The service trade develops quickly in China and the scale of which is increased. The main body of China’s service trade is transportation and travel. Meanwhile, the deficit in China's balance of service trade is widened and China’ service trade lags behind the China’s goods trade and the service trade in some country. It’s important to assess the dynamic change of the comparative advantage of C...

There is a growing consensus among social scientists that research programs advance more effectively through the iterative or collaborative use of different research methods than through the use of any one method alone. Making the most of the synergies among research methods requires an understanding of the relative comparative advantages, trade-offs, and limitations of each method and an abili...

We studied several measures of the complexity of classiica-tion problems and related them to the comparative advantages of two methods for creating multiple classiier systems. Using decision trees as prototypical classiiers and bootstrapping and subspace projection as classiier generation methods, we studied a collection of 437 two-class problems from public databases. We observed strong correl...