• 제목/요약/키워드: Case Comparative Analysis

검색결과 1,162건 처리시간 0.028초

배연탈질을 위한 저온 SCR 기술 도입에 따른 시나리오별 경제성 분석 (A Study on the Economic Analysis of Low-Temperature SCR Technology for NOx Reduction by Scenarios)

  • 홍성준;이유아;정순관
    • 에너지공학
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    • 제29권2호
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    • pp.10-22
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    • 2020
  • 미세먼지 문제 해결에 대한 국민적 요구가 높아짐에 따라 정부에서는 강도 높은 미세먼지 관련 대책을 발표하고 있다. 그래서 최근에 미세먼지의 전구체 중에서 질소산화물을 제거하기 위한 배연탈질기술로서 선택적 촉매환원법(SCR)이 주목받고 있다. 본 연구에서는 미세먼지 관련 정부정책과 시장 및 기술개발 현황을 조사하고, SCR 기술이 산업체에 적용되는 경우를 Case별로 구분하여 시나리오별 경제성 분석을 실시하였다. 시나리오별 경제성 분석의 결과는 NPV로 산출하였으며, 탈질설비가 구축되어 있지 않은 기업(Case 1)이 일반 SCR 기술을 신규로 도입하는 경우(Scenario 1-1)와 저온 SCR 기술을 신규로 도입하는 경우(Scenario 1-2)를 분석하였다. 그리고 탈질설비가 이미 구축되어 있는 기업(Case 2)이 일반 SCR 기술을 그대로 사용하는 경우(Scenario 2-1)와 저온 SCR 기술로 대체하는 경우(Scenario 2-2)로 구분하여 분석하였으며, 모든 시나리오별 NPV 결과를 바탕으로 비교 분석을 실시하였다.

$\ll$대한침구학회지\gg$에 실린 중재 관련 비무작위 비교연구논문의 질적 평가 (Quality Assessment of Non-randomised Comparative Clinical Studies in The Journal of Korean Acupuncture and Moxibustion Society)

  • 선종인;백용현;이상훈;이재동
    • Journal of Acupuncture Research
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    • 제27권1호
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    • pp.109-116
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    • 2010
  • Objectives : Since The Journal of Korean Acupuncture and Moxibustion Society(JKAMS) started publishing in 1984, randomised controlled trials(RCTs) and non-randomised clinical studies(NRSs) consistently have increased in quality and quantity. There has been no study on quality assessment of NRSs. Thus, this study evaluted non-randomised comparative clinical trials in the JKAMS to assess the quantity and quality. Methods : Upon extracting NRSs for assessing the intervention effects from all the articles published in the JKAMS from 1984 to 2009, assessments were made on methodological index for non-randomised studies(MINORS). Also, the analysis were made upon the proportion of non-randomised comparative clinical trials within original articles. The mean scores by research methods and years, and total scores and mean scores of yearly research methods were analyzed. Results : A total of 44 trials on non-randomised comparative clinical trials were selected. In 1980s, 4.3% of the total selected original articles, in 1990s, 4.1%, and in 2000s 14.2% were NRSs. According to the research designs, the mean scores of MINORS were Case-control study 18.3, Controlled before and after 18.5, Quasi randomised trial 18.5, and non randomised trial 17.9(out of 24), respectively. Cross-sectional study was the most frequently used(41.9%). Conclusion : Although NRSs consistently increased in quantity, the assessed mean scores were low and most articles used Cross-sectional study. Thus, there should be studied using appropriate research methods in the future.

