Search found 30 matches

by CrazyIvan
Sat Jan 23, 2010 7:15 am UTC
Forum: School
Topic: Tips on applying for summer REUs and other research?
Replies: 4
Views: 1308

Re: Tips on applying for summer REUs and other research?

Hey all, I'm a sophomore physics major looking to apply to some summer REUs or other programs oriented towards research (NASA and DOE programs in addition to NSF REUs, I guess). I was wondering what people's experiences with these applications were, and if they had any advice on personal statements...
by CrazyIvan
Sat Jan 23, 2010 7:02 am UTC
Forum: Coding
Topic: I want to infect my systems
Replies: 41
Views: 4975

Re: I want to infect my systems

Being deliberately obtuse is not the best way ever to try to instill trust, just FYI.
by CrazyIvan
Sat Dec 12, 2009 3:24 am UTC
Forum: Mathematics
Topic: 2 dice vs. 1 die
Replies: 12
Views: 1906

Re: 2 dice vs. 1 die

There is no statistical advantage to rolling 2 dice *in this circumstance*. It might matter if you were doing addition, multiplication, etc. on the two dice results (like 3d6 usually being "add all three dice together to get 3 to 18). But a d100 is just a uniform distribution of 1 to 100 and a ...
by CrazyIvan
Sat Nov 28, 2009 11:00 pm UTC
Forum: Serious Business
Topic: Climate Gate: A Discussion
Replies: 136
Views: 18582

Re: Climate Gate: A Discussion

"I've just completed Mike's Nature trick of adding in the real temps to each series for the last 20 years (ie from 1981 onwards) amd from 1961 for Keith's to hide the decline". Does that sound like they are just being human?? Sounds fishy to me. To me, that particular code very much does....
by CrazyIvan
Tue Nov 17, 2009 8:31 pm UTC
Forum: Science
Topic: Mathematics and Biology
Replies: 46
Views: 4365

Re: Mathematics and Biology

"Oh no, we don't need to know that... that's math. Leave it to the guy helping us with the stats!" I've heard that a few times. It makes me feel all stabby. Why? The point of science collaboration is to bring together people who don't have the time or the expertise to master everything re...
by CrazyIvan
Mon Nov 16, 2009 9:36 pm UTC
Forum: Science
Topic: Mathematics and Biology
Replies: 46
Views: 4365

Re: Mathematics and Biology

You are however locking yourself out more advanced "Biology related" fields, like Mathematical Biology, Epidemiology, etc. which are fairly math intensive. Often you'll have extremely Math-oriented collaborators, but it is useful enough to understand what the hell they're talking about. F...
by CrazyIvan
Sun Nov 15, 2009 9:37 am UTC
Forum: Science
Topic: Mathematics and Biology
Replies: 46
Views: 4365

Re: Mathematics and Biology

Well, it depends. First, a bit of background about where I'm coming from: I was a Biology major as an undergrad at a top-tier research University, and currently I'm an Epidemiology PhD student, also at a good research University. To be frank, the field at this point is such that "Biology" ...
by CrazyIvan
Wed Oct 28, 2009 1:46 am UTC
Forum: Computer Science
Topic: Excel needs to sod off and die
Replies: 13
Views: 3685

Re: Excel needs to sod off and die

"It fit well" is a fine reason if, like the OP, all you want to do is extrapolate* the data, not understand it. (But only ceteris paribus .) *Wrote extrapolate, but apparently means interpolate. Parsimony and model building is admittedly less of a big deal with a purely predictive model, ...
by CrazyIvan
Tue Oct 20, 2009 11:23 pm UTC
Forum: Computer Science
Topic: Excel needs to sod off and die
Replies: 13
Views: 3685

Re: Excel needs to sod off and die

A good rule of thumb is you should only at max one explanatory variable for every 10 observations you have. Which means really, your data can manage a linear fit, and a second order fit is stretching. I've also never, ever seen someone give a plausible reason for a 6-order term besides "well, i...
by CrazyIvan
Tue Oct 20, 2009 11:18 pm UTC
Forum: School
Topic: Betrayed by online grades
Replies: 38
Views: 3820

Re: Betrayed by online grades

I wonder how many of the "Its lazy people" posters have ever taught...anything.

