Foreign Technology Acquisition Policy and Firm Performance in Japan, 1957-1970: The Japanese Industrial Policy Revisited (Published in "International Journal of Industrial Organization", Sep2005, Vol. 23 Issue 7/8, p563-586. )

We examine the cause and effect of technology acquisition policy on firm performance, using firm-level data between 1957 and 1970. Our results indicate that in the technology acquisition licensing, the government screened a firm's application, based on (i) the industry that the firm belonged to and (ii) firm's sales ranking in the industry. As a result, large but inefficient firms tended to acquire more technologies before the deregulation. Despite such screening process, the technology acquisition policy did not result in a serious failure. The firms that acquired technology grew much faster than those did not during the regulation period.

"Industrial Policy Cuts Two Ways: Evidence from Cotton Spinning Firms in Japan, 1956-1964"

A number of studies have revealed that the effect of industrial policy on productivity growth is negative. Is this because industrial policy fails to control the activities of firms, or because it can effectively control them? This paper attempts to answer these questions, using firm-level data from the cotton spinning industry in Japan for the period 1956-64. It has been determined that industrial policy cut two ways during this period. Industrial policy effectively controlled the output of cotton spinning firms, which contributed to the establishment of a stable market structure during the period. On the flip side, such policy constrained the reallocation of resources from less productive large firms to more productive small firms. Combined with the negative productivity growth of large firms during this period, industrial policy resulted in negative industry productivity growth.

Industrial Policy Cuts Two Ways: Evidence from Cotton Spinning Firms in Japan, 1956-1964

A number of studies have revealed that the effect of industrial policy on productivity growth is negative. Is this because industrial policy fails to control the activities of firms, or because it can effectively control them? This paper attempts to answer these questions, using firm-level data from the cotton spinning industry in Japan for the period 1956-64. It has been determined that industrial policy cut two ways during this period. Industrial policy effectively controlled the output of cotton spinning firms, which contributed to the establishment of a stable market structure during the period. On the flip side, such policy constrained the reallocation of resources from less productive large firms to more productive small firms. Combined with the negative productivity growth in large firms during this period, industrial policy resulted in negative industry productivity growth.

Photoemission study of poly(dA)-poly(dT) DNA : Experimental and theoretical approach to the electronic density of states

We present results of an ultraviolet photoemission spectroscopy study of artificially synthesized poly(dA)-poly(dT) DNA molecules on $p$-type Si substrates. For comparison, we also present the electronic density of states (DOS) calculated using an \emph{ab initio} tight-binding method based on density-functional theory (DFT). Good agreement was obtained between experiment and theory. The spectra of DNA networks on the Si substrate showed that the Fermi level of the substrate is located in the middle of the band gap of DNA. The spectra of thick ($\sim 70$ nm) DNA films showed a downward shift of $\sim 2$ eV compared to the network samples.Comment: 4 pages, 4 figure

Photo-excitation band-structure engineering of 2H-NbSe2_2 probed by time- and angle-resolved photoemission spectroscopy

We investigated the nonequilibrium electronic structure of 2H-NbSe$_2$ by time- and angle-resolved photoemission spectroscopy. We find that the band structure is distinctively modulated by strong photo-excitation, as indicated by the unusual increase in the photoelectron intensities around E$_F$. In order to gain insight into the observed photo-induced electronic state, we performed DFT calculations with modulated lattice structures, and found that the variation of the Se height from the Nb layer results in a significant change in the effective mass and band gap energy. We further study the momentum-dependent carrier dynamics. The results suggest that the relaxation is faster at the K-centered Fermi surface than at the $\Gamma$-centered Fermi surface, which can be attributed to the stronger electron-lattice coupling at the K-centered Fermi surface. Our demonstration of band structure engineering suggests a new role for light as a tool for controlling the functionalities of solid-state materials.Comment: 7 pages, 5 figure