University of Stanford spinout company by 
Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01
Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01Sections with
sh_type == SHT_STRTAB are called string tables.They hold a null separated array of strings.
Such sections are used by other sections when string names are to be used. The using section says:
- which string table they are using
- what is the index on the target string table where the string starts
So for example, we could have a string table containing:
Data: \0 a b c \0 d e f \0
Index: 0 1 2 3 4 5 6 7 8The first byte must be a 0. TODO rationale?
And if another section wants to use the string
d e f, they have to point to index 5 of this section (letter d).Notable string table sections:
.shstrtab.strtab
Holds strings for the symbol table.
This section has
sh_type == SHT_STRTAB.It is pointed to by outputs:
sh_link == 5 of the .symtab section.readelf -x .strtab hello_world.oHex dump of section '.strtab':
0x00000000 0068656c 6c6f5f77 6f726c64 2e61736d .hello_world.asm
0x00000010 0068656c 6c6f5f77 6f726c64 0068656c .hello_world.hel
0x00000020 6c6f5f77 6f726c64 5f6c656e 005f7374 lo_world_len._st
0x00000030 61727400 art.This implies that it is an ELF level limitation that global variables cannot contain NUL characters.
Spin like mad between:
- standards
- high level generators. We use the assembler
asand linkerld. - hexdumps
- file decompilers. We use
readelf. It makes it faster to read the ELF file by turning it into human readable output. But you must have seen one byte-by-byte example first, and think howreadelfoutput maps to the standard. - low-level generators: stand-alone libraries that let you control every field of the ELF files you generated. github.com/BR903/ELFkickers, github.com/sqall01/ZwoELF and many more on GitHub.
- consumer: the
execsystem call of the Linux kernel can parse ELF files to starts processes: github.com/torvalds/linux/blob/v4.11/fs/binfmt_elf.c, stackoverflow.com/questions/8352535/how-does-kernel-get-an-executable-binary-file-running-under-linux/31394861#31394861
This is likely the easiest one to produce as the frequencies are lower, which is why it was discovered first. TODO original setup.
Also because it is transparent to brick and glass, (though not metal) it becomes good for telecommunication.
Some notable subranges:
At 7e4cc9e57de76752df0f4e32eca95fb653ea64e4 you basically need to use the Docker image on Ubuntu 21.04 due to pip breaking changes... (not their fault). Perhaps pyenv would solve things, but who has the patience for that?!?!
The Docker setup from README does just work. The image download is a bit tedius, as it requires you to create a GitHub API key as described in the README, but there must be reasons for that.
Once the image is downloaded, you really want to run is from the root of the source tree:This mounts the host source under The meaning of each of the analysis commands is described at Section "Output overview".
sudo docker run --name=wcm -it -v "$(pwd):/wcEcoli" docker.pkg.github.com/covertlab/wholecellecolirelease/wcm-full/wcEcoli, so you can easily edit and view output images from your host. Once inside Docker we can compile, run the simulation, and analyze results with:make clean compile &&
python runscripts/manual/runFitter.py &&
python runscripts/manual/runSim.py &&
python runscripts/manual/analysisVariant.py &&
python runscripts/manual/analysisCohort.py &&
python runscripts/manual/analysisMultigen.py &&
python runscripts/manual/analysisSingle.pyAs a Docker refresher, after you stop the container, e.g. by restarting your computer or running
sudo docker stop wcm, you can get back into it with:sudo docker start wcm
sudo docker run -it wcm bashrunscripts/manual/runFitter.py takes about 15 minutes, and it generates files such as reconstruction/ecoli/dataclasses/process/two_component_system.py (related) which is required to run the simulation, it is basically a part of the build.runSim.py does the main simulation, progress output contains lines of type:Time (s) Dry mass Dry mass Protein RNA Small mol Expected
(fg) fold change fold change fold change fold change fold change
======== ======== =========== =========== =========== =========== ===========
0.00 403.09 1.000 1.000 1.000 1.000 1.000
0.20 403.18 1.000 1.000 1.000 1.000 1.000 2569.18 783.09 1.943 1.910 2.005 1.950 1.963
Simulation finished:
- Length: 0:42:49
- Runtime: 0:09:13TODO compare with actual datasetes.
Generalization of AlphaGo Zero that plays Go, Chess and shogi.
- www.science.org/doi/10.1126/science.aar6404 A general reinforcement learning algorithm that masters Chess, Shogi, and Go through self-play by Silver et al. (2018), published without source code
- www.quora.com/Is-there-an-Open-Source-version-of-AlphaZero-specifically-the-generic-game-learning-tool-distinct-from-AlphaGo
www.quora.com/Which-chess-engine-would-be-stronger-Alpha-Zero-or-Stockfish-12/answer/Felix-Zaslavskiy explains that it beat Stockfish 8. But then Stockfish was developed further and would start to beat it. We know this because although AlphaZero was closed source, they released the trained artificial neural network, so it was possible to replay AlphaZero at its particular stage of training.
