Search found 41 matches

by kandalf
Tue Apr 02, 2013 4:26 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1193: Externalities
Replies: 505
Views: 152660

Re: 1193: Externalities

We have a Go implementation running on 40 or so c1.xlarge ec2 instances. I think we're at something like 16 million/second total (i.e. 50k/core). The obvious next step would be to rewrite in C or for the GPU, but it seems so far no one here has the motivation to do that. The one aws code/billing cyc...
by kandalf
Thu Apr 21, 2011 5:04 pm UTC
Forum: Books
Topic: xkcd's favourite 100 books - vote now!
Replies: 226
Views: 185521

Re: xkcd's favourite 100 books - vote now!

1. A Song of Ice and Fire - George R. R. Martin 2. The Baroque Cycle - Neal Stephenson 3. Malazan Book of the Fallen - Steven Erikson 4. House of Leaves - Mark Z. Danielewski 5. Wheel of Time - Robert Jordan And then some good books in no particular order: Mistborn Trilogy - Brandon Sanderson Snow C...
by kandalf
Fri Jul 09, 2010 7:31 pm UTC
Forum: Gaming
Topic: You gotta get into Dwarf Fortress if you haven't already.
Replies: 4596
Views: 710778

Re: You gotta get into Dwarf Fortress if you haven't already

After 5 or so attempts to get into this game over the past years, I've finally done it! I've got a haphazard fortress going. So far I'm 5+ waves in, and have yet to experience any major attack (just a couple thieving goblins). I'm working on getting a steady stream of metalworking going on, but secu...
by kandalf
Thu Nov 05, 2009 3:36 am UTC
Forum: Books
Topic: Wheel of Time (Split from Geeky/Nerdy Kids Books)
Replies: 228
Views: 129851

Re: Wheel of Time (Split from Geeky/Nerdy Kids Books)

I'm working on my ~2.5 full read of the series. I dunno if I can match a book a week tho (I could, but my grades would prolly suffer). We'll see if I get fed up and just skip to Gathering Storm or not :p. I'm planning on skipping book 10 regardless...
by kandalf
Tue Nov 03, 2009 2:53 am UTC
Forum: XKCD Meetups
Topic: MIT Splash!
Replies: 17
Views: 4908

Re: MIT Splash!

The catalog is getting hammered now (at least I can't get through). Luckily, I spent the last hour writing a parser, so here ya go.... (signups open tomorrow, full catalog posted today) Also, I have no clue (well, I sorta do actually) why all single quotes get replaced by question marks, and I have ...
by kandalf
Mon Oct 05, 2009 4:03 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0645: "RPS"
Replies: 185
Views: 51709

Re: "RPS" Discussion

I think I missed out on all of the joke I think :/

Edit: Something to do with RPN?
by kandalf
Sat Sep 19, 2009 11:53 pm UTC
Forum: School
Topic: FIRST Robotics thread
Replies: 76
Views: 13828

Re: FIRST Robotics thread

Not to hijack the thread, but is anyone doing InvenTeams? We got past the first round, and our application was all in last Friday...
by kandalf
Wed Sep 02, 2009 3:09 am UTC
Forum: School
Topic: Your Schedule
Replies: 655
Views: 164780

Re: Your Schedule

High School, Grade 11: 1. AP Computer Science 2. Spanish Va (It's the class before AP Spanish) 3. Jazz Band 4. Multivariate Calculus + Linear Algebra 5. AP World 6. AP Physics (lunch) 7. Gym 8. AP English III Having gym after lunch is nice because gym always starts late. We have the same classes eve...
by kandalf
Wed Sep 02, 2009 2:38 am UTC
Forum: School
Topic: Clubs!
Replies: 27
Views: 3120

Re: Clubs!

