著者
Song Min Yeong Seo Yujeong Kim Yeon Soo Kim Hee Dong An Ho-Myoung Park Bae Ho Sung Yun Mo Kim Tae Geun
出版者
The Japan Society of Applied Physics
雑誌
Applied Physics Express (ISSN:18820778)
巻号頁・発行日
vol.5, no.9, pp.91202-091202-3, 2012-09-25
被引用文献数
20

The authors report a silicon-based one-diode--type resistive-switching memory (RRAM) device with self-rectifying properties and high electrical properties. The RRAM cell consisted of Al/Cr--SrTiO3/Si and revealed intrinsic diode properties, so that unwanted sneaky currents could be removed from an RRAM crossbar array without extra switching devices. The insulator--metal transition property of the proposed device was explained using the space-charge--limited conduction mechanism. The memory device showed good characteristics including high ON/OFF ratio ({\sim}10^{6}), low reset current ({\sim}10^{-11} A), high speed at low voltage (200 ns, 2 V), and reasonable endurance ({>}10^{4} cycles) and retention characteristics ({>}10^{4} s).
著者
Breisinger Clements Yokogawa Hiroshi Song Min
出版者
Faculty of Agriculture, Kyushu University
雑誌
九州大学大学院農学研究院紀要 (ISSN:00236152)
巻号頁・発行日
vol.47, no.2, pp.503-531, 2003-02-01

The Japanese rice market is an extreme example of national market protection in an industrialsed country. As a consequence of these proyrctionist policies, domestic prices average almost 4 times the world market price for comparable rice qualities. This paper discusses the obstacles on the way to political reform and to more openness of the rice trade. With the framework of a partial equilibrium model we quantify the benefits that can be expected by exhensive trade liberalisation and show that the Japanese consumer and rice producers in developing countries largely carry the burden of the current system that only conserves the highly inefficient Japanese rice farming structure. Our analysis shows that the current policies are economically not the best means to address the objectives taegeted by the "New agricultural policy" of Japan that promotes mainly food security, multifunctional aspects of agriculture and the parity of rural- urban income distribution. On the contrary, the Japanese rice policy appers to use these arguments only as oretence to justify its protectionist interventions. As an alternative, we develop an example for the conversion to a direct payment system that targets the political objectives directly and improves the competitiveness of the production in Japan.