• International Journal of Advanced Culture Technology
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• v.9 no.3
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• pp.68-73
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• 2021

The 'Good School Uniform' development project was conducted in consultation with Gyeonggi-do and the Gyeonggi Provincial Office of Education. The aim is to find various ways to supply school uniforms reflecting the latest trends at low prices using high-quality textile materials produced in Gyeonggi-do. From 2015, when the 'Good School Uniform' development project started, to the present, various events and fairs are making great progress. However, there are several problems in actually wearing each middle and high school student. In order to satisfy the characteristics of each school and the satisfaction of parents and students together, it is necessary to not only conduct practical research such as closer customer satisfaction surveys, industry-academia-research networks, expert interviews, and surveys, but also several supplements such as consultations between practitioners. There are many domestic studies on the development of school uniform design, but the research on the revitalization plan according to the free school uniform support is very insufficient. Moreover, it is not easy to find recent studies on the development of 'Good School Uniforms'. This study intends to study how to build a system so that the Gyeonggi-do 'Good School Uniform' development project can be used as a role model. In addition, it is expected that this study will be used as basic data for building a nationwide system such as public brand development and collaboration with small domestic companies.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.24 no.4
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• pp.317-323
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• 2014

This study is concerned with the free vibration analysis of an inextensible uniform rope with a spring-mass system at the tip. The rope is hanged vertically in a gravitational field. This problem is related to the free vibration of an elevator rope connected to an elevator cage. The equation of motion and the corresponding boundary conditions are derived by using the Hamilton's principle. The general solution of the governing equation of motion is expressed in terms of Bessel functions. The characteristic equation was derived by applying the boundary conditions. The characteristic values which are in fact non-dimensionalized natural frequencies were obtained numerically. The effects of mass and spring constant were investigated. The numerical results show how the tip mass and spring affect the natural frequencies of the rope.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.05a
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• pp.227-230
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• 2007

The expansion of open education and the 7th revision of educational curriculum have brought big changes in the school facilities. In response to the integrated curriculum for the first and second grades of elementary school, various plans, such as open classroom, expanded classroom size, and the installation of multi-purpose space, have been attempted. However, such plans have appeared in the form of an open classroom--a uniform spatial composition. As a result, a plan for unit learning space to support the educational curriculum and activities for low grade levels is still insufficient. In the case of advanced countries, a lot of studies on space are being actively conducted to develop the creativity of children and to facilitate free-style learning, and such space is actually applied to a real educational environment. Therefore, this study will analyze the spatial composition of unit learning space for low grade level elementary schools in Korea. From the cases of advanced countries, a more concrete proposal will be suggested to diversify unit learning space for low grade levels.

• Membrane Journal
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• v.24 no.5
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• pp.375-385
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• 2014

NaA zeolite/${\alpha}$-alumina composite membranes were hydrothermally synthesized at $100^{\circ}C$ for 24 hr by using nanosize seed of 100 nm in diameter and an ${\alpha}$-alumina support of $0.1{\mu}m$ in pore diameter, and then effect of seed coating layer on the microstructure of NaA zeolite separation layer was systematically investigated. In cases when nanosize seed was coated with a monolayer, increment in seed coverage induced small grained and thick NaA zeolite separation layer. On the other hand, in case when nanosize seed was coated with a multilayer, much small grained and thick separation layer was formed. It was clear that an uniform monolayer seed coating is required to grow hydrothermally a thin and defect-free NaA zeolite separation layer. In the present study, it was clearly announced that seed coating layer is a key factor to determine the microstructure of NaA zeolite layer, secondary grown on a porous support.