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D.C magnetron sputter법으로 증착된 TiAlN의 중간층에 따른 특성연구
김명호,이도재,이광민,김운섭,김민기,박범수,양국현,Kim, Myoung-Ho,Lee, Doh-Jae,Lee, Kwang-Min,Kim, Woon-Sub,Kim, Min-Ki,Park, Burm-Su,Yang, Kook-Hyun 한국재료학회 2008 한국재료학회지 Vol.18 No.10
TiAlN films were deposited on WC-5Co substrates with different buffer layers by D.C. magnetron sputtering. The films were evaluated by microstructural observations and measuring of preferred orientation, hardness value, and adhesion force. As a process variable, various buffer layers were used such as TiAlN single layer, TiAlN/TiAl, TiAlN/TiN and TiAlN/CrN. TiAlN coating layer showed columnar structures which grew up at a right angle to the substrates. The thickness of the TiAlN coating layer was about $1.8{\mu}m$, which was formed for 200 minutes at $300^{\circ}$. XRD analysis showed that the preferred orientation of TiAlN layer with TiN buffer layer was (111) and (200), and the specimens of TiAlN/TiAl, TiAlN/CrN, TiAlN single layer have preferred orientation of (111), respectively. TiAlN single layer and TiAlN/TiAl showed good adhesion properties, showing an over 80N adhesion force, while TiAlN/TiN film showed approximately 13N and the TiAlN/CrN was the worst case, in which the layer was destroyed because of high internal residual stress. The value of micro vickers hardness of the TiAlN single layer, TiAlN/TiAl and TiAlN/TiN layers were 2711, 2548 and 2461 Hv, respectively.
한국에 있어서의 학교급식개선을 위한 연구 II. 자활급식 2년간의 관찰
김명호,이원덕,김영옥,김문식,Kim, Myung-Ho,Lee, Won-Duck,Kim, Young-Ok,Kim, Moon-Shik 대한예방의학회 1976 Journal of Preventive Medicine and Public Health Vol.9 No.1
It is obvious that adequate nutrition is essential for growth and development of school children, and many elementary schools in this country have already practiced it. Therefore, it would seem apparent that the school feeding program would have a significant effect on the growth and development of school children. This paper presents a two-year experimental school-feeding program from 1973 to 1974, and attempts to evaluate its effects by before-and-after nutrition surveys conducted in two elementary schools, one experimental and the other as a control. The two schools are both located in the same county (Yongin-Kun, Kyunggi-Do), and the families of their students are presumed to share the same socio-economic level. To assess the effect of school-feeding, we measured height, weight, chest circumference and grasping power. Physical examination was done foresigns of nutritional deficiency. A stool examination for parasites and blood examinations for hemoglobin, hematocrit and serum protein were included. Analyses were done for 150 students selected randomly at the beginning of the program. These students attended the school throughout the program period. Results are as follows: 1. The amount of increase of height, weight, chest cirumference and grasping power were greater in the experimental school than in the control school, but the differences are not statistically significant. 2. Signs of vitamin deficiency decreased in both experimental and control schools during the two-year program period. 3. At the time of the 1974 post-survey, values of Hb. & Hct. revealed no significant differences between the two schools, but serum protein level was a little higher than that of general Korean rural children of the same age. 4. Infestation rate of parasites had increased in both schools during the two-year program period. 5. Each student of the two schools was classified into three major classes, according to the level of economic condition of his or her parents, namely higher, middle and lower. The results of each class of the experimental school was compared with that of the corresponding class of the control school, expecting the relative magnitude of change largest in the lower economic class of the experimental school. However, change was greatest in the middle class, still not being statistically significant. Finally, the authors concluded that the two-year period for such a program is not sufficiently long for its beneficial effects to be demonstrated and measured. As long as the growth and development of children are concerned, planning with a more distant perspective is required, as well as the development of new methods of evaluation.
김명호,Kim, Myeong-Ho 한국학교보건협회 1976 학교보건 Vol.2 No.-
교육과정이란 학교에서 이루어지는 정규 수업을 통한 교육 뿐만이 아니라 학교 생활 전체를 논하기도 한다. 교육과정은 간단없이 개정되어야 한다. 가령 의학교육에서 생각할 때 국민 의료에 가장 적합한 의사를 양성하기 위해서 혁신적인 교육을 아무리 잘 한다 해도 적합한 교육을 받은 의학생이 의사, 더욱이나 인턴과 레지덴트를 거친 후 국민 의료에 호응코자 할 떄는 벌써 국민 의료의 요구실정은 변화되어 충족을 시키기 힘들다는 것이다. 즉, 요구도는 앞질러 가고 충족도는 뒤늦게 따라 갈 수밖에 없다는 것이다. 따라서 우리 나라에서는 국민학교에서 최근 교육과정을 개정한 바 있고, 중,고등학교에서도 가까운 장래에 개정을 단행하기 위해서 작업을 서두르고 있다. 대학에 있어서는 다른 분야도 그렇겠지만 의학교육에서는 최근 교육과정을 시대적인 요청에 따라서 개정한 바 있다. 여기서는 건강교육을 중심으로 한 교육과정에 반영되어야 할 새로운 분야를 국민학교와 중고등학교 교육의 테두리 안에서 다음과 같이 생각해 보기로 한다.