• 제목/요약/키워드: Part-Whole

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비전을 이용한 중.대형 판재성형 제품의 곡면 변형률 측정 알고리듬 개발 (Development of an Algorithm for the Vision-Based Surface-Strain Measurment of Large Stamped Parts)

  • 김형종
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 1999년도 춘계학술대회논문집
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    • pp.269-272
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    • 1999
  • It is still hard to measure the strain distribution over entire surface of a medium or large-size stamped part even by using an automated strain measurement system. Several methods which enable to enlarge the measurement range without losing accuracy and precision are suggested in this study, The superposition of images having different high-lightened or damaged part each other results in an enhanced image. A new method for constructing the element connectivity from a line-thinned image makes it possible to identify up to 1,000 elements. And the geometry assembling algorithm is proved very efficient in which the whole area to be measured is divided into several parts ; the coordinate transformation between every two adjacent parts is obtained from the concept of the least square error ; and the 3-D shape or strain distribution over the whole surface is assembled,

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형상의 대칭성을 이용한 효율적인 3차원 유한요소 해석 기법에 관한 연구 (A Study on the Efficient Finite Element Technique using Geometrical Symmetry)

  • 임창환;김홍규;이석희;정현교
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제49권7호
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    • pp.462-467
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    • 2000
  • In general, when geometry and current distribution have a periodic or symmetric property, the analysis of a part model is sufficient to represent that of a whole model by using the periodic boundary condition. It is impossible, however, to apply the periodic boundary condition when the current distribution is not symmetric even if the geometry of the model is symmetric. In this paper, a novel technique to resolve this problem is proposed. Even when the geometry is symmetric and the current distribution is not, the proposed method enables that calculation time for a whole model is reduced to that for a part model. The proposed method is applied to a deflection yoke (DY), and validness and efficiency of the method are verified.

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Development of the Practical and Adaptive Die of Fixed Stripper Type for Marine Part Sheet Metal Working(part 1)

  • Sim, Sung-Bo;Song, Young-Seok;Sung, Yul-Min
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2000년도 춘계학술대회 논문집
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    • pp.35-39
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    • 2000
  • The piercing and blanking of thin sheet metal working is specified division in press die design and making. In order to prevent the detects, the optimum design of the production part, strip process layout, die design, die making and try out etc. are necessary the analysis of effective factors. For example, theory and practice of metal shearing process and its phenomena, die structure, machine tool working for die making, die materials and its heat treatment, metal working in industrial and its know how etc. In this study, we analyzed whole of data base, theoretical back ground of metal working process, and then performed the progressive die tryout with the screw press. This study regards to the aim of small quantity of production parts press working. Part 1 of this study reveals with production part and strip process layout design.

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사람의 신체에 대한 러시아어 슬랭의 의미론적 분석 (A Semantic Analysis of Human Body Russian Slang)

  • 김성완
    • 비교문화연구
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    • 제31권
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    • pp.241-262
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    • 2013
  • In this study, we select and analyze the slang that is represented in Elistratov's "Dictionary of Russian slang". Through the above analysis, some conclusions were drawn as follows: First, as a social and psychological phenomenon appears universal in all languages, the study of slang generates strict criteria for the analysis. Unlike literary language, listed in the dictionary slang expressions can become obsolete for their short period of usage by native speakers. Therefore, in the following research of the actual data, we have to validate words targeted for analysis. Second, as the result of the analysis it is metaphor for the most part studied rather than metonymy. The semantic derivations as a result of metonymy are used very frequently in real life. But in this study we mainly analyze words, therefore the number of words was less in metonymy than was expected. Third, the basic types of metaphor are appeared as similarity by form, function, and location, and there are varieties of intervening of subjectivity in similarity of emotional impression. Fourth, the metonymy is divided into three cases: the part meaning the whole, the whole meaning the part, and some thing meaning the reality of where it exists. Fifth, not only literary language, but also slang as the 'transitional process' is the most active way of development of new meanings, and there are two methods to transfer main meaning to second meaning.

전기체 낙하산 시스템의 장착에 대한 인증 고려사항 (Consideration on certification of installation of whole airplane recovery parachute)

  • 김성겸
    • 항공우주시스템공학회지
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    • 제10권2호
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    • pp.22-26
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    • 2016
  • Whole airplane recovery parachute system(WARPS) is a auxiliary safety system to protect occupants in emergency situation where recovery to normal flight condition is impossible. In this paper, application and certification cases of WARPS for Part 23 small airplane is introduced and considerations in certification of the WARPS installed airplane are provided in terms of performance of parachute, function and operation, loads and strength and protection of occupants.