한국과 러시아 여성들의 모피의류 선호도 비교연구 - 서울-모스크바 여성들을 중심으로 - (Comparative Study on Fur Clothing Preferences of Korean and Russian Women - Focused on Seoul and Moscow Women -)

  • 이주은
    • 복식문화연구
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    • 제3권2호
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    • pp.425-448
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    • 1995
  • The purpose of this study was to compare fur clothing preferences of Korean and Russian women, and then to provide a beneficial data to Koran fur manufacturers who is working in Korea and advancing into Russia. 346 subjects were gather in Seoul and Moscow through convenience sampling method, and frequency, percentage, mean, x²-test, t-test were conducted for data analysis. The results were as follows: 1. Korean and Russian women's fur clothing buying motives, information sources, important factors on purchasing, purchasing, influences ere generally examined. 2. Russian women's fur clothing possession rate as well as fur clothing purchasing intention in the future were higher than Korean women's. 3. Fur clothing item, material, color, style, length which Korean and Russian women prefer were compared. 4. In case of shilhouette, Russia women showed high preference on swinger shilhouette, relatively Korean women preferred H-line. 5. In case of collar design, Russian women showed high preference on stand collar, relatively Korean women preferred notch collar or shawl collar. 6. In case of sleeve design, Russian women showed high preference on turn back cuffs sleeve, relatively Korean women preferred push-up sleeve.

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The Strategy of Renewable Energy of Sri Lanka for Energy-based Economic Development: Case of Wind Power

  • Han, Jong Taek;Kim, Jun Yeup
    • 국제지역연구
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    • 제21권1호
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    • pp.281-301
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    • 2017
  • This article examines the way of the functionality of policy instruments for the development of renewable energy through the case of the wind power. The general barrier of the renewable energy development is considered to be the economic barrier. However the principal issue is the political barrier without the broad cooperation between the host government and the firm. Maintaining the long-term competitive advantage requires the shift of not only the strategy following the external circumstance but also the internal capacity development to utilize resources. Thus the comparative case study of Sri Lanka and Germany proposes the analysis of the supply-push and demand-pull policy with five patterns on the development of wind power in order to suggest how the functionality of policy instruments must be served to foster the wind power.

Comparative Analysis of the Achievements and Limitations of Projects that Support Local Businesses in an Area Undergoing Gentrification: A case study on Brixton

  • Park, Youngseo;Ham, Sungil
    • Architectural research
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    • 제24권1호
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    • pp.13-20
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    • 2022
  • This research has been conducted to find answers to the questions of how projects that support local businesses work in areas undergoing gentrification and what are the achievements and limitations of these projects, based on the case studies of Brixton Pound and Pop Brixton supporting local businesses in Brixton in the London borough of Lambeth. To this end, this study collected data through interviews with local businesses belonging to each project and analysed them based on prior research on the projects, evaluation reports, and articles in the media. It began by investigating the supporting mechanisms of projects that support local businesses in the area, and then analysed and evaluated the projects' contribution to local businesses and the impact on the local community according to these mechanisms. The two projects in the case study showed contrasts in their support mechanisms, governance, and the role of Lambeth Council, and the local businesses' evaluations of the projects' support differed depending not only on the support mechanism of each project but also on business type and perceptions of the impact of gentrification.

지역 어메니티 촉진을 위한 마을만들기 운영사례 비교연구 (A comparative case study of neighbourhood making for promoting a local amenity)

  • 이영창;김근호
    • 농촌계획
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    • 제19권2호
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    • pp.129-138
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    • 2013
  • The aim of the research was to analyze programs, outcomes, promotion process, and operation methods of neighbourhood making to provide basic information for progressive improvement directions in the future. Buk-gu in Gwanju city, samdeok-dong in Daegu city and dongpirang in Tongyeong city were selected for a comparative analysis. The main bodies of neighbourhood making for promoting a local amenity were analysed for this research. The results indicated that a voluntary and continuous participation of residents was expected in the case of neighbourhood making led by the residents. However, a steady budget support from the outside was necessary for the continuous management and improvement of neighbourhood organization. For this, a voluntary agreement was required through the consultative group and committee formation. The member of civil organization has a limitation in the ability to develop and maintain continuos activities in the case of neighbourhood making led by a civil organization. This research found that operation methods including the constant checking, the search for new ideas through assessment of the resident's participation, local festivals for a community formation and real satisfactions of residents' desires were needed in the neighbourhood making led by a civil organization. A participation rate in neighbourhood making was low in the case of neighbourhood making led by administrative bodies. This result indicated that the long-term strategics for space renewal and community revitalization were important. Various easy ways of residents' participation to reflect their interests and operation systems were also needed. Finally, current local issues, active residents' participation and residents' opinions would be included in the process of neighbour making in the future.

