• International Commerce and Information Review
• /
• v.17 no.3
• /
• pp.379-402
• /
• 2015

The purpose of this study is to determine whether there is a significant difference in impacts decomposed into scale effects and technique effects on $CO_2$ emissions between Greenfield FDI and M&A FDI flows into Korean manufacturing sectors, ultimately leading to clarify the relationship between FDI and environmental pollution. To this end, the research constructed a simultaneous model to analyze coincidental relationship of influence and interactions between each variable. Archival data, spanning the 15 years period from 1995 to 2009, is industry-level panel data on 13 Korean manufacturing sectors, and it is empirically analyzed with three-stage least squares (3SLS) method. Key findings can be summarized into two parts. First of all, Greenfield FDI has a greater impact on increasing industrial gross output, resulting in more $CO_2$ emissions than M&A FDI through scale effects. Secondly, technique effects of FDI have a bigger impact on $CO_2$ emissions than scale effects, implying that this inflow of FDI into Korea contributes positively to the reduction of $CO_2$ emissions. These findings are expected to play a meaningful role in establishing FDI policies with consideration of the environment by giving the implication that different incentives for each FDI type should be considered to maximize the effect of environmental protection.

• Korean Journal of Childcare and Education
• /
• v.10 no.4
• /
• pp.159-176
• /
• 2014

This study aims to examine the suggestions by studies that family predictors are related to developmental outcomes more strongly for children reared principally by their parents compared to those with extensive child care experience. Zero-order correlations between family predictors and developmental outcomes were conducted and the significance of differences in correlation coefficients between the two child care groups were examined. There was no evidence that there exist systematic differences between the two groups in predictive power of family factors except a few exceptions. At 2 years, social parenting style was more strongly associated with communication ability in the extensive child care group. At 3 years, some HOME subscales were related to a child's expressive and receptive vocabulary skills in significantly greater magnitudes in the mother care group. The findings also implied the potential contribution of child care environment on developmental outcomes for those who spend extensive hours in nonmaternal care.

• The Journal of the Korea Contents Association
• /
• v.17 no.6
• /
• pp.504-513
• /
• 2017

This study investigated one of the controversial issues on debate or even controversial between policy makers at the government and corporate levels: To examine any financial determinants on the cash holdings of the firms in the advanced and emerging capital markets. Futhermore, it focused on the large representative firms headquartered in the U.S. and the Republic of Korea, taking into account scarcity of the previous literature concentrated on the comparative studies on this particular subject. Several legitimate, but robust econometric estimations such as static and dynamic panel data models and Tobit regression, were applied to investigate possible financial factors ono the cash liquidity. Given the continued debates or arguments on the excess cash reserves between interest partied at the government and corporate levels in the advanced and/or emerging capital markets, and more accelerated capital transfers among associated nations by engaging in the arrangements of the FTAs, the results of the study may provide a vision to search for the optimal level of corporate cash holdings for firms in the two nations.

• Proceedings of the Korean Vacuum Society Conference
• /
• 2013.08a
• /
• pp.81-81
• /
• 2013