Our school has Meat Club, pretty much the best club on earth. It relates to the appreciation of meat of all kinds. >.>
by kandalf
Mon Aug 31, 2009 4:21 am UTC
Forum: School
Topic: High School Pranks
Replies: 684
Views: 89996

Re: High School Pranks

My school prints a school newspaper every now and then. I was wondering if it'd be possible to print my own version, and then replace them for a prank. Only problem is I don't know where the newspaper paper comes from. (It's like the one's you see in a real newspaper). If I could reproduce that thi...
by kandalf
Mon Aug 31, 2009 1:05 am UTC
Forum: Gaming
Topic: Gratuitous Space Battles
Replies: 25
Views: 5604

Gratuitous Space Battles

So the preorder/beta starts tomorrow. Anyone else buying it? For those who don't know, it's a 2d space sim with a twist. You build your ships, set your orders, and then let the battle unfold... you have almost no control over your ships once the battle starts. GSB is the next game from UK developer ...
by kandalf
Mon Aug 31, 2009 12:56 am UTC
Forum: Gaming
Topic: Discussion: Zero-gravity dogfights.
Replies: 26
Views: 3131

Re: Discussion: Zero-gravity dogfights.

Zero-gravity dogfights? Say hello to my little friend. Grab a mate and make a server. Enjoy dogfighting with no gravity, no auto-orientation, no defined up or down and full Newtonian physics. It's glorious and will change the way you think about space. And eventually the full version of that game w...
by kandalf
Sat Aug 29, 2009 8:28 pm UTC
Forum: Books
Topic: House of omgwhyamIturningmybook Leaves.
Replies: 239
Views: 61392

Re: House of omgwhyamIturningmybook Leaves.

I just bought the book. Mine is the "Full Remastered Color Edition", it was the only one in stock. I'm on chapter V, and so far it's interesting... :/
by kandalf
Thu Aug 27, 2009 4:08 am UTC
Forum: Movies and TV Shows
Topic: Suitable movie to watch nonstop for 24 hours
Replies: 94
Views: 35532

Re: Suitable movie to watch nonstop for 24 hours

24 hours of Primer is about how much time it would take to figure it out...
by kandalf
Wed Aug 19, 2009 6:16 am UTC
Forum: Books
Topic: Iain M. Banks
Replies: 124
Views: 172965

Re: Iain M. Banks

My uncle actually dumped a half dozen of Banks' books on me after reading them on a vacation. (Algebraist, Consider Phlebas, Feersum Enjinn, Excession, Look to Windward, Against a Dark Background). I read them over a year or so, but really enjoyed most of them. A couple months ago I checked out Play...
by kandalf
Tue Aug 11, 2009 6:56 am UTC
Forum: Coding
Topic: Interesting Challenge
Replies: 9
Views: 1389

Re: Interesting Challenge

As I have some experience with automation in browser based games.... I've seen it done in Greasemonkey, in perl, in php, and in java.... Greasemonkey is good for automation where you can sit there and tend to it. Perl or java you can write a program with varying degrees of complexity to automate lar...
by kandalf
Sun Jul 19, 2009 5:04 pm UTC
Forum: Science
Topic: i have to make it.. don't ask me why, i just do..
Replies: 80
Views: 15845

Re: i have to make it.. don't ask me why, i just do..

You can also try maybe using lightweight wire to guide the lightning through the sand in a certain pattern. I'm not sure if the fulgurite would form tho, but may the wire would vaporize...
by kandalf
Thu May 28, 2009 12:07 am UTC
Forum: Books
Topic: Books that make you genuinely laugh
Replies: 107
Views: 18516

Re: Books that make you genuinely laugh

Wow, LoganCale. Way to nail exactly the books I was going to say. Not too many books have made me laugh out loud, but Christopher Moore did it consistently and The Cryptonomicon + The Baroque Cycle (especially the latter) are hilarious in some parts. I would say Lamb is Moore's funniest book.
by kandalf
Wed May 27, 2009 6:56 pm UTC
Forum: Mathematics
Topic: Second order differential equation (nonlinear)
Replies: 12
Views: 1577

Re: Second order differential equation (nonlinear)

That slightly rounded argument pretty much convinces me, my teacher used the same idea...

