• 한국멀티미디어학회논문지
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• 제11권1호
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• pp.23-33
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• 2008

본 논문에서는 공간정보와 색상변화율을 이용한 영상검색방법을 제안한다. 제안된 방법은 공간정보를 추출하기 위하여 임계치 $\tau$에 의하여 영상으로부터 색상영역들을 추출한다. 이 과정에서 색상 영역의 수와 색상변화 횟수를 계산하며, 이 값들을 이용하여 색상변화율을 얻는다. 영상간의 유사도는 공간정보에 의해여 측정되며, 색상변화율은 유사한 색상변화율을 가진 이미지가 보다 높은 검색 순위가 갖도록 돕는다. 다양한 자연영상들을 이용한 실험을 통하여 제안된 방법이 색상정보를 이용한 다른 일반적인 방법들보다 뛰어난 성능을 보임을 확인하였다.

• 한국도서관정보학회지
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• 제30권3호
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• pp.255-294
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• 1999

This paper tries to interpret the processes of establishing the public libraries in Changwon City and its changing sociological roles. The roles of the public libraries are changing according to the aspects of the communities. Thus roles of the libraries in Changwon have also changed with the various changes in Korean society. The periods are divided into three: before the declaration June 29(1980-1987); the appearances of civil libraries and local community libraries(1988-1998); the maeul (which means small community) libraries that the citizens have established and participated. By the three periods this paper interprets the processes of establishing the libraries and their changing in Changwon City.

• 한국분말재료학회지
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• 제22권2호
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• pp.87-92
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• 2015

Metallic porous materials have many interesting combinations of physical and geometrical properties with very low specific weight or high gas permeability. In this study, highly porous Cu foam is successfully fabricated by a slurry coating process. The Cu foam is fabricated specifically by changing the coating amount and the type of polyurethane foam used as a template. The processing parameters and pore characteristics are observed to identify the key parameters of the slurry coating process and the optimized morphological properties of the Cu foam. The pore characteristics of Cu foam are investigated by scanning electron micrographs and micro-CT analyzer, and air permeability of the Cu foam is measured by capillary flow porometer. We confirmed that the characteristics of Cu foam can be easily controlled in the slurry coating process by changing the microstructure, porosity, pore size, strut thickness, and the cell size. It can be considered that the fabricated Cu foams show tremendous promise for industrial application.

• 동굴
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• 제78호
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• pp.29-31
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• 2007

This paper is devoted to a study of the characterization of the plasma state. For the purpose of monitoring plasma condition, we experiment on reactive ion etching (RIE) process. Without actual etch process, generated oxygen plasma, measurement of plasma emission intensity. Changing plasma process parameters, oxygen flow, RF power and chamber pressure have controlled. Using the optical emission spectroscopy (OES), we conform to the unique oxygen wavelength (777nm), the most powerful intensity region of the designated range. Increase of RF power and chamber pressure, emission intensity is increased. oxygen flow is not affect to emission intensity.

• 품질경영학회지
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• 제50권3호
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• pp.473-490
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• 2022

Purpose: The purpose of this study is to propose a new useful suggestion to monitor the stability of process by developing a stability ratio or index related to investigating how well the process is controlled or operated to the specified target. Methods: The proposed method to monitor the stability of process is building up a new measure index which is making up for the weakness of the existing index in terms of short or long term period of production. This new index is a combined one considering both stability and capability of process to the specification limits. We suppose that both process mean and process variation(or deviation) are changing on time period. Results: The results of this study are as follows: regarding the stability of process as well as capability of process, it was shown that two indices, called SI(stability index) and PI(performance index), can be expressed in two-dimensional X-Y graph simultaneously. This graph is categorized as 4 separated partitions, which are characterized by its numerical value intervals of SI and PI which are evaluated by test statistics. Conclusion: The new revised index is more robust than the existing one in investigating the stability of process in terms of short and long period of production, even in case both process mean and variation are changing.

• 예술인문사회 융합 멀티미디어 논문지
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• 제6권3호
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• pp.403-411
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• 2016

본 연구에서는 재한 중국동포의 한국에서의 민족 정체성의 변화과정에 대해서 알아보고자 하였다. 이를 위해 한국에 거주하는 중국동포 12명에 대한 심층인터뷰를 통해 그들이 한국에 거주하면서 민족 정체성이 어떻게 변화되었는지를 고찰하고자 하였다. 연구결과 재한 중국동포들의 민족 정체성은 그들의 문화적응과정과 밀접한 연관이 있었으며 3단계의 변화과정을 보여주었다. 첫째, 한국에 입국한 초창기의 중국동포들은 고국에 대한 기대와 설렘에서 한국생활을 시작한다. 둘째, 중국동포들은 주류사회와의 부딪침 속에서 민족정체성의 위기를 맞이하여 중국 조선족으로 회귀한다. 셋째, 지금 재한 중국동포의 민족정체성은 재조정기로 일부는 한국인, 일부는 중국조선족, 일부는 한국인도 중국인도 아닌 제3의 정체성을 지니고 있는 것으로 확인되었다. 따라서 본 연구결과를 통해 재한 중국동포들의 한국문화 적응과정 중의 민족정체성의 변화를 살펴볼 수 있었다. 그들의 건강한 민족정체성은 한국사회의 사회통합에도 큰 영향을 미친다. 이를 위해서는 한국 주류사회와 중국동포들이 함께 노력해야 할 필요성을 알 수 있었다.

