• Journal of applied mathematics & informatics
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• v.26 no.1_2
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• pp.337-347
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• 2008

Based on social welfare maximum theory, the optimal scale of power plants entering generation power market being is researched. A static non-cooperative game model for short-term optimization of power plants with different cost is presented. And the equilibrium solutions and the total social welfare are obtained. According to principle of maximum social welfare selection, the optimization model is solved, optimal number of power plants entering the market is determined. The optimization results can not only increase the customer surplus and improve power production efficiency, but also sustain normal profits of power plants and scale economy of power production, and the waste of resource can also be avoided. At last, case results show that the proposed model is efficient.

• Journal of Technology Innovation
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• v.11 no.2
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• pp.195-217
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• 2003

Since the early 1990s, cluster-based policies have been celebrated as the basis of successful regional industrial and technological development strategy by encouraging regional innovation and technological spillover. Most recently, the Korean government has also begun to seek to initiate some strategies for promoting industry clusters. However, it is problematic that the cluster policies still focus on attracting related firms and establishing supporting agencies and physical infrastructures rather than improving social and institutional dimensions for cluster development such as social capital, networks, social learning capabilities, the governance of regional innovation. In this paper we attempt to elucidate social and institutional dimensions for cluster development and suggest some policy agenda to promote innovative cluster.

• The Journal of Fisheries Business Administration
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• v.12 no.2
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• pp.73-100
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• 1981

Fisheries resources, due to their intrinsic biological -density dependent, and socio- economic -common property nature, might yield the sustained benefits to the society involved, depending on the degree to which the social management scheme, pursuing the optimum yield from each of them, is framed. And besides, the success or failure of the management on them would, with no doubt, lead parallelly to the direction on scientific study of "Natural Resource Economics." Thus the objectives of the management, to ensue the best use of these society's resource, should underlie the technical, economic, ana social efficiency all together to meet the maximization of society's benefits from yields, taking account of managerial efficiency. And those multiple conflicts need communications between biologists, social scientists, and managers given tile mandate, tobe coordinated to arrive at a unique value weighed, through the well-ordered system approach and resulting timely decision-making which accommodates dynamical fisheries aspects and varying social purposes. purposes.

• International Journal of Human Ecology
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• v.7 no.1
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• pp.121-129
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• 2006

This study investigates the impact of the shared environment of pregnant women and their unborn child on the later emotional and behavioral characteristics of a child, extending into his or her adulthood. Using a sample of some 16,000 children from the National Child Development Study, the study demonstrated a positive relationship between the quality of the maternal environment and later emotional and behavioral performances during childhood and adulthood. These findings support the study hypothesis, suggesting that parenting environment such as mother‘s employment, husband’s social class and the mother‘s smoking habits during pregnancy has an affection on the later emotional and behavioral development of the child. The dimensions of the child’s emotional and behavioral well-being may be enhanced by therapeutic interventions and/or by helping pregnant women to develop a positive social network.

• Journal of the Korean Society of Clothing and Textiles
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• v.8 no.3
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• pp.9-17
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• 1984

This study was designed to determine some of the socioeconomic and social-psychological determinants of homemker's clothing satisfaction according to location(urban, rural). Multiple regression analysis, t-test, ore-way ANOVA, and Duncan's test were employed to analyze the data. The Results were: 1. Social-psychological variables more influenced on the homemaker's satisfaction with her clothing than socioeconomic variables without the difference of location. 2. There was a difference in stepwise diecending order of importance according to location. 3. Social-psychological variables were influenced by socioeconomic variables, expecially in rural location. 4. There were differences in clothing satisfaction, social-psychological variables and socioe-conomic variables according to location.

