• 제목, 요약, 키워드: vulnerability assessment

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도시계획 적용을 위한 도시홍수 취약성 및 리스크 평가 (Urban Flood Vulnerability and Risk Assessments for Applying to Urban Planning)

  • 이상혁;강정은
    • 국토계획
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    • v.53 no.5
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    • pp.185-206
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    • 2018
  • This study conducted two flood assessments and compared their methods, procedures, and outcomes for applying to urban planning: a flood vulnerability assessment in accordance with the Climate Change Vulnerability Assessment adopted by the government and a probabilistic risk assessment stressed by IPCC. The flood vulnerability assessment employed the indicator method based on the manual and guidelines. The probabilistic risk was defined as a product of the probability of occurrence and its effect. It used Markov Chain Monte Carlo (MCMC) simulation, which is effective in random number generation and machine learning based on the Bayesian concept. The results of two evaluations focused on Busan show that while spatial distributions of risk areas are quite similar, risk area calculated by flood vulnerability assessment is a little larger than risk assessment due to different units of analysis, used data, and assessment methodology. Risk assessment provides more accurate results, but assessment method is complicated, while vulnerability assessment is easy to use, results cannot be quantitatively validated. Therefore, the combination of vulnerability and risk assessment is considered meaningful as it could improve existing flood assessments and contribute to decision making to establish safer cities.

폭염과 가뭄을 위한 기후변화 취약성 평가 데이터베이스 시스템 설계 (Design of Climate Change Vulnerability Assessment Database System for Heat wave and Drought)

  • 정은화;김철원;박종훈
    • 한국전자통신학회논문지
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    • v.13 no.4
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    • pp.813-818
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    • 2018
  • 본 논문에서는 가뭄에 의한 용수, 가뭄에 의한 수질과 폭염에 의한 온열질환에 대한 취약성 평가 항목에 대한 선정 배경을 기술하였고, 선정된 취약성 평가 항목에 대해 취약성 평가 가중치 산정을 수행하였다. 또한 취약성 평가절차에서는 단계적으로 적용되는 계산 방법과 실제 사례를 함께 서술하였다. 취약성 평가 데이터베이스 구축에 대해 분석하고, 이러한 취약성 평가 절차를 적용한 폭염과 가뭄을 위한 기후변화 취약성 평가 시스템을 설계하였다.

기후변화 대비 강원 지역 산림부문 현황 분석 및 취약성 평가 (Vulnerability Assessment and Analysis of Gangwon Provincial Forest Sector in Response to Climate Change)

  • 채희문;이현주;엄기증
    • Journal of Forest and Environmental Science
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    • v.28 no.2
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    • pp.106-117
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    • 2012
  • In an effort to analyze the impact of climate change, Gangwon provincial forest was divided into three sectors; forest ecology, forest disaster, and forest productivity and analysis of their current status from 2000 to 2009 and vulnerability assessment by climate change has been carried in this study. In case of vulnerability assessment, except for the forest ecology, forest disaster (forest fires and forest pests) and forest productivity sectors were analyzed in current status, the year of 2020, and 2050. It turned out that vulnerability of forest fires in the field of disaster would become worse and forest pests also would make more impact even though there is some variation in different areas. In case of the vulnerability of forest productivity there would be not a big difference in the future compared with current vulnerability. Systematic research on the sensitivity index used for vulnerability assessment is necessary since vulnerability assessment result greatly depends on the use of climate exposure index and adaptive capacity index.

A Cost-Optimization Scheme Using Security Vulnerability Measurement for Efficient Security Enhancement

  • Park, Jun-Young;Huh, Eui-Nam
    • Journal of Information Processing Systems
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    • v.16 no.1
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    • pp.61-82
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    • 2020
  • The security risk management used by some service providers is not appropriate for effective security enhancement. The reason is that the security risk management methods did not take into account the opinions of security experts, types of service, and security vulnerability-based risk assessment. Moreover, the security risk assessment method, which has a great influence on the risk treatment method in an information security risk assessment model, should be security risk assessment for fine-grained risk assessment, considering security vulnerability rather than security threat. Therefore, we proposed an improved information security risk management model and methods that consider vulnerability-based risk assessment and mitigation to enhance security controls considering limited security budget. Moreover, we can evaluate the security cost allocation strategies based on security vulnerability measurement that consider the security weight.