국제중재 준거법으로서의 부당이득법리에 관한 한미간 비교 연구 (Comparative Analysis of Unjust Enrichment as a Governing Law in International Arbitration Between The U.S. and Korea)

  • 하충룡
    • 한국중재학회지:중재연구
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    • 제13권2호
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    • pp.657-682
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    • 2004
  • 계약법과 관련한 많은 주제 중에서 본 고에서는 미국과 한국에서의 부당이득법리를 중심으로 비교연구를 하였으며 한미간의 부당이득법리의 차이가 분쟁해결수단의 선택에 어떠한 영향을 미칠 수 있을 것인가를 살펴보았다. 미국의 부당이득법리와 한국의 부당이득법리를 세 가지 관점에서 비교 고찰하였다. 첫째, 부당이득의 법리적 특성에서 살펴본 바에 의하면 양국 모두 형평과 공정성에 의하여 해석되어 지고 있다는 점에서 상당한 공통점을 발견할 수 있었지만, 한국에서는 '법률상 원인 없이'라고 하는 명시된 규정에 의하는 반면 미국에서는 단순히 '불공정성'이라고만 하여 법률적 해석기준을 다소 모호하게 하고 있음을 발견하였다. 둘째, 부당이득 성립요건에서는 한미간 상당한 차이가 나타난 바, 미국에서는 '피고가 부당이득 사실에 대하여 인지하고 있어야 한다'라고 하는 반면 한국에서는 부당이득 사실에 대한 피고의 선의 악의를 구분하지 않음으로서 미국이 한국보다 원고의 입증책임을 엄격하게 적용하고 있음을 알 수 있었다. 셋째, 부당이득의 효과와 관련하여 양국 모두 원물의 반환 내지는 합리성과 시장가격에 근거한 상당금액의 보상을 법적 구제범위로 설정함으로서 차이가 없었다. 결론적으로 미국에서는 부당이득법리가 분쟁의 쟁점인 경우에 '불공정성'에 대한 법적 해석의 모호성과, 악의에 대한 입증 책임 등으로 인하여 법정에서의 해결보다는 우호적 해결 방식인 중재가 한국보다 상대적으로 많이 채택될 것으로 보여 진다

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AHP - 군집분석을 이용한 주요어종의 자원감소 원인 비교분석에 관한 연구 (The Comparative Analysis of the Reasons for Decreases in Marin Fishery Resources Based on AHP & duster Analysis)

  • 박철형;이상고
    • 수산경영론집
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    • 제40권3호
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    • pp.127-146
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    • 2009
  • This study is to estimate the factor weights of the reasons for decreases in marine fishery resources using the Analytical Hierarchy Process. Furthermore, it classifies 20 fishes under a fishery resource recovery plan into various groups of fishes according to these factor weights using the non-hierarchial cluster analysis. The factors of decreases in marine fishery resources are identified as bio-ecological, technology-system, economic-business, and fishing village-society factors. Two of the most important factors of decreases in resource are turned out to be the economic-business and bio-ecological factors, estimated as 31% and 30% respectively. The technology-system and fishing village-society factors are estimated as 21% and 18% respectively. The study utilizes non-hierarchical cluster analysis in order to classify 20 fishes into 2, 3, and 4 groups. K-means cluster analysis is applied for grouping in conjunction with ANOVA to identify statistical differences in factors. Once again, the economic-business and bio-economic factors play main role in grouping 2-groups of fishes case. The third group of fishes in addition to the previous 2 groups of fishes appears as those 4 factors of decrease evenly play about the same role at a 3-groups of fishes case. Finally, the economic-business and bio-economic factors are turned out to be evenly important in the 4th group once there are 4-groups of fishes.

