• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.10a
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• pp.315-318
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• 2009

Electric shock is the accident caused by the current through a person or animal's body. That is characterized by the physiological effects. In this paper, we evaluate performance of protection against electric shocks for TT and TN grounding systems which are used by a low voltage consumer nowadays. The performance of protection against electric shocks for TT grounding system is very excellent in equipotential area of the third class grounding, but the performance is poor outside the equipotential area. The performance of protection against electric shocks for TN grounding system is excellent because the potential difference is less than 50V. Accordingly, the performance of protection for TN grounding system is good as compared with that for TT grounding System.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.39 no.3
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• pp.409-418
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• 2019

For the success of construction projects, construction companies have begun to recognize the innovation ability of members who participate in projects that can adapt and cope with environmental changes caused by knowledge-based informatization and globalization. The questionnaire of the research selected 254 final valid samples of the members participating in the construction project using online. An empirical analysis of the research model used the structural equation model (Smart-PLS 2.0). The purpose of this study is to investigate the effect of psychological ownership on person-job fit and rewards system in the construction project. First, person-job fit has a positive effect on psychological ownership. Second, intrinsic rewards and extrinsic rewards in the rewards system have a positive effect on the psychological ownership. Third, psychological ownership has a positive effect on innovative behavior. Finally, the mediating effects of psychological ownership were found to have no mediating effect on person-job fit and rewards system. In order to induce innovation behavior, the managers of construction companies need to recognize the importance of psychological ownership and build a model of construction project organization activation through development of person-job fit and rewards program.

• Human Ecology Research
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• v.59 no.1
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• pp.113-125
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• 2021

Previous research on the association between marriage and life satisfaction is limited due to the lack of attempts to investigate the time profiles of life satisfaction around marriage. This study addresses unresolved questions about the positive association between marriage and life satisfaction as well as tests if it is moderated by childhood parental divorce. Using 14 waves of the Korean Welfare Panel Study(N=3,890 individuals or 25,338 person-year observations), the author first used an ordinary least squares model with clustered standard errors and found that married people reported higher life satisfaction before marriage, compared to people who remained single during the survey. This result supports a social selection perspective. Next, the author used a fixed effects regression model and found that the transition into marriage was associated with an initial rise and subsequent decline in life satisfaction. Life satisfaction increased after reaching its lowest level in the third year of marriage. Life satisfaction after the transition into marriage was significantly higher than that observed three or more years prior to marriage. The result supports a social causation perspective. Such changing patterns were not moderated by parental divorce during childhood. This study advances the current literature on marriage and life satisfaction by using a nationally representative longitudinal data set as well as by testing social selection and causation perspectives.

• Journal of Fashion Business
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• v.9 no.5
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• pp.96-113
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• 2005

The purpose of this study was to examine acutely effective marketing strategies for bridge line imported handbag brands in order to succeed in launch and establishment in local market. Based on the successful bridge line imported handbag brands status in local market, this selected the brands, "LeSprotsac", "Longchamp", "Sequoia" that execute brand strategy including positioning strategies such as basic concept, prices, materials, promotion, distributions in order to succeed in local launching. For corroborate analysis, three staffs in each brands, consecutive in-person interviews and continuous telephone interviews, mail survey were used for this study. The results were as follows; First, differentiate brand positioning strategy that has considered accurate analysis of niche market and domestic market environment when brand launch effects on brand value enhancement. Second, marketing mix activity based on positioning strategy effects on establishing brand image and spreading brand awareness. Third, marketing activity based on positioning strategy should be executed based on consistent brand strategy.

• The Journal of the Korea Contents Association
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• v.17 no.4
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• pp.200-208
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• 2017

Despite a rapid market growth in VR, cyber sickness has become the most serious problem in terms of user experience. The aim of this study is to verify whether there are differences in user's perception of cyber sickness by the point-of-view and the movement in VR contents. An experimental testing of game playing with VR headset was conducted on the effects of two conditions: first-person and third-person views in the point-of-view condition, and yaw - pitch rotations in the head movement condition. The results showed that cyber sickness worsened in the first-person point-of-view and in the yaw rotation movement. Point-of-view and movement had main effects on the cyber sickness, but an interaction effect between point-of-view and movement was not found. Based on the findings, along with reducing VR sickness, we proposed practical implications for VR contents planning for building balanced VR user experience. Positive VR experience can be reinforced through visual design, multi-modal interface design, and experience marketing for the optimal level of contents immersion. A future research was suggested on the roll rotation for diverse content genre development.

