• Applied Microscopy
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• 제28권3호
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• pp.415-424
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• 1998

[ $Pb(Mg_{1/3}Nb_{2/3})O_3$ ] (PMN) 고용체의 고분해능 격자 이미지에 있어서 장거리 규칙도의 의존성을 컴퓨터 이미지 시뮬레이션을 이용하여 연구하였다. 컴퓨터 이미지 시뮬레이션은 multislice 방법으로 시편 두께, 초점 거리, 장거리 규칙도를 변화시켜 실시하였다. PMN에 있어서, 규칙격자 구조를 가지는 격자 이미지는 장거리 규칙도에 주로 의존하는 것을 발견하였다. 완전한 규칙격자 구조를 가지는 이미지는 유사 육방정 형태를 보였다 장거리 규칙도가 감소함에 따라, 유사 육방정 형태로부터 직사각형 형태로 변화되었고, 완전한 불규칙격자 구조를 가지는 이미지는 직사각형 형태를 보였다. 또한, 한 주어진 장거리 규칙도에서 시뮬레이션으로 얻은 이미지는 B-위치 양이온의 함량에 관계없이 거의 동일하였다.

• 대한전자공학회논문지
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• 제25권4호
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• pp.417-421
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• 1988

In order to analyze the blooming suppression mechanism of a MOS image sensor, test photodiodes have been fabricated and characterized by attaching a source follower circuit. The blooming suppression ability of npn structure compared to that of np structure is quantitatively analyzed and measured by experiment. The dependency of the blooming current on the substrate voltage, the vertical MOS gate voltage and the video voltage is measured and the optimum condition for blooming suppression is presented.

• 한국CDE학회논문집
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• 제1권1호
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• pp.33-44
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• 1996

This study deals with the development of wire path searching module as a part of automobile wire harness design system. Wire path searching module manages the free space, finds transition locations, and creates bundle paths to dramatically reduce a tedious iterative routing process which results in easy optimization of the bundle paths. A prime policy in the system configuration is to compromise between man's and computer's ability, and make it possible a designer's leading role in designing process. Human input is indispensable to cope with the special cases which were not considered in the initial design stage of the system. In this study, we improve the previous shortest-path-finding algorithm, (VGraph and RCA method) into a new method called Extended RCA. Bundles, connectors and transitions are handled as objects so one can manage and modify physical properties of the objects easily. Therefore a verification is allowed at any desired stage of design. The reuse of previous result is facilitated by using Dependency Structure, which represents the mutual relations among connectors, transitions, and bundles. Dependency Structure makes it possible the elimination of redundant calculating process, and consequently shorter routing time.

• 대한간호학회지
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• 제36권7호
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• pp.1215-1223
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• 2006

Purpose: This study was done to understand elderly women within a community who have used lots of drugs. Method: Data was collected through in-depth interviews with four elderly women from April 2001 to February 2002. Data was analyzed by Giorgi's phenomenological method(2000). Results: The components in common with drug usage of elderly women were as follows: 'Awareness of the limitation of physical strength and uncertainty of life', 'Dread of a crisis situation occurring', 'Attachment and dependency on drugs', 'Expectation of a comfortable life and death', 'Prevention of family burden', and 'Pursuit of psychological comfort'. The general structure of experiences was as follows: causal factors were 'Awareness of uncertainty and limitation', 'dread of a crisis situation occurring' the results factor was 'Attachment and dependency on drugs' and the facilitating factors were 'Expectation of a comfortable life and death', 'Prevention of family burden', and 'Pursuit of psychological comfort'. The causal relation was cyclic. This structure showed a realistic adaptation pattern. Conclusion: This study contributed to provide fundamental data for nursing interventions for health promotion and promoting quality of life in elderly women by increasing understanding of the experiences of drugs use.

• 한국CDE학회논문집
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• 제19권4호
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• pp.368-389
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• 2014

There are many agendas and discussion subjects for BIM-based Criteria Design phase. At that time, some problems are occurred by software compatibility, simple repetitive tasks, rework caused by missing information etc. In this study, we focus on solving that problems by applying API(Application Programming Interface) method. For effective study, we construct Criteria Design process by using DSM (Dependency Structure Matrix) and study applicability of API. It will be effective for time-consuming task and simply labor-intensive tasks by applying API. we expect improving BIM-based Design Process and Data quality, work productivity without missing information and shapes for using API.

