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For discussion of Science, Technology and Math

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File: kot2.jpg (214.77 KB, 732x558, 122:93, 1598451188039.jpg) [Show in Hex Viewer] [Reverse Image search]

 No.405[Reply][D]

Looking for some books about machine learning in chemistry. My dream engineer thesis is to write something on this subject.

 No.409[D][DF]

>>405
bump

 No.410[D][DF]

>>409
I ain't got the slightest clue what machine learning in chemistry is but here's some pdfs I found
https://arxiv.org/ftp/arxiv/papers/1701/1701.04503.pdf
https://arxiv.org/ftp/arxiv/papers/1904/1904.10370.pdf
http://www.chem.cmu.edu/groups/yaron/projects/ml.html


File: game_of_life.gif (3.71 MB, 200x200, 1:1, 1598271091709.gif) [Show in Hex Viewer] [Reverse Image search]

 No.392[Reply][D]

Ever since I discovered it, I was fascinated by Conway's Game of Life. For those of you, who are not familiar with it: it is a cellular automaton with two dimensions on a rectangular grid with each cell having either the state "dead" or "alive". From any given state, the next state is computet by a very simple set of rules:

-if a cell has less than two neighbors it dies
-if a cell has two or three neighbors it lives on
-if a dead cell has three neighbors it becomes alive
-if a cell has more than three neighbors it dies

The attached image shows what patterns emerge. You can see still live, oscilators and gliders fliing around.

More info in these formations on wikipedia: https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life

But what is even more fascinating is that people built very complex structures in Game of Life. Like spaceships, cannons or even functioning CPUs.

https://www.youtube.com/watch?v=-FaqC4h5Ftg
https://www.youtube.com/watch?v=8unMqSp0bFY
Post too long. Click here to view the full text.
9 replies (and 1 image reply) omitted. Click here to view.

 No.402[D][DF]

>>401
The answer on stack says it takes 11,520 generations per clock count (I guess it means for 1 minute)
Also that simulator site allows to set the framerate. So: (from a comment on stack)
>24 FPS with a Generation Step of 8
>24 x 8 x 60 = 11520
Should work. I don't how precise it is, and you'd need to start it perfectly on time, but it would be fun

 No.403[D][DF]

>>402
As far as I understand it, the "step" parameter is the amount of steps per frame. So with a step value of 512 and fps of 20 that is 10240 steps per second.

The Problem is, that it displays only every 512th step. If it took only 3600 steps for a minute it would show every step with 60fps (60 steps per second * 60 seconds in a minute).

 No.404[D][DF]

>>403
Sadly that can't work with the current design
>At the very top, there's the clock. It is a 11520 period clock. Note that you need about 10.000 generations to ensure the display is updated appropriately, but the design should still be stable with a clock of smaller period (about 5.000 or so - the clock needs to be multiple of 60).
You'd need to redesign the thing for a smaller display, or it would all just be a mess


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 No.341[Reply][D]

Nuclear waste lasts a long time, like super long. We're talking longer than all of recorded history by orders of magnitude. Right now, the only way we know how to deal with this waste is to bury it somewhere and put up a bunch of signs that say "there's a bunch of radioactive material here, so put away that shovel." The problem is, language changes over time. English from a mere 500 years ago is nearly indecipherable to anyone without a college degree. How do we tell people 10,000 years in the future to stay away, without dedicating the resources to constantly maintain these burial sites? What if we get sent back to the stone age by a meteor impact, massive pandemic, or nuclear holocaust? What then?
The Sandia Report gives 9 messages that need to be conveyed:
>This place is a message... and part of a system of messages... pay attention to it!
>Sending this message was important to us. We considered ourselves to be a powerful culture.
>This place is not a place of honor... no highly esteemed deed is commemorated here... nothing valued is here.
>What is here was dangerous and repulsive to us. This message is a warning about danger.
>The danger is in a particular location... it increases towards a center... the center of danger is here... of a particular size and shape, and below us.
>The danger is still present, in your time, as it was in ours.
>The danger is to the body, and it can kill.
>The form of the danger is an emanation of energy.
>The danger is unleashed only if you substantially disturb this place physically. This place is best shunned and left uninhabited.
Humans are notoriously curious, so it's rather difficult to keep them out of the metaphorical cookie jar. Especially when said cookie jar is filled with the curses of ancient gods. Written language is useless, as has been covered, and word of mouth is dodgy at best. So it's down to symbols to communicate the message of "bad, stay away." These range from fairly tame, like a grimacing human face, to badass, like so-called "hostile architecture" (pic related)
So, my question to you and the purpose of this thread is, what is YOUR solution to the problem of communicating danger to future Post too long. Click here to view the full text.
3 replies omitted. Click here to view.

