• 한국의류학회지
• /
• 제32권9호
• /
• pp.1450-1460
• /
• 2008

The goal of this study was to investigate the impacts of service quality, customer satisfaction, and switching burier on store loyalty of the clothes shops at large-scale discount stores. The subjects were 357 female adults living in Suncheon City, Jeollanam Province. The questionnaires were conveniently sampled from June 1 to 30, 2006. The collected data were factor and reliability analyzed using the SPSS program. And Regression was used to verify the relationships between the variables. Among the six hypotheses set in the research model, total three were accepted through empirical analysis and the rest three were accepted partially. The empirical results showed the following managerial implications. First, consumer' perceived service quality has relationship with customer satisfaction and store loyalty. Second, service quality has a positive relationship with switch barrier. Third, customer satisfaction has significantly related with switch barrier. Fourth, switch barrier has positively related with store loyalty. Finally, 'sales people', 'VMD/atmosphere', and 'assortment' of the service quality factors have positive relationships with store loyalty, but 'policy' has a negative relationship with store loyalty.

• KIEAE Journal
• /
• 제8권2호
• /
• pp.65-70
• /
• 2008

Recently, there has been growing interest in barrier-free design which makes safe and convenient space for every pedestrian, not only the non-disabled but also the disabled. The purpose of this study is to suggest the data on the pavement materials of barrier-free pedestrian environment in view of universal design. In order to this, the research is focused on evaluating the visual preference and preference factors for pavement scenery, which can be changed by pavement materials. And this research is also comparing the visual preference and preference factors of the disabled with that of the non-disabled. A multi-regression analysis method is adopted to analyse the correlation between the visual preference for pavement scenery and preference factors in this study. The result of this analysis is as follows. Firstly, there are some differences of visual preference for the pavement material between the disabled and the non-disabled. Secondly, independent variables influencing on preference are similar between two groups. Thirdly, there are some differences in the priority of preference between the disabled and the non-disabled. This study will contribute to the field of barrier-free design and sustainable development projects in order to maximize the human being's satisfaction.

• 한국의류산업학회지
• /
• 제18권5호
• /
• pp.617-624
• /
• 2016

The purposes of this study was to investigate impacts of loyalty program value on store loyalty through customer satisfaction and switching barrier. This study suggests some basis about the direction guidance for successful store-running marketing activities and beauty service related researches. A total of 986 usable questionnaires were obtained from female adults of Busan. Data were analyzed by frequency analysis, correlation analysis, factor analysis using SPSS for Window 22.0 and confirmatory factor analysis and structural equation model analysis by AMOS 22.0. The results suggested that, loyalty program value benefits(hedonic benefits and utilitarian benefits) had positive effect on customer satisfaction, and loyalty program value costs(hedonic costs and utilitarian costs) had oppositive effect on customer satisfaction. The impact of hedonic benefits of the loyalty program values was the largest. Customer satisfaction and switching barrier directly affect store loyalty. The customer satisfaction affected the store loyalty indirectly but the direct effect was bigger.

• 한국항공우주학회지
• /
• 제40권6호
• /
• pp.492-498
• /
• 2012

DBD(Dielectric Barrier Discharge) 플라즈마 액츄에이터의 설계 파라미터에 따른 특성을 연구하였다. 방전전압, 주파수, 전극의 간격, 폭, 길이, 유전체 두께에 따른 DBD 플라즈마 액츄에이터의 유속 및 소모전력을 측정하였다. 방전전압과 주파수가 클수록 유속과 소모전력은 증가하였다. 전극간격은 클수록 소모전력은 감소하면서 유속은 증가하였으나, 플라즈마 방전을 위해 높은 전압이 요구되었다. 상부전극폭은 좁을수록, 하부전극폭은 넓을수록 일정한 소모전력으로 유속을 증가시킬 수 있었다. 주어진 방전조건과 전극형상에서 DBD 플라즈마 액츄에이터의 성능을 예측할 수 있을 것으로 기대된다.

