Category Archives: Uncategorized

Longevity and telomere length

Came across a New Scientist article last week about the findings from an examination of the blood and tissues of Hendrikje van Andel-Schipper after her death in 2005. Aged 115 at her death, she was at one point the oldest … Continue reading

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Peak productivity?

Its been a crazy couple of weeks leading up to the 2014 World Health Assembly (just ended). We were involved in the launch of four global reports with a substantial statistical input from us in a period of 8 days. … Continue reading

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My Erdös number drops to 4, I doubt it will go lower.

Chatting to colleagues at work the other day I boasted that my Erdös number had dropped to 5 (see previous post on this), and Dan asked what an Erdös number was. I explained, and he obviously went back to his … Continue reading

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The world is living longer but still too many premature deaths

Average global life expectancy has increased by 6 years from 1990 to 2013 and is now 73 years for females and 68 years for males. Our latest statistics report (www.who.int/gho) shows that low-income countries have made the greatest progress, with … Continue reading

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The world is getting smaller – my Erdös and Einstein numbers drop

In an earlier post (https://colinmathers.com/2014/01/26/its-a-small-world-erdos-bacon-and-other-numbers/), I described author paths that gave me an Erdös number of 6 and an Einstein number of 7. The other day I came across a comment that Kenneth Arrow, Nobel Prize Laureate in economics in … Continue reading

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H-index and age: a new criterion for success?

The H-index is a measure of scientific research output defined as the number h of publications that have been cited h times or more ( http://en.wikipedia.org/wiki/H-index). Thus an H-index of 10 indicates that 10 publications have been cited 10 times … Continue reading

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Its a small world – Erdös, Bacon and other numbers

Just for fun, mathematicians like to quote their degrees of published separation from Paul Erdös, one of the most prolific modern writers of mathematical papers (http://en.wikipedia.org/wiki/Erd%C5%91s_number). So one day when I needed a break from work, I thought I would … Continue reading

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