論杜詩五古長篇之結構

宋政憲 개신어문학회 1981 개신어문연구 Vol.1 No.-

연단위 관개효율 변화를 고려한 관개지구 용수 공급량 모의

송정헌,송인홍,김진택,강문성,Song, Jung Hun,Song, Inhong,Kim, Jin Taek,Kang, Moon Seong 한국수자원학회 2015 한국수자원학회논문집 Vol.48 No.6

본 연구에서는 관개효율의 연별 변화와 필요수량을 고려하여 추정된 관개지구 용수 공급량이 현장에서 실제 공급되는 수량을 잘 모의하는지를 평가하였다. 대상지구로 이동저수지 지구를 선정하여, 2001~2009년 기간에 대한 실측 공급량 자료를 구축하였다. 관개효율, 물꼬높이, 침투량 등 총6개의 매개변수에 대해 민감도 분석, 보정 및 검정을 수행하였다. 민감도 분석결과, 관개효율이 가장 민감한 매개변수로 나타났다. 관개효율은 가장 민감하게 나타난 점과 연마다 값이 달라지는 특징을 반영하여 연별로 보정하였다. 통계적 지표 산정 결과 월단위에 대한 PBIAS, NSE, 그리고 RSR은 보정기간 동안 각각 2.7%, 0.93, 0.26로, 검정기간 동안 각각 3.9%, 0.89, 0.32로 매우 우수하게 나타났다. 따라서 비록 농업용수 공급량은 인위적 요소이나, 적절한 매개변수 값을 사용하여 모의한다면 모의치가 실측치와 유사하게 모의될 수 있을 것이다. 하지만 대상지구의 실측 자료가 확보되지 않아 보정되지 않은 매개변수를 사용하는 경우 결과가 매우 안 좋을 수 있을 가능성이 나타났다. 따라서 농업용수 공급량의 모의 시 적절한 매개변수의 선정은 매우 중요할 것으로 사료되며, 특히 관개효율은 연별로 보정하는 것을 제안한다. The objective of this study was to evaluate simulation of agricultural water supply considering yearly variation of irrigation efficiency. The water supply data of the Idong reservoir from 2001 through 2009 was collected and used for this study. Total 6 parameters including irrigation efficiency (Es), drainage outlet height, and infiltration, were used for sensitivity analysis, calibration, and validation. Among the parameters, the Es appeared to be the most sensitivity parameter. The Es was calibrated on a yearly basis considering sensitivity and time-varying characteristic, while other parameters were set to fixed values. The statistics of percent bias (PBLAS), Nash-Sutcliffe efficiency (NSE), and root means square error to the standard deviation of measured data (RSR) for a monthly step were 2.7%, 0.93, and 0.26 for the calibration, and 3.9%, 0.89, and 0.32 for the validation, correspondently. The results showed a good agreement with the observations. This implies that the modeling only with appropriate parameter values, apart from modeling approaches, can simulate the real supply operation reasonably well. However, the simulations with uncalibrated parameters from previous studies produced poor results. Thus, it is important to use calibrated values, and especially, we suggest the Es's yearly calibration for simulating agricultural water supply.

복합영농 관개지구의 배수량 모의 모형의 개발

송정헌,강문성,송인홍,황순호,박지훈,안지현,Song, Jung-Hun,Kang, Moon-Seong,Song, Inhong,Hwang, Soon-Ho,Park, Jihoon,Ahn, Ji-Hyun 한국농공학회 2013 한국농공학회논문집 Vol.55 No.3

The objectives of this study were to develop a hydrologic simulation model to estimate surface drainage for irrigation districts consisting of paddy and protected cultivation, and to evaluate the applicability of the developed model. The model consists of three sub-models; agricultural supply, paddy block drainage, and protected cultivation runoff. The model simulates daily total drainage as the sum of paddy field drainage, irrigation canal drainage, and protected cultivation runoff at the outlets of the irrigation districts. The agricultural supply sub-model was formulated considering crop water requirement for growing seasons and agricultural water management loss. Agricultural supply was calculated for use as input data for the paddy block sub-model. The paddy block drainage sub-model simulates paddy field drainage based on water balance, and irrigation canal drainage as a fraction of agricultural supply. Protected cultivation runoff is calculated based on NRCS (Natural Resources Conservation Service) curve number method. The Idong reservoir irrigation district was selected for surface drainage monitoring and model verification. The parameters of model were calibrated using a trial and error technique, and validated with the measured data from the study site. The model can be a useful tool to estimate surface drainage for irrigated districts consisting of paddy and protected cultivation.

