Search found 136 matches

by cspirou
Sat Nov 12, 2011 7:59 am UTC
Forum: Fit Club
Topic: Personal Records
Replies: 159
Views: 60125

Re: Personal Records

I signed up for a marathon in March and I've been training for 3 months for it. I'm not a distance runner so I'm especially proud of these lame times.

1 mile-7:45 (High school was 6:30 but I don't count that anymore)
2 mile- 16:30
5k-27:13
11k-1h4m
10 miles-1h58.
by cspirou
Thu Feb 10, 2011 8:10 pm UTC
Forum: Computer Science
Topic: Supercomputing basics
Replies: 2
Views: 2057

Supercomputing basics

I just wanted know some basics on the software involved for supercomputing. Assume that the cluster works on Linux. How does the installation work? Does each node have the exact same setup? Or is there some kind of master node with the full setup with slave nodes that have a stripped down setup? Whe...
by cspirou
Tue Aug 10, 2010 6:22 pm UTC
Forum: Hardware
Topic: Modern computing vs Biology
Replies: 9
Views: 1695

Modern computing vs Biology

There's a BBC article about how the brain works more like the internet then a traditional computer. http://www.bbc.co.uk/news/science-environment-10925841 I'm not much of a computer scientist but I am very interested in the relation between computer science and nature. Is it more efficient to design...
by cspirou
Tue Jul 20, 2010 5:08 pm UTC
Forum: Fit Club
Topic: Stretching
Replies: 3
Views: 1712

Stretching

Say you are someone that has never stretched a day in your life. If you are very dedicated, how long would it take to get to the point where you could do the splits? In the interest of making this a topic about stretching in general I read an article about how the usual stretching routine before exe...
by cspirou
Tue Jul 20, 2010 4:36 pm UTC
Forum: Fit Club
Topic: How many of you view exercise as a chore?
Replies: 47
Views: 10944

Re: How many of you view exercise as a chore?

It really depends. If you're talking about running or lifting weights then it's a chore. A long time ago I mainly kept in shape with sports which was always fun for me and I never worked out. I could play tennis for hours and even though I would get tired, it never really felt like it was a chore. I...
by cspirou
Mon Jul 19, 2010 5:02 pm UTC
Forum: Science
Topic: evolution: hard to fathom instances
Replies: 219
Views: 34157

Re: evolution: hard to fathom instances

Hi everyone.

I was thinking about something and I thought it would be better to resurrect this thread instead of starting a new one.

What is the evolutionary pressure that led to the left side of the brain controlling the right side of the body and vice versa?
by cspirou
Mon Jul 19, 2010 4:49 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0768: "1996"
Replies: 190
Views: 51081

Re: "1996" Discussion

In the case of TI it's not the hardware you're paying for, it's the software. Just like at Windows now and Windows back then. It's gotten more expensive and hasn't really added features. It's just gotten more bulky. Or a more reasonable comparison is Mathematica. The software hasn't gotten that all ...
by cspirou
Fri Jul 16, 2010 5:39 pm UTC
Forum: Fit Club
Topic: Personal Records
Replies: 159
Views: 60125

Re: Personal Records

100m:11.99
1 Mile: 6:30 (in high school)
by cspirou
Sat Jul 18, 2009 12:00 am UTC
Forum: General
Topic: Best way to clean socks
Replies: 20
Views: 1954

Re: Best way to clean socks

So for washing it might not matter. But what about drying? I actually think that it's better that socks are inside-out when in the dryer. The basic theory is that the inside of a sock is like a towel and traps moisture. If the sock is regular then that side isn't exposed to the heat as much and will...
by cspirou
Thu Jul 16, 2009 4:02 pm UTC
Forum: General
Topic: Best way to clean socks
Replies: 20
Views: 1954

Best way to clean socks

Does orientation matter when it comes to cleaning socks?
by cspirou
Wed Jul 15, 2009 8:45 am UTC
Forum: Serious Business
Topic: The least racist country?
Replies: 107
Views: 15374

Re: The least racist country?

