• Journal of Korean Society for Quality Management
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• v.51 no.2
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• pp.171-184
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• 2023

Purpose: First, this paper suggests an alternative approach to find optimal portfolio (stocks, bonds and ESG stocks) under the maximizing utility of investors. Second, we include ESG stocks in our optimal portfolio, and compare improvement of welfares in the case with and without ESG stocks in portfolio. Methods: Our main method of analysis follows Brennan et al(2002), designed under the continuous time framework. We assume that the dynamics of stock price follow the Geometric Brownian Motion (GBM) while the short rate have the Vasicek model. For the utility function of investors, we use the Power Utility Function, which commonly used in financial studies. The optimal portfolio and welfares are derived in the partial equilibrium. The parameters are estimated by using Kalman filter and ordinary least square method. Results: During the overall analysis period, the portfolio including ESG, did not show clear welfare improvement. In 2017, it has slightly exceeded this benchmark 1, showing the possibility of improvement, but the ESG stocks we selected have not strongly shown statistically significant welfare improvement results. This paper showed that the factors affecting optimal asset allocation and welfare improvement were different each other. We also found that the proportion of optimal asset allocation was affected by factors such as asset return, volatility, and inverse correlation between stocks and bonds, similar to traditional financial theory. Conclusion: The portfolio with ESG investment did not show significant results in welfare improvement is due to that 1) the KRX ESG Leaders 150 selected in our study is an index based on ESG integrated scores, which are designed to affect stability rather than profitability. And 2) Korea has a short history of ESG investment. During the limited analysis period, the performance of stock-related assets was inferior to bond assets at the time of the interest rate drop.

• International Journal of Advanced Culture Technology
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• v.9 no.1
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• pp.196-202
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• 2021

Currently, as Korea enters into a fast aging society, the problem of dementia population is increasing. In this paper, we intend to contribute to the improvement of welfare for the elderly by developing virtual reality technology and related interface technology to effectively perform hand movements known as effective methods for preventing and treating dementia. As the content of the research and development of this paper, it is designed to be easy for the elderly to use and stimulate brain function by applying VR technology using sensors, and to activate mental and physical activities for the elderly who are marginalized in terms of cultural welfare. We intend to develop by classifying the types of games and contents that can induce them. As a result of this thesis, we developed contents using virtual reality to improve cognitive abilities for elderly people with poor cognitive ability to activate the brains of users' cognition, memory, and attention to prevent and treat dementia I want to contribute.

• Korean Journal of Social Welfare
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• v.62 no.4
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• pp.59-77
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• 2010

The purpose of this paper is to suggest the implications of volunteering's task design and the volunteer's placement that make the motive-benefit matching from the functional perspective of motivation. For this study, we conducted a multi-regression analysis to examine the impact of the volunteer motivation on task satisfaction and retention will. Results showed that first, volunteers' most important motive for volunteering was social motive, followed by enhancement, value. Secondly, each motive influenced the task satisfaction and retention will of volunteers differentially. The practical implications of these findings were discussed.

• 재활복지
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• v.22 no.3
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• pp.115-144
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• 2018

This research aimed at suggesting the research direction by investigating the trend of advanced researches that were conducted targeting the 'family of the people with disabilities' in Korea. For this, the researchers selected 6 domestic academic journals, that is, 4 academic journals focusing on disability or family and 2 academic journals that generally treat the topics related to social welfare among the registered academic journals. The researchers conducted a descriptive analysis of the frequency of the research on the family of the people with disabilities, research area, research target, and research method targeting 157 researches published between the first issue and September 2017 issue, which targeted the family of the people with disabilities. Also, this research analyzed how the family function appeared in 157 researches by utilizing the analysis frame that reclassified and composed the family function areas suggested in the advanced research into 6 areas. Based on the analysis result, this research implied that research on extended family member of the people with disabilities, which had focused on the mother of the disabled, necessity of family research considering various types of disability, extension of attention to the family of the elderly disabled people, and the research on family function area method that reflect the stream of the period.

• Korean Journal of Social Welfare
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• v.56 no.1
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• pp.283-307
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• 2004

The purpose of this study is to compare the perception on family of social workers and clients. Perception of family concept, family function is changing as times passes. But social worker is facing a dilemma because of differences of the perception on family. In order to compare between social worker and client concepts on family, this study compare family concept, familism, gender egalitarianism. Data for analysis were collected from 131 social workers and 134 clients who were purposive sampled. Social worker's recognition of family concept is more acceptable than client's family typology, functional family concept. Analysis shows that client group more higher familism and clients have a low opinion of gender egalitarianism. Thus, social worker may have conflicted with client's family while social worker practices case management or prograss family welfare services. In order to examine the influencing factors on family perception, the defined factors were self-efficacy, family of orgin perception. Controlling for sex, old, marriage on family perception were examined. There were significant effect of old, family-orgin perception to the client's family concept, familism, gender egalitarianism. On the contrary there were significant effect of sex, self-efficacy to the social worker's familism, gender egalitarianism. In conclusion, this study confirmed the difference of family perceptions between social worker and client. But the result of this study suggest that family social work procession or intervention will be investigated concretely.

