• Journal of Korean Society on Water Environment
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• v.21 no.2
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• pp.184-189
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• 2005

Impacts of non-point source pollution on water quality are well known. In this paper, effects of land use, precipitation characteristics, discharge characteristics on non-point source pollutant loadings at urban, agricultural and forestry watersheds were discussed. Rainfall runoffs from fifteen rainfall events were sampled and analysed at two urban watersheds, one rural watershed, and one forestry watershed. EMCs (Event Mean Concentration) were calculated based on monitored flow rates and concentrations. Statistical analysis carried out with runoff loadings and affecting variables indicated that runoff loadings are weakly correlated with the rainfall intensity and the dry days before rainfall events while showed no correlations with rainfall depth nor runoff quantity. By comparing EMCs between study watersheds on log-normal cumulative probability scale, EMCs ranking were in the descending order of urban watershed>agricultural watershed>forestry watershed for SS, TCOD, TN, and TP.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.17 no.2
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• pp.1-14
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• 2014

The purpose of this study is to identify the efficiency of LID technologies for controlling non-point source pollution from urban areas. The recent technical responses to managing water resource and urban areas according to the influence of climate change is an important national policy, along with green growth. Through various reference studies reasonable ways to consider a wholistic plan on urban-eco-friendly river management, the Low Impact Development (LID) as the adequate river management method is being undertaken in foreign countries to technically apply to urban plans. However, the LID is at the initial stage in Korea, with no specific studies implemented. Thus, this study explored whether LID technologies can be efficient measures to control non-point source pollution on the cost side. Ulsan's Namgu and Bukgu have been chosen as case studies that illustrate the efficiency of the LID technologies. On investigation, if LID technologies are designed properly, the efficiency of them is expected to higher than that of sewage treatment plant.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.12 no.5
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• pp.87-97
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• 2013

This study tried to explore the quantitative travel heterogeneity between elderly and non elderly people, focusing on urban and rural areas in south Chungcheong province. For the analysis, a PLS(Partial least square) model is applied with economic and traffic environment characteristics of the urban and rural areas. The characteristics of elderly and non elderly people in the urban and rural areas are derived from the 2011 person trip survey. As a result, the study found out that the key factors affect on elderly people in the urban and rural areas are bus operation interval, number of bus operation routes, number of household member, and a monthly average income of household. In case of non elderly people, areas economic factors such as GRDP, the rate of economic activity, and employment status as well as those of elderly people. Meanwhile, female elderly people in rural area have more sensitivity compared to male elderly people and the gender heterogeneity is not revealed in non elderly people.

• Journal of Korean Society of Rural Planning
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• v.22 no.3
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• pp.131-142
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• 2016

Urban agriculture, which can be defined as agriculture performed in a city, is suggested as an alternative solution to restore deserted community and expand green land in city area through cultivation activities. In Korea, 'Urban Agriculture Promotion and Support Act' was enforced from May 2012. In addition, in the same year, Seoul Metropolitan Government declared 'the beginning of urban agriculture era,' established municipal ordinance, and increased budget to actively support urban agriculture. As a result, urban agriculture practices have been increasing every year. Yet, the way of developing urban agriculture in a uniform way of expanding green land has led to difficulties of securing proper spaces. Accordingly, 'roof top' spaces have gained attention. This study analyzes rooftop garden, one of the spaces of carrying out urban agriculture, from the publicness perspective. The study selected a case study of a public rooftop garden in Mullae-dong, Yeongdeungpo-gu, investigated present conditions and usage features of the garden, and explored the conditions to be a 'public' roof top garden. Through theoretical analysis, both physical and non-physical indicators were derived for analysis framework; physical aspects- accessibility, locality, openness, comfortness, and non-physical aspects- subjectivity, cooperativeness, and a sense of community. The results of this study are as follows. First, openness and locality scores were the highest, and comfortness scored the lowest, in ensuring the publicness of Mullae roof top garden. Second, non-physical indicators had stronger effect than physical indicators on rooftop garden users' awareness on publicness and building a garden community. In conclusion, in order to vitalize roof top garden, users should be engaged from the very first planning stage of building a garden, opening hours should not be limited, and more importance should be put on users to subjectively manage the operation of rooftop garden than merely creating a physical environment.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.757-762
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• 2011

As our society is becoming an aging society, there is an increasing number of the elderly. Recently, mobility handicapped like the elderly and the disable take part in many social activities. It is required public transportation systems for them. Already, the traffic policy for mobility handicapped including pregnant woman and child, has been established in many cities. Particularly, the convenience of mobility for the handicapped in the urban rail stations is depend on a pedestrian facilities like escalators and elevators. The pedestrian facilities have been built in urban rail stations without rules for mobility handicapped. To make the more convenient and more safe stations, the more study about mobility handicapped and non-mobility handicapped is needed. This paper preferentially discusses the pedestrian facilities with other convenience facilities in urban rail stations. This paper explains also their preference, relative satisfaction and importance for the convenience facilities including the a pedestrian facilities in urban rail stations and makes clear the difference between both groups.

