第二，构建了三大因素的评价指标体系，使得理论模型变得更具操作性，并为进一步的定量研究打下了基础。
Second, the paper constructs an evaluation index system of three factors, which makes the theoretical model more practical and lays the foundation for further quantitative study.
其次，第二阶段的评估决策阶段，根据回归分析所得到的影响因素以及权重系数，结合前景理论模型做出股票价值的评价。
Secondly, with the factors and the weight of the factors obtained in the regression analysis, the evaluation of the stock value based on prospect theory model is proposed.
第二章，阐述粮食产量影响因素理论分析，介绍变量和评价指标，以及模型分析方法和相关影响系数的构建思路。
Chapter One introduces the background, purpose and methodology of the research, as well as the summary of the related studies.
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