• 한국토양비료학회지
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• 제48권6호
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• pp.751-760
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• 2015

Management of renewable organic resources is important in attaining the sustainability of agricultural production. However, nutrient management with organic resources is more complex than fertilization with chemical fertilizer because the composition of the organic input or the environmental condition will influence organic matter decomposition and nutrient release. One of the most effective methods for estimating nutrient release from organic amendment is the use of N mineralization models. The present study aimed at parameterizing N mineralization models for a number of organic amendments being used as a nutrient source for crop production. Laboratory incubation experiment was conducted in aerobic condition. N mineralization was investigated for nineteen organic amendments in sandy soil and clay soil at $20^{\circ}C$, $25^{\circ}C$, and $30^{\circ}C$. N mineralization was facilitated at higher temperature condition. Negative correlation was observed between mineralized N and C:N ratio of organic amendments. N mineralization process was slower in clay soil than in sandy soil and this was mainly due to the delayed nitrification. The single and the double exponential models were used to estimate N mineralization of the organic amendments. N mineralization potential $N_p$ and mineralization rate k were estimated in different temperature and soil conditions. Estimated $N_p$ ranged from 28.8 to 228.1 and k from 0.0066 to 0.6932. The double exponential model showed better prediction of N mineralization compared with the single exponential model, particularly for organic amendments with high C:N ratio. It is expected that the model parameters estimated based on the incubation experiment could be used to design nutrient management planning in environment-friendly agriculture.

• 한국항해항만학회지
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• 제47권4호
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• pp.220-230
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• 2023

항로표지는 안전한 항해를 위해 중요한 도구로 항로표지가 제공하는 다양한 정보는 매우 중요하다. 항로표지 정보를 효율적으로 활용하기 위한 표준화된 항로표지 정보에 대한 수요는 점차 증가하고 있으며, 이를 위해 국제항로표지협회에서는 항로표지 정보관리 표준인 S-201을 제정하고 회원국에게 적용을 권고하고 있다. 그러나 우리나라는 항로표지법에 따라 항로표지를 정의하고 그 정보를 관리하고 있기에 국제적인 표준인 S-201 표준에 따른 정의 및 정보관리의 필요성은 더욱 커지고 있다. 이에 본 연구에서는 국제항로표지협회의 권고에 따라 S-201 표준을 적용한 항로표지 정보 관리 방안을 제시하고자 하였다. 이를 위해 국제항로표지협회의 항로표지 정보 분류기준과 우리나라의 분류기준을 비교한 후, S-201 표준을 적용한 우리나라 항로표지 정보관리방안을 제시하였다. 이러한 연구 결과는 전세계적으로 정보 활용이 용이한 표준화된 디지털 항로표지 정보를 관리하는 데 중요한 기초자료로 활용될 것이라고 사료된다.

• 한국주거학회논문집
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• 제26권6호
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• pp.169-180
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• 2015

This study was carried out to offer direction to the Housing Management Support Center in terms of its key features and specific operational tasks. The research involved the property management office (n=35) and Resident Representatives of the apartment blocks (n=52). Advisory Services conducted a consumer survey, as well as a survey of expert interviews (n=15). Survey results were as follows: (1) the Managing Director and secretary residents were satisfied with the Diagnosis and Advisory services; (2) the administrative support services need to address housing issues, including a long-term repair plan and advice on using long-term repair reserves and "conflict resolution associated with public housing management"; and (3) there was a greater need for a "basic, common-sense Housing Management Information Base to provide services to the Resident Representatives of the apartment blocks". Based on the survey results, the main roles of the Housing Management Support Center are to act as a House of Commons Administrator to handle complaints with counseling, diagnosis and advice; to support the Resident Committees; to provide professional training, research, and investigation; to support community revitalization; to manage the business of guidance and inspection; to coordinate conflicts and disputes; to build a comprehensive source of information; and to build networks.

• Management Science and Financial Engineering
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• 제13권1호
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• pp.115-119
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• 2007

In [1], robust combinatorial optimization problem is introduced, where a positive integer $\Gamma$ is used to control the degree of robustness. The proposed algorithm needs solutions of n+1 nominal problems. In this paper, we show that the number of problems needed reduces to $n+1-\Gamma$.

• 컴퓨터교육학회논문지
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• 제9권1호
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• pp.61-70
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• 2006

e-Learning 교육에서 사실상 표준으로 인정받고 있는 ADL에서 제안한 SCORM 2004는 IMS Simple Sequencing을 S&N으로 통합함으로써 학습코스웨어의 학습과정을 구성하는 학습 객체간의 상호 관계를 다양하게 설계, 적용할 수 있게 하였다. 본 논문에서는 SCORM 2004 S&N과 교통신호메타포를 통하여 학습활동을 경험적으로 안내할 수 있는 웹기반 적응형 학습관리를 구현하고자 한다. 이 적응형 학습관리를 통해, 교수자는 동일한 학습콘텐츠를 재사용해서 다양한 학습전략을 구현한 학습코스웨어를 설계할 수 있고, 학습자는 학습상태와 평가를 실시간으로 제공받아 적응적 학습을 안내받을 수 있다.

