For proper valuation of risk to which the portfolio of financial assets is exposed, it is necessary to forecast the second moments of financial time series, that is variabilities. The empirical investigations show that financia time series are heteroskedastic, i.e. their volatility is not...

The Bank of Japan adopted the Quantitative Easing (QE) Policy from March 2001 to March 2006. This paper investigates whether or not this QE had an effect in stimulating real economy in Japan. The identification of policy effect in the above Japanese case enables us to evaluate indirectly the...

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...