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정유진,Chung, Yujin 한국통계학회 2020 응용통계연구 Vol.33 No.3
IM 모형(Isolation-with-Migration model; IM model)은 현존하는 집단들의 크기, 그 집단들이 공통 조상 집단으로부터 분리 된 분화 시간, 그리고 현존 집단 간의 이주율을 추정하는 데 널리 사용되는 진화 모형이다. IM 모형과 같은 진화 모형은 그 진화 모형 내 현존 집단으로부터 추출 된 DNA 염기서열을 분석하여 추정할 수 있다. 참인 진화 모형이 데이터가 추출되지 않은 미표본 집단(unsampled population) 혹은 소위 ghost라 불리는 집단을 포함할 때, 종종 이 미표본 집단을 제외한 진화 모델이 추론된다. 본 논문에서는 미표본 집단이 표본집단의 크기 추정에 미치는 영향을 조사하기 위해 모의실험을 수행하였다. 표본집단과 미표본집단 사이에 이주 사건들이 존재하는 경우, 표본집단의 크기의 추정량은 편향되었다. 그러나 미표본집단을 포함한 진화 모델이 추정되면 표본집단의 크기의 추정량은 많은 경우 개선되었다. An Isolation-with-Migration (IM) model is used to estimate extant population sizes, the splitting time of populations split away from their common ancestral populations, and migration rates between the extant populations. An evolutionary model such as IM models is estimated by analyzing DNA sequences sampled from the extant populations in the model. When a true model includes an unsampled 'ghost' population without data, the unsampled population is often ignored from the evolutionary model to infer. In this paper, we conduct a simulation study to investigate the effect of an unsampled population on the estimation of the size of the sampled population. When there exists an unsampled population that shares migrations with the sampled population, the size estimation of the sampled population was biased. However, the size estimation was improved if an evolutionary model, including the unsampled population, was estimated.
정유진(Yujin Chung),허남원(Namwon Heo),이종혁(Jong-Hyeok Lee),김태석(Tai-Suk Kim) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.1B
기존의 한-일 기계번역 시스템 등에서는 합성명사 번역시 별도의 처리과정을 두지 않고 그대로 일본어로 직역하여 변환하는 방법을 채택하고 있다. 이러한 합성명사의 번역 방법은 대부분의 경우 잘 적용되자만, 매우 부자연스러운 일본어 표현이 되는 경우도 많다. 본 논문에서는 이러한 번역 방법이 갖는 문제점을 지적하고 합성명사를 관형격조사로 연결된 명사구로 변환시키는 방법을 제안함으로써 보다 자연스러운 일본어 문장을 생성할 수 있도록 하고자 한다.
정유진 ( Jung Yujin ),이재경 ( Lee Jaekyung ),문다슬 ( Moon Daseul ),박인희 ( Park Inhee ),오인성 ( Oh Insung ),정혜주 ( Chung Haejoo ) 한국사회보장학회 2022 사회보장연구 Vol.38 No.4
Environmental and health inequality experienced by mothers and infants during early child development has a continuous effect on health and development after childhood, and is further exacerbated if there is no appropriate early intervention. Therefore, most countries primarily use the (national) healthcare system and healthcare services to implement early intervention for mothers and infants during the early stages of child development. However, domestic healthcare services have gaps in terms of time, place, and connection between services, and studies comparing and analyzing foreign systems in terms of time, place, and connection are also insufficient. Therefore, this study aimed to suggest ways to improve maternal and child health care services in South Korea by subdividing healthcare services provided in the United States, Japan, Germany, Sweden, and the United Kingdom according to life cycle and type, and comparing and analyzing each dimension. The results of the comparative analysis between countries are as follows: First, all countries (used for comparative study) manage their health through the “in-service” type. Second, the United States, Japan, and Germany mainly managed maternal and child health through clinic and hospital clinic services, while Sweden and the United Kingdom managed maternal and child health through home visiting services. Third, the United States, Japan, and Germany all had gaps in at least one of the temporal (time), spatial (place), and linkage (connection) dimensions, but Sweden and the United Kingdom were excellent in all dimensions. Fourth, all countries demanded a bachelor's degree or higher from home visiting service personnel (providers), and Sweden and the UK demanded high expertise, such as master's degrees, as home visiting personnel played a large role. Therefore, as in the case of advanced countries, Korea needs to reduce various dimensions of inequality through early intervention for early childhood development in order to promote the healthy start and growth of pregnant women and infants.