• 건축역사연구
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• 제18권3호
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• pp.61-78
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• 2009

Although the royal tomb keeper's house in the late Joseon period did not undergo dramatic changes, overall, the keeper's house of Yeong Mausoleum, the tomb of King Hyojong, and other royal tombs afterward showed the classification of its rooms according to their purpose and the expansion of its size. During King Yeongjo's reign, the tomb keeper's house tended to consist of Jaesil, Anhyangcheong, Jeonsacheong and Haenggak. The size and arragement pattern of the tomb keeper's house of Yeong Mausoleum were partially maintained in royal mausoleums constructed afterward. Especially Anhyangcheong was first established on the tomb keeper's house of Yeong Mausoleum and its architectural form was maintained until that of Ye Mausoleum, the tomb of King Cheoljong. The tomb keeper's house of Yeong mausoleum in Yeoju was constructed in 1659 and then moved in 1673 and 1674. In order to bury King Hyojong's wife with King Hyojong, the site of Yeong Mausoleum was moved twice with using almost all materials used for the initial tomb. In addition, as norms related to rites performed at royal tombs were created in the early 20th century, the tomb keeper's house of Yeong Mausoleum was selected as an exemplary tomb keeper's house representing the royal tomb keeper's house of the Joseon era, and it mostly coincides with its remaining arrangement pattern. Through records distributed in relatively similar periods, it is considered that most of the features fo royal tomb keeper's house in the Joseon period have been inherited until today and that Yeong Mausoleum has a very higher architectural status as an especially valuable tomb keeper's house among royal tomb keepr's houses in the Joseon era.

• ETRI Journal
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• 제41권3호
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• pp.383-395
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• 2019

Clock Controlled Dual keeper Domino logic structures (CCDD_1 and CCDD_2) for achieving a high-speed performance with low power consumption and a good noise margin are proposed in this paper. The keeper control circuit comprises an additional PMOS keeper transistor controlled by the clock and foot node voltage. This control mechanism offers abrupt conditional control of the keeper circuit and reduces the contention current, leading to high-speed performance. The keeper transistor arrangement also reduces the loop gain associated with the feedback circuitry. Hence, the circuits offer less delay variability. The design and simulation of various wide fan-in designs using 180 nm CMOS technology validates the proposed CCDD_1 and CCDD_2 designs, offering an increased speed performance of 7.2% and 8.5%, respectively, over a conventional domino logic structure. The noise gain margin analysis proves good robustness of the CCDD structures when compared with a conventional domino logic circuit configuration. A Monte Carlo simulation for 2,000 runs under statistical process variations demonstrates that the proposed CCDD circuits offer a significantly reduced delay variability factor.

• 농촌계획
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• 제20권2호
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• pp.81-90
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• 2014

This study was carried out to identify the limitations and problems of organization, as well as present plans to activate the organization through diagnosis on 'My Hometown Keeper' organization that was created for the purpose of growth of agricultural and fishing regions, and environment improvement. Utilizing Weisbord's Six-box Model, an organization diagnosis model useful for diagnosis of 'My Hometown Keeper' organization, 6 areas including organization's objective, structure, relationship, compensation system, leadership, subsidiary device system etc. and 14 survey questions were prepared, and a survey investigation was conducted on the staff at Korea Rural Community Corporation in charge of 'My Hometown Keeper' participating residents and administrative support. Based on the analysis results of survey investigation, the limitations and problems of organization were identified, and as plans to improve these and activate 'My Hometown Keeper' organization, 'Clear establishment of organization's objective and role', 'Preparation of compensation and incentive system', 'Growth of relationship and leadership between constituents' 'Enhancing the utilization of subsidiary device system such as education and information acquisition etc.' etc. were presented.

• 한국콘텐츠학회논문지
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• 제15권9호
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• pp.118-125
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• 2015

아동안전지킴이 제도는 아동의 범죄피해 방지를 위해 경찰청 주관으로 전국에서 운영되고 있는 협력치안 프로그램이다. 아동안전지킴이 제도는 2009년 시행된 이래 아동범죄 예방효과에 긍정적 영향을 미쳤을 것으로 기대되고 있으나 구체적 효과성은 불분명하다. 운영현황에 대한 실증적 연구와 제도발전을 위한 학술적 검토가 충분하지 못했기 때문이다. 이러한 배경에서 본 연구는 아동안전지킴이 제도의 운영실태를 파악하고 실효성 향상방안을 탐색하기 위한 목적에서 수행되었다. 연구목적 달성을 위해 16개 지역 지방경찰청에 배치된 전체 아동안전지킴이에 대해 할당표본을 추출하여 설문조사를 실시했다. 설문결과는 빈도분석, 티검증, 아노바, 다중회귀분석을 실시했다. 분석결과 제도발전을 위해 아동안전지킴이집과의 연계강화, 아동안전지킴이의 순찰노선에 대한 참여적 편성, 교육관리 감독체계의 개선, 활동비의 적정성, 성공적 직무인식 증진을 위한 아동접촉근무 강화방안 등의 중요성이 검증되었다.

