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Evaluation of seismic response of soft-storey infilled frames

  • Santhi, M. Helen;Knight, G.M. Samuel;Muthumani, K.
    • Computers and Concrete
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    • 제2권6호
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    • pp.423-437
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    • 2005
  • In this study two single-bay, three-storey space frames, one with brick masonry infill in the second and third floors representing a soft-storey frame and the other without infill were designed and their 1:3 scale models were constructed according to non-seismic detailing and the similitude law. The models were excited with an intensity of earthquake motion as specified in the form of response spectrum in Indian seismic code IS 1893-2002 using a shake table. The seismic responses of the soft-storey frame such as fundamental frequency, mode shape, base shear and stiffness were compared with that of the bare frame. It was observed that the presence of open ground floor in the soft-storey infilled frame reduced the natural frequency by 30%. The shear demand in the soft-storey frame was found to be more than two and a half times greater than that in the bare frame. From the mode shape it was found that, the bare frame vibrated in the flexure mode whereas the soft-storey frame vibrated in the shear mode. The frames were tested to failure and the damaged soft-storey frame was retrofitted with concrete jacketing and, subjected to same earthquake motions as the original frames. Pushover analysis was carried out using the software package SAP 2000 to validate the test results. The performance point was obtained for all the frames under study, therefore the frames were found to be adequate for gravity loads and moderate earthquakes. It was concluded that the global nonlinear seismic response of reinforced concrete frames with masonry infill can be adequately simulated using static nonlinear pushover analysis.

석유화학용 Ball Valve 유동 및 강도 수치해석 (A Numerical Analysis on Flow and Strength of Ball Valve for petrochemistry)

  • 이중섭;정휘원;장성철;남태희;박중호;윤소남
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 동계학술발표대회 논문집
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    • pp.357-362
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    • 2008
  • This study have goal with reverse engineering for petrochemistry of high pressure ball valve for localization. Ball valve for development accomplished with flow analysis based on provision of ANSI B16.34, ANSI B16.10, ANSI B16.25 In order to localize the petrochemistry high pressure control valve. Numerical simulation using CFD(Computational Fluid Dynamic) in order to predict a mass flow rate and a flow coefficient form flow dynamic point of view. The working fluid assumed the water($H_2O$). The valve inlet and outlet setup a pressure boundary condition. The outlet pressure was fixed by atmospheric pressure and calculated inlet velocity 5m/s. CFD solver used STAR-CCM+ which is commercial code. The result shows change of mass flow rate according to opening and closing angle of valve. Flow decrease observed open valve that equal percentage flow paten which is general inclination of ball valve. The structural analysis used ANSYS which is a commercial code. Stress analysis result of internal pressure in valve showed lower than yield strength. This is expect to need more detail design and verification for stem and seat structure.

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A Study on the Development of Educational Curriculum Model for Labor Manager's Empowerment : Focusing on NCS Labor Management Capability Unit

  • KIM, Jae-Sung
    • 동아시아경상학회지
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    • 제8권1호
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    • pp.21-40
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    • 2020
  • Purpose - The labor management department is an important area in charge of the labor-management relations that affects the competitiveness of the company. This study seeks to diagnose labor management education focusing on labor manager competency strengthening curriculum that is currently being conducted domestically and propose an educational model that can contribute to the labor manager competency development by researching improvement measures. Research design, data, and methodology - In this study, the first phase is a Delphi open form survey and 15 expert panels participated. The second phase had 31 expert panels participating and in the final IPA analysis, targeting 111 on-site subjects, it conducted a survey regarding desired level of current educational level and future education requirement. Results - A final 57 subjects regarding 11 items to increase the competency of the labor managers through the first and second Delphi survey was deduced through this study. To add, regarding the current education level and desired level that the current workers are thinking with respect to analysis results of the 57 subjects through the IPA analysis, an educational model could be deduced to increase competency of the labor managers based on the result. Conclusions - Thus far, research regarding labor management has been insufficient as it was defined as a subordinate role to human resources. This study reviews the role and competency of labor managers and presented an educational model to strengthen the capabilities of internal labor managers to re-illuminate the labor manager. However, this study is limited in terms of the diversity of the types of companies participating and the small number of panels. Better data can be produced if such parts are supplemented in the future.

가임기 간접흡연 여성에서 발생한 폐 호산구성 육아종 1예 (A Case of Pulmonary Eosinophilic Granuloma in a Passive-Smoking Reproductive Female)

  • 신재호;김지영;오수환;박홍수;정상수;나상규;김형중;안철민;김해균;김상진;조상호
    • Tuberculosis and Respiratory Diseases
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    • 제45권2호
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    • pp.421-428
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    • 1998
  • 기흉과 미만성 간질성 폐질환의 소견을 보인 흡연력이 없는 젊은 여자 환자에서 개흉 폐생검후 면역조직화학염색을 통하여 폐 호산구성 육아종을 진단한 1예를 경험하였기에 보고하는 바이다.

