• Title/Summary/Keyword: Area of Vulnerability

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Grid Unit Based Analysis of Climate Change Driven Disaster Vulnerability in Urban Area (격자단위 분석기법을 적용한 도시 기후변화 재해취약성분석)

  • Hong, Jeajoo;Lim, HoJong;Ham, YoungHan;Lee, ByoungJae
    • Spatial Information Research
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    • v.23 no.6
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    • pp.67-75
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    • 2015
  • Today, because human settlements are concentrated into urban area, urban planning and management technique considering the complexity, diversity, and advanced situations of urban living space is being requested. Especially, to effectively respond to large and diverse climate change driven disaster, it is necessary to develop urban planning technique including land use, infrastructure planning based on disaster vulnerability analysis. However, because current urban climate change disaster vulnerability analysis system(UC-VAS) is using census output area as spatial analysis unit, it is difficult to utilize the analysis results for specific urban planning. Instead, this study applies the grid manner to two study areas. The analysis results show that it can generate more detailed results and it can be used for detailed zoning decision by comparing with areal photos. Furthermore, by describing the limitation of the grid manner and providing professional way to secure additional scientific character and objectivity of the future urban climate change disaster vulnerability analysis system, it is expected that this study contributes to the effectiveness of system management.

Evaluation of waste disposal site using the DRASTIC system in Southern Korea

  • Lee, S.
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.126-128
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    • 2003
  • As a systematic approach to waste disposal site screening for groundwater pollution protection, the DRASTIC system developed by the US Environmental Protection Agency (USEPA) was introduced at Younggwang County in Korea. Hydrogeologic spatial databases for the system include info rmation on depth to water, net recharge, aquifer media, soil media, topographic slope, hydraulic conductivity and lineament. Using the databases, the DRASTIC system and a GIS, the regional groundwater pollution vulnerability of the study area was assessed. The fracture density extracted from lineament maps was added to the DRASTIC system to take into account the preferential migration of contaminants through fractures. From the results of the study, a degree of groundwater pollution vulnerability through the study area was easily interpreted, and waste disposal sites could be screened for groundwater protection.

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A Study on the Changes of Flood Vulnerability in Urban Area Using One-Way Error Component Regression Model (One-Way Error Component Regression Model을 활용한 도시지역 수재해 취약성 변화의 실증연구)

  • Choi, Choong-Ik
    • Journal of Environmental Policy
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    • v.3 no.2
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    • pp.89-112
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    • 2004
  • This Study aims to demonstrate how much flood vulnerability in urban area changed for the past 32 years by using the panel model. At the same time, this study strives to determine the primary factors and to construct an effective counter-plan by means of empirical research. After selecting research hypotheses based on considerations of issues concerning causes for urban flooding, their relevance is put to the test by conducting empirical research in individual case locations. This research verifies the four research hypotheses by using one-way error component regression model. In conclusion, this research has shown that urban land use and local characteristics act as significant flood determinants, with forests acting to reduce flood dangers. Moreover, constructing embankments can no longer represent a reliable flood control policy. The changes in future flood control policies need to incorporate local characteristics and to minimize natural destruction, so that humans and nature can coexist through environmentally friendly flood management policies.

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Analyzing the Disaster Vulnerability of Mt. Baekdusan Area Using Terrain Factors (지형 요소를 고려한 백두산 지역의 위험도 분석)

  • Choi, Eun-Kyeong;Kim, Sung-Wook;Lee, Young-Cheol;Lee, Kyu-Hwan;Kim, In-Soo
    • Journal of the Korean earth science society
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    • v.34 no.7
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    • pp.605-614
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    • 2013
  • Most steep slope failures tend to take place in geographically unstable areas. Mt. Baekdusan is known as a potentially active volcano in a typical mountainous terrain. This study prepared a digital elevation model of Mt. Baekdusan area and created a hazard map based on topographical factors and structural lineament analysis. Factors used in vulnerability analysis included geographical data involving aspect and slope distribution, as well as contributory area of upslope, tangential gradient curvature, profile gradient curvature, and the distribution of wetness index among the elements that comprise topography. In addition, the stability analysis was conducted based on the lineament intensity map. Concerning the disaster vulnerability of Mt. Baekdusan region, the south and south west area of Mt. Baekdusan has a highest risk of disaster (grade 4-5) while the risk level decreases in the north eastern region.