• 한국지진공학회논문집
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• 제23권1호
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• pp.55-70
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• 2019

The phase properties of ground acceleration records from Mw 5.5~6.5 earthquakes are analyzed. The interrelationships between phase properties and significant durations, as well as PGA, are clarified through both of theoretical and empirical approaches. The probabilistic characteristics of phase information is also discussed based on previous studies and it is shown that circular normal distribution is the most appropriate probability distribution for the phase angle and phase difference. Whereas those variates can be modeled by Gaussian random variables. From the survey results on the frequency dependency of the phase statistics, a simple model is introduced, which is possible to express the frequency dependency of phase information. It is also shown that the significant duration can be controlled by appropriately chosen standard deviation of phase difference for 4~8Hz frequency band and additional consideration of phase scattering in higher frequency band through a series of Monte Carlo simulations. The source of phase scattering effect is also pointed out and discussed.

• 한국재료학회지
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• 제2권1호
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• pp.76-82
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• 1992

$TEOS-O_3$ 산화막은 깔개층 물질에 따라 증착속도가 변하는 특성을 나타낸다. 본 논문에서는 $TEOS-O_3$ 산화막의 깔개층 물질 의존성 이외에도 배선 밀도, 배선 간격에 따라 증착속도가 달라지는 패턴 의존성에 대하여 조사하였다. 또한 $TEOS-O_3$ 산화막의 깔개층 물질 의존성 및 패턴 의존성을 줄이기 위해 다층 배선에서 1차 배선후에 깔개층, 즉 TEOS-base 프라즈마 산화막 및 $SiH_4-base$ 프라즈마 산화막을 증착했을 때 $TEOS-O_3$ 산화막의 증착 특성을 조사하였다. 그리고 그 깔개층 물질에 $N_2$ 프라즈마 처리를 했을 때 $TEOS-O_3$ 산화막의 증착 특성에 대해 조사하였다. 그 결과 $TEOS-O_3$ 산화막에서 기판 위에 배선 밀도와 배선 간격에 따른 의존성은 깔개층물질이 $SiH_4-base$ 일때보다 TEOS-base 프라즈마 산화막인 경우 $N_2$ 프라즈마 처리를 하면 깔개층 물질 표면이 O-Si-N화 되므로써 의존성이 사라지게 된다.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2010년도 추계학술대회
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• pp.78-81
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• 2010

In this paper, we propose an efficient and effective selective protection scheme to SVC that exploit the propagation of protection effect by protecting significant frames that can give the maximum visual quality degradation. We model SVC dependency coding structure as a directed acyclic graph which is characterized with an estimated visual quality value as the attribute at each node. The estimated visual quality is calculated by using our model based on the proportions of intra- and inter-predicted MBs, amounts of residual, and estimated visual quality of reference frames. The proposed selective protection scheme traverses the graph to find optimal protection paths that can give maximum visual quality degradation. Experimental results show that the proposed selective protection scheme reduces the required number of frames to be protected by 46.02% compared to the whole protection scheme and 27.56% compared to the layered protection scheme.

• 아동학회지
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• 제20권3호
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• pp.19-32
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• 1999

This study analyzed the relation of children's attachment security and mother-child interaction to children's peer interactions. The subjects were 51 preschoolers, 44 to 57 months of age and their mothers. Attachment was assessed using the Attachment Q-set (Waters, 1987), mother-child interactions at home were observed with the use of the Teaching Strategies Rating Scales (Erickson, Sroufe, Egeland, 1985), and peer interactions were observed during free play time, using the Holloway and Erickson(1988) categories. Pearson correlation and multiple regression showed that attachment security scores were negatively related to dependency toward peers. Mother's "structure and limit setting" and "respect for child's autonomy" were positively related to "helping with peers" and negatively to "asking for help" and "physical attack". The variables accounting for dependency toward peers were mother's hostility and attachment security.

• 한국정보과학회 언어공학연구회:학술대회논문집(한글 및 한국어 정보처리)
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• 한국정보과학회언어공학연구회 2008년도 제20회 한글 및 한국어 정보처리 학술대회
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• pp.1-4
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• 2008

본 논문에서는 의존 문법, 하위범주화, 그리고 조사와 어미의 분석과 처리에 기반 한 한국어 파서를 제시하고 논의한다. 의존 문법과 하위범주화는 BNF(Backus Naur Form)를 확장한 형식을 사용하여 정의하였다. 논문에서 한국어 파서의 개념적 기본 구도를 C 프로그램 형식을 사용하여 나타내었다. 현재 구현된 한국어 파서의 구성을 설명하고 실행결과를 보여준다.