• Korean Journal of Human Ecology
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• v.9 no.3
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• pp.283-295
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• 2000

The purpose of this study was to examine the relationships among parent-adolescent communication, adolescents self-esteem, social development, and home environment. Home environment includes sex, father's vocations, mother's employments, parents educational level, and religions. 275 adolescents (186 males and 89 females students) were selected from middle schools in Seoul. The results indicated that there was no significant difference in parent-adolescent communication, adolescents self-esteem and social development according to environmental factors, such as parents' age, educational level, and religions. Also adolescents self-esteem was highly correlated with parent-adolescent communication, especially with mother-adolescent open communication. Finally, adolescent development of sociality was highly correlated with parent-adolescent communication, but not significant relationship with mother-adolescent reverse-functional communication.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.66 no.1
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• pp.23-26
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• 2017

Social Welfare is useful concept for evaluating the effectiveness of an economic policy in micro economics. This paper focuses on Social Welfare(SW) of electricity market incorporating demand response(DR). Competition between DR and generation company is modeled as a simple bid function. DR function can be considered as an negative generation(called Negawatt) and as an element of modified demand function. These two approaches result in the same demand reduction, generation power, and the market price. However, SW in the modified demand function approach is not identical to SW in the Negawatt approach. It makes the numerical index of DR effectiveness less persuasive. This paper proposes modified definition of SW in the demand function approach. The proposed definition of SW leads the DR effectiveness index to be identical to that in the Negawatt approach.

• Asia Marketing Journal
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• v.26 no.1
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• pp.1-10
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• 2024

This study explores incomplete decision-making dynamics on reward-based crowdfunding platforms, focusing on temporal and social factors influencing backers' decisions. Utilizing the temporal aspect (i.e., pledging campaign phase) and social aspect (i.e., current pledged amount ratio) as stimuli within the stimulus-organism-response framework, our findings reveal that nearly 50.9% of respondents change their initial decisions, highlighting widespread incomplete information processing. Backers are more prone to altering decisions under heightened time pressure and display herding behaviors. Furthermore, backers exhibit an increased likelihood of changing decisions under heightened time pressure, coupled with a greater chance that the pledged goal amount will not be achieved. The study discusses theoretical and practical implications.

• Journal of Korean Home Economics Education Association
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• v.16 no.4 s.34
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• pp.107-126
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• 2004

The purpose of this study is to suggest some activation plans of vocational home economics high school education by analyzing the actual conditions of vocational home economics high school education and surveying teachers and students' recognition and their needs toward the present vocational home economics high school education. The data were collected through reference analysis. questionnaire and interview method. They were analyzed using SPSS. The outline of this study was as follows: First. some data for examining the development trends of vocational home economics were collected especially in terms of the social and economical change related to vocational home economics education. the development of vocational home economics education based on the current curriculum. and some trends of vocational home economics education in foreign countries. Second. the real conditions of vocational home economics high school education were analyzed according to the real conditions of curriculum management in vocational home economics high schools. Based on this result. a questionnaire was designed to survey teachers and students' recognition and their needs. The items consisted mainly of the curriculum management and satisfaction of school life. Third. some activation plans of vocational home economics high school education were proposed in terms of management system(3 items). curriculum management(5 items). security of teachers and their expertise(4 items). and administration and finance(3 items).

• The Journal of Asian Finance, Economics and Business
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• v.7 no.1
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• pp.279-290
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• 2020

Informal networks between individuals are widely seen as important in East Asian business systems. However, while the performance implications of guanxi in China have been extensively studied, much less is known on how informal networks may influence business outcomes in other East Asian countries. We examine informal networks in inter-organizational research collaborations in South Korea by studying the role of pre-existing social ties and relational orientation in new product development (NPD) collaborations and university-industry research (UIR) collaborations. We conduct an interview-based, in-depth case analysis of five NPD collaborations and five UIR collaborations. Pre-existing social ties and relational orientation are prevalent in both types of research collaborations. However, they have different consequences for collaboration outcomes. Pre-existing social ties strongly vary in their types and strength, and negatively affect collaboration outcomes unless they result in the selection of competent and motivated partners. Relational orientation manifests itself in a task-related and social exchange between collaboration partners, which contributes to outcomes such as knowledge acquisition and business performance. Korean collaboration managers should rely only on pre-existing social ties that are well-aligned with task-related requirements when initiating and conducting research collaborations. However, the creation of strong relationships between collaboration team members of partnering organizations should be encouraged.