I *hate* grade obsessed students.
by CrazyIvan
Tue Sep 01, 2009 4:57 pm UTC
Forum: School
Topic: Zombies, Research, and My Senior Project
Replies: 17
Views: 2330

Re: Zombies, Research, and My Senior Project

If you want a critique of the zombie modeling paper, one can be found here: http://confoundingblog.wordpress.com/20 ... ing-model/
by CrazyIvan
Tue Jun 30, 2009 5:00 pm UTC
Forum: Mathematics
Topic: Show us your articles! Or what's your Erdos number?
Replies: 187
Views: 277851

Re: Show us your articles! Or what's your Erdos number?

Turns out my number is 4. I'm quite content with this, considering I'm an epidemiologist, not a mathematician. My articles probably aren't terribly of interest to anyone who made it this far into the thread, except maybe for this one via general interest: The untapped potential of virtual game world...
by CrazyIvan
Mon Jun 22, 2009 7:25 pm UTC
Forum: Serious Business
Topic: Misunderstandings in race based scholarship
Replies: 28
Views: 4212

Re: Misunderstandings in race based scholarship

My Dad would sometimes tell the story of a guy he knew who marked "Native Alaskan" in some sort of college application or financial aid thing. He later realized that "Native Alaskan" was probably referring to a specific racial or ethnic group. (is the term Eskimo considered dero...
by CrazyIvan
Thu Jun 04, 2009 4:03 pm UTC
Forum: Mathematics
Topic: Math Software
Replies: 143
Views: 167788

Re: Math Software

For mathematicians who are pathological liars: SAS: Huge dinosaur stats and data manipulation package, tries to be everything, only partially succeeds. Steep learning curve, Steep price. Lots of expensive add-ins. R: Like SAS, but free. Lots of free but questionably coded add-ins. Caveat emptor. SP...
by CrazyIvan
Wed Jun 03, 2009 7:47 pm UTC
Forum: General
Topic: [SAFESPACE] Woman Thread - All Things Women. Period.
Replies: 27389
Views: 3488195

Re: [SAFESPACE] Woman Thread-The thread that gives (every month)

Yeah, that one made me choke on my drink - had to look up on wikipedia what Lysol was, which made me choke some more when I realised it was household disinfectant! Apparently it was also advertised as a contraceptive (with absolutely no proper medical evidence, naturally). For extra fun, Dr. Pepper...
by CrazyIvan
Wed Jun 03, 2009 6:47 pm UTC
Forum: Science
Topic: When scientific fields cross.
Replies: 7
Views: 1303

Re: When scientific fields cross.

I'm in Epidemiology, which is an unholy union of Statistics, Biology and a good handful of social sciences. And right now I'm incorporating a non-trivial amount of math into it as well.

Good times, good times.
by CrazyIvan
Wed Jun 03, 2009 3:17 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

But still, eating less is an option. I can see how lack of options can lead to eating unhealthy food, but not how it leads to eating more/i] unhealthy food. Because hunger trumps "you'll feel better years down the line". That's part of it, the lack of options means your eating food that's...
by CrazyIvan
Wed Jun 03, 2009 3:15 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

I'll throw in my own personal anecdote to way in on the "It's the fat peoples' fault" side of things. I used to fat, obese even. Along with my brothers, and almost everyone on my dads side of the family. I had a few insulin problems and a slight thyroid error. Incredibly unhealthy. I coul...
by CrazyIvan
Wed Jun 03, 2009 3:11 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

I can see how poor people in bad neighbourhoods get less healthy food in general because of price and lack of options. But how does being poor translate directly into obesity? Just eating the same as usual, but less of it, is both cheaper and leads to less weight. If you eat small amounts of trash ...
by CrazyIvan
Wed Jun 03, 2009 3:02 pm UTC
Forum: Coding
Topic: Best Language for Mathematical Biology, and How to Learn It
Replies: 7
Views: 1400

