Personal genetics thread
Has anyone used one of the tests? I just got my 23andme results back and also ran them through dnaland. I wanted health results though, so I'm considering using promethease. Has anyone used it, did you find anything worthwhile?
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>>8158187
>mfw I finally get the title of the move Prometheus now
wew...
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>>8158187
>In 2013 the US Food and Drug Administration (FDA) ordered 23andMe to discontinue marketing its personal genome service (PGS) as the company had not obtained the legally required regulatory approval resulting in concerns about the potential consequences of customers receiving inaccurate health results.[3] The company continued to sell a personal genome test without health-related results in the United States until October 21, 2015, when it announced that it would be including a revised health component with FDA approval.[4][5] 23andMe has been selling a product with both ancestry and health-related components in Canada since October 2014,[6][7][8] and in the United Kingdom since December 2014.[9]
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>>8158236
what? the title isnt based on that database you jack ass, both the movie and the database are named after the God who created mankind and gave us fire.
Anonymous
How do I improve my long-term memory? 2016-06-22 13:24:28 Post No.8157807
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How do I improve my long-term memory? 2016-06-22 13:24:28 Post No.8157807
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How do I improve my long-term memory?
Anonymous
2016-06-22 13:24:28
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My short-term meory is quite strong (I am good at cramming), but my LTM is really shit. Are there proven methods on how to improve it?
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>>8157807
Pic related.
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>>8157807
There is no way of improving your memory. So forget about some mini games lumosity style. All you can do is utilize your minds potential. There are many mnemonic devices you can use that will help you if you use them right. I would also recomment looking into mind maps.
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Read the Christian bible and go to the temple.
How do you guys take notes in math? (or any subject).
I'm transitioning into a math major after taking a fair amount of math subjects but I have absolute trash tier notetaking. What are some good ways to lay out notes?
Do you write in caps like pic related?
Do you split the page vertically?
Do you use grid or lined paper?
Do you even take notes?
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My notes are a mess, but it just werks.
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depends. I'm one of those people who thinks notes are a personal thing and it is something that's supposed to help me better understand later. I don't think there's some universal truth or rule to note taking.
with that being said, there are various suggestions and tips on the internet.
I don't write in all caps.
at some point i started flipping my notebooks sideways so it has a visual feeling of a writing board. I get the feeling I have more space for writing. in those cases I do sometimes split the page vertically.
I use grid paper with 1x1cm squares. standard math notebook in my country.
I use a ballpoint pen, usually blue. pencil work wears out after a short time.
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>>8157656
use w/e paper and writing style you want. doesn't matter at all.
take notes in class
take notes from text
using your notes, re-write each section of each class in your own words
try practice problems
if you're stuck, refer to your re-write notes
if that doesn't work, go to a TA/Professor
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Okay, guys. Interesting physics question that I made up.
I don't know the solution yet. Consider the following situation. If you want, please submit anything that you want, but don't be idiots. Maybe anything arithmetic, too? Stuff you'd see in highschool textbooks, but problems you'd actually like to solve out.
Here's my problem:
VY Canis Maioris is a very large Hypergiant, and is one of the largest known stars. Pretend it exists a few light years away, and its relative velocity to our solar system is ~+20,000 meters/second initially. Because of the scale, assume that it doesn't matter that they're in angular motion around Sagittarius A*. Assuming that it's approaching the solar system at an angle of 3π/2 rads, assuming that the right hand position is 0 rads or 2π rads.
The solution to this problem is, "At what time will the pull of VY Canis Maioris over power the sun's gravitational pull on the Earth, and cause the Earth to orbit it instead?"
Easy mode: Assume the Earth is remaining still at this time, and for these purposes, it has ZERO rotational velocity; and everything in the solar system doesn't move either.
Normal mode: Assume the Earth has a constant orbital velocity. These will be in the givens below.
Hard Mode: Assume that all the planets start in the same position as well. When will THEY ALL begin to orbit VY CM?
Pretty damn hard mode: Now, factor in the angular movement of them. They are the same as their linear movement.
Note: there are other factors that might affect this like solar wind and shit. You can discount all of it.
