2008-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/696454摘要：本計畫將研究經濟體系分別在完全預期，近視預期及調整性預期下的動態行為。結果顯示在疊代模型加入具有生產性的公共支出會增加代表經濟體系的動態系統的維度。在完全預期和近視預期時，經濟體系可以被一個二維度的動態系統所表示。但是在調整性預期下，經濟體系是被一個三維度的動態系統所表示。因為高維度的動態系統的研究較為困難和抽象，我所採用的分析方法是利用一個低維度的動態系統來逼近高維度的動態系統，並藉此研究複雜動態行為發生的可能性。<br> Abstract: I will construct an overlapping generations model with capital accumulation and productive public expenditures under perfect foresight, myopic expectations and adaptive expectations. I show that considering productive public expenditures in the model will increase the dimension of the dynamical system. The economy under perfect foresight and myopic expectations can be represented by a two-dimensional dynamical system. However, the economy under myopic expectations is represented by a three-dimensional dynamical system. To study the dynamic behavior of a high-dimensional dynamical system, I plan to approximate it by using a low-dimensional dynamical system.貨幣持有模型混沌動態預期持續偏好。Cash-in-advance economyChaosExpectationPersistent habits.