 No.359[D][DF]

>>341
Kind of related, I was watching archaeologists excavate an old Roman town in England somewhere. It was live-streaming on the internet and they dug up the blacksmith and the air filled with lead fumes and they all had to leave and cancel the live stream.

 No.366[D][DF]

I think that problems like these will sort themselves out. Say that theoretically all knowledge of the present is destroyed. The descendants of the survivors build their own primitive cultures, with traditions and taboos. People who dwell in radioactive locations will become sick and die. Stories of those peoples sickness will spread and locals will come to understand such a place as dangerous, cursed, etc.: a place to avoid. Rebellious idiots break the taboos and go there and die, and are a sacrifice to the survival of the traditions and thus to the society. And the cycle continues.

 No.390[D][DF]

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>>341
You can avoid the linguistic problem by image-idea rather then word-idea key pairs.
I would do something like this:
Put three of four statues of humans with waste
One where human is healthy, digging
One where he comes close the marked item
One where he is sick and close to death
They would go one taller than the other, or only be viewable in such a way that the sequence would be pretty clear. One other suggestion I've heard was to incorportate folk stories with clues to these dangerous places, but in my opinion people would forget the important details quite fast.


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 No.34[Reply][D]

Seems like the right board for this.
Theories, cool shit, creepy shit, whatever you got regarding the ocean (especially the deeper parts), put it here.
https://www.youtube.com/watch?v=L8xXnVkOGsA
https://www.youtube.com/watch?v=YaPZUsiiqzw
https://www.youtube.com/watch?v=GJPRW92Yqd0
https://en.wikipedia.org/wiki/Mantis_shrimp can punch hard enough to cause flashes of light, or so I've heard.
https://en.wikipedia.org/wiki/Bloop (Probably just an iceberg breaking up, but still pretty neat)

>tfw you'll never be a crew member on board the Nautilus
It hurts.

 No.363[D][DF]

>>34
Although cuttlefish aren't the deep sea type, they are pretty cool
https://youtube.com/watch?v=YcpzubpIhtI
Look at him, so huge, lures all over his body. looks lovecraftian!
https://youtube.com/watch?v=anDIlMVgNwk


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 No.138[Reply][D]

NANO GANG BEST

Fuck all you vim faggots, nano is best editor
7 replies (and 1 image reply) omitted. Click here to view.

 No.256[D][DF]

>>255
AHAHAHAHAHAH fucking namefagging
I always forget to remove the name on the next post

 No.316[D][DF]

what the fuck are you doing not using sublime text

 No.360[D][DF]

>>138
both are extremely cool


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 No.229[Reply][D]

So discord is taking IRC place for a lot of communities including 22chan, what do you think about it? Have you made the jump yourself yet?
For me I find it annoying that people with no knowledge of /t/ are more and more using Discord, it became the norm to have a discord account. I think it can evolve to the point of including business meetings and the such and this made it almost a normie thing.
34 replies omitted. Click here to view.

 No.354[D][DF]

>>229
Personally, I use Discord to talk to people and have personal conversation or just random chats.
The website isn't exactly a chatting place.
The site is still more entertaining but Discord is still nice.

 No.355[D][DF]

>>353
IRC *is* good.

 No.356[D][DF]

its realy fun to troll trannies and niggers i got like 20+ disabled accounts in total


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 No.303[Reply][D]

What is the coolest or "coolest" early 2000s tech you remember?
1 reply omitted. Click here to view.

 No.305[D][DF]

>>303
A fucking headphone jack.

 No.306[D][DF]

the iphone was mid to late 2000's not early

 No.307[D][DF]

>>303
I wish there was a N-Gage emulator.


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 No.2[Reply][D]

Which one do you use and why ?
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 No.274[D][DF]

I use Void but I dislike how it lacks some stuff in repo and I'm too stupid to make my own templates.

 No.277[D][DF]

>>274
Also Void Linux doesn't even have a forum, it only has a subreddit.

