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그래프 모델과 중심성 분석을 이용한 당뇨환자의 처방 및 검사결과의 상관관계 분석
유강민(Kang Min Yoo),박성찬(Sungchan Park),이수진(Su-jin Rhee),유경상(Kyung-Sang Yu),이상구(Sang-goo Lee) 한국정보과학회 2015 정보과학회 컴퓨팅의 실제 논문지 Vol.21 No.7
본 논문은 11,938명의 당뇨환자 의료데이터를 그래프 모델로 변환하고 중심성 분석 기법으로 처방과 검사결과 간 상관관계를 추출해내는 과정에 대해 다루고 있다. 관계형 데이터베이스로 저장되어있는 데이터를 RDB2Graph 프레임워크를 사용하여 유의미한 그래프로 변환하였다, 변환된 그래프에 Personalized PageRank를 적용하여 처방과 검사 간 상관관계를 분석했다. 사용된 그래프 모델에는 환자 별 의료기록 모델과 의료 기록의 시간적 간격을 고려한 모델이 있다. 분석 결과 기존의 의학적 지식에 부합하는 상관관계를 다수 발견할 수 있었으며, 본 논문에서는 발견한 상관관계 중 주요 사례를 소개하여 본 분석방법의 유효함을 보인다. This paper presents the results and the process of extracting correlations between events of prescriptions and examinations using graph-modeling and node centrality measures on a medical dataset of 11,938 patients with diabetes mellitus. As the data is stored in relational form, RDB2Graph framework was used to construct effective graph models from the data. Personalized PageRank was applied to analyze correlation between prescriptions and examinations of the patients. Two graph models were constructed: one that models medical events by each patient and another that considers the time gap between medical events. The results of the correlation analysis confirm current medical knowledge. The paper demonstrates some of the note-worthy findings to show the effectiveness of the method used in the current analysis.
생존분석을 이용한 중소기업의 장수요인 도출과 육성방안에 관한 실증연구
하태관 ( Tae-kwan ),유왕진 ( Wang-jin Yoo ),이동명 ( Dong-myung Lee ),강민형 ( Min-hyung Kang ) 한국경영공학회 2012 한국경영공학회지 Vol.17 No.3
This study aimed to work out strategies for fostering long-lived small and medium-sized enterprises by making theoretical adjustment of longevity factors through literature review, and by drawing their longevity factors according to research on using logistic regression analysis and Survival analysis. According to the hypothesis, the results were verified as follows. First, longer of the founder tenure and the CEO tenure achieved longer survival time. Second, the internal CEO showed longer survival, in comparison with the external CEO. Third, higher concentration of ownership led to longer survival. Fourth, owner-management showed the survival time longer than professional management. Fifth, unchanged ownership achieved longer survival time. Sixth, dual post succession achieved longer survival time. Seventh, family succession influenced long-term sustainabiliy. Among them, 1st son succession also influenced long-term sustainability at some extent. The suggestions for fostering the longevity of small and medium-sized enterprises are as follows. It is required to set a comfortable ecosystem to foster long-lived small and medium-sized enterprises, establish and support research institutes for them, revitalize in-house societies for longevity, prepare for longevity programs in academic-industrial collaboration. As means of developing and supporting the longevity of small and medium-sized enterprises, moreover, it is required to achieve development and support of items for policy funds, urgent preparation for tax systems, development and support of human resources, support for R&D, technical development, preparations for measures for supporting IPOs of small and medium-sized enterprises
박시현(Si-Hyeon Park),강민이(Min-i Kang),김다현(Da-Hyun Kim),김윤희(Yun-Hee Kim),김태희(Tae-Hee Kim),손아름(A-Reum Son),유송현(Song-Hyeon Yoo),김유린(Yu-Rin Kim) 한국구강보건과학회 2021 한국구강보건과학회지 Vol.9 No.1
Objectives: This study is intended to be used as basic data to enhance the image of dental hygienists by confirming the effect of the importance of dental hygienists on the image of dental hygienists. Methods: Hierarchical regression analysis was performed to determine the effect of dental hygienist importance and dental visit intervals on the dental hygienist image step by step. Results: As factors influencing the dental hygienist image, the younger, the more office workers, the shorter the dental visit interval. the higher the importance of the dental hygienist, the more significant the influence on the dental hygienist image was confirmed. Conclusions: In order to establish a professional image of dental hygienists, we expect continuous publicity that can increase the importance of dental hygienists and an increase in occupational ethics awareness that can increase the professional value of dental hygienists themselves.
이현직(Lee Hyun Jik),유지호(Ru Ji Ho),유강민(Yoo Kang Min) 대한공간정보학회 2007 한국공간정보학회 학술대회 Vol.2007 No.6
최근 사진측량기술과 IT의 발달로 인해 고품질의 데이터의 획득이 가능하게 되면서 고해상도 영상을 이용한 정사영상의 제작과 활용이 증가하고 있다. 일반적인 정사영상은 DEM을 이용하여 편위수정이 수행하기 때문에 건물, 교량과 같은 비고를 가지고 있는 인공지형지물에 대한 기복변위를 완벽하게 제거하지 못하는 문제점을 안고 있다. 이에 본 연구에서는 건물의 기복변위를 제거한 실감정사영상을 제작하기 위하여 수치사진 측량기법과 LiDAR데이터를 이용한 네가지 실험 CASE별로 DSM을 생성하였고, 각 DSM별 정사영상을 제작하여 정확도 분석을 수행하여, 실감정사영상제작에 적합한 DSM 제작 방안을 제시하였다.