• Korean Journal of Environment and Ecology
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• v.37 no.6
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• pp.499-507
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• 2023

This study conducted an empirical analysis on a land purchase requisition policy in Bukhansan National Park to draw the efficacy, limitations and implications of this policy. A logistic regression analysis was conducted to identify factors that affected the landowners' decision on applying for land purchase requisition using the government's records on acquisition of private lands in the park since 2006 when this policy began to be implemented. Results illustrate that the probability that a landowner applied for purchase requisition increased if the land was classified as forest, if a large proportion of the land was designated as the nature conservation district, if it was located farther from park boundary, and if it had higher appraised value per square meter. These results indicate that as the landowners had less chance to utilize their lands, they more likely apply for purchase requisition. These results also imply that the government can achieve a high conservation performance level if private lands are acquire by the land acquisition requisition policy. The logistic regression model also predict that 401m² of the private lands in Bukhansan National Park will likely be purchase-requested in future. Despites its usefulness in mitigating landowners' complaints in national parks, the land purchase requisition policy has not been widely utilized. Based on these empirical results, this study provides policy implications to facilitate the ulitization of this policy.

• Journal of Environmental Policy
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• v.5 no.2
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• pp.27-47
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• 2006

Attempts were made to increase an efficiency of soil contamination investigation systems(SCISs) including Soil Contamination Fact-Finding Investigation Sites and Special Soil Contamination Management Facility Sites in Korea. In order to increase low efficiencies resulting from inappropriate SCISs, possible policy suggestions are driven based on the results from problem findings of Korean policy and comparisons of policies in industrialized countries including United States, United Kingdom, Germany, the Netherlands and Japan. First, functions of Soil Environment Conservation Act(SECA) on liability should be updated and reinforced to initiate a soil contamination investigation process for stakeholders including an owner(s) or a responsible party(ies) of the potentially soil contamination sites positively. Second, appropriate SCISs should be emerged for implementing the Soil Contamination Fact-Finding Investigation Sites and Special Soil Contamination Management Facility Sites properly. Stakeholders for the potentially contaminated sites should easily access and raise the soil contamination issues, and soil contamination investigation implemented by liable and profit environment (consulting) companies should be encouraged. Third, the soil contamination reporting system of SECA needs to change legally responsible. Further more, public announcement system showing soil quality of a site which exceeds a certain scale would be considerable. Fourth, liable environment (consulting) companies should legally execute Soil Environment Assessment of SECA.

• Korean Journal of Soil Science and Fertilizer
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• v.45 no.2
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• pp.266-271
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• 2012

This study was carried out to evaluate the land suitability for southern-type garlic cultivation associated with both temperature and soil constraints. The suitability analysis was conducted with hourly temperature data from 2001 to 2010 at all fifty seven meteorological stations and the soil-based suitability map of garlic provided by Rural Development Administration. Firstly the temperature data were processed by the growth stages (germinating, bulbing, and winter vegetation season), and then were adopted to limit the irrelevant lands. Next, as a result of overlaying each soil and temperature suitability map, the total 274,339 ha of area was mapped as highly suitable or suitable for southern-type garlic cultivation and the top four of the largest classified si-guns were identified as Naju, Jeongeup, Gochang, and Jinju. On the other hand, the statistical records of KOSIS (KOrea Statistical Information Service) showed lower amount of cultivation area than the analyzed results in the major production sites, Goheung, Sinan, Haenam, and Muan. However, it should not be regarded as exceptional because farmer's preference might not correspond to potential land usability.

• Journal of Korean Tunnelling and Underground Space Association
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• v.4 no.4
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• pp.277-286
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• 2002

Most of the problems in dealing with the tunnel construction are the uncertainties and complexities of the stress conditions and rock strengths in ahead of the tunnel excavation. The limitations on the investigation technology, inaccessibility of borehole test in mountain area and public hatred also restrict our knowledge on the geologic conditions on the mountainous tunneling area. Nevertheless an extensive and superior geophysical exploration data is possibly acquired deep within the mountain area, with up to the tunnel locations in the case of alternative design or turn-key base projects. An appealing claim in the use of artificial neural networks (ANN) is that they give a more trustworthy results on our data based on identifying relevant input variables such as a little geotechnical information and biological learning principles. In this study, error back-propagation algorithm that is one of the teaching techniques of ANN is applied to presupposition on Rock Mass Ratings (RMR) for unknown tunnel area. In order to verify the applicability of this model, a 4km railway tunnel's field data are verified and used as input parameters for the prediction of RMR, with the learned pattern by error back propagation logics. ANN is one of basic methods in solving the geotechnical uncertainties and helpful in solving the problems with data consistency, but needs some modification on the technical problems and we hope our study to be developed in the future design work.

