國內 中小企業의 環境經營시스템 構築에 관한 硏究

이근상,李根祥 한국자원공학회 2004 한국자원공학회지 Vol.41 No.2

In recent years, environmental issues have been become critical concerns of business even to the small and medium firms. Many domestic companies are rapidly accepting environmental management systems(EMS) that confirm ISO 14001 guidelines in order to remain competitive in the global market place. This paper aims to review and analyze major procedures during the pursuit and implementation of ISO 14001 in the small and medium firms. Upon resulting on questionaries surveyed 74 domestic small and medium companies already certified, this study identified and ranked key characteristics of the sample companies, motivational factors corresponding to ISO 14000 certification, detailed decision factors during major steps of the certification process, and problems and hindrance factors in adopting ISO 14001 standards. Results of this study could be useful to other small and medium firms that are in the process of adopting the standard where they do not have clear pictures of critical factors for successful implementation. 최근 환경 문제가 중소기업에게도 중요한 관심사로 부각되고 있다. 국내에서도 세계 시장에서 경쟁력을 유지하기 위하여 ISO 14001 인증을 통한 환경경영시스템의 보급이 급속히 확산되고 있다. 본 연구에서는 국내 중소기업들의 환경경영시스템(ISO 14001) 추진 및 인증단계에서의 주요 과정을 조사, 분석하였다. 이를 위하여 인증을 취득한 74개 중소기업을 대상으로 설문조사를 실시하였다. 응답 결과를 바탕으로 조사대상 기업의 주요 현황, ISO 14001 인증의 동기 및 목적, 인증 과정 중의 주요 단계별 결정 요인들, 인증 과정에서 직면한 주요 문제들을 파악하고 순위를 결정하였다. 본 연구의 결과는 환경경영시스템의 도입을 원하는 여타 중소기업들이 ISO 14001을 성공적으로 구축하는데 필요한 핵심요인들을 이해하는데 유용한 자료로 활용될 수 있다.

토지피복도 자료원에 따른 대청댐유역 수질특성 비교

이근상,박진혁,최연웅,Lee, Geun Sang,Park, Jin Hyeog,Choi, Yun Woong 대한공간정보학회 2012 한국공간정보학회지 Vol.20 No.5

본 연구에서는 공간정보 자료원에 따른 수질특성의 영향을 비교하였다. 먼저, 비점오염부하량 평가에 영향을 미치는 토지피복별 기대평균농도(EMC)를 효과적으로 계산하기 위해, 영상분류를 통해 대청댐유역의 토지피복도를 구축하였으며, 이를 환경부 대분류 자료와 비교한 결과 88.76%의 높은 정확도를 확보하였다. 또한 토양도와 영상분류에 의한 토지피복도를 공간 중첩하여 유출곡선지수와 직접유출을 계산하였으며, 분석 결과 석천과 대청댐 유역이 가장 높게 나타났다. 그리고 직접유출과 기대평균농도를 조합하여 계산한 BOD에 대한 비점오염부하량은 삼가천합류점과 소옥천하류 유역이 높게 나타났으며, TN과 TP에 대한 비점오염부하량에서는 삼가천합류점과 봉황천하류 유역이 높게 나타났다. 영상분류에 의한 비점오염부하량의 효용성 평가를 위해 환경부 토지피복도에 의한 비점오염부하량과 상호 비교한 결과, 대청댐상류 유역에서 BOD, TN, TP에 대한 오염부하량의 오차가 각각 10.64%, 11.70%, 20.00%로 가장 크게 나타났다. 따라서 유역내 수질특성을 효과적으로 모의하기 위해서는 논과 밭이 포함된 공간정보를 활용하는 것이 비점오염부하량 평가에 바람직하다고 본다.