An Analysis on the Spatial Patterns of Heat Wave Vulnerable Areas and Adaptive Capacity Vulnerable Areas in Seoul (서울시 폭염 취약지역의 공간적 패턴 및 적응능력 취약지역 분석)

  • Choi, Ye Seul;Kim, Jae Won;Lim, Up
    • Journal of Korea Planning Association
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    • v.53 no.7
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    • pp.87-107
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    • 2018
  • With more than 10 million inhabitants, in particular, Seoul, the capital of Korea, has already experienced a number of severe heat wave. To alleviate the potential impacts of heat wave and the vulnerability to heat wave, policy-makers have generally considered the option of heat wave strategies containing adaptation elements. From the perspective of sustainable planning for adaptation to heat wave, the objective of this study is to identify the elements of vulnerability and assess heat wave-vulnerability at the dong level. This study also performs an exploratory investigation of the spatial pattern of vulnerable areas in Seoul to heat wave by applying exploratory spatial data analysis. Then this study attempts to select areas with the relatively highest and lowest level of adaptive capacity to heat wave based on an framework of climate change vulnerability assessment. In our analysis, the adaptive capacity is the relatively highest for Seongsan-2-dong in Mapo and the relatively lowest for Changsin-3-dong in Jongno. This study sheds additional light on the spatial patterns of heat wave-vulnerability and the relationship between adaptive capacity and heat wave.

Knowledge, Attitudes and Perceived Vulnerability to AIDS of Medical and Nursing Students (의학계열 대학생의 에이즈에 대한 지식, 태도 및 취약성 인지정도)

  • Sung, Mi-Hae
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.15 no.2
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    • pp.221-228
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    • 2008
  • Purpose: The purpose of this study Is to identify the knowledge, attitudes and perceived vulnerability to AIDS of medical and nursing students. Method: The subject of this study were 324 medical and nursing students in Busan area. Data was analyzed by using descriptive statistics, t-test, ANOVA, Pearson correlation coefficient, and Scheffe's test. Result: Total knowledge of AIDS was average. Total attitudes of AIDS was above average. And perceived vulnerability of AIDS was above average. According to the results of analyzing the difference between general characteristics of the subject and AIDS related knowledge, attitudes and perceived vulnerability, a significant difference was present with grade in knowledge score; with sex, grade, department, and health status in attitudes score, with sex, religion, grade, department, education experience to AIDS, and health status in perceived vulnerability to AIDS, There was a significant relationship between attitudes and perceived vulnerability to AIDS. Conclusion: The research findings show that the educational program for preventing AIDS must take into consideration knowledge and epidemic and non-epidemic aspects of AIDS and preventive attitudes toward AIDS, And, it also proves that it is necessary to devise an AIDS educational program for college students.

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Evacuation and Sheltering Assistance for Persons with Special Needs at Times of Disaster: Lessons Learned from Typhoon 23, Heavy Rainfall and Earthquake Disasters in the Year 2004

  • Tatsuki, Sshigeo
    • 한국방재학회:학술대회논문집
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    • 2009.02b
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    • pp.36-42
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    • 2009
  • A series of heavy rainfall, typhoon and earthquake disasters caused a proportionately large number of deaths among the elderly in the year 2004 in Japan. In response to these tragedies, the national government set up committees to reduce damage within the disaster vulnerable population for the next three years. The discussions in the committee led to a new conceptualization that disaster vulnerability was caused by a lack of interaction between a person's special needs and the environment's capacity and resources to meet them. This person-in-environment model of hazard vulnerability was applied to those who resided in the Nankai-Tonankai tsunami hazard-prone area. 123 home care service users were interviewed in terms of their self-evacuation ability, degree of social isolation, and building weakness as well as tsunami exposure risks. Results were quantified and scores of person-in-environmentmodel hazard vulnerability were obtained. These scores were then used to visualize socially created vulnerability by means of weighted kernel density mapping of both persons with special needs (PSN's) and persons with special needs at times of disaster (PSND's).

