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서원석,최지아,정형철,조형준,Seo, Won-Seok,Choi, Jee-A,Jeong, Hyeong-Chul,Cho, Hyung-Jun 한국통계학회 2010 응용통계연구 Vol.23 No.6
임상시험을 위한 표본 수 산정방법에 대해 지금까지 많은 방법이 개발되었고 현재 국내외 임상시험 기관에서 이 방법들을 토대로 표본 수를 산정하고 있다. 하지만 마이크로어레이칩 을 이용한 실험에 필요한 표본 수 산정에 대한 연구는 아직 미비하여 제대로 이용되지 않고 있다. 본 연구의 목적은 마이크로어레이 실험에 필요한 표본 수를 산정하는 데 있어 실제 마이크로어레이 자료의 재현성에 대한 정보를 이용하여 그 지침을 제공하는데 있다. 재현성 비교에서는 5가지 검정방법 즉, Fold change, Two-sample t-test, Wilcoxon rank-sum test, SAM, LPE 방법 별로 재현성을 측정하였다. 발현 값의 표준화 방법에 있어서는 MAS5, RMA 두 가지로 세분화 하였으며 반복수에 따라 상위 20개 또는 100개 유전자에 대한 일치성도 측정하였다. 또한, 표본수를 산정하는데 있어 기존에 제시한 방법에 현실적인 정보를 이용하여 좀 더 세분화하여 실험에 필요한 표본수를 산정해 보았다. A number of methods have been developed to determine sample sizes in clinical trial, and most clinical trial organizations determine sample sizes based on the methods. In contrast, determining sufficient sample sizes needed for experiments using microarray chips is unsatisfactory and not widely in use. In this paper, our objective is to provide a guideline in determining sample sizes, utilizing reproducibility of real microarray data. In the reproducibility comparison, five methods for discovering differential expression are used: Fold change, Two-sample t-test, Wilcoxon rank-sum test, SAM, and LPE. In order to standardize gene expression values, both MAS5 and RMA methods are considered. According to the number of repetitions, the upper 20 and 100 gene accordances are also compared. In determining sample sizes, more realistic information can be added to the existing method because of our proposed approach.
공공임대주택 거주유형에 따른 생활 및 사회환경 특성 비교
서원석 ( Wonseok Seo ),김찬혁 ( Chanhyuk Kim ) 한국부동산원 2022 부동산분석 Vol.8 No.3
Given that the a policy for public rental housing which could integrate various types of public housing into one has been in full swing, it is important to identify the characteristics of residents' living and social environments according to the types of public rental housing and compare differences of them. In this respect, this study investigated the characteristics of residents' living and social environments among public rental housing types with ANOVA, post-hoc analysis, and the multinomial logistic analysis. The main findings are as follows. First, a positive (+) relationship occurred between trust and social interaction with neighbors. Second, living environment for health showed different characteristics according to public rental housing types. Third, social interaction was relatively weak for residents of permanent rental housing. Fourth, residential satisfaction also was significantly lower in permanent rental housing than others. Fifth, residents of permanent rental housing had a characteristic that denied habitation mingled with different economic classes. Sixth, permanent rental housing had more negative characteristics in light of living and social environments. Based on these results, this study reviewed the implications for long-term public rental housing policies.
서원석(Won Seok Seo),이주영(Choo Yung Lee) 한국호텔관광학회 2002 호텔관광연구 Vol.4 No.1
Our study seeks to provide empirical evidence regarding the extent to which fast-food restaurant brands have established clear and distinct brand personalities in the minds of consumers. We applied Aaker`s brand personality approach to identify key points of differentiation between fast-food restaurant brands. To test for differences among brands on each of the five personality dimensions (competence, sincerity, excitement, shophistication, and ruggedness), we used ANOVA. The major result of this study is that McDonald`s is perceived as being more exciting brands than other brands and Buger King is seen as being more sophisticated than other brands.
영업장 환경개선으로 인한 카지노 서비스 품질 고객만족과 건전화 효과분석에 관한 연구
서원석(Won Seok Seo),봉미희(Mi Hee Bong),이민재(Min Jae Lee),최미선(Mi Seon Choi) 한양대학교 관광연구소 2015 觀光硏究論叢 Vol.27 No.2
본 연구는 운영 측면에서 비효율성을 야기 시킬 뿐만 아니라 고객만족을 감소시키는 원인이 될 수 있는 영업장 환경을 개선한 강원랜드를 중심으로 영업장 환경개선으로 인한 고객만족 증대 및 건전화 효과를 실증분석 하였다. 서비스 품질 부분 효과 분석 결과 대부분의 항목에서 두 집단간에 유의한 차이가있는 것으로 나타났다. 건전화 부문 효과 비교 분석 결과 11개의 항목 중 4개 항목에서 두 집단 간에 유의한 차이가 있는 것으로 나타났다. 이러한 분석결과를 바탕으로 영업장 운영을 위한 전략과 중장기 건전화 방안 등의 시사점을 제시하고자 한다. In this study, we examined a empirical study about the impact of working environment improvement on a customer satisfaction in a casino service quality focused on the Gangwon Land. Working environment improvement could cause inefficiency from an operational perspective and reduce customer satisfaction. As a result of partial effects analysis in service quality, it showed that there was a significant difference in the most of items between the two groups. A result of partial effects analysis in normalization sector showed that there was a significant difference in the four items of eleven items. Based on these results, we proposed the implications of such strategies for casino operations and normalization plans in the middle and long term.
서원석(Seo Won seok),양광식(Yang Kwang Sik),김태경(Kim Tae Kyung) 한국지역개발학회 2011 韓國地域開發學會誌 Vol.23 No.4
The purpose of this study is to provide a scheme of socially cohesive regional development strategy at local level. For that, this study uses the concept of pro-poor growth considering the positive relationship between economic growth and social equity to find the suitable strategy of socially cohesive regional development in regard to reducing poverty group during economic growth. As a result, this study concludes with some suggestions to facilitate the strategy, such as (1) cultivating work-integration social enterprise, (2) considering gender mainstreaming, (3) enhancing social welfare system, (4) organizing local-based citizen association, (5) constructing multi-regional development council, and (6) developing regional stewardship.