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Archived threads in /sci/ - Science & Math - 1570. page

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What's the expectation abd variable of the stochstic process giveb by

[math] dX_t = (X_t \, (1-X_t))^r \, dW_t [/math]

?

I'm mostly interested in r equals 1/2 or 1.
22 posts and 9 images submitted.
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I could add that it came up in modeling a distribution that can't take values outside of [0,1]. For r=1/2 it's a variation of the stochastic term in the "CIR model" and respecta the bounds I want
>>
bump
>>
senpaitachi

Brainlet here, how do I solve this? It kinda looks like Euler's identity
29 posts and 1 images submitted.
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>>8171839
>implying there is something to solve
>>
>>8171839
It's divergent
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>>8171848
We talked about euler's identuty in class and our professor gave us that infinite expression to solve.

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It's just salt you guys. It also points to there being hydrothermal activity.

>The brightest area on Ceres, located in the mysterious Occator Crater, has the highest concentration of carbonate minerals ever seen outside Earth,
...
>This material appears to have come from inside Ceres, because an impacting asteroid could not have delivered it. The upwelling of this material suggests that temperatures inside Ceres are warmer than previously believed. Impact of an asteroid on Ceres may have helped bring this material up from below, but researchers think an internal process played a role as well.


http://www.nasa.gov/feature/jpl/recent-hydrothermal-activity-may-explain-ceres-brightest-area
31 posts and 1 images submitted.
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yeah, old news...
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>>8171786
>t. NASA
Wake up sheeple!
>>
>>8171786
>It's just salt you guys
yes
what else?
only meming retards said it was aliens

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I just need some help, I want to know what each of the skeletal chemical structures of the 4 basic elements of life look like. (oxygen, carbon, hydrogen, nitrogen) I'm designing a tattoo for myself and would like to include those. I don't know if there is a certain structure to them or if they can be made in different ways, but any help would be greatly appreciated. Here's a picture of what I'm talking about. Thanks in advance.
22 posts and 5 images submitted.
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>>8171577
first thing is to google that shit

second, molview.org
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>>8171579
Tried google, couldn't tell if what I was finding was actually right. I'm getting these tattooed on me for life. Not gunna solely trust google, thanks.
>>
>>8171579
Also, I have no idea how to use molview

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I have a hypothetical physics problem for you /Sci/. Been mulling it over for reasons and want to confirm or debunk my conclusion.

Assume a stable Ringworld with a radius of 1 AU situated around a star, rotating at a speed sufficient to create 1g of acceleration on its inner surface. Now, assume that the Ringworld is instantly and cleanly severed at one point along its circumference.

What is the outcome? What would you see and feel if you were standing on its surface? Could civilization survive for dozens of years on the far side of the ring while the effect travels along the vast circumference of the structure?
16 posts and 4 images submitted.
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>>8171511
>> assume a stable ringworld
THE RINGWORLD IS UNSTABLE!
>>
That's a bad science fiction author, try Greg Egan.
>>
>>8171511
>What is the outcome?
The Ring would probably tear itself to pieces.

>What would you see and feel if you were standing on its surface?
Probably be able to see the breakage from much of the ring. There would probably be hurricane force winds towards the part that ruptured.

> Could civilization survive for dozens of years on the far side of the ring while the effect travels along the vast circumference of the structure?
Not in the least. You're actually overestimating the scale of the ring here. Ringworld is spinning at an absurd rate and does a complete revolution in just over a week. You'd have a couple days at most before your part of the ring fell to pieces.

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Everytime I talk to people I always end up giving my opinion on something and calificate subtly theirs as inferior. I end up explaining (if I can) how my POV works. Even though they started talking to me about their problems and lives.
It seems to be a problem.

How do I improve my personality scientifically?
Do you guys have a method?
Implying psychology is a science, of course.
15 posts and 2 images submitted.
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>>8171341
Drink milk to remove your status effects.
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>>8171343
Is there a psychological concept of my problem?
So I can start to look from that point.
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>>8171341
>Implying psychology is a science, of course.
Implying Meyers-Briggs personality theory isn't the equal of Abel's proof that there exist no general algebraic solutions to polynomials of degree 5 or higher.

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Redpill me on archaeocetes.
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>>8170930
>Redpill me
GTFO
>>
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>>8170930
>>
>>8170930
>redpill
You don't deserve shit.

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So im trying to run a jar file on a new raspberry pi (with little experience) and i entered the following:

pi@raspberrypi:~ $ java -jar /home/pi/Documents/Java Projects/test.jar

Error: Unable to access jarfile /home/pi/Documents/Java

Its obvious the problem is the space in the folder's name. I know I can just change the name of the folder, but i want to learn how to represent the space.

Also general raspberry pi thread...
24 posts and 2 images submitted.
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>>8170520
Programming != computer science you massive faggot

The board you are looking for is >>>/g/
>>
now do you understand why you dont put spaces in filenames????

ok, now:

java -jar /home/pi/Documents/Java Projects/test.jar

and now:

>>>/g/55298588
>>
>>8170529
oops:

java -jar "/home/pi/Documents/Java Projects/test.jar"

Does information move faster than the speed of light?
41 posts and 4 images submitted.
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>>8169782
only when my dick is transmitting information to your mom
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>>8169787
Ooooooooooioioooooh
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>>8169782
How much its one information?
More than two lights?

