• 한국터널지하공간학회 논문집
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• 제17권3호
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• pp.243-248
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• 2015

최근 국내에서는 도로 및 철도 터널의 건설이 꾸준히 증가하고 있으며, 교통체증 해소 및 도시계획 그리고 개량공사 등에 따라 터널이 더 깊은 지하에 위치하거나 장대화되고 있는 추세이다. 이러한 경우 터널 내부사고 중 인명피해에 가장 큰 위험요소인 화재사고가 발생할 경우 대형사고로 이어질 확률이 굉장히 높아진다. 본 연구에서는 정량적 위험도 분석 기법인 QRA(Quantitative Risk Analysis)를 터널에서의 방재설계에 적용하고자 국내 QRA 사례분석을 수행하고, QRA 기법의 적용 유무에 따른 비용 산출을 비교하였다. 그리고 AHP(Analytic Hierachy Process)기법을 사용하여 터널 방재시설의 위험도 저감 효과를 분석하여 터널 화재시 위험도를 낮출 수 있는 중요 인자들에 대한 우선순위를 제시 하였다. 그 결과로부터 QRA가 적용된 사례에서 상당한 비용절감 효과가 나타났으며, 그로 인해 합리적인 방재시설의 설계가 가능할 것으로 판단하였다. 그리고 방재시설별 비용대비 위험도 저감효과를 통한 방재시설 우선순위는 송수관설비, 비상조명, 대피통로, 제연설비의 순으로 분석되었다.

• 한국환경복원기술학회지
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• 제20권4호
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• pp.29-42
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• 2017

As the "Guidelines for GHG Environmental Assessment" was revised, it pointed out that the developers should evaluate GHG sequestration and storage of the developing site. However, the current guidelines only taking into account the quantitative reduction lost within the development site, and did not consider the qualitative decrease in the carbon sequestration capacity of forest edge produced by developments. In order to assess the quantitative and qualitative effects of vegetation carbon uptake, the CASA-NPP model and satellite image spatial-temporal fusion were used to estimate the annual net primary production in 2005 and 2015. The development projects between 2006 and 2014 were examined for evaluate quantitative changes in development site and qualitative changes in surroundings by development types. The RMSE value of the satellite image fusion results is less than 0.1 and approaches 0, and the correlation coefficient is more than 0.6, which shows relatively high prediction accuracy. The NPP estimation results range from 0 to $1335.53g\;C/m^2$ year before development and from 0 to $1333.77g\;C/m^2$ year after development. As a result of analyzing NPP reduction amount within the development area by type of forest development, the difference is not significant by type of development but it shows the lowest change in the sports facilities development. It was also found that the vegetation was most affected by the edge vegetation of industrial development. This suggests that the industrial development causes additional development in the surrounding area and indirectly influences the carbon sequestration function of edge vegetaion due to the increase of the edge and influx of disturbed species. The NPP calculation method and results presented in this study can be applied to quantitative and qualitative impact assessment of before and after development, and it can be applied to policies related to greenhouse gas in environmental impact assessment.

• 한국사회복지학
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• 제59권4호
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• pp.5-34
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• 2007

본 연구는 다중수렴모델(Multiple Convergence Model)을 적용하여 나눔교육을 통한 아동의 변화를 보다 다각적이고 심층적으로 이해해 보고자 한다. 양적 연구를 통해서는 초등학교 고학년 아동을 대상으로 친사회성 행동 향상에 초점을 두고 변화를 살펴보았으며, 질적 연구를 통해서는 나눔교육 후의 아동 변화에 대해 아동, 학부모, 교사의 시각에서 다차원적으로 변화의 내용과 의미를 분석하였다. 분석결과, 나눔교육을 받은 고학년 아동들은 친사회적 행동에서 통계적으로 유의미한 긍정적 변화가 나타났으며, 아동, 학부모, 교사의 시각에서도 그러한 변화는 확인되었다. 또한 양적 결과를 질적 결과를 통해 확증하는 수렴적 방법을 활용해 종합해 본 결과, 나눔교육이 아동에게 매우 긍정적인 의미있는 변화를 유발하는 것으로 나타났다. 이러한 결과를 바탕으로 본 연구는 나눔교육의 주요 장(주체)인 가정 학교 지역사회에서 나눔교육의 효과를 극대화시키기 위한 방안들을 논의한다. 본 연구는 '나눔교육을 통한 아동의 변화'라는 현상에 대해 포괄적 심층적 이해 제고를 위해 국내 최로로 다중수렴모델을 적용하는데, 이는 사회복지연구방법의 지평을 확대하는 효과, 즉 새로운 연구방법론 활용의 기초를 마련할 것으로 기대한다.