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>>8156926
Constants/info:
(Law of universal gravitation)
F=(G*m1*m2)/r^2
(Gravitational constant)
G=6.674e-11 nm^2/kg^2
Mass of the Sun: 1.989E+30 Kg
Mass of the earth: 5.92E+24 Kg
Mass of VY Canis Maioris: ~5.96E+31 Kg
Earth's mean distance: 149,597,870,700 meters (1.5E+11 m)
Velocity of Sun: 220,000 m/s (Relative, zero.)
Velocity of VY Canis Maioris: 420,000 m/s. (Relative, 200,000 m/s)
The velocity of Earth: 460 m/s.
Approach angle of VY Canis Maioris: 3π/2 (270°)
θ1 of the Earth: also 3π/2
Mars' v:2.41e+4 m/s
Mars' Mass: 6.42+e23 kg
Mars' mean distance:2.279+e11 m
Jupiter's v: 1.31e+4 m/s
Jupiter's mass:1.90+e27 kg
Jupiter's mean distance: 7.786+e11
Saturn's v: 9.6+e3 m/s
Saturn's mass:5.69+e26 kg
Saturn's mean distance: 1.433+e12 meters
Uranus' v: 6.8e+3 m/s
Uranus' mass:8.68+e25
Uranus' mean distance:2.873e+12 meters
Neptune's v: 5.4+e3 meters/s
Neptune's mass:1.03+e26 kg
Neptune's mean distance:4.495e+12 meters
Mercury's v: 4.74e4 m/s
Mercury's mass:3.3e+23 kg
Mercury's mean distance: 5.79e+10 meters
Venus' v: 3.5e+4 m/s
Venus' mass: 4.87e+24 kg
Venus' mean distance: 1.082e+11 meters
>disregard eccentricity and assume that there is no y component; assume it's 2-d.
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>>8156970
Really fuckin difficult mode: Include planetary interaction in this. Oh, god.
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>>8156970
Distance to Canis Majoris or gtfo.
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https://www.youtube.com/watch?v=fEE55gcttqo
fucking give this guy some credit already
this is NOT bait, lets go build a fucking computer out of this shit.
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>>8156804
Oh hey, that's the guy who I first heard of this shit from like 5 years ago. I'm interested in it in a number-theoretic sense, but I forgot how much of a crackpot he really is, decimal worship and math realism.
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>>8156818
everyone has his flaws, noone is perfect.
only together can we materialize what bright minds can think up. Maybe some of them worked alone but almost all of them had help.
so why not put his crackpot theories under a real test at least, not just bashing.
he also posted that magnetocaloric effects make for a better freezer than gas compression, there is already a company producing it.
He may not be a dope engineer but this vortex math is very implementable.
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>>8156846
Are you saying this guy was a pioneer magnetic refrigeration?
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Why does some anons on /sci/ hate the concept of RF resonant cavity thruster and the other anons endorse it?
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>>8156205
Old conflict between conservative and liberal scientists
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>>8156205
Because it's /x/ material at best. People including NASA tried it and failed. The power output you get from cavity resonance thrusters are a fraction of the power you put in.
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>>8156234
>NASA tried it and failed
It produced thrust. You seem to have an odd definition of success.
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>Can /sci/ recommend any good books on bottom-up approaches to nanotechnology?
I'm an undergrad researcher in the middle of my second project and am pretty certain that nanotech is the broad field which I want to go into and probably get my Master's through related research.
I'm trying to narrow down specific sub-fields that I'd like to work on in the future and bottom-up manufacturing is one that really appeals to me from the reading I've done so far.
But I'd like to explore the topic further and at a more detailed level before making any long term decisions.
Similarly, if anyone has any recommendations for other nanotechnology sub-fields which they personally find interesting or would like to discuss, go for it.
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Bump, just got home from work.
It appears that bottom-up manufacturing may not be a topic with sufficient interest on this board, so feel free to discuss anything nanotechnology related in here.
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>>8156661
Yeah I was kind of disappointed that /sci/ wasn't a faster/more popular board.
I'll bump your thread with some nice elliptic paraboloids, since it is actually useful and not blatant shitposting b8. Hope you find what you're looking for.
