• 한국환경과학회지
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• 제25권7호
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• pp.989-998
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• 2016

In this study, we analyzed the content and compensation factors of 337 cases of national environmental disputes from five recent years (2000~2014). Causes of damage were noise-vibration in 234 cases (69%), sunlight in 48 cases (14%), air pollution in 19 cases (6%), water pollution in 15 cases (4%), odor in 13 cases (4%), and others factors in 8 cases (3%). Sources of damage were construction in 224 cases (66%), structures in 36 cases (11%), vehicle on road in 31 cases (9%), industry in 18 cases (5%), environmental facility in 11 cases (3%), livestock facility in 6 cases (2%), and other sources in 11 cases (3%). From the results of logistic regression analysis, important factors associated with compensation were found to be damage amount, damage distance, zoning districts, source, and administrative disposition.

• 해양환경안전학회지
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• 제1권2호
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• pp.1-15
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• 1995

Almost of all impediments to enhancing ship safety and preventing vessel-source marine pollution arise from the interaction between direct and indirect factors. The direct factors come from human errors and failure in compliance with the international convention standards for the operation of cessel. The indirect factors derive from the will and attitudes of the countries taking little responsibilities with appropriate seriousness for policing their fleets. By focusing on these aspects, this paper reviews the effectiveness of existing countermasures adopted by IMO and intends to propose a new paradigm to improve the implementation capability of each nation by suggesting frameworks of maritime administration models.

• 보건교육건강증진학회지
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• 제25권5호
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• pp.1-20
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• 2008

이 연구의 목적은 한국과 호주 백세인의 사회 환경요인을 규명하고자 시도되었다. 조사대상은 양국가의 통계청에서 산출한 백세인 전체를 표본으로 하였다. 백세인의 지역에 대한 차이는 장수요인과 연관된 사회 환경요인을 선정하여 조사 분석하였다. 자료처리는 피어슨 상관관계(Pearson's Coefficient of Correlation)와 회귀방정식 (Regression Equations)을 활용하였다. 분석결과, 양국가의 백세인 거주 지역은 소득수준이 낮고 담배 소비량도 적으며, 대기오염도 낮고 양파와 보리를 생산하곤 콩과 마늘을 재배하며, 자동차가 적고 이혼율이 낮으며, 실업비율이 낮고 수질오염이 적은 지역이었다. 이와 같은 연구결과를 볼 때, 양국가의 백세인은 건강식의 농산물생산과 사회 환경요인이 장수요인으로 작용한 것으로 판단된다. 그러므로 백세인의 건강증진을 위한 사회 환경요인은 건강식품, 쾌적한 환경, 금연 및 건강행태 둥으로 이들에 대한 노인보건교육과 계속적인 노인들의 건강증진 연구가 진행되어야 할 것으로 사료된다.

• 치위생과학회지
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• 제24권1호
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• pp.22-28
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• 2024

Background: Particulate matter (PM) has been extensively observed due to its negative association with human health. Previous research revealed the possible negative effect of air pollutant exposure on oral health. However, the predictive model between air pollutant exposure and the prevalence of periodontitis has not been observed yet. Therefore, this study aims to propose a predictive model for the number of patients with periodontitis exposed to PM and atmospheric factors in South Korea using deep learning. Methods: This study is a retrospective cohort study utilizing secondary data from the Korean Statistical Information Service and the Health Insurance Review and Assessment database for air pollution and the number of patients with periodontitis, respectively. Data from 2015 to 2022 were collected and consolidated every month, organized by region. Following data matching and management, the deep neural networks (DNN) model was applied, and the mean absolute percentage error (MAPE) value was calculated to ensure the accuracy of the model. Results: As we evaluated the DNN model with MAPE, the multivariate model of air pollution including exposure to PM_2.5, PM₁₀, and other atmospheric factors predict approximately 85% of the number of patients with periodontitis. The MAPE value ranged from 12.85 to 17.10 (mean±standard deviation=14.12±1.30), indicating a commendable level of accuracy. Conclusion: In this study, the predictive model for the number of patients with periodontitis is developed based on air pollution, including exposure to PM_2.5, PM₁₀, and other atmospheric factors. Additionally, various relevant factors are incorporated into the developed predictive model to elucidate specific causal relationships. It is anticipated that future research will lead to the development of a more accurate model for predicting the number of patients with periodontitis.

• Ecology and Resilient Infrastructure
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• 제7권4호
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• pp.256-261
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• 2020

국내의 도로비점오염저감시설은 오염원을 저감시키는 성능에 근거해서 침투형, 식생형, 저류형, 인공습지 등과 같이 분류된다. 이 분류기법은 기법을 이해하기는 용이하나 도로교통과 관련된 요소가 고려되지 않아 실제 도로기술자가 계획이나 설계에 적용할 때 애로가 많았다. 본 연구에서는 도로비점오염저감시설을 설계에 적용할 때 시설의 종류를 결정할 수 있는 분류방법론을 개발하였다. 도로의 특성 (위치, 차선, 교통량), 시설여유, 도로의 구조물 등을 주요 결정인자로 도로비점저감 대책의 의사결정과정을 만들어 유형별로 시설을 선정할 수 있는 기법을 개발하였다. 각 유형별로 사이트의 조건과 적용이 가능한 시설 및 대책을 정리하여 현장에 적용할 수 있도록 하였다. 개발한 기법은 경기도 도로구역에 적용하여 보완하였고, 비점저감 계획에 사용할 수 있도록 하였다.