한중 '적벽(赤壁)' 경관 이미지와 예술작품 비교 고찰 - 한국 내 '적벽' 답사를 중심으로 (A Comparative Study on the Paintings & the Landscapes of 'The Red Cliff' in China and Korea)

  • 김재현
    • 비교문화연구
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    • 제19권
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    • pp.7-24
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    • 2010
  • This paper is to survey a serise for The Red Cliff which is depicted The Former and Latter Odes on the Red Cliff written by Su Shi. This subject was mainly painted by the literati painters and consistently represented. In format of The Red Cliff, there are basically a types of pictorial depicton in accordance with their contents. Describing the whole scenes and the part of the story. Others is painted which bring from one scene of describing the whole scenes of the story.

Monoamine Oxidase Inhibitors from the Whole Plant of Cayratia japonica

  • Han, Xiang-Hua;Hong, Seong-Su;Park, Seon-Soon;Huh, Jae-Doo;Lee, Kyong-Soon;Lee, Myung-Koo;Hwang, Bang-Yeon;Ro, Jai-Seup
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.256.1-256.1
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    • 2003
  • As a part of our ongoing research to discover novel monamine oxidase (MAO) inhibitors of plant origin, we found that a MeOH extract from the whole plant of Cayratia japonica (Vitaceae) strongly inhibited the MAO activity in mouse brain. The EtOAc-soluble fraction was. therefore, subjected to the bioactivity-guided fractionations to isolate the active compounds. (omitted)

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전뇌 방사선치료 시 Optimold에 따른 수정체의 흡수선량 평가 (The evaluation of lens absorbed dose according to the Optimold for whole brain radiation therapy)

  • 양용모;박병석;안종호;송기원
    • 대한방사선치료학회지
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    • 제26권1호
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    • pp.77-81
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    • 2014
  • 목 적 : 현재 전뇌 방사선 치료 시 두부의 고정을 위하여 Optimold가 사용되고 있다. 하지만 Optimold로 인한 산란선에 의해 피부선량이 약 22% 증가하게 된다. 백내장을 일으키는 최소선량이 2 Gy 이므로 특히 수정체에서는 영향이 크다고 볼 수 있다. 이에 전뇌 방사선 치료 시 Optimold 안구 부분의 유무에 따른 수정체에 흡수되는 선량을 비교평가 하고자 한다. 대상 및 방법 : 안구 부분의 Optimold의 유무에 따른 수정체에 흡수되는 선량을 비교평가 하고자 인체모형팬텀(Anderson Rando Phantom, USA)의 수정체 부분에 5mm bolus를 올려 Optimold mask를 만들었다. 모의치료 시 수정체의 선량측정을 위해 bolus 밑에 GAFCHROMIC EBT3 film을 위치시켜 모의치료를 진행하고 전산화치료계획시스템(Pinnacle, PHILIPS, USA)을 통해 치료계획을 수립한 후 치료도 동일하게 진행하여 3회 반복측정 하였다. 안구 부분의 Optimold mask를 제거하고 위와 동일한 방법으로 측정하였다. 디지털 평판 스캐너(Expression 10000XL, EPSON, USA)를 이용하여 film을 스캔한 후 선량을 측정하여 안구 부분의 Optimold mask의 유무에 따른 선량을 비교평가 하였다. 결 과 : 안구 부분의 Optimold mask가 있을 때 모의치료 시 $10.2cGy{\pm}1.5$, 치료 시 $24.8cGy{\pm}2.7$, 안구 부분의 Optimold mask를 제거하였을 때 모의치료 시 $12.9cGy{\pm}2.2$, 치료 시 $17.6cGy{\pm}1.5$로 측정 되었다. 결 론 : 안구 부분의 Optimold mask를 제거하였을 경우 제거하지 않았을 경우에 비하여 모의치료 시 약 3 cGy의 선량이 증가하였고 치료 시 약 7 cGy의 선량이 감소하였다. 전 치료과정 중 수정체의 흡수선량이 약 27%감소되어 방사선감수성이 높은 수정체에 흡수되는 선량이 줄어 백내장을 일으킬 확률과 부작용을 감소시킬 수 있을 것으로 사료된다.