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신세대여성들의 화장경험을 통해 본 여성문화 드러내기와 그 저항성에 관한 연구 (A study of The New Generation Women's Culture : Women’s Culture)

  • 이현주
    • 대한화장품학회지
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    • 제25권3호
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    • pp.101-122
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    • 1999
  • 지금까지 화장에 관한 연구가 화장술의 방법이나 표현 형태에 따른 시대적인 변천 혹은 성분 제조상의 과학적인 연구가 주를 이루었다면 이연구는 그동안의 연구에서는 여성의 경험을 중심으로 화장의 역사성을 읽음으로써 화장을 하나의 학문적인 영역으로 승화시키고자하는 시도의 글이다. 화장은 인류의 역사와 더불어서 시작되었다고 볼 수 있으며 더욱이 여성의 삶과는 불가분의 관계를 띠고 있다. 역사적인 변화와 여성의 지위 변화에 따라서 유행과 그 의미를 달리하여왔으며 사회·문화적인 특수성을 읽을 수 있는 하나의 텍스트이다. 따라서 본 연구에서는 오랫동안 여성이라는 특수한 상황 속에서 공통적으로 경험해온 ‘화장’을 여성문화로서 조명해보고자 하였다. 또한 연구분석틀로써 커뮤니케이션 연구의 주요 이론으로 사용되고 있는 문화이론의 신수용자 개념을 사용하여 주체적 의미 생성 과정과 의미생산. 그리고 그 과정에서 파생되는 즐거움과 저항의 가능성에 관한 논의를 중심으로 살펴보았다. 즉 여성을 수동적인 희생자가 아닌 능동적인 수용 주체로 보고 그 여성들의 삶 속에서 화장의 의미가 어떻게 다르게 규정되는지, 그 속에서 생성되는 즐거움의 기제가 무엇인지 주체의 위치에 따라 다르게 규정되는 화장의 규범 속에서 저항의 방식이 어떤 식으로 전개되는지를 살펴보았다.

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한국인의 족문에 관한 정량적 연구 (A Quantitative Study of Sole Prints in Koreans)

  • 이금영;오영남;마재영;조징
    • 한국동물학회지
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    • 제32권2호
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    • pp.84-92
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    • 1989
  • 한국인 정상 남자 112명, 여자 118명 총 230명의 460족척에 나타난 피문을 분석하여 다음과 같은 결과를 얻었다. 1) 족척의 중간부의 융선 방향은 횡행, 경도의 비골측 근위경사, 경도의 비골측 근위경사, 뚜렷한 비골측 원위경사의 순으로 나타났으며 중간부의 융선 배열에 대한 대칭 빈도는 63.9%로 나타났다. 2) 무지구부 문형은 원위측 제상문, 와상문, 개방문의 순으로 나타났으며 무지구에 나타난 대칭 빈도는 83.2%이였다. 3) 지간부 문형은 II 지간부에서는 개방문, 원위측 제상문, 근위측 제상문, 와상문의 순으로, III지간부에서는 개방문, 원위측 제상문, 와상문, 근위측 제상문의 순으로, IV지간부에서는 개방문, 원위측 제상문, 와상문의 순으로 나타났다. 4) 지간부 융선수는 a-b 57.76, b-c 70.74, c-d 75.09이며 남녀 사이, 또는 양족 사이에는 통계적으로 유의한 차이가 없었다 (p>0.01).

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클라이언트/서버를 이용한 CAI 프로그램의 구현 (Implementation of CAI Program using Client/Server)

  • 이순애;박덕원
    • 한국컴퓨터정보학회논문지
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    • 제4권3호
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    • pp.53-59
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    • 1999
  • 교실망 환경하에서 대화형 코스웨어의 비구조적인 형태로 국내에서 개발된 CAI가 거의 없는 실정이다. 멀티미디어 패키지를 이용하여 정규 수업 시간에 활용할 수 있는 효율적인 멀티프리젠테이션의 저작 및 채팅 클라이언트/서버 개념의 도입을 적용하여. 교수자와 학습자, 학습자와 학습자간의 상호작용을 통한 학업 성취도를 향상시키는 방향을 제시하였다 또한 CAI 저작에 있어서의 계속적인 코스웨어의 저작 및 유지보수의 효율성을 위해 멀티패키지 프리젠테이션 저작도구의 하나인 파워포인트를 이용하여 프리젠테이션을 활용한 학습자료를 개발하며, 교실망에서 채팅 클라이언트/서버를 도입하여 토의학습을 통한 보다 효율적인 수업이 될 수 있도록 구성하였다. 개발된 CAI를 초·중·고등학교 학습현장에서 학생들의 수업에 적용 분석한 결과 토의학습을 통한 열린교육이 가능하여 학업 성취도를 높일 수 있는 효용성을 보였다.