• 한국BIM학회 논문집
• /
• 제10권4호
• /
• pp.1-10
• /
• 2020

While the importance of barrier-free and fire evacuation design is highlighted in architectural design education, systemic analysis, and examination on such performances are still challenging due to methodological lacks. The present study investigates the effectiveness of BIM-based human behavior simulation for architecture major students' analytical examinations to promote barrier-free and fire evacuation performances. To achieve such an aim, quasi-experiments were conducted, which compare 50 students' analysis and examination scores according to the use and non-use of the simulation, and the data were collected via participants' survey and interview. As a result, T-Test and MANOVA analyses indicate that, compared with its non-use counterpart, the use of human behavior simulation better facilitates the students' (1) examination of the physical properties and dimensions for the disabled's accessibility and evacuation, (2) understanding of the bodily capacity and handicap of the disabled, (3) examination on the spatial layouts and locations of exits, (4) understanding on evacuees' urgent behaviors, and (5) responsibility as an architect. Based on previous studies, the reasons of statistical results are interpreted as the explicit observation and analytical measures of multiple numbers of virtual-evacuees and direct-experience from body range of the disabled responding to the populated occupants as what they face in authentic reality.

• Ocean Systems Engineering
• /
• 제11권1호
• /
• pp.1-16
• /
• 2021

Experimental and numerical investigations were conducted to study the performance of a surface-fixed horizontal porous wave barrier in regular waves. The characteristics of the reflection and transmission coefficients, energy dissipation, and vertical wave force were examined versus different porosities of the barrier. Numerical simulations based on 3D Reynolds Averaged Navier-Stokes equations with standard low-Re k-ε turbulent closure and volume of fluid approach were accomplished and compared with the experimental results conducted in a 2D wave tank. Experimental measurements and numerical simulations were shown to be in satisfactory agreement. The qualitative wave behavior propagating over a horizontal porous barrier such as wave run-up, wave breaking, air entrapment, jet flow, and vortex generation was reproduced by CFD computation. Through the discrete harmonic decomposition of the vertical wave force on a wave barrier, the nonlinear characteristics were revealed quantitatively. It was concluded that the surface-fixed horizontal barrier is more effective in dissipating wave energy in the short wave period region and more energy conversion was observed from the first harmonic to higher harmonics with the increase of porosity. The present numerical approach will provide a predictive tool for an accurate and efficient design of the surface-fixed horizontal porous wave barrier.

• 한국응용과학기술학회지
• /
• 제40권6호
• /
• pp.1445-1453
• /
• 2023

In 2022, the domestic production performance of functional cosmetics in South Korea reached 4.6 trillion won, accounting for 33.85% of the total cosmetics production. The number of functional cosmetics reviewed increased by about 7.5% from the previous year, totaling 974 items. Especially with the increasing importance of the skin barrier function due to skin sensitivity caused by various environmental pollutants, domestic cosmetic companies are showing interest in the development of new ingredients and products related to this area. This study aims to analyze academic research trends related to in vitro experiments for the development of cosmetics improving the skin barrier, to provide practical information for the cosmetic industry. The findings are as follows: Academic research mainly focused on the efficacy of natural ingredients in improving the skin barrier, but there is a significant lack of quantitative accumulation of research. For the development of skin barrier-improving cosmetic ingredients, efficacy evaluation indicators were set, including hyaluronic acid production, expression of filaggrin gene, loricrin, formation of cornified envelope (CE), and expression of ceramide synthesis enzyme genes. Moreover, effective cosmetic ingredients for improving the skin barrier included lemongrass and perilla leaf extracts, flavonoids, Lactococcus lactis subsp. lactis, Exosomelike Nanovesicles derived from apple callus, Eleutherococcus sessiliflorus, Acanthopanax sessiliflorus, Eleutherococcus gracilistylus, Acer okamotoanum extracts, Aloe vera adventitious root extract, ethanol extract of Aruncus dioicus, and organic solvent fraction of Dracocephalum argunense.