Well, at all isn't correct. I don't hear enough racist taunts so as to call it "routinely heard". I think the other points are much more common. I think they spend more time insulting the other team than being racist if you ask me. They are stupid so they try whatever they have. Unfortuna...
by cspirou
Fri Jun 12, 2009 8:25 pm UTC
Forum: News & Articles
Topic: Chirac claims Bush invoked Bible to get France in CoW
Replies: 23
Views: 1811

Re: Chirac claims Bush invoked Bible to get France in CoW

By the way, is "monkey" related to this great era, or is monkey-in-chief a generic thing about heads of state? I think in this case "monkey" was tied to "surrender" when the phrase was initially coined (on The Daily Show?). The French are "surrender monkeys",...
by cspirou
Thu Jun 11, 2009 7:47 pm UTC
Forum: News & Articles
Topic: Chirac claims Bush invoked Bible to get France in CoW
Replies: 23
Views: 1811

Re: Chirac claims Bush invoked Bible to get France in CoW

Lumpy wrote:It was a jokey reference to the "freedom fries" mentality in 2003, not meant seriously.


I know exactly what you're referring too and I'm saying it wasn't funny to begin with and it's still not funny now.
by cspirou
Thu Jun 11, 2009 7:40 pm UTC
Forum: Serious Business
Topic: The least racist country?
Replies: 107
Views: 15374

Re: The least racist country?

Anyone who puts France down as a candidate needs their head examining. The riots that happen on a yearly basis between the police/affluent v the moroccans,algerians,blacks, [insert ethnic minority here]. It happens almost every single year. This is how Le Pen managed to cause a furore a while back ...
by cspirou
Thu Jun 11, 2009 7:20 pm UTC
Forum: News & Articles
Topic: Chirac claims Bush invoked Bible to get France in CoW
Replies: 23
Views: 1811

Re: Chirac claims Bush invoked Bible to get France in CoW

Lumpy wrote:There's only so much you can jam into a headline, but according to former cheese eating surrender monkey-in-chief Jacques Chirac, Bush invoked the end-world Biblical prophecy of Gog and Magog.

What do you mean "former" cheese eating surrender monkey? He never was one to begin with.
by cspirou
Tue Apr 14, 2009 4:52 pm UTC
Forum: Serious Business
Topic: Design your own ideal education system
Replies: 53
Views: 11301

Re: Design your own ideal education system

I've done some thinking about this and I believe I know what works for me. So this is what the cspirou education system would look like. One thing is that handling multiple subjects at the same time is not something I ever did well at and I usually focus on one and resign the rest to being C's or a ...
by cspirou
Sat Feb 28, 2009 2:10 am UTC
Forum: Mathematics
Topic: What is wrong with this? 1=-1?
Replies: 32
Views: 3168

Re: What is wrong with this? 1=-1?

(a^b)^c = a^{bc} isn't true in general when (edit:) b, c aren't both integers (misread!). Any number has two square roots ( with multiplicity - I know how you xkcd kids love to nitpick!), and what you did amounts to picking the wrong square root. Yes it is. Show me something where it's not ...
by cspirou
Sat Feb 28, 2009 2:03 am UTC
Forum: Serious Business
Topic: Tipping people
Replies: 150
Views: 15403

Re: Tipping people

But it's an artificial necessity. Your suggestion of a boycott isn't equivalent to high petrol prices increasing demand for efficient cars... it's closer to if petrol companies wanted efficient cars, and intentionally jacked up the prices to encourage it. Sure, in the end you get your fancy cars, b...
by cspirou
Sun Feb 22, 2009 2:12 am UTC
Forum: Mathematics
Topic: What is wrong with this? 1=-1?
Replies: 32
Views: 3168

Re: What is wrong with this? 1=-1?

(a^b)^c = a^{bc} isn't true in general when (edit:) b, c aren't both integers (misread!). Any number has two square roots ( with multiplicity - I know how you xkcd kids love to nitpick!), and what you did amounts to picking the wrong square root. Yes it is. Show me something where it's not ...
by cspirou
Sun Feb 22, 2009 1:59 am UTC
Forum: Serious Business
Topic: Tipping people
Replies: 150
Views: 15403

Re: Tipping people

I was thinking about maybe not tipping is an effective way to change. Refusing to pay someone for the work they tender in order to force *them* to lobby for laws to be changed to suit *your* preferences is about the least effective way of getting things done ever. I am not really refusing to pay. L...
by cspirou
Fri Feb 20, 2009 9:17 am UTC
Forum: Serious Business
Topic: Tipping people
Replies: 150
Views: 15403

