• 한국지리정보학회지
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• 제27권2호
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• pp.19-33
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• 2024

방범용 CCTV는 지속적으로 증설되고 있으나 설치 위치 결정에 대한 가이드라인의 부재로 범죄 발생 다발지역과 무관한 위치에 CCTV가 설치되는 경우가 많다. 이에 본 연구에서는 도시공간빅데이터를 활용하여 CCTV 우선설치지수를 개발하고, 사례지역에 시범 적용하여 적용 가능성을 타진하였다. CCTV 우선설치지수는 범죄취약지수와 감시취약지수로 구성하였으며, 각각 머신러닝 알고리즘을 통해 예측한 그리드별 범죄발생건수, 가시권 분석을 통해 산출한 그리드별 감시불가면적의 비율을 활용하여 산출하였다. 지수를 시범지역에 적용한 결과 CCTV 가시권 분석에 Viewshed 기능을 활용함으로써 기존 버퍼 기능 활용 시 감시면적이 과대 추정되었던 문제를 해결할 수 있었다. 또한 해당 지수를 적용하여 CCTV 설치 위치를 결정할 경우, 감시면적을 효율적으로 개선 가능하다. 본 연구의 CCTV 위치 결정 프로세스에 따라 사례지역에 신규 CCTV를 추가 설치할 경우, 도로면적 대비 감시면적이 43.25%에서 83.73%로 증가하였다. 따라서, CCTV 우선설치지수는 스마트안전도시 조성을 위한 효과적인 의사결정 도구로 활용될 수 있을 것이다.

• 한국환경복원기술학회지
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• 제10권6호
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• pp.110-119
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• 2007

This study's objects are to predict distribution and to assess vulnerability of sub-alpine vegetations in the Korean peninsula for climate change using various climate models. This study validates relationship between sub-alpine vegetations and environmental factors using Pearson correlation analysis. Then, the future distribution of sub-alpine vegetations are predicted by a logistic regression. The major findings in this study are; First, spring mean temperature (March-May), total precipitation, elevation and warmth index are highly influencing factors to the distribution of sub-alpine vegetations. Second, the sub-alpine vegetations will be disappeared in South Korea and concentrated around Baekdu Mountain in North Korea. North Korea is predicted to have serious impact of climate change because temperature will be increased higher than in South Korea. The study findings concluded that the assessment of the future vulnerability of sub-alpine vegetations to climate change are significant.

• 융합보안논문지
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• 제2권2호
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• pp.67-75
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• 2002

조직의 정보시스템이 직면한 위험을 분석할 수 있는 위험분석모델을 정보시스템구축 방법론에 적용하여 정보시스템 구축을 진행하면서 위험분석 결과를 반영할 수 있도록 하였다. 위험분석은 조직의 정보자산에 대한 위협과 취약성, 그리고 대응책간의 함수관계를 활용하는 방법으로 조직이 보유한 정보자산에 내재한 취약성의 영향범위와 이에 대응하고 있는 위협의 빈도와 강도 그리고 위협에 대한 대응책의 적용정도를 분석해 종합적인 정보위험수준을 평가하는 방법이다.

• 한국산학기술학회논문지
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• 제15권8호
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• pp.5349-5354
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• 2014

기후변화는 시스템의 취약성을 증가시키는 매우 중대한 요인 중 하나이다. 그러므로 다양한 방법으로 취약성을 평가하여, 그 영향을 최소화시키는 방향으로 적응정책을 수립하도록 하는 것은 매우 중요한 일이다. 그러나 취약성 계산을 위해 고려하는 다양한 대리변수들이 취약성을 적절히 표현하고 있는지에 대한 고찰은 잘 이루어지지 않고 있다. 그러므로 본 연구는 기후변화 취약성을 계산하기 위해 고려되는 다양한 대리변수들 가운데 재난 및 안전관리 교육에 관련된 변수들이 비구조적 적응능력을 대표하기 위해 고려되어야 한다는 것을 전문가들의 설문조사를 통해 보였다. 조사결과, 교육대상과 지역의 특성에 따라 재난안전교육이 기후변화 취약성에 기여하는 정도가 달라질 수 있음을 알 수 있었다. 이 결과는 향후 기후변화 적응정책을 수립하는데 지역별 기초자료로 활용될 수 있을 것이다.

• 한국지하수토양환경학회지:지하수토양환경
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• 제27권spc호
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• pp.92-98
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• 2022

Although various methods have been proposed to assess groundwater vulnerability, most of the models merely consider the mobility of contaminants (i.e., intrinsic vulnerability), and the attenuation capacity of vadose zone is often neglected. This study proposed an evaluation model for the attenuation capacity of vadose zone to supplement the limitations of the existing index method models for assessing groundwater vulnerability. The evaluation equation for quantifying the attenuation capacity was developed from the combined linear regression and weighted scaling methods based on the lab-scale experiments using various vadose zone soils having different physical and biogeochemical properties. The proposed semi-quantifying model is expected to effectively assess the attenuation capacity of vadose zone by identifying the main influencing factors as input parameters together with proper weights derived from the coefficients of the regression results. The subsequent scoring and grading system has great versatility while securing the objectivity by effectively incorporating the experimental results.