• KIEAE Journal
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• v.14 no.3
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• pp.55-63
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• 2014

This study selected and analyzed filter media that can be applied in non-point pollution reduction devices aimed at processing the source of pollution on site for road runoff that increases rapidly in rainfall-runoff in order to improve the water quality of urban areas. First, the factors that affect the quality of runoff caused by sources of non-point pollution include physical and social factors such as the usage of land around the area of water collection, type of pavement and movement of cars and people, as well as rainfall characteristics such as frequency, intensity, amount and duration of rainfall. Second, the purification tests of the filter media were processed for pH, BOD, COD and T-P, and the filter media showed to have initial purification effect at that items. However, the filter media showed to be very effective for the processing of SS, T-N, Zn and Cd from the beginning to the end. Third, for filter media, zeolite and vermiculite showed to be effective for processing SS, T-N, Zn and CD constantly, and composite filter media including zeolite showed to have strong processing effects. The authors conclude that this study can be applied to technical areas and policies aimed at reducing non-point pollution in urban areas and can also contribute to allowing eco-friendly management of rainfall as well as improvement of water quality.

• Korean Institute of Interior Design Journal
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• v.21 no.5
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• pp.153-161
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• 2012

The purposes of this study were to reevaluate urban traditional houses and to propose direction for the conservation and utilization of urban traditional houses in a way of maintaining historical landscape rather than the value of urban traditional houses as components in expanded urban structure. For these purposes, we identified the characteristics of conservation and utilization of urban traditional houses by representative cases and analyzing them exhaustively, and suggested problems in the cinservation and utilization of traditional houses and solution for them. The current conservation system for Urban Traditional House in the Bukchon area is applied to non-residential Urban Traditional House differently according to the owner's consciousness of conservation because there is no support system for non-residential Urban Traditional House. Accordingly, there should be standardized criteria to maintain the landscape of the Bukchon area in terms of beauty formed by the elevation of Urban Traditional House and the continuity of roofs while accommodating various functions. As in total conservation or partial conservation, the interior remodeling of individual houses may be allowed but the three-dimensional external appearance composed of the outer walls, fences and roofs of Korean-style houses should be repaired and improved in a way of maintaining the image. In order to utilize Urban Traditional House in the Bukchon area, plans should be made in consideration of its location, historicity and tradition. We may expect the utilization of traditional cultural facilities and their surrounding areas as alternative cultural spaces. Such use of individual Urban Traditional House should be extended by linearly and areally and suggest the direction of conservation and utilization.

• Journal of Korean Port Research
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• v.14 no.4
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• pp.419-427
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• 2000

Today travel demand continues to increase with spread of economic zones. Also, urban freeway plays an important role in intra-zone transportations as a major corridor in a big city. However, most of urban freeways experience a severe congestion with the excess of inflowing or outflowing traffic through freeway ramps. The purpose of this study is to identify the traffic characteristics, analyze the relationships between the traffic characteristics and finally construct the speed predictive models on the ramp junctions of urban freeway under the intelligent transportation system(ITS) settings. From the analyses of traffic characteristics following results were obtained: ⅰ) 24 hours average traffic characteristics flow, occupancy, speed under the ITS settings showed about 40%, 38%, 8.8% increase each on urban freeway junctions period when compared with that under the non-ITS settings each other. Free flow speed and traffic flow on the mainline sections of urban freeway under the ITS settings also showed about 20% and 17% increase when compared with that under the non-ITS, respectively. ⅱ) The upstream when compared speed( $S_{u}$)and downstream occupancy( $O_{d}$) were especially shown to have higher explanatory powers on the stable flow ramp junctions, but the upstream speed( $S_{u}$) and downstream flow( $V_{d}$) were especially shown on the unstable flow ramp junctions of urban freeway under the ITS settings.ngs.ngs.

• Korean Journal of Family Social Work
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• no.55
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• pp.5-30
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• 2017

This study aims to analyze the influence of network of elderly with his or her non cohabiting children on their depression and its regional differences between urban and rural areas. The analysis is based on the sample of 1,609 elderly of 65 and above (1,011 Urban residents and 598 Rural residents) from the third time span(year 2010) to the fifth time span(year 2014) collected by the Korean Longitudinal Study of Ageing, whose research conducted by Korea Employment Information Service. First, it is found that rural elderly are more likely to suffer from depression than urban elderly. Second, it is found that rural elderly have on average a bigger number of non cohabiting children in their network, whereas geographical proximity and frequency in meeting, and economic support is stronger upon urban elderly. Third, urban elderly tend to suffer from depression as the frequency of phone calls with their non cohabiting children increases with time, and as the frequency of meeting and relationship satisfaction is decreases with time, whereas rural elderly tend to suffer from depression as their geographical proximity with their non cohabiting children is decreases with time. Based on the results of this analysis, this study further suggests practical policy interventions to prevent elderly depression.

• Journal of Korean Society on Water Environment
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• v.24 no.4
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• pp.430-435
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• 2008

In order to design Non-point source management, the aspect of statistical features of the entire precipitation data should be focused since non-point source discharge is driven by continuous rainfall runoffs. 3-parameter mixed exponential probability density function is used to establish urban stormwater capture curve instead of previous single-parameter exponential PDF. Then, recent 10-year data in Busan are applied to establish the curve. The result shows that 3-parameter mixed PDF gives better resolution.