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A WELFARE ANALYSIS OF CHILD LABOR RESTRICTION: INTERGENERATIONAL PERSPECTIVES
KUNIO TSUYUHARA 중앙대학교 경제연구소 2014 Journal of Economic Development Vol.39 No.3
I analyze the welfare implications of child labor restriction using an overlapping generations model with two-sided altruism. Efficient allocation of child time generally results in a positive level of child labor. Without a policy intervention, the steady state consists of an inefficiently high level of child labor because each generation discounts the value of the other generations’ schooling more than the social optimal. A moderate restriction of child labor always improves future generations’ welfare, but may lower the current adult generation’s welfare. In general, the current adult generation always prefers less stringent restriction than the future generations, and an intergenerational conflict arises in terms of a policy intervention.
Kunio Tada,Joo-Hyong Noh,Taro Arakawa,Tatsuya Suzuki 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.45 No.2
The ve-layer asymmetric coupled quantum well (FACQW) is a specic quantum well structure with tailored potential distribution. Electrorefractive characteristics and fabrication of the FACQW structures and their application to compact, ultrafast, and low operation voltage optical modulators and switches are investigated. Through numerical analyses, it is predicted that the FACQWs will have a giant electrorefractive sensitivity as large as 0.0004 cm/kV in the wide transparency wavelength region far from the absorption edge. If this eect is fully utilized in Mach-Zehnder modulators and switches, compact and ultrafast devices with very low driving voltages and very wide wavelength ranges will become possible.