• 한국임상보건과학회지
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• 제6권2호
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• pp.1156-1170
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• 2018

Purpose. This study was conducted to analyze fatigue and subjective oral health status in the employees in educational institutions and provide basic data for the development of a program for the promotion of oral health. Methods. As for the subjects, this study conducted a survey with 468 educational personnel in elementary, middle, and high schools in the Daegu-Gyeongbuk area from March through June 2016 and utilized 407 copies finally. As for the items on the survey, this study conducted an investigation on their general characteristics, fatigue, and subjective oral health status(halitosis, xerostomia, temporomandibular disorder) with the self-administered method. With the data collected, this study conducted frequency analysis, t-test, ANOVA, and multiple regression analysis, using SPSS 20.0 statistical program, and the statistical significance level was .05. Results. As a result of this study, it turned out that by sex, fatigue was higher in women(4.59 points); by the place of work, those in 'elementary school' had higher fatigue(4.59 points); and by health condition and oral health status, most of them responded that they were 'not healthy'(4.81 and 4.84 points, respectively) and there was a statistically significant difference (p<.05). As for the correlation between fatigue and subjective oral health status, there were positive(+) impacts on halitosis(=.248, p<.001), xerostomia(=.097, p<.05), and temporomandibular disorder(=.148, p<.01), so it turned out that there was a correlation between fatigue and subjective oral health status. Conclusion. Based on the result of an analysis of the impacts of the fatigue level on subjective oral health status, it is judged that it would be necessary to continue to build up a program that can promote the oral health status of the educational personnel. In addition, it is necessary to conduct studies continuously for the development and application of a program for the change in lifestyle and behavior that can lower their fatigue.

• 한국전기화학회:학술대회논문집
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• 한국전기화학회 2002년도 추계총회 및 학술발표회
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• pp.16-16
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• 2002

• 인재니움
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• 제16권1호
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• pp.23-26
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• 2009

• 전기저널
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• 6호통권90호
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• pp.5-9
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• 1984

• 전기저널
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• 2호통권74호
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• pp.10-12
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• 1983

• 전기저널
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• 11호통권83호
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• pp.4-7
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• 1983

• 전기저널
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• 8호통권104호
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• pp.30-32
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• 1985

• 한국해양학회지:바다
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• 제19권4호
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• pp.272-286
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• 2014

본 연구는 천수만에 서식하는 대형저서동물의 군집구조를 파악하고, 건강도를 평가하는데 목적이 있다. 천수만 해역에서는 총 224종/$5.2m^2$과 1,940개체/$m^2$의 대형저서동물이 출현하였고, 다모류가 111종(평균 $22{\pm}11$종)과 31,525 개체(평균 $1,213{\pm}1,080$개체/$m^2$)의 밀도를 나타내 가장 우점하는 생물이었다. 천수만의 주요 우점종은 이매패류의 아기반투명조개(Theora fragilis), 다모류의 Heteromastus filiformis, 긴자락송곳갯지렁이(Lumbrineris longifolia), Mediomastus californiensis 및 옆새우류의 Eriopisella schellensis 등이었다. 출현 종의 개체수 자료를 기초로 다변량분석(집괴분석과 다차원배열법)을 실시한 결과, 천수만 해역의 대형저서동물 군집은 크게 2개의 그룹(죽도를 중심으로 만의 안쪽해역 정점군과 만의 입구부해역 정점군)과 2개의 정점(춘계와 하계의 정점 2)으로 구분되었다. 한편 천수만의 건강도를 평가하기 위하여 Benthic Pollution Index(BPI)와 ATZI's Marine Biotic Index(AMBI)지수를 이용하였다. 조사기간 동안 BPI지수는 11(bad status, 가장 불량한 상태)~92(high status, 가장 양호한 상태)의 범위를, AMBI는 1.34(good status, 양호한 상태)~4.39(poor status, 불량한 상태)의 범위를 나타내었다. 결론적으로 천수만은 건강도 지수의 평균 값에 있어 BPI와 AMBI지수가 각각 중간 상태(moderate status, 불량과 양호한 상태의 전이단계)와 양호한 상태를 반영하고 있었다.

• KEPCO Journal on Electric Power and Energy
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• 제3권2호
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• pp.119-125
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• 2017

Regarding the implementation of ROMM project (Rehabilitation, Operation, Maintenance & Management), which is one of overseas development projects, it is very important to diagnose the exact current status of aged thermal power plant. However, when people visit the power plant for the purpose of prediagnosis to implement the ROMM project, most target power plants for diagnosis, in general, are under operation. This can be a big interference factor to diagnose the exact current status of power plants. Therefore, in order to solve such interference factor, based on the 30 years of know-how in the field, the present study has developed a regression curve for a simple life time assessment and the calculation of rehabilitation cost that may be used as a reference relatively for the quantitative diagnosis on the status of a relevant power plant even during the operation of the power plant.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.614-615
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• 2008

This paper describes the status of advanced technologies and technical analysis for development of Korean next generation maglev. The propulsion systems of worldwide maglev and research status of Korean maglev have been represented.