 No.299[D][DF]

>>273
I'm back, it was gay.


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 No.259[Reply][D]

Have you ever heard of the distributed internet? The idea being that instead of having to rely on a server you share content with other users directly.
Torrents are the most famous example of this. However what if a distributed structure was used not only to share anime and cracked games but also to provide actual websites? Like another internet. What if there could be an internet without servers?
Here are some of the projects related to this I've seen around:
>Ipfs: https://ipfs.io/
Slightly improved torrents really. Removes duplicate files in the network. Has ipns, which allows to have a constant link to mutable content -> we can already have static web pages with this
>zeronet: https://zeronet.io/
Peer to peer, allows you to have mutable content as ipfs, but also supports having sites updating real-time. But most importantly it allows you to have websites where other people than the site owner can post content, which means you can have sites such as youtube, forums, imageboards, twitter (hopefully not. Jk they already have a thing similar to it). All without servers. Noice. It also has tor integration.
>freenet: https://freenetproject.org/
Again peer to peer, allows for websites and for user-content sites too (it says it has forums). Citing them:
>Communications by Freenet nodes are encrypted and are routed through other nodes to make it extremely difficult to determine who is requesting the information and what its content is.
Also has some functionality to hide that you are using freenet called "darknet". Seems similar to zeronet except more concerned with security and anonymity
1 reply omitted. Click here to view.

 No.263[D][DF]

Yup
I think it was a honeypot, or it just was a shitty, buggy clone
The media did go nuts though so it wasn't that secret

 No.265[D][DF]

>>262
> some people make a clone on some p2p network
Really? I didn't know about that. I mean about it being distributed
> And a bunch of people hosted cp and stuff Like that unknowingly because of that.
That sucks. But I'm sure you can make moderated p2p networks, so I'd say it's the moderators fault. If someone posts cp on a normal ib it will be hosted there till a mod removes it. Same on p2p

 No.297[D][DF]

>muhhhh decdntrlaization

fuckoff with this shit. It never fucking works, its communism for content.


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 No.100[Reply][D]

Is SoloLearn a good resource for learning programming languages?
3 replies (and 1 image reply) omitted. Click here to view.

 No.251[D][DF]

Get a book,way to go

 No.253[D][DF]

When it comes down to learning C or C++, what books would you guys reccomend?

 No.295[D][DF]

>>249
You are enlightened, based and absolutely redpilled


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 No.257[Reply][D]

I have an IBM eServer xSeries 345. It's been gathering dust in the basement for awhile now and I'd like to turn it into a data storage server running linux.

However, the drives are only 18GB each. Are there terabyte-sized drives compatible with a system this old (made around 2001) that I can buy for a reasonable price? If so, what would make a drive compatible? Anything besides the connector?

 No.258[D][DF]

>FF298


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 No.203[Reply][D]

lets find out
6 replies omitted. Click here to view.

 No.210[D][DF]

were gonna have to be very precise about out calculations

 No.211[D][DF]

Also depends how close you are to a black hole.
Also, the mass of the planet.
Large planet, longer day. sometimes
Earth time = 24hr.
Also how fast does the planet spin.
How close is it to the sun.
Moar questions
Minor answers
I'll try to explain.( i got some of the math from my ham radio textbook.) If I shine a flashlight in front of me, I will measure the beam to travel at about 300,000 km/s, which is also known as the speed of light. (Fun fact electromagnet waves "radio waves travel at the speed of light.)
And if you are moving at 200,000 km/s faster than me, and shine a flashlight ahead of you, I will see the light from your flashlight moving at the 300,000km/s. It will appear to me, as though the light from your flashlight is moving away from you at 100,000 km/s.
But when you will measure the speed of that light, relative to you, you’d think it’d be moving at 100,000 km/s as well, but instead from your perspective it will ALSO clock in at 300,000 km/s. What time it is depends upon your vantage point, and so there is no single absolute time.
Finally, because of relativity, each point in the Universe experiences time at a slightly different rate. For example, when we observe the cosmic microwave background, we find that we are moving at a speed of about 630 km/s relative to the background. That means we experience time a bit more slowly that something at rest relative to the cosmic background. it’s just a tiny bit slower, but added over the entire age of the Universe, our cosmic clock is 30,000 years behind the times.
Thats all i got. I used to have a couple good quantum mechanics books about this but sadly they were destroyed.
I guess some other of the stats are online too

 No.212[D][DF]

Unification theory says there is only one thing.
We used to think there were 4 fundamental forces, but we found out they were all the same thing. Strong em force, weak em force, electromagnetism, and gravity are all the same thing. We know that gravity is the same as time. High mass objects warp space time, which both generates gravitational forces (space) and changes the rate at which time flows relative to the rest of the universe (time). But the fact of the matter is that gravity is a myth. Objects warp time around them. Matter is sucked from areas with a high rate of time to areas with a low rate of time. It's all one thing. There is only time, and ripples in time.
But Einstein was Jewish, so I take all this with a grain of salt.


