• 제목/요약/키워드: return level

검색결과 660건 처리시간 0.035초

CM(ConstructionManagement)에의 효율적 BIM활용에 관한 연구 (A Study on the good use of Construction Management Model based on BIM)

  • 민영기;김경준
    • 한국디지털건축인테리어학회논문집
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    • 제10권3호
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    • pp.87-95
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    • 2010
  • The CM(Construction Manager) of D-university has been seeking the advice of my BIM-team to adopt CM(Construction Management) and BIM best practices to improve project delivery results, and has authored best practice reports for spatial validation, BIM, 3D, 4D and 5D performance. Building Information Modeling(BIM) Process, Integration, and Adoption looks at BIM implementation from a company and project level laying out a process for companies to use BIM. Following this studies, participants will be able to: 1. BIM participants has been creating a BIM process diagram for a project, and has been evaluating and selecting process options for a specific BIM project. 2. BIM participants has been describing the roles and responsibilities of participants in the BIM process, and has been communicating the BIM process to management, colleagues, and project stakeholders. 3. BIM participants has been identified consistent factors influencing BIM return on investment at the project level and the company level, and has been outlining a process for BIM adoption on the project level and company level.

댐 유입량 자료를 이용한 갈수빈도해석에 대한 연구 (A Study on Low-flow Frequency Analysis Using Dam Inflow)

  • 정영훈;남우성;신홍준;허준행
    • 대한토목학회논문집
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    • 제32권6B호
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    • pp.363-371
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    • 2012
  • 본 연구에서는 댐의 상시보장유량 설정에 기준이 되는 갈수량을 산정하기 위하여 화천댐과 춘천댐의 유입량 자료를 구축한 후 적합도 검정을 실시하여 적정확률분포형을 선정하였다. 또한 선정된 적정확률분포형에 대하여 재현기간에 따른 월별 유입량 계열로 산정한 갈수빈도해석 방법(case 1)과 월단위 누가유입량 계열의 차로 산정한 갈수빈도해석 방법(case 2)을 수행하였다. 본 연구를 통해 한강유역의 상류댐인 화천댐과 춘천댐의 통계적 특성을 반영한 월별 재현기간에 따른 유입량은 홍수기에 제한수위를 설정하는 것과 같은 형식으로 댐의 상시보장유량을 보장하는 저수위를 설정하거나 이수용량을 결정하는데 활용될 수 있을 것으로 판단된다.

저레이놀즈수 2차 모멘트 난류모형에 의한 정사각단면의 $180^{\circ}$ 곡덕트 난류유동의 수치해석 (Numerical computation of turbulent flow in a square sectioned $180^{\circ}$ bend by low-Reynolds-number second moment turbulence closure)

  • 신종근;최영돈
    • 대한기계학회논문집B
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    • 제20권8호
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    • pp.2650-2669
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    • 1996
  • A new low Reynolds number nonlinear second moment turbulence closure was introduced to analyze a square sectioned 180.deg. bend flow. Inclusion of nonlinear return to isotropy term and cubic mean pressure strain term has brought out a marked improvement in the level of agreement with measured velocity profiles. Optimization of present closure was performed by comparison of computed velocity profiles with the experimental ones with variation of nonlinear return to isotropy term and quadratic and cubic pressure-strain model. Progressive vortex breakdown due to the interaction of primary and secondary flows was well captured by using the optimized second moment turbulence closure.

3차원 트랜지션을 이용한 광대역 마이크로스트립 패치 안테나의 설계 (A Design of the Wideband Microstrip Patch Antenna Using Three-dimensional Transition)

  • 정창권;강치운;윤서용;이봉석;김우수;이문수
    • 한국정보통신학회논문지
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    • 제3권2호
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    • pp.305-311
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    • 1999
  • 본 논문에서는 유전율 1.06, 두께 $\lambda$/4인 발포체 기판상의 얇은 필름에 인쇄한 새로운 형태의 단일층 마이크로스트립 패치 안테나를 설계했다. 안테나의 대역폭이 광대역 임피던스정합을 얻기 위하여 3차원 트랜지션을 사용한다. 안테나의 방사패턴 및 반사손실, 전압정재파비는 "IE3D" 시뮬레이션 패키지를 사용하여 계산하여 측정결과와 비교했다. 측정 결과 전압정재파비 $\le$ 2:1 인 대역폭이 중심주파수 6.8 GHz에서 약 65%로 광대역 안테나임을 입증하였다. 그리고 반사손실 및 전압정재파비는 계산치와 실험치가 거의 일치하였다. 거의 일치하였다.

