• 자원ㆍ환경경제연구
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• 제31권1호
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• pp.85-112
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• 2022

우리나라의 미세먼지 및 초미세먼지 농도에 대하여 전국 및 지역별 패널 분위회귀분석을 진행하여, 국내 및 중국 요인의 영향력을 분석하였다. 2015년 5월 1일부터 2020년 12월 31일까지 일별 분석을 진행하였으며, 국내 요인으로는 전력수요 및 교통량을, 중국 측 요인으로는 베이징 등 3개 도시의 미세먼지 및 초미세먼지 농도와 서풍의 교차항을 이용하여 패널 분석을 진행하였다. 국내 미세먼지 농도가 높고 낮을 때 국내 요인의 영향력이 다르게 나타났다. 미세먼지 농도가 낮을 때, 전국분석에서 국내 화력발전의 대리변수인 전력수요량은 초미세먼지에 양(+)의 영향력을 미쳤다. 지역별 분석결과, 수도권 및 충청도 지역에서만 전력수요량이 미세먼지 및 초미세먼지에 유의한 영향을 미치는 것으로 나타났다. 반면, 미세먼지 농도가 높을 때, 전력수요량은 미세먼지 및 초미세먼지 농도를 모두 유의하게 상승시키는 것으로 나타났다. 초미세먼지의 경우 그 추정치가 더 높게 나타났다. 반면, 중국 요인의 경우 미세먼지 및 초미세먼지 농도와 관계없이 우리나라에 항시 양(+)의 영향을 미침을 확인하였다. 향후 국내 초미세먼지 문제를 해결하기 위해서는 4계절 항시 국제적 협력이 필요하며, 국내 화력발전으로 인한 초미세먼지 발생분에 대한 감축이 현재보다 강화되어야 함을 확인할 수 있다.

• 아태비즈니스연구
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• 제12권1호
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• pp.87-100
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• 2021

Purpose - This study aims to examine the antecedents of willingness to pay in the domain of duty free shop. Design/methodology/approach - This study chooses willingness to pay as explained variable. The candidates of explanatory variables are price fairness, brand awareness, employee service, product diversity, and crowding. This study uses survey to explore the linear relation between variables. This research collected data using online panel data collection service. The number of valid observation is 265. The research targe is Lotte duty free store. Statistical analysis was for statistical inference. To attain the information of survey respondents, frequency analysis is employed. Next, this study implemented exploratory factor analysis and reliability to ensure both validity and reliability of measurement items. This study executed multiple regression analysis to test research hypotheses Findings - Regrading results, brand awareness, employee service, and product diversity are positively associated with willingness to pay of duty free shop product. Moreover, the results of regression analysis suggest the inverted-U shape association between crowding and willingness to pay. However, price fairness appeared as non-significant variable to account for willingness to pay in the multiple regression analysis. Originality - This study contributes to the literature by examining duty free shop customers more.

• Journal of the Korean Data and Information Science Society
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• 제28권1호
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• pp.195-206
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• 2017

본 연구는 한국보건사회연구원과 국민건강보험공단의 한국의료패널 2011~2013년 연간데이터(beta version 1.0)을 이용해 의료서비스 질 인식에 영향을 미치는 요인을 연도별로 분석하였다. 공통적으로 나타난 결과를 요약하면, 첫째, 의료서비스 질의 영향요인을 확인하기 위해 일반적 특성을 분석 결과는 연령 결혼상태, 교육수준, 주관적 건강상태가 통계적으로 유의한 예측인자로 나타났다. 둘째, 의료이용 관련 특성에 대한 분석 결과를 살펴보면, 미충족의료와 치과이용제한이 의료서비스 질 인식에 통계적으로 유의한 예측인자로 나타났다. 이러한 결과는 향후 의료서비스의 질 향상을 위한 전략 수립에 기초 자료로 활용될 수 있을 것이다.

• 디지털융복합연구
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• 제16권7호
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• pp.19-26
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• 2018

본 연구의 목적은 첫째, 산업재해근로자의 재활서비스 이용실태와 서비스 이용에 대한 욕구가 시간에 따라 어떻게 변하는지 분석하고자 한다. 둘째, 어떤 요인들이 재활서비스 이용 욕구 변화에 영향을 주는지 분석하고 그 결과를 통해 산재근로자를 위한 정책 개선 방향을 제시하는 것이다. 산재보험패널 1~3차 자료 5,004 관측치를 대상으로 STATA를 이용하여 패널회귀분석을 실시하였다. 횡단분석에서 재활서비스 필요정도에 미치는 영향 요인은 연령, 교육연수, 현재 직무수행능력, 지역사회서비스 경험, 재취업, 미취업으로 나타났다. 시간의 변화에 따른 재활서비스 필요정도에 유의미한 영향 요인은 연령, 교육연수, 미취업, 현재 직무수행능력, 지역사회서비스 이용 경험으로 앞의 횡단면 분석과 다르게 나타났다. 따라서 산재근로자의 연령, 학력, 경제활동 형태 등에 따라 재활서비스 내용과 그 필요 정도가 시간에 따라 변한다는 점에서 요양기간 종료 후 초기 개입 내용을 시기별로 점검하고 조정하는 것이 필요할 것이다.

