An Economic-Linear Programming Model of the U.S. Petroleum Refining Industry
美国石油炼制行业的经济—线性规划模型AI 解读 ↓
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美国石油炼制行业的经济—线性规划模型AI 解读 ↓
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The linking of statistically estimated relationships with an engineering linear programming model offers important potentials for simulation and forecasting models of industries. This article describes such a model of the U.S. petroleum refining industry. Econometric techniques are used to specify product demands, prices, and some technical adjustments. A linear programming specification of the production function, assuming cost minimization, determines crude oil input requirements, the output of by-products, and the utilization of capacity. As applications of the model, a sample period calculation and a five-year forecast are presented along with a discussion of alternative cases and forecast error.
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时期总生育率预测:微观动态新古典生育模型的时间序列性质
"This article demonstrates the value of microdata for understanding the effect of wages on life cycle fertility dynamics. Conventional estimates of neoclassical economic fertility models obtained from linear aggregate time series regressions are widely criticized for being nonrobust when adjusted for serial correlation. Moreover, the forecasting power of these aggregative neoclassical models has been shown to be inferior when compared with conventional time series models…
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