Request for help (librarians especially!!); Boosts++
I've got a request from a friend on another instance for help looking for scholarly resources about audience engagement with the performing arts, specifically marching bands, if possible
Would there be a librarian available to point us in the right direction?
You ever need to do regression through the origin and really, like, _really_ want to cancel out parts of sums? Also, my google foo yields depressingly little info on the whole thing, at least on a level I can grasp (not familiar with regression in matrix notation yet, and multiple regression is also a topic for the coming weeks).
Sigh. Math is just too math for me.
If you're into self-inflicted pain like me (or just want to try to undertand how to kind of manage a TeX-distribution and use TinyTeX instead of TeXLive et al) … uh, long story short: This tool: https://ctan.org/pkg/texliveonfly can parse your .tex file and auto-install all the packages you'll need. It's magic. I love it.
Turns out my package build on travis is failing because apparently the check process uses http://worldclockapi.com/api/json/utc/now to check for the local time. Which is currently 403. Which is… a bummer? One might assume that "figuring out what time it is" would be a solved problem, but alas, 'twas naive.
So plants use photosynthesis to take in carbon dioxide and give out oxygen, but it doesn't directly convert the two.
That oxygen actually comes from water, and because Earth is a closed system, a lot of water molecules have been water molecules for a long, long time until a plant picks them up. A lot of them are drunk by animals in the meantime.
Dinosaurs were on Earth for 179 million years. So it's very likely that some of the oxygen atoms you're breathing right now were once dinosaur pee.
Sigh. I wish all the #rstats Twitter people were on here. I really don't like having to open Twitter to see what's new these days.
So I made a thing.
The green on this graph shows where chlorophyll b absorbs (the type mostly used by plants). You can see it catches light in two places. Near 450nm (the blue end of the spectrum) and around 650nm (in the red).
The two lines show the wavelengths emitted by LED lights. Blue is cool white and red is warm white. Both have a spike in emission around chlorophyll's blue absorption and broad emission over the red absorption.
In other words, this is why houseplants like LED lighting!
Does things with #rstats. Technically studied public health.
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