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토양과 수위 및 차광의 차이가 창포(Acorus calamus var. angustatus)의 생육에 미치는 영향
신승훈,김민수,김윤하,Shin Seung-Hoon,Kim Min-Soo,Kim Yoon-Ha 한국조경학회 2004 韓國造景學會誌 Vol.32 No.5
This study was carried out to analyze effects of soil, water level and shading on growth of sweet flag(Acorus calamus var. angustatus). Three types of soil were used, which included sandy, silty loam and paddy loam soil. Three levels of shading were applied in the experiment: no shading, 55% shading and 75% shading. The water levels were also adjusted to three levels in the experiment. The results are summarized as follows; 1. The cultivation of sweet flag in sandy soil with low water level resulted in decreased fresh weight compared to that at planting. This result indicates that the water level should be maintained higher than the soil surface for sweet flag growth in sandy soil. 2. 5 out of 72 sweet flags died in paddy loam soil. Water saturation of soil easily reduced paddy loam soil, and root growth of sweet flags in reduced soil condition were restricted, resulting in the dead plants. 3. The growth of sweet flag in paddy loam soil was worse than those in silty loam, indicating that reduced soil conditions in paddy loam is harmful to root growth. In planting sweet flags in paddy loam, improved soil aeration in paddy loam soil is necessary for good growth of sweet flag. 4. The maintaining of high water levels is better than that of low water levels in sweet flag cultivation. During winter, soil near the water surface froze and sweet flags in frozen soil were stressed physiologically. Maintaining high water levels prevents soil from being frozen which is good for the growth of sweet flags. 5. There was not significant difference in the growth of the sweet flag between non-shading and 55% shading. It thus appears that sweet flags can grow soundly under shading rate lower than 55%.
프록시 캐쉬블록사이즈 변화에 따른 replacement 정책의 효율 비교
신승훈(Seung-Hun Shin),남동훈(Dong-Hoon Nam),박승규(Seung-Kyu Park) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.1A
인터넷 상에서의 동영상이나 음성 등에 대한 서비스가 증가함에 따라, 이러한 미디어스팀을 제공하는 서버의 부하를 줄이기 위해 프록시 서버 사용이 요구되고 있다. 하지만, 미디어스트림을 용량이 크기때문에 기존의 웹 오브젝트에 대한 캐슁 정책을 그대로 반영하기에는 무리가 따른다. 본 연구에서는 미디어스트림의 효율적인 캐슁을 위하여 다양한 replacement 정책과 캐슁 블록의 크기 변화에 따른 프록시 캐쉬의 효율성 변화를 살펴본다.
Manner Assimilation and Roles of OCP-SV in Korean
Shin Seung-Hoon(신승훈) 새한영어영문학회 2006 새한영어영문학 Vol.48 No.3
Manner Assimilation such as lateralization and nasalization is one of the most characteristic properties of Korean phonology. Among many traditional analyses, one with the Syllable Contact constraint that prevents a sequence with rising sonority from appearing over the syllable boundary convincingly accounts for the phenomena. Such an account, however, fails to explain lateralization of the In sequence with falling sonority. This paper explores patterns of manner assimilation and proposes that both [nasal] and [lateral] are under the Spontaneous Voice(SV) node, and that OCP-SV plays a crucial role in Korean phonology. Establishment of the SV node including [lateral] and [nasal] is supported by interchangeability of I and n, survival of lateral in place assimilation and nasalization of lateral in a sequence of a noncoronal stop and the lateral.
Richness of the Base and Underlying Representation in Loanword Phonology
신승훈(Shin Seung-Hoon) 새한영어영문학회 2005 새한영어영문학 Vol.47 No.1
최근 최적성이론에 의한 분석의 경향을 보면 ‘기저의 풍부성’이 최적성이론의 필수요소임에도 불구하고 분석에서 무시되거나 또는지나치게 확대 해석된 경향이 있어왔다. McCarthy(2003)의 논문에서도 지적되었듯이 ‘기저의 풍부성’은 최적성이론에 필수적인 것이며 특히 문법이 충분한 설명을 제시하지 못할 때 기저형이 설명할 수밖에 없을 것이다. 본 논문은 한국어에서 사용되어지는 영어차용어를 중심으로 이제껏 기존의 이론과 분석에서 단순히 영어의 형태를 기저로 삼았던 잘못에서 벗어나 ‘기저의 풍부성’에 바탕을 둔 새로운 기저형을 삼고 이를 토대로 음운현상을 설명하여야 한다고 주장한다. 또한 본 논문은 McCarthy의 주장에 근거하여 형태소가 실제 나타나는 여러 형태의 표면형을 바탕으로 한국어에서의 영어차용어는 이제까지 주장되어 온 바와 같이 모음이 삽입되는 것이 아니라 모음이 기저형에 이미 존재하고 있어야 한다고 주장한다.
강재 조립형 이중보강재를 가지는 좌굴방지가새의 이력특성
신승훈(Shin, Seung-Hoon),오상훈(Oh, Sang-Hoon) 대한건축학회 2016 大韓建築學會論文集 : 構造系 Vol.32 No.1
The conventional braced system is generally accepted as the lateral load resisting system for steel structures due to efficient story drift control and economic feasibility. But lateral stiffness of the structure decreases when buckling happens to the brace in compression, so that it results in unstable structure with unstable hysteresis behavior through strength deterioration. Buckling restrained brace(BRB) system, in which steel core is confined by mortar/concrete-filled tube, represents stable behavior in the post-yield range because the core"s buckling is restrained. So, seismic performance of BRB is much better than that of conventional braced system in point of energy absorption capacity, and it is applied the most in high seismicity regions as damper element. In this study, we examined a few of weaknesses of general-shaped BRB and improved them, so that suggested new shape of BRB. It is made up of two steel restraining elements with non-filled material and the steel core. The new shapes of BRB were tested according to AISC(2010) and evaluated seismic performances and hysteresis characteristics.