Some electronics emit ultrasonic noise. Cheap switching power supplies will have 40KHz transformers chattering away. You can't hear it, but it is having a more direct physical effect than low level electro-magnetic fields.
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Its very strange. I weighed myself this morning. Then I decided to weigh the Earth. When I flipped the scale over, it turned out that the Earth weighs exactly the same as me! I guess Newton was right.
I think you mean Shannon's Law, and that you are reversed on high and low SNR. A channel with 0 SNR carries no data. You also miss the original point. If I have a perfect channel (infinite SNR), I can compress the frequency range of an analog signal and send it in less bandwidth, since I can expand it perfectly at the other end. The problem is that on a real channel I can't send a digital or analog rate higher than the guaranteed minimum SNR allows, and that the inevitable errors on a compressed digital signal are worse than analog noise.
The cheesy 4:1:1 consumer-grade stuff samples luminance at 13.5 MHz x 8bpp and each color signal at 1/4 that, giving 162 Mbits/sec. Broadcast equipment is mostly 4:2:2 and 10 bpp so more like 270 Mbits/sec. The 25 Mbit rate is after compression. For digital broadcast, that same signal would get squished to 4.85 Mbits/sec to fit in the 6MHz channel.
What do you mean by "more efficient" if not use of bandwidth? Use of ECC reduces the available bandwidth by the amount of redundancy. This comes directly off the theoretical maximum for the channel.
As for low SNR, I personally prefer analog snow to the screen breaking up into longer-lasting little squares, which is what I see on digital TV transmissions. Maybe that's just me.
Good analysis up to "digital data is more efficient". Analog signals take less bandwidth to transfer the same amount of information. The reason is fundamental. Digital signals assume that a signal is at one of several discrete levels, while analog assumes that the level is continuous. Limiting the levels throws away some of the potential information in the signal.
For example, analog TV signals use 4.5MHz of bandwidth, are uncompressed and have 6 MHz separation. A standard TV 480i signal starts at over 200 MBits/sec and uses MPEG-2 lossy compression to fit into the same 6Mhz channel spacing. Decompression magnifies any noise in the signal to cause artifacts in multiple frames and pixelation on the display. For some source material there is mosaicing even in noise-free transmission.
So why use it? Digital allows encryption, DRM and multi-tiered access controls.
The article didn't mention shock and vibration resistance, but the flash is likely to be far more rugged than a rotating drive. Might have better temperature specs, too. Once we get flexible flat screen displays, I'll be able to drop my laptop without having a heart attack.
The 1917 usage is not referring to someone with super powers. The 1942 reference is the earliest use (so far) in the underwear pervert sense. It still predates the 1966 claim of Marvel/DC to "first use" of the term. Supersnipe was published by Street & Smith, which was purchased by Conde Nast. If Marvel and DC did not establish the term in that field then they can't very well claim it as a trademark.
Exactly. Then the existing functions could use the per-thread CWD so no new functions would be required. That would be backward compatible as well, since code that didn't use the flag could still fall back to the per-process CWD.
5-year patents: That means the drug companies have to recoup their costs in 5 years. Since it costs >$1B to bring a drug to market in the US, this would make prescription drugs unaffordable to poor people, the opposite of your intended effect.
Business-based health care: This would increase offshoring and eliminate low-paid jobs since businesses tend to do things in the most economical way.
Single payer: eliminating insurance companies and paperwork is estimated to halve the cost of health care.
Also, give people an incentive to shop for less expensive and more effective health care by publishing costs and results. Make it more like auto repair.
Just because it runs Linux doesn't mean there will be Linux drivers for all of the hardware. Memory, disk, CPU and network is all it needs to run. Might not even have video drivers. Data can be shared with the PS3 software via disk files.
A TV or mp3 player powered by exercise bikes could catch on in gyms.
A detector for defective mobile phones operating outside of the allowed frequency bands might be of interest in hospitals and other sites with sensitive electronic equipment.
Being too specific might be bad, but throwing out off-the-wall ideas can lead to something useful.
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Some electronics emit ultrasonic noise. Cheap switching power supplies will have 40KHz transformers chattering away. You can't hear it, but it is having a more direct physical effect than low level electro-magnetic fields.
well put
Because in this case its more like stealing your dad's car and taking it to Joe's Speed Shop.
Snow use blaming it on the weather. The rain of the editors will continue to be hail and hearty.
Doesn't validate, either.
Result: Failed validation
Address: http://www.tuttle-ok.gov/
Sorry, I am unable to validate this document because on line 410 it contained one or more bytes that I cannot interpret as utf-8 (in other words, the bytes found are not valid values in the specified Character Encoding). Please check both the content of the file and the character encoding indication
Just as bizarre was that they had a payload on their first launch attempt. That's like trying to ship the Beta! That would never happen in software.