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 No.121[Reply][D]

https://cancel.fm/ripcord/
I found this project recently. It's and alternate client for Discord (and slack) and although not open source you could probably trust it more than ((((discord)))). It still seems to be in beta though, there are some unimplemented features and logging in is finnecky. But once you get it working it's great for power users.
7 replies (and 2 image replies) omitted. Click here to view.

 No.157[D][DF]

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$30!!!!????
I'd rather just not.

 No.158[D][DF]

>>157
based penny pincher. Keep a tight hold on your shekels, boys. Money isn't everything, but that's no reason to throw it away.

 No.189[D][DF]

>>121
just use irc


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 No.16[Reply][D]

Will earth ever recover from this disaster? I heard it's pretty much irreversible at this point.
pic not related
4 replies omitted. Click here to view.

 No.168[D][DF]

>>167
Honestly, I could care less if I ever stepped a foot outside being part of this damn natural planet ever again. I'd much rather live out my days part of a space colony with controlled climates and living in an artificial space about the size of an average home for the rest of my life. Fuck the world, fuck people, and fuck the weather. I just want to be comfy in my living space watching anime, playing vidya, and pleasuring myself.

 No.169[D][DF]

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>>168
Me too bro. To become a cosmic hikkikomori would be to attain the highest form of existence.

 No.170[D][DF]

>>16
Ironically the current Amazon rain forest fires are adding up to the brown markings on this graph for South America. Mass refugees into North America when?


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 No.136[Reply][D]

https://voidlinux.org/
>Void is a general purpose operating system, based on the monolithic Linux® kernel. Its package system allows you to quickly install, update and remove software; software is provided in binary packages or can be built directly from sources with the help of the XBPS source packages collection.
https://wiki.voidlinux.org/
https://github.com/void-linux

I am using Void Linux myself, very fast on my old desktop and everything is easy to set up
1 reply omitted. Click here to view.

 No.147[D][DF]

>>136
Never heard of it. Could you point out the advantages it has over other distros? What makes it unique? There are hundreds of distros already after all

 No.159[D][DF]

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>>147
>it's not a fork
>it's lightweight
>it uses the fastest init scheme, runit
>it has good and fast package manager called xbps ("X Binary Package System")
>it's easy to create packages for Void Linux. also, xbps-src makes it easy to build packages from source.
>it's rolling-release but it doesn't break. and it still supports downgrades and partial upgrades (unlike Arch, for example)
>Void Linux also ships musl-based version in addition to glibc-based distro. musl is more lightweight and less bloated libc (but you probably still want to use glibc for desktop/laptop systems, though)
>it uses LibreSSL (it was the first Linux distro to switch to it, in fact)
Also, ProTip: if you want to have a GUI environment after installation, you must select the CD disc/USB stick as the installation source when the installer asks for it. You can get Void Linux here -> https://voidlinux.org/

 No.160[D][DF]

>>159
If you choose to use the installer .iso to install a GUI, you must run sudo xbps-install -Su to install updates after installation. If you set Network as the installation source, you can easily install a GUI after installation by running:
sudo xbps-install -S xorg xfce4 linux-firmware wifi-firmware bash-completion
The -S option causes xbps to first sync the list of available packages and the -u option performs an upgrade.
If you want to also have a graphical login screen, follow these instruction: https://wiki.voidlinux.org/Post_Installation#Display_Manager
If you need proprietary software or microcode for your Intel CPU, you must first enable the non-free repository, like so:
sudo xbps-install void-repo-nonfree
and then install the microcode and everything else you need:
sudo xbps-install -S intel-ucode dwarffortress
and finally, regenerate the initramfs and update grub:
sudo xbps-reconfigure -f linux4.19 #replace the version number with the version that you have installed


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