http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김남형,우수민 대한토목학회 2012 대한토목학회논문집 B Vol.32 No.5B
본 연구에서는 경계요소법을 이용하여 경사입사파에 따른 잠제형상변화에 의한 잠제 주변 반사율에 대해서 수치해석을 하였다. 해석기법으로는 유체와 투과성 구조물 영역을 동시에 해석할 수 있는 파압함수를 사용하였으며, 파랑의 운동은 선형소산계수와 부가질량계수를 도입하여 정식화 하였다. 기존의 경사입사파에 대한 수치해석 결과와 비교하였을 때 본 수치해석에서 얻어진 결과들은 좋은 일치를 보여 주었다. 반사율은 잠제의 폭이 넓을수록 극대값 및 극소값의 출현 간격이 좁아지고, 장주기 쪽으로 갈수록 커지는 것을 알 수 있었다. 또한, 잠제의 폭에 비해 잠제높이의 변화가 반사율 더 큰 영향을 주는 것을 알 수 있었다. 각 형상잠제의 소파특성은 경사입사각의 변화에 대한 의존도가 높은 것을 알 수 있었다. 그럼으로, 본 연구의 결과는 실제 해역에서 경사를 가지고 입사하는 파랑에 대한 보다 정확한 수치해석기법으로 이용될 것으로 판단된다. Reflection coefficients of wave due to the types of a submerged breakwater on the inclined incident wave are numerically computed by using boundary element method. The analysis method is based on the wave pressure function with the continuity in the analytical region including fluid and structures. When compared with the existing results on the inclined incident wave, the results of this study show good agreement, It is found that both maximum and minimum values of the reflection coefficient are appeared frequently, as the width of a submerged breakwater becomes wider, and the reflection coefficient increase, as the wave period is longer. In addition, the effect on the reflection coefficient due to the change of submerged breakwater hight is lager than that due to the change of submerged breakwater width. The results indicate that dissipating characteristics of wave due to the types of a submerged breakwater own high dependability regarding the change of inclined incident waves. Therefore, the results of this study is estimated to be be applied as an accurate numerical analysis referring to inclined incident waves in real sea.
고등학생들의 거주선호 mental map 에 관한 연구 - 서울을 중심으로 -
김남형 서울대학교 지리교육과 1987 地理敎育論集 Vol.18 No.1
This study analyzes high-school students' spatial conception of Seoul through mental map of preferred residential areas. This study grasps the process of mental map by analysing returned questions from 225 high-school students in Seoul, using a standardized frequency score(SFS). The process of moulding mental map was reconfirmed and described by the questions and the answers, too. The major findings of this study are summarized as follows: 1. Prefered areas are: Yeoeuido, Samsung-dong and Kaepodong. The preference and the dislike of Myoˇng-dong are all above the average. They specially dislike Chungnyangni and Kurodong. They dislike the suburbs. 2. There is little difference based on sexes between the likes and the dislike. All respondents prefer the surroundings of the River Han. The suburbs is preferred by male-students rather than female students. 3. The group of better residential environment partly prefer the place where they live, but the group worse residential environment have no connection with it. 4. In the case of higher income levels and the residents of multi-storied apartments, the preference area gets narrow. While in the case of lower income level, the preference area gets wider. The preference area becomes even wider in the highest income level. 5. They get informations of residential preference area by mass communication and by personal contact with their friends and relatives who live within the area. On the other hand they don't get informations about them by formal education, or by discussion with their family. 5. Deciding a residential preference area, students considered school groups and cultural facilities. They cannot now change their residence. But they will have social and economical ability in a few years. Therefore, these mental maps hold many suggestions as to geographical education and city renewal.
