Recent submissions

Comment · 2 years ago
Note: There’s a gotcha when using it in multi-user environments (like a server).

Users with Administrator access do not have permission to enumerate directories / files inside other Admin users home directories. So any per-user files are not counted in this scenario.

Source: ‘The mysterious case of the Windows server with a full disk but WinDirStat shows it as only half-full’ :-)

Comment · 2 years ago
IIRC the contract manufacturer, Steyr Magna, historically produced mainly small-run, expensive cars, trucks and military APCs (!).

I suspect that Fisker was spending a lot more per delivered vehicle than their direct competitors like Tesla, Audi, BMW, Polestar. Maybe breaking even on the car itself but having their operating costs (sales) digging a progressively bigger hole each month.

'We lose money on every sale but we make it up in volume!'

Comment · 2 years ago
I did the back-of-envelope calculation [and now you have to read it :)]:

A slug about 2 inches in diameter, 1/4 inch thick, is worth about 1 USD at today's copper price (weight = 1/4 pound).

So it might almost, but not quite, work as coinage. Maybe in a very poor country populated by body-builders.

Comment · 3 years ago
Cracked fuel line? Might let air into the system in certain operating points; might make the fuel pump unhappy (refuses to prime) in some situations. I figured mine out when it finally broke completely: All the other issues went away after replacing it.
Comment · 4 years ago
It has been done earlier; multiple times, by every serious manufacturer. :-]

The real difficulty lies in:

1) Noise in the on-turbine wind speed and direction measurements and/or robustly (see point #2) operating LIDAR or met masts in front of the farm to try to avoid said measurement noise.

2) Actually arriving at a robust, operational in real-world conditions, fully closed-loop control system. A commercial wind farm has to operate 24/7 for 25 years without a bunch of engineers and scientists babysitting it, which is what is likely to end up happening if the cool control system relies on offline simulation results, topographical data, and/or human-supervised calibration & tuning.

It's not all doom and gloom: Ongoing improvements in sensor price/quality will probably make these kind of global control systems more and more practically feasible in the future.

Comment · 4 years ago
Comment · 5 years ago
Thirded - Like many of the less-touristy museums in Rome, it's a museum for grown-ups. I think the average HN'er would appreciate it :)
Comment · 5 years ago
Doubtful of the last paragraph: What kind of clock oscillator 'learns' to keep better time by being adjusted from a better source? A normal crystal doesn't have any memory effect AFAIK.

In a typical real life scenario where the GPS / antenna malfunctions, your server clock will just slowly.. drift.. I.e. the crystal runs a bit too fast or a bit too slow.

Comment · 6 years ago
Howdy neighbor!

Here in Denmark, at the turn of the century, I took a 'classics' class in our equivalent to high school.

A bit of Plato and Socrates, a bit of ancient Greek / Roman architecture (different types of columns?), a smidgen of archeology review.

I imagine it was some kind of condensed and simplified remnant of the broad set of classics courses that would have been compulsory in 'high school' before the democratization of secondary education here (i.e. ~50 years ago our 'high school' was mostly populated by future academics and the children of the upper-middle classes).

Comment · 6 years ago
I wonder if this causes a performance penalty on position independent code, which seems to be used a lot on non-Windows platforms [].

[] It always struck me as one of those propeller-head features that GCC & co. love but which the MS and Intel compilers avoid 'just to be on the safe side' :]

Comment · 6 years ago
>> [...] Haha, that’s interesting, [...]

Sounds like something Dr. Sbaitso would say.. And he's a lot cheaper! :)

Comment · 6 years ago
Kinda-sorta like a mashup of a DOS PC and a Japanese game console of the SNES / Genesis era.

It's cute and retro-cool but also very Japanese, and thus almost entirely unknown in the west.

Comment · 6 years ago
Utilitarianism is incompatible with Morals.

I'm no bible-thumper but I think the man from Galilee had a GOOD point or two.

Comment · 6 years ago
HTTP.SYS is the core of a Windows NT native web server; the async listen/accept loop, IOCP-based data transfer, etc. IIS is built on top of HTTP.SYS. I presume that it ships with Windows for ease of servicing; it is after all a kernel-mode driver (of sorts).

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