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양측 전정병증에서 발견된 정상 와우를 가진 양측 가쪽반고리관 이형성증 1예
이석환,최성원 대한평형의학회 2019 Research in Vestibular Science Vol.18 No.4
A 25-year-old woman presented with atypical dizziness with oscillopsia. The neuro-otological evaluations showed bilateral vestibulopathy with mild sensori-neural hearing loss. Computed tomography and magnetic resonance imaging de-monstrated bilateral isolated lateral canal dysplasia (LSCD) with normal cochlea. LSCD is relatively common inner ear malformation, but it is rarely found in bi-lateral vestibulopathy. In case of patients with bilateral vestibulopathy who cannot find the cause, should be considered conducting radiological examinations in mind of the inner ear anomalies.
성과평가제도의 수용성에 영향을 미치는 요인에 대한 연구
이석환,조주연 서울행정학회 2010 한국사회와 행정연구 Vol.20 No.4
This study explores receptiveness to performance appraisal system based on BSC among public employees at the local level governments. With the focus of two dimensions (appraisal system factors and internal motivation factors), this study examines what should be done to increase the level of receptiveness and to successfully implant the system in an organization. Dividing public employees into two levels(managerial level and lower level), this study suggests managerial implications based on findings.
이석환 동아시아불교문화학회 2025 동아시아불교문화 Vol.- No.69
가마쿠라 시대는 나라와 헤이안불교의 학술, 귀족중심 불교에서 벗어나 새로운 불교운동이 일어났다. 그러나 선종은 중국 송나라에서 발전한 선사상을 받아들여 발전한다. 본 논문에서는 이러한 가마쿠라시대 선불교에 대한 연구동향을 알아보고 불교연구가 활발하게 진행될 수 있기 위한 과제를 제시하였다. 일본 선불교는 중국에서 전래되어 에이사이를 통해 전해졌다. 이후 중국의 임제종, 조동종, 황벽종의 종풍이 수입되어 에이사이(榮西), 도겐(道元), 은원 융기(隠元隆琦)에 의해 발전하였다. 가마쿠라시대 선불교에 대한 연구는 크게 종파와 인물을 중심으로 한 연구와 일본문화에 선종이 끼친 영향을 중심으로 연구되었다. 그 중에서도 역사적인 측면에서 각 종파의 특징과 종조의 사상에 대한 연구가 다수를 차지하고 있다. 시기적으로는 1980년대 까지는 선종의 교학중심, 1990년대 이후부터는 선종이 일본문화에 끼친 영향, 2010년대부터는 문화예술, 과학기술, 다도 등의 다양한 분야와 선의 관계성에 대한 연구가 진행되고 있다. 이와 같은 가마쿠라시대 선불교의 연구동향을 바탕으로 불교연구가 활성화될 수 있는 방법으로 연구지역의 확대, 연구대상과 범위의 확장, 사회문제와 불교에 대한 연구, 다양한 분야와의 공동연구를 제시하였다. During the Kamakura period, new Buddhist movement arise, break away from the Academic Buddhism of Nara Buddhism and Aristocratic Buddhism of Heian Buddhism. However, Zen Buddhism developed by accepting Zen thought that developed in the Song Dynasty of China. Japanese Zen Buddhism was introduced from China and spread through Eisai(榮西). Afterwards, the styles of the Rinzai Sect(臨濟宗), Soto Sect(曹洞宗), and Obaku Sect(黃檗宗) from China were imported and developed by Eisai(榮西), Dogen(道元), and Gin-en(隱元). Research on Zen Buddhism in the Kamakura period has largely focused on Sects and Individuals, and on the influence of Zen Buddhism on Japanese culture. Among them, there is much research on the Characteristics of each Sects and the Ideology of its founder from a historical perspective. Until the 1980s, the focus was on Zen Buddhism's teachings; since the 1990s, research has been conducted on the influence of Zen Buddhism on Japanese culture; and since the 2010s, research has been conducted on the relationship between Zen and various fields such as culture and art, science and technology, and tea ceremony. Based on the research trends in Zen Buddhism during the Kamakura period, the following were suggested as ways to revitalize Buddhist studies: expanding the research area, expanding the research subjects and scope, research on social issues and Buddhism, and joint research with various fields.
이석환 경성대학교 2001 論文集 Vol.22 No.1
The change of the use and physical environment is the concrete expression and adapting process in which the residents select and search after the suitable function and physical form in their settlement. This study aims to understand the changing process of the use, the characteristics of the types in penetrating commercial functions, and the relationship between the change of the use and the physical environment such as street, row house site, and the placement of residence buildings. Under the these aims, it analyzes the changing characteristics of the use in the residential area at Wongokdong in Ansan city both diachronically - from the early 1980th to the 2000 year - and synchronically through the literature study on the change of land use, case study, field study, and observation method. The results are the followings. First, it has the sustainable and complementary relationship between the residential function around it and the neighborhood commercial function. Second, the shops with commensal relationship of the those invading in this area play the role of dominant function. Third, now it shows a stable state in the respect of the changing size and its intensity though it goes through the continuous substitution of the types of shops. Finally, the layout pattern and the hierarchy of adjacent roads influence the degree of the use change.
기하학적 구조 및 위치 보간기를 이용한3D 애니메이션 워터마킹
이석환,권기룡 대한전자공학회 2006 電子工學會論文誌-CI (Computer and Information) Vol.43 No.6
For real-time animation, keyframe animation that consists of translation, rotation, scaling transform nodes is used widely in 3D graphics. This paper presents geometrical watermarking using vertex coordinates in CoordIndex node and interpolator watermarking using keyvalues in PositionInterpolator node for 3D keyframe animation based on VRML. Experimental results verify that the proposed algorithm has the robustness against geometrical attacks and timeline attacks as well as the invisibility. 3D 그래픽에서는 실시간 애니메이션을 위하여 이동, 회전, 스케일링 변환 노드로 구성되는 키프레임 애니메이션이 널리 이용되고 있다. 본 논문에서는 VRML 기반의 3D 애니메이션 상에서 CoordIndex 노드 내에 꼭지점 좌표를 이용한 기하학적 워터미킹 기법과 PositionInterpolator 노드 내에 키 값을 이용한 보간기 워터마킹 기법을 제안한다. 실험 결과로부터 제안한 방법이 각종 기하학적 공격 및 타임라인 공격에 대한 강인성 및 비가시성을 가짐을 확인하였다.