Its very strange. I weighed myself this morning. Then I decided to weigh the Earth. When I flipped the scale over, it turned out that the Earth weighs exactly the same as me! I guess Newton was right.
I think you mean Shannon's Law, and that you are reversed on high and low SNR. A channel with 0 SNR carries no data. You also miss the original point. If I have a perfect channel (infinite SNR), I can compress the frequency range of an analog signal and send it in less bandwidth, since I can expand it perfectly at the other end. The problem is that on a real channel I can't send a digital or analog rate higher than the guaranteed minimum SNR allows, and that the inevitable errors on a compressed digital signal are worse than analog noise.
The cheesy 4:1:1 consumer-grade stuff samples luminance at 13.5 MHz x 8bpp and each color signal at 1/4 that, giving 162 Mbits/sec. Broadcast equipment is mostly 4:2:2 and 10 bpp so more like 270 Mbits/sec. The 25 Mbit rate is after compression. For digital broadcast, that same signal would get squished to 4.85 Mbits/sec to fit in the 6MHz channel.
What do you mean by "more efficient" if not use of bandwidth? Use of ECC reduces the available bandwidth by the amount of redundancy. This comes directly off the theoretical maximum for the channel.
As for low SNR, I personally prefer analog snow to the screen breaking up into longer-lasting little squares, which is what I see on digital TV transmissions. Maybe that's just me.
Good analysis up to "digital data is more efficient". Analog signals take less bandwidth to transfer the same amount of information. The reason is fundamental. Digital signals assume that a signal is at one of several discrete levels, while analog assumes that the level is continuous. Limiting the levels throws away some of the potential information in the signal.
For example, analog TV signals use 4.5MHz of bandwidth, are uncompressed and have 6 MHz separation. A standard TV 480i signal starts at over 200 MBits/sec and uses MPEG-2 lossy compression to fit into the same 6Mhz channel spacing. Decompression magnifies any noise in the signal to cause artifacts in multiple frames and pixelation on the display. For some source material there is mosaicing even in noise-free transmission.
So why use it? Digital allows encryption, DRM and multi-tiered access controls.
"twice as slow"
It would be more accurate to say the chip is "half fast"
Wouldn't that make one a praeterhero?
The article didn't mention shock and vibration resistance, but the flash is likely to be far more rugged than a rotating drive. Might have better temperature specs, too. Once we get flexible flat screen displays, I'll be able to drop my laptop without having a heart attack.
The 1917 usage is not referring to someone with super powers. The 1942 reference is the earliest use (so far) in the underwear pervert sense. It still predates the 1966 claim of Marvel/DC to "first use" of the term. Supersnipe was published by Street & Smith, which was purchased by Conde Nast. If Marvel and DC did not establish the term in that field then they can't very well claim it as a trademark.
Exactly. Then the existing functions could use the per-thread CWD so no new functions would be required. That would be backward compatible as well, since code that didn't use the flag could still fall back to the per-process CWD.
Except they didn't coin the term. Earliest cite is 1942, Supersnipe Comics.
I don't understand the need for all these new calls. Why not make chdir thread-safe? Is there any reason not to have a per-thread working directory?
Correct. Here is the CERT writeup from 2000.
5-year patents: That means the drug companies have to recoup their costs in 5 years. Since it costs >$1B to bring a drug to market in the US, this would make prescription drugs unaffordable to poor people, the opposite of your intended effect.
Business-based health care: This would increase offshoring and eliminate low-paid jobs since businesses tend to do things in the most economical way.
Single payer: eliminating insurance companies and paperwork is estimated to halve the cost of health care.
Also, give people an incentive to shop for less expensive and more effective health care by publishing costs and results. Make it more like auto repair.
heh. Bad example. Note the FBI modernization that has been completed: 30,000 new desktop computers for $600M
Good point. How about just guaranteeing food, shelter and clean water. Nearly 18% of children in this country live live in poverty.
Just because it runs Linux doesn't mean there will be Linux drivers for all of the hardware. Memory, disk, CPU and network is all it needs to run. Might not even have video drivers. Data can be shared with the PS3 software via disk files.
Looks to me like thedollar from 100 years ago is still worth just as much.
A TV or mp3 player powered by exercise bikes could catch on in gyms.
A detector for defective mobile phones operating outside of the allowed frequency bands might be of interest in hospitals and other sites with sensitive electronic equipment.
Being too specific might be bad, but throwing out off-the-wall ideas can lead to something useful.
Sorry, can't help with your other interests.