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김용진,김경재,박재복,이지현,안기성,강민모,최석문,황기석 대한내과학회 1993 대한내과학회지 Vol.45 No.4
A 60-year-old man was admitted to our hospital complaining of fever with chillness and anarexia for 12 weeks. Physical examination revealed supraclavicular lymphadenopathy and left inguinal lymphadenopathy. Abdominal CT scan showed the evidence of maked lymphadenopathy on retraperitoneal, external iliac, obturator, left inguinal, and celiac lymph nodes. A pathologic diagnosis of Ki-1(+) lymphoma was made by the biopsed supraclavicular lymph node because the node consisted of large cells with pleomorphic nuclei, scanty cytoplasm, large basophilic nucleoli, atypical vacuoli and large cells were positive for leukocyte common antigen, Ber-H2, marker, and B-cell marker.
복경수,이석희,유재수,조기형 충북대학교 컴퓨터 정보통신 연구소 2000 컴퓨터정보통신연구 Vol.8 No.1
고차원 색인 구조를 위한 기존의 벌크 로딩 알고리즘은 색인 구성 시간과 검색 성능 모두를 향상시키지 못하는 문제점을 갖는다. 이 논문은 이와 같은 문제점을 해결한 대량의 고차원 데이터에 대한 색인 구조를 위한 새로운 벌크 로딩 알고리즘을 제안한다. 제안하는 알고리즘은 색인을 구성하는 시간을 단축시키기 위해 전체 데이터 집합을 정렬하는 것이 아니라 데이터의 특성을 파악하여 피벗값에 따라 분할하는 기법을 이용한다. 또한 검색 성능을 향상 시키기 위해 데이터들의 분포 특성에 따라 분할 위치를 선택한다. 제안하는 알고리즘에 대한 우수성을 입증하기 위해 실험을 통해 기존에 제안된 알고리즘과 색인 구성 시간 및 검색 성능을 비교한다. Existing bulk loading algorithms for high-dimensional index structures suffer from improving both index construction time and retrieval performance. In this paper, we propose an efficient bulk loading algorithm to construct high dimensional index structures for large data set that overcomes the problem. Although several bulk loading algorithms have been proposed for this purpose, none of them improve both construction time and search performance. To improve the construction time, we don't sort whole data set and use bisection algorithm that divides the whole data set or a subset into two partitions according to the specific pivot value. Also, we improve the search performance by selecting split positions according to the distribution properties of the data set. In order to show superiority of the proposed algorithm, we compare it with existing algorithms in terms of search time and construction time through experiments.
미세 가공된 정전용량형 초음파 탐촉자의 막 운동 모델링 및 분석
김기복,안봉영,박해원,김영주,김국진,이승석 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1
In this study, theoretical analysis and finite element analysis of the behavior of membrane (such as resonance frequency, membrane deflection, collapse deflection and collapse voltage)in thc capacitive micromachined ultrasonic transducer (cMUT) were performed. The design parameters of the cMUT were estimated and are the dimension and thickness of membrane, thickness of sacrificial layer, thickness and size of electrode, size of active element and so on. The resonance frequency of the membrane increased as the thickness of the membrane increased but decreased as the diameter of the membrane increased. The deflection of the membrane increased as d-c bias voltage increased. The collapse voltage of the membrane was predicted.
사회과 학습진단 조직과 집단 커뮤니케이션에 관한 연구 : 소집단 상호작용 패턴을 중심으로 focusing on the Small Gruop Communication Network
이기복 부산교육대학교 초등교육연구소 1997 초등교육연구 Vol.10 No.-
According to traditional approach to acquisition of Social Studies knowledge. The Social Studies Educator's teaching-learning method was the craming or memorizing system of Social Studies knowledge. but that is undesirable, therefore. This study aimed to approach the effective teaching-learning method in Social Studies. The result of this study. The effective teaching-learning method is group investigation method of cooperative learning in Social Studies and The best pattern of the communication network in group learning is the All-Channel or Circle pattern in Social Studies instruction design. This study is a helpable to Social Studies educators to get the reperception of the Social Studies instruction design but the Social Studies educators must seriously consider the change of environment of class-room for practical use of this method and pattern of the communication network in Social Studies.
解析的 標定에 있어서 標定因子의 組合에 의한 座標轉換에 關한 硏究
柳福模,趙連基,田英善 연세대학교 산업기술연구소 1980 논문집 Vol.12 No.1
This paper contains coordinate transformations in analytical orientation, which is importnat in aerial photogrammetry. To solve the analytical coordinate transformation, the least square method can be used, starting with the establishment of the relationship between control points coordinates of which are known in two different coordinate systems. In the process of coordinate transformations, the uniformity of precision and saving in computing time of certain value should be aimed. This study suggests particularly the effect of transformed coordinates as using different orientation elements in relative orientation.
Racket 運動時의 反應時間과 運動速度 改善을 爲한 Simulator 「SQT」에 關한 硏究
허복,蔡鴻遠,李來華,李敏炯,金基學,鄭相澤,朴宇奎 慶北大學校 體育科學硏究所 1986 체육과학연구지 Vol.2 No.-
The main purpose of this study was to improve greatly the most important reaction time(RT) and speed of movement (SM) at racket exercise by making program for simulator super quality training (S.Q.T) and applying it. The subjects employed were 25 male athletes composed of soccer players 8, volleyball players 7, shooting players 2, soft-tennis players 2, gymnastics player 1, and rugby football player 1 at the Kyungpook National University. We devided each sport player half and half by means of their pre-testing reaction time, and the subjects were devieded into experimental and control group. Experimental group was drilled by using light stimulus simulator training method and control group was drilled by using sound stimulus simulator training method. The training was practiced 20∼30 minutes a day regularly and 5 times a week for 5 weeks. Two groups practiced concentrically experimental learning by using light and sound simulator equipment by S.Q.T. program under equal condition. The propriety on the training effect was investigated by longitudinal analysis of results tested before and after experiment. As the result of the experiment, superiority and inferiority of two groups was evaluated by trying crosssectional analysis. The results obtained were summarized as follows: 1. Reaction time Experimental group; The performance of this group was greatly improved after experiment. Control group; The performance of this group was greatly improved after experiment. Comparison of two groups; Leftward simple completion time showed a significant difference (p<.01), but the other elements did not showed it. As a whole, experimental group was superior to control group, but statistics showed little difference between the two groups. 2. Speed of movement Experimental group; The performance of all elements were improved after experiment(over p<.05). Control group; The performance of this group was improved at only 4 of 9 elements after experiment Comparison of two groups; The performance of service and dash showed a significant difference (p<.01) and the others did not showed it. But as a whole, experimental group was superior to control group in their performance. 3. Viewing Variance and correlation coefficient at the change of RT and SM, there were differences in the variance. This means that the standard deviation is great; i.e. the individual difference is great. The lower correlation coefficient means that correlationship is low in the performance before and after experiment: i.e. it means that individual difference was decreased because the gap of two groups, correlation coefficient became less. Especially, statistics showed that the record of the lower recorded players could be shortened to a maximum.