• Proceedings of the Korea Water Resources Association Conference
• /
• 2023.05a
• /
• pp.105-105
• /
• 2023

최근 기후변화로 인해 매년 집중호우 및 태풍으로 인한 침수피해가 증가하고 있다. 현재 국내에서는 이러한 피해를 줄이기 위해 구조적 대책뿐만 아니라 치수사업의 의사결정을 지원할 수 있는 비구조적 대책들이 대두되고 있다. 비구조적 대책으로는 재해예방사업 등에서 투자우선순위를 결정할 수 있는 다차원법, 홍수취약성지수 등과 같은 정량적, 정성적 홍수위험도 평가가 대표적이다. 하지만 기존 시군구별 홍수위험도 평가는 빈도별 홍수위험지도의 침수면적을 반영하지 않았었다. 따라서 본 연구에서는 서울특별시를 대상으로 빈도별(50, 80, 100 및 200년) 설계홍수량에 따른 홍수위험지도를 작성하고 IBA(Indicator Based Assessment) 방법을 활용한 홍수위험도 평가를 실시하였다. 홍수위험지수는 4가지 항목(Hazard, Exposure, Vulnerability 및 Capacity)과 8개의 세부지표로 구성하였다. 분석결과, 송파구와 성동구는 100년 빈도, 용산구와 강남구는 80년 빈도와 100년 빈도에서 홍수위험지수의 순위 변동이 관측되었다. 순위 변동이 발생한 주요 원인으로는 홍수위험도 평가에 반영된 Exposure 및 Vulnerability 항목에 포함된 세부지표별 지수가 시군구 내 빈도별 침수면적이 변화함에 따라 증가 혹은 감소했기 때문이었다. 본 연구를 활용하면 빈도별 침수면적 변화에 따른 시군구별 홍수위험도를 파악할 수 있으며, 그에 따른 예방책 또한 마련할 수 있을 것이다. 그리고 공간분석을 통해 도출된 통계지도를 활용하여 홍수위험에 직접적으로 노출된 건물 및 인구 밀집지역을 파악하고, 해당 지역을 대상으로 치수사업을 전개할 수 있을 것으로 판단된다.

• Journal of the Korean Society of Radiology
• /
• v.17 no.4
• /
• pp.565-572
• /
• 2023

This study was conducted to analyze the status radiological imaging examinations assessment in Korea medical institutions conducted in the public sector and suggest a direction for improvement. Among the assessment of medical institutions, the main assessment related to radiographic imaging examinations are the certification evaluation of medical institutions and the adequacy assessment of radiographic imaging examinations. The certification evaluation of medical institutions evaluates the image inspection operation process, provision of accurate results, and compliance with safety management procedures. In the assessment of adequacy of radiographic imaging examinations, structural indicators related to manpower and equipment, patient evaluation implementation rate, and exposure reduction programs were included. However, for safer and higher-quality radiological imaging examinations, it is necessary to increase the participation rate of medical institutions in certification evaluations. In addition, it is necessary to improve the manpower indicator, and incentive payments can be considered to induce quality improvement of medical institutions in the future. Integrated management of radiation exposure at the national level should also be carried out simultaneously.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2021.06a
• /
• pp.71-71
• /
• 2021

현재 국내에서 사용되고 있는 지자체 단위 위험도 평가 기법들은 자연재난과 사회재난으로부터 유발되는 여러 위험성들을 함께 고려하여 평가에 반영하고 있다. 또한, 지자체 내에서 홍수위험에 노출될 수 있는 대상만을 선별하여 분석한 것이 아닌 지자체별 단순 통계값으로 평가가 이루어지기 때문에 홍수위험에 대한 정확한 평가가 어렵다는 한계를 가지고 있다. 따라서 본 연구에서는 Indicator Based Approach(IBA)에서 제시하는 평가 항목인 Hazard, Exposure, Vulnerability, Capacity 중 Exposure에 해당하는 건축물수를 대상으로 홍수위험지도와 중첩되는 건축물들을 선별하여 홍수위험도 평가를 수행하였다. 지자체별 건축물수 산정은 2018년 11월 기준 경기도 31개 시군별 도로명주소 전자지도(건물)와 500m × 500m 건축물수 격자자료를 사용하였다. 건축물수 격자자료는 도로명주소 전자지도의 건물 폴리곤 자료 대비 분석이 간편하다는 장점을 가지고 있다. 비교 분석을 통해 공간분석자료의 유형에 따라 발생하는 통계값의 차이는 격자자료에 보정계수를 적용하여 보완하였다. 보정된 경기도 지자체별 건축물수 격자자료로 세부지표 지수를 산정한 결과 단순히 자지체별 건축물수를 사용했을 때에는 화성시, 용인시, 평택시 순으로 지수가 크게 산정되었다, 하지만 홍수위험지도와 중첩된 건축물수를 사용했을 때에는 고양시, 광명시, 김포시 순으로 지수가 크게 산정되었다. 본 연구를 통해서 건축물수 격자자료와 홍수위험지도를 사용하여 위험도 평가를 수행했을 때 기존 방법론 대비 합리적인 평가결과를 얻을 수 있었다.

