"People don't think the right way. You should be happy of getting old because the alternative is not being younger, it's being dead!"
Wednesday, May 22, 2013
Sunday, May 19, 2013
The Geometry of Sound Visualized
Turn down your speakers … but not all of the way off. Now see what sound waves look like when they’re visualized and the geometric patterns they make. A little bit of history here.
Low frequency part (at 0:40) reminds me of this fried egg city, and high frequency part (at 1:52) reminds me of Christaller's network of central places. Probably, there is already an author using complexity theory to freak out on this stuff.
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Saturday, May 18, 2013
Thursday, May 16, 2013
Assorted Links on Segregation
- The effect of segregation on economic growth
- Global and local spatial indices of urban segregation
- Some Notes on Schelling's Essay "On Letting a Computer Help with the Work
- Countering urban segregation in Brazilian cities: policy-oriented explorations using agent-based simulation
- The other great contribution of Thomas Schelling (that gave him the 2005 Nobel Prize)
- Urban segregation as a complex system: an agent-based simulation approach (by Flavia Feitosa)
- Interactive maps: How Racial Segregation Changed from 1970 to 2010 in the US ?
Wednesday, May 15, 2013
A spreadsheet to calculate congestion charge
For those interested in transport modelling and congestion pricing, here is a piece in Wired about Komanoff 's spreadsheet to calculate congestion charge. He has been working for three years now on the Balanced Transportation Analyzer, an Excel spreadsheet proposed to model every aspect of New York City transportation (I thank Fabio Storino for the pointer).
The spreadsheet is quite impressive as for the amount of input data it demands. However, I'm not familiarized with transport modelling, so I'm in no position to have an opinion on this spreadsheet. I'd rahter have some experts' opinions published in scientific journal assessing it.
ps. I confess though I asked myself: why 'Excel' ?! This is too vintage.
And here is a 15-minute video where Komanoff explains the whole idea of the project.
The spreadsheet is quite impressive as for the amount of input data it demands. However, I'm not familiarized with transport modelling, so I'm in no position to have an opinion on this spreadsheet. I'd rahter have some experts' opinions published in scientific journal assessing it.
ps. I confess though I asked myself: why 'Excel' ?! This is too vintage.
Tuesday, May 14, 2013
Monday, May 13, 2013
Chart of the Day
A nice piece on The Economist covering India’s demographic challenge.
As some studies have pointed out, the key element in discussing the so called 'demographic dividend' of a country is education, and more education. And of course, in the end, education and aging are crucial for productivity levels.
Media Exposure and Reproductive Behavior
Three papers discussing the effects of media exposure on reproductive behavior.
*A funny curious finding: "the likelihood that the twenty most popular names chosen by parents for their newborns would include one or more names of the main characters of novelas aired that year was about 33 percent if the area where parents lived received the Globo signal and only 8.5 percent if it did not."
Ferrara et al (2008). Soap Operas and Fertility: Evidence from Brazil. IDB Working Paper Nº 533 *
Chong and La Ferrara (2010). Television and divorce: Evidence from Brazilian novelas. J. European Economic Association.
Westoff and Koffman (2011). The Association of Television and Radio with Reproductive Behavior. Population and Development Review.
*A
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