GIS 기반 침수범람지역의 지목정보 분석

이근상,심정민,최인호 한국지적정보학회 2009 한국지적정보학회 학술발표대회 논문집 Vol.2009 No.12

매립지반의 화학적 불균질성이 침출수 이동에 미치는 영향

이근상,Lee Kun-Sang 한국지하수토양환경학회 2006 지하수토양환경 Vol.11 No.5

The objective of this study is to assess impacts of sorption heterogeneity on the transport of leachate leaked from unlined landfill sites and is accomplished by examining the results from a series of Monte-Carlo simulations. For random distribution coefficient ($K_{d}$) fields with four different levels of heterogeneity ranging from homogeneous to highly heterogeneous, the transport of leachate was investigated by linking a saturated flow model with a contaminant transport model. Impacts of a chemical heterogeneity were evaluated using point statistics values such as mean, standard deviation, and coefficient of variation of the concentration obtained at monitoring wells from 100 Monte-Carlo trials. Inspection of point statistics shows that the distribution of distribution coefficient in the landfill site proves to be an important parameter in controlling leachate concentrations. In comparison to homogeneous sorption, heterogeneous $K_{d^-}$ fields produce the variability in the leachate concentration for different realizations. The variability increases significantly as the variance in the $K_{d^-}$ field and the travel time between source and monitoring well increase. These outcomes indicate that use of a constant homogeneous $K_{d}$ value for predicting the transport of leachate can result in significant error, especially when variability in $K_{d}$ is high.

GIS 기반 FLUMEN 모형을 이용한 남대천 홍수범람 모의실험

이근상,최연웅,Lee, Geun-Sang,Choi, Yun-Woong 대한공간정보학회 2010 한국공간정보학회지 Vol.18 No.2

This study simulated flood inundation each frequency rainfall using GIS spatial information and FLUMEN model for part of Muju-Namdae Stream. To create geomorphology for the analysis of flood inundation, Triangle Irregular Network(TIN) was constructed using GIS spatial interpolation method based on digital topographic map and river profile data, unique data source to represent real topography of the river areas. And also flood inundation was operated according to the levee collapse to consider extremely flood damage scenarios. As the analysis of result, the inundation area in the left levee collapse showed more high as 3.13, 3.69, and 4.17 times comparing with one of right levee for 50, 100, and 200 year frequency rainfall and showed 1.00, 2.15, and 3.34 times comparing with one of right levee in the inundation depth with over 1.0 meter, which can cause casualties. As the analysis of inundation area of the inundation depth with over 1.0 meter, which can cause casualties in left levee collapse, it increased more high as 263% and 473% when 50 year frequency change into 100 and 200 year frequency. Also As the analysis of inundation area of the inundation depth with over 1.0 meter in right levee collapse, it increased high as 123% and 142% when 50 year frequency change into 100 and 200 year frequency. Especially, the inundation area of the inundation depth with 3.0~3.5m showed more high as 263% and 489% when 50 year frequency change into 100 and 200 year frequency. It is expected that flood inundation map of this paper could be important decision making data to establish land use planning and water treatment measures.

수자원 업무 지원을 위한 공간정보 활용방안

이근상 대한공간정보학회 2009 한국지형공간정보학회 학술대회 Vol.2009 No.4

LiDAR와 MBES를 이용한 댐 저수지 3차원 공간영상정보 구축

이근상,최연웅,Lee, Geun-Sang,Choi, Yun-Woong 대한공간정보학회 2010 한국공간정보학회지 Vol.18 No.3

Recently, the construction of three dimensional spatial information of Dam reservoir area is very important part in Dam management work such as sediment survey, but it is difficult to acquire detailed terrain data because totalstation and single beam echo sounder are applied to terrain survey. This study presented method to construct detailed terrain data of Dam reservoir area using LiDAR and multi beam echo sounder. First, LiDAR survey was carried out in land zone and calibration process was applied by ground control point. And also the DEM of land zone was constructed by using algorithm, which eliminated building and vegetation class. As the result of validation of LiDAR DEM using GPS terrain survey, it was possible to construct three dimensional terrain data that was satisfied with the tolerance error of LiDAR, which was the standard error of LiDAR DEM showed as 0.108m. Also multi beam echo sounder was applied to the survey of water zone and it could construct spatial information that was satisfied with bathymetry surveying tolerance error of International Hydrographic Organization by validation with terrain survey data. And LiDAR and multi beam echo sounder data were integrated and it was possible to construct three dimensional spatial imagery information that can be applied to Dam management work such as the estimation of sediment amounts or the monitoring of terrain change by linking with high resolution orthophoto.

