The analysis is based on an integrated climatic, agronomic and economic model of grain production in the midwestern region of the U.S. The model represents a typical farm and the objective is to select an optimum combination of cultivars for four crops (maize, soybean, wheat and sorghum)...

The objective of this paper is to present a comprehensive, multi-regional trade model which includes all types of state trading enterprises (STEs) as well as other domestic and trade policies. The model is applied to measure the effects of STEs on the world wheat sector, where exports and...

We propose a regime-switching model that allows demand to respond asymmetrically to upward and downward advertising changes. With the introduction of a smooth transition function, the model features smooth rather than abrupt parameter changes between regimes. We apply the model to nonalcoholic...