• Water for future
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• v.22 no.1
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• pp.109-116
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• 1989

An attempt is made to describe the theory an computer algorithm of the SSARR model, and to try it's application to the small satershed, by using the estimation of the model parameters with the data of Bochong stream basin. The selected period of the hydrological data is from 1982 to 1988 for the modeling. The selected basin is the Bochong stream basin which is one of the tributaries of Geum river. The estimation of model parameters and sensitivity test are carried out for the analysis of the characteristics of model parameters.

• Journal of Chest Surgery
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• v.40 no.3 s.272
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• pp.236-239
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• 2007

During dissection of the saphenofemoral junction, anatomical variations in the tributaries of the long saphenous vein and external pudendal artery are frequently encountered, but the transpositions of the femoral artery and vein have very rarely been reported. On operation of the varicose vein, the surgical complications can be minimized when the possible deviations in the normal anatomy are taken into the consideration.

• Water for future
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• v.22 no.3
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• pp.307-313
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• 1989

This study is aimed to develop a long-term daily runoff simulation model. The model is theoretically constructed and is applied to the practical problems to verify its reasonableness. A lumped, nonlinear model is proposed and is calibrated as quasilinearization procedures. The hydrological data used in the paper are precipitation, runoff, and evaporation records in the Bochong Stream which is one of the tributaries of the Geum River.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.1026-1030
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• 2010

The Geum river being used as drinking water sources has contaminated due to inflow of inadequately treated wastewater from the tributaries into the river. The characteristics of water quality in the upper regions showed good grade(BOD<3mg/L) in the Geum river, the Mankyung river and the Dongjin river, while that in the lower regions and the upper region of the Sapkyo river did not achieve the good grade. This resulted in the inflow of domestic, industrial and livestock wastewater not adequately treated by wastewater treatment systems. For lakes, the mouth of the kyungchun lake, the Sapkyo lake and the Yedane lake showed the eutrophication phenaminon with higher COD concentration. In particular, total phosphorus and chlorophyll-a concentration were higher in the Sapkyo lake than other lake.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.186-188
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• 2015

본 연구에서는 Matlab GUI언어로 개발한 수질관리모형(water quality model)을 소개한다. Matlab GUI언어는 사용자 편의에 중점을 둔 프로그램으로 다양한 계산용 함수의 포함 및 데이터의 입출력이 쉽고 조작이 용이하다. 본 모형은 기존의 복잡한 수질관리모형을 단순화 및 간소화하여 비전문가들 또한 사용이 가능하도록 데이터의 입력 과정과 변수 지정이 쉽도록 제작하였으며 서울특별시 수질오염총량관리 단위유역 내 한강수계에 적용하여 분석하였다. 이는 기존의 사용법이 어려운 수질관리모형의 한계를 깨고 사용가능 계층의 확대 및 예측 모형의 단순화에 새로운 패러다임을 제시할 것으로 기대된다.

• Proceedings of the KSRS Conference
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• 2002.10a
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• pp.454-459
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• 2002

We have developed a new method to visualize river networks in tropical rain forests from JERS-1 SAR images. This method compresses river information in an original SAR image to a small image displaying wide rivers as dark objects in real size and narrower rivers as bright objects showing brightness level as an indicator of the discharge. We applied this method to 476 images of Amazon forests, 13 observations for path 415 data and 11 observations for path 416 data between 1993 and 1997. We confirmed that a change observed in a preliminary experiment was certainly a part of seasonal changes. The changes roughly correspond to the monthly precipitation changes. Through a simple digital analysis although qualitative, we also detected subtle but consistent regional differences among minor tributaries that belong to a major tributary basin.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1998.06a
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• pp.12-16
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• 1998

최적 위치별 퇴적토에 대한 토양 특성 및 수목 식재용 유기토양 활용 가능성을 알아보고 각 시료의 수분, 유기물 함량 등에 따른 적절한 혼합을 통하여 식물 발아 성장의 최적화를 온실에서의 식물재배 실험을 통하여 달성하고자 한다. 또한 식재용 토양 활용 가능성을 알아보기 위한 기본 물성 및 유해성 평가를 하여 중금속이 식물 성장에 어떤 영향을 미치는가를 고려하여 재활용 여부를 알아보았다. 퇴적토를 이용한 식물의 발아 및 생장 실험은 원퇴적토와 모래와의 혼합비를 달리하고 다른 불순물이 함유되지 않도록 하여 발아일수와 발아적온, 생육적온 등 최적 조건을 팬지와 금잔화에 대하여 실험하였다.

• The Korean Journal of Zoology
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• v.19 no.4
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• pp.171-178
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• 1976

A new species of Cobitid fish, Cobitis longicorpus is described, based upon many specimens from several tributaries of the Seomjin River situated in the south western part in Korea. Cobitis longicorpus was previously reported as the crossband type of C. taenia by all ichthyologists in Korea. This is distributed in the Seomjin River and characterized by the distinctive cross-band color pattern, the black spots at the back of its opercula, and the structure of lamina circularis in male.

• Anatomy and Cell Biology
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• v.51 no.4
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• pp.309-311
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• 2018

In this report, four unusual communications between external and internal iliac veins of the left side have been presented. The lowest communication was the narrowest measuring about 2 mm in diameter, the second measured 6 mm, the third had a diameter of 7 mm and the last communication measured 5 mm in breadth. The upper three communications were twisted in a helical manner. The internal iliac vein had its normal tributaries except that the iliolumbar vein drained into the external iliac vein at the level of the third communication. The external iliac vein was slightly dilated just below the level of lowest communication.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.362-362
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• 2020

Flash flood is a dangerous weather phenomenon, affecting humans and the economy. The identification, forecast of the changing trend and its characteristics are increasingly concerned. In the world, there have many methods for determining the characteristics of flash floods, in which flash flood guidance (FFG) is a fast, effective and widely used method. The main source of flash floods is short-term rainfall. In this study, we used the data of cross-sectional measurement at the tributaries and the hourly rain data from the automatic rainfall measurement stations in the Geum river basin. Besides, we use a combination of the flash flood guidance and the best fit distribution function to estimate the repeatability of flash floods for head-water catchments in Geum river basin. In which, FFG determines the threshold of rainfall for flash floods. The study has determined the best hourly rainfall distribution function for the Geum river basin and estimated the maximum rainfall of 1hr according to the return periods.