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Mathematical Modeling

Market exchange rules responsible for wealth concentration, physicists say

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TechAndComputer (Mar. 7, 2012) — Two Brazilian physicists have shown that wealth concentration invariably stems from a particular type of market exchange rules -- where agents cannot receive more income than their own capital. The authors concluded that maximum inequalities ensue from free markets, which are governed by such seemingly fair rules.

This study, published in European Physical Journal B, was conducted by J. Roberto Iglesias and Rita de Almeida from the Brazilian National Institute of Science and Technology of Complex Systems, based in Porto Alegre. This Brazilian city is famous for hosting the World Social Forum, which is designed to find alternatives to economic liberalism.

To study free market models...

How the tiger got its stripes: Proving Turing's tiger stripe theory

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TechAndComputer (Feb. 19, 2012) — Researchers from King's College London have provided the first experimental evidence confirming a great British mathematician's theory of how biological patterns such as tiger stripes or leopard spots are formed.

The study, funded by the Medical Research Council and published online in Nature Genetics, not only demonstrates a mechanism which is likely to be widely relevant in vertebrate development, but also provides confidence that chemicals...

Motherhood 'detrimental' to women's scientific careers, study concludes

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TechAndComputer (Feb. 14, 2012) — Women with advanced degrees in math-intensive academic fields drop out of fast-track research careers primarily because they want children – not because their performance is devalued or they are shortchanged during interviewing and hiring, according to a new study at Cornell University.

“Motherhood – and the policies that make it incompatible with a tenure-track research career – take a toll on women that is detrimental to their...

An economic analysis of emerald ash borer management options

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TechAndComputer (Feb. 9, 2012) — Lanham, MD; February 9, 2012 -- The emerald ash borer, Agrilus planipennis (Fairmaire), an invasive insect from Asia which was first found in the U.S. in the 1990s, has since spread to 15 states and is responsible for the deaths of millions of ash trees. This insect has the potentionl to kill billions more trees and to do several billions of dollars worth of damage.

In "Economic Analysis of Emerald Ash Borer Management Options," a recent study...

Storm warning: Financial tsunami heading this way

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TechAndComputer (Feb. 9, 2012) — In today's global village, national coffers are more interconnected than ever before. And as the current economic crisis has proven, a downturn in one country can travel in a wave across the globe, like a financial tsunami. Now, researchers from Tel Aviv University, in collaboration with the Kiel Institute of World Economy in Germany, have developed a market "seismograph" -- a new methodology that measures the interconnections between stock markets across...