• Journal of Korean Society of Water and Wastewater
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• v.34 no.2
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• pp.105-114
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• 2020

In this study, based on the System Dynamics (SD) methodology, the interrelationship between the factors inherent in the operation of the New Technology Certification System (NTCS) in Korea was identified by a causal map containing a feedback loop mechanism in connection with 'new technology development investment', 'commercialization of new technology', and 'sales by new technology'. This conceptualized causal map was applied to the simulation of the operations of the New Excellent Technology and Environmental Technology Verification System (NET&ETV) run by the Ministry of Environment among various NTCSs in Korea. A SD computer simulation model was developed to analyze and predict the operational performance of the NET&ETV in terms of key performance indices such as 'sales by new technology'. Using this model, we predicted the future operational status the NET&ETV and found a policy leverage that greatly influences the operation of the NET&ETV. Also the sensitivity of the key indicators to changes in the external variables in the model was analyzed to find policy leverage.

• Magazine of RCR
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• v.12 no.2
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• pp.50-55
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• 2017

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.399-399
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• 2020

본 연구에서는 시스템다이내믹스(System Dynamics, SD) 방법론에 입각하여 국내의 신기술인증제도(New Technology Certification System, NTCS)의 운영에 내재된 요소들 간의 상호관계를 신기술 개발투자, 신기술의 사업화 및 신기술에 의한 매출과 연관하여 피드백루프 메카니즘을 내포하고 있는 인과지도로 규명하였다. 이렇게 개념화된 인과지도는 국내의 여러 신기술인증제도 중 환경부에서 운영중인 '환경신기술인증 및 기술검증제도(New Excellent Technology and Environmental Technology Verification, NET & ETV)'에 적용되었으며 NET & ETV의 운영 성과를 신기술에 의한 매출액(수주금액)의 관점에서 분석 및 예측할 수 있는 SD 컴퓨터 시뮬레이션 모델이 개발되었다. 개발된 SD 모형은 NET & ETV 운영의 주요 지표에 관한 기존 통계자료를 적절히 모사하였으며 모형의 검증과정에서 시행착오를 통하여 산정된 값들은 NET & ETV의 일반적인 과거 상태를 합리적인 범위 내에서 적절하게 나타내고 있는 것으로 나타났다. 본 연구에서는 개발된 SD모형을 이용하여 기본시나리오에 대한 NET & ETV의 미래 운영 상태를 예측하였으며, 환경신기술의 적용 현장 당 수주금액에 대한 시간 추세선식의 민감도를 발견하였다.

• Proceedings of the Korean Geotechical Society Conference
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• 2010.03a
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• pp.338-350
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• 2010

As existing materials for ground reinforcement, chemical grout material using cementitous materials and waterglass was used. But many problems in terms of ground reinforcement effects were implicated. In this study, for development and applicability verification of new materials, viscosity, fluidity, permeability, Self-Leveling, keeping of drilled hole, antiwashout underwater, resistance of water (groundwater dilution and minimize material eluting) and the early strength and long-term strength characteristics of developed materials was confirmed, and material standards, and establishing construction standards for the various model tests were conducted. As a result, high viscosity, flowability, permeability and keeping of drilled hole characteristics are excellent, in addition to the early strength properties, dilution does nat occur to groundwater, including groundwater is available for dealing with environmental issues. Application of basic and reinforcement method by Filler function in addition to structure can also or development of a new concept can be expected. In addition, middle and large-diameter drilled shaft, micropile, ground anchors, soil-nailing, steel pipes multi-grouting reinforcement for cement injection process could be used enough to even be considered.