This paper explores the structure and function of the intra-firm trade network in Mitsubishi Corporation (Mitsubishi Shoji) from 1928 to 1936. In this period, Mitsubishi Co. substantially expanded its global branch network. Using original documents of Mitsubishi Co., we obtained the data on the...

This paper estimates the contribution of R&D spillovers to productivity growth Japanese manufacturing industry by estimating two alternative measures of productivity growth and two different types of R&D spillovers. The results suggest that TFP growth is affected neither by rent R&D spillovers...

Behind rising natural rate of unemployment, they often point out the decline in matching efficiency of the labor market. We empirically examine the cause of matching friction based on the theory of directed search model such as Burdett, Shi and Wright (2001). From rich micro data on vacancy size...