• 콘크리트학회논문집
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• 제18권5호
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• pp.639-648
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• 2006

전단 경간비를 실험 변수로 하여 철근콘크리트 보에 대한 1방향 단조재하의 전단실험을 실시하였다. 실험에 병행하여 실시한 유한요소 해석과 실험결과를 기초로 전단 경간비가 작은 보의 전단내력을 구하는 해석 방법과 주근의 부착작용의 효과를 고려한 crooked main strut과 sub strut으로 구성되는 새로운 매크로 모델을 제안하였다. 그 결과 전단 경간비가 0.75 이하에서 본 연구에서 제안한 매크로 모델이 형성 가능하다는 것과 콘크리트 압축강도의 유효계수를 0.75로 하였을 때 실험 결과와 해석 결과가 가장 잘 일치함을 확인하였다.

• 한국의류학회지
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• 제28권1호
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• pp.1-11
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• 2004

Cultural value is widely accepted as the crucial concept in understanding consumer behavior: cultural values influence consumption values, which determine choices of consuming everyday products and services. The objectives of this study were to (a) identify the difference between cultural and consumption values in the Korean fashion industry and (b) to explain the difference using the existing theories introducing fashion system, which are Solomon(2002)'s cultural production model in marketing area and Hamilton(1997)'s fashion system arbiter in clothing area. The qualitative data used to identify cultural values were 160 apparel advertisements listed in a fashion magazine issued in 2002. Utilizing the convenient sampling method, the quantitative data used to identify consumption values were gathered by surveying female university students aged over 20 living in the Seoul metropolitan area. Of 369 returned questionnaires, 255 were used in factor analysis and paired t-test. Cultural value ignored functional aspect of apparel while it was one of the most salient factors for consumption value. With respect to success and fashion orientation factors, cultural value highly appreciated them while they were the least considered factors for consumption value. These implicate that the Korean fashion industry can be explained by Hamilton's macro-level cultural and fashion system arbiters and cultural production model as well. Introducing macro-level perspectives about fashion system, this study encourages researchers to expand their research spectrum from micro-level consumers to macro-level fashion industry, which has long been neglected by the fashion marketing researchers in Korea.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권4호
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• pp.1481-1500
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• 2016

Device-to-Device (D2D) communication underlaying macro-small cell networks, as one of the promising technologies in the era of 5G, is able to improve spectral efficiency and increase system capacity. In this paper, we model the cross- and co-tier D2D communications in two-tier macro-small cell networks. To avoid the complicated interference for cross-tier D2D, we propose a mode selection scheme with a dedicated resource sharing strategy. For co-tier D2D, we formulate a joint optimization problem of power control and resource reuse with the aim of maximizing the overall outage capacity. To solve this non-convex optimization problem, we devise a heuristic algorithm to obtain a suboptimal solution and reduce the computational complexity. System-level simulations demonstrate the effectiveness of the proposed method, which can provide enhanced system performance and guarantee the quality-of-service (QoS) of all devices in two-tier macro-small cell networks. In addition, our study reveals the high potential of introducing cross- and co-tier D2D in small cell networks: i) cross-tier D2D obtains better performance at low and medium small cell densities than co-tier D2D, and ii) co-tier D2D achieves a steady performance improvement with the increase of small cell density.

• 산업융합연구
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• 제19권4호
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• pp.85-93
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• 2021

본 연구의 목적은 청소년 운동선수들의 사회적지지, 자아존중감, 행복감 사이의 관계를 검증하는 것이다. 연구대상은 청소년 운동선수 191명과 비교를 위한 일반고등학생 196명으로 총 387명이었으며, 검사지가 활용되었고, SPSS 22.0과 Process Macro를 적용하여 자료를 분석하였다. 도출된 연구결과를 통한 주요 결론은 다음과 같다. 첫째, 청소년 운동선수들은 일반고등학교 학생들보나 사회적지지를 높게 인식하고 있었고 자아존중감과 행복감도 모두 높게 인식하고 있는 것으로 나타났다. 둘째, 사회적지지는 자아존중감에 정적으로 유의한 직접영향이 있었다. 셋째, 자아존중감은 행복감에 정적으로 유의한 직접영향이 있었다. 넷째, 사회적지지는 행복감에 직접적인 영향은 없었고 자아존중감을 매개로 하여 행복감에 간접영향을 주는 것으로 나타났다. 이를 바탕으로 추후 학생들의 행복감을 증진시키기 위한 구체적인 방안마련이 시급하다고 사료된다.

• Communications for Statistical Applications and Methods
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• 제9권3호
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• pp.675-682
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• 2002

In this study, we develop the statistical analysis program for genetic analysis of diallel crosses data by SAS/MACRO, SAS/IML. Genetic analysis is to estimate of genetics parameters and heredity with reciprocal cross and without reciprocal cross. Statistical analysis program solve the problem of the difficulties on the data analysis in field denetics and breeding Therefore the user whoever want to analysis of data on genetics and breeding easily conduct the work saving time and suffering.

• KEPCO Journal on Electric Power and Energy
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• 제7권1호
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• pp.125-128
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• 2021

This paper presents the root cause failure analysis of the circulating water pump in the 560 MW thermal power plant. A fractured austenitic stainless-steel shaft operated for 24 years was examined. Fracture morphology was investigated by micro and macro-fractographic analysis. The metallurgical analyses including chemical analysis, metallography and hardness testing were performed. The analysis reveals that the pump shaft was fractured due to the reverse bending load with combination of rotating bending load. Corrective actions for plant operator was recommended based on the analysis.

