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공항산업 동향분석을 위한 텍스트 애널리틱스 모델에 관한 연구
남승주(Seungju Nam),최솔샘(Solsaem Choi),김준환(Junhwan Kim),김진기(Jin Ki Kim) 한국경영과학회 2020 經營 科學 Vol.37 No.1
Analyzing current trends and identifying future prospects is one of the important tasks to establish a successful strategy for airport development. In this study, we use latent Dirichlet allocation (LDA), a typical topic modeling technique, to supplement the traditional qualitative methodologies and find a major trend of airport industry. Specifically, we deduct major topic from three different data sources related to airport (academic article, policy study report and news article) and compare each topic to find out the differences of each topic. In addition, we investigate the changing trend in each data source through longitudinal analysis. Our results show that three data sources have distinguishing trends which reflect their own characteristics. We find that most of data usually focus on the future situation for sustainable development rather than concentrating on the current issues. This study suggests a methodology using large amounts of text data to explore future promising trend from sperate data sources and provide insights for stakeholders of airport industry. The analyzing methodology we proposed has also significant meaning in that it can be applied comprehensively for trend analysis of other industry including tourism and hospitality as well as airport industry.
부모・자녀의 이중부양부담이 기혼여성의 출산의사에 미치는 영향
이승주(Lee, Seungju),이소민(Lee, Somin),문승현(Moon, Seunghyun) 한국가족학회 2017 가족과 문화 Vol.29 No.3
본 연구에서는 자녀양육 및 부모부양 부담이 출산의사에 어떤 효과를 미치는지를 살펴보고, 시부모 및 친정부모의 부양부담이 현재 자녀수와 향후 출산의사 간의 관계에서 어떠한 효과를 미치는지 상호작용효과를 검증하고자 하였다. 이에 여성가족패널(Korean Longitudinal Survey of Women & Families) 1-5차 자료를 분석대상으로 하여 이항로짓모형(Binary Logit Model)을 활용하여 분석을 시행하였다. 분석 결과 상호작용효과를 제외한 모형과 상호작용효과를 포함한 모형 모두에서 독립변수인 자녀수가 통계적으로 유의미한 수준에서 향후 출산의사에 부(-)적 영향을 미치는 것으로 나타났다. ①상호작용효과를 제외한 모형과②시부모 부양여부와 현 자녀수간의 상호작용변수만을 투입한 모형, ③시부모 부양여부와 현 자녀수, 친정부모 부양여부와 현 자녀수간의 상호작용 변수를 모두 투입한 모형에서 시부모 부양여부 및 친정부모 부양여부가 모두 출산의사에 통계적으로 유의한 정(+)적인 영향을 미치는 것으로 나타났다. 반면 현 자녀수와 노부모부양의 조절효과를 살펴본 결과 시부모 부 양여부와 현 자녀수의 상호작용변수만이 출산의사에 부(-)의 유의미한 영향을 미치는 것으로 나타났다. 이는 자녀수가 증가할 경우 시부모와 같이 동거하는 경우가 그렇지 않은 경우보다 출산의사에 부정적인 영향을 미칠 확률이 높다는 것을 의미한다. 본 연구결과 친정부모이든 또는 시부모이든 믿고 안심할 수 있는 육아 조력자로서 노부모가 가정에 존재하는 경우 출산의사에 긍정적인 반응을 보이는 것으로 볼 때 반드시 노부모를 부양하고 있다고 해서 자녀양육과 노부모 부양의 이중부담으로 인해 출산율에 부정적인 영향을 주는 것은 아닌 것으로 판단된다. 다만 시부모를 부양하는데 있어서는 친정부모를 모실 때와는 다르게 자녀 양육에 대한 부담감과 시부모 부양의 부담이 결합하여 가중됨으로써 향후 자녀 출산의사에 부(-) 적 영향을 미치는 것으로 나타났다. This study examines what the relationship between the current number of children within family, the presence of elderly care burden, and future childbirth intention would be and whether and how, if any, the influence of the number of children within household on future childbirth intention could be moderated by the presence of elderly care burden, such as living with parents-in law or parents for support. Utilizing the merged data(1st∼5th waves) from the Korean Longitudinal Survey of Women & Families, the binary logit analysis was conducted. According to the result, the number of children within family as an independent variable has a negative effect on the future childbirth intention in all the tested models including and excluding the moderating variable. In model 1, 3, and 4, which test only the relationship between the dependent and independent variables, an interaction effect of the number of children within family and the dummy variable of living with parents-in-law for support, or interaction effects of the number of children within family and the living with parents-in-law or parents for support variable, the dummy variable of living with parents-in-law or parents for support is positively associated with the future childbirth intention. On the other hand, the interaction effect of the number of children within family and living with parents-in-law for support is proven to be statistically significant in both model 3 and 4. These results can be interpreted as follows: the more number of children within household is currently present, the less likely married women are to have a future childbirth intention; however, even when parents-in-law or parents are living with married couples and lay a elderly care burden on them, they are more likely to have a future childbirth intention. Meanwhile, when examining the moderating effect of the dummy variable of living with parents-in law or parents on the relationship between the number of children and the future fertility intention, we learn that the interaction effect of the number of children and the moderating variable would exacerbate the situation of the future childbirth intention. That is, more kids means much less likely to have a further childbirth intention when married women live with parents-in-law to support.
The Effects of Glehnia littoralis on the Inflammatory mediators in Mouse Macrophage Cells
Yoon Taesook,Cheon Myeongsook,Lee A-Yeong,Choi Goya,Kim Seungju,Moon Byeongcheol,Choo Byungkil,Kim Hokyoung 한국한의학연구원 2008 한국한의학연구원논문집 Vol.14 No.3
Glennie littoralis (Umbelliferae) is the medicinal plant used traditionally for treatment of immune-related diseases. Prostaglandins and nitric oxide (NO) have been implicated as important mediators in the processes of inflammation and carcinogenesis. For understanding the mechanisms for pharmacological activities of Glehnia littoralis, we evaluated the inhibitory activity of Glehnia littoralis on lipopolysaccharide (LPS)-induced prostaglandin E₂ (PGE2) and NO production in mouse macrophage RAW264.7 cells. The results showed that the extract of Glehnia littoralis inhibited LPS-induced PGE₂ production effectively, but not NO. Additional study revealed that the extract of Glehnia littoralis suppressed cyclooxygenase-2 (COX-2) expression in a dose-dependent manner. Present study suggests that Clehnia Iittorslis may have anti-inflammatory and/or cancer chemopreventive activity through the inhibition of PGE₂ production by the suppression of COX-2 activity.