sitharus

88 ms·

511.
by sitharus 9y ago
The problem is that NTSC isn't 30Hz, it's 29.97Hz (or exactly 30/1.001Hz). This was due to some technical issues when introducing colour transmission, see https://en.wikipedia.org/wiki/NTSC#Lines_and_refr
512.
by sitharus 9y ago
You're completely right, if your workload is even so you can get 15 servers installed and use them all year you're better off using bare metal. However if you have uneven load - say you're in accounting and you need 5 servers
513.
by sitharus 9y ago
I can definitely add and delete health data, but on iOS 11 I cannot edit a device-provided value. Not for heart rate and steps anyway.
514.
by sitharus 9y ago
You're correct, mammals have systems to convert energy in to heat without movement and regulate this very effectively. This isn't a distinguishing characteristic of mammals though - all birds and a few fish can regulate their body
515.
by sitharus 9y ago
Recruiters want to add you so their job postings show up in your timeline. They don't add messages because it's a driftnet tactic. They're hoping people looking for jobs will just add them in case they get sent a message.
516.
by sitharus 9y ago
Dried wood suitable for burning is around 20% water at most, else it won't burn with much heat. It can go down to around 6% IIRC for kiln-dried wood suitable for construction.
517.
by sitharus 9y ago
If you go to 16:10 on the video you’ll hear a call to relinquish control of the cameras. Due to the classified mission only authorised personnel are allowed to see the data from the second stage, so the commentator would not see any of the
518.
by sitharus 9y ago
They do, but there’s a huge number of possible configurations of both hardware and software to choose from and they’re always going to miss some.
519.
by sitharus 9y ago
We picture pirates as speaking with an English West Country accent for a couple of reasons. Edward Teach, who became famous as Blackbeard, was from somewhere in the Bristol region so would presumably have spoken with this accent. Also the 1
520.
by sitharus 9y ago
iPhones do have fast charging, see Power and Battery on https://www.apple.com/iphone-8/specs/ Also a magic mouse has much lower power drain, so the same amount of charge lasts much longer on the mouse.
521.
by sitharus 9y ago
I've had ECC RAM once, it failed and ECC caught it before it could damage any documents. ECC memory also keeps a log of how many corrections it's made. In a long running machine that gets hot there _are_ bit flips and they _are_ s
522.
by sitharus 9y ago
Nice. I wish I could get hold of some inexpensive general purpose RISC-V hardware for hacking on. Hopefully soon!
523.
by sitharus 9y ago
Modern DDR4 SDRAM can run up to 2133Mhz, but DDR SDRAM is designed to increase speed by taking advantage of CPU caches. For peak performance reads occur in batches so one read command also fill the cache with nearby data. SRAM can go fast s
524.
by sitharus 9y ago
You're right, I was conflating two things. It looks like no in-order ARM cores have branch prediction though.
525.
by sitharus 9y ago
The MMU isn't part of this attack, and there are ARM cores with MMUs that are not affected. Cortex M cores are in-order CPUs, so they do not have branch prediction or perform speculative execution which the attacks rely on.
526.
by sitharus 9y ago
Cortex M and all ARM-developed cores prior to v7 are in-order CPUs, so they do not do branch prediction or speculative execution. Without branch prediction this kind of issue cannot exist.
527.
by sitharus 9y ago
Frequently at my job we end up with a bunch of people around a computer. One is typing and has all the access rights. Another is taking notes about what has happened and a couple more are watching. These people are all needed. The person wi
528.
by sitharus 9y ago
ARM is interesting because of the customisability of ARM chips. Some companies, such as Apple, license the ISA and spin their own silicon. Others license the whole CPU design from ARM holdings, and ARM produce several lines of designs with
529.
by sitharus 9y ago
No, the BFS was never used as there were only single-unit failures of the main computer (which used a quorum system with 4 machines running identical code). edit: NASA writeup on the reliability of the computers: https://www.nasa
530.
by sitharus 9y ago
I have a cutting machine that’s pretty much a plotter with a blade (though it can also take pens) which uses a similar design. It doesn’t take paper directly, it has an adhesive plastic sheet you stick the paper to. I assume that’s to provi
531.
by sitharus 9y ago
That example has a boolean operator in it, so in a strict language will already be a boolean. A better example would be one that returned 0, so you’d have to add `== 0` to it. I kind of understand your point with asm, but with higher level
532.
by sitharus 9y ago
Wow, that takes me back many years. My school in 1996 had a bunch of those as a trial. I had one for a while, it was quite fun to hack around with (even if my teachers didn't agree!). Alas I moved to the other side of the world so I do
533.
by sitharus 9y ago
Because of the design? None. In fact the Canadian-designed SLOWPOKE reactor ( https://en.m.wikipedia.org/wiki/SLOWPOKE_reactor ) is licensed to run unattended overnight - it is only passively cooled and increased tempera
534.
by sitharus 9y ago
Yes, the amount of solar heating is affected by the angle of insolation more than the amount of visible sun. They work when overcast just fine, but they won’t work so well in winter at higher latitudes - such as northern China.
535.
by sitharus 9y ago
> There's no way anyone would allow this in America because of the potential for catastrophic failures outweigh the benefits. The perception of the potential for catastrophic failure outweighs the benefits. Given it’s an unpressur
536.
by sitharus 9y ago
I’d love to agree with you, but unfortunately as humans we are not infallible. We cannot rely on people to look in every direction and see every hazard constantly. The driver may have been distracted, for example by sun strike, and the pede
537.
by sitharus 9y ago
Having worked for two companies that have shifted to cloud providers, multi-year timescales is fairly usual even just for like-for-like migrations. You can’t just shut down the servers, image them and start them in the cloud, you need to ha
538.
by sitharus 9y ago
If Apple had invested as much in AppleScript as other parts of the OS I’m sure we’d see a ‘Can automate other applications’ setting in the Privacy controls. Not sure that’d help much here as the app is a Trojan but it’d be helpful to limit
539.
by sitharus 9y ago
The most disappointing thing I saw is the resumé. It makes me very sad for the software development profession that actively subverting the privacy of users and controls of their operating system is something seen as a positive.
540.
by sitharus 9y ago
osascript is a desktop automation technology. It can do pretty much anything the current user can do, and the current user can inject things in to the DOM. It’s a very useful thing to be able to do when automating workflows. I just wish App

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