The descriptions we've had publicly released indicate that the points of effect are very narrow, sometimes as narrow as a single room, sometimes as narrow as the bed.
Reflections will cause phase cancellation and reinforcement. In extreme cases, the origin may be completely masked by this.
If ultrasound transmitters are positioned in adjacent floors or adjacent buildings, or even in vans on the street, all trained on the room or the bed, then when the signals aren't overlapping they're not really having any effect, but where their paths overlap they intermodulate and that's where a human is medically affected.
They may still have an effect but the nonlinearity will produce mixing products in the audible range.
The thing which puzzles me is that if ultrasound is being used, then it should be unambiguously detectable with the proper instrumentation. Even I could hack something together in a day. Ultrasound receivers usually include a focusing dish for both directivity and sensitivity but that would not be needed at high levels.
analyzing and publishing public information is not an invasion of privacy, even when done on a massive detailed scale using new technology.
That will be real reassuring to the victim who gets beaten up, crippled, or killed do to Facebook breaching their privacy. Once there are enough incidents, people might start taking it out on Facebook employees but I guess that is not Facebook's problem.
The fact that they generate as much as they used proves some pro fossil energy anal-cranial-submersion to the point of suffocation proponents need to move on.
So Google did not rely on fossil fueled base load capacity acting as a free infinite storage? Well, that is a relief.
Ryzen gives ECC for free (you don't need to pony up for a server-class chip).
More importantly, you do not need to pony up for an Intel ECC enabling south bridge.
One of the ways Intel makes their low end ECC supporting processors seem less expensive than they really are is by transferring the price premium over to the south bridge and therefor motherboard needed to allow ECC operation. So if ECC is a requirement, the comparison is really with Intel Xeon processors and chipsets where for equivalent performance, Intel's solution is a lot more expensive.
Any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot without manual reloading, by a single function of the trigger.
Is this only a technicality? The laws *are* technical in detail and various groups including the BATFE and other government organizations have taken advantage of this for almost 83 years to persecute firearm owners. Blame them, Congress, and your obtuse attitude for the lack of cooperation after so much bad faith.
Want an example? Senator "turn them all in" Feinstein's bill to ban bump stocks also bans every replacement part which lowers and maybe even affects lock time. Is that just a drafting mistake or deliberate from a Senator who should be an expert in law?
It would be better for Tesla to propose private projects on specific parcels of private land, using private financing and only interact with the government for necessary permitting and coordination of the rebuilding of the grid along public right of ways.
But that would defeat the purpose of government issued permits. Ask Floridians how permits work for solar power.
And Congress has been trying to kill the post office for a long time, but they can't do it outright as the public wouldn't stand for it, so they do shit like force them to fund pensions decades further out than anyone else, prohibit them from raising bulk mail rates, etc. Yet it lives.
The pensions are stored in treasury bonds or IOUs from Congress to the post office so like Social Security, it is an easy way for Congress to takes people's money to spend.
It will not be TSA that pushes for their control of security checkpoints for Hyperloop terminals, it will be people, once the first hyperloop train is destroyed by anyone who can have a political agenda attached to them.
It will be the airlines if they perceive Hyperloop as a threat and the rent seekers in government when they see another way to loot.
I don't think encryption would help stop GPS spoofing. Consider that the system was set up in the 1980s. What are the chances that a security scheme created in the 1980s and designed for 1980s hardware would stand up today? What are the chances that the private keys would not have been found or stolen by now?
The problem is not any security scheme.
One way to spoof the signals, all of them, is to simply retransmit the existing signals from a different location. Now the receivers make the timing measurements based on being at that other location. If you have a GPS receiver with a very long feedline to the antenna, then the position reported is the antenna's position and not the receiver's position. No encryption will help.
One solution for this is to maintain a precision clock so that the inconsistency of time from this type of spoofing may be detected.
As a simple metaphor : how many people will upgrade the magnetron on a microwave ? Sure there's going to be a few people proudly screaming "me!" on/. But in your family ? Normal people around you ? The most probable answer is going to be "What a magnetron ?"
Instead of magnetron make it ballast capacitor or rectifier which are commonly replaced parts like batteries should be. They would not be made so easily available if this were not the case.
Don't forget the spectacular expense of the X299 platform. As usual, you'll wind up spending an extra hundred bucks on a decent motherboard for Intel as opposed to AMD.
And then Intel magnanimously allows you to spend more for a dongle to enable RAID.
If you want ECC, then the choices come down to most AMD processors and Intel Xeon processors. If the comparison then is between Xeon and the current Zen based processors, Intel looks significantly worse as far as performance for a given price. Intel's current desktop releases become irrelevant.
I went from an ECC supporting Intel Pentium 4 to the AMD Phenom II because of Intel's market segmentation and have no complaints. For me, AMDs Zen based processors compete against Intel processors like the Xeon E3-1275 v6 and Xeon E3-1285 v6 which are not competitive at all.
