most poeple still dont care about adverts, they dont chew enough bandwidth to worry about compared to the other bulk downloads.
It's highly likely that your hardware just cant cope.
Torrents create a large number of TCP connections and this gives the connection tracking NAT modules of many home routers a hard time - especially the cheaper models with less RAM and slower CPU's. This will then affect any other TCP connection, including email, web browsing and name resolution.
Once you stop the torrents and the connections timeout from the tracking tables, the system performance can often recover. Most routers require a reboot.
Try reducing the number of simultaneous connections that your torrent software allows.
Deserts seem to have no problems radiating their daytime heat into the night sky - so well that they can get below freezing. Either fin fans or a ground loop could be used as the heat sink.
If you think The Internet is all about web and chat, you're missing the point.
It is amasing that I can have IP level access to any machine, anywhere in the world. The possabilities are endless. Recent innovations include: * VPN, Remote Access and other tunnels - allows for telecommuting, remote support etc. * VOIP - cheap and scalable solution to circuit switched copper lines * Web Services - sharing data between applications in a platform independant way
Add to that email, google, wikipedia etc and there's a fantastic amount of usefull stuff that the internet provides.
Handguns have only one purpose.... well OK two - to turn off your TV when you lose the remote, and to KILL PEOPLE. I dont see a problem with a dangerous weapon that requires licenses etc to have it's ballistic fingerprint taken.
It's completely unrealistic to compare it to taking human fingerprints at birth.
Slashdot Mirror
I love some of the things you could do to a serial hybrid, but they have problems too:
1) The electric motor has to cope with 100% of the peak load = larger and heavier.
2) It needs a seperate generator - more weight and space.
Whereas in a parallel hybrid the electric motor only neads to cope with topping up the thrust required, and can double as a generator the rest of the time. Overall it's alot more weight efficient. Depending upon the transmission design, the engine can still run at optimal RPM and have the electic motor compensate.
One thing i'd love to see in a serial hybrid is a small but high speed (60000rpm) gas turbine used as the power plant. They can be very efficient and generating electricity from these speeds would be simplified - power electronics in the variable speed drive inverter run well at these sorts of frequencies, reduces the size of filters required.
Man I hate it when people ditch helicopters. Argh!!!!!
I disagree that he was a griefer. Yes, he was giving people grief, but not in the "stand in the door" or "foil your own teammates" kind of way.
It was their own expectations that were the problem. He was doing exactly what the game was supposed to be - killing the villans.
That's bogus. Repeating from my other post -
Simple economics - the cost of manufacture is factored into the sale price. If the panels eventually pay for themselves, then that covers the manufacture costs - electrical, raw materials or otherwise. Sure the factory might get a better price for electricity than regular consumers, but there's also raw materials, labour and profit that's included in the price tag.
Simple economics - the cost of generation is factored into the sale price. If the panels eventually pay for themselves, then not only have you paid for the sales profit, but also the manufacture costs, electrical or otherwise. The factory might get a better price than electricity than regular consumers, but it's within the ballpark.
In order to drive a heat engine or turbine you need a temperature differntial - the ground is the hot side and the air is the cold side. Geothermal heats water to make steam, steam drives turbine, steam is released back to environment or is recycled by condensation, releasing that heat of vaporisation to the atmosphere.
That might be true, but alot of aluminium electro-refineries have set up in tasmania because of the cheap hydro power. As a result the state has a disproportionately high electrical consumption.
Geothermal is far friendlier than fossil fuels or nuclear, but it does have alot of downsides - Complex machinery and processes, high water usage, high maintenance on the wells. All of those have a pollution aspect to them. Plus it's still releasing extra heat to the environment.
Because at mains voltage 50Hz, the amount of radiated power is extremely low, and the antenna woud have to be incredibly big. You could get more power through induction, but then you'd have to be very close (milimetres).
Pretty impractical except for a dedicated charging pad (which has already featured on slashdot).
"We need feature X but we can't afford it so let's get someone to do it for free".
Nice strawman there.
Chances are a company is already using or is about to use an open source application, but just needs a few tweaks to make it fit well. The request is unlikely to come from the board room - it's probably by the IT or operational staff. A manager somewhere will need to sign off the operational or capital expense for the request - just as they would with commercial closed source software - and all the board will see is the P&L sheet.
Open source developers will develop your platform to develop the features they want. It happens naturally
That's a gross simplification. Developers are (usually) humans too, and often enjoy pleasing others and seeing their software adopted. The direction could be set via an online community forum, or specific users requests.