• Journal of Family Resource Management and Policy Review
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• v.16 no.1
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• pp.67-83
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• 2012

Baby boomers are often defined by their support of their parents and their devotion to their children's educational success by providing financial and emotional aids. Now, 7.12 million baby boomers in South Korea are retiring, or are about to retire, without any retirement plans. Similar to financial stability, health, and leisure life, social capital is another important element in the quality life after retirement. This is because social capital can function as a potential resource network. Social capital is a source that provides money, information, goods, services, emotional aids, social relational opportunities etc. In the past, family and community provided social capital for the aged. However, the baby boomer generation cannot expect the same. The baby boomers have the task of creating new social capital that can assure their quality of life. Therefore, this study examines cohort characteristics of the baby boomer generation and, based on the examination, seeks an alternative for social capital. The results are as follows: First, social capital from the local community can be an alternative source of caring for the baby boomers in old age. Second, among the social capital of the local community, elderly care supported by a family friendly community is proposed. In addition, baby boomers must become the primary social capital that contributes to a mature civil society rather than a beneficiary of welfare for the aged.

• Human Ecology Research
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• v.55 no.4
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• pp.419-431
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• 2017

This study examined the effects of children's shyness and relationships with their teacher in regards to social withdrawal. Two questionnaires were conducted with mothers and teachers of 242 three to five-year-olds attending a childcare center in Sejong city. SPSS 18.0 was used to implement descriptive analyses and hierarchical regression analyses. The results indicated that main effects of lack of sociability and assertiveness as well as interaction effects between lack of assertiveness and intimate relationship on social withdraw were found when the childteacher relationship was intimate. The results suggested that intimate child-teacher relationships adjusted to lack of assertiveness in the child. Meanwhile, interaction effects between lack of sociability and lack of assertiveness and between self-consciousness and child-teacher conflictual relationship were found in child-teacher conflictual relationships. The results indicated that the influence on alleviating social withdrawal behavior of children with a high level of shyness was limited despite establishing a close relationship with a teacher. However, the social withdrawal behavior of children became more intense if they were in a conflict relationship with a teacher; this tendency was also shown more significantly in shier children. This suggests that children's unamicable relationship with a teacher may function as a risk factor to cause social withdrawal behavior. Therefore, it is important that a teacher has the capability to understand the individual characteristics of children, particularly shyness, and encourage their sociability of children through positive relationships.

• Korean Journal of Social Welfare
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• v.65 no.1
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• pp.5-31
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• 2013

The principle objective of this study is to determine factors affecting social participation for physically disabled people with musculoskeletal conditions (spinal cord injury, muscular dystrophy, osteogenesis imperfecta, rheumatoid arthritis) in South Korea using ICF relevant categories of the international classification index by WHO. The subjects of this study 352 people with physical disabilities, the data were collected using ICF component(body functions, body structures, activities and participation and environmental factors) and the relevant categories deprived from ICF core sets. The collected data were evaluated with descriptive analysis, ANOVA, correlation analysis, and multiple regression analysis. The results of this study can be summarized as follow. The mental function, Neuromusculoskeletal and movement-related functions, Genitourinary and reproductive functions, Skin and related structures, Learning and applying knowledge, General tasks and demands, and Mobility positively influenced social participation in people with musculoskeletal conditions. However individual factors and environmental factors didn't statistically significant affect on social participation. The implications of the study is to examine by ICF components of universal approach on disability study and utilized the relevant ICF categories as measurement tools.

• Korean Journal of Social Welfare
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• v.61 no.4
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• pp.61-84
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• 2009

This study is to analyze the nature of mentoring network of single mothers with dependent children and to show the mentoring network effect on mentoring function and empowerment applying social network approach. 439 single mothers with dependent children in Busan and Gyeongsangnam-do have been surveyed about mentoring network properties. The results are 1. The mentoring relationships between single mothers have been shown in various size and relationship characters. The out-degree of Their network is low, the range is narrow, and the tie-strength is weak. 2. When the effect of mentoring network characteristics on mentoring function has been analyzed, in career functions, the range of network and the strength of relationships are represented as significant variables among the mentoring network characteristics, in psychosocial functions, the size of network and the strength of relationships are shown as significant variables, and the inverted-U-shaped relationship according to the size of network has not been revealed. In role modeling function only the size of network is represented as a significant variable. 3. The direct effect of mentoring network of single mothers with dependent children has not been much on empowerment and the career related function among mentoring functions has been revealed as the variable, which affect on empowerment. Based on these results the suggestions and implementations are mentioned in this paper.

• Korean Journal of Culture and Social Issue
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• v.10 no.spc
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• pp.29-45
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• 2004

To understand changing adolescent developmental environment, this paper critically reviewed a) social factors influencing family structure and function and b) outcomes of these changes. Also based on recent research findings of diverse families, this paper presented how individual, familial, and social characteristics are related each other to adolescent development. Based on literature review, new research directions and research issues are discussed.