Atsushi Ohyama

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A low molecular weight type of atypical bovine spongiform encephalopathy (L-BSE) was transmitted to two cynomolgus macaques by intracerebral inoculation of a brain homogenate of cattle with atypical BSE detected in Japan. They developed neurological signs and symptoms at 19 or 20 months post-inoculation and were euthanized 6 months after the onset of total(More)
  • Serguey Braguinsky, Roger Myerson, Fernando Alvarez, Robert E Lucas, Atsushi Ohyama, Vitaly Shvydko +2 others
  • 2003
We consider a dynamic model of an economy where productive capital can be owned only by the members of an elite oligarchy, because property rights and contracts are effectively enforced only by their private political networks. This private protection entails a degree of ownership security that is good but not perfect. We find that the performance of the(More)
  • Yoshinori Kurokawa, Jiaren Pang, Yao Tang, Kenneth Chan, Rachel Connelly, Deb De-Graff +28 others
  • 2015
We construct a dynamic Ricardian model with a nominal exchange rate and trade costs. The model predicts that the nominal wages of the trading countries exhibit stronger positive comovements when the countries fix their bilateral exchange rates, while comovements of real wages are not affected by exchange rate regimes. Our numerical experiments suggest that(More)
Our main data source is plant-level data collected annually by Japan's prefectural governments. The collection of these data started in 1899, and until 1911 they were brought together and published nationally in a single source, the Statistical Yearbook of the Ministry of Agriculture and Commerce (Noshokomu Tokei Nempo). Even though the national government(More)
This paper proposes a theory according to which one's capability to deal with uncertainty arising from the adoption of new technology is a key determinant of value creation in entrepreneurship. In a unified conceptual framework, we demonstrate that entrepreneurs possessing sufficiently high skills in and knowledge about advanced technology earn a positive(More)
Our center is the first ISO9001:2000(2008)-certified cell processing center in Japan. We provide assistance to prepare standard operation procedure (SOP) and offer on-the-job training for cell processing/manipulating procedures and that for quality assurance at the center. 1. Development of innovative techniques for quality assurance of cell products 2.(More)
We propose a theoretical model linking the openness of an economy to rates of innovation and technology diffusion in its developing industries. Openness to foreign trade affects the size of the market faced by domestic industries and therefore affects the optimal level of investment in innovation and efforts to prevent knowledge spillovers. We show that(More)
Chicago Economics and Legal Organization workshop for helpful comments. All remaining errors are ours. Abstract This paper presents a model of technological cooperation between firms in infant industries that was inspired by the spectacular growth of the Japanese cotton spinning industry beginning in the 1880s. Information sharing accelerates diffusion of(More)
A unilateral intravitreal inoculation of herpes simplex virus type 1 (HSV-1) induced bilateral retinitis and encephalitis in the rat. Immunohistochemistry was employed to clarify the pathway of transmission of HSV-1 from the inoculated eye to the contralateral eye, and to identify localization of the viral antigen in the retina, optic nerve and brain. At an(More)