Structural Change in Factor Demand Relationships in the U.S. Food and Kindred Products Industry
使用多元渐进切换回归和贝叶斯推断方法，分析美国食品制造业要素需求关系的结构变化，发现1980年起发生显著渐进变化，原材料和能源需求弹性增大，劳动需求弹性减小，且要素间替代性增强。
Abstract This analysis utilizes multivariate gradual switching regression techniques and Bayesian inferential procedures to evaluate structural change in factor demand relationships in the food manufacturing industry. Food materials are included as an input into the food manufacturing industry. The results confirm a significant gradual structural change that initiated in 1980. Price elasticities indicate that the demands for raw food materials and energy have become more elastic while the demand for labor has become less elastic. Morishima elasticities of substitution indicate that nearly all factors are substitutes and that the degree of substitutability has significantly increased in recent years.