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박구영(Goo-Young Park) 한국중원언어학회 2007 언어학연구 Vol.- No.11
This study consists of introductory theories on language acquisition, demonstrating the acquisition of children's first language and second language and on the acquisition of adults second language(L2). For this research, we made an experiment with college students, high school students, and foreign school students learning English as an L2. Questionnaires were given to the subjects on wh-questions, and their responses provided good data for developing analytic studies, which constitutes the fifth part of this thesis. For both L1 and L2, there have been many theories of how languages are acquired from a variety of perspectives, such as Behaviorist Learning Theory, Innateness Hypothesis, Cognitive Learning Theory, and Acculturation Theory, etc.
K-DRUM과 MODFLOW를 연계한 장기유출량 정확도 개선
허영택,박구영,박진혁,김형산 한국방재학회 2018 한국방재학회논문집 Vol.18 No.7
In this study, the K-DRUM (K-water Distribution Runoff Model), which is a distributed rainfall runoff model, and MODFLOW (a Modular Three-Dimensional Finite-Difference Ground Water Flow Model) are linked to improve the accuracy of base flow. The K-DRUM model and MODFLOW model are set to share the terrain, boundary condition, and input/output data as a grid-based model. The model linkage has shown that the PBIAS has been improved from satisfactory to very good, especially with a distinct improvement in base flow. As a result, it is possible to compensate the difficulties of spatiotemporal distribution of recharge, which is a disadvantage of groundwater flow, and can be utilized in water impact assessment through long-term runoff analysis according to future climate change scenarios. 본 연구에서는 분포형 강우유출모형인 K-DRUM (K-water Distribution Runoff Model)과 3차원 지하수 유동 모형인 MODFLOW (A Modular Three-Dimensional Finite-Difference Ground Water Flow Model)를 연계하여 장기유출분석을 위한 기저유출량의 정확도를 향상시키고자 하였다. K-DRUM모형과 MODFLOW모형은 격자기반 모형으로 지형, 경계조건 및 입출력자료를 공유하도록 설정하였으며, 모형 간 연계를 통해 PBIAS가 충분함에서 매우 좋음으로 향상되었고 특히 기저유출량이 뚜렷하게 개선되었음이 확인되었다. 결과적으로, 강우유출모형의 단점인 지하수유동과 지하수유동모형의 단점인 함양량의 시공간적 분포의 어려움을 상호 보완할 수 있었으며, 향후 기후변화 시나리오에 따른 장기유출분석을 통해 수자원 영향평가에 활용될 수 있을 것으로 사료된다.