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김기복 ( Ki-bok Kim ),노희영 ( Hee-young No ) 한국미용예술경영학회 2011 미용예술경영연구 Vol.5 No.3
As the modern society develops and the importance of lifestyle increases, the service provision of wedding industry is recognized as a necessary item, so that it fits the structure and personality of product and the emotion of customers. Especially because wedding service is recognized as one of the most important events in their lives for the customers, various efforts should be made to increase the satisfaction of the customers. Because it also includes all items, such as a wedding dress, photographs, make up, hair styling, wedding hall, home furnishing, honeymoon destination, etc. commercializing and strategical providing the service are expected to be the cornerstone for the development of wedding industry. Furthermore, considering that the size of domestic wedding industry is significant, and the Southeast Asian countries, such as Vietnam, are interested in the domestic wedding industry, the reorganization of the wedding service at this point will become the foundation for the further development of the wedding service industry.
김기복(Ki-Bok Kim),이복희(Bok-Hee Lee),조정현(Jeong-Hyeon Joe) 한국조명·전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.9
뇌전류와 같이 고주파성분을 함유한 서지전류나 전자통신기기의 전자기장해를 유발하는 고주파 이상전류에 대하여 접지전극은 주파수에 의존적인 상당히 복합적인 임피던스의 특성을 보인다. 접지전극의 접지임피던스는 접지전극의 크기를 증가시켜도 낮아지지 않고, 대지의 특성과 주파수 조건에 따라 접지임피던스가 최소값을 보이는 접지전극의 길이가 존재하며, 이 접지전극의 길이를 대지의 특성과 주파수 조건에 대한 임계길이라 정의한다. 본 논문에서는 분포정수회로모델을 이용하여 수직접지전극과 수평접지전극의 임계길이를 산정하였으며, 실험결과와의 비교를 통해 타당성을 확인하였다. For the surge currents like lightning currents containing high frequency components and the abnormal currents having high frequencies which cause the EMI(Electromagnetic interference) problems for the electronic devices and communication instruments, the linear grounding electrodes have the significantly composite impedance characteristics which are dependent on the frequency of the applied current. The impedance of a grounding electrode is not lowered by expanding the dimension of the grounding electrode, and the length of grounding electrode having the minimum value of the grounding impedance for each condition of frequency and soil characteristics is existent, and it is defined as Critical length. In this paper, the critical lengths for the vertically and horizontally-buried grounding electrodes are calculated by using the distributed parameter circuit model. The propriety of the simulations has been confirmed by comparing the simulated results with the measured results.