Depends. LED's are more efficient when overdriven with high current pulses, with the duty cycle controlling the overall power level. 100% brightness might be 5x rated (continuous) current at a 20% duty cycle.
Really long answer: Yes, it's technically very demanding at the best of times, let alone when you have to deal with size and battery power constraints.
Sorry, I should be clearer, it is protiens that *trigger* allergies.
Of course not all GM foods will trigger allergies, but we just dont know which ones will affect which people. It is propper to use caution and part of that is to inform the public so that they can make a choice as to their risk exposure.
WTF Fail??? There is precisely the same hazard in genetically modified foods, it's the primary reason people want to know.
GMO's have gene sequences inserted into their DNA from some other species, eg bacteria or squid. The purpose of those genes is to create protiens, and it is protiens that cause allergies.
So we could have the case of someone who is allergic to seafood having a reaction with GM soybeans. It is 100% valid that people should be informed.
You want to run photoshop on a laptop? What sort of massochist are you?
There are some people who need to have a large amounts of data whilst travelling around with their laptops, but those are very few and far between - and even then USB3 is a viable solution. 128GB for the OS and basic business applications is fine.
7" is a convenient size, but unfortunately most of the cheap 7" tablets have far too small a resolution to make them practical. The pop-up keyboard and title bars on (earlier) android seem to be pixel based instead of a percentage, so take up far too much of the screen. At times you're left with 1/4 of the screen for content.
I'm just about to change from a 7" Android 2.3 to 10" Android 4 and am expecting a huge boost in usability.
Did you RTFA - fairly big chasm between socially awkward and grabbing someone's crotch. Also when it comes to licking a girl's tatoo, I wait till I'm invited.
Most big software projects I've seen fail hard, like millions and 10's of wasted dollars hard. By comparison you just dont see that very often in big electrical/mechanical/civil projects, which can be equally complex (eg refineries, cruise liners etc).
There are software developers with all sorts of fancy titles - architects, analysts, engineers - and yet they cant get the code right. Usually the root cause is inadequete requirements spec and failure to manage the customers expectations but that's no excuse, there are usually numerous poeple employed in the project process specifically to get those parts right.
Software engineering is still playing catch up, in the sense that most developers and development companies I've seen still dont follow a formal enough process for it really to be called engineering. Usually it's a bunch of computer science graduates having a wild stab at it, and the good ones are closer to artisans than engineers.
Until the entire software industry gets off it's high horse and admits this to itself - and more importantly admits this to the customers, we are going to continue to be dissapointed with the quality.
Also, where do you put your testicles? It's all well and good to show a woman in the suit, but I wouldnt want mechanical counter-pressure on my block and tackle.
It's not a new thing - iron dust has been blowing into the oceans for millenia.
Recent urban development around our coastlines have significantly reduced this natural nutrient source, so projects like this are really just restoring balance.
I'm not sure if you've noticed, but humans have an attocious track record at making the correct decisions whilst driving. Most drivers simply arent trained to deal with emergency situations and have absolutely dismal respose under pressure.
Whilst it may not be ideal in some specific cases, I would bet money that a computer will on average save many, many lives.
Yeah but who really expects a silicon sphere to stay perfectly stable over time? Abrasion, moisture, surface contamination etc will all affect the phsyical artifact.
By counting electrons, we have a discrete, repeatable and *reproducable* measure.
They're not trying to replace GPS - it's to augment it when GPS doesnt work. If you have a receiver with both systems you are far more likely to have one of them work, because most of the obstructions for GPS also go hand in hand with the availability of other networks.
Sure it might not work in the middle of the outback, but GPS generally will so it's not the target market.
About a billion devices out there have a seal around a rotating shaft - everything from pumps to tap handles. Generally it's either a Mechanical Seal or a Radial Shaft Seal - http://en.wikipedia.org/wiki/End_face_mechanical_seal
For simple applications, a precisely machined close fitting bush will keep out water and if made of the right material will also be a self lubricating bearing too.
