• Journal of Nutrition and Health
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• 제28권1호
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• pp.61-70
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• 1995

This study was designed to : (a) develop the nutrition education program for preschool children (b) actually apply the program in the child-care center and evaluate its educational effects by a Non-equivalent control group design. Nutrition education program was developed on the basis of the conceptual framework which consisted of nutrition nutrients. food handling, life cycle and social.psychological needs. Also the program was devised to contribute children's motor, social, emotional and sensory developments. Nutrition achievement test(NAT) based on the table of specifications coinciding with the conceptual framework and was utilized to evaluate the nutrition education program. Subjects consisted of 42 preschool children, with 22 in control group and 20 in treatment group. All the subject completed a pretest and a posttest and the posttest means between control and treatment groups were compared. The control group had a score of 15.08 and the treatment group, 16.76 and the difference was not significant The treatment group's pre and post test means were 14.20 and 16.76, and showed the difference to be significant (p$\leq$0.05).

• KEPCO Journal on Electric Power and Energy
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• 제5권3호
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• pp.215-222
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• 2019

This work is experimental study of 10 kW specialized Combined Ocean Thermal Energy Conversion. We propose a C-OTEC technology that directly uses exhaust thermal energy from power station condensers to heat the working fluid (R134a), and tests the feasibility of such power station by designing, manufacturing, installing, and operating a 10 kW-pilot facility. Power generation status was monitored by using exhaust thermal energy from an existing power plant located on the east coast of the Korean peninsula, heat exchange with 300 kW of heat capacity, and a turbine, which can exceed enthalpy efficiency of 45%. Output of 8.5 kW at efficiency of 3.5% was monitored when the condenser temperature and seawater temperature are $29^{\circ}C$ and $7.5^{\circ}C$, respectively. The evaluation of the impact of large-capacity C-OTEC technology on power station confirmed the increased value of the technology on existing power generating equipment by improving output value and reducing hot waste water. Through the research result, the technical possibility of C-OTEC has been confirmed, and it is being conducted at 200 kW-class to gain economic feasibility. Based on the results, authors present an empirical study result on the 200 kW C-OTEC design and review the impact on power plant.

• Earthquakes and Structures
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• 제4권6호
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• pp.629-647
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• 2013

Loading protocols have been developed for quasi-static cyclic testing of structures and components. However, it is uncertain if protocols developed for conditions of intense ground shaking in regions of high seismicity would also be applicable to regions of low-moderate seismicity that are remote from the tectonic plate boundaries. This study presents a methodology for developing a quasi-static cyclic displacement loading protocol for experimental bracing evaluation of cold-formed steel stud shear walls. Simulations presented in the paper were based on conditions of moderate ground shaking (in Australia). The methodologies presented are generic in nature and can be applied to other regions of similar seismicity conditions (which include many parts of China, Korea, India and Malaysia). Numerous response time histories including both linear and nonlinear analyses have been generated for selected earthquake scenarios and site classes. Rain-flow cycle counting method has been used for determining the number of cycles at various ranges of normalized displacement amplitude. It is found that the number of displacement cycles of the loading protocol increases with increasing intensity of ground shaking (associated with a longer return period).

• 시스템엔지니어링학술지
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• 제17권1호
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• pp.107-113
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• 2021

Plant Configuration Management(CM) is an activity to maintain consistency of design requirements, physical configuration, facility configuration information throughout the life cycle of the plant by systematically managing changes that occur during the plant design and operation process. Conformity between information must be ensured not only in the design stage, but also in the case of design changes in the operation and maintenance stages, and thus a computer system capable of efficiently managing them is required. In particular, in consideration of an application to small and medium-sized domestic plants, a computer system that can support configuration management at a low cost is needed. Accordingly, in this study, a configuration management system has been developed to support the management of plant design information and change procedures in the operation stage of small and medium-sized plants. Here, a case for quantitatively evaluating the effectiveness of the developed system is described.