• Journal of the Korean Institute of Traditional Landscape Architecture
• /
• v.36 no.2
• /
• pp.30-37
• /
• 2018

The uniformed regulations for control of the height of buildings owned by individuals to protect landscape of cultural properties are causing serious social conflicts by limiting the development of landowners. It is urgent need of introducing indicators that can resolve such conflicts and evaluate the regulations of buildings, which can satisfy urban development as well as landscape management of cultural properties. Therefore, the purpose of this study is to simulate landscape changes according to the Cultural Heritage Protection Act and National Land Planning and Utilization Act by using Unity3D in the Pungnammun Gate(Treasure No. 308) of Jeonju and its surroundings, where architectural cultural property forms the symbolic landscape of the city. Then some items such as view points, target points were introduced and the quantitative evaluation of landscapes was attempted by applying the indicator of 3D Visual Exposure. As a result, the viewing opportunity and viewing area of Pungnammun Gate were not significantly influenced by changes in landscape according to the two laws. However, the change of the height of buildings by the National Land Planning and Utilization Act, which has the greatest development capacity, confirmed the possibility of weakening the identification of the Pungnammun Gate by increasing 3D Visual Exposure of the background buildings more than two times. Finally, it was confirmed that the skyline of Pungnammun Gate was clearly infringed upon development under the National Land Planning and Utilization Act, but the skyline was maintained similar to the current situation in the regulation by the Cultural Heritage Protection Act. Thus, this study is meaningful in that the application of 3D Visual Exposure showed the possibility of utilization as an indicator for quantitatively evaluating the protection of view on cultural property and skyline according to the changes of building heights.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
• /
• v.13 no.1
• /
• pp.73-86
• /
• 2015

The use of complimentary indicators, other than radiation dose and risk, to assess the safety of radioactive waste disposal has been discussed in a number of publications for providing the reasonable assurance of disposal safety and convincing the public audience. In this study, the radionuclide flux was selected as performance indicator to appraise the performance of engineered barriers and natural barrier in the Wolsong low- and intermediate-level waste disposal facility. Radionuclide flux showing the retention capability by each compartment of the disposal system is independent of assumptions in biosphere model and exposure pathways. The scenario considered as the normal scenario of disposal facility has been divided into intact or degraded silo concrete conditions. In the intact silo concrete, the radionuclide flux has been assessed with respect to the radionuclide retardation performance of each engineered barrier. In the degraded silo concrete, the radionuclide flux has been explored based on the performance degradation of engineered barriers and the relative significance of natural barrier quantitatively. The results can be used to optimally design the near-surface disposal facility being planned as the second project phase. In the future, additional complimentary indicators will be employed for strengthening the safety case for improving the public acceptance of low- and intermediate-level waste disposal facility.

• Asian Journal of Atmospheric Environment
• /
• v.10 no.1
• /
• pp.1-12
• /
• 2016

Numerous researchers have proposed that surface area is a more appropriate indicator than mass for evaluating pulmonary inflammatory responses caused by exposure to fine and ultrafine particles. In this study, measurements of surface area concentrations of aerosols were conducted in Yokohama, Japan, using the diffusion charging method. $PM_{2.5}$ mass concentration and black carbon concentration in $PM_{2.5}$ were also measured. The 24-hour continuous measurement campaigns were conducted 39 times from March to November, 2014. The surface area concentration was more closely correlated with the black carbon concentration than with the $PM_{2.5}$ mass concentration. It is considered that the abundance of black carbon particles significantly affects the surface area concentration of $PM_{2.5}$. The strength of the correlation between the surface area and black carbon concentrations varied considerably among the measurement campaigns. A relatively weaker afternoon correlation was observed compared with the other time zones (morning, evening, and night). We consider that these phenomena are due to the transportation/formation of the particles other than black carbon that affects surface area concentration and/or the variation of the surface condition of the black carbon particles.

