An English version of this paper can be found at 'http://ssrn.com/abstract=2865717 ' http://ssrn.com/abstract=2865717 Japanese Abstract:...

The purpose of this paper is to develop an experimental model which links inter-institutional flow of funds to real macroeconomy and then to estimate quantitatively the effects of changing scale of postal savings or government financial institutions on GDP. The empirical analysis indicates that...