Applied Mathematics John Gilbert. Google and the Random Surfer An important page is one that lots of important pages point to. Start at any web page and.

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Presentation transcript:

Applied Mathematics John Gilbert

Google and the Random Surfer An important page is one that lots of important pages point to. Start at any web page and follow links at random. Forever. You’ll see “important” pages more often than unimportant ones. How does Google figure out which web pages are most important?

Analyzing the Web with graphs and matrices Graph nodes are web pages Arrows between nodes are links between web pages Matrix entries are links from “column” pages to “row” pages The Page Rank comes from algebra on the matrix The matrix has 8,058,044,651 rows & columns ( as of yesterday ) Graph Matrix

Applied mathematicians use mathematics to solve problems in physics, biology, medicine, economics, engineering, technology, and more. Sometimes they also call themselves  Computer scientists  Numerical analysts  Computational biologists / physicists / engineers / …  Just “mathematicians”

What kind of problems do they solve? How does an enzyme fold up into a particular shape? How can you predict the spread of a forest fire depending on weather, ground cover, and type of trees? How can you get more data through the Internet faster? How would disease spread after a bioterrorism attack? How can you make an animated movie more realistic? How much would global warming be reduced if all cars used fuel cells instead of gasoline? How could you design a more fuel-efficient airplane?

F-117A Stealth Fighter 1981 B-2 Stealth Bomber 1993 The difference: Better math, better computing

Where do applied mathematicians work? Universities Government laboratories Big companies Startup companies Wall Street …and lots of others

So, what do they get paid? There is a very wide range! University salaries in Computer Science (2003 Taulbee Survey) :  figures are for 9 months/year, not counting summer. Assistant professor  lowest: $48,269; median: $76,392; highest: $124,542. Full professor  lowest: $52,200; median: $107,670; highest: $280,786. Industry and government labs tend to pay a little bit more.

How do you get into this field anyway? Middle school and high school:  Math, science, English (!!!) College  Learn about everything!  Especially math, science, computing. Graduate school  Master’s degree  Ph.D.

Tell me again why you think this is fun? Applied mathematicians usually work in teams, with all kinds of scientists and engineers and other interesting people. Mathematics helps to solve a lot of their problems! You never know what kind of things you’ll get to learn about and work on...

PolyBot: A Modular, Reconfigurable Robot Instead of one complicated robot, why not make hundreds of simple ones?

Pointers to applied mathematics for students April is Math Awareness Month! Mathematics and the Cosmos: Society for Industrial and Applied Math info on careers: MAA Math career profiles: me: John Gilbert,