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Archived threads in /sci/ - Science & Math - 97. page
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To what organ are red eyes associated with, i know red eyes come from dilated blood vessels and shit but what connection does it have with the internal organs. Example is how alcohol leaves those little red veins on your cheeks after a heavy night of drinking. That's associated with the liver.
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>>8443816
Anon, eyes are a sensory organ.
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>>8443817
ik but there has to be more
>>
>>8443816

Depending on the cause, a combination of the lymphatic (Immuno-response/spleen), and the circulatory system.

> "Since 1989, the Walk [to end Alzheimer's] has raised more than \$492 million for Alzheimer care, support and research."

So where is the money for neurodegenerative research going, and how close are we to a cure?
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>>8443129
It's going to Hillary's foundation.
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>>8443129
>where is the money for neurodegenerative research going
>how close are we to a cure?
Unfortunately, not very.
>>
In Alzheimer's theres a longer period of slow and difficult-to-measure decline, followed by a sharp dropoff of sudden decline. Research and drug development has stupidly chosen to focus on the later-stage sharp dropoff because the differences are easier to measure.

It's too late in the game at that point. What we need before we can do anything is efficient pickup of biomarkers so we can focus on the earlier stages.

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With the robotics book (>>8418462) we're at the end of the chapter, facing the first set of exercises. They are on probability theory and I'm gonna make a photo of the first 2.

Though as a recap, despite notable effort of moderation, going slow and low, and a topic that borders many fields, the participation is extremely low (2 people read the link to the strawpoll at the end of the last thread and voted). It was the same when I tried reading Landau and in the intro to logic.
You guys of /sci/, is there any subject or book that could potentially catch on, so that at least 7 or so anons would participate and discuss and do some calculations/coding/tasks? Like at the scale of a 3h/week private investment.

Anyway, the robotics book is here
https://docs.ufpr.br/~danielsantos/ProbabilisticRobotics.pdf
and another anon and me implemented the discrete example stated in the middle of the first chapter as a Terminal game in Python resp. Ada. I discussed them in
https://youtu.be/soDGH43ALaI
https://youtu.be/7EeuMyRECPU
Let me know if there is an idea for some sort of boost
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$bel_{\mathrm out}[bel_{\mathrm in}](x) := N^*W_z(x)\int_A K_u(x,x')\,bel_{\mathrm in}(x'){\mathrm d}$
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p(x|y)
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What does /sci/ think of Vi Hart?
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I want to have sex with her on a bed of balloons
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Looks like a slut
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she fell for the modern feminism meme

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What are some /sci/ approved trades?
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>>8449909
>>
Brainlet memes
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>I thought secondary education was a scam, have no thirst for knowledge and thus survive on weed and repairing car engines with the occasional assistance of my parents

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Is studying too much actually bad for you, or is it just a meme?
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>>8454180
Only if you don't get enough exercise.
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>>8454192
This. As long as your body produces enough BDNF via exercise, it will strengthen your neurons despite their strain from studying. But stress AKA cortisol is disintegrative to neurons and sleep deprivation is horrible for the brain
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>>8454180
It's good heuristic advice to diversify your activities. If you really like studying and you want to learn a lot, then go for it. But you should not let other important parts of your life (health, relationships, career, etc.) go by the wayside. And for your sanity, it is probably a good idea to have a hobby or two that is relatively mindless.

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CHINAAAAA!!!!
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>>8452849
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>>8452852
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>>8452855
Team behind the CZ-5 space rocket

These are the 1980s-1990s born generations which have no college debt and love to buy smart phones and DJI drones, dubbed as "little emperors" by western mainstream corporate media and said to be incompetent, scientific frauds and a reason for China's downfall.

Where is that collapse now, western faggots? Where is it?

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What the fuck is a limit and how does it relate to diffrentiating here?
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>>8454181
apply that limit to any equation you can derive. Than derive the equation.
Now fuck off back to high school
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How is highschool going for you, brainlet?
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>>8454181
Why are you asking? Self study? You should learn to be comfortable with limits first before learning differentiation at all.

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Discussion.
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>we control tigers by being smarter
discuss.
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We should build an AI on 4chan that scans some keywords from a thread/post and then generates a convincing reply based on previously mined data. All its posts would also include an image of a certain theme (like foreign pop artists) so that people would know what posts are its.
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>>8444872
>>8444880
Not too sure about that tiger one either. I mean, intelligence with a mild amount of brute force keeps them at bay now, so I can accept that argument to a point, but most animals that we rendered our bitches, we did so through brute force, by either outnumbering them like mammoth, or actual physical strength, with a small use of intelligence.
Then you have cases like tigers eating babies in villages in India, only to be subdued through the use of weapons...