Re: Best Language for Mathematical Biology, and How to Learn It

The OP says that MATLAB is too slow for their programs - will Python be able to improve on this? (I don't know myself, as I've never used Python). I use a Mac, and the general agreement is that MATLAB's current OS X implementation is about as inefficient as you could possibly be and still retain so...
by CrazyIvan
Wed Jun 03, 2009 2:46 am UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

First, if you don't have 15-20 minutes a day to do what you want at the moment, you should be dead from stress. Second, it isn't a matter of free time. You need to make time, just like you make time to go to work, to eat, to shower, and to sleep. ... then you can't use the argument that you can't a...
by CrazyIvan
Tue Jun 02, 2009 5:34 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

The general variation found in human weight does not account for the insanely high rates of obesity to be found in America (30% I think?) No, but it helps, as does the continual stress, largely sedentary workplaces and disruptive schedules that are the modern iteration of The American Dream (tm). I...
by CrazyIvan
Tue Jun 02, 2009 5:32 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

Armadillo Al wrote:And this thing is on the "healthy" menu. Makes you wonder what all is going into the 'high-fat' sandwiches...


It is best not to contemplate the Spicy Italian for too long.
by CrazyIvan
Tue Jun 02, 2009 3:00 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

It's not a rational choice though. Sure, once in a while, it's fine to grab a quick one. But for the exact same price (At least here in Australia) as a medium Qtr Pounder with cheese meal, you can get their chicken ceasar salad. Or a footlong of a selection of subs at Subway(or a 6 inch of any). No...
by CrazyIvan
Mon Jun 01, 2009 7:55 pm UTC
Forum: School
Topic: College recruitment letters from Ivies
Replies: 6
Views: 1413

Re: College recruitment letters from Ivies

How is it a scam? Of course not everyone is going to get in. These colleges have acceptance rates of 1 in 6 or lower. But there are plenty of smart and capable people everywhere, small schools and big ones, and of course the colleges can't determine a priori which kids will be most qualified. So, t...
by CrazyIvan
Mon Jun 01, 2009 6:38 pm UTC
Forum: Coding
Topic: Best Language for Mathematical Biology, and How to Learn It
Replies: 7
Views: 1400

Best Language for Mathematical Biology, and How to Learn It

So, generally speaking I'm an observational epidemiologist. I know my way around SAS, and have dabbled with R and STATA, but have yet to approach any of the proper programming languages with anything resembling an actual intent to learn them. But, I find myself doing a fair amount of work in computa...
by CrazyIvan
Mon Jun 01, 2009 6:29 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

Information isn't the answer. The information is out. Eating things that are bad for you make you fat and feel bad. Eating good things makes you feel good. Exercise helps you lose weight. But people don't care. They don't want the hard answer. They want solutions now, or they want someone else to f...
by CrazyIvan
Thu May 28, 2009 6:55 pm UTC
Forum: Computer Science
Topic: Wolfram|Alpha
Replies: 77
Views: 10259

Re: Wolfram|Alpha

Some interesting output, but not enough to live up to the hype, and some occasional hilarious missteps.
by CrazyIvan
Thu May 28, 2009 5:53 pm UTC
Forum: Mathematics
Topic: Dreaming up mathematical principles.
Replies: 16
Views: 2498

Re: Dreaming up mathematical principles.

generally, it's the opposite for me. I dream about something working brilliantly, wake up, and realize once again that one can never trust a dream to produce something logically sound. That's how it is for me too. I'll wake up having made some brilliant insight, think about it in the shower and the...
by CrazyIvan
Thu May 28, 2009 4:27 pm UTC
Forum: Serious Business
Topic: Why we are fat
Replies: 195
Views: 20176

Re: Why we are fat

This thread is what finally brought be out of lurking, so nice job there. A few things to consider OP: First, you are sadly now the latest target of my "Don't Use That Set of CDC Maps" crusade. I *hate* that particular set of maps, and I hope they go down in history as an utterly inappropr...

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