Archive for the 'science feature' Category

fun with networks

Friday, October 17th, 2008

3d visualization of an ownership network. Using cuttlefish and processing.org.

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Stochastic Processes and the History of Science: From Planck to Einstein

Wednesday, September 3rd, 2008

How are the notions of randomness, i.e., stochastic processes, linked to theories in physics and what have they got to do with options pricing in economics?

How did the prevailing world view change from 1900 to 1905?

What connects the mathematicians Bachelier, Markov, Kolmogorov, Ito to the physicists Langevin, Fokker, Planck, Einstein and the economists Black, Scholes, Merton?
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laws of nature

Tuesday, July 1st, 2008

What are Laws of Nature?

 

Regularities/structures in a highly complex universe

 

    Allow for predictions
  • Dependent on only a small set of conditions (i.e., independent of very many conditions which could possibly have an effect)

 
…but why are there laws of nature and how can these laws be discovered and understood by the human mind?
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animal intelligence

Saturday, May 17th, 2008

This is the larger lesson of animal cognition research: It humbles us.

We are not alone in our ability to invent or plan or to contemplate ourselves—or even to plot and lie.

Many scientists believed animals were incapable of any thought. They were simply machines, robots programmed to react to stimuli but lacking the ability to think or feel.

We’re glimpsing intelligence throughout the animal kingdom.


Betsy
Copyright Vincent J. Musi, National Geographic
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output…

Tuesday, April 22nd, 2008

complex networks

Wednesday, December 19th, 2007

The study of complex networks was sparked at the end of the 90s with two seminal papers, describing their universal:

  • small-worlds property [1],
  • and scale-free nature [2] (see also this older post: scaling laws).
weighted network

unweighted network

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swarm theory

Saturday, July 28th, 2007

National Geographic`s July 2007 edition: Swarm Theory

A single ant or bee isn’t smart, but their colonies are. The study of swarm intelligence is providing insights that can help humans manage complex systems.

benford’s law

Tuesday, July 24th, 2007

In 1881 a result was published, based on the observation that the first pages of logarithm books, used at that time to perform calculations, were much more worn than the other pages. The conclusion was that computations of numbers that started with 1 were performed more often than others: if d denotes the first digit of a number the probability of its appearance is equal to log(d + 1).
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