• Proceedings of the Earthquake Engineering Society of Korea Conference
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• 1998.10a
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• pp.391-398
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• 1998

To understand the current seismic activity and regional tectonic status in and around Gyeongsang basin, Korea Institute of Geology, Mining, and Materials(KIGAM) has performed the earthquake monitoring around the Gyeongsang basin since early 1980's with portable analog seismic instruments for about two months every year. As a part of POSEIDON project, Korea-Japan joint observation around gyeongsang basin in 1991 and 1992, was performed using by temporary seismic station. KIGAM has been continuously operated nine short-period 3-components digital seismic stations since the end of 1994. During the observation period, 247 earthquakes were analyzed and their magnitude was less than 4.5. In general, we could not find any relationship between seismic activity and known surface geological features. But the epicenters were rather concentrated with NW-SE direction. The most active seismicity was found in Gyeongbuk Gyeongjugun Seokeupri and Hyodongri, and Yeongilgun Janggiri and Guryongpo in land, and in three region along the east coast which are 10km and 30km east off from Gampo and 30km east off from Jongja in offshore.

• Bulletin of the Korean Chemical Society
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• v.30 no.4
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• pp.821-824
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• 2009

In this study, a hydrogenated lecithin-containing nanoemulsion was prepared from hydrogenated lecithin and silicone oil. Tween-60 and liquid paraffin, widely known emulsifiers, were used as standard substances, and high shear was produced by utilizing a high shear homogenizer and microfluidizer. The properties of the nanoemulsion prepared with hydrogenated lecithin were evaluated by measuring interfacial tension, dynamic interfacial tension, droplet size, zeta-potential, friction force, skin surface hygrometery, and dermal safety. The interfacial tension of lecinol S10/silicone oil was lower than that of lecinol S10/liquid paraffin. The nanoemulsion prepared from hydrogenated lecithin shows lower zeta-potential, skin surface hygrometery, and friction force compared with a general emulsion. The silicone nanoemulsion prepared from hydrogenated lecithin showed a zero value in the patch test and thus exhibits high dermal safety.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.11a
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• pp.163-164
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• 2007

This plan for the Medical and Information Technology University which is built by the will and support of Korea at the small county Kingdom of Swaziland in Africa. As we consider the essential condition of self-supporting of nation is the education for the poor country in culturally and socially. The establish the University in the downtown is a significant work in socially and culturally as the urban infrastructure. Besides, this is presenting the master plan not only educational institution purpose but the place for the desirable communication between regional resident in educational and cultural circumstances. It is the main concept for this plan that flexible arrangement of the lower stories buildings on the gentle hill according to the geographic features of the field, road situation, supporting equipment, construction ability and Building materials.

• Journal of Korean Institute of Industrial Engineers
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• v.25 no.4
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• pp.476-489
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• 1999

This paper is concerned with the deployment of core technologies for automotive steel sheets, based on the structural change of global market. The main tasks of automotive industry are to ensure the energy consumption, environmental regulations, and driving safety. With social and legal requirements, this study analyzes the market creation processes with technological innovations for hot rolled, cold rolled and galvanized steel sheets during the 20th century. It has been proven that the leading country in the steel industry was also that in the automotive. The purchaser-supplier relations of sheet materials are then patternized in the regional markets of the United States and Japan, who share nearly 50% of market in the world. According to the paradigm shift of globalization, the balance of power in Porter's 5 forces has been moved to the buyers', and both industries pursue Win-Win strategies such as the PNGV(Partnership for a New Generation of Vehicles ) and design-in system with the competition.

• Journal of the Korean Institute of Landscape Architecture
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• v.23 no.2
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• pp.63-70
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• 1995

This study is executed to find out necessities of park & open space management, its policy, its administrational structure, and personnel management. To get objective and basic materials for this study, conscious structure of practical level members in Seoul is analyzed by means of questionnaire sheet and ANOVA analysis. It is important to consider various related factors ; quality upgrading of management of park & open space, improvement of productivity, intensification of user service, and orientation of self administration. As a result, we should restructure the park system and policy in order to enhance recognition toward the necessities of park & open space. And we could suggest regional specialization of district autonomy area as an alternative strategy.

• Journal of The Korea Institute of Healthcare Architecture
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• v.14 no.3
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• pp.35-42
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• 2008

The purpose of this study is to provide the fundamental materials for architectural planning of the Multipurpose Senior Center according to regional characteristics, and to analyze the Multipurpose Senior Center at the view of the program and utilization. For the analysis of the actual condition are surveyed 164 respondents und programs in four facilities in Deajeon. The results of this study are as follows; 1. the characteristics, problems and demands of the section of social education, the counseling, the medical rehabilitation, the sports education, etc. 2. the consideration factors for the planning of the program and volume of the Multipurpose Senior Center on the basic of the rate of increase in population of the Elderly in regions.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.10a
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• pp.90-95
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• 2005

Tradition is defined as cultural qualities of a regional social group a race, which is transmitted from generation to generation through history. The purpose of this study is grasp of the tendencies of expressional methods of korean traditionality in contemporary korean interior design. Therefore, this study analyzed expressional methods of korean traditionality according to observing the cognitive activities in design process of korean primary designer's works. As a result, it seem that expressional methods of korean traditionality using a traditional space construct and properties of materials.

• Transactions on Electrical and Electronic Materials
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• v.17 no.4
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• pp.231-234
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• 2016

The AC insulation breakdown voltage was investigated for seven types of winding coils made of polyamideimide (PAI), flexural PAI (nanosilica 5 wt%) and anti-corona PAI (nanosilica 15 wt%) wires with various winding coil diameters of φ5, φ15 and φ25 mm. The winding coil was made of enameled wire with an enamel thickness of 30~50 μm, and the rectangular copper wire had a thickness of 0.77~ to 0.83 mm and width of 1.17~ to 1.23 mm, respectively. The insulation breakdown voltages of the original PAI coils with diameters of φ5, φ15 and φ25 mm were 7.30, 6.58, and 5.95 kV, respectively, and those values decreased as the winding coil diameter increased, regardless of the wire types.

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.1144-1149
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• 2006

Electric power is generated by Seeback Effect if there is thermal difference in pettier module. Peltier module is composed by alumina, Bi-Te semiconductor and insulation (or air). If load is increased in pettier module, the alumina of module will be destroyed. One of the preventing method of module destruction is using damper between module and heat source. But the electric Power is dropped because of decrease of thermal difference, if thermal conductivity of damper was tourer than other thermoelectric materials. We design, Polymer Pad for enhancing thermoelectric porter. As the result of these experiment, Polymer Pad is more superior than the Rubber in the stability and thermal conduction.

• Transactions of Materials Processing
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• v.30 no.5
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• pp.236-241
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• 2021

This study describes the cold stamping process design procedure to secure the formability and dimensional accuracy of the automotive structural component fabricated by 1.5GPa grade ultra-high strength steel sheet. The target product is selected as the front side rear lower member which is the most important energy absorption part in the frontal impact condition. To secure the product quality, an intermediate product shape is added while considering the low elongation and high strength characteristics of 1470Mart. The sequential optimization procedure of the intermediate product shape, the fine dimensional quality is then achieved without any crack or wrinkling. The cold stamping method with ultra-high strength steel sheets is validated by conducting the die tryout of the front side rear lower member.