• 상하수도학회지
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• 제19권5호
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• pp.547-556
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• 2005

The objective of this study is to obtain adequate intercepting flow during wet weather conditions in combined sewer system. Two study sites are selected under considering different population density, one is developed area with heavy urbanization. Another is recently developing area. In the analysis of field investigation, SS was most significant in initial flushing effects compared with other factors and showed the result with the order of COD, TP, TN. As compared with event mean concentration(EMC) of runoff, BOD, TN and TP showed high concentrations in wide area with relatively large population density. It is by the reason that much pollution load was discharged to receiving water from urbanized area during wet period. According to results of storm-water modeling, 53% of total COD and 52% of total SS pollution load were discharged to receiving water by overflow than intercepting capacity in middle population density site. Also, in the urbanized area, pollution load was discharged to receiving water by 49% of total COD and 77% of total SS. These results can be applied to setup for pollution load flow(budget) generation, collection, treatment and discharging in order to obtain adequate intercepting flow.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.1322-1323
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• 2011

This study is to analysis on electrical characteristics according to the pollution of the outdoor exposed modules. Output of module is generated locally because there are various factors of pollution on the front glass of the modules. The experiments is carried out by measuring out output of the module with MP-160 and hot spots with a IR camera. This study is to analysis on electrical characteristics according to the pollution of the outdoor exposed modules.

• 한국환경과학회지
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• 제11권5호
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• pp.445-454
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• 2002

Material exposure experiments were performed to evaluate the relationship between air pollution and material corrosion rates based on collaboration with researchers in China, Japan, and Korea. Qualitative and quantitative atmospheric corrosion was estimated from damage caused to bronze, copper, steel, marble, cedar, cypress, and lacquer plates exposed to outdoor and indoor conditions in certain East Asian cities. The effects of atmospheric and meteorological factors on the damage to the copper plates and marble pieces were estimated using a regression analysis. The results indicated that sulfur dioxide produced the most destruction of the materials, especially in South Korea and China. In Japan, the copper plates were damaged as a result of natural conditions and sea salt. Copper was also found to be damaged by the surface deposition of sulfur and chlorine. Meanwhile, marble was substantially degraded by gaseous sulfur dioxide, yet sulfate ions in rain had no effect. Accordingly, the analysis of air pollution from the perspective of material damage was determined to be very useful in evaluating and substantiating the intensity of air pollution in East Asia.

• 한국물환경학회지
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• 제26권1호
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• pp.28-34
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• 2010

This study was conducted to assess the validity of fecal coliforms to fecal streptococci ratio (FC/FS) for distinguishing the human from animal origin of fecal pollution in surface water. FC/FS ratio determined in effluent from municipal wastewater and human feces treatment plant (WWTP) and in downstream close to discharge of human feces was above 4 which indicates human origin. However FC/FS ratios determined seasonally in other water zones of the Nakdong River, even in the same sampling site, varied differently (above 4 or less than 0.7) due to different survival time of FC and FS and other environmental factors such as rainfall in watershed. Compared to other season, FC/FS ratios in winter were much lower regardless of the origin. It is concluded that the FC/FS ratio determined in surface water is not always valid for determining the origin of fecal pollution.

• 한국물환경학회지
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• 제26권2호
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• pp.191-199
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• 2010

Introduction of Technology-Based Effluent Limitations (TBELs) concepts into Korea requires extensive and through analyses on the expected pollutants reduction effects and the cost factor for the industry side. In addition, the TEBLs should be optimized for the regulatory environments of Korea and be applied in a progressive manner to minimize the undesirable effects. It is also necessary to assess the contribution of each industrial categories's to the pollution of natural water bodies to find the priority of TEBLs application. For these purposes, the pollution loads of various industrial categories were analyzed using risk assessment indicator based on Toxic Weighting Factors (TWFs). First, the TWFs were calculated for the pollutants regulated using the method adopted by USEPA. And the effluent characteristics of the eighty two categories of industry in Korea were investigated. Although the analytical data on the wastewater from different industrial categories are relatively limited, the results from two previous studies were used. The first study, conducted by the National Institute of Environmental Research in 2001~2004, investigated the wastewater characteristics from 255 industrial sources covering the major 20 industrial categories. The second study includes more recent analytical data for the wastewater from 500 industrial sources, covering all the 82 industrial categories. In the result of the pollution loads analyses, the category of 'Synthetic and Chemical manufacture' was found to show the highest raw pollution load. On the other hand the category of 'Ion & Steel manufacture' was found to show the highest effluent pollution loads, which can be considered as the real impacts on natural water streams. The top five categories occupied 62.2% of the total effluent pollution loads. Through the analyses, the relative importances of each industrial categories and the priorities of TEBL-based pollution reduction were determined.