North-South Trades and Growth Miracles

This paper proposes a two-country 'economic' model (in the sense that it contains utility and profit maximization motives), in which a low-income economy enjoys a high growth rate relative to a high-income economy, thanks to importing technologies (or 'machines') invented in the high- income economy. Following Romer (1990), the growth of an economy is sustained by increasing varieties of inputs; while a high-income economy (and a closed economy) should invest in R&D to invent new inputs (or 'machines'), an open, low-income economy may trade with the high-income economy to import them, which reduces the cost of productivity advances. The model can generate the growth paths of the U.S. and the South Korea.International Trade, Technological Progress, Growth

Institutional Foundations for Economic Growth

A low-income economy tends to start catching up to advanced economies by adopting available useful knowledge from foreign economies after it conducts a certain form of institutional change. I argue that this institutional change is the one which enforces international interactions mainly by promoting manufacturing exports. It is not necessarily just to open up the economy to international trade. The Northeast Asian economies need to further promote the diffusions of knowledge, but as they further catch up other advanced economies, it will be increasingly important to construct an institution that protects patents, intellectual properties, and other useful ideas, so that research and development activities are encouraged as a fundamental source of economic growth. An international market to trade the knowledge needs to be further developed

Institutional Foundations for Economic Growth

A low-income economy tends to start catching up to advanced economies by adopting available useful knowledge from foreign economies after it conducts a certain form of institutional change. I argue that this institutional change is the one which enforces international interactions mainly by promoting manufacturing exports. It is not necessarily just to open up the economy to international trade. The Northeast Asian economies need to further promote the diffusions of knowledge, but as they further catch up other advanced economies, it will be increasingly important to construct an institution that protects patents, intellectual properties, and other useful ideas, so that research and development activities are encouraged as a fundamental source of economic growth. An international market to trade the knowledge needs to be further developed

Chronic Pelvic Paragonimiasis: Radiological Findings

Two cases of ectopic paragonimiasis involving pelvic peritoneal cavity and omentum were confirmed surgically and pathologically, The lesions were manifested as nodules of faintly calcified periphery on various imaging modalities. Ectopic paragonimiasis should be included in the differential diagnosis of nodular calcifications in the pelvic cavity

Angiomyofibroblastoma-Like Tumor of the Scrotum

Various tumors can occur in the scrotum. Of them, angiomyofibroblastoma-like tumors are very rare mesenchymal tumors. Angiomyofibroblastoma-like tumors cannot be easily differentially diagnosed from other malignant tumors invading the male genital tract on the basis of clinical characteristics and imaging study. Therefore, surgical removal and a histopathologic diagnosis must also be performed