Data for EIA and Its Presentation in Korea

이현영,Lee, Hyoun-Young 한국환경영향평가학회 1993 환경영향평가 Vol.2 No.2

Increasing concern for the environment in Korea has led to the demand that major policies and large-scale development projects be subjected to detailed impact assessment. This paper reports on the state of data related to the prediction of the environmental impact (EIA) to emphasize the importance of data quality. Environmental impact statements (EIS) consulted with the Ministry of Environment of Korea were analyzed from 1981 through 1992. Many of assessors used existing data and collected supplementary data from field survey. Most of the results of EIA are presented directly or summarized on maps and as graphics. For the national purpose, large source of quality-controlled data such as atmospheric data have been developed, However, there are the deficiency in data to analyze the impact of human activity, and data gaps and incompatibilities among systems. Consequently, the development of data bank systems including computer database and remotely-sensed satellite data is required to improve the quality of data which are relevant to EIA. The data bank system should be organized meaningfully in minimum time with a least cost, and measurement standards must be made explicit. Geographical information systems (GIS) are applicable to the graphic presentation or to the impact prediction model.

토지이용 변화가 국지기후에 미치는 영향

이현영 ( Hyoun Young Lee ) 大韓遠隔探査學會 1995 大韓遠隔探査學會誌 Vol.11 No.3

한국의 수도권 지역에서는 토지이용의 변화가 근래 급격하게 이루어지면서 국지기후에도 변화가 나타나고 있다. 본 연구는 지난 20년간의 토지이용변화의 특성 및 규모를 분석하여 이 변화가 국지기후에 미치는 영향을 파악하고자 하였다. 연구지역에서의 도시화는 상당히 빠른 속도로 진행되고 있어 현시 점에서는 토지이용변화의 규모를 지도나 문헌조사 만으로는 충분히 조사할 수 없기 때문에 본 연구에서는 Landsat 자료를 이용하여 토지이용 변화의 양상 및 규모를 밝히고, 기상자료(용도, 습도, 안개 등)의 시계열적 분석으로 토지이용의 변화가 국지기후에 미치는 영향을 파악하고자 하였다. 그러나 측후소에서 관측된 기상자료 만으로는 기상요소의 공간적 분포를 이해할 수가 없기 때문에 NOAA AVHRR 열적외선 자료를 이용하여 온도의 공간분포를 규명하고, GIS 기법(Geographic Information Systems)을 활용하여 시각적 효과를 높이므로 써 지역정책을 수립할 때 의사결정에 도움을 주고자 하였다. 분석결과에 의하면 수도권지역의 녹지는 지난 20년간(1972-1992)에 94%에서 62%로 감소된 데 반하여 도시적 토지이용은 4%에서 39%로 크게 증가되었다. 토지이용의 변화에 따른 생물자원의 감소는 열수지 및 수분수지에 변화를 초래하여 국지기후 내지 미기후에 영향을 미칠 것을 암시하고 있으며, 실제로 연구지역내의 국지기후는 점차 건조화·온난화 추세를 보이고 있다. 그러므로 인간의 활동이 국지기후에 미치는 바람직하지 못한 영향과 위험한 오염을 효율적으로 저감시키려면 토지이용의 변화가 환경에 미치는 영향에 관한 보다 깊은 연구가 절실히 요청된다. The land-use has changed rapidly during the last two decades in accordance with urbanization in the Seoul Metropolitan Region. As a result of these changes, the local climate has undergone changes as well. This study intends to define the land-use changes, and then to show how they have brought in significant changes in the local climates. Land-use changes in the study area so rapidly that up-to date maps and documents are not available at present. Therefore, Landsat data for land-use classification and NOAA AVHRR thermal data for the temperature fields were analyzed. Additionary, to visualize the effect of the land-use on the local climate, computer-enhanced brightness temperatures, Green Belt and city boundaries were overlaid on land-use patterns obtained from satellite images using GIS techniques. The results of analysis demonstrate that Green Space in the Seoul Metropolitan Region decreased from 94% to 62% while urban land-use increased ten times, from 4% to 39% for the period of 1972-1992. The resulting disappearance of biomass caused by land-use changes may have implications for the local-and micro-climate. The results show that the local climate of the study area became drier and warmer. This study also suggests a need for further studies of man`s effects on local climate to minimize adverse influences and hazardous pollution and efficacious ways for urban planning.

