andyljones

10 ms·

61.
Some simple epidemiology: estimating the number of Wuhan virus cases(imperial.ac.uk)
2 points by andyljones 7y ago|0 comments
62.
by andyljones 7y ago
What's the one place?
63.
The Tomb of the First Emperor still hasn't been opened, 40 years after discovery(en.wikipedia.org)
5 points by andyljones 7y ago|0 comments
64.
by andyljones 7y ago
There is some skepticism around this to say the least[1]. The core of it is that this group has found new bosons twice before: The Atomki group has produced three previous papers on their beryllium-8 experiments — conference proceedings in
65.
The Minimum Sized Universe Needed for Life [Paper](arxiv.org)
2 points by andyljones 7y ago|0 comments
66.
by andyljones 7y ago
Not since the advent of modern adaptive optics[1]. Ground-based telescopes now outperform space telescopes in the visible spectrum[2]. For as long as the cost per kilo to orbit is higher than the cost per kilo to the Atacama desert, ground-
67.
Importing the US Startup Playbook to Developing Countries(benkuhn.net)
4 points by andyljones 7y ago|0 comments
68.
by andyljones 7y ago
I'm - surprisingly - fairly happy with this whole scheme. A short test and £9/year is a lot lighter weight than I was expecting after the Heathrow debacle.
69.
You now need an annual license to own or fly a drone in the UK(caa.co.uk)
17 points by andyljones 7y ago|7 comments
70.
by andyljones 7y ago
Physiologically there's no difficulty in pushing your circadian around. Heck, various studies have shown that in isolation people's clocks will drift by an hour or more a week. Culturally though, there is a preferred cycle, and it
71.
by andyljones 7y ago
Paper: http://www.physics.usyd.edu.au/~jbh/share/Papers/JBH-Ionizat...
72.
by andyljones 7y ago
Yeah, the absolute limit is c^2 if you've got 50-50 matter-antimatter. The efficiency however is brought down by the difficulty of _producing_ antimatter in the first place. A more popular hard-sci-fi concept is black hole engines; a 6
73.
Energy Scavenging from a 2C temperature gradient (Jan 2019) [pdf](researchgate.net)
2 points by andyljones 7y ago|1 comments
74.
by andyljones 7y ago
Microsoft has $130bn cash-on-hand. The surprise is really that they're not being more aggressive in their acquisitions.
75.
by andyljones 7y ago
What's the enabling technology behind this? USB4's 40GBit/s is 8x USB3's original 500MBit/s. USB3 was first launched in 2008. Processors have not gotten 8x faster since 2008, so why haven't these kind of speeds
76.
Albert Stevens(en.wikipedia.org)
66 points by andyljones 7y ago|3 comments
77.
by andyljones 7y ago
This is really helpful, thanks. It's been... a few years since I read Skiena, and I came to it from a maths background. I'll add the disclaimer in future that Cormen's easier to start with.
78.
by andyljones 7y ago
Well this is superb. I've traditionally given my own piecemeal answer to the teach-myself-cs question, but I'll be handing this link out in future.
79.
by andyljones 7y ago
Skiena's Algorithm Design Manual: https://www.amazon.com/Algorithm-Design-Manual-Steven-Skiena... Far more readable than the usual text (Cormen), the first half is a guide on how to select and design algorithms for the
80.
by andyljones 7y ago
Sourced from Josh Pollack on Twitter, where he brought it up in response to Trump's comments on the Russian missile explosion: https://twitter.com/Joshua_Pollack/status/116135859677872537... He also links to
81.
Kilopower: NASA's compact nuclear reactor prototype (2018) [pdf](nasa.gov)
3 points by andyljones 7y ago|1 comments
82.
by andyljones 7y ago
Someone in the know - why do you need a supercomputer for this? From an amateur position it seems suitable for commodity compute and a big ol map-reduce. Getting chunk edges to align might be tricky, but the usual solution to that is to sta
83.
by andyljones 7y ago
I can't find a good comparison to Conda - is the main distinction simply that Poetry uses the official repos? For people working outside of scientific Python: conda is a package and env manager maintained by a private company that&#x27
84.
Swiss Federal Railways has a ML train scheduling competition; $30k in prizes(aicrowd.com)
1 points by andyljones 7y ago|0 comments
85.
by andyljones 7y ago
The intro mentions that plotting telescope scale versus cost over the last few decodes, a 150m telescope would be $35bn. More generally, the high-res-low-collecting area setup is already hugely valuable in interferometers. This is, in a sen
86.
by andyljones 7y ago
The author seems to be pretty receptive to questions on Twitter: https://twitter.com/david_kipping/status/1157088879817764864