• 동아시아식생활학회지
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• 제19권3호
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• pp.311-315
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• 2009

The purpose of this research was to discern how consumers experience the images of sensibility vocabularies for atmosphere of family restaurants and to suggest the applications for restaurant managers and marketers by presenting words that appeal to consumers' needs and emotions. More reliable results were obtained by researching the sensibility vocabularies using free association and stimulus methods. Extracting 8 sensibility words among 28 vocabularies, we constructed the relation of evaluation concepts by using a structural equation model. Overall, the structural equation model, which is a method to select reliable sensibility vocabularies can increase the sensitivity of the model.

• 조명전기설비학회논문지
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• 제19권2호
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• pp.94-99
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• 2005

본 논문은 수직온도분포 분석을 이용한 몰드변압기 권선의 건전성 평가 방법을 제시하고 있다. 이 방법은 건전 시료의 온도 분포와 가속열화실험에 의해 층간 단락된 고장시료의 온도 분포 비교를 통해 얻어진 결과이다. 분석에 활용된 온도분포는 적외선 열화상 시스템에 의해 취득되었고, 가속 열화시험에는 Arrhenius 방정식이 적용되었다. 제안된 방법은 몰드변압기 고장을 검출하는데 유용할 것이다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1997년도 봄 학술발표회 논문집
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• pp.413-421
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• 1997

This paper presents the comparison and evaluation of the existing test results and empirical formulas of high-strength concrete available in the literature for various types of models to describe the stress-strain relationship. The range of concrete compressive strength taken into account in this study was 400 to 1200kg/㎠ and the comprehensive assessment of each linearly varying ascending part and brittle type of descending one of each model was carried out. The results show that the fixed curve equation seems to be recommended to well describe the ascending part and so does Fafitis' exponential equation for the descending part in the stress-strain relationship of the high and ultra high-strength concrete.

• 한국산학기술학회논문지
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• 제8권5호
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• pp.1166-1172
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• 2007

비굴착 보수 공법에 의한 파이프 보강은 전체 파손관과 부분 파손관으로 구분되어 정의된다. 부분 파손된 관내에 사용된 라이너 관은 수압만이 작용되며, 상재 하중 및 토압, 지하수에 의한 압력에 대해서 기존의 관이 모두 저항하게 된다. 본 연구는 기존에 사용되고 있는 보강튜브경화공법 설계식에 대한 라이너 보수관 적용성을 평가하여 적용가능함을 확인하였다. 또한, 개발된 말단부 처리 공법이 적용된 라이너의 안전성을 유한요소해석을 통해 평가하였다.

• Korean Journal of Mathematics
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• 제18권4호
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• pp.425-440
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• 2010

Using Green's theorem, elliptic boundary value problems can be converted to boundary integral equations. A numerical methods for boundary integral equations are boundary elementary method(BEM). BEM has advantages over finite element method(FEM) whenever the fundamental solutions are known. Helmholtz type equations arise naturally in many physical applications. In a boundary integral formulation for the exterior Neumann there occurs a hypersingular operator which exhibits a strong singularity like $\frac{1}{|x-y|^3}$ and hence is not an integrable function. In this paper we are going to remove this hypersingularity by reducing the regularity of test functions.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.1008-1011
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• 2001

The purpose of this paper is to evaluate the chip breakability during turning using the experimental equation, which is developed by an orthogonal array method. The chip breaking index(CB), non-dimensional parameter is used in the evaluation of chip breakability. The analysis of variance(ANOVA)-test has been used to check the significance of cutting parameters. And using the result of ANOVA-test, the experimental equation of chip breakability, which consists of significant cutting parameters, has been developed.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 춘계학술대회 논문집
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• pp.114-118
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• 2005

In this study, the DC dielectric breakdown of epoxy composites used for molding material was experimented and then its data were simulated by Weibull distribution equation. From the analysis of Weibull distribution, it was confirmed that as the allowed breakdown probability was given by 0.1[%], the applied field value needed to be under 21.5[kV/mm].

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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• pp.187-188
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• 2013

Meanwhile, the importance of managing factors affecting labor productivity has been recognized and emphasized. However, in the previous study, qualitative evaluation only took place for these factors. In this study, therefore, identified and quantified the priority of factors decreasing labor productivity, and established basic data.

• 대한수학회논문집
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• 제38권2호
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• pp.589-598
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• 2023

Magnetic curves are the trajectories of charged particals which are influenced by magnetic fields and they satisfy the Lorentz equation. It is important to find relationships between magnetic curves and other special curves. This paper is a study of magnetic curves and this kind of relationships. We give the relationship between β-magnetic curves and Mannheim, Bertrand, involute-evolute curves and we give some geometric properties about them. Then, we study this subject for γ-magnetic curves. Finally, we give an evaluation of what we did.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2001년도 춘계학술대회 논문집
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• pp.109-113
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• 2001

The purpose of this paper is to propose an analytical method for evaluating user satisfaction of Internet websites using the structural equation model(SEM). This paper is intended to identify critical evaluation factors of user satisfaction for websites to determine criteria for evaluating the websites, and use the criteria to develop a SEM model for quantitatively evaluation of each factors' effects of user satisfaction. The SEM model used 2 variables of usability and good-looks for the evaluation factors of websites user satisfaction and each factors have 4 sub evaluation criteria, 3 portal sites were evaluated to construct the SEM model, and 155 subjects participated the website evaluation using the walk-through and face-to-face survey method. Analysis results showed that the SEM model was statistically significant for all the 3 websites evaluated. Both the usability and good-looks two factors also showed significant effects to user satisfaction of websites and have positive correlation. The user satisfaction was more effected by the usability factor than good-looks, and the simplification and harmonization were the most critical sub-factors of the usability and good-looks.