• Journal of Nutrition and Health
• /
• v.29 no.9
• /
• pp.981-990
• /
• 1996

To define the risk facots of subclinical vitamin D deficiency in postmenopausal women, circulating serum 25-hydroxyvitamin D levels, known to be the indicator of vitamin D status, were measured and risk faxtors affecting it were investigated in 27 women with low 25-hydoxyvitamin d level(ie, the study group : serum 25-hydroxyvitamin D<10ng/ml) by comparing to 55 age-matched control(the control group) were analyzed. The serum level of 25-hydorxyvitamin D was analyzed by HPLC(High Pressure Liquid Chor-matography) and analyzed biochemical parameter. The following information was obtained by interviews : sociodemographic charateristics, the intake of food containing vitamin D, proxy measure of sunlight exposure(time spent outdoors), and reprocuctive histpry of the subjects. The study group had significantly lower levels of serum calcium, increased levels of iPTH and alkaline phosphatase, Among the dietary determents, energy, protein, fat, calcium, phophorus, and vitamin D intakes were lower in the study group than the normal group. The time spent outdoors in a day was not significantly different between the two groups. However, during the day, a specific time of time spent out doors between 12:00 and 14:00 was significantly lower in the study group. Logistic analysis revealed that vitamin D and calcium intake were more important affecting factors than the time spent outdoors in post menopausal women.

• Korean Journal of Ecology and Environment
• /
• v.43 no.1
• /
• pp.24-34
• /
• 2010

This study was carried out to analyze some influences on ecological health conditions, threaten by various stressors such as physical, chemical and biological parameters. We collected samples in 2008 from three zones of upstream, midstream and downstream, Gap Stream. We applied multi-metric fish assessment index (MFAI), based on biotic integrity model to the three zones along with habitat evaluations based on Qualitative Habitat Evaluation Index (QHEI). We also examined fish fauna and compositions, and analyzed relations with MFAI values, QHEI values, and various guild types. Chemical parameters such as oragnic matter (BOD, COD), nutrients (TP, $NH_3$-N), coli-form number (as MPN), and suspended solids (SS) were analyzed to identify the relationship among multiple stressor effects. Using the sentinel species of Zacco platypus, the population structures and condition factors were analyzed along with DNA damages related with genotoxicant effects by comet assay. This study using all these parameters showed that stream condition was degraded along the longitudinal gradient from upstream to downstream, and the downstream, especially, was impacted by nutrient enrichment and toxicant exposure from the point source, wastewater treatment plant. Overall results indicated that our approaches applying various parameters may be used as a cause-effect technique in the stream health assessments and also used as a pre-warning tool for diagnosis of ecological degradation.

• Journal of The Korean Astronomical Society
• /
• v.55 no.3
• /
• pp.75-86
• /
• 2022

The lunar surface progressively darkens and reddens as a result of sputtering from solar wind particles and bombardment of micrometeoroids. The extent of exposure to these space weathering agents is frequently calculated as the location in a diagram of reflectance at 750 nm vs. 950 nm/750 nm color (R-C). Sim & Kim (2018) examined the R-C trends of pixels within ~3,500 craters, and revealed that the length (L) and skewness (s) of R-C trends can be employed as a secondary age or maturity indicator. We broaden this research to general lunar surface areas (3,400 tiles of 0.25° × 0.25° size) in 218 mare basalt units, whose ages have been derived from the size-frequency distribution analysis by Hiesinger et al. (2011). We discover that L and s rise with age until ~3.2 Gyr and reduce rather rapidly afterward, while the optical maturity, OMAT, reduces monotonically with time. We show that in some situations, when not only OMAT but also L and s are incorporated in the estimation utilizing 750 & 950 nm photometry, the age estimation becomes considerably more reliable. We also observed that OMAT and the lunar cratering chronology function (cumulative number of craters larger than a certain diameter as a function of time) have a relatively linear relationship.

• Journal of Veterinary Science
• /
• v.23 no.6
• /
• pp.83.1-83.7
• /
• 2022

Severe fever with thrombocytopenia syndrome (SFTS) is a zoonotic disease, and its clinical information and prevalence are important. This study was conducted on 22 feline patients from the Republic of Korea (ROK), suspected to suffer from a tick-borne disease. Four cats were positive for SFTS, and genotypes B-1, B-3, D, and F were identified. Clinical symptoms, such as anorexia, jaundice, thrombocytopenia, leukopenia, and hyperbilirubinemia, were detected. This is the first report of SFTS virus genotypes B-1, D, and F from cats in the ROK. Moreover, our results suggest that jaundice may be an indicator of SFTS in cats.