• 한국콘텐츠학회논문지
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• 제22권10호
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• pp.83-92
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• 2022

최근 유럽에서 보건의료 서비스에 대한 국가 재정 투입을 경제적 이해득실만으로 평가하는 것을 경계하는 건강투자 패러다임이 확산되고 있다. 이에 본 논문은 건강투자 패러다임의 핵심 모델과 정책 콘텐츠를 분석하고 그것의 함의를 도출하고자 한다. 이를 위해 건강투자 관련 WHO, EU(/EC), 유럽 국가들의 핵심 정책 자료, 연구 논문을 전통적 내용분석 방법을 통해 분석했다. 분석 결과, 유럽의 건강투자 패러다임은 기본 및 확장 모델을 중심으로 생애주기적 건강투자 원칙에 기반한 12가지 건강투자 정책과 투자의 사회적 혜택(SROI) 평가 방법 적용이 핵심 콘텐츠로 구성되어 있었다. 이상의 분석 결과와 건강투자 패러다임을 둘러싼 세 가지 논쟁(경제 성장 간 선순환 구조, 매튜 효과, 국가 역할 축소)은 포스트 코로나 시대 한국의 지속 가능한 보건의료시스템과 경제 발전 선순환 구조 형성을 위해 유럽의 건강투자 패러다임의 비판적 변용이 필요함을 시사한다.

• 방사성폐기물학회지
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• 제19권1호
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• pp.123-132
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• 2021

Radiological impact analyses were carried out for a near-surface radioactive waste repository at Gyeongju in South Korea. The RESRAD-ONSITE code was applied for the estimation of maximum exposure doses by considering various exposure pathways based on a land area of 2,500 ㎡ with a 0.15 m thick contamination zone. Typical influencing input parameters such as shield depth, shield materials' density, and shield erosion rate were examined for a sensitivity analysis. Then both residential farmer and industrial worker scenarios were used for the estimation of maximum exposure doses depending on exposure duration. The radiation dose evaluation results showed that 60Co, 137Cs, and 63Ni were major contributors to the total exposure dose compared with other radionuclides. Furthermore, the total exposure dose from ingestion (plant, meat, and milk) of the contaminated plants was more significant than those assessed for inhalation, with maximum values of 5.5×10-4 mSv·yr-1 for the plant ingestion. Thus the results of this study can be applied for determining near-surface radioactive waste repository conditions and providing quantitative analysis methods using RESRAD-ONSITE code for the safety assessment of disposing radioactive materials including decommissioning wastes to protect human health and the environment.

• Nuclear Engineering and Technology
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• 제53권12호
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• pp.3930-3943
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• 2021

To improve the capability of the SAS4A code, which simulates the initiating phase of core disruptive accidents for MOX-fueled Sodium-cooled Fast Reactors (SFRs), the authors have investigated in detail the physical phenomena under unprotected loss-of-flow (ULOF) conditions in a previous paper (Kawada and Suzuki, 2020) [1]. As the conclusion of the last article, fuel stub motion, in which the residual fuel pellets would move toward the core central region after fuel pin disruption, was identified as one of the key phenomena to be appropriately simulated for the initiating phase of ULOF. In the present paper, based on the analysis of the experimental data, the behaviors related to the stub motion were evaluated and quantified by the author from scratch. A simple model describing fuel stub motion, which was not modeled in the previous SAS4A code, was newly proposed. The applicability of the proposed model was validated through a series of analyses for the CABRI experiments, by which the stub motion would be represented with reasonable conservativeness for the reactivity evaluation of disrupted core.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2021년도 학술발표회
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• pp.290-290
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• 2021

