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정인균 ( In Kyun Jung ),박종윤 ( Jong Yoon Park ),박민지 ( Min Ji Park ),신형진 ( Hyung Jin Shin ),정현교 ( Hyeon Gyo Jeong ),김성준 ( Seong Joon Kim ) 한국지리정보학회 2010 한국지리정보학회지 Vol.13 No.4
본 연구에서는 원격탐사기법으로 구축된 SRTM(The Shuttle Radar Topography Mission) DEM의 격자기반 분포형 강우-유출모형의 적용성을 분석하였다. 충주댐유역에 대하여 격자해상 도 500m의 SRTM DEM과 수치지형도로부터 구축한 TOPO DEM을 구축하였고, 모형의 적용을 위하여 Stream-burning 기법으로 전처리하였다. 두 DEM으로부터 표고, 흐름방향, 수문학적 경 사, 추출된 유역셀의 개수, 종단형상을 비교한 결과 SRTM DEM과 TOPO DEM이 매우 유사한 특성을 나타내는 것으로 분석되었다. 6개 강우사상을 대상으로 격자기반 분포형 강우-유출모델 KIMSTORM을 이용한 분석결과에서도 첨두유출과 유출용적의 상대오차 평균값이 각각 0.91%, 0.29%로 차이를 보이지 않았다. 분석결과로부터 SRTM DEM이 TOPO DEM과 같이 격자기반 강우-유출모형 적용시 만족할 수 있는 결과를 도출할 수 있는 지형자료임을 나타내었다. In this study, the applicability of SRTM(The Shuttle Radar Topography Mission) DEM(Digital Elevation Model) which is one of the remotely sensed shuttle`s radar digital elevation was tested for use as the input data in a grid-based rainfall-runoff model. The SRTM DEM and digital topographic map derived DEM(TOPO DEM) were building with 500m spatial resolution for the Chungju-Dam watershed which located in the middle east of South Korea, and stream-burning method was applied to delineate the proper flow direction for model application. Similar topographical characteristics were shown as a result of comparing elevation, flow-direction, hydrological slope, number of watershed cell, and profile between SRTM DEM and TOPO DEM. Two DEMs were tested by using a grid-based rainfall-runoff model named KIMSTORM with 6 storm events. The results also showed no significant differences in average values of relative error for both peak runoff(0.91 %) and total runoff volume(0.29 %). The results showed that the SRTM DEM has applicability like TOPO DEM for use in a grid-based rainfall-runoff modeling.
부식제에 의한 상부 소화관 손상에 대한 내시경적 연속추적검사에 관한 고찰
박충기(Choong Kee Park),김학양(Hak Yang Kim),신호균(Ho Kyun shin),정인구(In Goo Jung),전성국(Sung Gook Jun),유재영(Jae Young Yu) 대한소화기학회 1990 대한소화기학회지 Vol.22 No.2
The ingestion of caustic agents can initiate a progressive and devastating injury to the esophagus and stomach. Since the introduction of concentrated alkaline cleansers in the 1960s, the incidence of seveve injury has increased. If the patient survives the acute effects of caustic ingestion, the reparative response can result in esophageal and gastric stenosis and an increased incidence of esophageal cancer. There are little reports in the case of the strong acid was ingested, and especially no reports about the periodic gastrofiberscopic examination. We have done the periodic gastrofiberscopic examination every a week for four times to whom ingested the caustic agents. The results obtained were as follows: 1) Male to female ratio was 7:6. The mean age was 33.6 years. (range: 18 to 59) 2) Amount of acid ingested was about 30 to 100 cc. 3) The motive of ingestion was accidental in 2 patients, suicidal attempt in 11 patients, and 4 patients of whom was major depression patients. 4) Patients with ulcer had more severe and many symptoms than patients with gastritis and esophagitis. 5) Of the 13 patients, stricture developed in 5 patients, esophageal stricture in 3 patients, and gastric antral stricture in 2 patients. 6) The esophageal injury was more severe than the gastric injury, probably that is due to ingestion of highly concentrated acid. 7) In 3 patients, serial fiberoptic gastroscopy demonstrated nodular regeneration at 2 weeks after ingesting caustics, esophageal or gastric antral stricture 3 or 4 weeks later. 8) In 5 patients with stricture, 4 patients required operation. Remaining patients without stricture were treated conservatively with antacid or H2 antagonist without subsequent complication.9) None of 13 patients expired. 10) 9 patients had followed-up from 3 months to 15 months after ingestion, 8 patients of whom were free of symptoms, only 1 patient persisted anorexia and dysphagia.
정인균 ( Jung In-kyun ),홍성민 ( Hong Seong-min ),김성준 ( Kim Seong-joon ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
The purpose of this study is to extract agriculture-related information from high-resolution satellite imageries. Calendar of cropping pattern for crops detected on the image was diagrammed, and field investigation was done to check crop status, agricultural facilities and structures. As a result, high-resolution agricultural land cover map from IKONOS imageries was made out.