Interesting AtomSea & EMBII uploads by Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01
Ciro Santilli 35 Updated 2025-01-10 +Created 1970-01-01tx e3e37ed5c1de2631c147bd39429e42ff634e95b7d72423bc32d6c6b9d8eef8ee (2014-07-01):
For my first official Journal entry I've decided to archive some old poetry. Here are a few of the computational poems I've created using cyphers.
Shiemaa&Vincent.jpgMessage:TODO identify Shiemaa and Vincent.
"Even if we tried to do it on purpose, never would have we succeeded." My beloved Vincent.
tx 36d0d77acd760f0aa549b6b314f0c1e9690baa6bcc2d0f07ea9f3167f4a5ec99, block 318836 (2014-09-03)Cost: ~0.002 BTC ~ $0.77 at the time.
Several other interesting uploads were also made around block 318836 (September 2014):
RedRaven.jpgbitfossil.org/e17b83234402d85f3a18207eec11bc5c4397f88aa880aae4fb7d15802806a971/index.htmEarth3Archive.jpgbitfossil.org/ae8d3b46b934bedc363e11abe8c8607171994470957c286274f699a0b3a9bbd7/index.htmSkyEarth5Archive.jpgbitfossil.org/ae8d3b46b934bedc363e11abe8c8607171994470957c286274f699a0b3a9bbd7/index.htm
BikeLady.jpg
Arecibo_message.svgArecibo message on tx c6d2e535cd2ba4659e954a61198c66fd98c60f6475cf8ff92a404f3fe3a16c4b, block 337874 (2015-01-07)
An "artificially" colored visualization of the Arecibo message ripped from Wikipedia: en.wikipedia.org/wiki/File:Arecibo_message.svg (with attribution).
The cool thing about this image is that it highlights the striking parallels between the encoding of the Arecibo message with crypto graffiti, because in both cases people were creating undocumented new ways of communicating with strangers on a new medium in those early blockchain days.
The associated message contains the Arecibo message as ASCII 0's and 1's. When properly cut at the newlines, they draw the message as ASCII art, as the original Arecibo encoding intends, here's a version with the 0's replaced by spaces to make it more readabale:
1 1 1 1
1 1 1 1 1
1 1 1 1 1 11 1
1 1 1 1 1 1 1 1 1 1
11
11 1
11 1
1 1 1
11111
11 111 11 11
1 11 1
11 1 11 11 11 1
11111 11111 11111 11111
1 1
1 1
11111 11111
11 11 111 11
1 1 1
11 1 11 111 11 1
11111 11111 11111 11111
1 11 1
11
1 11 1
11111 11 11111
11
1 1 1
1 11 1
11 11 1
11 1 11
11 11
11 1 11
11 11 1
1 1 1
1 11 1
1 11 1
1 1 1
1 1 1
1 11
11 11
1 111 1 11
1 1
1 11111
1 1 111 1 1 11 11
1 111 1 111111
1 111 111 11 111
1 1 111 11
1 1 1 111111
1 1 1 11
1 11 11
111 1
111 1 1 1 1 1 1 1 1
111 1 1 1 1
1 1
11111
111111111
111 111
11 11
11 1 1 11
11 11 11 11
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1
1 1 1
1 1
1 1 1
1111 11111 1 1111
He sleeps in a temple.jpg
PIA17563.jpg
. Source. Associated message:
NASA: A purple nebula, in honor of #Prince, who passed away today. Image: Crab #Nebula, as Seen by Herschel and #Hubble Image credit: ESA/Herschel/PACS/MESS Key Programme Supernova Remnant Team; #NASA, ESA and Allison Loll/Jeff Hester (Arizona State University) #PIA17563
Dr_Craig_Wright.jpg
. Source. Associated message:
The image is present e.g. at: www.kitguru.net/channel/jon-martindale/australian-man-claims-he-is-satoshi-nakamoto-bitcoin-creator/ It was inscribed about two months after Craig publicly claimed that he is Satoshi.
This is a relatively unusual AtomSea & EMBII upload as it does not have the common toplevel transaction, everything, text + image fits into a single transaction. This is perhaps why the image is relatively low resolution to have a smaller size.
YellowRobot.jpgYellow Robot on tx 67b2facfd8160d4fa11b02829b6387d07537b57a7a24f19b029b2a5ae7b81830, block 450516 (2017-01-29)
Photography by EMBII, original art by TODO.