{still no answer to this problem :( }
by kandalf
Sun May 24, 2009 12:02 am UTC
Forum: Movies and TV Shows
Topic: Cringe
Replies: 225
Views: 67370

Re: Fringe

I started to get bored in the middle of the season, but I found the last two episodes to be more satisfying.
by kandalf
Sat May 23, 2009 11:55 pm UTC
Forum: Mathematics
Topic: Second order differential equation (nonlinear)
Replies: 12
Views: 1577

Re: Second order differential equation (nonlinear)

Well. My physics teacher gave it to one of his physics friends (I assume from the Institute or at PU), the guy says he thinks the normal force is probably pointing upwards, but my teacher isn't convinced. Am I allowed to repost this problem on the science board?
by kandalf
Tue May 19, 2009 10:24 pm UTC
Forum: Logic Puzzles
Topic: tangent circles
Replies: 26
Views: 3879

Re: tangent circles

Spheres in 3d gives you five max, and following from circles then we get an infinite number of tangent spheres in 4d space...
by kandalf
Fri May 15, 2009 11:29 am UTC
Forum: Mathematics
Topic: Second order differential equation (nonlinear)
Replies: 12
Views: 1577

Re: Second order differential equation (nonlinear)

Ah. That complicates matters, slightly. I'll try to write v in terms of theta and t during school today. Who knows, maybe it'll cancel something :p
by kandalf
Thu May 14, 2009 5:07 pm UTC
Forum: Mathematics
Topic: Second order differential equation (nonlinear)
Replies: 12
Views: 1577

Re: Second order differential equation (nonlinear)

You raise an interesting point about the horizontal velocity not remaining unchanged. I'm not sure your example really convinces me though. I'm only in my first year of physics, but it seems to me that the horizontal velocity should remain constant throughout the problem assuming no friction and no ...
by kandalf
Thu May 14, 2009 1:40 pm UTC
Forum: Mathematics
Topic: Second order differential equation (nonlinear)
Replies: 12
Views: 1577

Second order differential equation (nonlinear)

Hey guys, I came up with an interesting problem, but I am unable to solve it. The problem is the following. Consider a rod moving off a cliff at a speed v. Once the rod has cleared the cliff, what angle does it make with the horizontal? I have found this equation with the help of my math teacher, bu...
by kandalf
Wed May 13, 2009 11:32 am UTC
Forum: Mathematics
Topic: AP Calc BC 2009
Replies: 17
Views: 2818

Re: AP Calc BC 2009

Yeah, I realized what I did wrong now. I forgot to fix the arctangent or whatever arc function to get it in the right quadrant :p
It was number 4 that I made the parentheses mistake with the natural log.


@georgehorse - can't a casio do that also?
by kandalf
Tue May 12, 2009 2:28 am UTC
Forum: Mathematics
Topic: AP Calc BC 2009
Replies: 17
Views: 2818

Re: AP Calc BC 2009

The test was definitely harder then I expected. For question six I ended up just half-assing a and b, and making up a general term for c so I could do the ratio test :p And I realized with ten seconds left I had screwed up the last part of number 3. I got sin(6-y) from taking the integral, and then ...
by kandalf
Mon Feb 23, 2009 10:02 pm UTC
Forum: Mathematics
Topic: Traveling across a square
Replies: 24
Views: 6943

Re: Traveling across a square

This is pretty funny because I came up with this walking home from school one day and I've been puzzled about it ever since! On the other hand, I don't get much of the math in this thread :p
by kandalf
Wed Feb 04, 2009 10:56 pm UTC
Forum: Mathematics
Topic: Horrible Math in Commercials
Replies: 23
Views: 3634

Re: Horrible Math in Commercials

What they really meant was a 2d representation of a 2d image, instead of the norm: a 2d rep of a 3d image.
by kandalf
Tue Dec 09, 2008 2:59 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0514: "Simultaneous"
Replies: 144
Views: 29707