• Journal of the Korean Institute of Landscape Architecture
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• v.37 no.1
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• pp.28-42
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• 2009

In the wake of categorizing the design changes occurred during the period from 2004 till the first half of 2006 in Choongcheong province area, based on purpose and reason of design changes identified by the Korea National Housing Corp, it included 11 types such as the image of the apartment complex, scenic elements, consideration by the user, prevention of the defect, constructability, site conditions, incompatibility between the activities, superordinate standard, prevention of civic complaints, design details and others, along with 47 subordinate elements. And the evaluation intended to identify the corelation between the number and time of design change approval, frequency and scale of design change by type and the cost variations indicated that; firstly, enhancing the image of the apartment complex proved to be the main reason for design changes, accounting for 22% in terms of frequency and 54.9% in terms of cost variation. Secondly, the higher the increase in cost by design change aimed at improving the image of the complex, the lower the decrease in cost by design change for uncertain reasons, dubbed the inverse proportional relations, indicating that the design changes for uncertain reasons were mostly aimed at reducing the construction cost. Thirdly, with regard to the number of design change approval and the time of the initial approval, twice or less and 90 days or less before completion of the construction work, respectively, accounted for $52{\sim}53%$, indicating the design change deliberation and approval tended to have been carried out collectively in the form of ex post facto approval, which seemed to be attributable to the attempt of reducing the construction cost or budget problem, as a result of comparing with the cases in which the cost was reduced.

• Korean Journal of Construction Engineering and Management
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• v.16 no.1
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• pp.74-81
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• 2015

As one of urban infrastructure system, the electricity substation is critical for urban life and industrial activity as the electricity demands get higher than ever. However the substation is generally regarded as unpleasant or dangerous facility, which finally results in the continuous opposition movement by resident due to the belief of unidentified negative effect in apartment prices. Accordingly, as the scientifically objective and quantitative analysis is required to solve the social conflict, this study intends to examine the variation affected by urban infrastructure system, expecially for substation. After the independent variable defining the price of apartment and the dependent variable, which is apartment price, are identified and their spatial data has been filed, the forecasting model has been developed through the hedonic price function as well as artificial neural networks system. The research finding indicated that the spatial range affected by substation is not notable and the range of some case was applicable for less than 600m. It is expected that these research findings can be applied for establishing the one of solid cases for the analysis of economical effect to local housing market by the urban infrastructure system.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.981-986
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• 2007

현재 인천연안에는 홍수방지와 원활한 하천수 방류를 목적으로 많은 유수지가 설치되어 있다. 그러나 이들 유수지는 유역으로부터 유입된 오염물질의 축척으로 수질이 심각한 상태에 있으며 대부분의 유수지 수질이 5등급을 초과하는 등 악취에 의한 민원도 증가하고 있는 실정이다. 특히 이러한 유수지를 통해 저류되었던 유량이 해안으로 방류되면서 인천연안의 해양수질에 악영향을 미치게 되어 해양수질 개선에 큰 장애물이 되고 있는 것이 사실이다. 이러한 상황에서 최근 인천의 승기천, 장수천, 굴포천을 포함한 5대 하천복원사업이 활발히 진행되고 있는데, 특히 승기천의 경우 승기천 본류에 대한 하천복원사업이 성공적으로 마무리되기 위해서는 승기천 최하류에 위치하고 있는 남동유수지와 연계된 하천복원이 이루어져야 할 것이다. 그러나 현재 진행되고 있는 승기천 복원사업은 남동유수지와는 별도로 진행되고 있어 승기천의 성공적인 복원을 위해서는 남동유수지가 당면하고 있는 수질개선 문제, 퇴적된 저니의 준설 문제, 향후 남동유수지의 운영 개선방안 등에 대한 구체적인 해결방안이 필수적으로 마련되어야 한다. 과거 남동유수지의 수질을 개선하기 위하여 1996년과 1997년에 열대성 식물인 부레옥잠을 유수지에 식재하여 남동유수지의 자연정화를 유도하려는 시도가 있었으나, 예산의 과다소요와 동절기 정화능력 상실 및 부레옥잠 사멸시 2차 오염 초래의 문제 등으로 인하여 사업을 중단하였고 같은 해 유수지 퇴적물의 준설을 통한 수질개선도 시도하였으나, 퇴적물 성분 중에 함유된 중금속으로 인해 준설토의 처리문제가 해결되지 못해 사업이 유보되어 남동유수지는 현재까지 특별한 환경개선 방안이나 운영방안 없이 유지되고 있는 실정으로 남동유수지가 현재와 같은 상황으로 유지된다면 승기천 복원사업 종료 이후에도 남동유수지는 생활환경을 저해하는 지배적인 요인으로 남게 될 것이다. 본 연구에서는 현재 진행중인 승기천 오염하천 정화사업이 종료되는 시점을 기준으로 남동유수지에 대해 승기천과 연계한 유수지의 환경개선 방법을 제안하였다. 준설을 통해 유수지의 근본적인 오염원을 제거하고 남동유수지 유입부에 인공습지와 수처리설비를 설치하여 유수지의 수질을 개선하고 개선된 수질이 3급수로 유지하도록 하였으며, 설치된 인공습지에는 철새도래지를 조성하여 유수지 유입수인 철새가 날아드는 하천인 승기천의 테마와 연계하도록 하였다. 인공습지 주변으로 식생호안을 설치하고 유수지 주변에는 산책로를 설치하여 지역주민들의 친환경 수변공간으로 활용하도록 하였다. 1유수지와 연결된 2유수지는 BTL사업을 통해 주변공단으로부터의 오폐수를 원천적으로 차단하도록 하였으며 2유수지를 매립하여 지하는 강우시 유출수 저류가 가능한 화물차주차장으로 활용하고 지상은 녹지공간으로 조성하여 공단근로자 및 지역주민을 위한 휴식공간으로 활용될 수 있도록 제안하였다. 본 연구는 남동유수지 환경 개선 사업 실행을 위한 정책 연구로 연구결과를 인천시가 적극 수용하기로 결정함에 따라 인천시의 환경 현안 문제인 남동유수지의 수질개선을 통해 시민의 휴식 및 여가선용 공간으로 활용하기 위한 사업의 기초자료로 활용되며 이미 설계검토가 시작되었다. 본 연구결과는 유수지 및 저수지의 환경개선 사업의 선두적인 성공사례로 국내 타 지역의 유사한 사업에 있어 벤치마킹을 할 수 있는 훌륭한 사례가 될 것이다.

