Re: Triple processing
If the 737 Max was safe without MCAS, why did they need to add it?
209 posts • joined 3 Jul 2009
Smaller helicopters have a lower blade-disc rotational inertia, giving less time for the pilot to react to a power failure or air turbulence . For example the Robinson R44 has about 4 seconds of rotor inertia available rather than 1.6 seconds for the Robinson R22, before the incident becomes unrecoverable. Smaller helicopters also are more likely to have teeter-totter blade disc attachment, with it's risk of mast bumping or tail chop off. Smaller helicopters are not necessarily safer.
"At least these bozos allegedly only used a .22 rather than something more potent which could have penetrated the thing. These vests are only really intended to stop low-energy pistol shots, not high-velocity rifle ammunition."
Cue the calibre vs lethality debate. Shooting at someone with any firearm is dangerous.
" It was a selling point AMD pushed for cloud and off-prem platforms."
Meh. Cloud customers often don't know what iron they are running on, or even then if security protections are enabled. You have to assume cloud is insecure, because encryption (other then 1 time pads) only ever slows down an attacker.
No, you will not get a 50V pots line with fibre, instead at the premises you get an Optical Network Termination unit with a Battery Backup Unit which contains rechargeable cells. These will locally generate the 50V required to operate legacy POTS termination equipment. Openreach will roll this out to every line, completely removing all the copper network.
The exchange will only need a router with all optical interfaces.
All very good, but not the nub.
The problem is that speculative executions can load from forbidden memory locations, and only cause a violation exception if their results are committed. Loading - processing - throwing the data leaks the contents through clever timing analysis.
Fixing it is hard. Lessons need to be learnt from the cipher/encryption community, that complete separation between userland and kernel is required for true security.
Scots law differs from English law in that prior rulings are for guidance rather than precedence. A Scots court would take a dim view of attempts to claim excessive amounts of money for distress, and would see it as an attempt to use the court as a tool of war rather than a way to settle a dispute.
You're watching 4k TV on your main set in the living room. The kids don't want to watch what you are watching so go watch 4k TV in their bedrooms, separately from each other. Then your partner watches more 4k TV in the kitchen while making the dinner... Apparently there is simply no need or use for 1Gbps.
MOVs and Zeners will protect against static discharge, but for real reliability (e.g. Intrinsic Safety) they then need to be protected against sustained overload with fuses, creepage and clearance distances, infallible connections, optocoupler "Distance Through Insulation"... It gets expensive.
Also, I've seen computer interface chips on motherboards explode when they are pushed into latch-up by inappropriately high currents (>15mA) through their inbuilt protection diodes.
"Since when did a microcontroller have cache, TLBs, an MMU, and all the other gubbins needed by an application CPU."
Microcontrollers have had these features, and more (e.g. graphics accelerators), for many years. It is a microcontroller if it has built-in peripherals to control things.
Reminds me of the time I was interviewing a structural engineer for my self build, and trying to impress me with his knowledge, he said that my 1860 stone staircase was 'cantilevered' and the iron and wood balustrade takes most of the load. Suffice to say he didn't get hired.
"The flexing and bending of a wing in flight is intended by design, and a very rigid wing would break much more easily. Skyscrapers are also designed this way, to actually sway a little – it makes them far more robust."
They could make the wing more rigid, but it would weigh more, reducing payload, range, and efficiency. They don't actually care how much it bends as long as it doesn't break.
For civil engineers, it is cost vs bending, though the deflection limits are normally set by Building Standards/Codes.
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