By today's standards, Apollo was a dinky little deathtrap,
The more I read the ALSJ the more respect I have for the hardware. The Apollo CM would have survived both shuttle disasters. The Apollo 13 incident resulted in a more mature spacecraft with more redundancy. A similar incident on a shuttle would probably have killed the crew immediately. Building the system out of small modules meant that the architecture could accommodate expanded modules. Apollo serviced the lunar program, skylab and apollo-soyuz.
I just wish NASA had looked into an economical launcher to support it after the supply of Saturn Vs ran out.
But the Saturn V was an expensive dead end. Ground support costs alone make it impossible to turn it into a commercial prospect. All US manufactured launch vehicles are presumably controlled by ITAR in any event. I am sure Richard Branson is going to have a fine time exporting the tier 2 system to the other countries he wants to launch from.
Actually most of the spies I know take a low tech approach to the job. Far better just to email the stuff to your own hotmail account, than to have it on you in a potentially crackable form.
I can kill people with a hammer, or I can use it to build things. I choose the latter. Should we outlaw hammers because some people illegaly misuse them?
Brings to mind the riots in Sydney about a year ago. A sporting goods shop almost sold out of baseball bats in a couple of hours. The manager called the police to ask for a suggested course of action. The cops suggested the store stop selling baseball bats for the time being.
To take an extreme position, I do not believe it would be a good idea for the wireless network configuration dialog in gnome to have a text field for the key and right beside it, a button to use network traffic to obtain the key.
I'd love to be able to do 4096-bit RSA encryption in my head
Hmmm interesting. Because we don't have a specification for the storage structures in the brain, and rely on non-encrypted IO to reverse engineer such structures, encrypting your IO is effectively the same as encrypting your brain.
Well done. If you are Greg Egan I suggest you write a book about your idea. If you are not then I suggest you send it to Greg.
Lets hope that if people try this on a real brain with Epilepsy they read The Terminal Man first.
As for me, I will continue rely on home brewed behaviour modification to treat my seizure disorder. Though I am pleased to see more treatment options for people with very serious conditions.
This is a free minix-like kernel for i386(+) based AT-machines
Either it was minix-like at the time, or Linus didn't understand the meaning of minix-like. I can imagine that saying that and being wrong would get Tanenbaum off side.
How long until this triggers an epileptic seizure in some poor unfortunate - and worse still, would whoever's wielding it be able to tell the difference between the potentially life-threatening seizure and the normal reaction?
Many LED bicycle lights also flash at 9-12 Hz. As technology improves and light output increases this is likely to become a problem.
1. Use track ball to designate flight control system UI 2. Pull down Control Mode menu 3. Select Manual Mode option 4. Wait for confirmation dialog 5. Click Yes (and uncheck Don't ask me this again) 6. Check distance to landing site
Its a joke, I know, but I have never met a pilot who likes the Airbus UI. It needs a Dumb mode. All the Apollo spacecraft were dumb.
Yeah here in Australia it is 240V 50Hz, but often closer to 260 in Western Australia for historical reasons. Most people design for 250 which is what a volt meter will read in most places.
No kidding. years ago in my former job on traffic systems we had a great UPS with a generator on site and the ability keep it fueled up indefinitely. A security contractor came in on the weekend to install something and tried to wire up a new circuit hot. He slipped with a screwdriver and shorted the white phase to the chasis of the breaker panel. I don't think the tip of the driver actually touched ground, but the burn mark is still there to show how close he got.
The resuting current spike blew the 100A fuses (heavy metal strips) both going in to and out of the UPS. With the UPS effectively broken the generator set failed to start and the system gracefully shut down 40 minutes after the incident. Thats not bad. The batteries were only specified to work long enough for the genny to settle at 50Hz.
In the process of blowing the fuses a spike got back into the power supply of one of our DEC Alphas and took out the power supply. The system was redundant at the software level so I didn't notice immediately.
The UPS guy came out and didn't have enough fuses to replace the blown one, but we found that with a bit of brute force and filing attacks some others could be made to fit.
True virtualisation will cause the opposite effect - people will buy less hardware.
But every desktop user is going to have a CPU in their machine and the number of CPU's in the big server farms isn't going to change much because they pile on capacity to suit the application. Odd sites like the one I work at will use vmware where they have a requirement for a calendar server running linux 2.2 (I am not making this up) and don't want to waste a box on it. Fair enough but that not a big market to lose.
host an arts and music website that was 'farked'. They actually drove the poor disk right into the ground, took me two days working with my hosting provider to recover the server and restore the site.
Hard to imagine why. The fattest network interface you can plug into a server has a tiny proportion of the bandwidth of the CPU, disks, etc. Perhaps somebody confused deleting your files with "load balancing"
Its not easy, but I can't see the infrastructure component of the system being more than a billion USD. That leaves you 39 GUSD to equip you entire aircraft fleet with mode S transponders. It sounds like an excessive price to me.
The big challenge for the ATC system becomes scalability. Current methods of detecting aircraft are:
Primary radars
Mode C secondary radars
Mode S secondary radars
ADS-C (satellite linked)
The primary radars might have a maximum range of 100 NM. The secondary radars about 250 NM. ADS-C works anywhere you have satellite communication but in practice only airliners in remote airspace will be using it.
ADS-B gives you almost 100% coverage in your airspace. Many more aircraft are detected.
Putting an ADSB transponder in every aircraft in the sky (ultimately) means that the ATC system has to start dealing with many times more aircraft. At the very least you need better filtering to enable the controller to see the aircraft he has to control and not be distracted by uncontrolled aircraft nearby.
IMHO the torrent of new information will eventually lead to ATC systems delegating their tactical control to automated systems. Any other approach ignores the potential of this technology.