• Journal of the Korea Organic Resources Recycling Association
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• v.2 no.1
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• pp.31-40
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• 1994

In the later part of 1980's, a great emphasis has been placed on the treatment issues of livestock wastes due to the continuous increase in consumption of livestock and meat products. Continued economic development for three decades has enhanced the nationally general level of life for the purpose of exit out of absolute poverty, thus accompanied with people's demand for a quality of environment beyond the traditional economic factors over times. Such an individual or collective demand for environment of life has been primarily focussed and argued on only rural environment in the early development periods. In perspective of clean water supply and security for urban area, however, it is more important to treat livestock wastes in the oriented-sustainable environment than in the conventional ways without working on environment degradation. Livestock wastes composed of the high-concentrated organic matter ought to be controlled and treated in sound ways, if not, which on one hand may result in pollution of underground water, surface water and a nasty smell, and on the other hand also may cause people to file a civil petition. Therefore on the research paper, reviewing occurrence of livestock waste and situation of treatment in details, through scrutinizing the government regulation and financing or subsidizing for it, author intends to find out the initiative of 'resourcefication' of treating of livestock wastes in the environmental soundness and efficiency

• The Journal of Sustainable Design and Educational Environment Research
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• v.15 no.1
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• pp.30-39
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• 2016

Students receiving plan is not based on short-term indicators, such as student-centered, student-induced factor to address school needs new complaint, it is necessary to establish the school in the center of a long-term (30 years) perspective. Therefore, analysis of Cheongju students can examine the entire 30 years of the elementary school in this study are as follows: First, given the increasing number of students in seven models and presented the case to its types. Second, considering the geographical characteristics and the development of regional characteristics classify 55 elementary Schools in Cheongju City by dividing the number of students increase or decrease trend to 10 zones the results are as follows: Students Number increasing school group of 4 schools, 15 schools students Number fell in shot Term, the Students Number dropped in middle Term 26 schools, 10 was a small school. In particular, it is urgently necessary to establish measures for these small schools. Third, despite the reduced number of students indicated in the analysis result, caused the social conflict factors by excessive new school requirements. It also caused a number of students from schools when the Curve of Students Number are to remain flat or decline. It shows that no additional new demand of School in the region. Fourth, the number of students increasing trend forecasting model

• Analytical Science and Technology
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• v.15 no.6
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• pp.556-566
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• 2002

Gunpo city, a medium sized city formed with a basin is populated with a little more than 270,000 peoples and includes the industrial area with about 600 factories. It has been recognized for a long time that peoples living nearby industrial area have complained on serious air contamination due to the geographical and environmental factors. This study was performed on measurement of volatile organic compounds (VOCs) and malodor for the air sampled in various places of Gunpo city, and made comparison with VOCs levels in specific area of Seoul. This work would play important role for the efficient management of air contamination of Gunpo city. Samplings were done in the rooftop of eleven village office buildings including Gunpo station in June 12th, 2001. Analytical results indicate that VOCs levels of Gunpo-1-dong, Gunpo station and Kumjungdong regions neighboring industrial area were much higher than the rest of areas, and this fact shows that the origin for air contamination of Gunpo would be industrial area than car exhaustion gases.