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/sci/ Science & Math

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Most viewed threads in this category

Putnam/Olympiad problem of the day

29 more posts in this thread. [Missing image file: day[1].gif]
Daily problems at: http://math.harvard.edu/putnam/ To find threads: >>>/sci/putnam The Y2K Game is played on a 1 \times 2000 grid as follows. Two players in turn write either an S or an O in an empty square. The first player who produces three consecutive boxes that spell SOS wins. If all boxes are filled without producing SOS then the game is a draw. Prove that the second player has a winning strategy.


14 more posts in this thread. [Missing image file: 800px-Schrodinger_Equation.png]
Whose gonna help me decipher shrodingers equation?
5 more posts in this thread. [Missing image file: eyjafjallajokull-lava_drive_in.jpg]
How do I get a summer job in a geology related industry after the 1st year of engineering that I'm going into right now?
26 more posts in this thread. [Missing image file: StructuralEngineering[1].jpg]
Hey /sci/, what's with the ongoing hate for civil engineering here? I am specifically a structural engineer so I can not really speak for other civil engineering branches like traffic or transportation engineering, but in structural engineering aside from being educated the design of steel or concrete structures, we also focus on the theory of structural analysis behind all of this. Why the hate? it's a solid concrete major like any other.
27 more posts in this thread. [Missing image file: 293048249032402.jpg]
Say you were in a spaceship and were instantly transported to another section of space somewhere in the universe (e.g. through a wormhole or w/e). How far would you have to be from earth in order that you would have no idea where you are, if your ship carried a copy of all astronomical knowledge known to mankind and was outfitted with radio telescopes (etc.) equivalent to the most advanced that currently exist?
14 more posts in this thread. [Missing image file: kirknou.jpg]
You... cannot... into space!
3 more posts in this thread. [Missing image file: EM.png]
Trying to self-study basic (first undergrad class) electricity and magnetism for next semester, up through what's covered in Knight if that means anything to anyone. These two books are cheap and recommended on Amazon, which do you guys think would be more helpful?
0 more posts in this thread. [Missing image file: cochlear implant.jpg]
You probably saw this on the news a few weeks back; deaf kid gets a cochlear nerve implant because he was born without a cochlear nerve. they just send a trickle of current from a microphone right to his brain stem. I read about the 1st ones in Stars & Stripes magazine when they were done on military personnel who had been deafened by explosives. The guy interviewed said "It does not sound like talking; it's like a constant buzz but the buzz changes when people talk." The neurologist speculated that his brain would take sometime to learn to interpret the signal it was getting. Younger brains are so much more plastic that the little kid will probably get a lot more out of his than a grown man could. Question: does this mean we are close to a Google glass that is permanent? Could we implant a visual input? Might be nice to have 3 eyes, one always online.
5 more posts in this thread. [Missing image file: tumblr_m2kxfj9fZv1qd3x7jo6_1280.gif]
http://www.ncbi.nlm.nih.gov/pubmed/18621098 >We have used a chronic unpredictable mild stress (CMS) as a rat model of depression. CMS (5 weeks treatment) produced anedonia and increased corticosterone levels. These effects were accompanied by a detectable increase in caspase-3 positive neurons in the cerebral cortex, suggesting apoptosis. How do you deal with stress /sci/?
2 more posts in this thread. [Missing image file: sqp.jpg]
Putnam/Olympiad-how do I prepare? Also, polyester or any other cloth have impact on intelligence?
0 more posts in this thread. [Missing image file: It's nothing.jpg]
Higgs particle.
9 more posts in this thread. [Missing image file: 1365572795211.gif]
Which is more important, social skills or critical/logical thinking?
4 more posts in this thread. [Missing image file: js.jpg]
/sci/, i have started cycling great distances and to exercise both body and mind, i'd like to listen to mathematics or computer science audiobooks while at it. Got any? Not popular science stuff.
3 more posts in this thread. [Missing image file: img22.gif]
Can someone explain Markov Chain Monte Carlo to me in basic terms? I don't even know what it does (approximate a distribution of interest?) or why that would be useful. I have no idea what this graph means. Please refrain from using statistical jargon since I'm a programmer by training.
0 more posts in this thread. [Missing image file: images.jpg]
Guys, i need your help. I need someone with an access to Pubmed. I live in the 3rd (Eastern Europe) and our university library doesn't have the access to Pubmed. Literally anything of this would be much, much appreciated Thanks in advance http://pastebin.com/pUzQzxdY
11 more posts in this thread. [Missing image file: film-noir.jpg]
Hey, /sci/ I've been writing a crime noir novel, and I've come up to a chapter with an autopsy. However, I may not be the best when it comes to the lingo. Can you please have a read over what I've written? The man was beaten to death, however, had been sexually active during that time... so here goes nothing. Piece 1: 'As you can see, there have been several incisions, nothing fatal, but caused considerable blood loss. All of these cuts were made during a period of between ten weeks and, at least, four days ago.', he then moved on to the bruising, 'Here we see trauma from a blunt object, or several blunt objects. All taken place within the same timeframe as the cuts. Apart from those, Anon was whipped, scratched, and starved. Finally, from these markings around his wrists, neck and ankles, it appears he was bound and gagged with ropes or leather straps. Now, either somebody knew what they were doing, or it was something of a miracle that he survived so long. As far as I am aware, he was supplied with a continuous amount of a drug, maybe cocaine, procaine, opium, morphine; at least some kind of alkaloid, to take the pain away, which must have kept him going. But I'll have a better chemical analysis in the morning.' Piece 2: 'Anon has deep scratch wounds in his back, each with their own unique size and force. These kinds of wounds are generally caused by women, for some reason. I'm not quite sure why. However, all of the bruising and internal trauma, was caused by either a man or a very strong woman. There is too much bruising to focus on a single imprint, to get a size of the fist. It's all a work in progress, this early on in the piece.' cont.
2 more posts in this thread. [Missing image file: whattoread.jpg]
Hey /sci/, I am just finishing "the singularity is near" by Kurzweil, and I need a new popsci book to read in my spare time. Since I couldn't care less about astronomy or biology (which is usually what most of popsci is about), I only found these two books to be candidates. So, which one should I go for, the new one from Kurzweil, or GEB? I also need to mention that I study computational neuroscience, so I am familar with most of the stuff in Kurzweil's book regarding AI/neuroscience, but I am also intrigued as to how he imagines to model the brain with HHMMs. On the other hand I had a look into GEB, and it seems like a really great read. The thrid alternative would be to read "Ender's Game" by Orson Scott, since I am interested in AI/warfare. Or I could ditch all of this, and instead focus more on my textbooks? What would /sci/ do? >inb4 GEB b8
5 more posts in this thread. [Missing image file: su.jpg]
>January 28, 2009 - Sub-atomic-scale Writing Using a Quantum Hologram Sets New Size Record >in this experiment we’ve stored some 35 bits per electron >35 bits per electron What the fuck happened with this and why aren't we having exabyte sized USB drives?
20 more posts in this thread. [Missing image file: 1372758160215.jpg]
This image caused a large argument on /a/ this morning (most said 50%, some 66.67%, some 75%). So what is the actual answer to this?
3 more posts in this thread. [Missing image file: ss (2013-04-14 at 08.49.58).jpg]
Ok, guys. I'm getting my android phone via mail today. What apps should I get myself? I'm not looking to spend more than 20$ total, so free apps would be nice. I'm a physics student, so I obviously want to get some science apps (eg. wolframalpha) but I'll also take any other useful app for studying/productivity purposes. Also things, that make my phone slightly less pleb (like swiftkey).

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