• 한국자동차공학회논문집
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• 제11권2호
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• pp.104-110
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• 2003

As exhaust emission standards are more stringent, higher conversion efficiency of automotive catalytic converter is required. In addition, catalytic converter is deteriorated during mileage accumulation of vehicle. Therefore the specification of catalytic converter should be decided in consideration of emission standards and deterioration. Because the decision of the specification of catalytic converter is required at the beginning of vehicle development procedure, it is important and necessary to fix the target values of green vehicle exhaust emissions. To do this, a linear regression analysis was done with in-use exhaust emissions data of 5 different kinds of vehicle that received US94 emission standards certification, and data handling methods including some statistical estimation were proposed. As a result, the fixed target values of NMHC, CO, NOx of green vehicle against US94 emission standards were 0.079, 0.83, 0.116, respectively. And expected in-use deterioration factor of NMHC, CO, NOx were 1.75, 2.02, 1.38, respectively. And also it was blown that even if failure rate is 30% after 80,000km driven, it might be sufficiently safe from emission failure confirmatory test of Korea. It is hopeful to make a database of in-use emissions to increase the confidence in correctness of the calculated target values.

• 한국도로학회논문집
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• 제18권2호
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• pp.51-60
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• 2016

PURPOSES : The applicability of the mechanics-based similarity concept (suggested by Feng et al.) for determining scaled variables, including length and load, via laboratory-scale tests and discrete element analysis, was evaluated. METHODS: Several studies on the similarity concept were reviewed. The exact scaling approach, a similarity concept described by Feng, was applied in order to determine an analytical solution of a free-falling ball. This solution can be considered one of the simplest conditions for discrete element analysis. RESULTS : The results revealed that 1) the exact scaling approach can be used to determine the scale of variables in laboratory tests and numerical analysis, 2) applying only a scale factor, via the exact scaling approach, is inadequate for the error-free replacement of small particles by large ones during discrete element analysis, 3) the level of continuity of flowable materials such as SCC and cement mortar seems to be an important criterion for evaluating the applicability of the similarity concept, and 4) additional conditions, such as the kinetics of particle, contact model, and geometry, must be taken into consideration to achieve the maximum radius of replacement particles during discrete element analysis. CONCLUSIONS : The concept of similarity is a convenient tool to evaluate the correspondence of scaled laboratory test or numerical analysis to physical condition. However, to achieve excellent correspondence, additional factors, such as the kinetics of particles, contact model, and geometry, must be taken into consideration.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2008년도 학술대회 2부
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• pp.18-23
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• 2008

과거의 전통적인 마케팅 방법론들과 그 이론을 믿어온 기업의 경영자들은 소비자의 사고 과정을 합리적이고 이성적인 행위라고 규정하였다. 하지만 최근 발표되는 다양한 연구결과들에 의하면 소비자의 사고 과정은 무의식적 영역에서 감성에 의해 일어나는 행위에 가깝다. 이러한 소비자의 사고 과정은 제품을 구매하는 과정, 즉 소비자의 구매 결정 과정에도 영향을 미친다. 소비지는 제품 구매 시, 가격, 성능, 품질 등의 다양한 이성적 기준에 의해 제품을 판단하지만 결국 구매는 제품에 대한 좋고 나쁨의 감성적 기준에 의해 결정된다. 브랜드 이미지는 소비자의 무의식적 영역에서 형성된 브랜드에 대한 심상으로 감성적 가치를 갖으며 소비자의 제품 구매에 영향을 미친다. 따라서 긍정적인 감성의 결합을 통한 제품 개발은 감성적인 제품 이미지의 구축으로 연결되는 제품의 판매와 브랜드 이미지 강화의 중요한 요소이다. 이러한 관점에서 본 연구는 브랜드 이미지 강화의 한 요인으로써 효율적이고 감성적인 의사 전달 방식인 스토리텔링을 적용한 제품 개발 프로세스의 제안을 목표로 하여 내용을 구성하였다.