Vulnerability Assessment of a Large Sized Power System Using Neural Network Considering Various Feature Extraction Methods

  • Haidar, Ahmed M. A;Mohamed, Azah;Hussian, Aini
    • Journal of Electrical Engineering and Technology
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    • v.3 no.2
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    • pp.167-176
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    • 2008
  • Vulnerability assessment of power systems is important so as to determine their ability to continue to provide service in case of any unforeseen catastrophic contingency such as power system component failures, communication system failures, human operator error, and natural calamity. An approach towards the development of on-line power system vulnerability assessment is by means of using an artificial neural network(ANN), which is being used successfully in many areas of power systems because of its ability to handle the fusion of multiple sources of data and information. An important consideration when applying ANN in power system vulnerability assessment is the proper selection and dimension reduction of training features. This paper aims to investigate the effect of using various feature extraction methods on the performance of ANN as well as to evaluate and compare the efficiency of the proposed feature extraction method named as neural network weight extraction. For assessing vulnerability of power systems, a vulnerability index based on power system loss is used and considered as the ANN output. To illustrate the effectiveness of ANN considering various feature extraction methods for vulnerability assessment on a large sized power system, it is verified on the IEEE 300-bus test system.

GIS 및 계층분석법을 이용한 지하수 오염 취약성 평가 및 관리 우선 대상 지역 평가 (An Assessment of Groundwater Contamination Vulnerability and Priority Areas for Groundwater Management Using GIS and Analytic Hierarchy Process)

  • 이명진;현윤정;황상일
    • 한국지리정보학회지
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    • v.18 no.3
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    • pp.35-51
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    • 2015
  • 본 연구는 기존의 지하수 오염 취약성 평가 방법을 개선하고, 연구지역에 적용하여 보다 정량적인 지하수 오염 취약성 분석을 기반으로 지하수 관리 우선 대상 지역을 선정하는 것이다. 이를 위하여 첫째, 기존의 '잠재오염' 중심의 지하수 오염 취약성 평가 방법을 오염을 완화시키는 '대응 능력'을 고려한 방법론으로 개선하였다. 둘째, 계층분석 방법(AHP)과 지하수 전문가의 설문을 바탕으로 지하수 오염 취약성 평가 인자의 가중치를 산정하였다. 셋째, 광역지자체(경기도)를 연구지역으로 선정하고 개선된 방법론 및 가중치를 GIS로 구현하여 실제 지하수 오염 취약성 평가를 수행하였다. 넷째, 정량적 지하수 오염 취약성 평가도를 바탕으로 지하수 오염 관리 우선 대상 지역을 선정하였다. 본 연구에서 개선된 지하수 오염 취약성 평가 세부 평가인자는 총 15개 이며, 이에 대한 AHP를 활용한 가중치의 산정결과에서 기존의 '잠재오염'에 해당하는 평가인자 보다 신규로 개선된 '대응능력'이 높은 가중치로 분석되었다. 또한 GIS를 활용한 경기도 지역의 지하수 오염 취약성 평가 결과 서울에 인접한 고양시 및 광명시 등이 지하수 오염 취약성이 높았으며, 포천시 및 양평군이 상대적으로 취약성이 낮은 것으로 분석되었다. 본 연구에서는 기존의 지하수 오염 취약성 평가를 개선하였고 실제 연구지역에 적용하였다. 본 연구의 결과는 향후 국가 및 지자체 차원의 지하수 관리 기본계획에 직간접적으로 활용이 가능할 것으로 판단된다.

읍면 단위 도서지역의 가뭄 취약성 평가 (Vulnerability assessment of drought of small island areas in Korea)

  • 심인태;홍봉창;김은주;황태문
    • 상하수도학회지
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    • v.33 no.5
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    • pp.341-351
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    • 2019
  • The purpose of this study was to evaluate vulnerability of drought in small island areas. Vulnerability assessment factors of drought were selected by applying the factor analysis. Ninety Eup/Myon areas in small island were evaluated to vulnerability of drought by entropy method adapting objective weights. Vulnerability consisted of climate exposure, sensitivity, and adaptive capacity. A total of 22 indicators were used to evaluate and analyze vulnerability of drought in small island areas. The results of entropy method showed that winter rainfall, no rainfall days, agricultural population rate, cultivation area rate, water supply rate and groundwater capacity have a significant impact on drought assessment. The overall assessment of vulnerability indicated that Seodo-myeon Ganghwa-gun, Seolcheon-myeon Namhae-gun and Samsan-myeon Ganghwa-gun were the most vulnerable to drought. Especially Ganghwa-gun should be considered policy priority to establish drought measures in the future, because it has a high vulnerability of drought.

