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Archived threads in /sci/ - Science & Math - 1528. page

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Hello Sci. I'm looking for someone to peer check my work. I am a researcher that is working on understanding leydig cell function.

Serum testosterone was measured in a group of male chimpanzees of varying ages by radioimmunoassay using a specific antiserum to testosterone-3-carboxym ethyloxime-bovine serum albumin. The juvenile age group, ranging from one through six years (n=26), had a mean serum testosterone value of 13ng/100ml (range 3.5-59ng/100ml). The adolescent age group, spanning years seven through ten (n=19), had a mean value of 178ng/100ml (range 14.6-238ng/100ml). The adult group, comprised of animals over eleven years of age (n=29), had a mean peripheral serum testosterone value of 397ng/100ml (range 92-680ng/100ml). These data suggest that serum testosterone levels may be useful in determing the age and sexual maturity of chimpanzees of unknown age.

Here i'm looking at 397ng/100ml adult chimps and comparing it to average 30 year old human test. levels which are 500 ng/dL.

Is 500 ng/dl the same as 5 ng / 100 ml? so it is therefore correct to say male chimpanzees have more than 300x as much testosterone as human males on average?
15 posts and 1 images submitted.
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>>8212494
Are you fucking serious? Go to a place that at least has a semblance of knowledge to get peer reviewed.

Coming to fucking /sci/ kek nice joke bra
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>>8212515
I was expecting a more.,mature response than that,here. . .
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>>8212523
that was a mistake

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When is it too late to get into mathematics and the sciences? I'm out of highschool (18, don't worry), and starting college in August. My strengths have always been History and English, and I'm a very strong writer. However, I'm very interested in the sciences, particularly biology, robotics, and space. I was never good at math in high school and I did decently in biology, chemistry, and physics. Is it too late for me to begin delving into the world of math & science? If not, where do I start?
15 posts and 1 images submitted.
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>>8212485
You should have been starting to get at least a basic understanding before high school
>>
>>8212485
>>8212502

Don't listen to this prick, do what makes you happy OP. If you enjoy the sciences go for it, you're still young. I learned those who love what they do easily surpass those who are only in it for the financial well being.
>>
>>8212485
It's never too late to learn anything OP. Try out Basic Mathematics by Serge Lang, I like his writing style.

Also refer to the /sci/ wikia.

14 posts and 3 images submitted.
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>>8212430
I know right

>mfw 95% of graduates can't even draw hands
>>
w-where is geology
>>
The fuck, why is biology and psych the only sciences up there?

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hey /sci/

I created a sort algorithm and am wondering if there are ways in math to prove if a specific algorithm is performed, that a list afterwards will have a specific property.

For my specific case let's say given a list (x_1, x_2,...,x_n) of un-ordered elements, I want to sort them into a new list of (y_1, y_2,...y_n) elements such that the new list has the property y_1 <= y_2 <= ... <= y_n.

The algorithm I used is this:
for (i=0;i<n-1;i++)
{
for (j=0;j<n-1;j++)
{
if (x_i <= x_i+1)
{
temporary = x_i
x_i = x_i+1
x_i+1 = temporary
}
}
}

Again, is there a way to directly prove like by induction or by cases that when an algorithm is performed a new set will have a specific property?
pic unrelated but lols
13 posts and 1 images submitted.
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>>8212192
The usual trick is to generalize the hypothesis so that it gives you a correct statement about the list at every step of your algorithm. Then do induction over the steps in the algorithm.
>>
>>8212211
Or to be more specific to this case, the hypothesis should be something like "at step i, this part of the list is sorted."
>>
OP, what you "created" is known as the bubble sort algorithm and it's the most basic one there is.
Although I'm also curious about proving the correctness of this algorithm.
Have you considered using Hare's logic to do it?
The book "Systematic Programming: An Introduction" by Niklaus Wirth may help you with that.

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What do I about my horrible stomach problems? I have bad diarrhea and nausea all day, and it honestly severely worsens my depression. I figured since most of the threads here are garbage anyway I might as well see if any medfags can help. Pic unrelated.
12 posts and 1 images submitted.
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>>8212079
If it only started today and you don't have a fever, then it will probably pass soon and you can only wait it out for now. Drink lots of water to stay hydrated, don't eat milk-products (encourage diarrhea) and try to stick to food that keeps your more constipated (bananas, bread, pasta, rice, etc.).

If you can recall anything bad you ate in the last 40 hours or so and may have caused this, you may want to dispose of any leftovers.
>>
You probably eat all the garbage in the middle of the supermarket. Stop eating anything but meat and vegetables you pleb.
>>
>>8212097
I've had this problem for like a year

Scientifically speaking, should gays be allowed to donate blood?

Would the extra supply of blood be worth the higher risk of STDs?
29 posts and 2 images submitted.
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>>8211974
>2016
>not knowing that blood testing exists
>>
>>8211983
this
not allowing gays to donate blood because of >muh STDs implies they don't test their blood
untested hetero blood seems more concerning to me than certified clean niggerfaggot blood
>>
>>8211974
Receiving transfused blood when you have a circulatory collapse or are experiencing exsanguination is a life-saving treatment, as in

>If you don't get this treatment you will die from this condition 100%

AIDS has a survival rate of greater than 0% and although crippling and expensive, its better than being dead, no?

