jarvist

9 ms·

31.
by jarvist 5y ago
The issue that I find with Google scholar is that it seems very biased by my publications. So it's very good at telling me the latest work related to what I used to work on, but not necessarily what I am currently interested in.
32.
by jarvist 5y ago
There is something general: https://arxivist.com/ Interface is much less polished than ArXiv-sanity. It can also send a daily email of the top 5 for you, which I find very useful.
33.
by jarvist 5y ago
The Raspberry Pi 400 is basically this. https://www.raspberrypi.org/products/raspberry-pi-400/
34.
by jarvist 6y ago
CEO of AstraZeneca: "But the UK contract was signed three months before the European vaccine deal." "When we entered the agreement with Oxford, they had already been working with the UK government on this. " https:&#x2F
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by jarvist 6y ago
As you already have the gnuplot commands, perhaps using Julia + https://github.com/gcalderone/Gnuplot.jl might work? It's a very lightweight package, so even using it directly should be OK. I do all my plotting wi
36.
by jarvist 6y ago
Sort of... but the wind turbines often don't point well when you're at sea, and you intentionally anchor in calm places to avoid the swell. Sailing specific PV would often have 40 silicon cells rather than 36 in series, to provid
37.
by jarvist 6y ago
From the brochure, it's 2300 tons of steel in the substructure vs. 670 ton weight of the towers. It's not stated what fraction of the ballast is fixed, and what fraction is water. Normally the fixed ballast would be rock. I don&#x
38.
by jarvist 6y ago
The new LUMI EU supercomputer in Finland will put its waste heat into a district heating system: https://www.hpcwire.com/off-the-wire/csc-lumi-supercomputer-... I'm sure smaller scale data centre heat to district
39.
by jarvist 6y ago
For matrix manipulation based Fortran scientific codes, ifort/MKL can give +30% compared to gfortran. It's difficult to disentangle where the speedup comes from, but certainly as jedbrown aludes to, the Intel compilers seem to mak
40.
by jarvist 6y ago
Thank you! I wasn't aware of this. But this is only a replacement for libm (i.e. basic trig, exp function), not the matrix-orientated BLAS, LAPACK and SCALAPACK routines that scientific codes spend >90% of their time.
41.
by jarvist 6y ago
Most high performance software on super computers uses the Intel C and Fortran compilers, and much engineering and scientific software on workstations uses the Intel Maths Kernel Library (MKL) for high performance linear algebra. Now that A
42.
by jarvist 6y ago
> But nuclear power plants? Completely uncorrelated. If each one produces power 85% of the time, then you need two, and you'll almost always have power. Not really true. French nuclear output drops every time there's a European
43.
by jarvist 6y ago
Starting with the 2010 introduction of the A* grade, the proportion of grades awarded has been almost constant (25% A/A*, 25% B, 25% C). This is in contrast to the consistent 'grade inflation' visible for the previous twenty
44.
by jarvist 6y ago
Previous YoY was -1.9%/-1.5%. How could +5% possibly be an actual trend? What new magic teaching innovation have independent schools done for this year's cohort, that wasn't available in previous years or to teachers in the
45.
by jarvist 6y ago
No, teachers submitted both predicted grades, and in large cohort classes (such as English and Maths), a rank ordering of the entire cohort.
46.
by jarvist 6y ago
It's more complicated than this. They haven't just taken the rank ordering by the teachers and projected onto a curve. Here is the 319 page document published on results day. This is the totality of the current description of the
47.
by jarvist 6y ago
Almost all scientific computing. In spite of considerable effort, there are relatively few workloads that use GPUs well, and even for codes which do work on GPU, you tend to end up with partial functionality, and a very restrictive region
48.
by jarvist 6y ago
The vast majority of time on research supercomputers is used in running Fortran codes. (Click on 'languages' https://www.archer.ac.uk/status/codes/ , this is the UK national facility.) And yes, as you&#x
49.
by jarvist 6y ago
I have these shell aliases configured, to check and delete the master connections. (Often I end up with stale connections when I have a VPN up, and then just sleep my laptop.) alias ssh-MasterConnection-check="ssh -O check " alias
50.
by jarvist 7y ago
grep -B / -A / -C [lines Before / lines After / lines of Context] is very useful for when you have multi-line text you want to extract.
51.
by jarvist 7y ago
I read this as a kid: https://www.amazon.co.uk/Cartoon-Guide-Genetics/dp/006273099... It provides a very useful bridge from a mechanistic / physic-y / computer point of view, to the more messy biochemist
52.
by jarvist 7y ago
I'm not sure if this article hammers home the key point: extracting carbon from the air always takes more energy that was gained by burning the fossil fuel to make that carbon. This is inevitable due to the entropy cost of de-mixing CO
53.
by jarvist 7y ago
By vibrational spectroscopy. You compare the microwave / infrared spectrum of a compound measured in the lab, to data from telescopes. Fullerenes are by far the largest molecules positively identified in space. Due to the high symmetry
54.
by jarvist 7y ago
No, it sounds like a telescope focusing onto a single pixel (i.e. just the back of the curtains), and then using the output from this pixel with a lock-in amplifier tied to the broadcast signal. The sensitivity would be enormous due to the
55.
by jarvist 7y ago
Like Chernobyl, AGR reactors do not have secondary containment: the idea was that as they are gas cooled (no water to phase change) and have enormous cores (so much more time to deal with heat build up), they are safe enough to not need it.
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by jarvist 7y ago
In terms of commercially available bulbs, the 'Philips Master LED ExpertColor' (all in spotlight 'GU10' etc. format) have an extremely high quality halogen-like spectrum.
57.
by jarvist 7y ago
Chapters 0 and 1 in this book by Mattuck are also a fantastic read for a general audience interested in what's going on 'under the hood'. https://www.amazon.co.uk/Feynman-Diagrams-Many-body-Problem-... Feynm
58.
by jarvist 7y ago
If you want to be more environmental, use power when the current carbon intensity of the grid is low. Effectively you are then providing demand-side management to reduce overall carbon dioxide production. https://carbonintensity
59.
by jarvist 8y ago
vim: https://github.com/JuliaEditorSupport/julia-vim I have an F-key shortcut in my .vimrc to turn this on mainly for non-Julia files, so that I can type (maths-y) unicode in Markdown / text files.
60.
by jarvist 8y ago
The German academic system is extremely hierarchical. So the head of the lab will be on all of the papers, in spite of having no academic input etc. Possibly the German PhDs you've met have inherited this toxic system as being the ma

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