• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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• 2002.02a
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• pp.221-224
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• 2002

Superconducting electrical devices are under development in a national project in Korea. And KEPCO and LGIS are in charge of development of a resistive type fault current limiters(FCLs) with YBCO thin films. In order to realize FCLs, the rated power of FCLs must be increased. For this purpose, it is of great interest to increase of allowed voltage of unit component without electrical and thermal damages. So, meander lines were widely used for the conducting path to increase maximum electric field. In this research, numerical simulations on the electromagnetic behaviors of the device were carried out, especially focusing on the effect of meander line structures on the YBCO thin films. To evaluate the structures of meander lines, three types of meander lines were considered for numerical analysis using finite element method (FEM). In this simulation, both normal state and fault conditions were considered for calculation of electric field, current density, magnetic field density. And the simulation resulted are compared to find the optimum design of meander lines for resistive FCLs.

• International Journal of Automotive Technology
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• v.3 no.4
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• pp.165-170
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• 2002

For a vehicle Anti-lock Braking System (ABS), the control target is to maintain friction coefficients within maximum range to ensure minimum stopping distance and vehicle stability. But in order to achieve a directionally stable maneuver, tire side forces must be considered along with the braking friction. Focusing on combined braking and turning operation conditions, this paper presents a new control scheme for an ABS controller design, which calculates optimal target wheel slip ratio on-line based on vehicle dynamic states and prevailing road condition. A fuzzy logic approach is applied to maintain the optimal target slip ratio so that the best compromise between braking deceleration, stopping distance and direction stability performances can be obtained for the vehicle. The scheme is implemented using an 8-DOF nonlinear vehicle model and simulation tests were carried out in different conditions. The simulation results show that the proposed scheme is robust and effective. Compared with a fixed-slip ratio scheme, the stopping distance can be decreased with satisfactory directional control performance meanwhile.

• Journal of Korea Society of Digital Industry and Information Management
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• v.11 no.3
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• pp.113-124
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• 2015

As the development of new media and smart phone, more and more people are using social commerce application to shop on-line. Comfort and easiness of the UX design of the application directly affect the social commerce user's searching and buying the merchandise. This study analyzes the effect of social commerce application, especially focusing on the lay-out of the GUI, on the consumer's interest and we suggest an attractive application design of the UX. The material of this study is the lay-out of the GUI of 3 major social commerce - Wemakeprice, Coupan and Ticket monster. We asked questions to the university students who are skillful smart phone users to select frequent on-line shoppers and performed in-depth interview with them to draw a conclusion. As a result of study, differences of main screen layout and information architecture of each social commerce applications has confirmed that indicates a significant difference in usability.

• Journal of Fashion Business
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• v.9 no.3
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• pp.64-87
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• 2005

The purpose at this study is to develop the appropriate bodice model for Chinese women in order to contribute to the improvement of fitness at clothing products that are exported to China. The sample group was the subject of 149 persons with the standard body shape at 19-24 years old women who reside in Beijing and Shanghai, China. The data analysis is processed for statistics using SPSSWIN 10.0 PROGRAM, and the used analysis methods are technical statistics analysis, factor analysis, group analysis, and one-way ANOVA. The outcome of this study is summarized as follows. 1. Prior to develop the tight-fitting shape of bodice model, the body classification approach by the posture and type of bending and stretching is selected to use 6 index items, and the body types are classified into bent body, right body, and pull-back body. 2. The average body size of standard body shape had 3 times of wearing experiment based on the tight-fitting shape of ESMOD bodice block drawing, and the system was corrected and supplemented to present the final bodice block drawing. 3. Comparisons have been made based on the center front line, center back line and chest circumference for each of existing bodice block for Chinese women, existing bodice block for Korean women and the combination of the bodice block under this study.

• Fashion & Textile Research Journal
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• v.13 no.2
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• pp.234-241
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• 2011

In this study, the effect of Internet clothing soho mall attributes on attitude toward site and revisit intention was investigated. A total of 292 female college students participated in the experiment to explore a clothing soho mall out of 20 highly-ranked soho malls for shopping and to complete a questionnaire. In exploratory factor analysis results, five factors were generated out of 18 question items indicating clothing soho mall attributes. Among those five factors, 'product assortment and presentation' was the most important factor affecting attitude toward site and revisit intention toward a clothing soho mall. In addition, 'site construct' was another factor affecting attitude toward a clothing soho mall site specifically in the group who shops clothing more often on the Internet shops than off-line shops. Based on study results, implications and insights were discussed.

