The recent behaviour of the U.S. economy poses two conundrums: short-term interest rates are much lower than would normally be expected, and the yield curve is flat. These suggest to many European observers that U.S. economic prospects are not as rosy as often depicted. In particular, deficits...

This study conducts an investigation on the application of classical unit-root tests using parametric tests (the augmented Dickey-Fuller, 1979 – ADF), and nonparametric tests (Phillips and Perron, 1988—PP) to corn and soybean yields in the Delta states using county-level data from 1961 to...

In the research area of crop yield density estimation and in particular in risk analysis, little emphasis has been given to the appropriateness of transformation methods (e.g., removing a linear trend) and how such transformations impact the reliability of the empirical distribution functions...