The associated message reads:This is one of Ciro's favorite AtomSea & EMBII uploads. This is the cutest thing ever, and perfectly encapsules the "medium as an artform" approach to blockchain art. More Chiharu stalking at: ILoveYouMore.jpg.
Chiharu and I found this little yellow robot while exploring Chicago. It will be covered by tar or eventually removed but this tribute will remain. N 41.880778 E -87.629210
At twitter.com/EMBII4U/status/1615389973343268871 EMBII announced that he would be giving off shares of that image on a Bitcoin-based NFT sale system he's making called Sup!?, and in December 2023 gave some shares to Ciro Santilli. Amen.
Other possibly novel EMBII street photography:
- bitfossil.com/f2efd446475ad58a3ea808cc0f05a63c55cece9fced70d84799a1ffce5d307e4/index.htm "I will not Stop until the Finite becomes the Infinite."
Audio:
alien.wavblock 318638 bitfossil.org/a3a24d6ea01ce481a50346818b8977220687f3ba385838fe8894ce61c9718bbc/OneGiantLeapForMankind.mp3at tx 4f5b25fa8021c67235423930580e69121aa0d2c2bb779f75139bf442f8dc7297 EMBII-indexed at 743f3286b00fc96c13db4b16d5aead8a1e059fee9ce775b1761be9be5bdc2501 and then indexed at: 0427ec598df38b7d7dc75721316c0bbdec54de4871e11aff8ea64f3717c07efbThe toplevel index does appear on Bitfossil: bitfossil.org/0427ec598df38b7d7dc75721316c0bbdec54de4871e11aff8ea64f3717c07efb/index.htm but the audio is not there as it was for Spock below, maybe a bug on upload/Bitfossil?Spock_Live_Long_And_Prosper.mp3block 345858 bitfossil.org/1bc87dbff1ff5831287f62ac7cf95579794e4386688479bab66174963f9a4a0c/index.htm. Audio of Mr. Spock saying the Vulcan salute.OuterSpace.mp3block 409471 bitfossil.org/c14c1bd862bab6269052bf0a2cda7a35940d7a2d9c3415d4fb8fb8dcb9394fae/ "Outer Space by embii 4MB Large file storage test Apertus 0.3.5-beta" OMG, I don't want to calculate how much it cost to upload this, it will make me sad.At twitter.com/EMBII4U/status/1655969645927563266 EMBII mentions that this inscription, made by him, is the largest inscription he knows of.TODO song composer/performer?- bitfossil.com/c2b170ff450f4529dfbd784e0cf5cdddaca494e67a243dd846c0a9450a5558af/ (2021-03-13) contains
Seikilos.mid, a MIDI file
Interesting text:
- block 273522 bitfossil.org/70fd289901bae0409f27237506c330588d917716944c6359a8711b0ad6b4ce76/index.htm pi to 1000+ decimal digits:
- bitfossil.org/8522787e7e49f3f3b6a9f9e86bc30336d26a3acbaecc93809d2e8b4bb1c4d611/ "Antarctic Ice Cores Revised 800KYr CO2 Data" evidence for global warming
- bitfossil.org/ffa6893a70bcde9b940df9823e0f597f0b6cff964c78473c77db838655e1aeb5/ en.wikipedia.org/wiki/Laudato_si', global warming related
HTML pages:
- block 335290 bitfossil.org/0166db6053f1969c28de8b1f9a8fa4ec890cc4bdfee7602757993b306bb7f295/ JavaScript animated timer clock counting down until the start of the next year
- block 340379 bitfossil.org/062990d54045a9c316110fb713009d1313b2f64c4b216d66891c7284d6c1ca0e/ links to bitfossil.org/062990d54045a9c316110fb713009d1313b2f64c4b216d66891c7284d6c1ca0e/bong-ball.html and has a working JavaScript Pong
- block 328445
tom-signature.jpgbitfossil.org/daa050bf8ac22752e40412c9265b4533f68ab8e6ed26d2db1eeee6710e7d9e4b/index.htm Unrendered HTML of:Likely an obituary for: Thomas L. Magliozzi. Images show fine though.- www.cartalk.com/content/tom-and-rays-bios-photos-2
- www.cartalk.com/content/rant-and-rave-36 "The New Theory of Learning" which agrees perfectly with backward design
- block 401648 bitfossil.com/31c5e5336512568e4a1deb4bbf0e57c3565c32094c0e1a118c48e7929ab49e35/bong-ball.html another one! This one is full-screen, and does not have JavaScript
alerts :-) - block 401657 bitfossil.org/03cb74f270d498302d4dd9cbe82c090d801c8840ab6cb26b71d862489b981db8/ has a JavaScript Pac-Man
Good animation explaining it: Video "Electron transport chain by HarvardX (2017)".
There are unlisted articles, also show them or only show them.