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이관형 서울교육대학교 초등교육연구소 1999 한국초등교육 Vol.10 No.1
A Study on the Curriculum of Camp ( I ) Leer Kwan-hyung This study Is about the curriculum of camp that the students have to purchase in their second steps in camp curriculum The first chapter is about the basic thoughts, the second is about the histories of camp, the third is of the meanings and objects of camp, and the fourth is about the educational meanings of camp
초등학생의 고무줄놀이 안무활동 지도를 위한 영상 교재 구축
이관형,김명철,권선자 서울敎育大學校 初等敎育硏究所 2002 한국초등교육 Vol.13 No.2
The purpose of this study is to build elastic string play activities systematically and to provide learning-steps as follows : basic-motions, developed-motions, applied- motions and choreographic-motions. And as teaching materials, we make VCD including learning-step simulation by command and music, and CD including music. 1. We make basic-motions as we analyze a form and constituent of elastic string play. Basic-motions are as follows : Stabbing, Spinning, Hopping, Kicking, Winding, Stamping 2. As we infer from changing the direction and the movement of basic-motions, we construct developed-motions. 3. As we connect two different basic-motions and pairs them, we develop applied-motions. 4. We make our students practice above motions according to above sequence by command and afterward practice by music. 5. After students learn above motions, we let our students connect above motions with such motions as clapping, changing spot, aerobic motion and folk dance motion. 6. We make our students create and practice choreographic-motions smoothly by group studying, practicing by command, doing trial and error and completing by music.
複合積層板 構造物의 Mechanical Fastening의 破損
宋實炯 忠南大學校 産業技術硏究所 1990 산업기술연구논문집 Vol.5 No.1
A series of test was performed measuring the failure strength and failure mode of Gr/Pi, [0°/45°/90°/-45°]s laminate containing a single pin loaded hole. The finite element method is applied to calculate the stress distribution in the laminates, then the failure load and the failure mode were predicted by means of the characteristic length. 12 different geometric variations were developed to analyze the effects of the ratio of specimen width to hole diameter (W/d) and ratio of edge distance to hole diameter(L/d). X-Ray of NDE methods were utilized in finding out the initial defects, damage and the fracture mechanism, and SEM(Scanning Electron Microscopes) was used the evaluation of the fracture mechanism and crack propagation around hole under tension pin loading. [0°/45°/90°/-45°]s laminte are found to be most sensitive to W/d but not so influenced by L/d. The failure mode and tensild strength predicted by the model show agreement with experiment data for pin loading bolt jointed test except range of L/d〈3.
브레이크 디스크용 복합재료의 인장특성 및 비파괴 시험연구
송관형 충남대학교 산업기술연구소 1999 산업기술연구논문집 Vol.14 No.2
An experimental study on tensile and NDT characteristics of CFRC(carbon fiber reinforced carbon) composite laminates far brake disk at room and high temperature were tested. Tools and several grips for high temperature were designed to conduct tensile test of the mechanical properties. In order to understand the tensile property and the fracture mechanism, ultrasonic and AE(acoustic emission) of the NDT(Non-destructive test) have been conducted for the samples such as green-body, 1st and 2nd carbonization, and CFRC. These results showed that the main mechanism of attenuation was Rayleigh scattering from porosity and the change of the volume fraction porosity was associated with that attenuation slope. AE technique was used to evaluate the fracture mechanism for green body. As for felicity ratio could not be definited for 1st. carbonization.
Pseubomonas aeruginosa의 Temperature Sensitive 突然變異體의 유도와 분리
유관희,정기흥,정순정,이형환 건국대학교 1983 論文集 Vol.16 No.1
Sixty-one temperature-sensitive mutants of Pseudomonas aeruginosa have been isolated from the mutagenized culture with N-methyl-N'-nitro-Nitrosoguanidine. The mutagen was treated at 36℃ and the ts-mutants were isolated at the non-permissive temperature of 42℃ by size of colony and growth. Twenty-five mutants were smaller in the size of colonies at 42℃ than those of 36℃, and thirty-sin mutants were not growed at 42℃.
김형관,이건상,김옥경 漢陽大學校 基礎科學硏究所 1988 基礎科學論文集 Vol.7 No.-
Se를 화학당량비보다 10% 더 첨가하여 2단전기로를 사용하여 용융법에 의해 성장시킨 CuInSe₂의 결정화 여부를 x-ray diffractometer로 측정한 회절무늬와 계산된 회절무늬를 비교하여 결정하였다. 성장된 결정은 격자상수가 a=5.78Å과 c=11.59Å인 chalcopyrite 구조를 가지며 c/a=2.005로 신장 외곡을 하고 있다. Ⅵ족 원자의 위치를 결정하는 값 x는 x=0.2487이며, ??=2.5007Å, ??=2.5095Å으로 Se가 Cu쪽에 가깝게 위치하고 있다. 따라서 성장된 결정은 이온분극을 가진 것으로 해석된다. CuInSe₂ crystals are grown by directional freezing method using two-zone furnace. The crystal structure are investigated using x-ray diffractometer by powder method and compared with calculated data. The lattice constants are calculated a=5.78Å and c=11.59Å. The distance between atoms are ??=2.5007Å and ??=2.5095Å. It is found that Se atoms are positioned toward Cu atoms.
서울 대기 에어로솔의 물리적 특성 : 0.01~1.0㎛범위 에어로솔의 표면적 및 체적분포의 월변화
김형관,김필수 漢陽大學校 環境科學硏究所 1988 環境科學論文集 Vol.9 No.-
입자 크기 0.01~1.0 ㎛범위 서울 대기 aerosol의 표면적 및 체적의 월변화를 1984년 5월부터 10월에 걸쳐 전기적 aerosol분석기로 결정하였다. 그 결과 표면적 분포는 0.13 ㎛ 근처에서 극대를 가지는 一山型 곡선을 보였다. 체적분포는 0.2 ㎛ 근처에서 극대를 나타내며 직경 1.0 ㎛ 이상에서 제2의 극대가 있을 가능성을 보였다. 이러한 분포는 직경이 커질수록 입자의 개수가 점점 줄어드는 입자수 분포와는 판이하게 다른 것이었다. 표면적 및 체적분포의 월변화는 춘계에 최고의 농도분포를 보이고 하계에 최저를, 그리고 추계에 점점 증가하는 양상을 나타냈다. 이러한 계절변화는 자연환경과 기상요인의 변화와 밀접히 연관된 것이었다. Monthly variation of surface and volume distributions of Atmospheric aerosols over the size range 0.01~1.0 ㎛ has been determined using an electrical aerosol analyzer in Seoul from May through to October 1984. The results indicate that the surface distribution reveals a monomodal curve with its maximum in the vicinity of 0.13 ㎛ for each month, while the maximum of the volume distribution appears at about 0.2 ㎛ suggesting a possible existence of second maximum somewhere D>1.0 ㎛. These distributions are quite different from the aerosol number distribution which is characterized by a continous decrease of number concentration as increasing particle size. The monthly variation of the surface and volume distributions shows their highest values in spring and lowest in summer. followed by a gradual increase in autumn. The seasonal variation is closely related with change of natural environment and meteorological factors.