mhandley

56 ms·

661.
by mhandley 8y ago
Maybe it would be a good idea for certificates to expire slowly and randomly over 24 or 48 hours. In other words, if the cert has an expiry date of 12:00 UTC, Dec 6th 2018, then start to randomly fail connections at that time with low prob
662.
by mhandley 8y ago
For those joining late, looks like everything went to plan this time: https://spaceflightnow.com/2018/12/03/soyuz-crew-enjoys-prob...
663.
by mhandley 8y ago
"neither count thou two, excepting that thou then proceed to three."
664.
NASA InSight Lander Arrives on Martian Surface(jpl.nasa.gov)
12 points by mhandley 8y ago|0 comments
665.
by mhandley 8y ago
If you're interested in this, I can recommend Sunburst and Luminary: An Apollo Memoir, by Don Eyles. http://www.sunburstandluminary.com/SLhome.html It was Don who wrote the Apollo lunar module software that handled th
666.
by mhandley 8y ago
This explains a bit about how the THS works: https://www.skybrary.aero/index.php/Trimmable_Horizontal_Sta... The Rostov-on-Don crash in 2016 appears to have been caused by downwards trimming for 12 seconds. This cause
667.
by mhandley 8y ago
On a 737, trim adjusts the pitch of the entire horizontal stabilizer. As such, in the extreme, it actually has more control over pitch than the elevator (which is controlled by the pilot's yoke). If the trim runs out to the limit, an
668.
by mhandley 8y ago
As I see it, in a few years time the market for batteries for electic cars will be a little like the market for DRAM or Flash today. The upfront costs to be able to produce competitively at volume are very high, and although the market is
669.
Producing a fuel from sewage without emitting CO2(uk.businessinsider.com)
1 points by mhandley 8y ago|0 comments
670.
by mhandley 8y ago
It flys in the same way a glider flys. A glider generates lift over the wings, but the lift comes from the airflow, and you get the airflow by trading potential energy for kinetic energy. Thus the glider is always descending through the a
671.
by mhandley 8y ago
You are, of course, correct. That was sloppy writing on my part.
672.
by mhandley 8y ago
Lempel–Ziv–Welch is pretty cute. I love how the decompressor/receiver builds up the dictionary in sync with the compressor/sender at the same point in the datasream without ever needing to store/send the dictionary.
673.
by mhandley 8y ago
What I like about Dijkstra's algorithm is not that you can calculate the shortest path between two nodes, but that you can calculate the shortest path from one node to every other node, and do it one pass in O(n) time. I'm not
674.
by mhandley 8y ago
I'm not sure about that - the NASA commentator says the LES tower was jettisoned pretty much at the time the booster appears to have failed. From her later comment, she doesn't seem to have seen that a failure happened until some
675.
by mhandley 8y ago
At least some of academia agrees with you about Java. Our (large UK university) undergrads learn C, Python, Haskell and Java in their first year. We're aiming for them to get different things from each of these, and also to avoid the
676.
by mhandley 8y ago
You probably wouldn't want to drive in these sunglasses. Normal polarized glasses reduce glare reflecting from damp roads, etc, by blocking horizontally polarized light, as this reflected light is strongly polarized. The polarization
677.
Russia cyber-plots: US, UK and Netherlands allege hacking(bbc.co.uk)
1 points by mhandley 8y ago|0 comments
678.
Which cities will sink into the sea first? Maybe not the ones you expect(theguardian.com)
1 points by mhandley 8y ago|1 comments
679.
by mhandley 8y ago
That's the 2016 Anita paper. There's also a newer Anita paper: https://arxiv.org/abs/1803.05088 . The new paper described in the article is this one: https://arxiv.org/abs/1809.09615
680.
by mhandley 8y ago
Ok, here's an extremely rough back-of-the-envelope calculation. As you'll see, these numbers can be out by orders of magnitude, and it doesn't greatly change the conclusion. Oumuamua interstellar asteroid. 230x35x35m, ~= 280
681.
by mhandley 8y ago
The problem is you don't care about the fastest link on a path - the bottleneck link bandwidth is what matters. The stationwagon isn't the bottleneck; the tape drive is.
682.
by mhandley 8y ago
I'm also a fan of the assertion-evidence style, though I've found over the years that it works better for some talks than others. Animating in an explanation over a series of slides, for example, sometimes doesn't fit that s
683.
by mhandley 8y ago
Remember you're telling a story. Think hard, before you start with slides, what that story actually is. Continuity and flow really matter. Usually the first part of the story of a tech talk explains what the problem is. Many tech ta
684.
by mhandley 8y ago
Replying to myself, I think we can take this further. I know she can see 6 or 8. She knows I can see 10 or 12. She knows that I know she can see 6, 8 or 10. Given this information, we both know that the minimum number she can see that the
685.
by mhandley 8y ago
I wonder if there's too much common knowledge here for the proposed solution to actually work. We both know there are either 18 or 20 statues. I can see 12, so I know from the start my friend can see either 6 or 8. My friend can see
686.
by mhandley 8y ago
I suppose it depends on whether you're more likely to get shot at while changing a broken track wheel, or digging out the vehicle when regular wheels get stuck in the mud/sand.
687.
by mhandley 8y ago
You could of course just carry a regular spare wheel or two. If your fancy trackwheel fails, unbolt it, and fit the regular spare wheel. You're still mobile, just without the ability to switch to track mode.
688.
by mhandley 8y ago
I had my adenoids and tonsils removed as a kid in the early 1970s. Had bad allergies all the way into my thirties, but I have no way of telling if they were the reason I needed to have my adenoids removed in the first place. However, I si
689.
by mhandley 8y ago
I agree about the priorities. But to do what you suggest, to the extend that it needs to be done, we need much better ways to cope with variability of renewables. We probably need a whole range of energy storage solutions; no single one w
690.
Researcher Succesfully Hacked In-Flight Airplanes – From the Ground(darkreading.com)
2 points by mhandley 8y ago|0 comments

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