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Just one of those
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>>8442914
How do I solve for currents here? All resistors with the exception of the middle one are 2 ohm.
The center and right voltage source are 6 V while the left one is 3 V. I tried using Kirchhoff but to no avail, my system had multiple solutions. I probably screwed something up.
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>>8442923
Use superposition. Also there's an /sqt/ up for just this reason.

Polite sage
>>
>Doing thermodynamics problems
>One of the questions reads "A building is heated to 27 degrees C. How much heat per second could be supplied by an electric heater, with power input 20 kW?"
I'm tempted to just say 20kJ, but I'm awfully afraid that it's more complicated than that. I'm not looking for an answer, I'd just like to know whether or not it's as simple as it seems.

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how far are we from achieving machine learning? is it even possible?

also will we ever have the ability to significantly enhance our own intelligence?
>>

They are pretty dumb still, but they are learning.

I think intellegence enhancement is possible, especially once we get serious about genetic modification, or are willing to abandon biological brains entirely.
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>>8452920

What are you talking about? Machine learning has existed since the 70s.
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Here is a video of an AI learning how to walk, and it's pretty funny to watch

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How would you find the area of the shaded space above the axis but below the curve?
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>>8449173
Lmao
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>>8449173
Are you in elementary school OP?
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Integrals.

http://wolframalpha.com/input/?i=int+-x%5E2+%2B+4%2C+x%3D-2+to+2&x=0&y=0

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What do you take to boost your math skills, /sci/?
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My mind
>>
Classes
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>>8453822
>>8453821
Boring.

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>Literally wrong about everything so far in 2016

Has this fraud been exposed? Is statistics even real science?
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>>8452501
Lmao he just got blown out for the final time by Bryant and the boys. The goat is dead and this hack is too (on the inside)

Fuck Nate Silver
>>
He was a statistician who let the fame get to his head.
He tried being a pundit and ended up committing the cardinal sin of statistics (ecological fallacy) because he forgot this fundamental principle:

Knowing the long-run average (e.g., probability of a coin showing heads when flipped) does not enable you to wantonly call individual predictions (probability of individual coin flips).

Probability is not gambling.
Descriptive statistics is not inferential statistics.
Causation is not correlation.
Time series analysis is not forecasting.

Leave...
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>>8452501
fuck this guy

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>There are people on /sci/ RIGHT NOW who think that SpaceX can build this in 6 years
How do we stop the gradual infiltration of "pop space" into /sci/, /sci/?
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>>8449663
>>
>there will be dildo replicas
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>>8449675
nope and nope

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What happens after death? What is the consensus in the scientific community?
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>>8436960
conciousness ceases as if you were going to sleep but forever.
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>>8436965
>Science is my religion.
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>>8436965
It's more like how you felt before you were born. Lots of things happen when you sleep such as dreams and sudden feelings of chemicals being released from your body, so I wouldn't say it's like sleeping.

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I keep hearing on this website that the average female has 20 partners before she hits 25.

nobody has been able to give me a source, but I want to know what's the real average in the real world.

also, how many girls are virgins at 20?
>>
How is this interesting?
>>
>>8451471
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>>8451472
I want to be able to know the truth and not relly on some bias r9k meme.

>mathlab
>>
>>8450284
You archived a post for this
>>
>engineers
>>
I wish other high-level languages could do stuff with arrays like MATLAB does. I mean fuck,
>array[0:10]++
Vs.
>for(int I=0;I<10;I++){
>array[I]++;
}

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Is life extension and biological immortality just memes, or can they actually be achieved within this century?
>>
>>
>>8437698
Yes, with nanotech i believe. At molecule level.
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>>8437698
Possibly, if we use nano machines to repair damaged tissue and use moderate amounts of gene therapy on ourselves.

That being said I believe there are other ways to achieve immortality.

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Can anyone explain to me why topology exists? Is it just an exercise in autism, or is there some benefit to discovering how a non-existant material behaves?
>>
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With topolocgics, you can calgualate all nugular scients with no difficul. All you have to remember is, that when x is 3, answer is equals not really. For example -3^x~d != pi+5.

Allow me to explain:

Three.
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>>8447637
this is what a topology phd sounds like

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How does one become ''sharp''?

Whenever I try to study I either feel sleepy, lethargic and ''absent''. Actually, most times I just feel absent, as If I wasn't really here and I was trapped in a permanent cycle of passiveness.

