• Journal of Environmental Science International
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• v.26 no.2
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• pp.221-230
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• 2017

To determine the effect of air pollution reduction policies, the long-term trend of air pollutants should be analyzed. Kolmogorov-Zurbenko (KZ) filter is a low-pass filter, produced through repeated iterations of a moving average to separate each variable into its temporal components. The moving average for a KZ(m, p) filter is calculated by a filter with window length m and p iterations. The output of the first pass subsequently becomes the input for the next pass. Adjusting the window length and the number of iterations makes it possible to control the filtering of different scales of motion. To break down the daily mean $PM_{10}$ into individual time components, we assume that the original time series comprises of a long-term trend, seasonal variation, and a short-term component. The short-term component is attributable to weather and short-term fluctuations in precursor emissions, while the seasonal component is a result of changes in the solar angle. The long-term trend results from changes in overall emissions, pollutant transport, climate, policy and/or economics. The long-term trend of the daily mean $PM_{10}$ decreased sharply from $59.6ug/m^3$ in 2002 to $44.6ug/m^3$ in 2015. This suggests that there was a long-term downward trend since 2005. The difference between the unadjusted and meteorologically adjusted long-term $PM_{10}$ is small. Therefore, we can conclude that $PM_{10}$ is unaffected by the meteorological variables (total insolation, daily mean temperature, daily mean relative humidity, daily mean wind speed, and daily mean local atmospheric pressure) in Busan.

• Journal of the Korean Home Economics Association
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• v.45 no.2
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• pp.23-31
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• 2007

The purpose of this study was to investigate relational commitment variables-trust & commitment- effect on long-term relationship between domestic apparel firms & cooperative companies. Also this study was to examine the significant of the relationship among communication, conflict, satisfaction, & trust & commitment. The data used to teat the model were collected in a survey from 172 domestic apparel firm's outsourcing managers & was analyzed by confirmatory factor analysis & path analysis. The major results of the study were summarized as follows: 1. Communication & conflict were found to be significantly related to the satisfaction. Also, communication hade a negative effect on conflict. 2. Satisfaction was found to be significantly related to trust & commitment. & the more trust the firms had with their cooperative companies, the more commitment the firms had in the outsourcing. 3. Trust & commitment were found to be significantly related to the long-term relationship.

• The Research Journal of the Costume Culture
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• v.18 no.5
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• pp.1048-1061
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• 2010

The purpose of the study was to compare the culture and the clothing value between Korean and American college students, especially men. Also, this study was to analyze the culture effect on the clothing value. The survey was performed and 200 questionnaires were utilized for this study. The SPSS 12.0 was used to analyze the technical statistics like average, frequency, t-test, factor analysis, multiple regression analysis. The result showed, first, there were some 2 major cultural differences such as power distance and long-term orientation between Korean and American college men. Comparatively, Korean college men showed higher masculinity and lower power distance and long-term orientation. Second, there were differences in the clothing value aspect. Both of them considered the economic clothing value to be most important. Third, there were some differences in the clothing value because of the cultural differences. For Korean college men, there were masculinity and long term orientation that had an effect on the social and religious clothing values, however, for American college men, power distance, masculinity and long term orientation that had an effect on the social, religious, theoretical and economic values.

• Korea Trade Review
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• v.42 no.4
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• pp.49-68
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• 2017

This paper investigates the spillover effect of the U.S. Interest on Korea's interest rate as well as the role of exchange rate in the spillover effects, by utilizing a open macro model on the determinants of long-term interest rates. According to the cointegration estimation and the Impulse response function, it is found that, across both long-term and short-term, there exist the spillover effect of the U.S. Interest on Korea's interest rate. The fiscal deficit and expected exchange rate have significantly positive relationship with the Koreas's long-term interest rate. Further, foreign exchange market intervention in Korea did not have significant effect on the spillover effect. Thus, this study suggests that exchange rate flexibility would not be enough to restrain the spillover effects of the U.S. interest rate.

• Health Policy and Management
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• v.23 no.2
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• pp.132-144
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• 2013

Background: The purpose of this study was to analyze the medical expense change and influencing factors after introducing longterm care insurance system. The study period was 2 years before and after introduction of the system. Methods: We analyzed data collected from two divided group lived in Incheon. Four hundred and eighty-five elderly who received long-term care wage for one year were selected for experimental group. For control group, 1,940 elderly were selected by gender and age stratified random sampling. Difference-In-difference analyses was used for evaluating policy effectiveness. Also multiple regression analyses were conducted to identify the factors associated with total medical expenditures. The control variables were demographic variables, economic status, diseases, and medical examination variables. Results: Difference-in-difference analyses showed that total average medical expenses among long-term patients has decreased by 61.85%. Of these, the hospitalization expenses have decreased by 91.63% and the drug expenses have increased by 31.85%. Multiple regression analyses results showed that total average medical expenses among long-term patients have significantly decreased by 46.5% after introducing the long-term care insurance. The hospitalization expenses have significantly decreased by 148.5%, whereas the drug expenses have increased by 53.6%. And outpatient expenses have increased by 10.4%, but the differences were not statistically significant. Conclusion: The results showed that total medical expenses and hospitalization expenses have decreased after introducing the long-term care insurance. These results could support the opinion that the health insurance spending among long-term patients will be reduced gradually by long-term care insurance through changing medical demand.

