• Nuclear Engineering and Technology
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• 제50권7호
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• pp.1168-1172
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• 2018

This study went beyond making an indicator simply based on theoretical arguments, and explored a wide spectrum of different types of perceptions about energy safety to make a concept of energy safety for the Korean society. The energy safety schemata of people can be divided into three types. Type1 is concern about multi-level risks-responsibility-centric, type2 is concern about security and personal burden-expertise-centric, and type3 is concern about health and personal burden-responsibility-centric. Questions were designed on the basis of the characteristics, differences and commonalities of the three types of perceptions, explored through the Q methodology, and Koreans' perception of nuclear safety was examined. Based on the results of this research the following components of trust in nuclear safety were derived, risk perception, responsibility, honesty, expertise and procedural justification. The items for specifically evaluating them were developed, and factor analysis was conducted, and as a result, the validity of each item was proven. The components of the nuclear safety trust indicator do not exist independently, but influence each other continuously through interactions. For this reason, rather than focusing on any one of them, laws and systems must be improved first so that they can move together in one big frame.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2011년도 제37회 추계학술대회논문집
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• pp.850-853
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• 2011

우주발사체에 사용하는 극저온 밸브용 위치지시기는 높은 신뢰성과 정확성을 가져야 한다. 극저온 환경에 노출되는 만큼 습기나 외부오염 등 환경 요인에 영향을 받지 않고 밸브의 상태를 측정하여야 한다. 이러한 요구조건을 만족할 수 있도록 영구자석과 리드스위치를 활용한 위치지시기를 개발하였다. 영구자석과 리드스위치의 특성을 분석하고 극저온 환경에 적용할 수 있는 부품을 선정하였다. 그리고 밸브 개폐 정보를 정확하게 측정할 수 있도록 부품의 형상과 위치를 고려하였다. 최종적으로 밸브 시제품에 적용하여 시험을 통해 설계 변수의 타당성을 검증하였다.

• 한국염색가공학회지
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• 제32권4호
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• pp.255-264
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• 2020

With the development of synthetic dyes, excellent dyeing properties and massive production became possible. On the other hand, natural dyeing technology has gradually disappeared. However, the international environmental and human safety requirements of the apparel and textile industry are increasing, and there is a growing interest in safer and more environmentally friendly products. Accordingly, the public's interest in natural dyeing is increasing. To meet these demands, it is first necessary to clarify the stages of production and distribution of natural dyes. It is necessary to evaluate whether the product is a natural dye product and study the suitability of the natural dye product through qualitative and quantitative assessment of the indicator components of the natural dye. Typical of three natural dyes did qualitative and quantitative analysis by HPLC-DAD and HPLC-MS. Products dyed using natural dye three products were analyzed, and the presence or absence of detection of each indicator components was confirmed to confirm whether the product was dyed using natural dyes.

• 한국약용작물학회지
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• 제26권3호
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• pp.227-232
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• 2018

Background: Angelica gigas Nakai is a perennial herb belonging to the family Umbelliferae. Its roots are utilized in traditional medicine. The aim of this study was to increase the yield of and the content of two indicator components (decursin and decursinol angelate) in A. gigas Nakai. Methods and Results: The roots of A. gigas Nakai were harvested 4-times from late August to late October in 2017. Two agents (trace element-TE, and plant hormone-HM) were applied 4 times at intervals of 2 weeks. The content of the two indicator components were analyzed by high performance liquid chromatography. The HM treatment showed the greatest increase in underground part yield and root diameter. The content of the two indicator components in the control (non-treatment) group was the highest in the underground part, but was higher in the aerial parts in the agent treatment group. After treatment with the agents, the content of the indicator components tended to decrease in the underground part. However, the total content of the indicator components in the two agent treatment groups exceeded the level of 6% set by the Korean Pharmacopoeia. Conclusions: The highest underground part yield was found in the HM treatment group, while the highest content of decursin and decursinol angelate were found in the control group. This study provides basic information for yield improvement in A. gigas.

• 한국경영과학회지
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• 제27권2호
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• pp.123-152
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• 2002

This study establishes key success Predictors of internet venture enterprises in Korea. The five factors are derived from the relevant literature and clarified the concept of entrepreneurship, industrial level, enterprise strategy, organizational capability, and resource procurement by distinguishing between its components and determinants. Organizational performance indicators were derived from the previous studies classifying by financial performance indicator and non-financial performance indicator using by recent evaluation method as BSC (Balanced Scorecard). We then examine the impact of critical success factors on the internet venture performance. Hypotheses on five factors of internet venture were tested for 103 organizations. Results indicate that critical success factors may serve as key predictors. Organizational strategy and resource capability was found to be positively influenced on both financial performance indicator and non-financial performance indicator while entrepreneurship, industrial level and organizational capability positively affected only non-financial performance indicator.

• 응용통계연구
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• 제24권5호
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• pp.745-758
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• 2011

An Economic Sentiment Indicator(ESI) is a composite indicator of business survey indices(BSI) and consumer survey indices(CSI). The ESI designed to reflect economic agents' (this includes producers and consumers) overall perceptions of economic activity in a one-dimensional index. The European Commission has published an ESI since 1985. This paper demonstrates the construction of an ESI for the Korean economy. The BSI and CSI components (having a high correlation and a leading feature with respect to GDP) are selected to construct the ESI and they are aggregated using a weighted average and then scaled to have a long-term average of 100 and a standard deviation of 10. Thus values greater than 100 indicate an above-average economic sentiment and vice versa. The newly constructed Korean ESI that extends to January 2003 shows a good tracking performance of GDP and adequately reflects the overall perception of economic activity.