You might say it is because I am not really interested on the things that I study, but I deeply am, its just as if my brain wasn't giving me as much as I wish it would.

Whats wrong sci? I just don't want to be a brainlet anymore.
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>>8439653
Studying is hard. Just gotta keep at it.

You can do some things to keep yourself from losing focus, like getting proper sleep, eating right, exercising. Also, it doesn't hurt to take breaks.

Apart from that, just be sure you want to be doing what you're doing, keep focused on your goal, and work at it. Sorry I don't have any other advice.
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>>8439653

Coffee?

Find something you're interested in
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>>8439659

No need to be sorry, its great advice.

>>8439675

no

>coffee

>find something you're interested in

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How do we stop obesity epidemic once and for all?
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>>8436012
by banning food
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>>8436012
Find a market use and cheap easy extraction method for human lipids.
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>>8436013

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How soon can we make sexbots that look, feel, smell and sound at least 90% authentic? How soon can we make them do all the household chores, clean themselves, keep a light conversation etc?

>The next generation of dolls are likely to be hyper realistic with features never seen before.

>They will have built-in heaters which so they have genuine body warmth and sensors that can react to touch.

>RealDoll is made by Abyss Creations, a company based in California.

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>>8449373
> fully functional genitalia
no thx.
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>>8449373
50 years at minimum
>>
Banned in the uk when?

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How does /sci/ solve climate change?
>>
Remove elected officials who deny climate change.

Make financial incentives for companies to pour research into renewable energy.

Massive carbon tax.

It's either that, or the Earth, and all life on it is permanently destroyed. We only have 20 years left before it's irreversible, and we are on the trajectory to permanent extinction.
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>>8449015
Celebrity endorsements and maybe a McDonalds' happy meal toy. We can call it "Globey the Globe."
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>>8449031

not a bad idea, but this film probably has some good ideas too

What does /sci/ think of him after that documentary. Is he now /ourguy/?

>>
>>8450978
>/sci/s guy is not a scientist
is this a troll thread ?
>>
seems perfect for the cultists on /sci/
>>
>>8450978
I bet this guy doesn't really practice what he preaches.
No skin in the game.

>in engineering physics class
>"I'm going into mechanical engineering, why do I need to know this?"
>>
>>8449199
they're just the people who are gonna drop out anon.

I'm in senior year, math with engineering minor. no one asks why they're here at this level. all the brainlets either studied so hard they could be competent or they dropped out of the program entirely.
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>>8449199
I could understand asking this in CE, but mechanical engineering? Fucking why?
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>>8449281

>studied so hard they could be competent

This is me. Knowing I'm a brainlet makes me study 10x as hard. I have straight A's, great GPA (not sure what it is off the top of my head) just about to finish up sophomore year. I came in a complete brainlet from HS with a 2.5 GPA. Given time people either shape up or drop.

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What calculator does /sci/ use?

I have a TI 30XIIS, but the buttons on it are horrible.
>>
Ah, the good old days...

I rarely get to use a calculator anymore. When I do it's either a TI 36X or TI-NSpire CAS.
>>
TI-30XA
it could use a few more functions, but the buttons are pretty nice
>>
I use PARI/gp on my phone and computer. Great number theory support.

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How are the probability calculations for the american presidential election made?

It obviously cannot be calculated theoretically and it also cannot be calculated experimentally (i think), because it's a single experiment that has never happened and that will never happen again.

I'm a Statistics undergrad and i'm reaasonably fascinated about how these probabilities are calculated.
>>
http://fivethirtyeight.com/features/a-users-guide-to-fivethirtyeights-2016-general-election-forecast/

That lists the factors which are used and the general principles of how they're used, but not the specifics.
>>
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>>8440953
>>
>>8440953
>It obviously cannot be calculated theoretically

I hope your first semester at college is going well. It's good that you're asking questions, man. You will be much better off when you realize it's actually quicker and more reliable to research these things than ask them on 4chan.

I'm teasing you about your first semester because holy shit man, obviously it's calculated 'theoretically'.

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Why does /sci/ hate Computer Science? It's probably one of the most sought-after degrees in the STEM-field. From my experience, you base the hate on the people, not the actual content.
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>>8447606
this
die in a fire OP
>>
>>8447605
>you base the hate on the people, not the actual content.
Indeed.

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Is the image correct?

Is it true the F-35 is superior to the PAK-FA simply because of its ridiculously powerful radar and jamming ability?

>inb4 but PAK-FA maneuverability
Doesn't mean anything if the enemy can kill you before you see him.
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>>8447677
>>
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>>8447685
>>
>>8447686

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