Satellite constellation has been applied in communication, reconnaissance, navigation, and other space missions, such as GPS, Glonass, Beidou ...

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International ...

This CRAN Task View contains a list of packages useful for empirical work in Finance, grouped by topic. The r pkg("parma") package provides support for portfolio ...