• Korean Journal of Agricultural Science
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• v.21 no.2
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• pp.92-102
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• 1994

This study examined Public Evaluation for functions of urban open space environment using a marketing strategy called Importance-Performance analysis. 12 main function attributes for urban open space environment were selected 150 respondents were sampled in Taejon city by personal interview. Ratings used mean values from a seven-point scale. Results were then graphically displayed on an easily interpreted two-dimensional 'Action Grid'. Generally Importance Ratings were high, but Performance Ratings were low relatively for various open space environment functions. In air pollution control function the difference was the most large. The results of rating scale analysis indicated repondents' sexual and residence period difference.

• Journal of Korean Society on Water Environment
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• v.27 no.6
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• pp.841-847
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• 2011

In this study, a method to determine the design capacities of nonpoint source (NPS) pollutant treatment facilities in urban areas was suggested. A facility capacity to treat 80 percent of total SS discharge was estimated by 2-year rainfall - runoff - build-up and wash-off simulation at Goonja drainage district in Seoul. For wash-off simulation, four wash-off models (EMC, RC, EXP, and Joo model) were used. As the results, 80 percent of total SS discharge could be treated with only 7.7~31.4% facility capacity of peak flow. The suggested method and results will provide a guideline to determine design capacities of NPS pollutant treatment facility in urban areas.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.169-170
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• 2000

UAM(Urban Airshed Model)은 광화학 모델로써 미국에서 오존 모델링에 대한 좋은 신뢰성을 갖고있어 여러 도시에 많이 적용된 모델이다. 우리나라에도 이미 수도권 지역을 대상으로 김용국(1996), 최정희(1999)논문에 적용된 바 있다. 그러나 우리나라 적용사례에서 보면 측정농도와 모델결과 값의 차이가 큰 경우가 나타난다. 따라서 UAM 실행의 정확도를 높이기 위해 오존농도의 범위를 살펴보고, 대상 기간을 선정하여 UAM을 실행하고, 그 결과를 비교하였는바 그 원인을 밝히기 위하여 경계농도에 대한 고찰을 실시하였다. (중략)

• Journal of Korean Society on Water Environment
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• v.20 no.5
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• pp.500-505
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• 2004

While more attention has been paid in recent years to urban point source pollution control, no considerable measures have been taken to control urban non-point source pollution. Contaminants from non-point sources deposited on urban impermeable surfaces such as road and highway are easily released to the public waters by rainfall, leading to the deterioration in water quality in urban area. The present study investigated a system using filter media to reduce the level of contamination in urban road runoff. Three different media, designated as J-P (polypropylene, blowing type), B-P (polypropylene, fiber type), and P-F (Polyvinyl alcohol, cube and sheet type) were evaluated on the basis of pollutant removal efficiency as well as hydraulic property. Experiments were peformed using a 1/4-scale treatment unit at various pollutant roading and rainfall intensity with real rainwater runoff collected from road surfaces. The results at different rainfall intensities shows that the medium J-P is superior to the other media for water permeability. J-P was not blocked at 10 mm/hr rainfall and its permeability was stable. On the other hand, B-P and P-F resulted in substantial overflow ratio even at I mm/hr rainfall intensity. Comparing treatment efficiencies for suspended solids, all media showed similar removal ranged from 91 % to 95%. However, J-P seems to be better than the other media considering its higher water permeability. J-P and P-F, both hydrophobic, yielded over 76% of heavy metal removal. But, the hydrophilic media B-P showed much smaller removal ranging from 26% to 47%. This indicates that J-P and P-F are beneficial to remove heavy metal due to their hydrophobic property. The treatment efficiencies over PAHs (poly aromatic hydrocarbons) showed the similar removal efficiency ranging from 66% to 97% for all three media.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2010.04a
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• pp.669-670
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• 2010

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2011.04a
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• pp.83-86
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• 2011

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.10a
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• pp.161-163
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• 2005

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2001.04a
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• pp.111-115
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• 2001

• Proceedings of the Korean Geotechical Society Conference
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• 1994.09a
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• pp.158-168
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• 1994

This report describes aspects of recent braced excavation constructed in built up areas where adjacent buildings or underground utilities are likely to be subjected to settlement and damages. Trends and choice of earth retaining structures for deep excavation are present, and some desigen and construction techniques are introduced in order to minimise possible adverse effects to the urban environment. Some problems in design and construction of braced excavation in urban area are closely examined and remedial measrures are proposed.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2004.04a
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• pp.169-173
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• 2004