• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.6
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• pp.963-969
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• 2013

This study aimed to examine the relationships between demographic characteristics, health, and internet addiction factors and drug uses among the Korean high school students. The 2009 Korean Youth Health Risk Behavior On-line Survey data was used for this study. It selected 73,238 cases of junior and senior high school students from the raw dataset and conducted a secondary data analysis. Frequency analysis and chi-square test were conducted for this study. Gender, living with parents, economic status, school level, academic record, subjective health status, subjective well-being, level of stress, level of depression and internet addiction were significantly associated with their drug uses. Findings may be used for developing strategies to cope with drug uses among the Korean high school students.

• Journal of the Korean Institute of Gas
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• v.16 no.5
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• pp.35-40
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• 2012

To analyze the macroscopic fracture behavior as functions of the gas pipeline grade and the working environment, following analyses have been accomplished. Computer analysis of changes in fracture behaviors according to the working conditions of pipelines and Analysis of dynamic ductile fracture behaviors using the Battelle Two Curve Method. Recently, an economic and reliable pipe materials with improved performance has been needed for the severe pipeline working condition and new transporting materials. As the grade of pipe materials became higher, the possibility of dynamic ductile fracture could be increased. Therefore, the understanding of the technology to control and arrest the dynamic ductile fracture is important.

• Journal of Korean Library and Information Science Society
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• v.45 no.1
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• pp.249-270
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• 2014

The purpose of this study is to discover the mobile-based information behaviors of the older adults with comparison of the college students and then to provide some fundamental ideas of the bridging digital devide for them. For this aims, data were collected from seniors and college students living in Daegu and Kyung-buk province via a self-designed questionnaire, and the data of 375 seniors and 323 college students were analysed with $x^2$ and t-test using SPSS. It revealed that the economic condition did not influence in the possession of mobile devices, and for leisure was most favorite activity in both groups. However, the college student group suggested the supply of free or low price mobile device; whereas the older adults group suggested the spread of education of mobile device usage would be the most important matter for bridging the digital devide. Various results of the study were presented with tables and figures in this paper.

• Journal of the Korean Society of Costume
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• v.16
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• pp.211-220
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• 1991

The purpose of this study is to examine the effect of the fashion shop display on the clothing purchase made by the sample of 369 adult women living in Seoul area. In this study, the interest and the effect of the display are investigated through such factors of demographic variables as each individual's age, educational career, vocation, average family income a month, and marriage status. And the relationship is also examined between the person's interest paid on the display and the clothing attitude related variables of fashion follow tendency, individuality, and the way of practical economy. An additional examinations are performed in the first reactive factor to be considered at the time of the clothing purchase, and the interrelation between the discontent after purchase and the effect of display before purchase. The major findings of this research, thus, can be summarized as following: 1. Demographic variables of women reflect differences in their interests toward display and accordingly the variety of the display effect as well. Less interest and effect are caused by the effort of display for the women in their senior age. However, a group of the character women and young college women pay relatively more attention to the display and give more effect to the purchase. The examination shows alsp that the unmarried and better-off and better-educated are more sensitive to the effect of the display. 2. The higher is the individuality and the fashion follow tendency, the stronger revealed the interest in the display, while the economic women have less interest in it. 3. The first factor considered at the time of purchase is not absolutely affected significantly by the degree of the display effect in real purchasing act. 4. The discontent after purchase is not related with how much the degree of display effects in the act of real purchase.

• Journal of the Korean Society of Costume
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• v.51 no.2
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• pp.105-120
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• 2001

The purpose of this study is to identify the relationship of self-efficacy, which is a kind of the self concept about one's own ability, to the decision-making process, which is the key part of consumer behavior. The subjects in this study were 985 male and female undergraduates of a university located in the city of Kyongsan, the north Kyongsang province. The collected data were statistically processed by MANOVA and ANOVA. For post test, Scaffle and $\chi$$^2$-test were employed. The followings are findings of this study : 1. Concerning incentive to buying, the group having the weaker general self-efficacy is stimulated more highly by the incentives of self-display, fashion pursuit and economic utility than the group having the stronger general self-efficacy does. 2. Regarding information sources. the factor of observation is frequently used by the group having the weaker general and social self-efficacies more than the group having the stronger general and social self-efficacies. 3. As to the evaluative criteria of clothes, the group having the stronger general and social self-efficacies put a higher value on functional and economical points than the group having the weaker general and social self-efficacies does. 4. As for the evaluative criteria of store the group having the stronger general self-efficacy lays stress on store atmosphere, store attributes and convenient shopping condition, while the group having the weaker general self-efficacy puts emphasis on brand and fashion. 5. In buying apparels, the group having the stronger general and social self-efficacies makes more planned purchase.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.14 no.3
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• pp.391-402
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• 1994