Cloning and overexpression of lysozyme from Spodoptera litura in prokaryotic system

  • Kim, Jong-Wan;Park, Soon-Ik;Yoe, Jee-Hyun;Yoe, Sung-Moon
    • Animal cells and systems
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    • 제15권1호
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    • pp.29-36
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    • 2011
  • Insect lysozymes are basic, cationic proteins synthesized in fat body and hemocytes in response to bacterial infections and depolymerize the bacterial cell wall. The c-type lysozyme of the insect Spodoptera litura (SLLyz) is a single polypeptide chain of 121 residues with four disulfide bridges and 17 rare codons and is approximately 15 kDa. The full-length SLLyz cDNA is 1039 bp long with a poly(A) tail, and contains an open reading frame of 426 bp long (including the termination codon), flanked by a 54 bp long 5' UTR and a 559 bp long 3' UTR. As a host for the production of high-level recombinant proteins, E. coli is used most commonly because of its low cost and short generation time. However, the soluble expression of heterologous proteins in E. coli is not trivial, especially for disulfide-bonded proteins. In order to prevent inclusion body formation, GST was selected as a fusion partner to enhance the solubility of recombinant protein, and fused to the amplified products encoding mature SLLyz. The expression vector pGEX-4T-1/rSLLyz was then transformed into E. coli BL21(DE3)pLysS for soluble expression of rSLLyz, and the soluble fusion protein was purified successfully. Inhibition zone assay demonstrated that rSLLyz showed antibacterial activity against B. megaterium. These results demonstrate that the GST fusion expression system in E. coli described in this study is efficient and inexpensive in producing a disulfide-bonded rSLLyz in soluble, active form, and suggest that the insect lysozyme is an interesting system for future structural and functional studies.

도시 유역에 위치한 하구를 구성하는 하천의 저영향 개발 기간 산정 (Estimation of low impact development duration of estuaries at urban area)

  • 정안철;임정철;김송현;백충열
    • 한국습지학회지
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    • 제21권4호
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    • pp.290-297
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    • 2019
  • 하구는 하천이 개방해역과 연결되어 있어 담수와 염수가 만나는 전이지대로 생물다양성이 매우 높고 독특한 생태계를 구성하고 있다. 그러나 하구의 생태적 가치를 인식하기 전부터 다양한 훼손 및 교란이 이루어져 왔으며, 이를 위한 대책이 필요한 실정이다. 하구를 구성하는 하천의 하천기본계획은 지속적인 교란요소로 작용하고 있으나, 수재해로부터 인명피해를 최소화하고 하천의 기능을 강화시켜 국가 수자원을 관리하기 위한 공익적 목적이 있다. 따라서 개발과 생태계 보호라는 대립적 관계가 공존할 수 있는 방안에 대한 연구가 필요하다. 본 연구에서는 이를 위해서 환경창이라는 개념을 이용해 하구 생태계가 개발의 부정적인 영향으로부터 교란이 최소화되는 기간인 저영향 개발 기간을 산정하였다. 본 연구에서 제시한 저영향 개발 기간 산정방법은 향후 이루어질 개발사업이나 교란·훼손 행위 등으로부터 생태계를 보호하기 위한 근거 및 기초자료로 활용될 수 있을 것으로 판단된다.

하이브리드의 탈 장르화를 응용한 메이크업 디자인에 관한 연구(제 2보) (A Study on Make-up Design with Application of Genre Deconstruction in Hybrid(Ver. 2))

  • 방기정;김경희
    • 패션비즈니스
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    • 제16권2호
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    • pp.88-107
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    • 2012
  • Hybrid implies that elements in more than two are combined, and is what is merged and used complexly the technologies and materials in several fields according to the development in scientific technology and the progress in technology. In the formative and artistic aspect, the hybrid can be said to be phenomenon that two of mutually different genres are combined. The function and form in each genre, which were combined at this time, are remained wholly or partially, thereby revealing as well without hiding a fact of having been combined. In the digital communication era, the same time level was integrated into one culture, with destroying the temporal·spatial boundary. As for the objectives of this study, first, the aim is to suggest a model for researching into make-up by grasping the developmental process and the characteristics of hybrid art through considering an art theory of hybrid, which was shown in make-up. Second, the aim is to design make-up by analyzing trend by make-up style after applying the genre deconstruction in hybrid. The modern make-up design through genre-deconstruction characteristics beyond diverse plurality and genre could be known to be highlighted as aesthetic characteristic by a slight attempt as communication of open space, which connects culture and genre, which had failed to be recognized and was neglected. Through the results of this study, it could be known that there is infinite possibility in developing make-up design in line with modern sensation through aesthetic element and symbolic significance through genre deconstruction. Based on these findings, its significance can be said to be in substantially contributing to offering new sight to the design & formative characteristic and the expression mode in future make-up, to providing basic data, and to strengthening competitive edge of culture and art.