The almost ideal demand system (AIDS) is commonly used to study demand for agricultural commodities and groups of … commodities. Increasingly, separability has been utilized in conjunction with the AIDS to estimate conditional demand systems as … with use of the AIDS and that tests of separability with the AIDS are problematic. …

The issue of identification of the parameter α0 in the price index of the Almost Ideal Demand System (AIDS) is examined … not been able to be estimated. Assumed values are often used. In this paper, an AIDS-like model is developed with an easy …- to-calculate chain-price index that replaces the price index in the original AIDS. The model stands by itself with …

the shadow prices appears plausible in terms of its elasticities of substitution and factor demand. After obtaining the … demand for nutrient is inelastic, whereas the expenditure elasticities indicate that nutrients are normal goods. Crossprice … elasticities show that there appears to be complementarity in the demand for nutrients. This seems a logical result. …

A demand system model differentiating goods by origin is developed to examine impacts of duty drawback on U.S. orange …