• 수산경영론집
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• 제14권1호
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• pp.1-18
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• 1983

This study has examined the principle of rationalization as a guiding principle in fisheries management. Generally speaking, the guiding principle of business management is the principle of profitability which is oriented to the profit maximization, but it has been insisted by Dr, Mohri that the principle of profitability should be translated into the maximization of ratio of added value on gross capital, According to Dr. Durcker, added value (contributed value) can be used to analyze productivity only if the allocation of costs which together make up the figures is economically meaningful. Therefore, the rationalization of fisheries management can be measured as a result of economic allocation of costs, The analysis of economic allocation of costs divides into macro-allocation of costs and micro-allocation of costs. In fisheries management, the former makes use of the analysis of break-even point, and the latter analyzes the efficiency of individual cost respectively and the state of division of costs which allocate into above-the-line expenses of lay system and management's burden expenses. In macro-allocation of costs, it is advisable that fixed costs be converted into variable costs. This is characteristically possible in fisheries management, because wages belong to variable costs in fisheries management while they are regarde as fixed cost in the other industires. Because we could find that all costs would belong to above-the-line expenses, in micro-allocation analysis, the very costs which are directly related to fisherman's poduction activity should be classified into above-the-line expenses, and the other costs into management's burden expenses. This is a central problem in the rationalization of fisheries management.

• 대한간호학회지
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• 제45권5호
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• pp.752-760
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• 2015

Purpose: The purpose of this study was to examine the moderating mediation effect of self-esteem on the relations among adolescents' abuse experiences, depression and anxiety, and suicidal ideation. Methods: The participants were selected using secondary data from a population in the 2012 Korea Welfare Panel Survey (KOWEPS). Data were analyzed using SPSS 15.0 and SPSS Macro, and bootstrapping and hierarchical regression analysis were performed to analyze multilevel models. Results: First, analysis of the mediating effect of the adolescents' abuse showed that there was significant mediating influence between suicidal ideation and depression and anxiety. Second, hierarchical regression analysis showed that self-esteem had significant mediation effect on depression and anxiety in adolescents' suicidal ideation. Third, SPSS Macro showed that self-esteem also significantly moderated the mediating effect of adolescents' abuse experiences on suicidal ideation through depression and anxiety. Conclusion: The study results suggest that in future research on adolescent's abuse experience, the risk of suicide in depression and anxiety scores should be selected through evaluation of each individual's self-esteem scale. Coping strategies with immediate early intervention should be suggested.

• Structural Engineering and Mechanics
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• 제59권2호
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• pp.291-312
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• 2016

Seismic performance evaluation of shear wall is essential as it is the major lateral load resisting member of a structure. The ultimate load and ultimate drift of the shear wall are the two most important parameters which need to be assessed experimentally and verified analytically. This paper comprises the results of monotonic tests, quasi-static cyclic tests and shake-table tests carried out on a midrise shear wall. The shear wall considered for the study is 1:5 scaled model of the shear wall of the internal structure of a reactor building. The analytical simulation of these tests is carried out using micro and macro modeling of the shear wall. This paper mainly consists of modification in the hysteretic macro model, developed for RC structural walls by Lestuzzi and Badoux in 2003. This modification is made by considering the stiffness degradation effect observed from the tests carried out and this modified model is then used for nonlinear dynamic analysis of the shear wall. The outcome of the paper gives the variation of the capacity, the failure patterns and the performance levels of the shear walls in all three types of tests. The change in the stiffness and the damping of the wall due to increased damage and cracking when subjected to seismic excitation is also highlighted in the paper.

• 한국콘텐츠학회논문지
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• 제20권7호
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• pp.491-502
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• 2020

본 연구는 중년의 노화불안이 심리적 안녕감에 영향을 미치는 과정에서 인지적 유연성과 주관적 경제수준의 조절된 매개효과를 확인하고자 하였다. 이를 위해 40세~64세의 성인 317(남159명, 여158명)명을 대상으로 온라인설문지를 실시하였으며, 설문기간은 2017년 9월 3일부터 9월 28일까지였다. SPSS 21.0 및 SPSS Macro를 사용하여 상관분석, 회귀분석, 유의성 검정을 하였다. 연구 결과, 첫째, 상관 분석 결과 노화불안, 인지적 유연성, 주관적 경제수준, 심리적 안녕감 간의 유의한 상관이 나타났다. 둘째, 중년의 노화불안과 심리적 안녕감의 관계에서 인지적 유연성이 유의한 부분매개효과(β = .530, p < .001)를 보이는 것으로 나타났다. 셋째, 인지적 유연성과 심리적 안녕감의 관계에서 주관적 경제수준의 조절효과(β = .080, 𝜟R² =.006, p <.05)가 유의한 것으로 나타났다. 넷째, SPSS Macro를 통한 검증 결과, 노화불안과 심리적 안녕감의 관계에서 인지적 유연성과 주관적 경제수준의 조절된 매개효과가 검증되었다. 마지막으로 본 연구의 의의와 제한점, 후속연구에 대한 제언을 논의하였다.