• Journal of the Korean Operations Research and Management Science Society
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• v.38 no.3
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• pp.23-35
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• 2013

It is very important that the calculation of railroad track capacity in infrastructure investment analysis and train operation planning. The dwelling time is one of the factors that influence in railroad track capacity. Current research in dwelling time has been focusing on theoretical investigation, the state of the research in effective variable (dwelling time etc) is insufficient. In this paper, we clearly draw the concept of railroad track capacity and the estimate on modeling of relationship railway demand and dwelling time. Also, we compare and analyze the variation of railroad track capacity according to transit railway demand in Gyeongin Line (Guro~Inchon). This paper is expected to contribute for improving on the in-using equations and methods in train operation planning as well as for improving level of service on railway user.

• Journal of Family Resource Management and Policy Review
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• v.17 no.3
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• pp.19-37
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• 2013

The purpose of this study was to provide the basic data required for the development and operation of high-quality education programs for newly married couples. The subjects were 60 education programs for newly married couples that were performed by 30 Healthy Family Support Centers in Seoul and the Gyeonggi area. The collected data were analyzed by applying appropriateness, efficiency, and effectiveness on the basis of program plan, execution, and evaluation. The results were as follows. First, the appropriateness of the program plans was no center that performed need survey. As for program advertisement, on-line, off-line, and person -to-person advertisements were used. Second, the education goals and contents were classified according to healthy family life, the essence of the marriage, gender equality, conflict management, problem prevention, relationship improvement, understanding of mutual similarities or differences, financial plan and management, and parenting. Each session lasted 2 hours, and the total number of program hours was 5 to 6 hours. The education methods were activities, lectures, and discussions.

• Proceedings of the Korean Geotechical Society Conference
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• 2005.03a
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• pp.320-327
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• 2005

Liquefaction characteristics of saturated sand under various dynamic loadings such as sinusoidal, wedge, increasing wedge and real earthquake loading are investigated focusing on the excess pore water pressure build up instead of liquefaction resistance strength in this paper. There are large differences between two types of earthquake loading - impact and vibration in liquefaction characteristics. The angle of phase change line of sinusoidal loading is very close to the vibration type, whereas the cumulative deviator stress and cumulative plastic strain are larger than two types of real earthquake loadings. On the other hand, the liquefaction characteristics of increasing wedge loadings are located in the range between vibration and impact earthquake loadings. It is concluded that the sinusoidal loading overestimates the resistance of soil under real earthquake loading. Based on results obtained, the increasing wedge loading can reflect the liquefaction behavior under real earthquake loadings more efficiently than sinusoidal loading based on equivalent uniform stress concept.

• Human Ecology Research
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• v.58 no.3
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• pp.391-400
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• 2020

This study examined the relationship between ambivalence of Korean working mothers for children and their future desire for child birth. This study examined multiple-role efficacy as a mediator in the relationship between ambivalence for their children and future desire for child birth by Korean working mothers having more than one pre-school aged child. This study examined the mediation effect of multiple-role efficacy on the relationship between ambivalence and desire for child birth by working mothers. On-line and off-line survey data from 291 Korean working mothers with more than one pre-school aged child was used for this study. Collected data were analyzed using the PASW 18.0 program and descriptive statistics analyses. Structural equation modeling and bootstrapping were conducted by AMOS 20.0 program. Results showed that ambivalence for children of working mothers having pre-school aged children had no direct influence on future child birth desire. However, their ambivalence had an indirect influence on future child birth desire through multiple-role efficacy and multiple-role efficacy by working mothers had significant effect on child birth desire. In conclusion, the working mothers' multiple-role efficacy had a mediation influence on the relationship between ambivalence for children and desire of child birth. These results were discussed for designing a policy to counter low birth.

• Journal of the Korean Society of Costume
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• v.59 no.2
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• pp.128-142
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• 2009

American trendy casual style can be characterized as fitted to body and rendering sexy and fashionable images and now very popular in Korea. This paper aims to identify how American trendy casual styles have been introduced and diffused among Korean young people and also compare the similarities and differences between American and Korean styles. American trendy casual style was introduced and diffused through 4 channels: people who have living experiences in America, media exposure by American films, TV dramas and fashion magazines, on-line network using internet cafe, club and blog, use of on-line shopping mall speciallized for purchasing American apparel brands. Some of American celebrities became fashion ikons and played critical roles in diffusing American trendy styles. Photos of those American celebrities and street fashion of Korean young women were collected through internet search from Sep. 2006 to Aug. 2007. 6 styles including leggings, mini skirt, short dress, skim jeans, pants with long boots, big bag and long necklace were selected as representing American trendy casual styles. Silhouettes and overall styling were very similar in all 6 items. But Differences were found in terms of rotor, amount of details, item coordination, matching shoes and overall images.