• Journal of Environmental Health Sciences
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• v.35 no.4
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• pp.269-277
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• 2009

Objective : The objective of this study was to examine how experts and the public perceived various environmental and technological hazards based on psychometric paradigm. Methods : We conducted a survey that included 30 hazards and 10 risk attributes. Subjects of this study were 214 people with three groups; (1) experts (55 people), (2) graduates( 78 people), (3) under graduates (81 people). Factor analysis was used to confirm the common risk attribute from 8 risk attributes. Also, multiple regression analysis was used to identify factors influencing on perceived risk and benefit of hazards. Results : This study revealed that experts tend to be more tolerant than graduates and under graduate students for the 30 hazards. Using factor analysis, two main factors were identified: factor 1, commonly called "Dread Risk", and factors 2, commonly called, "Unknown Risk" in the literature. We identified that environmental hormone concentration and global warming ranked high in both dread risk and unknown risk. Multiple regression models were used to test the association of perceived social risk and perceived social benefit with two main factors. Dread risk had significant explanatory power on perceived social risk and benefit. We identified that the experts were less likely to perceived dread risk and know more information about the hazards. Conclusions : There were differences of risk perception between experts and lay people. Especially, experts' perception of risk was commonly lower than other people's perception.

• Journal of Digital Convergence
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• v.15 no.3
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• pp.319-333
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• 2017

This study is aimed at investigating the factors that influence the profits of Internet personal broadcasting to improve unstable benefit structure. 50 viewers of game broadcasting that includes most of internet personal broadcasting's personalities are surveyed, who are watching the broadcasting everyday more than an hour and backing to a broadcast conductor. For investigating Benefit Structure Analysis of Internet Personal Broadcasting, independent variables are composed of Social viewing experience, Parasocial relationship, and Information seeking motive and mediator is composed of viewing satisfaction that influences dependent variable, purchase intention. As a result the study founds that only two independent variables(Parasocial relationship, Information seeking motive) affect to mediator and viewing satisfaction affected to dependent variable.

• Korean Institute of Interior Design Journal
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• v.26 no.2
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• pp.72-82
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• 2017

Current world population is rapidly ageing and the disabled population is expected to age seriously as well. The concern about the elderly and the disabled is increased largely not just the field of social welfare and service but the housing planning where the physical environment of everyday life is. Recently in Ireland, 'Universal Design Guideline for Homes' is established and proposed in public. It is considered as initial and special national policy for the socially venerable. The purpose of this research is to analyze the User Benefit Characteristics(UBC) of 'Universal Design Guideline for Homes in Ireland' and clearly organize the characteristics for comprehensive communication. The research subjects are 444 guidelines of 'Universal Design Guideline for Homes in Ireland.' The research is conducted by contents analysis technique, and each guideline is analyzed by the 4 main concepts of UBC- 'Behavioral Facilitation(BF)', 'Physiological Maintenance(PhM)', 'Perceptual Maintenance(PM)', 'Social Facilitation(SF).' As results, the User Benefit Characteristic of 'Universal Design Guideline for Homes in Ireland' is ordered by PhM>PM>BF>SF. The design guidelines are supposed to support ageing in place and sustainable living in the existing houses even though people are ageing or being disabled. 'Universal Design Guideline for Homes in Ireland' supports safe behavior and comfort cognition especially in indoor and surrounding outdoor environment. This research is significant for sharing the knowledge and comprehension of decreasing environmental stress of the elderly in specific, and could be utilized for developing new elderly housing in future.

• Journal of Digital Convergence
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• v.11 no.3
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• pp.1-12
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• 2013

Present study examines the gender disparity in terms of its beneficiaries or benefit amount of National Pension of South Korea from the perspective of gender sensitivity. National Pension system has been manipulated and developed in order to maximize its universality. However, substantial gender differences are still found in terms of beneficiary number and benefit amount in the program. Benefit condition and benefit structure are determined assuming that male is the primary breadwinner in household and the primary regular full time worker in labor market. Women are only counted as dependents or excluded as unstable workers. As a result, women are fully or partially excluded from the program as they are excluded in other public sector such as labor market. Women's work (such as caring and housekeeping) are not taken into account in National Pension program. Policy suggestions for the National Pension of South Korea are also provided as the last part of this paper.

