• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.292-298
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• 2011

In this study we examine Taiwan's overall performance in accordance with sustainable construction by developing an appraisal indicator framework. The framework consists of five layers, from bottom to top: the indicator; the indicator category; the core cluster; the theme; and the overall performance. The procedure for the development of a sustainable construction indicator system is outlined. Finally, a framework consists of 3 themes, 10 core clusters, and 33 indicator categories are established. Following the established framework, 67 proper indicators are selected for each category in the framework, and data of the 53 indicators are collected respectively from a nation's statistical databank in Taiwan. Sustainable construction index aggregated step-by-step from the indicators, the indicator categories, the core clusters and the themes is computed to assess Taiwan's progress in sustainable construction. The preliminary results and the discussion are reported.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.354-356
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• 2015

As domestic recession has had an adverse impact on many Korean companies in Korea, financial soundness has become a critical issues. It is essential to identify financial risk factors to prevent workout as well as to improve the financial condition of domestic construction companies. Therefore, this study derived important management indicators and the financial ratios that belong to each indicator through a comparative analysis between healthy companies and workout companies with financial statement. As a consequence, key financial ratios are derived into 3 of 25 ratios; Equity Ratio in stability indicator, Total Asset Turnover Ratio in activity indicator, and Labor Equipment Ratio in productivity indicator. So, Korean construction firms are required close monitoring these critical financial ratios indicating variation between construction companies which have opposing statuses in finance in order to keep sound financial condition and increase productivity.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.85-86
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• 2021

KPI, an indicator that measures the performance of factors that contribute to achieving strategies of individuals or organizations, is used a lot to analyze the performance of construction work. Construction work consists of individual construction types with different characteristics such as progress method, scale, and input resources, but currently, KPIs for performance analysis of individual construction types are lacking. Therefore, this study aims to obtain and analyze data for establishing construction performance analysis KPIs during construction work to prepare the basis for the creation of future construction KPIs. Preliminary KPIs for earthwork performance analysis selected through this study are expected to be the basis for deriving preliminary KPIs for other individual construction types.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1340-1345
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• 2009

Ministry of Land, Transportation and Maritime Affairs has implemented Construction CALS project for improving informationization level of construction industry and for making construction production system efficient. Although an importance of evaluation on level and performance of construction informationziation projects has been emerged, Construction CALS hasn't been evaluated so far. In this study, the performance indicators of construction CALS as the most important base in creating a performance management system were deduced. For this aim, this study reviewed the former researches on system construction for managing performance, analyzed current status of Construction CALS, arranged the relationship between upper strategies and ISP, developed pools of performance indicators, and this study followed IT BSC methodology. As a result, this study developed performance indicators of Construction CALS through four strategies such as globalization and activation of Construction CALS standards, research & development for reaching to international level in construction informationization technology, stabilization of system operation and distribution by publicizing Construction CALS and improving its functions, and policy implementation for managing and coordinating Construction CALS projects. These indicators will be applied to build a system of performance management.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1324-1327
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• 2009

Social infrastructure is the basis of public welfare and should be recognized and managed as important assets. Bridge is one of the most important infrastructures to be managed systematically because the impact of the failure is critical. It is essential to monitor the performance of bridges in order to manage them as an asset. But current analytical methods such as predictive modeling and structural analysis are very complicated and difficult to use in practice. To apply these methods, structural and material condition data collection should be performed in each element of bridge. But it is difficult to collect these detailed data in large numbers and various kinds of bridges. Therefore, it is necessary to collect data of major measurement items and predict the life of bridges roughly with advanced information technologies. When certain measurement items reach predefined limits in the monitoring bridges, precise performance measurement will be done by detailed site measurement. This paper describes the selection of major measurement items that can represent the tendency of bridge life and introduces automated bridge data collection test-bed using wireless sensor network technology. The following will be major parts of this paper: 1) Examining the features of conventional bridge management system and data collection method 2) Mileage concept as a bridge life indicator and measuring method of the indicator 3) Test-bed of automated and real-time based bridge life indicator monitoring system using wireless sensor network

• 한국지반신소재학회논문집
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• 제12권3호
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• pp.75-79
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• 2013

동결깊이는 영구 동토지역 및 계절성 동토지역에서 도로의 동상방지층, 매설관의 깊이 및 건물의 기초를 설계하는데 중요한 고려사항이다. methylene blue 동결깊이 측정장치는 지중 온도센서를 이용한 계측시스템과 비교하여 저렴하고 유지관리와 측정이 용이한 장점을 지니고 있다. 그러나 지반공학적 관점에서 지중에 매설된 methylene blue 동결깊이 측정장치의 신뢰성을 검토한 연구는 미미하다. 본 논문에서는 실내실험과 현장실험을 통해 methylene blue 동결깊이 측정장치의 신뢰성을 검토하고, 나아가 국내 현장에서 검증된 측정장치로 장기간 측정된 동결깊이 실측 데이터를 이용하여 최대 동결깊이 분포도를 작성하였다. 본 연구를 바탕으로 실측된 동결깊이는 향후 국내 지반구조물 설계에 중요한 자료로 활용될 수 있을 것으로 판단된다.