A lot of the AMD Ryzen chips support ECC. I just bought a mid-range 1600 with a mini-ITX board and it supports ECC. I bought a 16GB stick of ECC for it for only USD$120.
As far as I know, all of the Ryzen chips support ECC. AMD said it was supported but not validated on the initial ones.
This follows the pattern set by AMD where all of their socket AM chips have supported ECC.
I get sick of people whingeing saying that we are just as bad as the totalitarian regime like China (or N Korea!). There is no comparison.
Sure, we only get the politicians we deserve. But we get to vote them out when they run too far off the rails. We get liberties unknown to the Chinese.
Our system is far from perfect. But at least we can all help to improve it.
My standard of comparison is not "we are better than China".
They deprecated selective availability some time ago and for good reason. Continuous use was encouraging development and deployment of ubiquitous differential GPS solutions which would undermine selective availability if it was needed again. I assume this capability still exists ready for use.
I had always heard the lower accuracy from gps was a government imposed restriction or limitations of the protocols not a technical one. is that simply an old myth? I know nothing about the tech personally.
There is some truth to that. Originally the coarse acquisition signal was the only one made available for civilian applications and "selective availability" degraded it. Selective availability has been deprecated and new signals made available for civilian applications on different frequencies allowing propagation corrections. These could of course be degraded at any time without impacting military receivers.
My suggestion is use the center of the Earth as a start value and leave out the surface altogether, however that is muddied by the fact that the surface is not a constant distance away from the core all over the Earth.
Oh, that is much better than my suggestion of scraping the high points off of the Earth and depositing them in the low points to correct the Earth's non-spherical shape.
For a good altitude fix you need some satellites down near the horizon, in a dense urban area (urban canyon) you can't get this and performance will drop substantially.
For an elevation fix as good as the lateral fix, a satellite on the opposite side of the earth is required which presents practical problems.
Slashdot Mirror
The descriptions we've had publicly released indicate that the points of effect are very narrow, sometimes as narrow as a single room, sometimes as narrow as the bed.
Reflections will cause phase cancellation and reinforcement. In extreme cases, the origin may be completely masked by this.
If ultrasound transmitters are positioned in adjacent floors or adjacent buildings, or even in vans on the street, all trained on the room or the bed, then when the signals aren't overlapping they're not really having any effect, but where their paths overlap they intermodulate and that's where a human is medically affected.
They may still have an effect but the nonlinearity will produce mixing products in the audible range.
The thing which puzzles me is that if ultrasound is being used, then it should be unambiguously detectable with the proper instrumentation. Even I could hack something together in a day. Ultrasound receivers usually include a focusing dish for both directivity and sensitivity but that would not be needed at high levels.
Does any known technology exist that could have actually caused this to occur?
Intermodulation from multiple high power ultrasound transmitters.
analyzing and publishing public information is not an invasion of privacy, even when done on a massive detailed scale using new technology.
That will be real reassuring to the victim who gets beaten up, crippled, or killed do to Facebook breaching their privacy. Once there are enough incidents, people might start taking it out on Facebook employees but I guess that is not Facebook's problem.
Remember this incident?
The fact that they generate as much as they used proves some pro fossil energy anal-cranial-submersion to the point of suffocation proponents need to move on.
So Google did not rely on fossil fueled base load capacity acting as a free infinite storage? Well, that is a relief.
Next you'll tell me that Warez producers incorporate exploit code into the products they crack.
Next you will tell me that Microsoft incorporates exploit spying code and government backdoors in Windows.
Ryzen gives ECC for free (you don't need to pony up for a server-class chip).
More importantly, you do not need to pony up for an Intel ECC enabling south bridge.
One of the ways Intel makes their low end ECC supporting processors seem less expensive than they really are is by transferring the price premium over to the south bridge and therefor motherboard needed to allow ECC operation. So if ECC is a requirement, the comparison is really with Intel Xeon processors and chipsets where for equivalent performance, Intel's solution is a lot more expensive.
I am sure the victims of Stalin, Hitler, Mao Zedong , and Pol Pot would agree.
If bump stocks converted semi-automatic weapons into fully automatic weapons, then they would have already been banned.
https://www.slidefire.com/down...
The statutory definition of a machine gun is:
Any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot without manual reloading, by a single function of the trigger.
Is this only a technicality? The laws *are* technical in detail and various groups including the BATFE and other government organizations have taken advantage of this for almost 83 years to persecute firearm owners. Blame them, Congress, and your obtuse attitude for the lack of cooperation after so much bad faith.
Want an example? Senator "turn them all in" Feinstein's bill to ban bump stocks also bans every replacement part which lowers and maybe even affects lock time. Is that just a drafting mistake or deliberate from a Senator who should be an expert in law?
It would be better for Tesla to propose private projects on specific parcels of private land, using private financing and only interact with the government for necessary permitting and coordination of the rebuilding of the grid along public right of ways.
