South Korea raised the nation-wide minimum wage substantially over the past two years (2018 and 2019), and the minimum wage rose from 53 percent of the median wage to 63 percent. While the minimum wage has been increasing steadily over the decades, the rapid pace was largely unexpected and...

Recently, Korea has upgraded the luminance standard of classrooms and started to introduce the air-conditioning system in order to enhance pleasantness of the learning environment. In addition, as use of auxiliary equipment, such as TV, VTR and computer, is increasing and due to school meals,...