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최중대,최예환,Choi Joong-Dae,Choi Ye-Hwan 한국관개배수위원회 2002 한국관개배수논문집 Vol.9 No.2
Return flow rate of agricultural irrigation for rice culture was investigated in the North Han river basin, Two small paddy watersheds were chosen and irrigation, drainage, infiltration and evapotranspiration were monitored and estimated during the irriga
최중대,최예환,이찬만,Choi Joong-dae,Choi Ye-hwan,Lee Chan-man 한국관개배수위원회 1997 한국관개배수논문집 Vol.4 No.2
Flow rate and selected water quality of 2 small rural streams located in Kangwon-do, Korea, were monitored and land use of the watersheds was investigated to describe the trend of stream water quality for 2 years. Water qualities were analyzed with respec
최예환 ( Choi Ye Hwan ),최중대 ( Choi Joong Dai ),김기성 ( Kim Ki Sung ) 한국농공학회 2001 한국농공학회 학술대회초록집 Vol.2001 No.-
It is suggested that what kinds of key points are in order to decrease that calamities has suffered by typhoons that attacks annually from July to October in Korean peninsula. In considering to influence directly or indirectly huge calamities for Korea during 10 years with from 1991 to 2000, it is recorded that attacking times are 37.2% in August among total times, 28.7% in July and 25.5% in September respectively. Especially the number of victims of lives and amount of calamities of properties are marked annually mean 142 persons and 6,111 x 10<sup>10</sup> won from 1990 to 1999, and similar to only 49 persons and 6,454 x 10<sup>10</sup> won in 2000. There are aims that are researched how to decrease number of victims and calamities of properties by flood and typhoon in this study.
초지(草地)의 지표면(地表面) 흐름을 추적하기 위한 Kinematic Wave Modeldml 개발(開發)(I)-이론(理論) Model의 개발(開發)-
최중대 ( Choi Joong Dae ),( W. L. Magette ),최례환 ( Chou Ye Hwan ),류능환 ( Ryu Neung Hwan ) 한국농공학회 1993 韓國農工學會誌 : 전원과 자원 Vol.35 No.2
A modified kinematic wave model of the overland flow in vegetated filter strips was develop-ped. The model can predict both flow depth and hydraulic radius of the flow. Existing models can predict only mean flow depth. By using the hydraulic radius, erosion, deposition and flow’s tansport capacity can be more rationally computed. Spacing hydraulic radius was used to compute flow`s hydraulic radius. Numerical solution of the model was accomplished by using both a second-order nonlinear scheme and a linear solution scheme. The nonlinear portion of the model ensures convergence and linear portion of the model provides rapid computations. This second-order nonlinear scheme minimizes numerical computation errors that may be caused by linearization of a nonlinear model. This model can also be applied to golf courses parks, no-till fields to route runoff and production and attenuation of many nonpoint source pollutants.