• Nuclear Engineering and Technology
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• 제49권4호
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• pp.838-849
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• 2017

This paper proposes penalty factor equations that take into consideration the weld strength over-match given in the classified form similar to the revised equations presented in the Code Case N-779 via cyclic elastic-plastic finite element analysis. It was found that the $K_e$ analysis data reflecting elastic follow-up can be consolidated by normalizing the primary-plus-secondary stress intensity ranges excluding the nonlinear thermal stress intensity component, $S_n$ to over-match degree of yield strength, $M_F$. For the effect of over-match on $K_n{\times}K_{\nu}$, dispersion of the $K_n{\times}K_{\nu}$ analysis data can be sharply reduced by dividing total stress intensity range, excluding local thermal stresses, $S_{p-lt}$ by $M_F$. Finally, the proposed equations were applied to the weld between the safe end and the piping of a pressurizer surge nozzle in pressurized water reactors in order to calculate a cumulative usage factor. The cumulative usage factor was then compared with those derived by the previous $K_e$ factor equations. The result shows that application of the proposed equations can significantly reduce conservatism of fatigue assessment using the previous $K_e$ factor equations.

• 영재교육연구
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• 제26권1호
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• pp.161-185
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• 2016

본 연구는 초등과학영재학생의 인성, 생애목표, 행복감 특성을 파악하고, 각 변인 간의 관련성을 바탕으로 행복감에 미치는 영향력을 살펴보기 위한 것이다. 이를 위해, 독립표본 t-검증, 다중회귀분석과 위계적 회귀분석을 실시하였다. 연구 결과는 다음과 같다. 첫째, 초등과학영재학생이 일반학생보다 높은 수준의 책임, 윤리, 긍정적 자기이해 인성특성과 기여목표를 보이는 반면, 물질목표와 이미지목표는 상대적으로 낮았다. 둘째, 인성, 생애목표와 행복감은 상관관계가 있는 것으로 나타났다. 셋째, 배려/봉사의 인성특성을 보이는 학생이 내재적 목표를 갖는 것으로 나타났다. 반면, 배려/봉사가 높고, 공감이 낮을수록 외재적 목표를 갖는 것으로 나타났다. 배려/봉사와 긍정적 자기이해가 높을수록, 자기조절은 낮을수록 행복감이 높은 것으로 나타났다. 넷째, 초등과학영재학생은 기여목표, 관계목표를 가질수록 행복감이 높은 반면, 성장목표, 물질목표를 가질수록 행복감이 낮은 것으로 나타났다. 다섯째, 인성은 생애목표보다 행복감에 미치는 영향을 상대적으로 더 잘 설명하는 변인이었다. 본 연구의 결과는 초등 영재들의 행복감을 높이고, 동시에 영재의 품성 개발을 위한 인성 및 상담교육 방안을 모색하는 데 기여할 것이다.

• 한국의류학회지
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• 제30권12호
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• pp.1778-1787
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• 2006

질적인 삶을 추구하는 노년 여성이 증가하고, 아름답게 가꾸고 싶어하는 미적 욕구가 커짐에 따라 화장품 산업의 급성장이 예견되고 있다. 이러한 시점에서 본 연구는 노년 여성들의 웰빙 성향과 외모관심도에 대하여 알아보고, 이들 변인이 화장품 구매의도와 브랜드 충성도에 미치는 영향을 알아보고자 하였다. 이를 위하여 서울 경기도에 거주하는 만 55세 이상의 여성 209명을 대상으로 설문분석을 실시하였고, SPSS를 이용하여 빈도분석, 요인분석, 신뢰도분석, 회귀분석을 실시하였다. 그 결과 노년 여성의 웰빙 성향은 친환경요인, 생활만족요인, 신체건강요인으로 나뉘어졌고, 외모관심도는 외모중시요인, 외모관리요인, 피부관리요인으로 구분되었다 이들 요인 중 웰빙 성향의 신체건강요인과 외모관심도의 외모중시요인이 노년 여성의 화장품 구매의도에 영향을 미치고, 화장품 구매 의도는 브랜드 충성도에 영향을 미치는 것으로 나타났다. 이와 같이, 노년 여성들이 신체건강 및 외모를 중시할수록 화장품 구매의도 및 브랜드 충성도가 높아졌으므로, 이들의 웰빙 성향과 외모관심도는 브랜드 충성도를 유발하는 요인이라 할 수 있다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 춘계 학술발표회 논문집
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• pp.129-136
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• 2005

