• 제목/요약/키워드: mix characteristic

검색결과 109건 처리시간 0.022초

석탄 가스화 복합발전(IGCC) 슬래그잔골재의 PHC파일 성형성 및 배합특성에 관한 연구 (The Study on Moldability and Mix Characteristic of IGCC Slag Aggregate as PHC-Pile)

  • 박용규;고효진;윤기원
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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    • pp.273-274
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    • 2018
  • When IGCC Slag(CGS) aggregate was used as PHC-Pile, the moldability was lowered as the mixing ratio increased. concrete mix design. Also the mix characteristics increased the use of AD depending on the usage rate, however, require detailed consideration.

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탐색곡선법과 WASP-IV 모형을 이용한 국내 적정 전원구성 분석 (Generation Mix Analysis based on the Screening Curve and WASP-IV Techniques)

  • 장세환;박종배;노재형
    • 전기학회논문지
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    • 제61권4호
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    • pp.534-541
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    • 2012
  • This paper tries to elicit an optimal generation mix of Korea. Two approaches, using the screening curve method and taking advantage of a generation expansion planning tool, WASP-IV, are applied in getting the mix. The data used in this study is based on the 5th basic plan for long-term electricity supply and demand. The Load Duration Curve, that is needed for applying Screening Curve Method(SCM), is made based on the load profile in 2010. In our using SCM, the nuclear plant's operation characteristic, carbon emission cost and spinning reserve are considered. In using WASP-IV to get the adequate generation mix, the base and target demand forecasts in the 5th basic plan are used and the carbon emission cost is also considered. In this paper, It introduces the domestic adequacy generation mix in 2024 though SCM and WASP-IV.

콘크리트의 파괴에너지와 다른 재료특성을 이용한 배합설계법에 관한 실험연구 (Experimental Study on the Mix Design Method using the Fracture Energy and the other Parameters in Concrete.)

  • 강성후
    • 콘크리트학회지
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    • 제4권4호
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    • pp.149-160
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    • 1992
  • 콘크리트 압축강도가 설계의 규준이 될 경우 배합비를 결정하는 방법은 여러 가지가 있으나, 파괴에너지 및 탄성계수와 같은 규준이 주어질 경우 배합비 결정에 적용하는 방법은 거의 없다. 이를 위하여 본 연구는 콘크리트 재료성질의 관계에 관한 배합설계도(Mix design diagram)를 제안하였다. 이 방법은 시멘트량, 물-시멘트 비가 콘크리트의 압축강도, 탄성계수, 할렬인장강도, 파괴에너지 그리고 콘크리트 특성길이(Characteristic length)에 주는 영향을 실험에 의하여 규명하였다. 시편제작을 위하여 각기 다른 물-시멘트비와 워커빌리티를 갖는 6종류의 무근콘크리트 배합이 사용되었다.

$CO_2$ 배출량제약을 고려한 최적전원구성 (The Best Generation Mix considering CO2 Air Pollution Constraint)

  • 이상식;트란트룽틴;권중지;최재석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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    • pp.149-151
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    • 2005
  • A new approach considering CO2 air pollution constraints in the long-term generation mix is proposed under uncertain circumstances. A characteristic feature of the presented approach in this paper is what effects give the air pollution constraints in long term best generation mix. Best generation mix problem is formulated by linear programming with fuel and construction cost minimization with load growth, reliability (reserve margin rate) and air pollutionconstraints. The proposed method accommodates the operation of pumped-storage generator. It was assumed in this study that the construction planning of the hydro power plants is given separately from the other generation plans. The effectiveness of the proposed approach is demonstrated by applying to the best generation mix problem of KEPCO-system, which contains nuclear, coal, LNG, oil and pumped-storage hydro plant multi-years.

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현대 로맨티시즘 패션에서 나타난 믹스 앤 매치 스타일 분석 (Analysing Mix and Match Style Appeared at the Modern Romanticism Fashion)

  • 이민정;이인성
    • 복식문화연구
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    • 제17권4호
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    • pp.653-662
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    • 2009
  • The past Romanticism, which emphasized loveful, womanish property, has changed into new-concept Romanticism as it was harmonized with various emotional cultures and trends in the 21st century. New-concept romanticism is found in various fields ranging from personality, diversity and discrimination to emotion. It is appearing as a new style searching for taste as it is mixed and matched with other fields. In fashion, Romanticism and mix-and-match trend provide womanish feeling through the match with romantic chiffon, high-waisted pants and cashmere cardigan and show modern emotion through vest and short blazer. Therefore, it is necessary to reconsider the method to analyze and express fashion emotion style on the basis of mix-and-match trend of Romanticism. The purpose of this study is to analyze how Romanticism is expressed in the mix and match with other emotional style, predict direction of Romanticism style and establish the ground to find changing fashion trend accurately. The researcher expects that design development will be focused on the fashion, which is more various and characteristic and search for convenient, healthy life, on the basis of the analysis on mix and match shown in Romanticism fashion of the study. The researcher tried to provide the base of design development and assist design activation by using mix and match, which can create various new styles, accurately and understanding and predicting the fashion trend of the 21st century.

