Science Engineering Indicators

数据，趋势和分析美国和国际科学与工程。

The Science and Engineering Indicators (SEI) App for tablets makes the flagship Science and Engineering Indicators report from the National Science Board mobile. SEI is essential for policymakers, researchers, journalists, or anyone in search of high-quality, policy-neutral data, trends, and analysis on the U.S. and international science and engineering enterprise. Now at your fingertips, SEI is easy to navigate, bookmark, and share.