Re: Tipping people

I was thinking about maybe not tipping is an effective way to change. I was thinking about the situation with gas prices. It would be great to get fuel standards when gas prices are low but that never happens. Then when oil goes to $200/barrel the car companies suddenly are under enormous pressure t...
by cspirou
Fri Feb 13, 2009 10:51 am UTC
Forum: Mathematics
Topic: Residue Calculus Problem
Replies: 16
Views: 2144

Re: Residue Calculus Problem

Ever heard of Jordan's lemma? It's only for curves in the upper half of the complex plane. Well on of those terms can be interpreted as being in the lower plane and goes to infinity. It's better to do cos(x)=Re[e^(ix)] instead of breaking up into exponentials. Then just take the real part in the end...
by cspirou
Sun Feb 08, 2009 7:47 pm UTC
Forum: Serious Business
Topic: Tipping people
Replies: 150
Views: 15403

Re: Tipping people

I think one of the reasons tipping doesn't, according to the study linked earlier, effect service quality is because most people tip regardless of service and generally tip generously or you are scene as something of an asshat. This kind of defeats the purpose of tipping, assuming that it is a way ...
by cspirou
Sun Feb 08, 2009 1:22 am UTC
Forum: Serious Business
Topic: The least racist country?
Replies: 107
Views: 15374

Re: The least racist country?

Regarding islamophobia, it is hard to tell what is motivated by racism from what isn't. Also, it is so convenient to be against Muslims without admitting to be racist. Which is true. My opinion is colored by how black people were treated in France in comparison to how they were treated in the USA. ...
by cspirou
Sat Feb 07, 2009 7:53 am UTC
Forum: Science
Topic: Generator mystery
Replies: 8
Views: 1050

Re: Generator mystery

Charlie! wrote:You couldn't, unless it was a superconductor, since any magnetizing done would mean that there was a circular current going on.


Superconductors don't have magnetic fields in them.
by cspirou
Thu Feb 05, 2009 3:31 am UTC
Forum: Science
Topic: Generator mystery
Replies: 8
Views: 1050

Re: Generator mystery

@Sargon True, but those all have tiny small permanent magnets inside. Although now that I think about it. Couldn't you have an iron core of some sort in the middle of an alternator? It would be exposed to the magnetic fields while it is at work and then when you've stopped the core would be magnetiz...
by cspirou
Thu Feb 05, 2009 2:55 am UTC
Forum: Science
Topic: Generator mystery
Replies: 8
Views: 1050

Re: Generator mystery

Ok, so the only way you can generate power without a magnet is if you've generated power before. Or you just have to defer the beginning to a smaller generator with a permanent magnet. This seemed like the common sense answer to me but for some reason I thought there was a pure way to convert motion...
by cspirou
Thu Feb 05, 2009 2:09 am UTC
Forum: Serious Business
Topic: The least racist country?
Replies: 107
Views: 15374

Re: The least racist country?

I think it's probably the Netherlands or France. I know that there were riots in France and similar Muslim violence in the Netherlands. However those did not have to do with race. The French don't care about race or national origin one bit unless you're in the Front Nationale. But failure to assimil...
by cspirou
Thu Feb 05, 2009 1:38 am UTC
Forum: Science
Topic: Generator mystery
Replies: 8
Views: 1050

Generator mystery

There isn't an engineering forum so science will have to do. I've always been a little confused about how generators or alternators get started. I know that instead of a magnet they use an electromagnet which is also powered by the mechanical energy used to turn the generator. However when nothing i...
by cspirou
Thu Feb 05, 2009 1:22 am UTC
Forum: Science
Topic: Rapidly rotating wire
Replies: 52
Views: 3545

Re: Rapidly rotating wire

Are we completely ignoring that this would radiate energy and slow down?