As wireless spectrums get more and more crowded, the enormous bandwidth capabilities of fibre will contine to improve through minor tranceiver upgrades.
Wow, what a terrible idea. There's any number of failure modes that would render your monitoring conductors moot, plus they add extra weight, and the regulation circuitry at the surface will be either complex or inefficient.
A simple switchmode DC-DC converter at the bottom would be fine, they can be purchased very cheaply with wide input voltage ranges.
PS - a scheme (like PoE) where you inject higher voltages / lower currents, and use a DC-DC converter at the other end would increase the power transfer capacity, but it is still fairly limited. PoE can do 15 - 25W over 4 conductors using 48V and 350 or 600ma.
Because the sun only shines for about 4 peak-equivalent hours per day, so that 130KW peak array only produces enough to support a constant 21KW load.
Next you have to realise that whatever power the servers are using will end up as heat, which also has to be removed from the building with an AC system.
Still, even half of that at 10kW would seem pretty high for 4 servers.
Yeah, they are horrible. With 100m of cat5 you're roughly looking at a resistance of 19 ohms, which limits your available power transfer to fractions of a watt at 5V. Not enough to drive a motor, or even decent LED lights.
And who gets to decide what packets are priority and what are not? TCP/UDP ports? Nothing to stop people running non-standard ports to either avoid attention or gain a QOS advantage. Deep inspection? Get the f$%k out of my packets!
Sorry, but my neighbours torrents are just as important as my SSH sessions - i.e not very important at all in the grand scheme of things. If it was that big a deal to me, I would pay for a premium service with less contention.
Slashdot Mirror
Depends. LED's are more efficient when overdriven with high current pulses, with the duty cycle controlling the overall power level. 100% brightness might be 5x rated (continuous) current at a 20% duty cycle.
Short Answer: Yes
Longer answer: Yeeeeesssss
Really long answer: Yes, it's technically very demanding at the best of times, let alone when you have to deal with size and battery power constraints.
Sorry, I should be clearer, it is protiens that *trigger* allergies.
Of course not all GM foods will trigger allergies, but we just dont know which ones will affect which people. It is propper to use caution and part of that is to inform the public so that they can make a choice as to their risk exposure.
WTF Fail??? There is precisely the same hazard in genetically modified foods, it's the primary reason people want to know.
GMO's have gene sequences inserted into their DNA from some other species, eg bacteria or squid. The purpose of those genes is to create protiens, and it is protiens that cause allergies.
So we could have the case of someone who is allergic to seafood having a reaction with GM soybeans. It is 100% valid that people should be informed.
You want to run photoshop on a laptop? What sort of massochist are you?
There are some people who need to have a large amounts of data whilst travelling around with their laptops, but those are very few and far between - and even then USB3 is a viable solution. 128GB for the OS and basic business applications is fine.
7" is a convenient size, but unfortunately most of the cheap 7" tablets have far too small a resolution to make them practical. The pop-up keyboard and title bars on (earlier) android seem to be pixel based instead of a percentage, so take up far too much of the screen. At times you're left with 1/4 of the screen for content.
I'm just about to change from a 7" Android 2.3 to 10" Android 4 and am expecting a huge boost in usability.
Did you RTFA - fairly big chasm between socially awkward and grabbing someone's crotch. Also when it comes to licking a girl's tatoo, I wait till I'm invited.
Offline mode should cover this to a fair extent. It will just make cloud access difficult, but you could work around it.
I'm not trolling, it's a reality check.
Most big software projects I've seen fail hard, like millions and 10's of wasted dollars hard. By comparison you just dont see that very often in big electrical/mechanical/civil projects, which can be equally complex (eg refineries, cruise liners etc).
There are software developers with all sorts of fancy titles - architects, analysts, engineers - and yet they cant get the code right. Usually the root cause is inadequete requirements spec and failure to manage the customers expectations but that's no excuse, there are usually numerous poeple employed in the project process specifically to get those parts right.