자동 선구조 추출 알고리즘을 이용한 경북 의성지역의 선구조 분석 (Lineament analysis in the euiseong area using automatic lineament extraction algorithm)

  • 김상완
    • 자원환경지질
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    • 제32권1호
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    • pp.19-31
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    • 1999
  • In this study, we have estimated lineaments in the Euiseong area, Kyungbuk Province, from Landsat TM by applying the algorithm developed by Kim and Won et al. which can effectively reduce the look direction bias associated with the Sun's azimuth angle. Fratures over the study area were also mapped in the field at 57 selected sites to compare them with the results from the satellite image. The trends of lineaments estimated from the Landsat TM images are characterized as $N50^{\circ}$~70W, NS~$N10^{\circ}$W, and $N10^{\circ}$~$60^{\circ}$E trends. The spatial distribution of lineaments is also studied using a circular grid, and the results show that the area can be divided into two domains : domain A in which NS~$N20^{\circ}$E direction is dominant, and domain B in which west-north-west direction is prominent. The trends of lineaments can also be classified into seven groups. Among them, only C, D and G trends are found to be dominant based upon Donnelly's nearest neighbor analysis and correlations of lineament desities. In the color composite image produced by overlaying the lineament density map of these C-, D-, and G-trends, G-trend is shown to be developed in the whole study area while the eastern part of the area is dominated by D-trend. C-trend develops extensively over the whole are except the southeastern part. The orientation of fractures measured at 35 points in the field shows major trends of NS~$N30^{\circ}$E, $N50^{\circ}$~$80^{\circ}$W, and N80$^{\circ}$E~EW, which agree relatively well with the lineaments estimated form the satellite image. The rose diagram analysis fo field data shows that WNW-ESE trending discontinuities are developed in the whole area while discontinuities of NS~$N20^{\circ}$E are develped only in the estern part, which also coincide with the result from the satellite image. The combined results of lineaments from the satellite image and fracture orientation of field data at 22 points including 18 minor faults in Sindong Group imply that the WNW-ESE trend is so prominent that Gumchun and Gaum faults are possibly extended up to the lower Sindong Group in the study area.

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외래환자의 종합병원에 대한 만족도 조사 연구 (A study on satisfaction of outpatient toward hospital)

  • 윤영옥
    • 보건교육건강증진학회지
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    • 제1권1호
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    • pp.72-82
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    • 1983
  • The purpose of this study is to provide the basic data necessary for the effective performance of administrative readjustment and demend and suppley medical care service by of analysing the extent of satisfaction of outpatient toward hospital. The subjects of this study are the 832 outpatients (398 male and 434 female) visit to 2 different university hospital in Seoul. The data were collected through self-administered techniques with a structured questionnaire from Oct.21 to Nov. 9, 1982. All the collected data were analyzed by means of percentage, mean and standard deviation. The results were as follows: 1. Those who are between :30 and 39 of age constitute the largest part of them as being 31.7 percent of the whole body. 40.0 percent of them graduated from the college and they take the lergest part of those who answered the questionnaire. 43.3 percent of the patients visit to the hospital by the reason for the reputation of a doctor and they take the largest part of the subjects. 2. The extent of satisfaction for hospital system. The mean extent of satisfaction for hospital system was revealed 2.50 scores, which is evaluated to neutral. The mean extent of satisfaction for waiting time of prescribed medicine presented 1.51 scores, the lowest among the component of hospital system, which is evaluated to high dissatisfaction. 3. The extent of satisfaction for the environment and facilities of hospital. The mean extent of satisfaction for the environment and facilities of hospital was revealed 3.08 scores, which is evaluated to moderate satisfaction. 4. The extent of satisfaction for doctor and other hospital employees. The mean extent of satisfaction for doctor and other hospital employees was revealed 3.05 scores which is evaluated to moderate satisfaction. The mean extent of satisfaction for doctor presented 3.39 scores, the highest among the components of doctor and other hospital employees. 5. The extent of satisfaction for charge of hospital. The mean extent of satisfaction for charge of hospital was revealed 2.74 scores, which is evaluated to neutral. 6. The extent of whole satisfaction for hospital. The mean extent of whole satisfaction for hospital was revealed 2.84 scores which is evaluated to neutral.

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