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'계획에 없던 재수술' 의 분석 (An analysis of unplanned reoperation)

  • 김은경;조성현;김창엽;오병희
    • 한국의료질향상학회지
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    • 제2권1호
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    • pp.118-124
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    • 1995
  • Background: Clinical indicators are objective measures of process or outcome of patient care in quantitative terms. This study aims to review the medical records of patients who 'return to operating room during the same admission', which is one of the critical clinical outcomes, and describe the result by unplanned reoperation rate. Methods: Computerized patient registry was used for selecting subject conditions. For medical records retrieved, two nurse evaluators identified the presence of explicit reoperation planning in medical records. Results: Overall reoperation rate was 2.8% and unplanned reoperation rate 1.3%. The main category of reoperation cause was the postoperative bleeding. Duration of stay from previous operation to reoperation of the unplanned group, 12.7 days, was shorter than that of the planned(p< .05). The differences did not reach statistical significance in age, sex and length of stay. Conclusion: Results suggested that unplanned reoperation rate was lower than 'threshold' level other institutions had established. However, this result could become comparable only after management of medical records would be improved and risk adjusted.

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관절경적 전방 십자인대 재건술 후의 재활 치료 원칙 (Principle of Rehabilitation after the Arthroscopic Anterior Cruciate Ligament Reconstruction)

  • 경희수;김희수
    • 대한정형외과스포츠의학회지
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    • 제2권1호
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    • pp.6-14
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    • 2003
  • 전방십자인대재건술의목표는안정된관절과 pivot shift 현상을 제거하고, 반월상 연골을 보호하고, 관절운동범위를 유지하고, 술후슬개-대퇴관절의문제를최소화하도록재활하여수상전의운동수준으로복귀시키는것이다. 그래서전방십자인대 재건술은급성기에수술은피하고, 수술 전에재활치료를통하여관절운동범위와 대퇴사두고근의근력을얻은다음, 환자가육체적으로나정신적으로준비가될때까지수술을연기한다. 수술후재활치료는슬관절의완전신전과closed kinetic chain 운동을강조하며, 수술후정기적인방문으로재활치료를지도해주고장기추시해야하는것이중요하다.

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BSC 관점에서 SCM 도입 섬유.패션 기업과 미도입 기업의 성과에 대한 사례 연구 (The Case Study on the Performance between SCM Adopted Textile.Fashion Firms and Unadopted Firms in a Viewpoint of BSC)

  • 신상무;윤재천
    • 복식문화연구
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    • 제17권1호
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    • pp.177-188
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    • 2009
  • SCM as the important marketing strategy enhance the firm's efficiency and compatibility in global market environment such as global outsourcing. Firms adopted SCM realized the need to evaluate precisely the performance of SCM. In spite of importance of SCM, there was not much intention and research to measure SCM performance in textile fashion industry. Therefore, the purpose of this case study was to measure performance of supply chain management in textile fashion business using BSC(Balanced Score Card) to measure not only financial perspective but also non-financial perspectives such as customer perspective, internal business perspectives, financial perspective, and innovation & learning perspective. The questionnaire developed by the reviews of the literature was adopted for this study. The results of this study showed that SCM performance was enhanced from the point of customer perspective(cost, quality, time, service), financial perspective(cash cycle time, inventory turn over, inventory obsolescence, return on asset, return on investment, capacity utilization), and innovation & learning perspective(cost for human resource management, service for human resources). But there was same performance level regarding internal business perspective(lead time, cost for manufacturing process, product quality control, productive flexibility for time, quantity, and variety). Therefore, we should keep close relationship and two way communication among supply chain members to promote better SCM performance.

