著者
河村 真
出版者
日本経済学会
雑誌
The Economic Studies Quarterly (ISSN:0557109X)
巻号頁・発行日
vol.44, no.3, pp.269-274, 1993-09-20 (Released:2007-10-19)
参考文献数
12

This paper measures returns to density and size for Japanese public bus operations in metropolitan areas. When returns to density are increasing, bus operations enjoy scale economies, the route length fixed. When returns to sizes are increasing, bus operations, allowed to change the route length, enjoy scale economies. Translog cost function of bus operations is estimated, using 6 metropolitan bus operations' data pooled from 1980 to 1985, in order to measure the degrees of returns to density and size. The estimates of returns to density and size could be obtained, using estimated parameters of the cost function. It is observed that the returns to density is increasing, evaluated at the sample mean. The public bus operations exhibit economies of density. On the other, the returns to size are decreasing, evaluated at the sample mean. Bus operations exhibit diseconomies of size. Then, more frequent operations enable Japanesee public bus operations in metropolitan areas to enjoy scale economies, based on the estimates of returns to density and size.
著者
成田 淳司
出版者
日本経済学会
雑誌
The Economic Studies Quarterly (ISSN:0557109X)
巻号頁・発行日
vol.44, no.3, pp.275-283, 1993-09-20 (Released:2007-10-19)
参考文献数
26

It is widely held that the life cycle hypothesis of consumption is not accepted by Japanese data. In this paper, the life cycle hypothesis of consumption is tested by using Japanese cohort data instead of cross-section data. First, the earnings function of household head is estimated, and the future stream of the earnings is predicted by the function. Then, human capital is estimated. Finally, the life cycle hypothesis of consumption is proven to be accepted.
著者
北坂 真一
出版者
日本経済学会
雑誌
The Economic Studies Quarterly (ISSN:0557109X)
巻号頁・発行日
vol.44, no.2, pp.142-158, 1993-06-18 (Released:2007-10-19)
参考文献数
25

In this paper, I investigate structural change and economic fluctuations in Japan by estimating a structural VAR model including four macroeconomic variables, real GNP, the GNP deflator, money supply (M2+CD) and interest rate (call rate). The main results I obtain are as follows;(1) Structural change tests show that the structural change in the Japanese economy in the 1970's may have occurred before the first oil crisis.(2) Granger causality tests show that fluctuations in real GNP and the GNP deflator caused changes in money supply in the former period (1956:1-1969:4), but in the latter period (1970:1-1988:4), those relationships disappeared and conversely fluctuations in money supply caused changes in output.(3) Innovation accounting shows that the convergence speed of the endogenous variables to exogenous innovations, in the latter period, was slower and also the interdependency of each variable was more complicated than in the former period.
著者
福井 清一
出版者
日本経済学会
雑誌
The Economic Studies Quarterly (ISSN:0557109X)
巻号頁・発行日
vol.44, no.2, pp.159-168, 1993-06-18 (Released:2007-10-19)
参考文献数
18

The objective of this paper is to investigate the mechanism of labor force participation in Japanese farm households. For the purpose of empirical study, Tobit type 2 model is applied to the Farm Household Survey Data. The marked findings is that in the labor force participation decision of male members, the family system has an important role as well as the market wage and the farmsize, and the off-farm income of the female earner and the number of dependents are less significant.