• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.6A
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• pp.977-988
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• 2006

The goal of this study is to develop a realistic methodology for determination of the Life-Cycle Cost (LCC)-effective optimal seismic retrofit and maintenance strategy of deteriorating bridges. The proposed methodology is based on the concept of minimum LCC which is expressed as the sum of present value of seismic retrofit costs, expected maintenance costs, and expected economic losses with the constraints such as design requirements and acceptable risk of death. The proposed methodology is applied to the LCC-effective optimal seismic retrofit and maintenance strategy of a steel bridge considered as a example bridge in the accompanying study, and various conditions such as corrosion environments and Average Daily Traffic Volumes (ADTVs) are considered to investigate the effects on total expected LCC. In addition, to verify the validity of the developed methodology, the results are compared with the existing methodology. From the numerical investigation, it may be positively expected that the proposed methodology can be effectively utilized as a practical tool for the decision-making of LCC-effective optimal seismic retrofit and maintenance strategy of deteriorating bridges.

• 한국노년학
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• v.31 no.3
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• pp.445-461
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• 2011

The purpose of this study was to examine if there was difference of psychological well-being in mid adulthood on experience of life events and social support in pre-adulthood and the effects of life events and social support in pre-adulthood on psychological well-being in mid adulthood fromlife course perspective. The data came from 511 mid-life adults aged from 40 to 59. The main results were as follows: (1) middle aged who were experienced life events concerning school, parent, violence, and death in pre-adulthood showed lower psychological well-being than those who didn't experience life events in pre-adulthood. Psychological well-being of middle aged who received social support in emotional, material, and informational area in pre-adulthood was higher than one of the whom didn't receive social support in pre-adulthood. (2) the experienced life events concerning parent, violence, and death in pre-adulthood effect on psychological well-being in mid adulthood. Also, the received emotional support and informational support in pre-adulthood influence on psychological well-being in mid adulthood. And there were adjusting effects of life events concerning parent and received informational support in pre-adulthood on the psychological well-being in mid adulthood. These findings support life course perspective that past experiences have cumulative and interconnected effect and the individual life was closely connected with other people having meaningful relationships. Also, the intervention on psychological well-being requires not only prevent life events but augment social support that can protect after experience of life events. The intervention should suggest suitable and specific method on life events.

• Journal of Family Resource Management and Policy Review
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• v.27 no.3
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• pp.67-75
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• 2023

This study will examine the changing nature of housework by analyzing participation in domestic work among 30-somethings according to generational and life cycle characteristics. To this end, 2,687 men and women in their 30s were taken from the 2020 Family Status Survey data, and a latent class analysis was conducted to categorize their participation in housework. The subjects were categorized into three groups: overall non-participation (18.05%), overall participation (59.96%), and intensive cleaning participation (21.99%). Gender, employment status, family life cycle, and attitudes about gender roles were significantly related to participation in housework. Men were more likely to be in the overall non-participation group, while women were more likely to be in the overall participation group. Individuals in the pre-formative period of the family life cycle were more likely to be in the overall non-participation group, while those in the formative and expanding periods were more likely to be in the overall participation group. The results of this study suggest that gender inequality in housework is common in the younger generation; the results also show that, in the same generation, individual participation in housework differs according to family life cycle.

• Journal of Korean Medical classics
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• v.5
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• pp.1-7
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• 1992

• Proceedings of the KHMA Conference
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• 2012.05a
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• pp.387-387
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• 2012

• Korean Journal of Hospice Care
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• v.1 no.1
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• pp.76-79
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• 2001

• 대한소아청소년정신의학회:학술대회논문집
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• 2007.05a
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• pp.41-52
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• 2007

• 대한예방의학회:학술대회논문집
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• 2005.07b
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• pp.87-104
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• 2005

• Construction Engineering and Management
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• v.11 no.6
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• pp.38-41
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• 2010

• Journal of the korean veterinary medical association
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• v.38 no.10
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• pp.935-936
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• 2002