• 디지털융복합연구
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• 제13권12호
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• pp.325-336
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• 2015

본 연구의 목적은 평생교육에 대한 이용자의 공유기대가치 구성 요소를 융복합적 측면에서 접근, 정량적으로 확인하는데 있다. 선행연구 검토와 심층인터뷰 및 설문조사 실시 등, 2차 자료 수집과 1차 자료 수집, 그리고 정량적 정성적 방법론을 동시에 실시한 결과, 평생교육에 대한 이용자의 공유기대가치 구성요소는, 10개 관점, 27개 구성개념, 81개 측정 항목으로 정리되었다. 확인적 요인분석 결과, 잠재적 측정모델은 적합한 것으로 확인되었고, 구성요인에 대한 개념타당성, 수렴타당성, 내적일관성 및 구성 개념 간의 판별타당성 등도 적절한 것으로 나타났다. 연구결과로 정리된, 평생교육에 대한 이용자의 공유기대가치 구성요소는 융복합적 측면을 바탕으로 평생교육에 대한 이용자의 다양한 기대가치를 보여주는 바, 본 연구는 이론의 학제적 구축 측면에서, 다양한 분야로부터 평생교육에 대한 이용자의 공유 기대가치를 체계적으로 파악하는데 기여할 것으로 판단되며, 전략적 측면에서, 평생교육의 기획 관리 운영에서 이용자 욕구의 범주화 된 파악과 이에 상응하는 프로그램의 기획 개발에 기여할 것으로 판단되며, 관리적 측면에서, 평생교육 이용자의 공유기대가치에 대한 효과의 정량적 파악에 현실적인 도움을 줄 것으로 판단된다.

• 한국의류학회지
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• 제39권6호
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• pp.885-898
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• 2015

This study develops scales to measure clothing consumption values for Korean male consumers. This study conducted qualitative and quantitative research to explore a new clothing consumption value among males as well as investigate empirically the measurement of clothing consumption values. In-depth interviews and focus group interviews were collected for qualitative research on 20 Korean men in their 20s-40s who had experience with 2 types of stores in Korean men's fashion. An analysis of qualitative data based on grounded theory approaches identified 6 factors and 15 items. For the empirical research, the questionnaire which consist of 9 factors and 46 items were developed by the results of grounded theory approaches and prior studies. Final measurement scales were based on 651 data used in exploratory factor analysis (EFA) and a confirmatory factor analysis (CFA). All subjects were in their 20s-40s. The result from CFA suggested 4 factors and 18 items with showing acceptable construct validity and discriminant validity. Therefore, this study confirmed that clothing consumption value for Korean male consumer consist of ostentatious and brand value, epistemic and possession value, conditional value, and reasonable value. These constructs will provide critical insight in understanding and segmenting Korean male consumers.

• 한국사회복지학
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• 제59권3호
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• pp.229-252
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• 2007

최근 지역복지정책의 발달원인을 규명하기 위한 비교사회정책 연구들이 국 내외적으로 크게 증가하고 있다. 대부분 실증분석에 기초한 이 연구들은 방법론적 측면에서는 더욱 정교해지고 있지만, 이론적으로는 전통적인 거시 복지국가 발달이론의 틀을 그대로 적용하고 있는 상황이다. 그러나 초기산업사회라는 특정 상황을 바탕으로 발전한 복지국가 발달이론들로는 후기산업사회에서 이슈가 되고 있는 지역복지정책의 발달을 이해하는 데 한계가 있을 수 있다. 이러한 시각에서 본 연구는 지역복지정책 비교연구들이 무비판적으로 수용해온 대표적인 복지국가 발달이론들, 즉 산업화이론, 권력자원이론, 그리고 국가중심이론의 적용한계점을 논의한다. 그리고 그에 대한 대안으로서 신사회위험론, 신공공관리론 그리고 정부간 관계론의 이론적 유용성을 검토한다. 최종적으로, 지역복지정책 발달의 비교분석을 위한 새로운 이론적 틀을 제시한다.

• 환경영향평가
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• 제22권5호
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• pp.439-454
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• 2013

UN-REDD (United Nations programme on Reducing Emissions from Deforestation and forest Degradation) is currently being emerged as one of important mechanism to reduce carbon dioxide in relation to the deforestation. Although administrative boundary has already gained world-wide recognition as a typical method of monitoring unit in the process of GHG (Greenhouse Gas) reduction project, this approach did not provide a realistic evidence in the carbon sequestering monitoring in terms of UN-REDD; the meaningful comparison of land use patterns among watershed boundaries, interpretation for distribution trends of carbon density, calculation of opportunity cost, leakage management, etc. This research proposes a comparative evaluation framework in a more objective and quantitative way for carbon sequestering monitoring between administrative and watershed boundary approaches. Mt. Geumgang of North Korea was selected as a survey objective and an exhaustive and realistic comparison of carbon sequestration between the two approaches was conducted, based on change detection using TM satellite images. It was possible for drainage boundary approach to identify more detailed area-wide patterns of carbon distribution than traditional administrative one, such as estimations of state and trends, including historical trends, of land use / land cover and carbon density in the Mt. Geumgang. The distinctive changing trends in terms of carbon sequestration were specifically identified over the watershed boundary from 4.0% to 34.8% while less than 1% difference was observed in the administrative boundaries, which were resulting in almost 21-22%. It is anticipated that this research output could be used as a valuable reference to support more scientific and objective decision-making in introducing watershed boundary as carbon sequestering monitoring unit.