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전력계통(電力系統)의 불확실성(不確實性)을 포함한 유연(柔軟)한 장기전원구성(長期電源構成)의 수립에 관한 연구(硏究) (A Study on the Construction of the Flexible Long-Term Generation Mix under Uncertainties of Power System)

  • 송길영;남궁재용;최재석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1993년도 하계학술대회 논문집 A
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    • pp.159-162
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    • 1993
  • A new approach using fuzzy dynamic programming is proposed for the flexible long-term generation mix under uncertain circumstances. A characteristic feature of the presented approach is that not only fuzziness in fuel and construction cost. load growth and reliability but also many constraints of generation mix can easily be taken into account by using fuzzy dynamic programming. The method can accommodate arbitrary shape of membership function as well as the operation of pump-generator. And so more realistic solution can be obtained. The effectiveness of the proposed approach is demonstrated by the best generation mix problem of KEPCO-system which contains nuclear, coal, LNG, oil and pump-generator hydro plant in multi-years.

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고강도 콘크리트의 실용화를 위한 연구 (A Study for the Application of High-Strength Concrete)

  • 이장화;유영찬;민병렬;김긍환
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1991년도 가을 학술발표회 논문집
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    • pp.140-145
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    • 1991
  • Tests were conducted to get a mix proportioning of high strength concrete between σ28 and (C/W) using low quality materials easily purchased in situ. Superplasticizer was used as a chemical admixture to compensate low slump of base concrete keeping it up about 15±2㎝. General material properties such as modulus of elasticity, poisson's ratio, unit weight and stress-strain characteristic of high strength concrete were obtained. Test results show that mix proportioning of high strength concrete proposed in this paper have reasonable validity and these can be used as a design criteria in high strength concrete construction.

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STABILITY OF TWO-PHASE FLOW MODELS

  • Jin, Hyeon-Seong
    • 대한수학회논문집
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    • 제22권4호
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    • pp.587-596
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    • 2007
  • In this paper, we study two-phase flow models. The chunk mix model of the two-phase flow equations is analyzed by a characteristic analysis. The model discussed herein has real characteristic values for all physically acceptable states and except for a set of measure zero has a complete set of characteristic vectors in state space.

마케팅 믹스를 활용한 패밀리레스토랑의 홈페이지 분석에 관한 연구 (A Study on Homepage Analysis of Family Restaurant thorough Marketing Mix)

  • 진양호;전진화
    • 한국조리학회지
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    • 제9권2호
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    • pp.44-63
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    • 2003
  • This study is about internet marketing of family restaurant through marketing mix and we found out the way which can make to activate by means of analysis of family restaurant's homepage. This study was done as following precedure. First, we've compared between characteristic was based on contents distinctive quality of family restaurant's homepage through the marketing mix. And in the next step, we've compared and ana lysed homepage of family restaurant which was chosed by the internet surfing. In the last, we evaluate strategy of marketing mix which is going well in the each field of business and then research of the way can improve internet-marketing. We draw the findings which is seperated by goods, price, promotion, distribution, other service according to marketing constituents. As a result of study, it is found that each company has given much more weight on some part in internet marketing's field of activity. In general, they put an emphasis on activity of goods and promotion. On the other hands they don't consider prices and delivery to be important compared with other parts. One of the most important things about internet-marketing is that fast and exact feedback and community makes each firm to be able to help to communicate with customer. It's like off-line-restaurant make use of free-coupon and an anniversary service.

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강자성체박막의 회전에 따른 자기저항의 변화 (Magnetoresistance Variation for Rotation in Ferromagnetic Thin Films)

  • 양기원;박상철
    • 한국안광학회지
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    • 제11권3호
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    • pp.225-229
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    • 2006
  • 강자성체인 철과 니켈의 박막에서 전류와 자기장이 이루는 각도의 변화에 따른 자기저항의 변화를 관찰하였다. 경사각에 따른 PMR과 NMR의 크기가 같은 ${\phi}_{mix}$의 변화는 전류에 수직한 자기장의 성분과 평행한 자기장의 성분이 같게 되는 각도에서 자기저항 루프의 역전이 되는 것을 이용하면 ${\phi}_{mix}=tan^{-1}(1+tan{\theta})$와 같이 구해진다. 위 관계식은 실험치와 잘 일치함을 보여준다. 반면에 철박막의 경우에는 니켈박막과 자화축이 다르게 나타나서 ${\phi}_{mix}$가 위 식으로 주어진 관계와 일치하지 않는다.

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