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LID 기법 적용에 의한 SCS-CN값 변화가 강우유출특성에 미치는 영향 분석 (The Analysis of Runoff Characteristics by Alterations of SCS-CN Value using LID Method)

  • 권준희;박인혁;하성룡
    • 환경영향평가
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    • 제19권1호
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    • pp.49-57
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    • 2010
  • The objective of the research is to analyze changing trend of water discharge in precipitation, according to changing land use, through an environment-friendly urban development method called LID. The study chose S1 basin (Separated Sewer districts) in Cheongju region for survey. Among LID methods, relatively more applicable methods of green rooftop space and parking lot with permeable material were selected to construct plausible scenarios. Curve Number (CN) value was calculated due to land use patterns in each scenario, and SWMM model simulation were conducted during 2008 for comparative analysis. For Case 1, only parking lot with permeable material was applied to the scenario. Green rooftop space I and II were applied to Case 2 and 3 respectively. For Case 4 and 5, green rooftop space I and II were applied, in addition to parking lot with permeable material, Calculation of CN value showed that for S1 basin, the value was 88.1 (prior to scenario application), 86.5 (Case 1), 81.9 (Case 2), 68.5 (Case 3), 80.4 (Case 4) and 67.2 (Case 5). Changing pattern of rain water discharge was analyzed for each scenario. For Case 1, the change was not remarkable before and after application of scenario. In Case 2 and 4, the impact of rain water discharge as source of pollutant fell to 20~30%. The rate dropped to 30~50% in Case 3 and 5 respectively. The result demonstrates that the amount of rain water discharge, amount and frequency of sewer overflow, frequency of rain water discharge, and pollution load decreased in accordance with declining CN value in each scenario. In installing green rooftop space, the effect was twice greater when rain water discharge was directly infiltrated into soil.

한국과 일본의 현대복식에 나타난 용양의 비교분석 (Comparative Analysis of Dragon Patterns Found in Contemporary Fashion between Korea and Japan)

  • 남미현
    • 한국의상디자인학회지
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    • 제3권1호
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    • pp.57-76
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    • 2001
  • This study was intended to make a comparative analysis of the plastic features of Korean and Japanese dragon patterns found in the process of recreating traditions in comtemporary fashion based on the investigation into the style of expression in relation to the origin, formative evolution, symbolism and traditional costume of the dragon. The form of the dragon has evolved with some similarity and peculiarity between both countries and been changed into many kinds and diverse forms such as the humorous dragon pattern of the Yi Dynasty and the simplified and designed dragon pattern symbolizing the Japanese family crest and the like, Its symbolism has lasted in terms of the sacrificial object, royal power, good omen, Buddhist guardian and the like. There is a difference in the aesthetic sense due to the different traditions and cultural background between Korea and Japan, and the dragon pattern found in the process of recreating the tradition in comtemporary fashion manifested itself as the peculiar aspect. An attempt was made to make a comparative analysis of the dragon pattern found in comtemporary fashion between Korea and Japan. The following results were obtained: First, the commonality between both countries was to make a contemporary expression of the dragon pattern, which was expressed in a realistic form because of a traditionally inherent strong image of the dragon. On the other hand, the designed dragon pattern rarely found expression. It can be said that carefully treating the dragon pattern is attributed to the Oriental thinking like this. Second, Korean people have arranged one or more simplified dragon patterns taking on a form of the coiling dragon in the composition of the scattered point and made a comtemporary expression of them by the contrast of black and white shading in Korea. And the humorous form of the dragon pattern manifested itself in the Yi Dynasty. On the other hand, the case of printing the dragon pattern in the black dragon sword of all over the Kabuki costume in a pictorial composition has frequently appeared in Japan. And Japanese people have expressed its lightness and briskness rather than the dignity and strength that the dragon pattern gives with the use of strong color tones and new materials.

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