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Sep 16, 20082

Misunderstanding Math

Tags: Education, Math

The strange looks combined with the gasps of horror are starting to get to me. I thought that after all these years I was getting used to it, but it happened again at a recent conference.  At Stanford, no less.  I had made the mistake in public company of mentioning how much I loved math and getting kids excited about it through WISE.  “Really?  Uhmm, that’s nice,” they said just before wandering off to refresh their drinks.

Mar 24, 20081

Data Visualization for US Politics

Tags: Graphics, Math, Politics

With the end of the primary season coming up this summer, I expect a resurgence of the talk about "red and blue states" that dominated the 2004 election as we approach the direct engagement of the Republican and Democratic parties. This morning, I stumbled on a great site by Michael Gastner, Cosma Shalizi, and Mark Newman from the University of Michigan that uses very nice cartographic representations of the last election results to better visualize the electorate. Popular publications such as USA today published many maps of this sort showing the winner's party by county. But this graphical representation fails to take into account either the population density, electoral votes by county, or how close the vote was. If you process the map topology and scale each county to represent electoral votes, and color the vote results as a continuous scale from red to blue with even results represented as a mixed color of purple, the result is much more interesting. Rather than the stark red/blue divide of the trivial map above, a more representative view of our nation deemphasizes sparsely-populated geographies with little economic impact and highlights those regions driving tomorrow's economy. We also look like a much ...

Feb 17, 20080

New WISE Web Site Launched

Tags: Education, Math, Science, Technology

Hi all,We just launched the new web site for the Westminster Institute for Science Education [W.I.S.E.]. Click on the logo below to check it out, including the links to the student and teacher blogs. Comments and suggestions welcome!Oh yes, and for any of you wealthy philanthropists or corporate titans with a hankering to invest in nationwide science, math, or technology education reform, donations are encouraged! Just email or message me, or post a comment here on "All the Best Bits."

Jan 9, 20080

Politicians Speaking in Code

Tags: Math, Politics

Who says encryption is only for mathematicians, geeks, or credit card transactions?Generally, I am used to politicians dodging questions they are asked while trying to "stay on message" to push their specific agenda. But there seems to be a new trend in political communication of sending "secret" messages to core constituent groups that are very strategically and specifically encoded or worded so as to not put-off others outside of that core group. Otherwise they might otherwise seek alternative candidates if directly confronted with an open message. And I really do mean code, as in encrypted messages that only those who have, or figure out, the appropriate key can understand. My favorite recent example was pointed out to me by Josh Marshal and his blog readers.One of Mike Huckabee's core campaign messages this season is that he thinks America needs "Vertical Politics" rather than "Horizontal Politics," and a "Vertical Thinker" for its next President. Here are a couple of examples from his speeches and his web site.Being reasonably well-informed politically, this sort of verbiage didn't even register with me as anything unusual or even noteworthy. It didn't appear to me as anything more than a ...

May 25, 20070

A Mathematical Mazda

Tags: Humor, Math

Check out the model number on this bad boy.Yes, it's Pi to 27 digits. From techEblog.

Dec 17, 20061

Aphabetical Bias ,or What’s In a Surname?

Tags: Economics, Math

Judging by a recent paper from the Journal of Economic Perspectives, it would appear that I stand in good stead if I ever want a job in economics accedemia, and I have my father to thank for it.And no, it's not just because he was such a great dad and taught me how to fend for myself and all. Not that he didn't help set me on numerous paths of opportunity. He did indeed. But one step would appear to have accrued simply from sticking with the country's naming tradition.A paper entitled "What's in a Surname? The Effect of Surname Initials on Academic Success" by Liran Einav and Leeat Yariv (of Stanford and Caltech)showed some rather comprehensive data that showed measurable advantage to those with names starting with letters earlier in the Alphabet.The more elite the selection criteria, the more the bias was evident. Check out the paper.In retrospect, I can remember that just through the happenstance of my last name, I usually ended up first in or second in line whenever a class was organized, and got to start projects earlier than most. Maybe that sort of things add up. So all you teachers ...

Dec 3, 20062

Star Wars Origami

Tags: Humor, Math

One of my favorite technical books from a couple of years ago was this textbook by Robert Lang on the mathematics and symmetry properties of paper and origami.But there was just that something that was missing. The models were so..., well..., so traditionally Asian that I had trouble connecting with them culturally. NOW, however, there is hope, for the Force is with us all. Phillip West has folded a set of Star Wars Origami models. Enjoy.

Oct 26, 20061

Diet For Energy Independence

Tags: Health, Math

In a paper scheduled to appear in the Engineering Economist, Laura McLay and Sheldon Jacobsen have determined that growing obesity across the US is imposing even more of an economic impact than the often-reported health care costs of treating its side effects such as type 2 Diabetes.It should come as no surprise to anyone with any Physics background at all that it takes more energy to move more mass around. "The obesity rate among U.S. adults doubled from 1987 to 2003, from about 15% to more than 30%. Also, the average weight for American men was 191 pounds in 2002 and 164 pounds for women, about 25 pounds heavier than in 1960, government figures show."Using those weight figured combined with statistics on 2003 driving habits, it is pretty straightforward to conclude that about 39 million gallons of additional fuel are used each year for every pound of average weight increase across the US.So relative to our svelte 1960 profiles, at a gas price of $3.00 per gallon the US is consuming around an extra $3 billion of oil for automotive fuel a year simply because we are getting fatter. And then there's the issue of airline fuel costs ...

Oct 26, 20061

The Economic Value of Education

Tags: Education, Math

A government report based on data from the Census Bureau has determined that a bachelor's degree is worth about $23,000 a year, with college graduates earning and average of $51,554 in 2004 compared with $28,645 for those with only a high school diploma. If you carry that yearly salary difference through retirement age, you end up with a total difference of about $1.2M.High School dropouts earned an average of $19,169 a year, and those with advanced college degrees earned an average of $78,093.So high school is worth about $502,000College is worth an incremental $1.2MGraduate school is worth another $1.4MIt seems like a no-brainer to me, specially when you consider some of my buddies who have turned what they learned into economic engines worth billions of dollars as an up-side. Of course there is a down side, but according to the large-scale statistics, even Joe-average is best served staying in school a little longer.

Oct 24, 20061

Where There’s Math, There’s Fire

Tags: Art, Graphics, Math

I'm always on the lookout for a good screensaver. And mathematically-defined flames just seem too good to pass up. These tasty little bits of eye candy are based on the work of Michael Barnsley from Georgia Tech (One of my freshman calculus instructors, incidentally) who invented Iteratted Function System fractals, which were used by Scott Draves in 1992 to make artificial flames. These examples were made by rajah, and you can see many more examples and animations here and here.Now you can go and make your own artificial flames with a freeware application called Apophysis that runs on the Windows operating system. Donwload it here. If you'd just like to check out some animations and images, look here.

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