确定情形下的货币、利率与内生经济增长

通过对消费和资本投入施加预付现金约束，在内生经济增长框架（AK模型）下建立了一个封闭的货币经济体，并构建了以利率为核心的分析框架。研究表明，在确定情形下，利率的改变会影响代理人的消费与投资，并进而对价格和经济总体的消费与投资产生影响，货币当局可以通过利率以间接控制货币供给；当货币供给变化时，经济总体的消费与投资等变量也会发生变化，货币不是中性的；通过比较最优利率政策与Friedman法则，发现两者惟一的区别仅在于最初期利率的不同。

Money, Interest Rate and Endogenous Economic Growth under a Certain Situation

This paper develops an interest rate based framework and provides other perspectives for researches on relationship between money and its growth as well as its optimal quantity. Under the certain situation, changes of interest rate will affect price, economic consumption and investment through changing agents＇ consumption and investment. Therefore, monetary authority can control money supply by interest rate. Economic consumption and investment are changed when money supply changes; and money is not neutral. Comparing optimal interest rate with the Friedman rule, we find the only difference is the interest rate of first period.