• 응용통계연구
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• 제24권5호
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• pp.745-758
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• 2011

An Economic Sentiment Indicator(ESI) is a composite indicator of business survey indices(BSI) and consumer survey indices(CSI). The ESI designed to reflect economic agents' (this includes producers and consumers) overall perceptions of economic activity in a one-dimensional index. The European Commission has published an ESI since 1985. This paper demonstrates the construction of an ESI for the Korean economy. The BSI and CSI components (having a high correlation and a leading feature with respect to GDP) are selected to construct the ESI and they are aggregated using a weighted average and then scaled to have a long-term average of 100 and a standard deviation of 10. Thus values greater than 100 indicate an above-average economic sentiment and vice versa. The newly constructed Korean ESI that extends to January 2003 shows a good tracking performance of GDP and adequately reflects the overall perception of economic activity.

• 한국조사연구학회지:조사연구
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• 제10권1호
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• pp.113-139
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• 2009

건설경기의 순환적 현상을 분석하기 위해서는 연간조사 통계자료의 속성까지 포함된 월별 벤치마킹 건설지표를 사용하는 것이 바람직할 것이다. 왜냐하면 벤치마킹된 지표는 정확성, 일치성, 비교성, 완전성 등의 측면에서 통계품질이 향상된 것으로 기대되기 때문이다. 이 논문에서는 보다 정확한 것으로 간주되는 연간 단위의 통계자료와 단기변동 특성을 보유한 월간 속보지표를 활용하여 월별 건설지표를 추정하는 벤치마킹 방법들을 연구하였다. 벤치마킹이란 연간통계와 월간통계의 일치성을 보장하면서 두 통계의 단기적 및 순환적 현상과 장기추세를 모두 보유하도록 월간통계를 조정하는 방법이다. 벤치마킹 기법으로는 수치조정 접근방법인 비례배분법, 비례덴톤법, BFL BI 비율법, HP - filter BI 비율법과 모형기반 접근방법인 Chow & Lin 방법, $Fem{\acute{a}}ndez$ 방법을 고려하였다. 또한 실제 통계자료를 가지고 벤치마킹된 건설지표를 추정하였으며, 이러한 벤치마킹 방법들을 실증적으로 비교 평가하였다. 계절적 변동 및 불규칙 변동이 심한 건설지표의 경우에 모형기반 접근방법보다는 수치조정 접근방법이 보다 우수한 것으로 평가되었다. 수치조정 접근방법으로는 가장 널리 쓰이고 있는 비례덴톤법이 무난하지만, 연간통계의 조사오차 또는 측정오차를 감안하면 HP - filter BI 비율법도 고려해 볼 수 있을 것이다.

• 환경영향평가
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• 제21권1호
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• pp.93-104
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• 2012

In this research LCA methodology was adapted and analyzed in quantifying estimation of estuarine environment. The analysed objects of estuarine environment were construction methods, facility, and input material into water, and estuarine ecosystem. In this research the function of LCA of estuarine environment was river with the view of controling water, utilizing water, and hydrophilic function. According to the result of research, environmental damage indicator of facility was decreased 346 Pt from 453 Pt at pre-maintenance to 107 pt at post-maintenance. Among raw and subsidiary materials, remicon, stone-netting bag, and pebbles were showing heavy environmental load in the order. Evironmental impact of input material into water system was analyzed from 1,827 Pt environmental load before construction to 1,080 Pt of post-maintenance, and damage indicator was improved at 747 Pt. Water quality was improved from 1,827 Pt (before construction) to 1,080 Pt(after construction), and ecosystem was improved after maintenance. Environmental indicator in ecosystem was analyzed 427 Pt(before construction) to 348 Pt(after construction), and damage indicator of Sumnjingang riverine system was improved as much as 79 Pt. In the conclusion, estuarine environmental monitoring through LCA in the area of facility, input material into water and ecosystem showed that close-to-nature stream was 1,172 Pt better than artificial stream in environmental aspects.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.523-526
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• 2007

국내 건설산업은 활발한 해외시장 개척 및 정부의 주택보급정책 등에 의해 양적인 성장을 이루어 왔으나 최근 경쟁력 중심의 새로운 전략적 성장에 대한 관심이 높아지면서 공공건설사업의 성과측정을 필요로 하게 되었다. 현재 건설공사 완료 후 타당성 분석결과를 검증하고 공사내용 및 효과를 조사 ${\cdot}$분석하여 향후 유사 건설사업에 활용하기 위하여 2000년 3월부터 ${\lceil}$건설기술관리법 시행령 제 38조의18${\rfloor}$ 및 ${\lceil}$건설공사 사후평가 시행지침('01.05.10, 건관 58824 -318)${\rfloor}$에 의한 '건설공사 사후평가'제도를 제정하여 시행하고 있으나 이에 대한 인식도 및 활용도가 미미한 실정이다. 따라서 본 연구에서는 건설공사 사후평가시스템을 추후 유사 공사에 적극적으로 활용 될 수 있도록 평가항목 및 절차에 대한 개선방안 및 예비평가항목을 제시하였다.