But more than that, he criticises them for their concentration on dry analysis.

ECONOMIST: Management education

Economists argue about the disincentive effects of higher tax rates. (Messrs Piketty and Saez, the economists who have transformed analysis of income concentration at the top, reckon, controversially, that the optimal top income-tax rate could be as high as 80%.) But no one doubts that there are trade-offs.

ECONOMIST: Policy prescriptions

"Additional documentation indicates he refused to submit to a chemical analysis to determine alcohol concentration or presence of an impairing substance at the time of the citation, " the company said.

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Brandes also provides some more in-depth analysis of emerging market fund concentration.

FORBES: Emerging Markets Offer Diversification, But Not Through ETFs

The first is a spectrographic analysis, which showed that the star had a much higher concentration of lithium than would be expected.

FORBES: Astronomers Discover A Star That May Have Destroyed Its Own Planet

Tests are then done to determine the pH and concentration of the sample to ensure the suitability and integrity of the samples for analysis.

BBC: The drug-busters