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Assets, Risks and Vulnerability to Poverty Traps: A Study of Northern Region of Malaysia

  • Senadjki, Abdelhak;Mohd, Saidatulakmal;Bahari, Zakaria;Hamat, Abdul Fatah Che
    • The Journal of Asian Finance, Economics and Business
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    • v.4 no.4
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    • pp.5-15
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    • 2017
  • The Northern States of Malaysia comprises of four states (Penang, Kedah, Perlis and Perak) still record high poverty incidence eventhough Malaysia has experienced a remarkable reduction of poverty over the past century. Economic activities in Perlis and Kedah that are predominantly agriculture in the rural area contribute to this disparity. To add, rural households are also subject to risks and uncertainties that make them more vulnerable to poverty. This study examines the impact of risks and assets on households' vulnerability to poverty. A survey of 400 respondents was conducted in December 2015 in the northern region of Malaysia. From these 400 questionnaires, only 298 were considered valid and used in the analysis. Using a logistic probability function, the results indicated that risks are not a significant threat to households. Gender and strata are crucial elements that significantly determine households' vulnerability. While human capital and financial capital significantly reduce households' vulnerability to poverty, physical and natural capitals were not statistically significant. The study suggests that the government and practitioners design strategies and policies with an assets-based approach. The asset-based approach is more appropriate for linking the causes of poverty to vulnerability.

Analysis of Characteristic of Debris Flow with Angle of Slope (흐름 경사면의 경사도에 따른 토석류 흐름의 특성 분석)

  • Lee, Jun Seon;Song, Chang Geun;Lee, Seung Oh
    • Journal of the Korean Society of Safety
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    • v.31 no.2
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    • pp.49-56
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    • 2016
  • In Korea, there exist many mountains, and sudden storms occur during the summer season. When severe rainstorm events occur in steep slope topography, risk of debris flow is increased. Once debris flow occurs in urban area, it may cause casualties and physical damages due to rapid debris flow velocity along a steep slope. Accordingly, preventing method of sediment-related disaster for demage mitigation are essential. Recently, various studies on debris flow have been conducted. However, the prediction of the physical propagation of debris flow along the steep slope was not thoroughly investigated. Debris flow is characterized by various factors such as topography, properties of debris flow, amount of debris flow. In the study the numerical simulation was focused on the topographic factor. Fundamental analysis of the risk area was implemented with emphasis on the propagation length, thickness, and the development of maximum velocity. The proposed results and the methodology of estimating the structural vulnerability would be helpful in predicting the behavior and the risk assessment of debris flow in urban area. These results will be able to estimate the vulnerability of urban areas affected the most damage by debris flow.

A Out-of-Bounds Read Vulnerability Detection Method Based on Binary Static Analysis (바이너리 정적 분석 기반 Out-of-Bounds Read 취약점 유형 탐지 연구)

  • Yoo, Dong-Min;Jin, Wen-Hui;Oh, Heekuck
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.31 no.4
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    • pp.687-699
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    • 2021
  • When a vulnerability occurs in a program, it is documented and published through CVE. However, some vulnerabilities do not disclose the details of the vulnerability and in many cases the source code is not published. In the absence of such information, in order to find a vulnerability, you must find the vulnerability at the binary level. This paper aims to find out-of-bounds read vulnerability that occur very frequently among vulnerability. In this paper, we design a memory area using memory access information appearing in binary code. Out-of-bounds Read vulnerability is detected through the designed memory structure. The proposed tool showed better in code coverage and detection efficiency than the existing tools.