• 품질경영학회지
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• 제47권3호
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• pp.437-451
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• 2019

Purpose: The purpose of this study is to improve the quality of the PGM system by improving the structure and production process of slip-ring rotary joint for radar. Methods: The improvement measures for each cause are established through failure analysis of broken items. Specifically, changing in the housing to improve the heating system. Changing the transportation method to prevent damage to equipment during transport. Changing work process of the attenuator ring to prevent damage. etc. Results: The results of this study are as follows; improving the heating system reduces heat generated by the attenuator by about 7 degrees and obtain additional temperature margins. Reduction of defect rate because of adding X-band rotary joint run-out measurement test, ESS of slip-ring rotary joint and Transportation improvement(reinforced flight boxes, tube protection, etc). Getting stable VSWR values by improving work process of attenuator overheating due to a bad bonding process. Conclusion: Through this study, improvements were made to slip-ring rotary joint that failed repeatedly for various reasons. As a result of the application of the improvements, the same fault does not occur until now, so we can see that the quality of PGM has improved.

• 한국심리학회지:학교
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• 제18권1호
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• pp.1-29
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• 2021

본 연구는 학령인구 감소에 따른 고등교육기관 존립의 위협이 높아진 현 상황에서 지방사립 대학 고학년 남학생들의 학업중단의 과정을 이해하기 위한 목적을 갖고 있다. 이를 위하여 충청북도 소재지 한 대학에서 제적 학생의 명단을 받아 연구 참여에 동의한 15명 학생과의 심층인터뷰를 실시하였다. 인터뷰 자료는 모두 전사하여 질적 연구 분석 방법 가운데 근거이론을 활용하여 분석하였다. 그 결과, 총 183개의 개념과 54개의 하위 범주, 18개의 상위 범주를 도출하였고, 축코딩 매트릭스의 결과를 제시하였다. 과정 분석에서는 지방사립대 고학년 남학생의 학업중단의 과정은 총 7단계로, '소속감 찾기', '재미 찾기', '멈춰 생각하기', '(바깥)세상 경험하기', '진로 확정하기', '몰두하기', '학업 마무리 짓기'를 통해 이뤄지는 것으로 나타났다. 본 연구의 결과를 중심으로 선행연구와의 비교분석을 제시하였고, 향후 지방사립대학의 존립을 위한 대안도 함께 제시하였다.

• Management Science and Financial Engineering
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• 제8권1호
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• pp.21-38
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• 2002

Rapid advances in information technology(IT) and telecommunication systems impact the number and quality of decision-making in organizations. Specifically, middle mangers must posses or develop the creativity necessary for survival in a constantly changing and volatile business environment. While tradition and conventional wisdom tell us that a middle managers role centers on control and monitoring, todays competitive arena has spun out a new managerial requirement developing and maintaining an innovative attitude. Problematically, most previous research has focused on the issue of changing decision authority (i. e. centralization/decentralization). Moreover, much previous research has also largely ignored environmental changes exposing new roles that middle managers have assumed. This study explores the means of identifying middle managerial roles, managerial possibilities involving the growing popularity of open systems through electronic brainstorming, and an adaptation and development of Diffusion Theory and attempt to counter criticism leveled at the theory's inability to provide an adequate explanation for diffusion of complex organizational technology. This paper develops three ideas: 1) Introducing the 'Chasing Curve' as a theoretical background. 2) Suggesting a new methodology using electronic brainstorming for analyzing the gap between Knowing (the perceived importance of middle managers' roles) and Doing (the degree of current status of middle managers' roles), which we term the 'Spiral Gap Analysis Model'. 3) Identifying a feedback system for minimizing the Knowing - Doing gap, aimed at development of IT strategic priority decision support, which we call this the 'Star Process'.

• Journal of the Optical Society of Korea
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• 제18권6호
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• pp.633-638
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• 2014

We report experimental behaviors of condensed $^{87}Rb$ atoms responding to changes in the trap potential of the atomchip. The two-types of adiabatic and non-adiabatic overall changes were implemented by changing the ramp-down speed of the chip-wire current, which can dominantly modify the one-axis magnetic field gradient. Under the adiabatic process, a pure condensate stayed in the initial spin state and collectively oscillated with both monopole and dipole modes, while an atomic cloud above the critical temperature exhibited sound waves in a dense ultracold gas. On the other hand, Bose-Einstein condensate atoms with non-adiabatic perturbation were split into spatially different positions by spin states through spin-flip. We investigated the split ratio among spin states depending on final evaporation frequency. Potential changes, of course, cause collective oscillations regardless of the changing process.