The deterministic analysis method has generally used to evaluate the slope stability and it evaluates the slope stability with decision value that is a representative value of design variables. However, one of disadvantages in the deterministic approach is there is not able to consider the uncertainty of soil strength properties, even though it is the biggest influential parameter of the slope stability. On the other hand, the limit state design(LSD) can take a consideration of uncertainties and computes both the reliability index and the probability of failure. LSD method is capable of overcoming the disadvantages of deterministic method and evaluating the slope stability more reliably. In this study, both the mean value and standard deviation of the internal land's representative soil strength properties applied to process the LSD method. The major purpose of this study is to gauge the general applicability of the limit state design in soil slope and to weigh the comparative validity of the proposed partial safety factor. In order to reach the aim of this study, the partial safety factor and resistance factor which totally satisfied the slope's overall safety factor were calculated by the load and resistance safety factor design (LRFD).

• 대한가정학회지
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• 제44권9호
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• pp.51-59
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• 2006

The role of consumer self-confidence is important in consumer's purchase decision. Nevertheless, the use of self-esteem measures might cause misinformation in the specific situation of the marketing-related point of view. In this study, consumer self-confidence was measured by marketing oriented tools to clarify the dimensions of consumer self-confidence while the influence of consumer self-confidence on clothing satisfaction was also investigated. A total of 325 questionnaires were collected by surveying university students in Seoul and the surrounding metropolitan area using convenient sampling. The data were analysed by factor analysis, ANOVA, t-test, and regression by using SPSSWIN program. The findings of the study were as fellows. First, the consumer self-confidence was composed of 6 sub-scales: information acquisition, personal outcomes decision making, social outcomes decision making, consideration-set formation, persuasion knowledge, and marketplace interfaces. Second, female subjects rated higher on consumer self-confidence than male subjects did in social outcomes decision making and consideration-set formation. Third, higher income was correlated with higher social outcomes decision making and consideration-set formation. Finally, clothing satisfaction was influenced by personal outcomes decision making and information acquisition.

• 기본간호학회지
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• 제7권3호
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• pp.479-488
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• 2000

The purpose of this study was to explore the personality and eating behavior among adult women. The subjects for the study were 237 adult women, who live in Seoul. The survey instruments were to develop for personality and eating behavior. Data were collected between November 6 and November 27 in 2000 and analyzed using the SPSS program. The result of this study are as fellows: 1. Six factors (perfection, emotion, autonomy, consideration for other, evaluate from other, dependency) emerged from personality, and these contributed 55.29% of the variance in the total score. 2. Three factors(craving, food intake according to emotion, eating habit) emerged from eating behavior, and these contributed 49.23% of the variance in the total score. 3 There were significant correlation between personality and eating behavior(r=.32, p=.00). 4. In the relationships between craving and personality, perfection, emotion, autonomy, consideration for other, evaluate from other, dependency showed a statistically significant correlation. 5. In the relationships between food intake according to emotion and personality, perfection, evaluate from other, dependency showed a statistically significant correlation. 6. In the relationships between eating habit and personality, perfection, autonomy, consideration for other, evaluate from other, dependency showed a statistically significant correlation. This study suggest that perfection, evaluation from other, dependency dimension of personality may be important factor for regulation of eating behavior.

• 수산해양교육연구
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• 제25권2호
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• pp.526-537
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• 2013

The purpose of this study was to provide basic data needed for analyzing the factors needed for students' positive participation in physical education class and developing the leadership skills needed for effective class guidance by analyzing what relationship there exists between a physical education teacher-exercised transformational leadership and students' trust in physical education teachers and class satisfaction; thus, this study drew the conclusions as follows: First, in the relations between a physical education teacher-exercised transformational leadership and students' trust, it was found that a physical education teacher's charisma and intellectual stimulus had a positive influence on high school students. Second, it was found that a physical education teacher's charisma and individual consideration had a positive influence on a physical education teacher-exercised transformational leadership and the subordinate factor in class satisfaction-a sense of accomplishment while individual consideration and intellectual stimulus were found to have a positive influence on evaluation. Third, as for the trust in a physical education teacher and class satisfaction, the trust was found to have a positive influence on both a sense of accomplishment and evaluation.