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내시경적으로 제거한 식도의 과립 세포 종양 -증례보고 및 국내 문헌 고찰-
하종,이옥재,조활석,정태식,윤지향,이은정,민현주,김태효,정운태,조중현 대한소화기내시경학회 2003 Clinical Endoscopy Vol.26 No.2
Granular cell tumor is a benign tumor, commonly found in the skin, tongue, and breast but rarely in the esophagus. A 44-year-old man was referred from the private clinic because of an esophageal lesion found on endoscopy. Esophagoscopy revealed a white-yellowish polypoid lesion covered with normal looking mucosa in the upper esophagus. It was movable within the wall by pushing with forceps. Endoscopic polypectomy after ligation with elastic "O" band was performed without complication. Histologic diagnosis of granular cell tumor was made. It was stained strongly positive for S-100 protein. Another 20 cases of esophageal granular cell tumors reported in Korean literature were reviewed. (Korean J Gastrointest Endosc 2003;26:84-89) 과립세포종은 양성 종양으로 피부, 구강, 유방 등에서는 흔하지만, 식도에서는 드물게 발생한다. 저자들은 식후 상복부 불편감으로 위내시경 검사를 받은 후 식도의 점막하종양을 발견하고 내원한 44세 남자에서, ‘O’형 밴드 결찰술을 이용한 용종절제술을 시행하고 조직학적으로 과립세포종으로 확진하였기에 국내의 문헌고찰을 중심으로 보고한다.
구 볼록 다각형들의 최대 교차를 찾기 위한 효율적인 구 분할 방식
하종성 한국CDE학회 2001 한국CDE학회 논문집 Vol.6 No.2
The maximum intersection of spherical convex polygons are to find spherical regions owned by the maximum number of the polygons, which is applicable for determining the feasibility in manufacturing problems such mould design and numerical controlled machining. In this paper, an efficient method for partitioning a sphere with the polygons into faces is presented for the maximum intersection. The maximum intersection is determined by examining the ownerships of partitioned faces, which represent how many polygons contain the faces. We take the approach of edge-based partition, in which, rather than the ownerships of faces, those of their edges are manipulated as the sphere is partitioned incrementally by each of the polygons. Finally, gathering the split edges with the maximum number of ownerships as the form of discrete data, we approximately obtain the centroids of all solution faces without constructing their boundaries. Our approach is analyzed to have an efficient time complexity Ο(nv), where n and v, respectively, are the numbers of polygons and all vertices. Futhermore, it is practical from the view of implementation since it can compute numerical values robustly and deal with all degenerate cases.
모바일 쇼핑동기가 뷰티 어플리케이션의 속성과 채택에 미치는 영향
하종경(Jong-Kyung Ha) 한국콘텐츠학회 2021 한국콘텐츠학회논문지 Vol.21 No.9
본 연구는 20대 소비자를 대상으로 뷰티제품의 모바일 쇼핑동기와 애플리케이션 속성을 분석하고 모바일 쇼핑동기가 뷰티 어플리케이션의 속성과 어플리케이션의 채택에 미치는 영향을 분석하였으며 그 결과는 다음과 같다. 첫째, 모바일 쇼핑동기는 유희성, 편리성, 충동성으로 구분되었으며 뷰티 어플리케이션 속성은 콘텐츠, 커뮤니티, 지속적 관리로 분류되었다. 둘째, 모바일 쇼핑동기는 선호하는 뷰티 모바일 어플리케이션 채택에 유의한 영향을 미치는 것으로 나타났는데 유희성은 뷰티 전문브랜드 앱과 뷰티쇼핑몰 앱에, 충동성은 온라인 종합 쇼핑몰 앱과 뷰티커뮤니티 앱에, 편리성은 TV홈쇼핑 기반 앱에 영향력이 있는 것으로 나타났다. 셋째, 모바일 쇼핑동기는 뷰티 어플리케이션 속성에 유의한 영향을 미치는 것으로 나타났다. 콘텐츠 속성에는 유희성, 편리성, 충동성이 유의한 영향이 나타났고, 커뮤니티 속성에는 유희성이, 지속적 관리에는 충동성이 영향력이 있는 것으로 나타났다. This study attempted to analyze the influence of mobile shopping motivation on the attributes and selection of beauty applications among consumers in their 20s, and the results found the following: First, mobile shopping motivation was classified into the categories of playfulness, convenience, and impulsiveness while beauty application attributes were divided into contents, community, and continuous management. Second, mobile shopping motivation was found to have a significant influence on selection of mobile beauty applications. Specifically, playfulness affected professional brands and beauty shopping mall apps, while impulsiveness revealed an effect on online shopping malls and beauty community apps. In addition, convenience showed an influence on TV home shopping apps. Third, mobile shopping motivation had a statistically significant effect on beauty application attributes. Specifically, playfulness, convenience, and impulsiveness revealed a statistically significant influence on contents, while playfulness also affected beauty communities. In addition, impulsiveness affected continuous management.