mhandley

87 ms·

691.
by mhandley 8y ago
If you're trying to cover a 20% variability in PV from day to day, isn't it cheaper to just 20% overprovision PV? You can use the spare electricity on good days for desalination or aluminium smelting, or something that doesn&#x27
692.
by mhandley 8y ago
Despite that, UK life expectancy (81.2 years) is higher than California (80.8 years). Not that the UK scores especially highly on this measure - plenty of countries do better.
693.
by mhandley 8y ago
While your data are no doubt correct, this doesn't stop it being true for California. Just because a state is now suffering from out-migration doesn't indicate it didn't become wealthy from migration in the past, nor does it
694.
by mhandley 8y ago
Yes, and it's the main reason our economy hasn't tanked. But there have traditionally been more barriers to movement from the EU, not least language, so the effect is somewhat less, and easy immigration from the EU hasn't be
695.
by mhandley 8y ago
That shows the power of immigration. I'm not even talking about immigration from outside the US, though that's significant too. California has such high GDP per capita because it draws well educated people from the rest of the U
696.
by mhandley 8y ago
Yes, but this is both a global problem and a local one. Not all plastic waste travels long distances, and certainly isn't a global problem in the Mediterranean or Baltic. It is still worth Europe limiting plastic waste, even if no-on
697.
by mhandley 8y ago
So in light of Spectre, the Chrome developers don't believe it's safe to have any sensitive data in the same memory space as V8, but WebAssembly is safe in ring 0? What am I missing here? https://chromium.googlesource.c
698.
by mhandley 8y ago
Yes, I had the same issue. Selected just the minimal cookies they said they needed to run the site. Site makes you way several minutes while the "process your request". Then got locked out. Oh well, another site I can live wit
699.
by mhandley 8y ago
Engadget's GDPR consent to track seems really odd. They say they need to track you to provide service. If you don't click OK, and select "Manage Options" you eventually get to select the ad providers you let them share
700.
by mhandley 8y ago
London St Pancras to St Albans (a medium size town north of london) is 25 miles. The train takes 19 minutes.
701.
by mhandley 8y ago
I don't work on these radar systems, but have played a lot with ultrasound for robotics. It seems possible these radar systems give almost continuous false positives. You could get a pretty strong return from potholes, slightly sunke
702.
The Longest Tech Support Call: Apollo 14 Computer Hack(hackaday.com)
2 points by mhandley 8y ago|0 comments
703.
by mhandley 8y ago
The definitions are here: http://www.wovo.org/aviation-colour-codes.html Red means either "Eruption is forecast to be imminent with significant emission of ash into the atmosphere likely." or, "Eruption is
704.
UK ups the ante on Galileo sat-nav project(bbc.co.uk)
1 points by mhandley 8y ago|0 comments
705.
by mhandley 8y ago
For all of us living in London in 1987, I think the Kings Cross fire is the first thing that comes to mind if you mention wooden escalators. We just took for granted that the underground was safe; I used to really like the old wooden escal
706.
by mhandley 9y ago
It's been a long time, but I'm fairly sure it was 110 baud RS232, 7 bit ASCII, all upper case. I think it was an ASR 33, or at least I recall it looking like this: https://en.wikipedia.org/wiki/Teletype_Model_
707.
by mhandley 9y ago
I also had a bedroom full of electronics in the late 1970s/early 1980s. I certainly wasn't a rich teenager. All the audio gear was given or scrounged. For example, I got given a very good turntable by the father of a friend of
708.
by mhandley 9y ago
I bet anyone who has worked on congesion control has war stories to tell. With me, it was when we were working on TFRC around 2001: https://tools.ietf.org/html/rfc3448 We were testing tweaks to the algorithm, sending
709.
by mhandley 9y ago
The original 1988 Congestion Avoidance and Control paper is still well worth reading: http://ee.lbl.gov/papers/congavoid.pdf The observations about timers and ack-clocking are still as relevant today. That's not t
710.
Facebook facial recognition faces class-action suit(bbc.co.uk)
1 points by mhandley 9y ago|0 comments
711.
by mhandley 9y ago
I'm with you - I find both AV1 and x265 to be over-smoothed. On the other hand, at these compression ratios, you don't get something for nothing, and I certainly appreciate the lack of block artifacts.
712.
by mhandley 9y ago
I've no idea what techniques will actually be applied by operators - I never expected middleboxes to go to the extremes they currently do either. But the technique I mentioned, of briefly delaying a short burst of packets, if done onl
713.
by mhandley 9y ago
Knowing the RTT seen by actual user traffic is useful because, for example, it lets you observe if that traffic is encountering excessive queuing. It's hard to know this by other means; for example you may think you can just ping the
714.
by mhandley 9y ago
I was in the IETF meeting. It was actually a very civil discussion, and I think almost everyone in the room could see both sides on the issue. On the one hand, we've seen increasing problems with middleboxes making assumptions about
715.
by mhandley 9y ago
Agreed - without knowing more about the data provenance, all I can show here are deviations from the long-term trend. It's enough to see the recent problem clearly, but I wouldn't trust the increase after day 900 to be real. Mos
716.
by mhandley 9y ago
French grid data from RTE is available from http://www.gridwatch.templar.co.uk/france/ I took the frequency data from the last 1200 days, and calculated the cumulative drift. The raw drift graph, assuming 50Hz is nom
717.
by mhandley 9y ago
Where does that 50.01 number come from? For the last 25 minutes, the UK grid figures have been: 50.217999 50.049999 49.990002 50.016998 50.106998 50.091999 They seem to go well above 50.01 for significant periods. Data from http:&#x
718.
by mhandley 9y ago
If you're not limited by propellant, it seems like this would be really useful for satellites that need to change orbit frequently. Performing a plane change, for example, normally requires a prohibitive amount of propellant, but if t
719.
by mhandley 9y ago
Another great resource on hardware extensions for security, including efficient tagged memory, is the Cheri work at Cambridge: http://www.cl.cam.ac.uk/research/security/ctsrd/cheri/
720.
by mhandley 9y ago
Yes, the centripetal acceleration only starts to get reasonable (ie less than 10g) with a 20km radius centrifuge. The only practical way to do that would be an evacuated circular tunnel equipped with a maglev. Maybe that's their solu

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