As for the actual request - depending upon the nature of the software and the developers, a "buy everyone pizza" code-a-thon might work. Alternatively the customer might put together a requirements spec, submit it to the developer and receive a formal quotation. The fact that they have to write the check to a .org versus .com makes little difference.
Crossing the street and driving a car are both 'decided risks" too. It's just that infrequent but large scale fatalities generate more paranoia and subsequently bigger headlines than daily individual fatalities.
I think a planet size object hitting the Earth is less of a "mass extinction and making it hard for large animals" event and more of a "completely liquifying the Earth and turning everything that was on it into molten lava goo" event.
Time to feed the trolls....
I dont know what your point it. By DEFINITION, a "pure bred" animal has a known, but small component of mutt. Many breeders purposely introduce other breeds to add back in desirable traits and add hybrid vigor, then breed back through a few generations to get back to "pure bred" status. Dont quote me on it but it's something like 7/8th's.
A completely seperate classification is pedigree, and that's where an animal fits the formal definition of the breed as determined by that particular association. It's a subjective quality rating.
Both terms have their use and it's far more than just stroking ego - it's critically important for breeders so that they can maintain long term standards. The trouble comes when individual owners get prissy about it, as they're all too often completely removed from the breding loop.
I agree - the technology itself was fairly sound, especially in the later versions
The main issue were definitely market implementation:
1) Software stack - why were the basic stacks so buggy and counter-intuative. Most windows users had to pirate a third party stack to do anything usefull.
2) Price - I rarely saw anything bluetooth (even generic brands) for under A$100 (US$70) which is rip off for a wireless keyboard or mouse.
I daresay both of these were caused due to restrictive and expensive licensing schemes. Had it been cheaper alot of poeple could have made more money through increased sales.
You should hear what this crazy George W Bush was doing....
Winning an election with a minority, reading books upside down, sending people off to illegal wars and making hilarous mistakes in speeches.
All polititians look stupid if all you see is foreign news - bad news travels much faster. That said alot of them look pretty terrible in the local new too ...
It's not just 1 charger - I like to have several around home and the office. Plus the cost of headphones, car cradles etc all adds up and the redundant items you accumulate during upgrades are just sheer waste.
The visble arms of our galaxy's spiral aren't a fixed buch of stars clustered togther, it's a density wave that travels around the disk. Our solar system will pass in and out of various arms (eventually) as the density wave is travelling at a different speed to the actual rotation.
And a CCD pixel is just a photon detector ....
But if you have enough of them and the geometrey is right, you can reconstruct where they cam from and develop an image. I'd say this is a telescope too, just not an optical one.
I think you underestimate the apathy of most users.
In Australia, we busted the ISP's about their fake "Unlimited" plans and the market introduced competatively pricing based tiered caps from 2GB/month all the way up to 120GB. A common and decent price point is about 20-30GB/month for A$50.
Most poeple still dont care about adverts, they dont chew enough bandwidth to worry about compared to the other bulk downloads.
It's highly likely that your hardware just cant cope.
Torrents create a large number of TCP connections and this gives the connection tracking NAT modules of many home routers a hard time - especially the cheaper models with less RAM and slower CPU's. This will then affect any other TCP connection, including email, web browsing and name resolution.
Once you stop the torrents and the connections timeout from the tracking tables, the system performance can often recover. Most routers require a reboot.
Try reducing the number of simultaneous connections that your torrent software allows.
Yes, but dont forget that the energy of a UV photon is higher than a red photon.
Whilst the overall percentage of UV may be low, it still represents a significant portion of the total energy.
Deserts seem to have no problems radiating their daytime heat into the night sky - so well that they can get below freezing. Either fin fans or a ground loop could be used as the heat sink.
The ground effect on aerofoils may be a little differnt.
What about the reaction force of the air against the ground? Does that translate into higher pressure in the "jet" and thus more thrust?
If you think The Internet is all about web and chat, you're missing the point.
It is amasing that I can have IP level access to any machine, anywhere in the world. The possabilities are endless. Recent innovations include:
* VPN, Remote Access and other tunnels - allows for telecommuting, remote support etc.
* VOIP - cheap and scalable solution to circuit switched copper lines
* Web Services - sharing data between applications in a platform independant way
Add to that email, google, wikipedia etc and there's a fantastic amount of usefull stuff that the internet provides.
Handguns have only one purpose.... well OK two - to turn off your TV when you lose the remote, and to KILL PEOPLE. I dont see a problem with a dangerous weapon that requires licenses etc to have it's ballistic fingerprint taken.
It's completely unrealistic to compare it to taking human fingerprints at birth.