• 한국수소및신에너지학회논문집
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• 제33권6호
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• pp.643-659
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• 2022

For the economic analysis of fuel cells, levelized cost of electricity was calculated according to the type, capacity, and annual production of the fuel cells. The cost of every component was calculated through the system component breakdown. The direct cost of the system included stack cost, component cost, assembly, test, and conditioning cost, and profit markup cost were added. The effect of capacity and annual production was analyzed by fuel cell type. Sensitivity analysis was performed according to stack life, capital cost, project period, and fuel cost. As a result, it was derived how much the economic efficiency of the fuel cell improves as the capacity increases and the annual production increases.

• 가족자원경영과 정책
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• 제25권4호
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• pp.71-86
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• 2021

본 연구는 기혼 남성의 가사노동참여 양상의 변화를 파악하기 위해 남성의 가사노동시간의 영향 요인을 세대별로 파악하는 목적으로 한다. 이를 위해 기혼남성을 베이비붐세대, X세대, Y세대로 구분하고, 각 세대별 가사노동참여 요인을 가사노동 참여가설을 적용시켜 분석해 보았다. 자료는 통계청 '2019년 생활시간조사' 원자료를 사용하였다. 기혼남성의 가사노동시간에 영향을 미치는 요인을 분석하기 위해 다항로지스틱 분석을 실시하였다. 분석결과 베이비붐세대 기혼남성의 가사노동시간은 경제적 효율성가설과 성역할태도가설, 요구반응가능성가설에 의해 설명이 가능하고, X세대 기혼남성의 가사노동시간은 경제적 효율성가설, 성역할태도가설, 시간가용성가설, 요구반응가능성가설 모두에 의해 설명이 가능하였다. 반면, Y세대 기혼남성의 가사노동시간은 시간가용성가설과 요구반응가능성가설에 의해서만 설명이 가능하였다. 세대별로 가사노동참여의 동인이 다르다는 사실은 남성 대상 일가정양립지원 정책수립에 있어 세대별 특성을 고려해야 한다는 점을 시사해준다.

• Wind and Structures
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• 제21권1호
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• pp.63-84
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• 2015

The shape of a tall building has significant impact on wind force generation and wind-induced dynamic response. To study the effect of recessed cavities, wind excitations on a wind-tunnel model of an H-section tall building were compared with those on a square-section building model. Characteristics of the fluctuating wind pressures on the side faces of the two tall buildings and their role in the generation of crosswind forces on the buildings were investigated with the space-time statistical tool of proper orthogonal decomposition (POD). This paper also compares the use of different pressure data sets for POD analysis in situations where pressures on two different surfaces are responsible for the generation of a wind force. The first POD mode is found to dominate the generation of crosswind excitation on the buildings.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.355-357
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• 2006

A study of the photovoltaic generation system tend to concentrate its importance on specific filed such as analysis of photovoltaic characteristic, improvement of a inverter, and controller. In this paper, a practical facility of the photovoltaic generation system and connection of its organization are presnted with process of 1.2kW prototype. From the results of monitoring system which is for reliability and analysis of the photovoltaic generation system, stability of the system was confirmed.

• 대한가정학회지
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• 제37권4호
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• pp.111-124
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• 1999

The purpose of this study was to investigate the effect of generation on consciousness toward wedding ritual and to compare the difference in their consciousness between the young and the old. Data were obtained from 489 individuals living in Seoul. OLS regression analysis was used to identify the effect of generation on consciousness toward wedding ritual. The effect of generation was significant in the consciousness of wedding procedures, while it was not significant in the consciousness of wedding expenditures, holding other factors constant. [t was also found that procedure-important style was associated with more expenditures on wedding. The findings of this study suggested that the materialism had an important effect on the consciousness of wedding procedures for both generations. Understanding these factors is useful for family resource management professionals and educators who develop educational programs to build desirable wedding culture in Korea.

• 한국가스학회지
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• 제10권4호
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• pp.11-16
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• 2006

본 논문에서는 현재 국제에너지기구에서 국가 에너지시스템분석에 공식적으로 사용되고 있는 시장분배모형(MARKAL: MARKet ALlocation) 모형을 이용하여 국내 발전부문의 온실가스 배출감축 잠재량평가를 위한 분석을 실시하였다. 모형 운영에 필요한 입력자료를 구축하고 4개의 시나리오를 설계하여 2040년까지의 발전기술의 구성, 특히 가스발전의 온실가스 감축에 대한 역할을 다양하게 분석하였다.

• 대한기계학회논문집A
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• 제20권2호
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• pp.553-563
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• 1996

An algorithm for automatic mesh generation of two-dimensional arbitrary planar domain is proposed by using Delaunay triangulation algorithm. An efficient algorithm is proposed for the construction of Delaunay triangulation algorithm over convex planar domain. From the definition of boundary, boundary nodes are first defined and then interior nodes are generated ensuring the Delaunay property. These interior nodes and the boundary nodes are then linked up together to produce a valid triangular mesh for any finite element analysis. Through the various example, it is found that high-quality triangular element meshes are obtained by Delaunay algorithm, showing the robustness of the current method. The proposed mesh generation scheme has been extended to automatic remeshing, which is applicable to FE analysis including large deformation and large distortion of elements.

• 대한산업공학회지
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• 제27권4호
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• pp.337-344
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• 2001

As cost invested in developing the specified technology is increasing, investors are paying more attention to cost to benefit analysis (CBA). One of the basic elements of CBA for new technological development is the diffusion pattern of demand of such technology. Many studies of technology evaluation have adopted a single generation model to simulate the diffusion pattern of demand. This approach, however, considers the diffusion of the new technology itself, not taking into account a newer generation that can replace the one just invented. In this paper, we show how a multi-generation technology diffusion model can be applied for more accurate CBA for information technology. Monte Carlo simulation is performed to find influential factors on the CBA of a Cybernetic Building System.

• 한국콘텐츠학회논문지
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• 제9권5호
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• pp.277-283
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• 2009

국제결혼이 문제가 되는 경우는 대부분 2세들이 사화와의 충돌이나 갈등을 야기 시키기 때문이므로 이 문제가 부각되기 전에 이에 대한 연구와 준비가 필요하다. 이에 본 연구는 다문화(국제결혼) 가정 자녀들의 보육시설에서의 행동특성을 분석하여 언어, 정서, 또래관계, 집중력 등의 발달 수준이 일반 가정의 어린이들과 어떤 차이가 있는지를 분석하였으며, 그 결과에 의하여 다문화가정 자녀의 보육지도를 위한 교수 전략을 개발하였다.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.136-140
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• 2001

The 3rd generation mobile telecommunication fields are being standardized and developed in two parts, 3GPP and 3GPP2. These two parts have established each Network Architecture Models to achieve the goals basically required in the 3rd generation and to make it progress to IP network in the future. To achieve these goals many system architectures are proposed. Not only functional aspects but also performance aspects are considered as major factors. This paper proposes a new method of performance evaluation modeling and simulation that improved the existing way. The method proposed in this paper is Aspect oriented logical performance analysis Modeling and Simulation method. This proposed method is expected to improve efficiency of performance analysis modeling and simulation on the 3rd generation mobile telecommunication system.