Re: "Simultaneous" Discussion

First I was going how the hell is this supposed to be funny? I got it after a minute and chuckled. Pretty good comic today.
by kandalf
Mon Dec 08, 2008 11:07 pm UTC
Forum: Gaming
Topic: Twilight Heroes (Split from Kingdom of Loathing)
Replies: 0
Views: 670

Twilight Heroes (Split from Kingdom of Loathing)

I played KoL for quite a while - some years (#180408 if you care). But I lost interest after NS13 came out. I've been playing Twilight Heroes (http://www.twilightheroes.com) since then, which I am enjoying a lot. The game is a bit similar, but has an entirely different theme. It's also turn based, b...
by kandalf
Wed Oct 08, 2008 9:20 pm UTC
Forum: Logic Puzzles
Topic: Count the triangles
Replies: 15
Views: 3445

Re: Count the triangles

Now generalize it for a rectangle of size x by y!
:p
by kandalf
Sat Sep 20, 2008 4:11 am UTC
Forum: Logic Puzzles
Topic: Mars base
Replies: 13
Views: 2542

Re: Mars base

Update: I wrote a program to simulate this problem. It works through a simplification. It finds the midpoint between A and B, and moves B every .1 seconds towards the midpoint, and moves C every .1 seconds towards B, and counts how many steps it takes... Edit: Mkay. Here are the numbers 100 trials @...
by kandalf
Sat Sep 20, 2008 12:09 am UTC
Forum: Logic Puzzles
Topic: Mars base
Replies: 13
Views: 2542

Re: Mars base

While this problem interests me, I don't have the math skills to grasp how to compute the pursuit of the C robot. Would it still be worthwhile if I were to program a script that simply movement and rechecked location on very small increments, say, one hundreth of a millisecond?
by kandalf
Mon Aug 18, 2008 5:42 pm UTC
Forum: Logic Puzzles
Topic: Two Pieces of Paper
Replies: 7
Views: 2786

Re: Two Pieces of Paper

Technically it can be done without a knowledge of boggle - an analysis of the duplicates of letters shows that there are only sixteen letters making up all the words, and then it's just an anagram. Made easier if you guess the first bit.
by kandalf
Mon Aug 18, 2008 2:10 am UTC
Forum: Logic Puzzles
Topic: Two Pieces of Paper
Replies: 7
Views: 2786

Re: Two Pieces of Paper

Yep, that's the answer.
Spoiler:
potatoes, that is. I spent a while before figuring out it was boggle, and I was able to use some educated guessing to go from there.

Well done!
by kandalf
Thu Aug 14, 2008 7:32 pm UTC
Forum: Logic Puzzles
Topic: you're floating through space II
Replies: 38
Views: 4070

Re: you're floating through space II

Ah, yeah, I thought that might be the case. Hm.
by kandalf
Thu Aug 14, 2008 6:30 pm UTC
Forum: Logic Puzzles
Topic: you're floating through space II
Replies: 38
Views: 4070

Re: you're floating through space II

Spoiler:
For number 1, Assuming you can judge what one mile is: Walk one mile away. Then walk in a circle around your starting point. For number 2, the same thing applies, move one unit, and then travel in a circle around your starting point
by kandalf
Thu Aug 14, 2008 5:02 pm UTC
Forum: Logic Puzzles
Topic: Two Pieces of Paper
Replies: 7
Views: 2786

Two Pieces of Paper

Please note I did not come up with this puzzle, and the solution is available on the web - please refrain from looking it up and posting it here - solve it yourself! I was presented with this problem this summer, and I enjoyed it a lot. I don't think it's too difficult. I have recreated it on this p...
by kandalf
Thu Aug 14, 2008 4:43 pm UTC
Forum: Logic Puzzles
Topic: Conference; the IMO shortlist [solution discussion]
Replies: 3
Views: 2629

Re: Conference; the IMO shortlist [solution discussion]

I may take a look at the other problem as I have a bit of experience with graphs and cliques from a theory of computation class I took this summer.

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