반도체, LCD, MEMs 등 미세 전자소자의 제작과 깊은 관련이 있는 IT 산업은 자동차 산업과 함께 세계 경제를 이끌고 있는 핵심 산업이며, 그 발전 가능성이 크다고 할 수 있다. 이 중 반도체, LCD 공정 기술에 관해서 대한민국은 세계를 선도하여 시장을 이끌어 나가고 있는 실정이다. 이들의 공정기술은 주로 높은 수율(yield)을 기반으로 한 대량 생산 기술에 초점이 맞추어져 있기 때문에, 현재와 같은 첨예한 가격 경쟁력이 요구되는 시대에서 공정 기술 개발을 통해 수율을 최대한으로 이끌어 내는 것이 현재 반도체를 비롯한 미세소자 산업이 직면하고 있는 하나의 중대한 과제라 할 수 있다. 특히 반도체공정에 있어 발전을 거듭하여 현재 20 nm 수준의 선폭을 갖는 소자들의 양산이 계획 있는데 이와 같은 나노미터급 선폭을 갖는 소자 양산과 관련된 CD (critical dimension)의 감소는 공차의 감소를 유발시키고 있으며, 패널의 양산에 있어서 생산 효율 증가를 위한 기판 크기의 대형화가 이루어지고 있다. 또한, 소자의 집적도를 높이기 위하여 높은 종횡비(aspect ratio)를 요구하는 공정이 일반화됨에 따라 단일 웨이퍼 내에서의 공정의 균일도(With in wafer uniformity, WIWU) 및 공정이 진행되는 시간에 따른 균일도(Wafer to wafer uniformity)의 변화 양상에 대한 파악을 통한 공정 진단에 대한 요구가 급증하고 있는 현실이다. 반도체 및 LCD 공정에 있어서 공정 균일도의 감시 및 향상을 위하여 박막, 증착, 식각의 주요 공정에 널리 사용되고 있는 플라즈마의 균일도(uniformity)를 파악하고 실시간으로 감시하는 것이 반드시 필요하며, 플라즈마의 균일도를 파악한다는 것은 플라즈마의 기판 상의 공간적 분포(radial direction)를 확인하여 보는 것을 의미한다. 현재까지 플라즈마의 공간적 분포를 진단하는 대표적인 방법으로는 랭뮤어 탐침(Langmuir Probe), 레이저 유도 형광법(Laser Induced Fluorescence, LIF) 그리고 광섬유를 이용한 발광분광법(Optical Emission Spectroscopy, OES)등이 있으나 랭뮤어 탐침은 플라즈마 본연의 상태에서 섭동(pertubation) 현상에 의한 교란, 이온에너지 측정의 한계로 인하여 공정의 실시간 감시에 적합하지 않으며, 레이저 유도 형광법은 측정 물질의 제한성 때문에 플라즈마 내부에 존재하는 다양한 종의 거동을 살필 수 없다는 단점 및 장치의 설치와 정렬(alignment)이 상대적으로 어려워 산업 현장에서 사용하기에 한계가 있다. 본 연구에서는 최소 50 cm에서 최대 400 cm까지 플라즈마 내 측정 거리에서 최대 20 mm 공간 분해가 가능한 광 수광 시스템 및 플라즈마 공정에서의 라디칼의 상태 변화를 분광학적 비접촉 방법으로 계측할 수 있는 발광 분광 분석기를 접목하여 플라즈마 챔버 내의 라디칼 공간 분포를 계측할 수 있는 진단 센서를 고안하고 이를 실 공정에 적용하여 보았다. 플라즈마 증착 및 식각 공정에서 형성된 박막의 두께 및 식각률과 공간 분해발광 분석법을 통하여 계측된 결과와의 매우 높은 상관관계를 확인하였다.

• Korean Journal of Social Welfare Studies
• /
• v.45 no.3
• /
• pp.237-262
• /
• 2014

Little is known about the relationships among adolescents'academic stress, self-efficacy, and internalization externalization. Much less is known about whether there is gender differences in the relationships. This study aims to examine (1) the effects of academic stress on internalization externalization, (2) whether self-efficacy mediates the relationships between academic stress and internalization externalization, and (3) whether there is gender difference in the relationships. For these purposes, we used Structural Equation Modeling and multi group analysis involving 2,844 middle school students participated in the Korean Youth Panel Survey. The results are as follows. First, adolescent's academic stress affected internalization externalization. Second, self-efficacy mediated the relationship between academic stress and internalization externalization. Finally, the multiple group analysis results indicated that the path coefficient between academic stress and internalization of girls was significantly greater than that of boys. Based on these results, we discussed theoretical and practical implications and suggested directions for future research on academic stress coping processes among adolescents.

• 한국노년학
• /
• v.40 no.4
• /
• pp.781-800
• /
• 2020

This study aims to categorize the daily time use of older adults into different types, examine the factors influencing them and the differences between them by type, and verify the effect of each type on life satisfaction. From the 6th wave of the Korea Retirement and Income Study (KeRIS), analysis was conducted on 3,963 older adults aged 65 (n=3,963). Using Latent Profile Analysis (LPA), three types of daily time use for older adults were identified: basic life maintenance type (16%), free-leisure oriented type (26%), and social activity type (58%). From the results of multinomial logistic regression analysis to identify the factors influencing each type of daily time use, it was found that the main factors influencing free-leisure oriented type, when compared with basic life maintenance type, were the presence of spouse (p<.01) and psychological health status (p<.001). The main factors influencing social activity type, when compared with basic life maintenance type, were age (p<.05), economic activity (p<.001), and chronic disease (p<.001). The life satisfaction seen during free-leisure oriented time and social activity time was higher than that during basic life maintenance time. From these findings, practical and policy proposals were suggested to improve life satisfaction of older adults during basic life maintenance time by pursuing changes in the use of that time.

