• Journal of the Korean Home Economics Association
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• v.44 no.6 s.220
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• pp.35-45
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• 2006

The purpose of this study is to investigate productive activities effect on psychological well-being in the elderly. As people grow older, the level of physical function and psychological well-being is decreased. But We verified maintaining productive activities could make buffering effect on psychological well-being. And We investigate what kind of productive activities could effect on psychological well-being by gender. As a result, there were differences in self efficacy belief, life satisfaction and depression by age, education, absence of spouse, subjective economic status and physical function. Group activity and domestic labor had on affirmative effect on self efficacy belief in male and female elder. Learning activity had on positive effect on life satisfaction in female. Depression was negative influenced by voluntary activity and domestic labor in female and pay work, group activity and domestic labor in male.

• International Journal of Human Ecology
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• v.8 no.2
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• pp.1-16
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• 2007

The authors examined how Korean housewives manage family resources, make decisions, handle pressures, and negotiate the constraints of everyday life in a society that places unrealistic expectations upon them. The authors approached housewives by imagining them as thinking, strategizing, and problem-solving individuals, who are capable of speaking for themselves and making choices within situational and personal limits. Eleven full-time housewives were interviewed on how they experience their marriages, children, families, and society. Their narratives were then analyzed to sort out the strategies the women employed to maintain their identities. The narratives showed women's will and agency as they worked to resolve the contradictions in their daily life, and revealed individual differences within this group of women who are often seen as homogenous.

• IEMEK Journal of Embedded Systems and Applications
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• v.11 no.6
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• pp.369-377
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• 2016

Recently, many changes have been made to people's life patterns as the technological advances in the ICT industry. The fusion of smart phones and various IT technologies has brought people convenience and welfare. A typical example of such fusion is the smart home. However, the existing smart home systems are difficult to be changed or extended. So we design a new smart home system with extensibility that can easily adopt legacy appliances and be scaled up. Among a variety of smart home features, this paper deals with IoT Devices that are responsible for controlling power or transmitting and receiving sensing values, IoT Gateway that connects users and consumer electronics via Internet, and Smart Home Manager that monitors and controls these components in the proposed smart home system.

• KDI Journal of Economic Policy
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• v.39 no.1
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• pp.83-102
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• 2017

Price control can restore efficiency in some cases, but an uncarefully designed policy fails to restore efficiency, yields side effects, or even exacerbates efficiency losses. This paper shows that the copyright royalty rule, which takes the greater of ad valorem royalties and perunit royalties, tends to fix the prices of final goods at a specific level. Such a rule weakens competition as it prevents prices from decreasing even when market conditions change, having negative effects on social welfare as well as consumer surplus. Counterfactual analyses using estimation results in the Korean online music service industry show that firms could have profitably reduced prices if the ad valorem rule had been applied instead, although they did not have an incentive to do so under the original combination rule.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.61 no.6
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• pp.804-809
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• 2012

This paper presents the economic impact of consumer participation in Real-Time Pricing (RTP). A computer model was developed to analyze the impact of real-time pricing on the average price, electricity sales, and the social welfare. Four revenue reconciliation alternative were introduced to illustrate the effect of RTP. Finally a case study was done to analyze the consequent impact of the dynamic load profile on the long-term fuel mix, and the results were compared with those of $5^{th}$ national power development plan.

• Journal of Family Resource Management and Policy Review
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• v.11 no.4
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• pp.37-53
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• 2007

The purpose of this study was to develop an educational program of leadership for housewives as the CEO of household management. For this purpose, the related concepts of leadership as CEO were analyzed and cases on the educational program for housewives were reviewed. The program developed through this study consists of four subjects: 1. The housewives' identity 2. Household management and the CEO 3. The strategies for the development of leadership and 4. The connection between the individual household, the community, and society. It can be expected that the program will contribute to the activation of various programs in the Healthy Families Center and the strong positioning of research in "family resource management" as a practical science.

• Journal of Family Resource Management and Policy Review
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• v.12 no.1
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• pp.1-20
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• 2008

The purpose of this study is to provide the information for problem solving and development, and to suggest future directions for educational work of HFSC. For this purpose, the annual reports of 40 centers were analyzed and a staff survey was carried out. On the basis of these reports and the survey, the benefits of the educational programs were examined and alternatives for better educational work are suggested.

• Journal of Information Technology Applications and Management
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• v.16 no.3
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• pp.1-15
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• 2009

The paper analyzes a copyright owning firm's incentive to enforce its copyright in the presence of file-sharing networks. I devise a two-period model where a copyright owner sells two different versions of a creator's information good, and show that the firm's overall profits are enhanced by a strategy of differential inter-temporal enforcement of the copyright protection, compared to strategies of no enforcement or full enforcement in both periods. If the firm enforces no copyright protection in the first period, the low-valuation consumers may make and consume copies that are imperfect substitutes for the original information good. If there is a significant increase in the willingness-to-pay of some low-valuation consumers after they experience the information good, the firm can extract the increased consumer surplus by enforcing a positive level of copyright protection in the second period. Social welfare, however, is maximized in the case of no enforcement.

• Journal of the East Asian Society of Dietary Life
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• v.19 no.1
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• pp.116-129
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• 2009

The study was conducted to evaluate consumer awareness of the risk elements associated with foods and their information search behavior regarding food safety. The data were collected from 504 adult consumers living in Seoul, Busan, Incheon, Daegu, Daejeon, and Gwangju through a self-administered questionnaire on August, 2006. Frequency analyses, t tests, one-way analysis of variance, and Duncan's multiple range comparison tests were conducted to analyze the responses using SPSS v. 14.0. The levels of recognition of consumers regarding each risk element were generally low. Many respondents answered that they obtained information regarding food safety from TV/radio/newspapers and family/relatives/friends/neighbors. The respondents also indicated that they had strong confidence in the information from family/relatives/friends/neighbors. Additionally, most respondents required information regarding heavy metal contamination, endoctrine disruptors, and avian influenza.

• STI Policy Review
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• v.8 no.1
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• pp.87-112
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• 2017

This study analyzes patenting practices in the pharmaceutical industry and the impacts of sequential innovation. The main argument of the research is that strategic patenting is common in the pharmaceutical sector and it is legal within the context of patent law. However, when these practices have negative effects on the competition process post-grant, the practices that are legal under patent law may come into conflict with antitrust laws, which are not applied. The study brings into question whether sequential patenting practices characteristic of the pharmaceutical industry encourage or discourage innovation, and moreover, the overall functionality of the patent system. Ultimately, the functionality of the patent system creates market incentives that neglect consumer, i.e., patient, welfare; potential solutions to deal with the shortcomings are discussed.