Arghblarg

joined 1 year ago
[–] [email protected] 0 points 5 hours ago* (last edited 5 hours ago) (1 children)

What I find interesting, then, is what advantage the trilobites may have gained by using a basic mineral for the lenses vs. organic chitin. Chitin must have a transparent form in order to function for the eyes in modern creatures? Hmm.

I read in one paper that trilobites may have actually formed some kind of dual-layer in their lenses to compensate for the double-refraction property of calcite.

[–] [email protected] 0 points 6 hours ago* (last edited 6 hours ago) (3 children)

Ah! So the same as the rest of their hard parts, I suppose. I suspected as much, but couldn't seem to find any paper that explicitly stated this.

Thank you!

In regards to use of calcite vs. chitin: doing a quick search: https://www.ualberta.ca/en/earth-sciences/facilities/collections-and-museums/treasury-of-trilobites/index.html

Were trilobites also unique in using calcite in addition to chitin in their exoskeleton? Do any extant arthropods use calcite in any significant way?

 

I was searching online for quite a while this evening, chasing a half-remembered bit of trivia, that trilobites were supposedly unique in their use of calcite for their lenses, composing the ommatidia of their compound eyes.

It must be so obvious to scientists in the field of studying insects that they never mention it in their papers...

So, what compound(s) do modern arthropods use in their compound eyes. If it isn't calcite, what do modern 'bugs' use?

[–] [email protected] 0 points 3 days ago

Ah, I can try that then, thank you!

[–] [email protected] 0 points 3 days ago* (last edited 3 days ago) (2 children)

OK... so what's the best way to select a different keymap in Wayland? Searching around I see mentions of setting a keymap in config.h and recompiling a compositor.. or 'modifying the system XKB database in /usr/share/X11/xkb' ... or this tool https://github.com/xremap/xremap (have not tried it myself).

I need not just to tweak one or two keys, but to set a entire alt keymap (us,apl). and it has to be changeable on the fly, not statically, via AltGr or other user-defineable key.

I'd like to try KDE again, but last time I tried with wayland the keymap stuff seemed wonky to me.

[–] [email protected] 11 points 5 days ago

Don't be Anatoli Bugorski!

... or the guy involved in the Hanoi Incident.

[–] [email protected] 0 points 1 week ago* (last edited 1 week ago)

Yes, I know they are update services; fair point you make, that those not technically-minded should probably leave them on.

However I personally do not appreciate OS updates, no matter their purported criticality, being installed without my express permission. I am aware of Group policies, but Win11 Home does not officially support them (though one can install gpedit.msc manually; however according to sources I researched, not all policies set will even be honoured by the Home edition).

I did consider scheduling it, just hadn't gotten around to trying it out.

If could, I would wipe Win11 and use native Linux but this laptop is too new and support is poor on it; it's gone as soon as practical :)

[–] [email protected] -2 points 1 week ago (2 children)

Ah, good. I wonder why it isn't used more often -- this wouldn't be such a huge problem then I would hope. (Let me guess -- 'convenience', the archenemy of security.)

[–] [email protected] 14 points 1 week ago (8 children)

I don't know much about NPM (having avoided JS as much as possible for my entire life), but golang seems to have a good solution: 'vendoring'. One can choose to lock all external dependencies to local snapshots brought into a project, with no automatic updating, but with the option to manually update them when desired.

[–] [email protected] 57 points 1 week ago (13 children)

W.T.F.

The US needs to clean house, expand the SCOTUS to put these corrupt judges firmly in the minority so they're ineffective for the rest of their miserable life-long-unelected-terms, if it can't outright impeach them!

[–] [email protected] 9 points 3 weeks ago* (last edited 3 weeks ago)

Aaah! Begone hellspawn!

~~~~      O
~~~~   (R-P-C)
~~~~      E
~~~~      N
 

If you haven't heard of it, this island has a population that the world has collectively decided to leave alone, mostly because they have proven, on multiple occasions, that they absolutely do not want visitors. Like, arrow-to-death anyone attempting to land or even visit near their shores.

This probably cannot go on forever... but maybe, it could. Essentially, we are already implementing a 'Prime Directive' of sorts here. Would the 23rd, 24th, ... centuries in Star Trek canon still have this little island on Earth, isolated from not just from Earth's own unified Federation society, but from the greater Federation races? What steps would the Federation and Earth take to maintain their isolation and the ecosystem on which they depend?

Would make for an interesting episode, or at least a cool side-note reference in one :)

1
submitted 8 months ago* (last edited 8 months ago) by [email protected] to c/[email protected]
 

Best book for learning the ins and outs of MIDI I've ever encountered. Relatively obscure, but an invaluable reference book for anyone wanting to dig into the details of how MIDI works.

 

See linked posting. I've commented there with a link to a CLI tool in Python that allows downloading of IA collections. I've submitted a patch to enable specifying start and end points so that it's easier to resume downloading a huge collection, or to allow multiple people to split up the work.

https://archive.org/details/georgeblood

https://archive.org/details/78rpm_bowling_green

F*ck the RIAA and absurdly long copyright.


EDIT: There is more than one collection of 78s on IA, so I updated the title.


The issue with these collections are that they're absolutely HUGE. And yes, IA offers torrents for them, but as a separate torrent for every. single. album. And the torrents have all data in them -- FLAC, fixed-rate MP3, VBR MP3, PDF liner notes, etc. etc... there may be some extremely hardcore data-hoarders out there who want everything, but IMHO as these are scratchy old 78 records, FLAC is overkill to just save the audio in a listenable format. The George Blood collection, just the VBR MP3s, is looking to be about 6TB. With ALL data it might be over 40TB! I can't afford that many hard drives :)


So, my approach at the moment is to save just the VBR MP3s (they seem to be done at up to 320kbps VBR) and the JPEG album cover. If I have a chance and any storage left afterwards, I can make a separate pass to get the album liner PDFs...


Tool used: https://github.com/jjjake/internetarchive


Patch to allow setting start and end item indices for downloads: https://github.com/jjjake/internetarchive/pull/605


Example usage to grab just the VBR MP3 and record label JPG for each (note the --start-idx and --end-idx arguments):

#ia download --start-idx=4001 --end-idx=8000 -a -i --format="VBR MP3" --format="JPEG" --search collection:georgeblood

I'm going to concentrate on the George Blood collection for now.. I'm starting at item 1. It would be great if others started at index 50,000, 100,000, 150,000, ... and others started at the end and worked backwards in similarly-sized chunks, so that it's assured someone gets each of them.

 

Marked NSFW just in case :)

view more: next ›