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The more I read the ALSJ the more respect I have for the hardware. The Apollo CM would have survived both shuttle disasters. The Apollo 13 incident resulted in a more mature spacecraft with more redundancy. A similar incident on a shuttle would probably have killed the crew immediately. Building the system out of small modules meant that the architecture could accommodate expanded modules. Apollo serviced the lunar program, skylab and apollo-soyuz.
I just wish NASA had looked into an economical launcher to support it after the supply of Saturn Vs ran out.
the men who rode it were no-foolin' heroes.No argument from me on that front.
But the Saturn V was an expensive dead end. Ground support costs alone make it impossible to turn it into a commercial prospect. All US manufactured launch vehicles are presumably controlled by ITAR in any event. I am sure Richard Branson is going to have a fine time exporting the tier 2 system to the other countries he wants to launch from.
Actually most of the spies I know take a low tech approach to the job. Far better just to email the stuff to your own hotmail account, than to have it on you in a potentially crackable form.
"flash-trash" technology notwithstanding
It is meant to be running a presentation of some sort. Audio and video. I didn't hang around for the full story so I can't relay it to you.
For better security, type the wrong password nine times before you take it on the plane.
With the addition of a 0x20 character you could have been exactly right.
I won't disagree with you on that, but what does this have to do with Australia?
Brings to mind the riots in Sydney about a year ago. A sporting goods shop almost sold out of baseball bats in a couple of hours. The manager called the police to ask for a suggested course of action. The cops suggested the store stop selling baseball bats for the time being.
To take an extreme position, I do not believe it would be a good idea for the wireless network configuration dialog in gnome to have a text field for the key and right beside it, a button to use network traffic to obtain the key.
Free speech is fine but I don't agree with having this tool available to non-professionals in a nice easily installed package.
On nine track tape? Your old data is going to become a nasty head cleaning job. Have lots of isopropyl alcohol handy.
Hmmm interesting. Because we don't have a specification for the storage structures in the brain, and rely on non-encrypted IO to reverse engineer such structures, encrypting your IO is effectively the same as encrypting your brain.
Well done. If you are Greg Egan I suggest you write a book about your idea. If you are not then I suggest you send it to Greg.
Lets hope that if people try this on a real brain with Epilepsy they read The Terminal Man first.
As for me, I will continue rely on home brewed behaviour modification to treat my seizure disorder. Though I am pleased to see more treatment options for people with very serious conditions.
From TFA:
Either it was minix-like at the time, or Linus didn't understand the meaning of minix-like. I can imagine that saying that and being wrong would get Tanenbaum off side.
Many LED bicycle lights also flash at 9-12 Hz. As technology improves and light output increases this is likely to become a problem.
I don't get it. The backlight on my LCD is always full on, even if the screen is black. So how does having a black screen save energy?
Like this?
Then: 66 PRO
Now:
1. Use track ball to designate flight control system UI
2. Pull down Control Mode menu
3. Select Manual Mode option
4. Wait for confirmation dialog
5. Click Yes (and uncheck Don't ask me this again)
6. Check distance to landing site
Its a joke, I know, but I have never met a pilot who likes the Airbus UI. It needs a Dumb mode. All the Apollo spacecraft were dumb.
Yeah here in Australia it is 240V 50Hz, but often closer to 260 in Western Australia for historical reasons. Most people design for 250 which is what a volt meter will read in most places.
No kidding. years ago in my former job on traffic systems we had a great UPS with a generator on site and the ability keep it fueled up indefinitely. A security contractor came in on the weekend to install something and tried to wire up a new circuit hot. He slipped with a screwdriver and shorted the white phase to the chasis of the breaker panel. I don't think the tip of the driver actually touched ground, but the burn mark is still there to show how close he got.
The resuting current spike blew the 100A fuses (heavy metal strips) both going in to and out of the UPS. With the UPS effectively broken the generator set failed to start and the system gracefully shut down 40 minutes after the incident. Thats not bad. The batteries were only specified to work long enough for the genny to settle at 50Hz.
In the process of blowing the fuses a spike got back into the power supply of one of our DEC Alphas and took out the power supply. The system was redundant at the software level so I didn't notice immediately.
The UPS guy came out and didn't have enough fuses to replace the blown one, but we found that with a bit of brute force and filing attacks some others could be made to fit.
Please type the word in this image: problems
But every desktop user is going to have a CPU in their machine and the number of CPU's in the big server farms isn't going to change much because they pile on capacity to suit the application. Odd sites like the one I work at will use vmware where they have a requirement for a calendar server running linux 2.2 (I am not making this up) and don't want to waste a box on it. Fair enough but that not a big market to lose.
Hard to imagine why. The fattest network interface you can plug into a server has a tiny proportion of the bandwidth of the CPU, disks, etc. Perhaps somebody confused deleting your files with "load balancing"
Its not easy, but I can't see the infrastructure component of the system being more than a billion USD. That leaves you 39 GUSD to equip you entire aircraft fleet with mode S transponders. It sounds like an excessive price to me.
The big challenge for the ATC system becomes scalability. Current methods of detecting aircraft are:
The primary radars might have a maximum range of 100 NM. The secondary radars about 250 NM. ADS-C works anywhere you have satellite communication but in practice only airliners in remote airspace will be using it.
ADS-B gives you almost 100% coverage in your airspace. Many more aircraft are detected.
Putting an ADSB transponder in every aircraft in the sky (ultimately) means that the ATC system has to start dealing with many times more aircraft. At the very least you need better filtering to enable the controller to see the aircraft he has to control and not be distracted by uncontrolled aircraft nearby.
IMHO the torrent of new information will eventually lead to ATC systems delegating their tactical control to automated systems. Any other approach ignores the potential of this technology.
Perhaps in ten years time Linux will be a microkernel