재귀호출 알고리듬 기반의 홍수전파 특성 분석

이근상,장영운,최연웅,Lee, Geun Sang,Jang, Young Wun,Choi, Yun Woong 대한공간정보학회 2013 한국공간정보학회지 Vol.21 No.5

This paper analyzed the flood propagation characteristics of each flood elevation due to failure of embankment in Muju Namdae Stream using recursive call algorithm. A flood propagation order by the flood elevation was estimated by setting destruction point at Beonggu and Chasan small dam through recursive call algorithm and then, the number of grids of each flood propagation order and accumulated inundation area were calculated. Based on the flood propagation order and the grid size of DEM, flood propagation time could be predicted each flood elevation. As a result, the study could identify the process of flood propagation through distribution characteristic of the flood propagation order obtained from recursive call algorithm, and could provide basic data for protection from flood disaster by selecting the flood vulnerable area through the gradient pattern of the graph for accumulated inundation area each flood propagation order. In addition, the prediction of the flood propagation time for each flood water level using this algorithm helped provide valuable information to calculate the evacuation path and time during the flood season by predicting the flood propagation time of each flood water level.

댐 수몰 및 주변지역의 축척 규모에 따른 오차분석

이근상,최연웅,황의호,채영강,Lee, Geun-Sang,Choi, Yun-Woong,Hwang, Eui-Ho,Chae, Young-Gang 대한공간정보학회 2010 한국공간정보학회지 Vol.18 No.4

댐은 생활에 필요한 물을 안정적으로 공급하고 여름철 집중강우에 의한 홍수피해를 저감하는 효과가 있으나, 댐 건설로 많은 토지나 가옥 등이 수몰되고 댐 주변지역의 환경에도 큰 영향을 주고 있다. 이러한 댐 주변지역의 생활환경을 개선하고 지원하기 위한 사업들이 시행되고 있으며, 본 연구에서는 GIS 공간중첩 기능을 이용하여 공간정보 축척에 따른 용담댐 수몰지역과 댐주변지역 면적오차 특성을 분석한 결과 다음의 결론을 얻었다. 첫째, 1/3,000 수치지형도를 기준으로 각 축척별 수몰지역 면적오차를 분석한 결과, l/5,000 수치지형도가 1/25,000 수치지형도에 비해 면적오차의 합과 표준오차 그리고 수몰지역 전체면적에 대한 면적오차의 합의 비율에서 각각 9.5배, 9.0배, 10.5배로 정확도 측면에서 매우 효과적임을 알 수 있었다. 둘째, 댐주변지역 면적오차를 분석한 결과, l/5,000 수치지형도가 l/25,000 수치 지형도에 비해 진안군 진안읍이 2km 이내 및 2~5km의 집수구역내 지역에서 각각 13.8배와 20.6배로 가장 큰 차이를 보였다. 또한 2km 이내의 집수구역외 지역에서는 점유면적 자체가 매우 작아 오차특성에 큰 차이를 보이지 않았으며, 2~5km 구간의 집수구역외 지역에서는 금산군 남이면이 31.8배로 가장 큰 오차특성을 나타냄을 알 수 있었다. 마지막으로 댐주변지역 면적오차의 합과 표준오차 그리고 주변지역 전체면적에 대한 면적오차의 합의 비율에서도 1/5,000 수치지형도는 1/25,000에 비해 각각 7.4배, 11.8배, 7.4배로 정확도 측면에서 매우 효과적임을 알 수 있었다.

소규모 지역에서 수치지도의 위치정확도 향상 방안에 관한 연구

이근상,장영률 한국공간정보학회 2001 한국공간정보학회지 Vol.9 No.2

With increasing of utilization of 1/1,000 Digital-Map being constructed with NGIS project, it is entering upon the stage that problem as the inspection of position accuracy of Digital-Map before its use. This paper evaluated position accuracy of Digital-Map being based on the construction of college facility management system into small area and presented modification/renovation of Digital-Map on area being occurred position error. With a view to evaluation of position error to building using RTK survey, position error was shown more than 0.5mm that is prescribed in survey-law. In order to acquire good position accuracy, first we carried out Static survey to college and selected control point. And, we evaluated coordinate value to important building from control point and compared these results with RTK survey results. Second, we carried out Affine transform based on the control point of building being surveyed with RTK, transformed pre-constructed Digital-Map and compared these results with RTK Survey results. We analyzed first and second method and presented improvement method of position accuracy of Digital-Map suited on small area.