• Korean Journal of Social Welfare Studies
• /
• v.41 no.2
• /
• pp.67-99
• /
• 2010

Previous studies indicate that depression is strongly correlated with suicide, suggesting that individuals with higher levels of depression are more likely to commit suicide. Statistical data, however, show that depression is more prevalent among females whereas suicidal incidents are much higher among males. Using the 1st Seoul Welfare Panel Data, this study aims to examine the association between depression and suicidal attitudes and further examine whether there is gender and age difference in the relationship. Sample consists of 7,396 individuals aged 18 and over. Research questions were answered through the structural equation modeling(SEM) and multi-group SEM. The results showed that (1) depression is significantly associated with suicidal attitudes, replicating the previous findings, (2) the association was much higher among males than females, suggesting that depressed males are more vulnerable to suicide than depressed females, and (3) the gender difference was primarily caused by the group of women aged 65 and over. Based on these findings, implications for theory and practice were discussed.

• Journal of Digital Convergence
• /
• v.16 no.8
• /
• pp.361-371
• /
• 2018

This study is an empirical study on the effect of wellness factors on the quality of life and subjective happiness of disabled workers, and aims to contribute to living a healthy life by experiencing wellness in the real life. This study used raw data of the 8th employment panel survey for the disabled, and explored factors such as physical wellness, emotional wellness, social wellness, cognitive wellness, and occupational wellness through exploratory factor analysis. And the wellness factors have a significant effect on the quality of life and subjective happiness of the disabled workers. The results showed that the five wellness factors had a positive (+) effect on the quality of life and subjective happiness of the disabled. Also, the quality of life has a significant effect on subjective happiness. In conclusion, it was confirmed that the quality of life and subjective happiness were improved only when the wellness of the disabled workers was increased. In the future, it is necessary to develop a wellness program suitable for the type of disability and to develop indicators that can be applied to real life situations.

• The Journal of the Korea Contents Association
• /
• v.14 no.5
• /
• pp.244-250
• /
• 2014

Recently, the Diabetes Mellitus is the major cause of death in Korea. According to the results of v 2011, 34% of adult(over 19 years) are diagnosed as a DM and 21.5% of the aging(over 65 years) are also DM. So in this study, we find out the status of DM prevalence among old people and related factors. Using the results, we will suggest several ways to prevent DM. We use Korean Longitudinal Study of Ageing(2006, version1.2)that those diagnosed with Diabetes Mellitus. We carried out X2 test and Binary Logistic Regression by IBM SPSS 19. 65~79 ages (p=0.006, OR=1.482), Urban people (p=0.008, OR=1.366), People diagnosed with Hypertension (p<0.001, OR=1.237), have high probability of Diabetes Mellitus. However, Subjective health condition(good) (p=0.005, OR=0.648), Subjective health condition(normal) (p<0.001, OR=0.335), and People diagnosed with Chronic lung disease (p=0.002, OR=0.778) have low probability of diabetes. Based on the study results, politic proposals were disccused.

• The Journal of the Korea Contents Association
• /
• v.14 no.8
• /
• pp.207-219
• /
• 2014

Recognizing the lack of empirical study that evaluates the influence of social care services on care sufficiency of individuals with disability, we have focused our study on the following research questions: What is the level of care sufficiency for individuals with disability?, What is the profile of care for individuals with disability from both formal and informal providers?, What are the service use conditions and determinants of social care service use?. This study analyzed data of 1204 individuals with disability who needed daily assistance from 5th wave of Korea Welfare Panel Study. Results showed that 50% of the respondents experienced care deficit. 77% of the respondents received no care from informal care providers and 90% from formal care providers. Despite social care services brought by the expansion of socialization of care, the average number of social service use on care was less than 1, which suggests that socialization of care did not significantly contribute to care sufficiency. In addition, for people who are 64 or younger, social care services was substituted by care from informal care providers and for those who are 65 or older, social care services supplemented care from informal care providers.