김남형 대동한문학회 (구.교남한문학회) 2012 大東漢文學 Vol.36 No.-
This paper is prepared to review the life and poems of Baekbong Lee Hang, a bureaucrat writer of 17th Century. Lee Hang born in a family of bureaucrats serving the government for 3 generations since great-grand father entered into civil service by passing the state examination at the age of 35 by focusing on studying since when he was little. He served as a secret royal inspector at Hamgyung Province as a Jungeon, Saganwon, the mayor of Buan - Leejojwarang, Yejochamui, Governor of Chungjoo until Gapsindaechulcheok. He was temporarily stripped of all positions by Gapsindaechulcheok but reappointed based on his ability as a manager and trust from King Sukjong and served as the governor of Anjoo, the mayor of Dongrae, Gwangjuyusoo, Yejochampan. The reason that Lee Hang enjoyed successes in government offices in the midst of severe political confusion during the late 17th Century was that he was good at governing as a local government officer and gained trust from King Sukjong by behaving himself carefully. The poems by Lee Hang consist of memories on glories that his family enjoyed, poems reflecting self-realization as a government officer, poems reflecting the poet's awareness yearning for a life in the nature while admiring the beauty of the nature, poems reminding of war with external enemies like Japan, China and showing the will of excluding China. Among these, the poems with interests in national defense and the will of excluding China are believed to be meaningful poems showing a side of nationalism by intellectuals of the late Chosun Dynasty. 본고는 17세기의 관료문인 白峰 李沆(1636∼1691)의 생애와 시세계를검토하기 위하여 집필된 것이다. 증조부 이래 3대에 걸쳐 출사한 관인 집안에서 태어난 이항은 어려서부터 과거에 뜻을 두고 과거 공부에 열중하여 35세 때 대과에 급제함으로써 관계에 진출하였다. 이후 庚申大黜陟이 있기까지 司諫院 正言, 함경도 암행어사, 이조좌랑, 부안현감, 예조참의, 충주목사등을 역임하였다. 庚申大黜陟으로 일시 削奪官職당하였으나, 관리로서의재능과 숙종의 신임에 힘입어 다시 등용되어 안주목사, 동래부사, 광주유수,예조참판 등을 역임하였다. 17세기 후반이라는 격심한 정치적 혼란 속에서도 이항의 宦路가 비교적 순탄했던 것은 그가 지방관으로서 治理에 밝았고신중하게 처신하여 숙종의 신임을 받았기 때문이다. 이항의 시세계는 관료로서의 자아 실현의지가 강하게 투영된 작품, 자연의 아름다움을 완상하면서 세상사에 지친 심신을 위안하고자하는 작가의식이 투영된 작품, 倭ㆍ淸 등 외적과의 전쟁을 상기하고 국방에 대한 관심과排淸의식을 드러낸 작품 등으로 나눌 수 있다. 첫째, 계열의 작품은 가문적 전통에 대한 자부심과 정치적으로 쇠락해가는 현실에 대한 각성이 그 동인으로 작용하고 있으며, 자연과의 합일이라는측면에서 일정한 한계를 드러내고 있는 둘째 계열의 작품 또한 ‘관료로서의자아실현과 의지’와 깊은 관련이 있는 것으로 판단된다. 셋째 계열의 작품은 조선 후기 지식인들이 지녔던 국가관 내지 역사관의 한 단면을 엿보게한다는 점에 의의를 부여할 수 있다.
김남형,Kim, Nam-Hyeong The Korean Society for Reproductive Medicine 1995 Clinical and Experimental Reproductive Medicine Vol.22 No.3
Microtubules and microfilaments are major cytoskeletal components in mammalian ova that provide the framework for chromosomal movement and cellular division. Extensive changes of cytoskeletal organization occur during maturation and fertilization. The changes in cytoskeletons are essential for the normal meiotic maturation and for the formation of the biparental diploid genome of the embryo, and thus are repeated at each cell cycle during embryonic development. Disturbance of the cytoskeletal organization could result in abnormal gamete development and early embryonic death.
On the Sediment Transport Characteristics of the Bottom Turbulent Boundary Layer
김남형,키요시 타키카와,Kim, Nam Hyeong,Kiyoshi, Takikawa Korean Society of Civil Engeneers 1993 대한토목학회논문집 Vol.13 No.2
본 논문에서는 유한요소법을 2차원 난류경계층에 적용하였으며, 점성유체의 시간의존 비압축성 운동을 시간과 압력장(場)에서 Navier-Stokes방정식과 vorticity방정식을 이용하여 정식 화하였다. 수치계산방법은 Galerkin방법에 기초하였으며, 난류 경계층의 eddy kinematic viscosity에 대해서는 Prandtl의 혼합거리이론을 도입하였다. 난류 경계층에서 파동에 의한 임의 저면에서 저질의 이동을 수치계산하였다. 유한 요소법에 의해 얻어진 결과는 진동흐름에 의한 경계층과 파동에 의한 경계층에서의 특성의 차이를 분명히 하였다. A finite element method(FEM) is presented and applied to the two-dimensional bottom turbulent boundary layer. The time-dependent incompressible motion of a viscous fluid is formulated by using the well-known Navier-Stokes equations and vorticity equation in terms of the velocity and pressure fields. The general numerical formulation is based on Galerkin method and solved by introducing the mixing length theory of Prandtl for eddy kinematic viscosity of a turbulent flow field. Numerical computations of the transport of sediment on an arbitrary sea-bed due to wave motion in the turbulent boundary layer are carried out. The results obtained by the FEM made clear the difference in characteristic features between the boundary layer due to oscillatory flow and the boundary layer due to wave motion.