• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2022년도 춘계학술대회
• /
• pp.201-203
• /
• 2022

Increasing global market of used electric vehicle (EV) battery encourages international firms to establish its subsidiary companies or business units specializing in battery recycling. Such kind of companies predominantly use closed loop supply chain (CLSC) for their operations of battery manufacturing and used battery recycling/reusing in global scale. However, EV battery recycling, as a relatively new industry, makes its global CLSC be exposed to various types of risks, which leads to inefficiency of supply processes and makes supply chains more complicated and vulnerable. Identifying, evaluating, and analyzing possible risks in CLSC has a great importance for optimization and increasing effectiveness for the global supply chain of used EV battery. Itwill assist to elaborate the efficient CLSC management and possible risk mitigation strategies to keep the global EV battery supply chain resilient and sustainable. This study aims to develop a conceptual framework for risk assessment in this new sector. Therefore, it will populate the framework with possible failure modes identified from various literature on EV battery recycling and closed loop supply chains so that future research can validate and utilize the conceptual framework.

• 환경영향평가
• /
• 제5권2호
• /
• pp.79-91
• /
• 1996

In Chapter 40, "Information for decision-making", of Agenda 21, it was Slated that, "indicators of sustainable development need to be developed to provide solid bases for decision-making at all levels and to contribute to a self-regulating sustainability of integrated environment and development systems." Sustainable development has been defined as "development that meets the needs of the present without compromising the ability of future generations to meet their own needs", An indicator that measures sustainability should therefore focus on this definition. One of the most widely used frameworks for environmental indicators is the Pressure-State-Response model proposed by the OECD. And we introduced the the Driving force-State-Response framework, the adaptation of Pressure-State-Response model, for UN sustainable development indicators. Therefore, in our country, indicators for sustainable development should be developed by using the DSR framework.

• Nuclear Engineering and Technology
• /
• 제49권2호
• /
• pp.411-425
• /
• 2017

Using a probabilistic safety assessment, a risk evaluation framework for an aircraft crash into an interim spent fuel storage facility is presented. Damage evaluation of a detailed generic cask model in a simplified building structure under an aircraft impact is discussed through a numerical structural analysis and an analytical fragility assessment. Sequences of the impact scenario are shown in a developed event tree, with uncertainties considered in the impact analysis and failure probabilities calculated. To evaluate the influence of parameters relevant to design safety, risks are estimated for three specification levels of cask and storage facility structures. The proposed assessment procedure includes the determination of the loading parameters, reference impact scenario, structural response analyses of facility walls, cask containment, and fuel assemblies, and a radiological consequence analysis with dose-risk estimation. The risk results for the proposed scenario in this study are expected to be small relative to those of design basis accidents for best-estimated conservative values. The importance of this framework is seen in its flexibility to evaluate the capability of the facility to withstand an aircraft impact and in its ability to anticipate potential realistic risks; the framework also provides insight into epistemic uncertainty in the available data and into the sensitivity of the design parameters for future research.

• 한국빅데이터학회지
• /
• 제6권1호
• /
• pp.13-22
• /
• 2021

본 연구의 목적은 기업의 효과적인 데이터 전략 수립과 효율적 투자를 위해 빅데이터 성숙도를 평가하기 위한 프레임워크를 개발하고 이를 실증하는데 있다. 이를 위해 현재까지 개발된 평가의 단점을 보완하여, 기업의 빅데이터 성숙도를 프로세스 통합적으로 평가할 수 있는 프레임워크를 개발하였다. 그 결과 '비전과 전략', '관리', '분석', '활용'의 4가지 평가 영역과 각 영역별 평가항목, 세부내용 및 단계별 준거를 도출하였다. 이를 기업인 설문을 통해 실증하였으며 국내 기업의 빅데이터 성숙도를 진단하였다. 향후 연구방향으로 산업별 특성에 따른 세부 평가요소 개발, 평가 결과에 따른 데이터 활용 프레임워크의 발전, 검증 대상의 조정을 통한 추가적인 타당성 및 신뢰도 향상을 제안하였다.

• 한국국방기술학회 논문지
• /
• 제5권2호
• /
• pp.23-30
• /
• 2023

TRA(Technology Readiness Assessment)는 현재의 국내 기술수준을 정량적으로 평가하여 국내 연구개발 가능성에 대한 판단과 위험관리를 위한 핵심도구로 활용되고 있다. 하지만 현재의 TRA는 하드웨어 중심의 TRL(Technology Readiness Level)을 활용하기 때문에 개별기술의 독립적 평가에는 적합하나 체계관점의 평가에는 한계가 있다. 또한 체크리스트 방식의 평가는 주관적 평가 개입 가능성이 크다. 본 연구는 체계공학의 시스템통합 관점에서 TRA 절차와 기준을 재정의하여 개선된 TRA 프레임워크를 제안한다. 현재의 TRL과 TRA가 가진 한계를 극복하고 좀더 쉽고 직관적인 평가가 가능한 프레임워크 개발에 중점을 두었다. 제안 프레임워크는 HW, SW 및 인터페이스 관점에서 TE(Technology Element)와 CTE(Critical Technology Element)를 구분하고 TRL을 재정의 한다. TRA는 위 3가지 관점에서 재정의된 TRL에 따라 수행되고 위험관리를 고려하여 가장 낮은 평가결과를 시스템 수준의 성숙도로 활용한다. 제안된 CTE 선정방법은 주요 ROC(Required Operational Capability)의 정량목표, 개발난이도 및 COTS(Common Off The Shelf) 기술의 적용여부를 활용하여 평가자 주관의 개입을 최소화 한다. 본 프레임워크는 TSS(Target Surveillance System) 체계의 Case Study를 통해 실효성을 확인하였다. 본 연구를 시작으로 프레임워크 차원의 연구가 활성화 되어 TRA 제도 개선에 기여하길 바란다.