• Korean Journal of Social Welfare
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• v.63 no.4
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• pp.253-275
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• 2011

The aim of this study is to examine the difference of features between poor group and non-poor group. And, it is examined whether there are man and woman's differences. The investigation targeted the person who were using 'Regional self-support center'. They were classified into poor and non-poor group depending on the participation pattern of the self-support programs. Using logistic regression technique, I analyzed the effects of a series of independent variables on the dependent variable of whether or not person is in poor group and then compared the analysis results. The findings and policy implications are as follows. First, it was found that the health condition of women has a significant effect on the likelihood of poverty. Therefore, it is necessary to support appropriate medical service and improvement of health condition to them. Second, the business career of women was one of the factors affecting. Whether the business career is or not, it is necessary to do different support. Third, like what has been known until now, care giving was found to be a heavy burden for woman.

• Korean Journal of Social Welfare
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• v.46
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• pp.319-348
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• 2001

The primary purpose of this study is to examine the buffering effect of social welfare services on the relationship between the level of older persons' impairment and burden experienced by the family caregivers. It also assessed the level of caregiving burden as well as the effect of both older person's impairment and the characteristics of the caregivers on burden. The survey data collected from 150 community residing family caregivers was used for analyses. Findings are as follows. First, the caregivers are more burdened in the deterioration of mental health, scarce time for oneself, and the suffering of social life than in other areas of burden. Second, the more severe the physical and the mental impairment of the elder, the more burden the caregivers experience. The caregivers' characteristics such as the worse mental health, the lower level of attachment to the elder, the longer caregiving hours are also related to the higher level of caregiving burden. Third, the caregivers' use of adult day care and respite care services buffer the relationship between the level of impairment of older persons and the caregiving burden. However, social work counselling, visiting nurse, homemaker services do not have such buffering effects. Among informal support, instrumental support buffers the relationship between the elder's physical impairment and burden, while emotional support buffers the relationship between the elder's mental impairment and burden. According to the results, implication for social welfare services and practice methods for the family caregivers was discussed.

• Journal of the Korean Home Economics Association
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• v.44 no.8
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• pp.23-32
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• 2006

Understanding the experience of parents without custody after divorce is important in terms of facilitating their adjustment and positive relationships with their children. Ninety-two noncustodial parents divorced within the previous 5 years completed a structured questionnaire. We examined differences between noncustodial fathers and mothers in terms of the frequency of the contact and the relationship satisfaction with children. In addition, using the regression model, we analyzed the effects of several characteristics of noncustodial parents, including gender, on the frequency of contact as well as the relationship satisfaction with children. The main results of the study are as follows. First, noncustodial fathers and mothers exhibited similar low levels of contact by phone and in-person visits. Second, noncustodial parents with a child older than 8 years old visited the child more frequently, and were more satisfied than noncustodial parents with younger children. Third, the level of desire to gain the child custody had a significant effect on the frequency of contact and the satisfaction of the relationship between the noncustodial parents and their children. Fourth, noncustodial parents with more positive feeling about their former spouse contacted more frequently with the children. Fifth, compared with noncustodial fathers, noncustodial mothers demonstrated a higher relationship satisfaction with their children.

• Communications for Statistical Applications and Methods
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• v.23 no.6
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• pp.531-541
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• 2016

Cerebral atrophy affects the brain and is a common feature of patients with mild cognitive impairment or Alzheimer's diseases. It is evaluated by the radiologist or reader based on patient's history, age and the space between the brain and the skull as indicated by magnetic resonance (MR) images. A total of 70 patients were scanned in the supine and prone positions before three radiologist assessed their atrophy level. This study examined the radiologist's assessment of the cerebral atrophy level using a graded response model of item response theory (IRT). A graded response model (GRM) is fitted to our data and then item-fit and person-fit statistics are evaluated to assess the fitted model. Our analysis found that the cerebral atrophy level is better discriminated by readers in the prone position because all item slopes were greater than 2 at this position, versus the supine position where all the slope parameters were less than 1. However, the thresholds are very similar for the first reader and are quite different for the second and third readers because the scanning position affects readers differently as the category threshold estimates vary considerably between the readers..

• The Korean Journal of Food & Health Convergence
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• v.3 no.1
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• pp.1-7
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• 2017

The study has made theoretical system by thesis journals at home and abroad, material of the Association of Convenience Store Industry of Korea, materials of Statistics Korea and reference books. First, the study examined convenience store's brand image, cognized value, quality level, reliability upon brand, structural relation of purchasing intention, and designed models and theses. Second, the first questionnaire consisted of test items of precedent study, and inspected in advance to inspect reliability and appropriateness, and made correction and supplemented problems. Third, SPSS and AMOS statistics were used to conduct empirical analysis and to find out conclusion and implications. In this study, the subject was consumers who visited local convenience stores such as GS25, Seven Eleven and CU last 3 months to buy PB food. Consumers' consumption pattern and culture made change to be reasonable and practical owing to aging society, nuclear family, women's entering into the society, one person household consumer, and convenient and prompt buying to make different consumption pattern and to make change of commodity distribution pattern. Convenience store took action against change of the trend to expand business area by new distribution channels to get another growth source. Private brand (PB) food that was distributor's brand was expanded. The PB product has been competitiveness of food service industry.