기후변화 취약성 평가 분석도구 개발에 관한 연구: 충남지역 산불 취약성을 중심으로 (Development of a Climate Change Vulnerability Assessment Analysis Tool: Based on the Vulnerability Assessment of Forest Fires in Chungcheongnam-do)

  • 윤수향;이상신
    • 한국기후변화학회지
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    • v.8 no.3
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    • pp.275-285
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    • 2017
  • Chungnam region has established and executed the 2nd Climate Change Adaptation Initiative Execution Plan (2017~2021) based on the Framework Act on Low Carbon, Green Growth. The Execution Plan is established based on the results of climate change vulnerability assessment using the CCGIS, LCCGIS, and VESTAP analysis tools. However, the previously developed climate change vulnerability assessment tools (CCGIS, LCCGIS, VESTAP) cannot reflect the local records and the items and indices of new assessment. Therefore, this study developed a prototype of climate change vulnerability assessment analysis tool that, unlike the previous analysis tools, designs the items and indices considering the local characteristics and allows analysis of grid units. The prototype was used to simulate the vulnerability to forest fires of eight cities and seven towns in Chungcheongnam-do Province in the 2010s, 2020s, and 2050s based on the RCP (Representative Concentration Pathways) 8.5 Scenario provided by the Korea Meteorological Administration. Based on the analysis, Chungcheongnam-do Province's vulnerability to forest fires in the 2010s was highest in Seocheon-gun (0.201), followed by Gyeryong-si (0.173) and Buyeo-gun (0.173) and the future prospects in the 2050s was highest in Seocheon-gun (0.179), followed by Gyeryong-si (0.169) and Buyeo-gun (0.154). The area with highest vulnerability to forest fires in Chungcheongnam-do Province was Biin-myeon, Seocheon-gun and the area may become most vulnerable was Pangyo-myeon, Seocheon-gun. The prototype and the results of analysis may be used to establish the directions and strategies in regards to the vulnerability to wild fires to secure each local government's 2nd execution plan and attainability.

Climate Change Adaptive Implementation Assessment Proposal for Local Governments Utilizing Vulnerability Index

  • Lee, Sangsin
    • Journal of Forest and Environmental Science
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    • v.35 no.1
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    • pp.47-53
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    • 2019
  • This study applies the concept of climate change vulnerability assessment in order to suggest climate change adaptation effects in a quantitative manner, given that previous studies have hitherto rely on qualitative assessment, as climate change adaptive policies are currently being implemented by local governments of Korea. The vulnerability assessment tool used in this study is VESTAP ("Vulnerability assESsment Tool to build a climate change Adaptation Plan"), which was developed by the Korea Adaptation Center for Climate Change (KACCC), and applied to gauge the vulnerability of pine trees to diseases and pests within Chungcheongnam-do. The climate change adaptation project for vulnerability improvement was assessed only in terms of forest disaster prevention and change in regional climate change vulnerabilities within 16 regions of Chungcheongnam-do as the result of 2016 Climate Change Adaptation Project (Forest Disaster Prevention Project). As a result, it was observed that climate change adaptive capacity has improved according to change in the area of forestland with disaster prevention, and the vulnerability indicator decreased, confirming the impact of the climate change adaptation (forest disaster prevention) project. Also, analysis of regional climate change adaptation project scales and change in vulnerabilities allowed us to determine the regional propriety of climate change adaptation (forest disaster prevention) projects launched in 2016.

가상화 환경에서 호스트 기반 취약점 분석 시스템을 위한 효율적인 에이전트 프레임워크 (An Efficient Agent Framework for Host-based Vulnerability Assessment System in Virtualization Environment)

  • 양진석;정태명
    • 정보처리학회논문지:컴퓨터 및 통신 시스템
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    • v.3 no.1
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    • pp.23-30
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    • 2014
  • 본 논문에서는 가상화 환경에서 호스트 기반 취약점 분석 시스템의 에이전트 프레임워크를 제안한다. 기존 호스트 기반 취약점은 점검 대상 시스템에 에이전트를 반드시 설치하여 운용해야만 했지만 제안한 에이전트 프레임워크는 점검 대상 가상머신에 에이전트를 복사 및 실행하는 개념을 가진다. 본 논문에서는 가상화 환경에서 호스트 기반 취약점 분석 시스템 에이전트 프레임워크를 수립하였으며 점검 시나리오를 기술하고 해당 시나리오에 대한 파일럿 시스템을 개발하였다. 제안하는 에이전트 프레임워크는 점검 대상 시스템 추가 시에도 에이전트의 추가 설치가 없어 시스템 확장성을 극대화하였으며 에이전트의 불필요한 자원 낭비 등 기존 시스템의 단점을 개선하였다.