• 국제초고층학회논문집
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• 제9권2호
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• pp.175-185
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• 2020

Currently, few studies have been conducted to comprehend the seismic reliability of post-tensioned (PT) CLT shear wall structures, due to the complexity of this kind of structural system as well as due to lack of a reliable structural model. In this paper, a set of 4-, 8-, 12-, and 16-storey benchmark PT CLT shear wall structures (PT-CLTstrs) were designed using the direct displacement-based design method, and their calibrated structural models were developed. The seismic reliability of each PT-CLTstr was assessed based on the fragility analysis and based on the response surface method (RSM), respectively. The fragility-based reliability index and the RSM-based reliability index were then compared, for each PT-CLTstr and for each seismic hazard level. Results show that the RSM-based reliabilities are slightly less than the fragility-based reliabilities. Overall, both the RSM and the fragility-based reliability method can be used as efficient approaches for assessing the seismic reliabilities of the PT-CLTstrs. For these studied mid- and high-rise benchmark PT-CLTstrs, following their fragility-based reliabilities, the 8-storey PT-CLTstr is subjected to the least seismic vulnerability; while, following their RSM-based reliabilities, the 4-storey PT-CLTstr is subjected to the least seismic vulnerability

• 대한한방소아과학회지
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• 제27권2호
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• pp.1-10
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• 2013

Objectives The aim of this study was to explore the effect of parental attitude on the behavioral problems in children who visited the traditional Korean pediatrics clinic. Methods The subjects were consist of 190 outpatients ($56.6{\pm}12.9$ months) and their mother. The Behavior problems of children were measured with Korean version of Child Behavior Checklist for Ages 1.5-5 (K-CBCL1.5-5) while parental perception of child vulnerability, parent overprotection, parenting stress were measured by Child Vulnerability Scale (CVS), Parent Protection Scale (PPS), Korean-Parenting Stress Index-Short Form scale (K-PSI-SF), respectively. Correlation and multiple regression were conducted for the analysis. Results Significant correlations between child total problems score and child vulnerability (r=.272, p<.001), parent overprotection (r=.243, p=.001), and parenting stress (r=.597, p<.001) were reported. Multiple regression analysis revealed that the parenting stress (${\beta}$=.548, p<.001) was a major predictor for the child behavior problems rather than child vulnerability and parent overprotection. Conclusions It was shown that the parenting stress has a significant influence on the emotional and behavioral development of children. These results can be useful for improving clinical diagnosis and treatment in traditional Korean pediatrics.

• Structural Monitoring and Maintenance
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• 제2권2호
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• pp.115-132
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• 2015

This paper presents a new method for seismic vulnerability assessment of buildings with reference to their operational limit state. The importance of this kind of evaluation arises from the civil protection necessity that some buildings, considered strategic for seismic emergency management, should retain their functionality also after a destructive earthquake. The method is based on the identification of experimental modal parameters from ambient vibrations measurements. The knowledge of the experimental modes allows to perform a linear spectral analysis computing the maximum structural drifts of the building caused by an assigned earthquake. Operational condition is then evaluated by comparing the maximum building drifts with the reference value assigned by the Italian Technical Code for the operational limit state. The uncertainty about the actual building seismic frequencies, typically significantly lower than the ambient ones, is explicitly taken into account through a probabilistic approach that allows to define for the building the Operational Index together with the Operational Probability Curve. The method is validated with experimental seismic data from a permanently monitored public building: by comparing the probabilistic prediction and the building experimental drifts, resulting from three weak earthquakes, the reliability of the method is confirmed. Finally an application of the method to a strategic building in Italy is presented: all the procedure, from ambient vibrations measurement, to seismic input definition, up to the computation of the Operational Probability Curve is illustrated.

• 한국환경복원기술학회지
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• 제19권5호
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• pp.29-45
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• 2016

This study identified vulnerable regions in the national parks of the Republic of Korea (ROK). The potential vulnerable regions were defined as areas showing a decline in forest productivity, low resilience, and high sensitivity to climate variations. Those regions were analyzed with a regression model and trend analysis using the Enhanced Vegetation Index (EVI) data obtained from long-term observed Moderate Resolution Imaging Spectroradiometer (MODIS) and gridded meteorological data. Results showed the area with the highest vulnerability was Naejangsan National Park in the southern part of ROK where 32.5% ($26.0km^2$) of the total area was vulnerable. This result will be useful information for future conservation planning of forest ecosystem in ROK under environmental changes, especially climate change.

• 한국환경과학회지
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• 제14권3호
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• pp.289-296
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• 2005

In this study aims is water supply criteria relations for evaluating the possible performance of water resources systems. These measures describe how likely a systems is to fail(reliability), how quickly it recovers from failure(resiliency), and how severe the consequences of failure may be(vulnerability). The performance of a criteria evaluating with a variety of operating policies illustrates their use. As a result study frequency reliability and quantitative reliability is linear relations and quantitative reliability is high reliability for equality water supply policy. As reliability and vulnerability are in inverse proportion to each other. Therefore these criteria relation analysis can be for Imha dam to variety water supply policy.