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문정학,손인호,김영국,채건식 경남대학교 환경문제연구소 1993 환경연구 Vol.15 No.-
The electrochemical property in H_(g)-(x)_Cd_(x)Te(x= 0.198) by anodic oxcidation have been studied in the standard aqueous solutions(pH=6, 9, 12) of ethylene glycol(90%) and H₂O-KOH(10%). At range of potential -0.1V ~ + 1.2V, 3 oxcidation peaks appeared. The rich residue Hg of HCT surface was related to oxcidation process of depleting Hg²+ ion in aqueous solution. Most of oxcidation materials were considered TeO₃ HTeO₃ HHgO₂, HTeO₂, TeO₂ and very little of Cd(OH)₂. The higher PH degree, the faster oxcidation process.
삼각측량 시스템을 이용한 물체의 3-D 정보추출 관한 연구
이호영,김국세,문정환,이철승,방극인,박영옥 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.2
The 3-D shape use to effect of movie, animation, industrial design, medical treatment service, education, engineering etc... But it is not easy to make 3-D shape from the information of 2-D image. There are two methods in restoring 3-D video image through 2-D image; First the method of using a laser; Second, the method of acquiring 3-D image through stereo vision. Instead of doing two methods with many difficulties, I study the method of simple 3-D image in this research paper. We present here a simple and efficient method, called direct calibration, which does not require any equations at all. The direct calibration procedure builds a lookup table(LUT) linking image and 3-D coordinates by a real 3-D triangulation system. The LUT is built by measuring the image coordinates of a grid of known 3-D points, and recording both image and world coordinates for each point; the depth values of all other visible points are obtained by interpolation.
5가 이온주입에 의해 형성된 ?? 층의 불순물 활성화 연구
문영희,이동건,배인호,김말문,한병국 嶺南大學校 基礎科學硏究所 1995 基礎科學硏究 Vol.15 No.-
Ion implantation was used to form shallow ?? junction in silicon substrate, Czochralski-grown(100) silicon wafers, 5~9 Ω㎝ p-type, were implanted with arsenic and phosphorous at room temperature. Arsenic and phosphorus depth profiles were measured by secondary ion mass spectroscopy(SIMS). Atomic distribution of arsenic and phosphorus in samples could be analysised by comparison of the SIMS prlfiles with computer simulations using the SUPREM Ⅳ program. Peak position of the arsenic profile are about 440 A in depth at 60 keV. And that of the phosphorus profile is about 1100 A in depth at 85 keV. We have measured the behavior of electrical properties - (SRP)Spread sheet resistivity, Hall mobility. sheet resistivity and Sheet carrier concentration - vs annealing temperature as well as lattice recovery of As? and p? implanted silicon samples. In the cases of arsenic and phosphorus implanted samples, increasing of Hall mobility at 500 ~ 700 ℃ annealing temperature was shown recrystallization process of implanted layer.
TSIC 방법으로 SiO₂층 내의 Ion에 따른 Two-Dim. Computer Simulation
손영호,한병국,김말문 嶺南大學校 基礎科學硏究所 1990 基礎科學硏究 Vol.10 No.-
Electrical Characteristics of current transport mechanism of mobile ions in MOS structure with SiO₂layer was two-dimensional computer simulation in general-order kinetics as well as first and second-order kinetics by TSIC method. We obtained the parameters (E,S) as a function of kinetics order(L), constant heating rate(B), initial concentration(no), half temperature(T?), and maximum temperature(T?) by the computer simulation. As the result, computer simulation revealed that kinetics order, form of TSIC curve and maximum temperature affect E and S largely.
정보화시대의 공동체 : 정보화의 진전과 기업·소비자 관계 변화를 중심으로
이대식,김성국,김영삼,신종국,임정덕,조영복,조정문 釜山大學校 商科大學 2000 釜山商大論集 Vol.71 No.-
In this study, we questioned about the possibility of the formation of the new community like relationship at the market on the contrary to the traditional market relationship. We conjectured that kind of new community like relationship may possibly arise because of wide spread of new information technology at market behavior of both consumer and producer side. Traditional buyer-seller relationship was characterized as an anonymous one-shot relationship, however, recent changes were mainly emphasized the rich mutual interactions from both sides. Producers needs more consumer side informations as well as consumers begin to participate on production side at more organized level. Some theoretical studies predict that more rich social relationship will appear at the market since the adoption and wide spread of new information technology. We assume that main functions and ingredients of the community are first, the coordination mechanism which reduces conflicts among community members and second, functional efficiency which meets the common needs of community and third, communicational rationality which enhances the integrity of community members. We surveyed about 100 small and medium sized firms located at Pusan and Kyung-Nam area in order to find out whether firms have community like relationship with their consumers. We fine that most of firms realize the impotance of consumer networks, however most of firms consider this kind of network as a marketing strategy and a source of product design instead of more community oriented characteristics like mutual trust building and social interactions.