한국(韓國) 중부지방(中部地方)의 하계뢰우(夏季雷雨) 연구(硏究)

이현영 ( Hyoun Young Lee ),이승호 ( Seung Ho Lee ) 건국대학교 기초과학연구소 1991 理學論集 Vol.16 No.-

The purpose of this paper is to understatand the characteristics of summer-thunderstorms in central Korea, and to provide basic data necessary in mitigating the damages due to thunderstoms. From the anlysis of meteorological data for the period of 10 years(l979-1988), five regions of thunderstoms were identified, based on geographical and meteorological conditions as well as time and frequency of the occurance of thunderstorms. In central Korea, 82% of summer-thuderstorm days were produced from fronts, and most of thunderstorms from air masses occured more frequently in basins such as Wonju or the metropolitan Seoul area. It was also noted that frequency of thunderstorms is 30 % higher in urban areas than in rural areas. Thunderstorms originated from air masses showed positive relationship with the population of cities and the altitude of weather stations.

도시기후와 도시생태

이현영 ( Hyoun Young Lee ) 한국환경생태학회 1998 한국환경생태학회지 Vol.11 No.2

AHSS의 버링가공성에 미치는 전단면의 영향

이현영(Hyoun Young Lee) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12

Low stretch flange-ability of AHSS is a main issue for being used in automotive. One of the representative index for stretch flange-ability is hole expansion ratio(HER). HER is mainly affected by geometry and clearance of punching tools while shearing the hole. The effect of sheared-edge quality on HER is investigated for several punching tools. Three types of punch shape(Conventional, sheared-angle and humped) and four die clearance are considered for 780MPa grade automotive steel.The test materials are hot rolled dual phase steel and Ferrite-banite steel with 3.2mm thickness. For each case of punch type and clearance, the hardness and roughness are measured at burnish zone and fracture zone. The plastic strain near the sheared edge called shear-affected zone(SAZ) for punching is main factor for HER.

학교(學校) 교실(敎室)의 실내환경(室內環境) 실태(實態) 조사(調査) 연구(硏究)

김강환(Kim, Kang-Hwan),이현영(Lee, Hyoun-Young) 한국교육시설학회 2000 敎育施設 Vol.7 No.3

The purpose of this study is to analyze the environmental characteristics of Hansung Girls' Middle & High School located on the northern slope of Mt. Naksan in Seoul but sited at different aspects. The measured temperature and illumination in March, July and December were analysed. The proportion of window size and questionaries were used also. The results of observation are as follows: (1) The temperature of the southward classrooms was higher than eastward or westward classrooms in March, but the difference of the both values in July were only in the average. (2) The temperatures in December decreased in the order of aspects: southward, westward and eastward. (3) The highest values for illumination appeared in the classroom faced to the south and the values decreased from westward to eastward. (4) Temperatures and illumination were varied not only with the aspect but also with the number of story and the proportion of the window size. However, the heating facilities and illuminators are installed evenly without considering the condition of the buildings. The heating facilities should be installed differently according to the direction and height of the story of the building. The heating facilities should be installed sparsely for the classrooms faced southward, and more densely near the hallway side to achieve satisfaction of students and to save expenses of heating. It will be better that electric power switches for window side have to be set separately from hallway side. Improvement of the condition of illumination and temperatures will help students to promote their health and learning.

HPLC를 이용한 식품중 허용 외 색소의 동시분석에 관한 연구

김천회(Cheon-Hoe Kim),이민재(Min-Jae Lee),김경옥(Keoung-Ok Kim),이현영(Hyoun-Young Lee),양주홍(Joo-Hong Yang),허석(Seok Heo),박종석(Jong-Seok Park),장영미(Young-Mi Jang),김희연(Hee-Yun Kim) 한국식품과학회 2008 한국식품과학회지 Vol.40 No.4