• 산업경영시스템학회지
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• 제42권3호
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• pp.176-183
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• 2019

The environmental changes in the Korean cosmetic medical service industry in the $21^{st}$ century are forming intense competition among medical institutions due to the quantitative expansion of its market. For stable growth of the cosmetic medical service industry, continuous quality improvement is necessary based on empirical research on the quality of cosmetic medical services rather than external expansion. The purpose of this study is to classify the quality attributes of cosmetic medical service using Kano model and to derive the degree of satisfaction and dissatisfaction of each quality attributes through Customer Satisfaction Coefficient (CSC). Through this, the study identified strategic priorities and suggested specific step-by-step approaches and quality improvement priorities that can increase customer satisfaction using the Potential Customer Satisfaction Improvement Index (PCSI Index). Based on SERVPERF, this study used measurement tools consisting of five dimensions : tangibles, reliability, responsiveness, assurance, and empathy. In addition, it was used of measurement items reconstructed into positive, negative, and satisfaction questions for Kano model analysis, CSC analysis, and PCSI Index analysis. A total of 300 medical consumers who experienced cosmetic medical services for the past one year in medical institutions such as plastic surgery and dermatology were collected with convenient sampling. As a result, urgent items for improving the quality of service using the PCSI Index, 'Consideration for customer benefits' in empathy category was followed by 'Immediate help' and 'Sincere response' in responsiveness category, and 'Understanding customer needs' in empathy category, respectively. That is, it is required to improve human service quality attributes such as empathy and responsiveness rather than physical service quality attributes. This study contributes practically in that it provides specific and discriminatory approaches to improve customer satisfaction on cosmetic medical service quality and suggests improvement priorities.

• 한국어병학회지
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• 제35권2호
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• pp.141-155
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• 2022

Rock bream iridovirus (RBIV) causes high mortality and economic losses in the rock bream (Oplegnathus fasciatus) aquaculture industry in Korea. Viral open reading frames (ORFs) expression profiling at different RBIV infection stages was investigated using microarray approaches. Rock bream were exposed to the virus and held for 7 days at 23 ℃ before the water temperature was reduced to 17 ℃. Herein, 28% mortality was observed from 24 to 35 days post infection (dpi), after which no mortality was observed until 70 dpi (end of the experiment). A total of 27 ORFs were significantly up- or down-regulated after RBIV infection. In RBIV-infected rock bream, four viral genes were expressed after 2 dpi. Most RBIV ORFs (26 genes, 96.2%) were significantly elevated between 7 and 20 dpi. Among them, 12 ORF (44.4%) transcripts reached their peak expression intensity at 15 dpi, and 14 ORFs (51.8%) were at peak expression intensity at 20 dpi. Expression levels began to decrease after 25 dpi, and 92.6% of ORFs (25 genes) were expressed below 1-fold at 70 dpi. From the microarray data, in addition to the viral infection, viral gene expression profiles were categorized into three infection stages, namely, early (2 dpi), middle (7 to 20 dpi), and recovery (25 and 70 dpi). RBIV ORFs 009R, 023R, 032L, 049L, and 056L were remarkably expressed during RBIV infection. Furthermore, six ORFs (001L, 013R, 052L, 053L, 058L, and 061L) were significantly expressed only at 20 dpi. To verify the cDNA microarray data, we performed quantitative real-time PCR, and the results were similar to that of the microarray. Our results provide novel observations on broader RBIV gene expression at different stages of infection and the development of control strategies against RBIV infection.

• 품질경영학회지
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• 제50권1호
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• pp.125-138
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• 2022

Purpose: Failure Mode and Effect Analysis (FMEA) is a widely utilized technique to measure product reliability by identifying potential failure modes. Even though FMEA techniques have been studied, the form of Risk Priority Number (RPN) used to evaluate risk priority in FMEA is still questionable because of its shortcomings. In this study, we suggest common RPN(cRPN) to resolve shortcomings of the traditional RPN and show the extensibility of cRPN. Methods: We suggest cRPN which is based on Cobb-Douglas production function, and represent the various application on weighting risk factors, weighted RPN in a mathematical way, and show the possibility of statistical approach. We also conduct numerical study to examine the difference of the traditional RPN and cRPN as well as the potential application from the analysis on marginal effects of each risk factor. Results: cRPN successfully integrates previously suggested approaches especially on the relative importance of risk factors and weighting RPN. Moreover, we analyze the effect of corrective actions in terms of econometric analysis using cRPN. Since cRPN is rely on the reliable mathematical model, there would be numerous applications using cRPN such as smart factory based on A.I. techniques. Conclusion: We propose a reliable mathematical model of RPN based on Cobb-Douglas production function. Our suggested model, cRPN, resolves various shortcomings such as consideration of the relative importance, the effect of combinations among risk factors. In addition, by adopting a reliable mathematical model, quantitative approaches are expected to be applied using cRPN. We find that cRPN can be utilized to the field of industry because it is able to be applied without modifying the entire systems or the conventional actions.