But that would defeat the purpose of government issued permits. Ask Floridians how permits work for solar power.
And Congress has been trying to kill the post office for a long time, but they can't do it outright as the public wouldn't stand for it, so they do shit like force them to fund pensions decades further out than anyone else, prohibit them from raising bulk mail rates, etc. Yet it lives.
The pensions are stored in treasury bonds or IOUs from Congress to the post office so like Social Security, it is an easy way for Congress to takes people's money to spend.
It will not be TSA that pushes for their control of security checkpoints for Hyperloop terminals, it will be people, once the first hyperloop train is destroyed by anyone who can have a political agenda attached to them.
It will be the airlines if they perceive Hyperloop as a threat and the rent seekers in government when they see another way to loot.
Combining RAID 5 with SSD is ignorant.
Why is that? RAID 5 increases write multiplication but SSDs are always advertised as having plenty of write longevity.
I don't think encryption would help stop GPS spoofing. Consider that the system was set up in the 1980s. What are the chances that a security scheme created in the 1980s and designed for 1980s hardware would stand up today? What are the chances that the private keys would not have been found or stolen by now?
The problem is not any security scheme.
One way to spoof the signals, all of them, is to simply retransmit the existing signals from a different location. Now the receivers make the timing measurements based on being at that other location. If you have a GPS receiver with a very long feedline to the antenna, then the position reported is the antenna's position and not the receiver's position. No encryption will help.
One solution for this is to maintain a precision clock so that the inconsistency of time from this type of spoofing may be detected.
As a simple metaphor : how many people will upgrade the magnetron on a microwave ? /.
Sure there's going to be a few people proudly screaming "me!" on
But in your family ? Normal people around you ?
The most probable answer is going to be "What a magnetron ?"
Instead of magnetron make it ballast capacitor or rectifier which are commonly replaced parts like batteries should be. They would not be made so easily available if this were not the case.
The avalanche has already started; it is too late for the pebbles to vote.
Don't forget the spectacular expense of the X299 platform. As usual, you'll wind up spending an extra hundred bucks on a decent motherboard for Intel as opposed to AMD.
And then Intel magnanimously allows you to spend more for a dongle to enable RAID.
If you want ECC, then the choices come down to most AMD processors and Intel Xeon processors. If the comparison then is between Xeon and the current Zen based processors, Intel looks significantly worse as far as performance for a given price. Intel's current desktop releases become irrelevant.
I went from an ECC supporting Intel Pentium 4 to the AMD Phenom II because of Intel's market segmentation and have no complaints. For me, AMDs Zen based processors compete against Intel processors like the Xeon E3-1275 v6 and Xeon E3-1285 v6 which are not competitive at all.
A lot of the AMD Ryzen chips support ECC. I just bought a mid-range 1600 with a mini-ITX board and it supports ECC. I bought a 16GB stick of ECC for it for only USD$120.
As far as I know, all of the Ryzen chips support ECC. AMD said it was supported but not validated on the initial ones.
This follows the pattern set by AMD where all of their socket AM chips have supported ECC.
I get sick of people whingeing saying that we are just as bad as the totalitarian regime like China (or N Korea!). There is no comparison.
Sure, we only get the politicians we deserve. But we get to vote them out when they run too far off the rails. We get liberties unknown to the Chinese.
Our system is far from perfect. But at least we can all help to improve it.
My standard of comparison is not "we are better than China".
In the old days corrupt and unruly government officials would be tarred and feathered (or worse) so they knew to behave.
In the old days, inconvenient or unruly citizens would be whipped or beaten (or worse) so they knew to stay in their place.
We will run out of government officials before running out of citizens so it sounds good to me.
They deprecated selective availability some time ago and for good reason. Continuous use was encouraging development and deployment of ubiquitous differential GPS solutions which would undermine selective availability if it was needed again. I assume this capability still exists ready for use.
I had always heard the lower accuracy from gps was a government imposed restriction or limitations of the protocols not a technical one. is that simply an old myth? I know nothing about the tech personally.
There is some truth to that. Originally the coarse acquisition signal was the only one made available for civilian applications and "selective availability" degraded it. Selective availability has been deprecated and new signals made available for civilian applications on different frequencies allowing propagation corrections. These could of course be degraded at any time without impacting military receivers.
My suggestion is use the center of the Earth as a start value and leave out the surface altogether, however that is muddied by the fact that the surface is not a constant distance away from the core all over the Earth.
Oh, that is much better than my suggestion of scraping the high points off of the Earth and depositing them in the low points to correct the Earth's non-spherical shape.
For a good altitude fix you need some satellites down near the horizon, in a dense urban area (urban canyon) you can't get this and performance will drop substantially.
For an elevation fix as good as the lateral fix, a satellite on the opposite side of the earth is required which presents practical problems.
Or include a conductive mesh shielded pocket in your jacket or pants.