급격한 도시화 및 기후변화로 인한 물순환체계가 왜곡됨에 따라 자연수재해 피해가 급증하고 있어 대응방안으로 저영향개발(Low Impact Development, LID) 기법이 대두되고 있다. LID 요소 기술 중 하나인 식생저류지는 도시 유역내에서 발생하는 유출수를 저류 및 침투하여 우수유출수와 비점오염원으로 인한 오염저감 효과를 지니고 있는 LID 요소이다. 본 연구에서는 식생저류지의 우수유출수의 정량적 저감효과를 분석하기 위해 수문해석 프로그램인 K-LIDM(Korea Low Impact Development Model)을 이용하여 유역 내 식생저류지 배열과 저류용량에 따른 유출저감 효과를 분석하였다. 강우시나리오는 부산지점의 10년, 30년 발생빈도에 대하여 60분, 120분, 180분 확률강우시나리오를 선정하여 적용하였다. 모델링 분석결과 식생저류지 배치에 따라 5 ~ 15 % 이상의 유출저감효과가 산정되었으며, 식생저류지 저류용량에 따라 20 % 이상의 유출저감 효과가 산정되었다. 첨두유출 도달시간은 1.13 ~ 1.86배를 지연하는 결과가 산정되었다. 결과를 통해 식생저류지의 배열과 저류용량에 따라 유출량 저감효과와 첨두유출 도달시간에 영향을 미침을 알 수 있었다. 추후에 다른 매개변수인 식생저류지의 저류깊이, 지반의 침투능 및 유출부의 직경 등 여러 매개변수들을 고려한 연구를 수행한다면 식생저류지의 정량적 물순환 평가가 수행될것으로 사료된다.

• Asia pacific journal of information systems
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• 제29권3호
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• pp.503-523
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• 2019

Many cities in the world have increased initiative to realize smart tourism. There are unexplored challenges for the people which lead and manage smart tourism projects and realize its value in tourism (we call them as 'Smart tourism initiatives'), such as orchestrating of tourism complexity, developing and sharing tourism strategy, sustaining tourism projects and innovation. Concerning these challenges, we aim to design a holistic capability maturity model for sustainable and smart tourism governance enabling sustainable tourism innovations via tackling the challenges above. We adopted Dynamic capability theory as a theoretical lens and introduced Design science research methodology in order to develop a new capability maturity governance model as a design artifact. As a result of the study, we could synthesize findings from iterations of the design research cycle based on the IT Capability Maturity Model. Our result proposes a potential capability maturity model supporting effective communication and strategic alignment for the initiatives with illuminating future paths with evaluation methods on tourism capabilities for the initiatives. Throughout this study, we contribute to the body of knowledge as well as practice by proposing a new tourism capability governance model.

• 치위생과학회지
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• 제13권2호
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• pp.151-157
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• 2013

본 연구는 어린이집에서 유아들이 사용하고 있는 칫솔의 칫솔마모 상태를 평가하여, 유아의 칫솔 교체시기에 대한 적절한 기준을 확립하는 데 도움을 주고자 2012년 9월 20일부터 11월 6일까지 1,022개의 칫솔을 수거한 뒤 칫솔마모도 및 마모율을 평가하여 다음과 같은 결과를 얻었다. 1. 칫솔마모도 측정 결과, 조사 대상 칫솔 중 48.5%가 0.400 이상의 마모도를 보였고, 평균 마모도는 $0.421{\pm}0.239$로 조사되어, 전체적으로 높은 칫솔마모도를 보였다. 2. 칫솔마모율 측정 결과, 마모율 2점과 3점이 차지하는 비율이 70.4%였으며, 평균 마모율은 $1.936{\pm}0.848$로 나타나 전체적으로 높은 칫솔마모율을 보였다. 3. 칫솔관리 실태에 대한 조사 결과, 평균 칫솔 교환주기는 5~8주가 63.9%로 가장 많았고, 칫솔 교환방법은 칫솔모의 마모 상태에 따라 교체한다는 응답이 52.7%로 조사되었다. 이상의 결과를 바탕으로, 유아들의 칫솔에 대한 관리가 적절히 이루어질 수 있도록 보육을 담당하는 교사 및 보호자에 대한 지도가 필요할 것이며, 유아의 올바른 칫솔 교체주기에 대한 명확한 기준 확립과 효율적인 구강보건교육 방안도 마련되어야 할 것이다.