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Is it a possible that efficient, controllable fusion for the purposes of power on a small scale (less than anything around the size of a star) is simply not a scientific possibility? Or is there evidence that it can be done but we just can't find the means?
18 posts and 3 images submitted.
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We should skip the fusion meme and start pursuing antimatter IMO.
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>>8169586
Antimatter isn't a "real" fuel source; it's more like a battery. Only negligible amounts occur in nature, enough to actually do anything with would have to be produced artificially, which consumes more power than you'd get out of the antimatter.
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Why not pursue miniature fission? Could a couple milligram size ball of Pu-239 perhaps be compressed enough to go critical with lasers?

Boom. The future is miniaturized internal nuclear detonation engines.

Serious Question, Why hasn't a dick enlargement pill been invented? You would think with how much interest there is in the subject and how much money the creator would make that there would be a lot of money being pumped into it.
46 posts and 3 images submitted.
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>>8168926
how about a vagina tightener pill?
back to tumblr your traitor.
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>>8168926
Why isn't there foreskin restoration? Because it's hard.
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>>8168926
No but there are surgeries that take fat from your stomach and put it in your penis.
Its a new trend is south korea and makes great results.

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How did you guys teach yourself LaTeX?
31 posts and 1 images submitted.
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>>8168693
essentially, yes
just doing it a lot
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>>8168693
you don't learn latex. you just start typing stuff and google what you need to know.
>>
>>8168702
This. Like all software. Though I would say that this IS learning, it's just different than other types of learning.

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Hello /sci/! I am working on a research paper regarding creativity an artists compared to scientists for uni. Would anyone care to answer these questions? Much obliged for your insight! :)

Who in your life has inspired you & why?

What advice would you give others to become more creative?

How important is education to creativity?

How do you deal with creative blocks?

When did you first become creative?

Do you have a specific creative process you need to go through? How did you develop that process?
19 posts and 2 images submitted.
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>>8167489
>Who in your life has inspired you & why?
Nyx, because she's best pony
>What advice would you give others to become more creative?
Watch more cartoons, like anime.
>How important is education to creativity?
Very.
>How do you deal with creative blocks?
I watch lots of anime.
>When did you first become creative?
After I learned about Japan and anime from anime.
>Do you have a specific creative process you need to go through?
Yes.
>How did you develop that process?
Well, since I'm an engineer, I often have very hard home assignments to solve, like triple integrals, so naturally, over time, I developed this process, where I'd start on the problem, working as hard as I could, until I saw no more paths of attack, then I'd take a break, watch some anime or MLP, maybe jack off a bit (traps are based), and then I'd go back at it with new fervor and ideas this time.
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>>8167489
>Who in your life has inspired you & why?
Nobody,I have obsessive personality traits that moved my interest form one field to the next only to end up in a specific one.

>What advice would you give others to become more creative?
Have your bills paid and have people around that that really love you.
I cant stress this enough.

>How important is education to creativity?
Education only goes so far so is creativity.
Both must be done side by side

>How do you deal with creative blocks?
I go and do something else for a while

>When did you first become creative?
~22

>Do you have a specific creative process you need to go through? How did you develop that process?
I dont want to answer this
>>
Who in your life has inspired you & why?

>Dj Qbert - hes a strong believer that creativity is something everyone can tap into.

What advice would you give others to become more creative?

>Dont be closed minded and quick to judge.

How important is education to creativity?

>Very, the amount of ideas i produce closely correlate with mathematics, The more i practice the easier it is for me to come up with a new concept.

How do you deal with creative blocks?

>Ill take a break and do something unrelated.The break in repetition helps.

When did you first become creative?

>My mother is an artist, so ive always have been comfortable being creative.

Do you have a specific creative process you need to go through? How did you develop that process?

>I write graffiti, so usually the rush gets me going, but i believe the adrenaline helps. Theres something about the freedom of a big surface that im attracted to and continue despite consequences.
>Pic related

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Tell me the truth about SSRI's /sci/
49 posts and 6 images submitted.
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>>8165967
They saved me from suicide.
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>>8165977
>They saved me from suicide.

How fat did you got ?
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>>8165983
I gained some weight (approx. 7kg over the course of 1 year) finally getting me out of skeleton mode and becoming normal weight.

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>people who don't enjoy studying science & mathematics

You depress me by how you don't see the beauty in the knowledge we've accrued, that is readily available to you to learn and eventually contribute to, and how that would be motivation enough to make it worth putting the majority of your time and effort towards, yet you do not.

As a famous nigger would say, I pity the fool.
41 posts and 4 images submitted.
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>>8164798
Yes, this is simply win. I too do not understand why people do not wish to understand how the world around them functions.
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>>8165736
>I too do not understand why people do not wish to understand how the world around them functions.

I'm a mathematician and I really don't care about how the world functions from a physics or chemistry perspective. I care more about politics or economics than "understanding the universe" and I don't care too much about economics or politics.

Pic sort of related though.
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>>8165743
>I'm a mathematician
Painfully obvious from your spergy post.

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