• 한국조리학회지
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• 제23권7호
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• pp.159-166
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• 2017

This study was to investigate the quality characteristics of white pan bread with added Nurungji, scorched rice. Nurungji powder at the level of 5% (N5), 10% (N10), 15% (N15), 20% (N20) was mixed with flour to make the bread. The overall effects of nurungji powder in pan bread were examined by investigating fermentation rates, volume change, farinograph and TPA analysis, color and preference evaluation. A control showed the highest fermentation rate by 60 min, but there was no significant difference between all samples. Farinograph analysis showed that the water absorption rate was the lowest in control and increased with the addition of nurungji powder. In contrast, in dough development time, control was the shortest and the N20 was the longest. Dough stability showed the best with control, N20 showed the lowest value, and Dough weakness increased significantly as the amount of rice powder was increased. According to TPA analysis it had shown significant differences in hardness and chewiness in the bread with Nurungi. Volume and specific volume tended to decrease as the amount of rice powder added increased. Sensory evaluation showed that the texture of bread had the highest with control, and the overall preference such as color, taste, and flavor showed the best with N15.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.809-812
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• 2007

본 연구에서는 4D CAD의 객체정보에 자원 및 비용정보를 연동한 nD CAD시스템의 기능 구성방안을 제안하며, 제안된 기능들은 플랜트공사의 시각화된 방식 공정모델을 선정할 수 있는 시나리오기반 공정분석 모형으로 구성하였다. 제안된 모형은 다양한 공사관리 정보를 nD CAD기반으로 통합함으로써 최적 일정계획과 자원 및 비용정보의 효율적인 시각화 관리가 가능하다. 또한 최적 공정 시나리오 분석 및 분석정보의 공유 기능을 통해 발주자의 효율적인 의사결정 정보로 활용될 수 있다.

• 품질경영학회지
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• 제26권3호
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• pp.71-81
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• 1998

In reliability analysis, the time difference between the expected next failure time and the current failure time or the Mean Time Between Failure(MTBF) is of significant interest. Until recently, in reliability growth studies, the reciprocal of the intensity function at current failure time has been used as being equal to MTBE($t_n$)at the n-th failure time $t_n$. That is MTBF($t_n$)=l/$\lambda (t_n)$. However, such a relationship is only true for Homogeneous Poisson Process(HPP). Tsokos(1995) obtained the upper bound and lower bound for the MTBF($t_n$) and proposed an estimator for the MTBF($t_n$) as the mean of the two bounds. In this paper, we provide the estimator for the MTBF($t_n$) which does not depend on the value of the shape parameter. The result of the Monte Carlo simulation shows that the proposed estimator has better efficiency than Tsokos's estimator.

• 한국융합학회논문지
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• 제10권9호
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• pp.351-361
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• 2019

3개 대학 간호학과 4학년 간호관리 임상실습을 경험한 학생 289명을 대상으로 간호관리학 실습교육내용에 대한 중요도 인식 및 실제 실습경험에 대하여 비교 조사하였다. 연구결과 평가 항목에서 책임감, 대인관계, 신뢰, 의사소통, 도덕성 순으로 중요하게 인식하였다. 간호관리 실습교육내용의 중요도에서는 간호단위관리를 4.37(최대 5점)로 가장 중요하게 인식하였다. 실제로 임상에서 직접 경험할 수 있었던 항목은 간호단위관리(22.0%), 간호관리의 이해(20.7%), 인적자원관리(19.8%)가 빈도순으로 가장 높았으며 실제 경험을 전혀 못 한 항목으로는 마케팅(52.4%), 재무관리(44.0%)였다. 학생들이 인식한 실습내용의 중요도와 실제 실습경험을 한 항목 간에는 여전히 불일치가 나타나 표준화된 간호관리학 임상실습 프로토콜의 완성과 관리실습 전담 프리셉터 제도의 시행을 제언하고자 한다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 하계학술발표대회 논문집
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• pp.48-53
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• 2008

The performances of the building service equipment relay on the individual superintendent's share for the assessment of performance, fault detection, deterioration diagnosis of the building service equipment. A major use of building energy management system(BEMS) is for monitoring plant and building's energy consumption. National building management system (N-BMS) presented in this study links buildings into a network group in order to monitor and control the buildings. How to construct the N-BMS was considered to save energy resource and to conserve performance of building service equipment. The FEMIS, facility, energy/environmental management & information system, for building service offer management process integrated with BAS, FMS and EMS and so on.