중학교 과학 교과서 분별 증류 실험의 비교 분석 및 개선
柳五鉉,崔文永,宋周眩,권정근,白盛惠,朴國泰 한국교원대학교 과학교육연구소 2001 청람과학교육연구논총 Vol.11 No.1
이 연구의 목적은 제 6차 교육과정에 의한 중학교 1학년 과학 교과서 분별 증류 실험의 문제점을 파악하고, 중학생들이 분별 증류 실험을 능률적으로 수행할 수 있는 실험 방법을 제시하고자 하는 것이다. 이를 위한 첫 번째 단계로서 현재 사용되고 있는 8종의 과학 교과서를 분별 증류 실험 장치와 액체 혼합물의 종류에 따라 6가지로 분류하였다. 두 번째 단계로서 액체 혼합물을 가열 방법에 따라 직접가열과 물 중탕 가열로 나누어 교과서 실험과정에 따라 같은 실험을 세 번 실시하였다. 세 번째 단계로서 실험 결과의 문제점을 해결하기 위한 대안 실험을 실시하였다. 대안 실험에서는 알코을 램프로 직접가열 하는 방법과 기름 중탕으로 가열하는 방법, 그리고 가열 맨틀을 사용하여 가열하는 방법을 사용하였다. 연구결과, 가지 달린 둥근 플라스크를 직접 가열하는 실험 결과가 가지 달린 시험관을 물 중탕으로 가열하는 실험 결과보다 이론적인 결과에 근접하였다. 그리고 가지 달린 둥근 플라스크를 직접 가열하는 실험에서 플라스크 윗 부분을 보온해 주는 실험이 보온하지 않은 실험보다 실험 결과가 더 나았다. 대안 실험에서는 액체 혼합물의 증류 온도 증가를 보면서 가열 맨틀의 가열 온도를 을려 준 실험의 결과가 이론적인 결과에 가장 가까웠다. 이러한 연구 결과로부터 가지 달린 시험관을 물 중탕으로 가열하는 분별 증류 실험 장치는 탐구실험 수업에 부적절한 것이므로 개선이 요구되며, 중학교 과학실 여건을 고려할 때, 액체 혼합물의 증류 온도 증가를 보면서 가열 맨틀의 가열 온도를 변화시키는 분별 증류 실험이 가장 능률적인 방법임을 알 수 있었다. The purpose of this study was to find out the problems on the fractional distillation experiments in the middle school science textbooks based on the 6th curriculum and to suggest an efficient experiment method for the middle school students. The first step was the classification of the experiments in 8 science textbooks according to heating apparatus and liquid mixtures. The second step was doing each experiment 3 times followed by the experimental process in the textbooks. The third step was developing the alternative experiments for solving the problems found in the second step. The heating method used in the alternative experiments were direct heating, oil bath, and heating mantle. The results of the second step showed that the direct heating experiment of branched round flask was more close to the theoretical prediction than the experiment of water bath heating of branched test tube. Also the direct heating experiment of thermally insulated branched round flask was better than the result of the experiment which was not insulated. The results of the third step showed that the experiment using heating mantle regulated heating power by observing the temperature of distillate gave the closest result to the theoretical prediction. From the above results, it is concluded that the experiment using branched test-tube with water bath heating is not adequate for the fractional distillation and an alternative experiment using insulated branched round flask with heating mantle regulated heating power during experiment is recommended.
손동욱,이찬우,정영국,조래정,이혜경,김은실,이진수,정문현 대한감염학회 2007 감염과 화학요법 Vol.39 No.6
Meningococcal infection is a life threatening disease that leaves serious sequelae in spite of appropriate treatment, thus vaccination for high risk groups are Important for the prevention of meningococcal diseases. However, the vaccine for Neisseria meningitidis has not been available in Korea until we introduced bivalent (serogroup A and C) polysaccharide vaccine for the first time for relief works in our university hospital. The vaccine was administered from January 2005 to March 2007 to 317 persons. of the groups administered, the largest group among them were 133 (133/317, 42%) students who planned to study abroad and needed the vaccination for secure entrance to school dormitories. This group was followed by health care workers, travellers to the regions of the world with high risks of meningococcal diseases, and splenectomised patients. To ratioalize the domestic use of meningococcal vaccine, the availability of vaccines first needs to be simplified by introducing them to the domestic market; for this to be possible, the approval system for vaccines should be reformed and epidemiogical studies need to be carried out.