• Structural Engineering and Mechanics
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• 제91권4호
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• pp.369-382
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• 2024

The earthquake loss assessment framework of ductile reinforced concrete (or RC) frame using component-performance -based methodology was studied in this paper. The elasto-plastic rotation angle was used as the damage indicator of structural component, and the damage-to-loss model was proposed on the basis of the deformation indicator of structural component. Dynamic instability during incremental dynamic analysis was taken as collapse criterion, and column failure was taken as criterion that structure has to be demolished. Expected earthquake losses of low-rise, mid-rise and high-rise RC frames were discussed. The expected earthquake loss encompassed collapse loss, demolition loss and repair loss. Furthermore, component groups of RC frame were divided into structural components, nonstructural components and rugged components. The results indicate that ductile RC frame is more likely to be demolished than collapse, especially in low-rise and mid-rise RC frames. Furthermore, the less collapse margin ratio the structure has, the more demolition probability the structure will suffer under rare earthquake. The demolition share of total earthquake loss might be more prominent than repair share and collapse share in ductile RC frame.

• 지질공학
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• 제16권4호
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• pp.393-402
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• 2006

본 논문에서는 점오염원 형태의 유류누출이 발생되었던 실트질 토양층에서 BTEX와 TPH 성분의 오염특성이 연구되었다. TPH 성분의 토양오염기준별 초과율은 BTEX 성분에 비해 $1.5{\sim}1.7$ 배정도 높았다. BTEX와 TPH 성분의 채취지점별 평균과 최대값은 B-zone>A-zone>C-zone의 순이며, 두 성분 모두 지표면하 $1{\sim}2m$구간에서 오염농도가 가장 높게 나타났다. 오염원에서 수리경사 하부 방향으로 120m와 80m 이내인 지역에서는 BTEX와 TPH 농도가 이격거리에 따라 증가하였으며, 120 m 이상 이격된 지역에서는 토양오염기순 이하인 것으로 나타났다. BTEX와 TPH 성분에 대한 지시크리깅의 제한값으로는 토양오염 확인기준, 우려기준 및 대책기준 값이 적용되었다. 지시변환된 자료의 베리오그램 분석에 의하면, BTEX와 TPH성분 모두 선형모델이 가장 적합한 것으로 나타났다. 선형모델을 적용한 BTEX와 TPH 성분의 확률도에서 토양오염 확인기준과 우려기준의 오염 범위는 유사하게 나타났으나, 대책기준의 오염 범위는 매우 축소되었다. 토양오염 확인기준, 우려기준 및 대책기준에 의해 작성된 확률도에서 BTEX와 TPH 성분의 최대 오염 확률은 BTEX성분이 26%, 26% 및 13%, TPH 성분은 44%, 38% 및 26%인 것으로 추정되었다.

• 성인간호학회지
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• 제13권1호
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• pp.29-39
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• 2001

The purpose of this study was to identify factors influencing patient satisfaction and to evaluate the utility of patient satisfaction as an outcome indicator. The study was conducted by mailed questionnaire. The subjects were 900 patients discharged from adult nursing units in a tertiary teaching hospital. On the discharge date, questionnaires were distributed by two trained research assistants. The questionnaire developed by the researchers was based on Larson(1996)'s study, and consisted of 71 items with the following components: overall satisfaction, domain-specific satisfaction(administration process, hospital facility and environment, nurses, and doctors), patients' loyalty(intention to use the health care service of the hospital in the future), recommendation to others, health benefits, and demographic characteristics. Each item was rated using a five point Likert scale ranging from '1=strongly disagree' to '5= strongly agree'. The response rate was 43%(387/900). The satisfaction level with the health care service was generally high. Perceived health status was the only significant factor influencing satisfaction level. Satisfaction with doctors contributed the most to explaining overall satisfaction. Overall satisfaction was significantly correlated with patient loyalty, recommendation, to other and perceived health benefit. It was found that the score of satisfaction was positively correlated with the score of loyalty, recommendation, and health benefit. Therefore, patient satisfaction seems to be a good outcome indicator.

• 생태와환경
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• 제56권4호
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• pp.393-405
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• 2023

This study was conducted to select indicators for assessing national biodiversity. For this purpose, 140 biodiversity-related indicators were identified as a result of inventorying biodiversity-related indicators used in Korea and abroad, and when these indicators were applied to the pressure, status, and response indicator system, it was found that status indicators accounted for the largest number of indicators, with 29 pressure, 59 status, and 44 response. We also categorized the status indicators into genes, species, habitat, function, and quality, and found that species and habitat indicators accounted for the majority. Pressure indicators were categorized into direct exploitation, pollution, alien species, climate change, and habitat change. As a result, it was found that direct exploitation and pollution accounted for most of the pressure indicators. In addition, this study used internationally used indicator selection criteria to establish criteria for selecting domestic biodiversity assessment indicators. Using this list of indicators and indicator selection criteria, we evaluated the prioritization of domestically applicable biodiversity indicators through relevant expert consultations. 1) Vegetation class, 2) Land cover indicators, and 3) Change of protected area ranked highly. In fact, these indicators have been used in many studies due to the availability of assessable data. However, most of the highly scored indicators are based on ecosystem area, and further consideration of ecosystem functions and components(species) is needed.