• Journal of Electrical Engineering and Technology
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• v.7 no.4
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• pp.501-512
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• 2012

Social welfare maximization in a double-sided auction market is performed by implementing an aggregation-based particle swarm optimization (CAPSO) algorithm for optimal placement and sizing of one Static Synchronous Series Compensator (SSSC) device. Dallied simulation results (without/with line flow constraints and without/with SSSC) are generated to demonstrate the impact of SSSC on the congestion levels of the modified IEEE 14-bus test system. The proposed CAPSO algorithm employs conventional quadratic smooth and augmented quadratic nonsmooth generator cost curves with sine components to improve the accurate of the model by incorporating the valve loading effects. CAPSO also employs quadratic smooth consumer benefit functions. The proposed approach relies on particle swarm optimization to capture the near-optimal GenCos and DisCos, as well as the location and rating of SSSC while the Newton based load flow solution minimizes the mismatch equations. Simulation results of the proposed CAPSO algorithm are compared to solutions obtained by sequential quadratic programming (SQP) and a recently implemented Fuzzy based genetic algorithm (Fuzzy-GA). The main contributions are inclusion of customer benefit in the congestion management objective function, consideration of nonsmooth generator characteristics and the utilization of a coordinated aggregation-based PSO for locating/sizing of SSSC.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.22 no.4
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• pp.181-188
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• 2010

The objectives of this study are to analyze the possibility of the landfill gas recycling for the middle and small scale landfills where the recycling facilities are not installed in Korea. It was found that the power generation plants by landfill gas were installed in domestic 15 landfills and the gas engine generation was adopted in 14 places. As the result of economic analysis, the landfill gas recycling is found to be available in 12 places and CERs of 153,693 $tCO_{2e}$ can be secured per year. Through the reduction of the air pollutants and VOCs, the social benefits of 730 million won accrue per year. Also, the power production of 18.8 GWh will substitute the crude oil imports of 4,048 TOE and the revenue of 2.49 billion won is expected to power trading. It is also found that the power generation plants by landfill gas will give the social benefits such as the reduction of the environmental problems and the substitution effect of crude oil imports.

• Journal of Electrical Engineering and Technology
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• v.6 no.4
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• pp.493-504
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• 2011

The present paper presents a genetic algorithm (GA) to maximize social welfare and perform congestion management by optimally placing and sizing one Thyristor-Controlled Series Capacitor (TCSC) device in a double-sided auction market. Simulation results, with line flow constraints before and after the compensation, are compared through the Sequential Quadratic Programming SQP method, and are used to analyze the effect of TCSC on the congestion levels of modified IEEE 14-bus and 30-bus test systems. Quadratic, smooth and nonsmooth (with sine components due to valve point loading effect) generator cost curves, and quadratic smooth consumer benefit functions are considered. The main aims of the present study are the inclusion of customer benefit in the social welfare maximization and congestion management objective function, the consideration of nonsmooth generator characteristics, and the optimal locating and sizing of the TCSC using real code-based GA to guarantee fast convergence to the best solution.

• Fashion & Textile Research Journal
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• v.14 no.2
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• pp.242-250
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• 2012

This study investigates the benefits consumers seek in buying and using bedding, sub-dimensions of lifestyle, and the relationship between those of the benefits and the dimensions of lifestyle. This study conducted a survey to verify benefits consumers seek in buying bedding. A questionnaire was developed to collect data to measure lifestyle, benefits sought for the bedding, and demographic variables. Research was conducted on married women aged between 20 and 59. Total 294 responses were analyzed using factor analysis, correlation analysis, t-test, and one-way ANOVA with SPSS 18.0. A factor analysis identified three dimensions of benefits sought for the bedding: utilitarian benefits, social benefit, and aesthetic benefit. Lifestyle consists of five dimensions: health seeking, social symbol seeking, leisure/country-living seeking, aesthetics seeking, and economy seeking. All dimensions underlying benefits consumers seek in buying bedding and all dimensions of lifestyle were correlated. As consumers get older, they tend to seek more utilitarian and social/psychological benefits of bedding.

• 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.

• Journal of Korean Society for Geospatial Information Science
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• v.8 no.1 s.15
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• pp.27-42
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• 2000

In this study, a GIS-supported system is used to measure the effect of social infrastructure improvements. Benefit evaluation approach is based on two types of approaches -the simple hedonic approach and Rosen's two step approach. The land attribute data for both approaches are efficiently collected and generated in a GIS-supported environment. Moreover, it conveys more objective and correct data. The benefits are estimated on real locations by using GIS. The potentiality of the developed system for practical application has been verified by its application to Joban New Line in Tokyo metropolitan area. By incorporating benefit evaluation routines into GIS, the proposed system will be a useful tool for decision making on the improvements of social infrastructure.