李崇仁 詩文 硏浣

宋政憲 개신어문학회 2003 개신어문연구 Vol.20 No.-

陶淵明 詩文과 高麗 隱逸詩

宋政憲 충북대학교 교육생활연구소 2000 한국교육논총 Vol.- No.4

수산물도매시장에 있어서 시장도매인 제도 도입의 평가

송정헌,강종호 한국수산경영학회 2022 수산경영론집 Vol.53 No.4

도매법인 상장경매제도의 문제점를 개선하기 위하여 시장도매인 제도의 도입이 여러 측면에서 검토되고 있다. 시장도매인제는 개설자로부터 지정을 받고 농수산물을 매수 또는 위탁받아 도매하거나 매매를 중개하는 법인으로 유통단계와 유통비용을 절감한다는 장점이 있다. 특히 소비지 도매법인의 수집능력 저조로 인해 그동안 논란이 되었던 기록상장이나 형식경매 등 부정경매 문제를 해소하고 거래단계를 줄이는 등 향후 수산물 유통에 큰 변화로 받아들이고 있다. 본 연구의 목적은 도매법인 상장경매제도의 문제점 개선을 위해 도입된 시장도매인제를 수산물을 취급하는 시장도매인의 사례조사를 통해 그 제도를 평가하는 데 있다.

저수지 관개지구의 농업용수 회귀 특성 분석

송정헌,송인홍,김진택,강문성,Song, Jung Hun,Song, Inhong,Kim, Jin-Taek,Kang, Moon Seong 한국농공학회 2015 한국농공학회논문집 Vol.57 No.1

The objective of this study was to investigate characteristics of irrigation return flow from paddy block in a reservoir irrigated district during growing seasons. The irrigation return flow was divided into three parts, quick return flow from irrigation canal (RFI), quick return flow from drainage canal (RFD), and delayed return flow (DRF). The RFI was calculated from water level and stage-discharge relationships at the ends of the irrigation canals. The DRF was estimated using measured infiltration amount from paddy fields of the irrigated district. A combined monitoring and modeling method was used to estimate the RFD by subtracting surface runoff from surface drainage. The paddy block irrigated from the Idong reservoir was selected to study the irrigation return flow components. The results showed that daily agricultural water supply (AWS), the RFI, and the RFD were $27.4mm\;day^{-1}$, $4.9mm\;day^{-1}$, and $19.8mm\;day^{-1}$, respectively in May, which were greater than other months (p<0.05). The return flow ratio of the RFI and the RFD were the greatest in July (34.6%) and May (72.3%), respectively. The daily AWS was closely correlated with the RFD (correlation coefficients of 0.76~0.86) in except for July with, while correlation coefficient with the RFI were 0.56 and 0.42 in June and July, respectively (p<0.01). The total irrigation return flow was 1,965 mm in 2011, and 1,588 mm in 2012, resulting in total return flow ratio of 84.6% and 79.1%, respectively. This results indicate that substantial amounts of agricultural water were returned to streams as irrigation return flow. Thus, irrigation return flow should be fully considered into the agricultural water resources planning in Korea.

古詩歌의 烈思想에 대한 연구

송정헌 忠北大學校 1979 論文集 Vol.18 No.-

COMFARM을 이용한 농업용저수지 유역 수문 모델링

송정헌,박지훈,김계웅,류정훈,전상민,김진택,장태일,송인홍,강문성,Song, Jung-Hun,Park, Jihoon,Kim, Kyeung,Ryu, Jeong Hoon,Jun, Sang Min,Kim, Jin-Taek,Jang, Taeil,Song, Inhong,Kang, Moon Seong 한국농공학회 2016 한국농공학회논문집 Vol.58 No.3

The component-based modeling framework for agricultural water-resources management (COMFARM) is a user-friendly, highly interoperable, lightweight modeling framework that supports the development of watershed-specific domain components. The objective of this study was to evaluate the suitability of the COMFARM for the design and creation of a component-based modeling system of agricultural reservoir watersheds. A case study that focused on a particular modeling system was conducted on a watershed that includes the Daehwa and Dangwol serial irrigation reservoirs. The hydrologic modeling system for the study area was constructed with linkable components, including the modified Tank, an agricultural water supply and drainage model, and a reservoir water balance model. The model parameters were each calibrated for two years, based on observed reservoir water levels. The simulated results were in good agreement with the observed data. In addition, the applicability of the COMFARM was evaluated for regions where reservoir outflows, including not only spillway release but also return flow by irrigation water supply, substantially affect the downstream river discharge. The COMFARM could help to develop effective water-management measures by allowing the construction of a modeling system and evaluation of multiple operational scenarios customized for a specific watershed.

治隱詩文의 隱士的 屬性에 대한 硏究

宋政憲 개신어문학회 1982 개신어문연구 Vol.2 No.-