• Proceedings of the Korea Air Pollution Research Association Conference
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• 2009.10a
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• pp.506-507
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• 2009

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.132-133
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• 2000

2000년 현재 울산지역에는 대기질 상태를 측정하고 있는 11개의 일반 대기환경 측정망이 있다. 각 측정소별 특징을 살펴보면 개운동, 여천동, 화산리, 원산리 측정소는 공업지역에 위치해 있으며, 상업지역에는 성남동 및 무거동 측정소, 그리고 야음동, 상남리, 신정동, 덕신리 및 대송동 측정소는 주거지역에 위치해 있다. 울산지역에는 1978년도를 시작으로 80년대, 그리고 90년대 중반까지 주로 공업지역을 위주로 대기환경측정망을 배치시켜 왔다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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• pp.45-46
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• 2003

배경대기(Background Atmosphere)란 배출원의 강도에 따라 다를 수 있으나 일반적으로 도시 또는 대규모의 발전소로부터의 영향이 적은 지역의 대기로써 인위적 오염원이 거의 없는 지역을 의미한다(WMO, 1978). 세계 기상기구(World Meteorological Organization: WMO)에서는 지구 대기가 인위 적인 오염원으로 인하여 생태계의 변화가 예상되고 인류의 생존이 위협받게 됨에 따라 이에 대한 대책으로 1969년에 배경대기오염관측망(Background Air Pollution Monitoring Network: BAPMoN)을 구축하여 장기적인 지구의 대기 환경 변화를 예측하기 위한 사업을 시작하였다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.04a
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• pp.161-162
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• 2002

현재의 환경문제는 국가적인 경계를 떠나서 지역적 및 범 지구적인 수준으로 인류의 생존을 위협하고 있다. 특히 한반도를 포함한 동북아지역은 전 세계적으로 인구가 밀집되어 있으며 경제발전속도가 빠른 지역으로서 심각한 대기오염문제를 야기 시킬 수 있는 상당한 양의 대기오염물질이 배출되고 있으며 이 지역의 풍향은 주로 서풍이기 때문에 중국의 풍하측에 위치한 한반도와 일본 등지에서는 중국에서 발생한 대기오염물질로 인한 피해가 급증하고 있으며 이에 대한 대책마련에 노력과 관심을 쏟고 있다. (중략)

• Journal of the Korean housing association
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• v.21 no.3
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• pp.87-94
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• 2010

The aim of this study was to evaluate the influence of air pollution level in industrial and residential district of Ulsan on resident's evaluation and cognition for indoor environment. The evaluation of air pollution materials (as $SO_2$, $NO_2$, $O_3$, CO, PM10) were investigated to understand the distributional characteristics in survey area, and air quality monitoring data from 2007 to 2009 were used. The data was applied in a realtime measurement of industrial and residential area respected to difference of the pollution level in Ulsan. The questionnaire of this survey for resident's cognition was to find out characteristics on perception of indoor environment and outdoor air quality recognition based on the distinct characteristics of the areas. The results of this study shows that resident's satisfaction at clean level outdoor air and indoor environment were different whether it was residential area or industrial area and outdoor air pollution level has direct influence on resident's satisfaction in indoor environment.

• Journal of The Korean Society of Agricultural Engineers
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• v.58 no.4
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• pp.67-74
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• 2016

Load Duration Curve (LDC) can be used as a method for load management of point and non-point pollution source because the LDC easily assesses the water quality corresponding to hydrological changes in a watershed. Recently, the application of LDC to total pollution load management is a growing interest in Korea. In this regard, A desktop-based LDC assessment system was developed in this study to provide convenience to users in water quality evaluation. The developed system can simply produce the LDC by using streamflow and water quality data involved in its database. Also, The system can quantitatively inform the success or failure of the achievement for a target water quality at monthly scale. Furthermore, seasonal water quality and point/non-point pollution load in a watershed can be estimated by this system. We expect that the developed system will contribute to establish local and national policies regarding water management and total pollution load management because of its advantages such as the pollution tracking investigation and the analysis of water quality and pollution loading amount in an ungauged watershed.

