• JOURNAL OF ELECTRICAL WORLD
• /
• no.3 s.75
• /
• pp.63-66
• /
• 1983

• JOURNAL OF ELECTRICAL WORLD
• /
• no.6 s.19
• /
• pp.29-33
• /
• 1970

• JOURNAL OF ELECTRICAL WORLD
• /
• no.6 s.19
• /
• pp.37-40
• /
• 1970

• JOURNAL OF ELECTRICAL WORLD
• /
• s.444
• /
• pp.95-95
• /
• 2013

• JOURNAL OF ELECTRICAL WORLD
• /
• s.436
• /
• pp.80-83
• /
• 2013

• 발명특허
• /
• v.13 no.12 s.154
• /
• pp.28-29
• /
• 1988

• The Safety technology
• /
• no.175
• /
• pp.48-51
• /
• 2012

• Journal of the Korean Association of Geographic Information Studies
• /
• v.9 no.2
• /
• pp.227-238
• /
• 2006

Line density index(LDI) was developed to quantify a densely isothermal line rate as standard index in the ocean environment. Theoretical background on the LDI development process restricting index range 0 to 100 was described. And validation test was done for the LDI application condition that total line length is not greater than 1/10 of unit area. NOAA SST(Sea Surface Temperature) data were used for the experimental application of LDI in the South Sea of Korea. Using GIS, $0.1^{\circ}C$ isothermal lines were linearized as vector data form SST raster data, and unit area were built as polygon data. For the LDI calculation, spatial overlapping(line in polygon) was implemented. To analyze the effect of unit area size for the LDI distribution, two cases of unit area size were designed and descriptive statistics was calculated including performing normality test. The results showed no change of LDI's essential characteristics such as mean and normality except for the range of value, variance and standard deviation. Accordingly, it was found that complex structure of thermal front and even smaller scale of front width than unit area size could influence on the LDI distribution. Also, correlation analysis performed between LDI and difference of temperature(${\Delta}T^{\circ}C$), and horizontal thermal gradient(${\Delta}T^{\circ}C/km$) on the front was obtained from linear regression model. This obtained value was compared with the results from previous researches. Newly developed LDI can be used to compare the thermal front regions changing spatio-temporally in the ocean environment using absolute index value. It is considered to be significant to analyze the relationship between thermal front and marine environment or front and marine organisms in a quantitative approach described in this study.

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 2002.11a
• /
• pp.124-130
• /
• 2002

화재 발생 재해요인의 가장 큰 비중을 차지하는 것이 전기화재이다. 이러한 전기화재는 1991년도부터 2000년도까지 10년 동안 화재발생 1순위를 차지하고 있으며 전기기기나 전력설비사용의 증가와 함께 점점 화재건수가 증가하고 있으며 이로 인한 인명피해 및 재산피해는 물론 국가 경제에도 크나큰 손실을 주고 있으므로 이에 대한 대책요인으로 사회 전반적으로 환경보전의 움직임 추세에서 전선ㆍ케이블에 대해서도 환경에 대한 배려가 강하게 요구되어 있고, 유해 화학 물질을 사용하지 않고, 유해 폐기물을 내보내지 않는 제품을 개발하여 환경에 영향을 주는 영향을 감소하는 환경조형제품 (Environmentally Conscious Product : ECP)의 개발이 중요한 과제로 대두되고 있다.(중략)

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.11 no.6
• /
• pp.74-80
• /
• 1997

In this paper, we deal with the I -t characteristic of low voltage distribution fuse (line fuse). That fuse element has two parts;One is low temperature melting element(LTME) to put up with over current and the other is high temperature melting element (HTME) which put up with large current. Melting charateristic of fuse is determined by L TME and HTME. So we verified their properties of fuse design, mathematically, by simulating the thermal and electric characteristics of each other. We simulated the I-t characteristic of line fuse by using the numerical method;Finite Element Method(FEM). Then, we could acquire very similar result at the HTME and L TME area when compared the simlation result with experimental one.