Software engineering is still playing catch up, in the sense that most developers and development companies I've seen still dont follow a formal enough process for it really to be called engineering. Usually it's a bunch of computer science graduates having a wild stab at it, and the good ones are closer to artisans than engineers.
Until the entire software industry gets off it's high horse and admits this to itself - and more importantly admits this to the customers, we are going to continue to be dissapointed with the quality.
Also, where do you put your testicles? It's all well and good to show a woman in the suit, but I wouldnt want mechanical counter-pressure on my block and tackle.
Does your SUV breaking down threaten the lives of hundreds of thousands of poeple? No?
Has it been affected by a contaminant that was poorly understood when it was designed? Also No?
Probably not a great analagy then.
It's not a new thing - iron dust has been blowing into the oceans for millenia.
Recent urban development around our coastlines have significantly reduced this natural nutrient source, so projects like this are really just restoring balance.
WTF???????!!!!!!!!! Sounds like she shouldn't even be on the road now!
I'm not sure if you've noticed, but humans have an attocious track record at making the correct decisions whilst driving. Most drivers simply arent trained to deal with emergency situations and have absolutely dismal respose under pressure.
Whilst it may not be ideal in some specific cases, I would bet money that a computer will on average save many, many lives.
Yeah but who really expects a silicon sphere to stay perfectly stable over time? Abrasion, moisture, surface contamination etc will all affect the phsyical artifact.
By counting electrons, we have a discrete, repeatable and *reproducable* measure.
Wow, how short sighted.
They're not trying to replace GPS - it's to augment it when GPS doesnt work. If you have a receiver with both systems you are far more likely to have one of them work, because most of the obstructions for GPS also go hand in hand with the availability of other networks.
Sure it might not work in the middle of the outback, but GPS generally will so it's not the target market.
About a billion devices out there have a seal around a rotating shaft - everything from pumps to tap handles. Generally it's either a Mechanical Seal or a Radial Shaft Seal - http://en.wikipedia.org/wiki/End_face_mechanical_seal
For simple applications, a precisely machined close fitting bush will keep out water and if made of the right material will also be a self lubricating bearing too.
Rotting tends to mean decomposing by bacterial action - which use the material as a food source immediately and then expel CO2.
He's talking about thermal depolymerisation without bacteria or oxygen. Because it hasn't oxidised, it can be used as a fuel source later.
Fibre obselete???? Good joke there.
As wireless spectrums get more and more crowded, the enormous bandwidth capabilities of fibre will contine to improve through minor tranceiver upgrades.
Nothing beats having a cable.
Go live in a cave and eat sand then.
Just about any other human endeavour has been built on the exploitation of other living creatures. The big differentiator is doing it humanely.
Wow, what a terrible idea. There's any number of failure modes that would render your monitoring conductors moot, plus they add extra weight, and the regulation circuitry at the surface will be either complex or inefficient.
A simple switchmode DC-DC converter at the bottom would be fine, they can be purchased very cheaply with wide input voltage ranges.
PS - a scheme (like PoE) where you inject higher voltages / lower currents, and use a DC-DC converter at the other end would increase the power transfer capacity, but it is still fairly limited. PoE can do 15 - 25W over 4 conductors using 48V and 350 or 600ma.
Because the sun only shines for about 4 peak-equivalent hours per day, so that 130KW peak array only produces enough to support a constant 21KW load.
Next you have to realise that whatever power the servers are using will end up as heat, which also has to be removed from the building with an AC system.
Still, even half of that at 10kW would seem pretty high for 4 servers.
Yeah, they are horrible. With 100m of cat5 you're roughly looking at a resistance of 19 ohms, which limits your available power transfer to fractions of a watt at 5V. Not enough to drive a motor, or even decent LED lights.
And who gets to decide what packets are priority and what are not? TCP/UDP ports? Nothing to stop people running non-standard ports to either avoid attention or gain a QOS advantage. Deep inspection? Get the f$%k out of my packets!
Sorry, but my neighbours torrents are just as important as my SSH sessions - i.e not very important at all in the grand scheme of things. If it was that big a deal to me, I would pay for a premium service with less contention.