• Journal of Korean Society on Water Environment
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• v.32 no.6
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• pp.528-536
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• 2016

The purpose of Total Pollution Load Control at Tributary is to obtain maximum improvement effect of water quality through finding the most impaired section of water-body and establishing the proper control measure of pollutant load. This study was implemented to determine the optimal management of reach, period, condition, watershed, and pollution source and propose appropriate reduction practices using the Load duration curve (LDC) and field monitoring data. With the data of measurement, LDC analysis shows that the most impaired condition is reach V (G4~G5), E group (flow exceedance percentile 90~100%) and winter season. For this reason, winter season and low flow condition should be preferentially considered to restore water quality. The result of pollution analysis for the priority reach and period shows that agricultural nonpoint source loads from onion and garlic culture are most polluting. Therefore, it is concluded that agricultural reuse of surface effluent (storm-water runoff with non-point sources) and low impact farming that includes reducing fertilization and controlling the height of drainage outlet are efficient water quality management for this study watershed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.1
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• pp.8-19
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• 2021

The air pollution problem caused by industrialization in recent years is attracting great attention to both the country and the people. Domestic wide-area air pollution information is provided to the public through public data nationally, but regional air pollution information with different environmental variables is very insufficient. Therefore, in this study, we design and implement an air pollution analysis and prediction system based on regional environmental variables that can more accurately analyze and predict regional air pollution phenomena. In particular, the proposed system accurately analyzes and provides regional atmospheric information based on environmental data measured locally and public big data, and predicts and presents future regional atmospheric information using artificial intelligence algorithms. Furthermore, through the proposed system, it is expected that local air pollution can be prevented by accurately identifying the cause of regional air pollution.

• Environmental Engineering Research
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• v.13 no.4
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• pp.184-191
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• 2008

Long term monitoring was conducted to investigate a surface runoff of pollution from urban highway. The monitoring data was collected for 18 rainfall events and was used to correlate pollution load to various parameters, such as rainfall intensity, antecedent dry days and total discharge flow. Runoff coefficient and seasonal variation were also evaluated. The mean runoff coefficient of the highway was 0.823(range; $0.4687{\sim}0.9884$), and wash-off ratio for $COD_{Mn}$ and SS loads was 72.6% and 64.3%, respectively. For the initial rainfall event, the runoff EMC of $COD_{Mn}$ was high in summer and the EMC of SS was high in autumn season. However the seasonal variation of T-N and T-P was not significant. The discharged $COD_{Mn}$-EMC was $147.6\;mg/L{\sim}9.0\;mg/L$ on the generated $COD_{Mn}$-EMC of $98.8\;mg/L{\sim}8.9\;mg/L$. While the generated EMC of SS was in $285.7\;mg/L{\sim}20.0\;mg/L$ and its discharged EMC was in $190.4\;mg/L{\sim}8.0\;mg/L$. EMC of pollutants was not directly related to the first flush rainfall intensity and the antecedent dry days. But the correlation was relatively high between EMC and cumulative runoff flow volume. The trend of EMC was reduced with the cumulative runoff flow volume.

• Journal of The Korean Society of Agricultural Engineers
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• v.57 no.5
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• pp.129-137
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• 2015

The objective of this study was to test the non-point source pollution (NPS) control by the vegetated ridge and silt fence through field monitoring. The experiment plots were established with three sizes which are 5 m width by 22 m length with 8 %, 3 % slope and 15m width by 15 m length with 6 % slope. Flumes with the floating type stage gages were installed at the outlet of each plot to monitor the runoff. For a rainfall monitoring, tipping bucket rain gage was installed within the experiment site. Water quality samples were monitored during the heavy rainfall occurred. The amount of rainfall from 4 monitored events ranged from 27.6 mm to 130 mm. The runoff reduction rate could vary depending on slope, soil, crop growth condition, rainfall amount, rainfall intensity, antecedent moisture condition, and many other factors. The runoff from vegetated ridge and silt fence treatment plots was 24.05 % and -8.28 % lower than that from control plot, respectively. The monitoring results showed that the average pollution loads reduced by vegetated ridge compared to control were BOD 36.62~53.60 %, SS 40.41~73.71 %, COD 39.34~56.41 %, DOC 49.08~53.67 %, TN 26.74~67.23 %, and TP 52.72~91.80 %; by silt fence compared to control were SS 41.73 %, COD 1.93 %, and TN 2.38 %. The paired t-test result indicated that the vegetated ridge and silt fence were statistically significant effect in SS load reduction, with a 5 % significant level. Monitored results indicated that vegetated ridge and silt fence were both effective to reduce the pollutant from the field surface runoff.