• 대한치과보철학회지
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• 제39권4호
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• pp.336-350
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• 2001

The purpose of this study was to investigate corrosion tendency and to compare corrosion resistance of three dental magnetic attachments and its keeper alloy by coercive, electrochemical method. By using petentiodynamic polarization technique, magnetic elements and its keeper alloy of Magfit EX600 system(MF, MFK), Dyna ES regular system(DN, DNK) and Shiner SR magnet system(SR, SRK) were corroded electrochemically in 0.9% NaCl electrolytic solution. Open-circuit potential and anodic polarization curve was measured with Potentiostat(model 273 EG&E) and polarization curve was created by current density per square area following scanning of increased series of voltage in the rate of 1.0mV per second. Before and after electrochemical corrosion, the surface roughness test was done. Thereafter the change of mean surface roughness value(Ra) and mean peak value(Rt) of surface roughness was compared one another. In order to observe the corroded surface of each specimen, metallurgical light microscopic(${\times}37.5$) and scanning electron microscopic view(SEM ${\times}100$) was taken and compared one another. Conclusion is followings. 1. All of six covering metal of dental magnetic attachments and its keeper alloy were corroded in various degree after electrochemical corrosion. 2. The corrosion resistance of which used in this experiment is the following in high order; DNK, MFK, DN, MF, SRK and SR. 3. Especially Shiner magnet system and its keeper alloy were more severely corroded after electrochemical corrosion and the change of Ra Rt value were more increased than others. 4 Metallurgical and scanning electron microscopic view showed the pitting corrosion tendency of all experimental alloy but DNK and SR. 5. Covering metal of magnet was more corroded than its keeper alloy.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2012년도 한국컴퓨터종합학술대회논문집 Vol.39 No.1(C)
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• pp.7-9
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• 2012

2단계 잠금 규약은 데이터베이스에서 트랜잭션의 직렬성을 보장하는 방법이다. 분산 클라우드 시스템에는 분산된 노드들에 의한 합의 문제가 필연적으로 존재하여, 이는 분산 시스템에서 2단계 잠금을 비롯한 데이터베이스 이론의 적용을 어렵게 한다. 본 논문에서는 ZooKeeper를 이용하여 분산 클라우드 시스템에서 활용 가능한 2단계 잠금의 구현을 보이고, 이것이 트랜잭션의 직렬성을 보장함을 확인한다. 또한 분산시스템의 잠금 과정에서 발생할 수 있는 교착 상태 해결의 구현을 보인다.

• 정보교육학회논문지
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• 제17권3호
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• pp.253-264
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• 2013

본 연구에서는 학교와 가정에서 학생들의 스마트 폰을 제어 할 수 있는 서비스인 아이스마트키퍼를 개발하였다. 이 서비스의 구현은 서버, 교사 앱, 부모앱, 학생앱 등으로 구성하였고, 학교에서의 스마트폰 제어는 학교일일시정표와 위치기반(GPS, Global Positioning System)으로 동작된다. 즉 학교의 주관리자가 미리 설정된 시간에 따라 학생의 스마트폰은 6가지 정책중 하나로 동작된다. 6가지 정책은 비상전화만 허용, 특정앱허용, 전화만허용, 전화/문자허용, 모두허용, 모두잠금 등이다. 이런 6가지 정책은 수업시간에 교사의 스마트폰으로 임시정책에 의해서 실시간으로 변경이 가능하며 특히 특정앱허용의 정책을 활용하면 수업에 유용한 앱만을 가지고 수업이 가능하다. 또한 학생들이 수업시간에 조퇴 등으로 학교위치를 벗어난 경우에는 위치기반으로 학생들의 스마트폰이 학교 정책을 적용받지 않게 된다. 그리고 학생들의 스마트폰 사용 패턴을 분석하여 스마트건강지수를 5가지 유형중 하나로 표시하여 학생들의 건강한 스마트폰 사용을 유도하였다. 또한 가정에서도 부모앱을 활용하여 학생들의 스마트폰 사용을 제어 할 수 있다. 본 서비스의 도입으로 학교에서는 스마트폰을 수거하지 않고 도난에 따른 위험에서 벗어날 수 있다. 현재 1개 초등학교는 전체학생이 사용 중이며 3개 초등학교가 시험 실시중이다. 시험실시결과 교사의 만족도는 매우 높았고 적극적으로 수업에 활용하는 교사의 비율이 높았다. 학생들의 설문 조사 결과 만족도가 높았다.

• 소프트웨어공모대전
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• 통권6호
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• pp.407-412
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• 2001

• 대한가정학회지
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• 제35권1호
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• pp.111-128
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• 1997

the purpose of this study is to investigate the relationship of middle-aged housewives' family role performance and psychological well-being The subjects of this study were unemployed housewives living in the Seoul area whose age was from 40 to 59 The sample size was 374 Data were analysed by the frequencies mean oneway ANOVA and multiple regression. The major findings were as follows: 1) The middle-aged gousewives -who were university graduated had higer family income believed religion-had higher psychological well-being. 2) the more middle-aged housewives performed spousal role mother role house keeper role and kin keeper role the higher their psychological well-being was.

• JSTS:Journal of Semiconductor Technology and Science
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• 제3권2호
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• pp.102-106
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• 2003

This paper describes novel low-power high-speed flip-flop called dual edge-triggered NAND keeper flip-flop (DETNKFF). The flip-flop achieves substantial power reduction by incorporating dual edge-triggered operation and by eliminating redundant transitions. It also minimizes the data-to-output latency by reducing the height of transistor stack on the critical path. Moreover, DETNKFF allows negative setup time to provide useful attribute of soft clock edge by incorporating the pulse-triggered operation. The proposed flip-flop was designed using a $0.35{\;}\mutextrm{m}$ CMOS technology. The simulation results indicate that, for the typical input switching activity of 0.3, DETNKFF reduces power consumption by as much as 21 %. Latency is also improved by about 6 % as compared to the conventional flip-flop. The improvement of power-delay product is also as much as 25 %.