منابع مشابه
The Possible Effect of Steroids on Home-Run Production
36 IN A RECENT paper entitled “On the Potential of a Chemical Bonds: Possible Effects of Steroids on Home Run Production in Baseball,”1 physicist Roger Tobin develops a systematic analysis showing how performance-enhancing drugs (PEDs) taken by an already highly skilled player could produce a dramatic increase in home-run production. Tobin starts by looking statistically at home-run production ...
متن کاملHome with Mom: The Effects of Stay-at-Home Parents on Children's Long-Run Educational Outcomes
In 1998 the Norwegian government introduced a program that increased parents’ incentives to stay home with children under the age of three. Many eligible children had older siblings, and we investigate how this program affected long-run educational outcomes of the older siblings. Using comprehensive administrative data, we estimate a difference-in-differences model which exploits differences in...
متن کاملBig Hits
T here aren't many sports articles in the journal Science, so it was with great interest that I read " A Late Hit for Pro-Football Players " by Greg Miller (www. sciencemag.org). 3 This article is a very interesting compilation of recent research and developments in the area of sports-related concussion. The article highlights the efforts of Chris Nowinski, a former Harvard football standout wh...
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ژورنال
عنوان ژورنال: Nature Reports Stem Cells
سال: 2009
ISSN: 1754-8705
DOI: 10.1038/stemcells.2009.130