• 수산경영론집
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• 제51권1호
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• pp.81-96
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• 2020

The purpose of this paper is to analyze factors affecting the net income of regional and industrial fisheries cooperatives in South Korea using panel data. This paper utilizes linear or GLS regression models such as pooled OLS model, fixed effects model, and random effects model to estimate affecting factors of the net income of regional and industrial fisheries cooperatives. After reviewing various tests, we eventually select random effects model. The results, based on panel data between 2013 and 2018 year and 64 fisheries cooperatives, indicate that capital and area dummy variables have positive effects and employment has negative effect on the net income of regional and industrial fisheries cooperatives as predicted. However, debt are opposite with our predictions. Specifically, it turns out that debt has positive effect on the net income of regional and industrial fisheries cooperatives although it has been increased. Additionally, this paper shows that the member of confreres does not show any significant effect on the net income of regional and industrial fisheries cooperatives in South Korea. This study is significant in that it analyzes the major factors influencing changes in the net income that have not been conducted recently for the fisheries cooperatives by region and industry.

• 한국자동차공학회논문집
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• 제18권1호
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• pp.74-85
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• 2010

In order to formulate the compounded polypropylene(C-PP) which is suitable to an automotive door trim panel, 9 sorts of properties were measured after manufacturing the C-PP using an extruder and an injection machine with polypropylene(PP), ethylene-octene rubber(EOR) and talc. Mixture design, especially extreme vertices design, in DOE with MINITAB - commercial software was used to analyze the data. The relations between each property and each component, for example, $y=0.00907222x_1+0.00870556x_2+0.0155722x_3$ for specific gravity, were found out by the regression analysis and the variance analysis. The optimized formulation of the C-PP for an automotive door trim panel was acquired at PP(77.6962), EOR(11.0238) and talc(10.2800) by use of the response optimizer(mixture) in MINITAB.

• 보건의료산업학회지
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• 제14권1호
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• pp.137-146
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• 2020

Objectives: The aim of this study was to investigate cognitive function decline by socio-demographic and health-related characteristics (health behaviors and health status) using 5th Korean Longitudinal Study of Aging panel data. Methods: The subjects were 4,440 community-dwelling people aged over 57 years. The data were analyzed with descriptive statistics, frequency analysis, χ²-test, and binary logistic regression analysis using SPSS ver. 25.0. Results: The findings revealed that socio-demographic characteristics (gender, age, area of residence, educational level, marital status, number of children, number of grand-children) and health-related characteristics (smoking, drinking, regular exercise, weight category by body mass index, hypertension and diabetes mellitus) were factors that influenced cognitive function decline (p<.05). Conclusions: Cognitive function decline was closely related to health behaviors and disease types. Future studies must examine related constructs to accurately determine these relationships among various populations. The present study could be used as a tool for the development and implementation of health promotion and prevention strategies.

• 가정간호학회지
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• 제27권2호
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• pp.189-197
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• 2020

Purpose: The purpose of this study was to examine the relationship between sleep duration, quality of sleep and depression, and to identify the factors associated with depression in middle school students. Methods: This study used a cross-sectional design with secondary data, middle school student panel data from the Korean Children and Youth Panel Survey (2018), and data from a total of 2,590 students was used for analysis. For the statistical analysis, t-test, ANOVA, and hierarchical multiple regression were performed using SPSS ver. 26. Results: The mean depression score in adolescents was 17.99±6.38. Depression had significant differences according to sleep duration and quality. Adolescents with less than eight hours of sleep showed the highest depression, and poor sleepers showed higher depression scores than good sleepers. Gender, school achievement, school satisfaction, economic status, and exercise time were found to significantly relate to depression. After controlling for general characteristics, depression explained 17.2% of the variance in quality of sleep (β=-.15, p<.001) and sleep duration (β=-.04, p=.022). Conclusion: These findings indicate that it is necessary to develop intervention strategies to enhance the quality of sleep and appropriate sleep duration for preventing depression in adolescents.

• The Journal of Asian Finance, Economics and Business
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• 제7권8호
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• pp.705-714
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• 2020

This study aims to investigate the main factors that affected the government health expenditures in Gulf Cooperation Council (GCC) countries (Kingdom of Saudi Arabia (KSA), United Arab Emirates (UAE), Oman, Qatar, Bahrain and Kuwait), during the period from 2005 to 2019. The study employs a panel data technique in order to monitor the pooled determinant variables of healthcare expenditures in these countries. The study's results indicate, by using FMOLS approach for panel data, that the average healthcare expenditures per capita in GCC countries have a positive and a significant relationship with the government revenues, the size of the population, and the governments' public debt. The positive and the significant relationships of governments' public debt may be explained even if the governments of the GCC countries suffer from a budget deficit; the GCC countries continue to increase the healthcare expenditure. The study suggests that the policymakers of the GCC countries must take into consideration those variables when they develop their healthcare policies. Also, the GCC countries urgently need to have high levels of foreign exchange reserves to maintain the expected level of spending on the healthcare sector, because their public revenues depend mainly on the oil revenues, which are fluctuating continuously.

• 한국학교ㆍ지역보건교육학회지
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• 제18권3호
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• pp.45-53
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• 2017

Objectives: This study aimed to analyze the association between adolescent depression and personal factors such as interpersonal relationship and personal characteristics. Methods: The data used for this study was taken from the 2014 Korean Children and Youth Panel Survey. Of those 2,351 subjects in a data set, data of 1,938 subjects were analyzed after excluding 413 subjects with missing information. Hierarchical regression analysis was conducted for multi-variate analysis. In addition, controlling effects of ego-resiliency was analyzed. SPSS 22.0. was utilized for statistical analyses. Results: The study found that the depressive index was higher in women than men, and lower in adolescent who has a good relationship with parents and friends. This study also found that adolescents with high ego-resiliency are more vulnerable to depression. Conclusions: It is recommended to understand and to utilize ego-resiliency of adolescents, in order to reduce adolescents depression. Promoting good relationship with parents and friends will also positively impact to lower adolescents depression.