• 한국데이타베이스학회:학술대회논문집
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• 한국데이타베이스학회 1999년도 춘계공동학술대회: 지식경영과 지식공학
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• pp.145-154
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• 1999

An intelligent system embedded with multiple sources of knowledge may provide more robust intelligence with highly ill structured problems than the system with a single source of knowledge. This paper proposes the hybrid knowledge integration mechanism that yields the cooperated knowledge by integrating expert, user, and machine knowledge within the fuzzy logic-driven framework, and then refines it with a genetic algorithm (GA) to enhance the reasoning performance. The proposed knowledge integration mechanism is applied for the prediction of Korea stock price index (KOSPI). Empirical results show that the proposed mechanism can make an intelligent system with the more adaptable and robust intelligence.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 1999년도 춘계공동학술대회-지식경영과 지식공학
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• pp.145-154
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• 1999

An intelligent system embedded with multiple sources of knowledge may provide more robust intelligence with highly ill structured problems than the system with a single source of knowledge. This paper proposes th hybrid knowledge integration mechanism that yields the cooperated knowledge by integrating expert, user, and machine knowledge within the fuzzy logic-driven framework, and then refines it with a genetic algorithm (GA) to enhance the reasoning performance. The proposed knowledge integration mechanism is applied for the prediction of Korea stock price index (KOSPI). Empirical results show that the proposed mechanism can make an intelligent system with the more adaptable and robust intelligence.

• 한국주거학회논문집
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• 제10권3호
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• pp.213-220
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• 1999

The purpose of this study was to find the degree of satisfaction of the Korean elderly with their existing residential environment and their propensity to move. The data were collected through interviews and structured questionnaires. The subjects were 1,200 nationwide elderly over the age of 60 selected by probability sampling proportionate to size. cluster and random sampling method. The data were analyzed with frequency. percentage. and $X^2$-test using the SAS package. The major findings were as follows: Most subjects were satisfied with their housing environment and had no intention of moving. The subjects were highly satisfied with their residential environment. did not tend to move. This result does not necessarily mean that there is no need for better housing and no need to design elderly housing in Korea. It implies the need for community integrated housing development with flexible service system.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2004년도 학술대회지
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• pp.342-346
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• 2004

Recently there has been a great world-wide interest in developing and characterizing new nano-structured materials. These newly developed materials are often prepared in limited quantities and shapes unsuitable for the extensive mechanical testing. The development of depth sensing indentation methods have introduced the advantage of load and depth measurement during the indentation cycle. In the present work, ZnO thin films are prepared on the Glass, GaAs(100), Si(111), and Si(100) substrates at different temperatures by pulsed laser deposition(PLD) method. Because the potential energy in c-axis is law, the films always shaw c-axis orientation at the optimized conditions in spite of the different substrates. Thin films are investigated by X-ray diffractometer and Nano indentation equipment. From these measurements it is possible to get elastic modulus and hardness of ZnO thin films on all substrates.

• 한국보육지원학회지
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• 제16권4호
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• pp.111-133
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• 2020

Objective: The purpose of this study is to find out how teachers organize and operate early childhood classroom, as play areas. Methods: Four teachers who had been aware of importance of play and were motivated to form an early childhood classroom as a play area were selected as research participants. Semi-structured interview and participatory observations were conducted to collected data. Results: The findings of the study are as follows. First, in regard to the role of the early childhood classroom as a play space, teachers supported the play of children and wanted to organize and operate the classroom as a play space. Second, as, play space, the teachers wanted to construct the space according to their own perception with children. Conclusion/Implications: The conclusions of this study are as follows. First, the teachers attempted to create play space by recognizing the contradictions that the classroom had. Second, the teacher organized the classroom into a play area and allowed the children to transform and create the space in their own.

• 지역사회간호학회지
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• 제20권4호
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• pp.443-452
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• 2009

Purpose: The purpose of this study were to examine the need of community care services and the influencing factors of the need in the family care givers of hospital-based home care patients. Methods: Data were collected from 256 family caregivers, who were recruited from 10 hospitals in a metropolitan city. A structured questionnaire on the characteristics of caregivers, resources, and patients was administered. Also, questions on the need of community care services were added. Logistic regression analysis was used to identify the influencing factors of the need for community care services. Results: The participant needed more transportation service, lease of health care devices, visiting bath, caring, visiting hair dressing than that of housekeeping, short-term care, and day care service. Various variables from the three factors were found to be influenced on the need of community care services. Conclusion: The accessibility of the higher need of community care services should be increased for hospital-based home care users. Also, the factors of Family care giver, Resource, and Patient might be considered to provide community care services of hospital-based home care users.