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Performance Based Seismic Design State of Practice, 2012 Manila, Philippines

  • Sy, Jose A.;Anwar, Naveed;HtutAung, Thaung;Rayamajhi, Deepak
    • 국제초고층학회논문집
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    • 제1권3호
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    • pp.203-209
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    • 2012
  • The purpose of this paper is to present the state of practice being used in the Philippines for the performance-based seismic design of reinforced concrete tall buildings. Initially, the overall methodology follows "An Alternative Procedure for Seismic Analysis and Design of Tall Buildings Located in the Los Angeles Region, 2008", which was developed by Los Angeles Tall Buildings Structural Design Council. After 2010, the design procedure follows "Tall Buildings Initiative, Guidelines for Performance-Based Seismic Design of Tall Buildings, 2010" developed by Pacific Earthquake Engineering Research Center (PEER). After the completion of preliminary design in accordance with code-based design procedures, the performance of the building is checked for serviceable behaviour for frequent earthquakes (50% probability of exceedance in 30 years, i.e,, with 43-year return period) and very low probability of collapse under extremely rare earthquakes (2% of probability of exceedance in 50 years, i.e., 2475-year return period). In the analysis, finite element models with various complexity and refinements are used in different types of analyses using, linear-static, multi-mode pushover, and nonlinear-dynamic analyses, as appropriate. Site-specific seismic input ground motions are used to check the level of performance under the potential hazard, which is likely to be experienced. Sample project conducted using performance-based seismic design procedures is also briefly presented.

The Board Size and Board Composition Impact on Financial Performance: An Evidence from the Pakistani and Chinese's Listed Banking Sector

  • MAJEED, Muhammad Kashif;JUN, Ji Cheng;ZIA-UR-REHMAN, Muhammad;MOHSIN, Muhammad;RAFIQ, Muhammad Zeeshan
    • The Journal of Asian Finance, Economics and Business
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    • 제7권4호
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    • pp.81-95
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    • 2020
  • The main objective of this research is to investigate the impact of board size and board composition on financial performance of banks. The sample of this study consists on two countries listed bank sector Pakistan and China. The annul data is used from 2009-2018 to find the objective of this study. The Panel regression model is used to check the relationship between dependent and independent variables. Return on Asset and Return on Equity is used as performance checker dependent variables. The results of this study confirm board size coefficient value positive for ROA and negative for ROE but shows insignificant behavior for Pakistani banking sector while in Chinese banking sector the coefficient value of board size positively for ROA and ROE at 10% level. The board composition coefficient shows the negatively significant with ROA but insignificantly related to ROE for Pakistani banking sector. However, in Chinese banking sector the coefficient value of board composition is insignificant for both ROA and ROE. This study is helpful for banks, management of banks, policy makers, researcher as well as Government.

Herding Behavior in Emerging and Frontier Stock Markets During Pandemic Influenza Panics

  • LUU, Quang Thu;LUONG, Hien Thi Thu
    • The Journal of Asian Finance, Economics and Business
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    • 제7권9호
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    • pp.147-158
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    • 2020
  • We apply Return Dispersion Model by calculating CSAD (Cross-sectional standard deviation of return) and State Space Model to identify herding behavior in the period of pandemic (H1N1 and COVID-19). Employing data from TEJ and Data Stream, this paper examines whether the herding behavior is existing in Vietnam and Taiwan stock market, especially during pandemic influenza. We compare the differences in herding behavior between frontier and emerging markets by examining different industries across Vietnam and Taiwan stock market approaches. The results indicate solid evidence for investor herd configuration in the various industries of Vietnam and Taiwan. The herding impact in the industries will be greater than with the aggregate market. The different industries respond differently to influenza pandemic panics through uptrend and downtrend demonstrations. Up to 12 industries were found to have herding in Vietnam, while Taiwan had only 5 of 17 industries classified. Taiwan market, an emerging and herding-level market, has changed due to the impact of changing conditions such as epidemics, but not as strongly as in Vietnam. From there, we see that the disease is a factor that, not only creates anxiety from a health perspective, but also causes psychological instability for investors when investing in the market.