How many people in the world do research and development?

The traditional approach to comparing research and development (R&D) capacity across countries has been to compare Gross Domestic R&D expenditures (GERD). In this paper, we argue for an expansion of R&D capacity that includes people engaged in research and research and development activities (research human capital density, RHCD). To achieve this goal, we first discuss how to estimate counts of researchers and create a measure of researcher human capital density within a country.

Advancing biomedical science through investments in elite training.

How can governments invest in the public good of science in a way that accelerates advancement and encourages innovation at the frontier of science-all the while acknowledging that investing in science means investing in scientists? The Ruth L. Kirschstein National Research Service Award (NRSA) program is a research-training program administered by the National Institutes of Health (NIH) that makes such investments. This study examines the impact of NRSA postdoctoral fellowships on subsequent career outcomes using NIH administrative records on applicants for the fellowship from 1996 to 2008.

A comparison of perineal stapled prolapse resection and the Altemeier procedure at 2 Canadian academic hospitals.

Background: The preferred perineal repair method for full-thickness rectal prolapse is the Altemeier procedure, a perineal proctosigmoidectomy with handsewn anastomosis. A recently described variant of this procedure combines the resection and anastomosis into 1 step by means of linear and transverse stapling. There are few published data comparing the characteristics and outcomes of these 2 approaches.

Associations Between State TANF Policies, Child Protective Services Involvement, And Foster Care Placement.

The Temporary Assistance for Needy Families (TANF) program, which was established in 1996 and renewed in 2005, constituted a major reform of the US welfare system. Since its renewal, few studies have examined its effects on children. We used instrumental variables, two-way fixed effects, and event studies to examine the associations between state-level TANF policies, Child Protective Services involvement, and foster care placement during the period 2004-16.