• 국제학술발표논문집
• /
• The 6th International Conference on Construction Engineering and Project Management
• /
• pp.730-731
• /
• 2015

This study aims at giving the framework to estimate the environmental load at planning and schematic phase. With increasing awareness of environmental issues, the effort to reduce the environmental impacts caused by human activity has been increasingly enlarged. So far most of researches estimating CO₂ emissions have analyzed energy consumption based on BOQ (Bills of Quantity) acquired after detailed design. There is also lack of reliability in the estimated environmental impact using the basic unit of a facility at the planning stage, because it uses a limited specific section of historical data. Thus, this study is targeted at developing framework to assess reliable environmental loads based on information available at project early phases by making case-bases from historical design information on PSC Beam Bridge. Historical database is built on the basis of the LCA (Life Cycle Assessment) and in order to set input information for estimating model, the literature about information in an early project phase are reviewed. Using the information available in the planning and schematic design stage, the Framework is presented to estimate the environmental load in an early stage in the project. Developing an environmental load estimation model in accordance with the Framework presented in this study, it is expected that the environmental load in the initial project phase can be estimated more quickly and accurately.

• Nuclear Engineering and Technology
• /
• 제47권4호
• /
• pp.461-471
• /
• 2015

Recently, the estimation of the social cost of energy sources has been emphasized as various novel energy options become feasible in addition to conventional ones. In particular, the social cost of introducing measures to protect power-distribution systems from power-source instability and the cost of accident-risk response for various power sources must be investigated. To account for these risk factors, an integrated societal risk assessment framework, based on power-uncertainty analysis and accident-consequence analysis, is proposed. In this study, we applied the proposed framework to nuclear power plants, solar photovoltaic systems, and wind-turbine generators. The required capacity of gas-turbine power plants to be used as backup power facilities to compensate for fluctuations in the power output from the main power source was estimated based on the performance indicators of each power source. The average individual health risk per terawatt-hours (TWh) of electricity produced by each power source was quantitatively estimated by assessing accident frequency and the consequences of specific accident scenarios based on the probabilistic risk assessment methodology. This study is expected to provide insight into integrated societal risk analysis, and can be used to estimate the social cost of various power sources.

• Journal of Advanced Marine Engineering and Technology
• /
• 제27권6호
• /
• pp.687-695
• /
• 2003

• 환경영향평가
• /
• 제9권3호
• /
• pp.185-202
• /
• 2000

Uncertainty and variability in Life Cycle Assessment(LCA) have been significant key issues in LCA methodology with techniques in other research area such as social and political science. Variability is understood as stemming from inherent variations in the real world, while uncertainty comes from inaccurate measurements, lack of data, model assumptions, etc. Related articles in this issues were reviewed for classification, distinguish and elaboration of probabilistic/stochastic health risk analysis application in LCA. Concept of focal zone, streamlining technique, scenario modelling and Monte Carlo/Latin Hypercube risk analysis were applied to the uncertainty/variability analysis of health risk in LCA. These results show that this general framework of multi-disciplinary methodology between probabilistic health risk assessment and LCA was of benefit to decision making process by suppling information about input/output data sensitivity, health effect priority and health risk distribution. There should be further research needs for case study using this methodology.

• 한국환경복원기술학회지
• /
• 제21권4호
• /
• pp.75-86
• /
• 2018

This research was thereby made to study and analysis ecological, landscape, and stability qualities of roadside cut Slopes in expressways and national highways that went through revegetation works. Also, evaluation items and framework for integrated assessment of plant structure and restored state for the maintenance were suggested. Following is the summary of the result. firstly, for stabilization of introduced native plant species on roadside cut slops, assessment on the post-project environmental management through long-term monitoring and maintenance works must be made. It signifies a form of authentic recovery and restoration by the native plants. second, current evaluation framework on the test beds is well managed with clear evaluation standards and table while its method of assessing the post management with only test bed results lacks conformity with this study site. Newly developed evaluation framework on the post construction sites is estimated to be used as assessment standards on any roadside construction sites. Third, after site investigation distinction was observed among different revegetating construction types in the long-term perspective. Due to the different duration time of vegetation state between seed-spray measures(degraded in time) and layer-spray measure(maintained), the use of coarse straw-mat mulching work or Coir net was suggested in long term maintenance of cut slopes. forth, segmentation of post environmental assessment is organized into three large categories of "ecological", "stabile", and "landscape" qualities regarding post restoration quality and stability of slope through native plants with which categories marks 50, 30, 20 points of rates. fifth, components of the post environmental assessment were segmented in twelve categories driving results from former experimental construction and newly focused items on site. In the future, it is possible to propose a customized assessment method considering the location and location of construction work if the research on the application of post-environment assessment methods for road construction surface recording is conducted systematically.