Are we also assuming that one end is "magically" fixed in space or is it somehow rotating around a center of mass?
by cspirou
Thu Feb 05, 2009 1:16 am UTC
Forum: Mathematics
Topic: x - cos(x) = 0
Replies: 36
Views: 9350

Re: x - cos(x) = 0

The fact that it's iterative says nothing about whether it has any attractors. There are plenty of examples of iterative mappings with no attractors (in \mathbb{R} ), for example f(x) = x^2 + 1 . First of all it only intersects at one point and that point is an attractor. Second of all the ...
by cspirou
Mon Jan 26, 2009 6:52 am UTC
Forum: Mathematics
Topic: x - cos(x) = 0
Replies: 36
Views: 9350

Re: x - cos(x) = 0

It gets attracted to that point because it's an iterative mapping.

http://hypertextbook.com/chaos/11.shtml
by cspirou
Thu Jan 15, 2009 5:28 am UTC
Forum: Mathematics
Topic: x - cos(x) = 0
Replies: 36
Views: 9350

Re: x - cos(x) = 0

You won't find an algebraic expression because it's a transcendental function. You can only solve for x when it's a finite polynomial. same thing goes for x=5^x.
by cspirou
Wed Jan 14, 2009 8:50 am UTC
Forum: Hardware
Topic: Trying to decide between a PC and a Mac
Replies: 76
Views: 6603

Re: Trying to decide between a PC and a Mac

Macs are not significantly more expensive than equivalent PCs, in general. That said, it's very true that Apple doesn't make low-end machines. If a low-end machine is what you want, then a Mac isn't for you. Personally, as a lifelong Microsoft user until two years ago, I love my MacBook, but a lot ...
by cspirou
Fri Jan 09, 2009 8:49 am UTC
Forum: Hardware
Topic: Trying to decide between a PC and a Mac
Replies: 76
Views: 6603

Re: Trying to decide between a PC and a Mac

I don't know what you did but I did the pricing and I get $2213 with a sale price of $1683. I went to the Lenovo Elite ThinkPad T500 , added 2GB of memory, upgraded the hard drive to the 320GB option. The website is still showing me the prices I said before. I won't argue with that. But notice that...
by cspirou
Fri Jan 09, 2009 1:22 am UTC
Forum: Hardware
Topic: Trying to decide between a PC and a Mac
Replies: 76
Views: 6603

Re: Trying to decide between a PC and a Mac

Apple doesn't sell on the low end, what's your point? On the high end, the Mac is still far more expensive. Example: Configured MacBook Pro with: -15 in screen -2.53GHz Core 2 Duo -4GB DDR3 -320GB HDD @ 5400rpm Total: $2499 Configured Lenovo ThinkPad T500 with: -15.4 in screen -2.53GHz Core 2 Duo -...
by cspirou
Thu Jan 08, 2009 6:42 pm UTC
Forum: Hardware
Topic: Trying to decide between a PC and a Mac
Replies: 76
Views: 6603

Re: Trying to decide between a PC and a Mac

Windows box for sure. You may not get the hipster cred, but you can get build quality, speed, and software for cheaper. If you're worried about build quality, get yourself a thinkpad. They've got some of the best built stuff around, in my opinion; unless you're going for a toughbook, at which point...
by cspirou
Sat Jan 03, 2009 4:55 am UTC
Forum: The Help Desk
Topic: xp, SATA and limited resources
Replies: 9
Views: 831

Re: xp, SATA and limited resources

Well I can't really set the cd-rom as a floppy if the xp install disk is already in it. I did get the use of another computer and I put the drivers on a usb key. Does this give me any options or am I still screwed? If the other computer has native SATA support on its motherboard then yah you could ...
by cspirou
Sat Jan 03, 2009 4:49 am UTC
Forum: Hardware
Topic: Digital vs Analog
Replies: 6
Views: 1304

Re: Digital vs Analog

Well I was referring to computers rather then TV's and stereo. I rather have a volume knob on speakers then to use the mouse to control it from the status bar. For desktops its not such a big deal because I can always get speakers and they usually have a knob. But a lot of laptops and mp3 players do...
by cspirou
Fri Jan 02, 2009 9:18 pm UTC
Forum: Hardware
Topic: Digital vs Analog
Replies: 6
Views: 1304

Digital vs Analog

The trend these days is for everything analog to go digital. Most of the time the results are better. But there's a few things where I don't like the change. The best example for me is volume control. I prefer to have a analog wheel to control the volume rather then offloading the process to softwar...

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