• Journal of Internet of Things and Convergence
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• v.6 no.4
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• pp.39-48
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• 2020

This study intends to the estimate the determinants and state dependence of long-term care services in Korea. For this purpose, we analyzed the transition patterns among three states of long-term care service utilization over time by using the Korea Welfare Panel Study data with the random effect multinomial logit model. It is found that the result showed a strong state dependence in long-term care service utilization. Especially, long-term care insurance for the elderly showed a strong state dependence among others. Among the individual demographic characteristics, the higher the age, the higher the probability of using long-term care insurance for the elderly, while the lower the probability when married. The characteristics of the residential region showed that the residents of the urban-rural integrated region had a significantly higher probability of using long-term care insurance than the reference region. The results of this study suggest that the long-term care service users have a strong state dependence, which means that it is important to take into account the increase in the utilization period of existing users in future demand forecasting.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.30 no.4
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• pp.343-350
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• 2017

The RC flat plate system has benefits such as a short construction time, an improvement of workability and a floor height reduction. In the case of long span slab, cracking damages and large deflections tend to occur due to the low flexural stiffness of flat plates. Specially, over-loading by self-weight of slab during construction increases short and long-term deflections. These problems may be solved by the use of void slab that has benefits of the reduced self-weight. In this study, to analyze an effect of self-weight reduction of void slab on slab deflections, the parametric study is performed. Including variable conditions such as a concrete strength, a slab construction cycle, the number of shored floors, a compressive reinforcement ratio and a tensile reinforcement ratio, slab construction loads and deflections are calculated by considering the construction stages, concrete cracking, and long-term effects. The short-term deflections during construction and the long-term deflections after construction of both of normal and void slabs are compared and the effects of void slab on the reduction of slab deflections are analyzed.

• Journal of the Korea Convergence Society
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• v.9 no.4
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• pp.341-349
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• 2018

In this study, the effect of chronic pain on the lives of elderly people in long-term care service was analyzed based on the mediated effect of depression. The research data was sampled from elderly people in long-term care services, 204 people participated. From mediated regression analysis, depression was the most relevant factor on the quality of life, followed by chronic pain. With chronic pain and depression as independent variables and quality of life as a dependent variable, depression was proved to have had a fully mediated effect on quality of life. The result of this study suggested that convergence of various support systems should be implemented for the elderly in long-term care services.

• Health Policy and Management
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• v.30 no.1
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• pp.92-99
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• 2020

Background: The purpose of this study is to analyze the effect of the income support allowance policy for the care workers on wage level. Methods: The analysis data was constructed using database (DB) of long-term care institution, DB of long-term care personnel status, and DB of health insurance qualification and contribution possessed by National Health Insurance Services. We analyzed the wage status of care workers 2009 to 2016 through basic analysis. We used the difference-in-difference analysis method for the workers who worked in the same institution from 2012 to 2013, The effects of the income allowance policy on wage increase were analyzed. Results: As a result of the net effect of the income support allowance policy, the monthly average wage of the care worker increased by 25,676 won and the hourly wage increased by 478 won. As a result of the analysis, it can be confirmed that the income support allowance policy has achieved some of the goals of raising the wage level of the care workers, and the effect of raising wages for other occupations in the long-term care business can be confirmed. Conclusion: The low wage problem of long-term care workers such as care workers is not the only problem in Korea. In other countries, there are various wage support policies for employees. In particular, it is necessary to refer to the improvement in the treatment of care workers in Japan and wage pass-through in the United States. In addition to wages, there is a need to promote policies to provide employment motivation through efforts to improve their social status and improve their job status and career development for employees in long-term care facilities.

• The Journal of the Korea Contents Association
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• v.19 no.4
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• pp.63-78
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• 2019

The objective of this study is to verify the effects of private banking(PB) relation marketing on relationship quality between bank and customer and long-term business intention and to verify the mediating effect of the relationship quality. The subjects of this study were 431 PB customers in Seoul. The questionnaire data were utilized for verification of hypotheses through structural equation model analysis. As a result of verification, PB relation marketing presented a statistically significant positive correlation with relationship quality between bank and customer. The PB relation marketing showed a significant positive effect on the long-term business intention with the mediating effect of the relation quality. Finally, the result of this study is meaningful in a point of view of PB relation marketing of bank on the relationship quality and long-term business intention. It is worthwhile to verify the mediation effect of the relationship quality.