• 한국안전학회지
• /
• 제32권4호
• /
• pp.34-39
• /
• 2017

Typical flow regime of overflow at barrier or weir constructed in mid and small streams becomes as the submerged flow during most flood events. One of major causes of barrier failure has been reported as the levee-scour near the conjuction node between barrier and levee. However, most related design guidelines in Korea have not mentioned about the protection of levee around barrier or weir in detail. Furthermore, most previous researches have focused on the flow characteristics of overflow around several types of weirs but they did not have considered the material properties of levee itself. In this study, local scour near barrier was investigated with different material properties of levee under the submerged overflow condition which is assumed to reenact a flood event. Based on results from Fritz et al. and Mavis et al., a theoretical formula was also proposed in initial stage of laboratory experiments. And hydraulic experiments were carried out for the verification of the proposed formula. Levee was installed in the prismetic trapezoidal open channel and most parts were made of concrete except for movable section in which scour was expected to occur for the efficiency of experimental procedure. Each compaction of movable section in levee was followed by the basis of the KS F 2312. Further, after performing the experiments to find the optimum water content for each sediment, the specific amount of water was injected before flowing water. The difference between the proposed theoretical formula and experiment results was not much but considerable, which might be caused by the effect of compaction. For theoretical approach, it seemed that the formula did not take into account the compaction of levee, thus the correction coefficient for levee compaction determined in the literature was considered. Finally, the formula for the length of scour around barrier or weir was proposed, which can be useful to predict a levee in the reference design of revetment in mid and small streams. As shortly future study, scour length of levee around barrier or weir under different flow conditions such as perfect overflow condition will be studied and it will be able to contribute to suggest the design formula or criteria under all overflow conditions near barrier or weir.

• 한국강구조학회 논문집
• /
• 제13권4호
• /
• pp.407-417
• /
• 2001

최근 고속도로와 철도가 평행하게 달라는 경우와 같은 특정위험구간에 안정성과 동시에 좋은 시야를 확보하기 위하여 다양한 철제 베리어가 제안되어 설치되고 있다. 그러나 이러한 베리어 중에서 어느 것도 국내의 충돌조건 $14tonf-80km/h-15^{\circ}$ 을 만족시키는지 확실하게 검증된바가 없기 때문에 본 연구에서는 베리어 예비설계에 가장 많이 사용되고 있는 Barrier VII프로그램을 사용하여 이러한 철재 베리어의 충돌거동을 조사하였다. 해석결과 조사된 베리어 모두 필요한 강성을 발현하지 못하였고 유형 C베리어의 강성이 상대적으로 우수하였다. 따라서, 기 시공된 유형 C 가드레일을 보강하기 위한 방안을 실험적으로 검토하였고 지주에 콘크리트를 부분적으로 보강하는 방법이 충돌조건을 효율적으로 만족시킬 수 있음을 확인하였다.

• 화약ㆍ발파
• /
• 제20권4호
• /
• pp.5-15
• /
• 2002

발파, 항타와 같은 소원음이 존재하는 건설현장에서의 소음저감대책으로는, 소음원 또는 수음점에 방음벽을 설치하여 전파되는 소음을 차단하는 것이 가장 경제적인 경우가 대부분이다. 이러한 방음벽은 소음설계와 구조설계를 통해 그 규모가 결정되며, 방음벽의 구조적 안전을 보장하기 위해서는 KS F4770에 의한 방음판의 구조적 품질이 보장되어야 한다. 본 논문에서는 이 중 금속재 흡음형 방음벽 관련 규정인 F4770-1 - 2001을 분석하여, 그 문제점을 지적하고, 수정 또는 개선 사항을 제시하였다. 분석결과, 보다 경제적인 방음벽의 설치를 위하여 하중의 세분화와 함께 시험방법의 개선이 필요한 것으로 나타났다. 이와 함께 독일의 방음벽 설계시 사용되는 규정인 ZTV-Lsw 88과 비교, 검토하였으며, 검토 결과, 한국 규정은 독일규정에 비해, 보수적인 것으로 나타났다.