One of the most important design concept for reinforced concrete structures is to achieve a ductile failure mode, and also moment redistribution for economic design is possible in case that adequate ductility is provided. Flexural ductility index is, therefore, used as a reference for possibility of moment redistribution as well as for prediction of flexural behavior of designed R.C. structures. Ductility index equations, however, provide approximate values due to the linear concrete compressive stress assumption at the tension steel yielding state. Theoretically more exact ductility index is calculated by a numerical analysis with the realistic stress-strain curves for concrete and steel to be compared with the result from tire ductility index equations. Variation of ductility index for the selected variables and the reasonable maximum tension steel ratio for doubly reinforced section are investigated. A moment-curvature curve model is also proposed for future research on moment redistribution.

• Journal of the Korean Society of School Health
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• v.33 no.1
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• pp.10-18
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• 2020

Purpose: The purpose of this study was to investigate the effects of secondhand smoke on depression and suicidal ideation in adolescents. Methods: The study used the raw data of the Korea Youth Risk Behavior Web-based Survey (2018). Age, academic achievement, living with family, economic status, and stress were adjusted and the relationship between secondhand smoke and depression and suicidal thoughts was analyzed by gender. Results: The results showed that secondhand smoke had a significant effect on mental health of adolescents. Male students who experienced secondhand smoke at school and at public places had 1.41 times and 1.37 times higher depression rates, respectively. Female students who experienced secondhand smoke at home, school, and public places had 1.27 times, 1.35 times, and 1.39 times higher depression rates, respectively. Suicidal thoughts were 1.17 times and 1.22 times higher among male students who experienced secondhand smoke at school and at public places. Female students who experienced secondhand smoke at home, school, and public places had 1.12 times, 1.08 times, and 1.21 times more suicidal thoughts. Conclusion: Secondhand smoke has a significant effect on adolescent depression and suicidal thoughts. Therefore, efforts should be made to have institutional changes and increased awareness across the country, such as homes, schools, and communities, to prevent exposure to secondhand smoke.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.8 no.2
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• pp.56-64
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• 2005

The objective of this study is to provide basic data for building better exterior spaces for stadiums in the future by analyzing the behavior of users, such as the satisfaction measure and the physical environment, after using the exterior space at an existing stadium. To achieve this, multiple methods of data gathering and analyses such as field surveys, documentary surveys, and questionnaires research were used in this study. In the survey of user satisfaction, regression analysis was conducted on all factors. Factor analysis was conducted on the variables that were classified into physical, functional, social, and psychological factors. The factors were then tested and based on the results, multiple regression analysis was conducted to measure the effects of the factors concerning satisfaction. A questionnaire research on the use of the exterior space of a stadium as well as the social and economic backgrounds of the users was also conducted in order to utilize the results for the basic data for analysis of satisfaction. According to the results of this study, the exterior space of a stadium satisfied overall expectations. However, it is deemed important to introduce various facilities and activity programs and to improve the exterior spaces for users in building stadiums in the future.

• The Journal of the Korea Contents Association
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• v.17 no.10
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• pp.161-170
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• 2017

Research should explore techniques that will allow disposal of the dead to help the living by providing public space, protecting the environment, and contributing to economic development. Its design might bring a cemetery back into community life and make a present of a park. This new design for a cemetery can provide a structural solution for limited burial sites on the metropolitan area of Korea. It is based on the shared sense of a cemetery, a joint ownership or co-ownership of the space of a cemetery. FBS model by Gero[1] is used for engineering a cemetery design development. This framework contains a dynamic character of the context where such design takes place among its function, behavior and structure. This study suggests a new cemetery concept rather than a simple civil engineering work for a cemetery. It aims for people to have a new perspective on a cemetery and contribute to the society through an eco-friendly business model, so FBS may be an adequate model for such design. It can be one of the innovative business models and designs for engineering cemeteries, implementing sustainable environment and changing the design from a cemetery to a natural park.

• Environmental and Resource Economics Review
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• v.15 no.2
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• pp.177-200
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• 2006

The demand for the study about the pollution haven activities under increasing return to scale is increasing since the trade theory under increasing return to scale has been developed. In this paper, based on Davis (1998)'s argument about home market effect, pollution haven activities under increasing return to scale is developed. The result shows that pollution haven effect can be identified with the high trade barriers. When the trade barriers are lowered, both pollution haven effect of heavy polluted industries and migration of low polluted industries are mixed together. Even the behavior under pollution haven hypothesis and that of pollution haven effects are co-existed. Therefore, to keep both environmental protection and continuous economic development, the local government of the region with high environment preservation value encourages the productivity increase of the environmental technique.