• 공업화학
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• 제18권3호
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• pp.218-226
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• 2007

키랄성 말단기의 에폭사이드는 키랄중간체나 여러 출발물질로서 다양하게 이용되기 때문에 입체선택적인 합성방법은 학술적으로나 산업적인 관점에서 대단히 흥미롭다. 본 연구에서는 염화갈륨, 인듐 및 탈륨을 함유한 2분자형의 키랄성 코발트 살렌 촉매를 새로이 합성하고 그 특성을 평가하였다. 촉매가 2분자형을 갖는지의 직접적인 증거를 질량분석과 EXAF분석을 통하여 제시하였다. 합성한 촉매는 여러 종류의 에테르 및 에스테르 그룹을 함유한 에폭사이드 유도체의 가수분해의 속도차에 의한 비대칭 고리열림반응에 적용하여 그 활성과 선택성을 조사하였다. 합성이 용이한 2분자구조의 살렌착체 촉매는 물을 친핵체로 하는 라세믹 에폭사이드의 고리 열림을 통하여 99%ee 이상을 나타낼 정도의 매우 높은 광학선택성을 보였다. 2분자형의 살렌 촉매는 단분자형의 촉매에 비하여 촉매량을 적게 첨가하여도 현저히 향상된 촉매활성을 나타내었다. 본 연구에서 적용한 촉매시스템은 키랄 에폭사이드 및 1,2-디올 중간체의 제조에 매우 효과적이었다

• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제43회 하계 정기 학술대회 초록집
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• pp.86-86
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• 2012

The new approaches for silicon solar cell of new concept have been actively conducted. Especially, solar cells with wire array structured radial p-n junctions has attracted considerable attention due to the unique advantages of orthogonalizing the direction of light absorption and charge separation while allowing for improved light scattering and trapping. One-dimenstional semiconductor nano/micro structures should be fabricated for radial p-n junction solar cell. Most of silicon wire and/or pillar arrays have been fabricated by vapour-liquid-solid (VLS) growth because of its simple and cheap process. In the case of the VLS method has some weak points, that is, the incorporation of heavy metal catalysts into the growing silicon wire, the high temperature procedure. We have tried new approaches; one is electrochemical etching, the other is noble metal catalytic etching method to overcome those problems. In this talk, the silicon pillar formation will be characterized by investigating the parameters of the electrochemical etching process such as HF concentration ratio of electrolyte, current density, back contact material, temperature of the solution, and large pre-pattern size and pitch. In the noble metal catalytic etching processes, the effect of solution composition and thickness of metal catalyst on the etching rate and morphologies of silicon was investigated. Finally, radial p-n junction wire arrays were fabricated by spin on doping (phosphor), starting from chemical etched p-Si wire arrays. In/Ga eutectic metal was used for contact metal. The energy conversion efficiency of radial p-n junction solar cell is discussed.

• 한국전기전자재료학회논문지
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• 제23권6호
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• pp.497-501
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• 2010

Nano structure $Bi_2Te_3$ films were deposited on (100) GaAs substrates using a modified MOCVD system and the effect of growth parameters on the structural properties were investigated. Different from conventional MOCVD systems, our reactor consist of pressure control unit and two heating zones ; one for formation of nano-sized particles and the other for the growth of nano particles on substrates. By using this instrument we successfully grow $Bi_2Te_3$ films with nano-grain size. The film grown at high reactor pressure has large grain size. On the contrast, the grain size decreases with a decrease in pressure of the reactor. Here, we introduce new growth methods of nano-grain structured $Bi_2Te_3$ films for high thermoelectric figure of merit.

• 디지털콘텐츠학회 논문지
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• 제19권9호
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• pp.1707-1715
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• 2018

본 연구는 치과위생사의 업무역할특성과 사회적 지원이 감정노동에 미치는 영향을 분석하고자 시도된 조사연구로 울산지역 치과병의원에 근무하고 있는 치과위생사들 중 연구에 동의한 103명을 대상으로 구조화된 설문지를 이용하여 시행되었다. 수집된 자료의 통계분석은 SPSS Statistics ver 18.0 for windows 프로그램을 이용하여, t-test와 ons-way ANOVA, 상관분석 및 중다회귀분석을 실시하였다. 연구결과 직무역할 특성과 감정노동과의 관계에서 역할갈등이 높고 역할 모호성이 클수록 감정노동의 강도가 높았고 사회적 지원을 많이 받을수록 감정노동의 강도가 낮게 나타났다. 치과위생사들의 감정노동이 개인적 차원에서 스스로 감정을 잘 관리하는 차원을 넘어 치과병의원에서의 구성원과의 관계 개선을 위한 노력과 치과위생사 업무특성에 따른 명확성과 보다 전문적인 업무 세분화를 통해 해소될 수 있다고 볼 수 있어 이는 치과위생사의 감정노동에 대한 관리방안을 마련하는데 도움이 될 것이라고 본다.