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>>8155882
engines of creation by k eric drexler
or go watch one of his lectures, he's all about the bottom up approach
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2+2=4
do you have any hard math problems?
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>>8172669
1+1
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>>8172669
Use chords to split a circle into equal area pieces that are all non-congruent with each other
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>>8172673
1+1=2
proof?
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>State your career/major and explain why you went into it
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>>8167599
>math/phys
i think it's interesting, and it has been so far
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Biochemistry and molecular biology/biotechnology.
I like drugs.
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not trying to be edgy here but do you ever think about how dumb the average person is?
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>>8163435
Intelligence =/= knowledge
>/thread
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>>8163435
The average person will surprise you when they momentarily overcome their apathy.
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Yes.
Anonymous
This video will show how the piano would sound like when its equally divided100 per octave. 2016-06-24 03:08:41 Post No.8160895
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This video will show how the piano would sound like when its equally divided100 per octave. 2016-06-24 03:08:41 Post No.8160895
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This video will show how the piano would sound like when its equally divided100 per octave.
Anonymous
2016-06-24 03:08:41
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https://www.youtube.com/watch?v=shcrw2vtmJU
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This is neat. And pointless.
But still neat.
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The the whole 88-key keyboard only covers 88/100ths of an octave? Weird. Why not start with the standard 12 steps on an octave and divide those in half 3 times to get 12*8=96 steps per octave? Maybe it doesn't matter as it would sound similar.
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>>8160923
This is acoustic 96 tone piano. But very rare https://m.youtube.com/watch?v=IEnlgXFAfd4
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>What would happen if an object was massive enough to exhibit gravity, but was not spherical or disc-like, akin to the natural heavenly shapes?
Say there was a huge cuboid, like a cosmic sheet of paper, massive cylinders and pyramids, or more complex shapes like post-modern "art" (Or a space highway?).
Also let's wave our wand and say these things are sturdy enough to not collapse in on themselves.
>What would the orbits of those things look like?
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>>8164923
The same as any other object. The shape is irrelevant
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>>8164923
why does it need to be huge? It would have a better chance of not collapsing if it was small.
their orbits would be exactly the same as those of a sphere with the same center of gravity.
They could be spinning like mad doe.
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>>8164926
Not if the orbits are close to the surface
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>The team responsible for China's Long March 7 launch has an average age of 25 y.o
https://m.youtube.com/watch?v=uFO8hnSWy3Q
So, what are you nerds doing with your life?
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>>8163203
>So, what are you nerds doing with your life?
Teaching calculus and getting drunk a lot. I'm 25 btw.
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>>8163203
I rather work for elon musk making proprietary software than working for Chin Chong get paid so shit that I cant even afford proper dental care or clothes while flipping through declassified apollo 13 documents to piece together an aluminum trash can I call a rocket
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Alright, reading a paper, and I witness this
>F : R → C
Now I wouldn't go bother you to figure out what does this mean, however google does not work for these things. I only need a phrase or something to google to look it up. Any help ?
>Pic related: It's the context
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>>8169154
F is a function from the real numbers R to the complex numbers C
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>>8169156
I am thankful
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>>8169154
https://en.wikipedia.org/wiki/Function_(mathematics)#Notation
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Idk if this is the right board for it this but why is pedophilia considered a mental disorder by the DSM if homosexuality isn't? There seems to be a lack of consistency. In my personal opinion, any deviation from the sexual norm, except fetishes, should be called what it is, a disorder. If being gay was the norm, maybe being straight would be a disorder, but the reality is that the if everyone were gay, humans wouldn't exist for very much longer.
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>>8163722
>but why is pedophilia considered a mental disorder by the DSM if homosexuality isn't?
Because one is socially inappropriate on rational basis and the other is is socially inappropriate on the basis of prejudice.
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Don't worry. When Shillary gets elected, pedophilia will not be a crime or a mental disorder any more.
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>>8163722
I don't think pedophilia is a sexual disorder. I think there are just uncaring monsterous people out there targeting peoples kids and daughters for their own pleasure. Disorder or not, it definitely doesn't go into the same drawer as homosexuality. I think most of these are cultural and/or based on the individuals history but letting pedophiles go rampant is not up to negotiation.