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I hate to make a thread but this is really really troubling me. I'm a Sophomore and I am meeting with the advisor tomorrow to choose my major. This whole time I have been doing CS/Math classes and I still just can't decide which to declare as my major.

I thought I knew but after months of reading CS hate here and the fact that I am extremely interested in crypto I am totally up in the air. I want to do a programming type job, but my personal interests are mostly the more mathematical side of things.

But I am extremely worried about if I get a Mathematics degree of my resume getting filtered out for not having a CS degree, and going into interviews/jobs unprepared to do the software engineer- sort of stuff.

I knew exactly what I wanted and then you all ruined it for me with your elegant talk of 300k starting and any job I want.

I am going to be up all night going back and forth, help me decide /sci/ I can't do both..
17 posts and 4 images submitted.
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go into CS, you obviously like it better and liking math can help you be good with your CS degree.
don't let memes decide on what you wanna do for most of your life.
>>
>math PhD
>300k starting
>any job i want
>>
what is that stereogram, it doesnt look like shit

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What is the universe expanding into? What is on the other side of the expansion?
31 posts and 2 images submitted.
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nothing, nothing
>>
The universe isn't expanding INTO anything, its infinite.

There isn't any other side.
>>
>>8211930
Wut

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Puzzlessss
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>>8211888
>>
lit buld has insignificantly more mass but significantly less weight
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>>8211899
if by weight then is the heated one

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What are some "middle of the road" scientific news sites that aren't completely layman but also go into depth somewhat. I'd like to try and stay current on scientific progression.
15 posts and 2 images submitted.
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Just read Science and Nature. They're really not rocket science.
>>
>>8211739
This?

http://www.scienceandnature.org/
>>
>>8211731
Scientific American.

Whats your opinion on college educaton, and should it play such a huge role in seeking financial security in life? Its just not for some people yet the people that decide to not attend usually end up getting labeled as fuck ups. (Personally fuck what someone else thinks, but I hate that people get labeled like this)
13 posts and 1 images submitted.
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>>8211694
College education, for the most part, is worthless. There's only a handful of majors that are worth it, and the fuck ups who do get their degrees in something with horrible job outlooks are the same people who label everyone without a college degree as a fuck up.
>>
>>8211694
College is generally a terrible return on investment. It's purpose is to get you a degree, which will supposedly get you a job, which will supposedly help pay off all the debt you accumulated from college. All the "passion for learning" stuff is bullshit.

The truth is that most degrees will not get you a job , which is a shame because people are being diverted away from other fields of knowledge in search for work

From what I can tell college is for STEM only, but even it is struggling in some regards. College is all about engineering, getting a degree for medical, hard sciences, trying to get a Phd (if you actually want to do that for some reason), and I'm sure there are a couple of other degrees that can secure you a decent job to get by

These days, trade schools and working your way up is a viable alt and being self-employed should be considered. Or go to some boot camp and become a code monkey
>>
>>8211772
>debt slaves

Unless you live in a civilized country where higher education is free

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For example, the positioning of Electrons varies depending on the observer, but why not, say, a plane? Why don't people disappear when they go to bed alone, or appear in a different location when they wake up and resume observing themselves?
12 posts and 1 images submitted.
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>>8211663
>but why not, say, a plane?
Interference between molecules has been experimentally confirmed. Why not test it with planes, by flying them through a slit between two tall buildings?
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>>8211670
>the realization
>>
>>8211670
Mel

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Please, Psychology fags, HELP ME. I have a big fucking problem.
So here it is. So Carl Jung said that all men and women are in a sense androgynous. And by that he meant that men and women have both male and female traits within them. In a man, the female traits lie latent and in a woman, the masculine traits lie latent. To the extent that a man or woman lets these traits lie unrealized, or not brought to the surface of consciousness, they are project upon the members of the opposite sex. And the more latent they are, they more powerful will be the force with which his psyche projects. So, apparently it is necessary for people to learn to be able to withdraw their projections, so that they are able to see the people upon whom they would otherwise project, for who they actually are. Also, by withdrawing the projections, the person integrates within themselves those qualities that are the strengths of the opposite sex.
My question is, how does one know where the projection ends and where the other person begins? I’ve been trying very hard of late to withdraw such anima projections, so that I don’t keep falling for the wrong kind of women over and over, but the consequence of this has been that now I have no idea whether I like the girl for who she is, or who I think she is. I have noticed that I suddenly don’t find too many women attractive at all, and I’m afraid I might be losing some part of me I hold very dear. It feels like it is dying.
Also, I want to know, isn’t all desire for women dependent upon a certain degree of projection? Will I eventually just lose all desire, whether it be for love or lust, if I keep trying to withdraw such projections? Or is it that the kind of women I will be attracted to form now on will be ones who are more mature in mind?
17 posts and 1 images submitted.
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>>8211603
No
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>>8211609

Maybe?
>>
I am genuinely upset that no one seems to know what the fuck i'm talking about

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Is robot uprising a real possibility in future?
10 posts and 1 images submitted.
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>>>/x/
>>
>>8211574
Yes.
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>>8211574
No

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Explain O(log n) to me
13 posts and 1 images submitted.
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Useless shit I'll never use in life since I'm not a math or CS major.
>>
>>8211428
that's fucking lazy of you
http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00sc-introduction-to-computer-science-and-programming-spring-2011/
>>
> CS major
> Not knowing what big O notation is
why are you even on /sci/ brainlet?

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