식품에 사용이 금지된 허용 외 색소 중 Orange Ⅱ, Rhodamine B, Para red, Sudan I-Ⅳ 색소의 효율적인 수입식품 안전관리와 수용성 착색료 및 지용성 착색료로 이원화되어 있는 허용 외 착색료의 신속하고 정확한 분석을 위하여 동시 분석법을 개발하고자 하였다. 문헌조사를 바탕으로 분석을 위한 컬럼, 이동상 조건, 분석파장, 전처리 조건 등을 검토하여 분석법을 개발하였으며, 개발된 분석법의 검출한계 설정, 유효성 검증 및 회수율을 검토하였다. 26가지 제품에 대한 회수율 검토결과 Orange Ⅱ는 96.46-121.26%, Rhodamine B는 70.86-106.53%, Para red는 97.00-116.86%, Sudan Ⅰ은 92.93-112.44%, Sudan Ⅱ는 96.63-115.10%, Sudan Ⅲ는 92.21-114.73%, Sudan Ⅳ는 93.22-122.91%의 회수율을 나타냈다. 본 분석법 검량선의 상관계수는 0.999 이상을 보였으며 정밀성의 RSD는 0.8-1.39%로서 모두 2 이하의 값을 보였으며, 정확성은 90% 이상을 나타냈다. 이때, 검출한계 및 정량한계는 각각 0.1㎎/L, 0.3 ㎎/L로 결정하였다. This study developed the simultaneous analysis method for efficient safety controls of import food of Orange Ⅱ, Rhodamine B, Para Red, and Sudan dye I-Ⅳ among disapproved coloring agents that use is prohibited in foods. The analysis method was developed according to the sample pre-treatment and HPLC conditions, and a documentary survey was used to establish the detection limit of the method, followed by effectiveness verification and recovery percentage examinations. Recovery percentage examination for 26 products resulted Orange Ⅱ displayed recovery percentage of 96.46-121.26%, Rhodamine B displayed recovery percentage of 70.86-106.53%, Para Red displayed recovery percentage of 97.00-116.86%, Sudan Ⅰ displayed recovery percentage of 92.93-112.44%, Sudan Ⅱ displayed recovery percentage of 96.63-115.10%, Sudan Ⅲ displayed recovery percentage of 92.21-114.73%, Sudan Ⅳ displayed recovery percentage of 93.22-122.91%. Correlation coefficient of gradient of this analysis method exhibited more than 0.999, RSD exhibited fewer than 2 as 0.8-1.39%, exactitude exhibited more than 90%. At this time, detection limit and fixed quantity limit decided by each 0.1 ㎎/L, 0.3 ㎎/L.

이온크로마토그래프를 이용한 조제유류 및 영아용·성장기용 조제식 중 콜린 함량 분석법 연구

황경미,함현숙,이화정,강윤정,윤혜성,홍진환,이현영,김천회,오금순,Hwang, Kyung Mi,Ham, Hyeon Suk,Lee, Hwa Jung,Kang, Yoon Jung,Yoon, Hae Seong,Hong, Jin Hwan,Lee, Hyoun Young,Kim, Cheon Hoe,Oh, Keum Soon 한국식품위생안전성학회 2017 한국식품위생안전성학회지 Vol.32 No.5

This study was conducted to establish the analysis method for the contents of choline in infant formulas and follow-up formulas by ion chromatograph (IC). To optimize the method, we compared several conditions for extraction, purification and instrumental measurement using spiked samples and certified reference material (CRM; NIST SRM 1849a) as test materials. IC method for choline was established using Ion Pac CG column and 18 mM $H_2SO_4$ mobile phase. The parameters of validation were specificity, linearity, LOD, LOQ, recovery, accuracy, precision and repeatability. The specificity was confirmed by the retention time and the linearity, $R_2$ was over 0.999 in range of 0.5~10 mg/L. The detection limit and quantification limit were 0.14, 0.43 mg/L. The accuracy and precision of this method using CRM were 95%, 2.1% respectively. Optimized methods were applied in sample analysis to verify the reliability. All the tested products were acceptable contents of choline compared with component specification for nutrition labeling. The standard operating procedures were prepared for choline to provide experimental information and to strengthen the management of nutrient in infant formula and follow-up formula. 본 연구는 "축산물의 가공기준 및 성분규격"에 기준규격은 설정되어 있지 않으나, 국제 기준과의 조화를 위해 콜린의 분석법을 마련하고자 수행하였다. 조제유류에 함유된 콜린 함량 분석을 위해 IC를 이용한 분석법을 확립하고 시중에 유통 중인 제품을 대상으로 적용성을 검토하였다. 콜린 표준품을 이용하여 IC를 이용한 기기분석조건을 확립하고 시료중의 콜린을 추출하여 분석하였다. 분석법 검증은 특이성, 직선성, 검출한계 및 정량한계, 정확성, 정밀성에 대해 수행되었다. 0.5~10 mg/L의 농도범위에서 $R^2=0.999$ 이상의 우수한 직선성을 확인할 수 있었으며, LOD와 LOQ는 각각 0.14, 0.43 mg/L였다. CRM (NIST SRM 1849a) 및 표준물질 첨가법을 이용하여 정확성을 검토하였으며, CRM에서 95%, 조제분유에서 90~91%, 조제우유에서 81~98%의 회수율을 확인할 수 있었다. 정밀성을 검토한 결과 시료 채취량에 따른 반복성은 RSD값이 조제분유 0.4~2.0%, 조제우유 0.5~1.5%, 영아용조제식 0.6~1.0%, 성장기용조제식 0.8~2.7%,로 확인하였으며, 실험일자에 따른 재현성은 조제분유 3.1%, 조제우유 2.5%, 영아용조제식 4.8%, 성장기용조제식 2.7%로 확인하였다. 본 연구에서 확립된 분석법을 적용하여 조제분유 11건, 조제우유 2건, 성장기용조제분유 9건, 영아용조제식 2건, 성장기용조제식 8건 등 국내 유통 중인 조제유류 및 영아용 성장기용조제식 등 32건에 대해 적용성 검토를 실시한 결과 전체 시료에서 분석이 용이하였으며, 모두 표시기준에 적합함을 확인하였다.