분포형 강우-유출모형의 하도자료 구축을 위한 하폭 및 하상경사 산정공식 개발
정인균,박종윤,조형경,이지완,김성준,Jung, In-Kyun,Park, Jong-Yoon,Joh, Hyung-Kyung,Lee, Ji-Wan,Kim, Seong-Joon 한국농공학회 2010 한국농공학회논문집 Vol.52 No.4
In this study, two estimation equations for preparing stream data for distributed storm runoff model were developed by analyzing the nonlinear relation between upstream flow-length and stream width, and between upstream flow-length and stream bed-slope. The equations for stream cell were tested in Chungjudam watershed (6,661 $km^2$) using KIMSTORM. Six storm events occurring between 2003 and 2008 were selected for the model calibration and verification before the test of equations. The average values of the Nash-Sutcliffe model efficiency (ME), the volume conservation index (VCI), the relative error of peak runoff rate (EQp), and the difference of time to peak runoff (DTp) were 0.929, 1.035, 0.037, and -0.406 hr for the calibrated four storm events and 0.956, 0.939, 0.055, and 0.729 hr for the two verified storm events respectively. The estimation equations were tested to the storm events, and compared the flood hydrograph. The test result showed that the estimation equation of stream width reduced the peak runoff and delaying the time to peak runoff, and the estimation equation of stream bed-slope showed the opposite results.
효과적인 유역자료 추출을 위한 DEM 전처리 방법의 비교
정인균 ( Jung In-kyun ),김성준 ( Kim Seong-joon ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-
Watershed boundary and stream network can be extracted from DEM(Digital Elevation Model) using GIS software such as ARC/INFO or ArcView Spatial Analyst. However, there exist many errors in the generated watershed boundary and stream network just by operating sink removal function of the present software. This paper present the error reducing method to delineate watershed boundary and generate stream network especially in plane areas by using stream burning techniques known as Fillburn and Agree bum. These preprocessing techniques of DEM dramatically decreased the errors comparing with the results by no-bum DEM.
Landsat TM 영상을 이용한 논지역 내 비닐하우스 면적 추정
정인균,박근애,장철희,김성준,Jung In-Kyun,Park Geun-Ae,Jang Cheol-Hee,Kim Seong-Joon 한국관개배수위원회 2001 한국관개배수논문집 Vol.8 No.2
A plenty of wastes by greenhouse cultivation affect soil and water pollution much more than those by rice cultivation in paddy field. The greenhouse on paddy field has been increased dramatically, however their physical information such as the location an
정인균 ( In Kyun Jung ),신창민 ( Chang Min Shin ),전지홍 ( Ji Hong Jeon ),이지완 ( Ji Wan Lee ),정광욱 ( Kwang Wook Jung ) 한국농공학회 2013 한국농공학회 학술대회초록집 Vol.2013 No.-
수질 혹은 유역모델은 자연현상을 수식화함으로써 유량 및 수질 혹은 오염물질 부하량을 예측할 수 있기 때문에 수질관리에 있어 유용하게 사용되는 수단 중 하나이다. 우리나라의 경우 수질오염총량제도가 도입되고 비점오염원의 중요성이 강조된 이후 수계 수질관리에 있어 유역 및 수질모델의 중요성이 대두되었으며 최근 들어서는 수질관리에 있어 모델의 사용빈도가 증가하고 있는 추세이다. HSPF는 현재 수질예보에 활용하고 있는 유역모델로서 수질예보의 신뢰성을 향상하기 위한 모델의 정확도 향상에 관한 연구를 국립환경과학원에서 진행중에 있다. HSPF 모델에서는 하천 및 저수지의 수리계산을 위하여 수심-수면적-용적-유출량의 관계를 정의한 Function table인 FTABLE이 사용되며, 수리모의결과는 FTABLE에 의해 크게 영향을 받는데 HSPF 모델 구축을 위해 사용되는 BASINS에서는 수치고도모델을 이용하여 FTABLE을 자동생성하기 때문에 이를 이용한 수리모의 결과는 결국 수질해석에 영향을 미치게 된다. 본 연구에서는 하천수리모의 개선을 위해 실제의 하천단면 및 하천횡단 구조물 등을 수리해석모형인 HEC-RAS로 구축하여 유량규모에 따른 단면별 수리모의를 실시하고 그 결과를 이용하여 FTABLE을 작성함으로서 실제 하천단면의 수리적 특성을 반영한 FTABLE을 작성할 수 있는 프로그램을 개발하였으며, 낙동강 지류인 금호강 구간에 대하여 적용하였다. 그 결과 모의기간전체의 유량, 수심, 수면적, 유속의 평균값은 BASINS에서 작성된 FTABLE을 적용하였을 때와 비교하여 감소하는 것으로 나타났다.
정인균 ( Jung In Kyun ),김성준 ( Kim Seong Joon ),김대식 ( Kim Dae Sik ),고광돈 ( Ko Kwang Don ),이금준 ( Lee Geum Jun ) 한국농공학회 2008 한국농공학회 학술대회초록집 Vol.2008 No.-
The flood risk and property damage has increased in rural areas due to the increased frequency and intensity of heavy rainfall event. The 3,320 agricultural reservoirs, which has been managed by KRC (Korea Rural Community & Agriculture Corporation), are distributed over the rural area. However, only a few of the agricultural reservoirs have flood control capability. Thus it is necessary to develop a flood monitoring and management system for the KRC reservoirs during the storm periods. This study suggests the conceptual idea for the development of web-based flood control and monitoring system of agricultural reservoirs which will be managed by KRC in the future.