• 한국환경과학회지
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• 제7권4호
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• pp.167-472
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• 1998

The washout on Incision cliff is a serious problem. Incision cliff if not carefully done, can contribute to soil erosion md, by removing covering plants could have a large impact on the temporary of normally the quality of water Because the washout of soil is influenced by its surface, it is necessary to prevent or diminish soul particle by plantation of grass species. Kumerowia stipujacea Is an useful species that diminish the injury of soil and rainwater We study that estimates of preventing soul erosion and river over-flow can be obtained from the experimental model developmented by several equators. Many potential contaminants are removed by filtration as the water moves slowly through the fields of K. supulacea.

• 원자력산업
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• 제35권7호
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• pp.57-61
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• 2015

원전업계에서는 원전의 신규 건설 계획들이 무산되고 있는 이유를 재정적인 문제 탓으로 돌리면서, 이제는 그 희망을 소형 원자로 분야와 기후 변화에 대처하기 위해 원전에 우호적인 쪽으로 에너지정책을 수정할지도 모른다는 점, 그리고 개발도상국들의 원전 건설 등에 걸고 있는 듯하다.

• 원자력산업
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• 제35권6호
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• pp.50-53
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• 2015

현재 세계 원자력 발전 산업의 무게 중심은 동아시아로 옮겨졌다. 공통적으로 대도시들을 가지고 있는 중국, 일본, 한국, 그리고 대만은 화석연료에 대한 의존율을 낮추기 위해 원자력 에너지를 사용하고 있지만 각국의 원전프로그램 사이에는 적지 않은 차이점이 존재하고 있다.

• 원자력산업
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• 제36권3호
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• pp.58-61
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• 2016

지난해 12월 기후변화협약 당사국총회에서 기후 변화 문제에 대한 국제적인 합의를 이룬 것을 두고 전 세계 에너지산업계는 역사적인 이정표를 세운 쾌거라고 환영하였다. 그런데 이번 합의는 원전산업에 과연 어떤 의미가 있는 것일까?

• 한국문화재보존과학회:학술대회논문집
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• 한국문화재보존과학회 2003년도 제17회 학술대회 발표 논문집
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• pp.36-37
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• 2003

• 원자력산업
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• 제35권4호
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• pp.58-62
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• 2015

재생 에너지의 출현과 소형, 복합 가스 발전 설비의 증가로 인해 전력 계통망(파워그리드)은 한층 더 복잡해지고 있다. 전통적인 발전소들이 그 동안 전력 시장에서 감당해 오던 역할을 계속 차지할 것인지 불투명한 현 상황에서 볼 때 원자력발전소들은 변함없이 경쟁력을 유지할 수 있도록 적응해 나갈 필요가 있다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.15-16
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• 2011

• 한국관광식음료학회지:관광식음료경영연구
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• 제13권2호
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• pp.207-221
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• 2002

Wolaksan is a national park which has beautiful scenery with exposed rocks. The mountain is 1097 meters high and has 3 tops which are Jungang(the center), Arae(the lower part), Jjokduri. The highest point of the vertical cliff is 150m from the earth and the total circumferences of three tops is about 4km. These tops are easy to break by grains because they are from sedimentary rocks. Wolaksan is a bad mountain because the area is a Mosikjuk rocky area. However, the area around Wolaksan is thicky wooded and has many achievements and it makes good scenery. From top to southeastern, there are vertical cliff, The tops are originally from one but these are divided by partial weathering corrosion. The slide of path to Wolaksan is about 70。. The lower part of the mountain from Shinroksa to top has a gentle slope but there are a steep slope from the middle. Especially, the area has many rocks. The rocks of Wolaksan are almost granitic-gneiss or metamorphic rocks so it often fall down. Because of these fallen rocks, its valleys have great landscapes. The size of rock is less than 60cm. The landscapes of valleys such as Songgye, Dukju, Yonghwa are the main natural tourism resources.

• Coupled systems mechanics
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• 제2권1호
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• pp.53-83
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• 2013

Sea waves induce significant pressures on coastal surfaces, especially on rocky vertical cliffs or breakwater structures (Peregrine 2003). In the present work, this hydrodynamic pressure is considered as the excitation acting on a piezoelectric material sheet, installed on a vertical cliff, and connected to an external electric circuit (on land). The whole hydro/piezo/electric system is modeled in the context of linear wave theory. The piezoelectric elements are assumed to be small plates, possibly of stack configuration, under a specific wiring. They are connected with an external circuit, modeled by a complex impedance, as usually happens in preliminary studies (Liang and Liao 2011). The piezoelectric elements are subjected to thickness-mode vibrations under the influence of incident harmonic water waves. Full, kinematic and dynamic, coupling is implemented along the water-solid interface, using propagation and evanescent modes (Athanassoulis and Belibassakis 1999). For most energetically interesting conditions the long-wave theory is valid, making the effect of evanescent modes negligible, and permitting us to calculate a closed-form solution for the efficiency of the energy harvesting system. It is found that the efficiency is dependent on two dimensionless hydro/piezo/electric parameters, and may become significant (as high as 30 - 50%) for appropriate combinations of parameter values, which, however, corresponds to exotically flexible piezoelectric materials. The existence or the possibility of constructing such kind of materials formulates a question to material scientists.

• 여성건강간호학회지
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• 제14권1호
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• pp.44-55
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• 2008

Purpose: This study was done to assess the personal experiences of the coping process during pregnancy for single mothers. Methods: The participants were 17 single mothers who had stayed in a social welfare facility. Data was collected with an in-depth unstructured interview. Data analysis was done by the grounded theory method. Results: One-hundred twelve concepts and 49 sub-categories were confirmed in the analysis. The sub-categories were grouped into 19 categories; escape from a miserable family, wrong meeting, openness of sex, defenseless state of pregnancy, inevitable result of pregnancy, heartbreak by herself, closure, isolation, difficult situation of being alone, stigma, supporting & protecting, helplessness, seeking, empowering, feeling of loss, conflict, facing issues, assuring a fresh start and becoming-mature. "Being driven over the edge of a cliff" was the key phenomenon which the single mothers experienced during the process of pregnancy. Conclusion: The above results will help nurses assessing single pregnancy mothers' needs and developing a nursing intervention program for supporting them. Therefore, nurses will be able to stop them from "being driven over the edge of cliff". A more vigorous nursing intervention is suggested for the research of the vulnerable classes of medical health care including single pregnant mothers.