연구논문: 원격탐사 자료를 이용한 천수만 간석지 환경변화에 관한 연구

장동호(Dong Ho Jang),지광훈(Kwang Hoon Chi),이현영(Hyoun Young Lee) 한국환경영향평가학회 2002 환경영향평가 Vol.11 No.1

The purpose of this study is to analyze the geomorphological environment changes of tidal flat in the Cheonsu Bay. Especially, it centers on the changes in the sedimentary environment using remote sensing data. Multi-temporal Landsat data and topographic maps were used in this study. The results are summarized as follows: the tidal flat of Cheonsu Bay changes in many ways depending on the direction of the tidal current. In the neighborhood of Ganwoldo, the scale of the tidal flat has continuously been expanded due to the superiority of sedimentation after a tide embankment was built. When we analyzed the grain size of sediments and implemented in-situ field survey, it was found that the innermost part of the bay consists of a mud flat, with the midway part mixed flat, and the nearest part to the sea sand flat. On the other hand, in the neighborhood of Seomot isle and its beach, sedimentation is superior in the eastern part whereas erosion is superior in the western part. In other words, the western coast of the beach is contacted with the open seas and under much influence of ocean wave. The eastern coast is placed at the entrance of the bay and has sand bar and tidal flat developed due to submarine deposits that are accumulated on the sea floor by the tidal current. In conclusions, remote sensing methods can be effectively applied for quantitative analysis of geomorphological changes in tidal flat, and it is expected that the proposed schemes can be applied to another geomorphological environments such as beach, sand dune, and sand wave.

Landsat TM 자료와 표충퇴적물 분석을 통한 천수만 간석지 퇴적물 분류

장동호 ( Dong Ha Jang ),지광훈 ( Kwang Hoon Chi ),이현영 ( Hyoun Young Lee ) 한국환경영향평가학회 2002 환경영향평가 Vol.11 No.4

This study aimed at verifying the grain-sized distribution of surface deposits in a tidal flat using multi-spectral Landsat TM. In this study, we employed the grain-sized analysis, PCA and unsupervised classification techniques for analyzing the distribution of deposits. As a result in this study, the unsupervised classification method using PCA image was found to be most useful in classifying tidal flat deposits using satellite data. This method is considerably effective in analyzing not only the aspects of distribution in terms of accumulated deposits and erosion, but also the changes in seaside topofraphy and shoreline. The grain-sized distribution analysis indicates that the mud flat inside the Cheonsu-bay tidal flat is disrtibuted, the mixed flat located in the middle, and the sand flat distributed near the sea. The sand flat is dominant around the southern part of Seomot isle and its beach. On the other hand, the mud and mixed flat is dominant on the western part. Likewise, the western coast of Seomot isle and its beach is significantly affected by waves facing the offshore. However, the eastern side of the bay could be a site for the evolution of tidal flat made of fine materials where it is less affected by ocean waves. These results show that multi-spectral satellite data are effective for the classification of distribution materials and environmental impact assessment and cintinuous monitoring. In particular, the research on environmental deposits can provide important decision-supporting information for decision-making on seaside development, by analyzing the progress of deposits and environmantal changes.