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변영섭,김기서,안형준,최종훈,권정승,Byun, Young-Sub,Kim, Ki-Seo,Ahn, Hyung-Joon,Choi, Jong-Hoon,Kwon, Jeong-Seung 대한안면통증구강내과학회 2008 Journal of Oral Medicine and Pain Vol.33 No.4
Orofacial pain and limited range of mouth opening as symptoms of temporomandibular disorder are mainly triggered by the structural and/or functional changes of temporomandibular joint and related structure itself. But careful diagnostic evaluation should be needed because they may be occurred by another pathologic conditions such as neoplasm in head and neck region. If there would be atypical pain characteristics or clinical features, systemic comorbid symptoms, or poor response to treatment, advanced imaging modalities such as CT or MRI will be mandatory for differential diagnosis. We experienced the case which was diagnosed as nasopharyngeal cancer mimicking temporomandibular disorder, and reviewed clinical considerations for proper differential diagnosis.
변영섭,정진석,유영진,강범수,석근수,김영기,김은광,김상길 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11
본 논문에서는 웹기반으로 운용 가능한 해상안전 드론의 시스템 통합 및 기술시연 결과에 대해 기술하였다. 해수욕장 안전감시와 인명구조를 목적으로 광학 카메라와 투척식 구명의를 탑재한 소형 쿼드로터드론 플랫폼을 개발하였다. 실시간 영상전송을 위해 상용 LTE 망을 활용한 통신 체계를 구현하였고, 웹기반으로 운용되는 중앙통제 시스템을 구축하였다. 해상안전 드론은 2015년 7월 말부터 시험운항을 시작하였고, 현재 부산 해운대 해수욕장 일대를 중심으로 서비스를 수행 중에 있다. This paper describes the system integration and demonstration results of a web-based operational maritime safety drone. A small size quad-rotor drone platform was integrated with an electro optical camera and a throwable life jacket to support bathing beach surveillance and rescue mission. A communication link was implemented by using commercial LTE module to provide a real-time video streaming, and a web-based central command system was build up. Test flight of the maritime safety drone was started from the end of July 2015, and it is now on service mission in Haeundae beach at Busan.
변영섭,송우진,김정,강범수 한국항공우주학회 2011 한국항공우주학회 학술발표회 논문집 Vol.2011 No.11
This paper describes the procedure of development of a coaxial rotorcraft micro air vehicle for indoor surveillance and reconnaissance mission. The survey to provide a guide for preliminary design were conducted based on commercial off-the-shelf platform, and the rotor performance was estimated by the simple momentum theory. The modified fuel balance method which is adoptable for electric powered vehicle was applied to determine the initial size of the micro air vehicle, and it was optimized with sequential quadratic method. The developed vehicle shows stable handling quality with manual flight test in indoor situation. 본 논문에서는 실내 감시정찰 임무를 위한 동축반전 헬리콥터형 미세비행체의 개발과정을 기술하였다. 기본설계 방향을 제시하기 위해 상용 비행체의 제원을 조사하였고, 간단한 운동량 이론에 의해 공력 성능이 예측되었다. 미세비행체의 초기 사이징을 위해 전동 모터로 구동되는 비행체에 적용 가능한 수정된 fuel balance 기법이 적용되었고, sequential quadratic 기법에 의해 최적설계가 수행되었다. 개발된 비행체는 실내에서 수행된 수동조종 시험에서 안정된 조종성을 나타내었다.
변영섭 고려대학교 역사연구소 2012 사총 Vol.75 No.-
Perfecting of Sa-Ui (寫意, ‘expression of ideals’) is one of the highly pursued artistic achievements in East Asian painting tradition. At the core of those ideals expressed lies the concept of Do (道, ‘the Truth’). As a way of effectively portraying and conveying the ideals of Do, the application of Yeo-Baek (餘白, ‘void space’) is regarded important. This article intends to examine some key issues in understanding the aesthetics of Yeo-Baek. In-depth understanding of Yeo-Baek style makes up a crucial part of the fine art of Dok-Hwa (讀畵, ‘reading a painting’). According to Eastern philosophy, the Truth, or Do, cannot be represented in any language or symbol. This notion is well summarized as ‘the ineffability of Do (道可道非常道)’ in Tao Te Ching (道德經) by Lao Tzu (老子, early 5th century BCE), a leading Chinese thinker. Once you depict something, the depicted image is no longer of the object. In that sense, Yeo-Baek or the void is something ‘depicted without the act of depicting.’ Yeo-Baek is never a fixed, stationary space, but one ‘of dynamic, ever-changing nature, filled with energy’ (氣韻生動). A specific method to present this characteristic of Yeo-Baek is the technique of Hong-Woon-Tak-Wol(烘雲托月), in which, in order to reveal the moon, an artist paints only the surrounding space of the moon, leaving the moon itself untouched. The purpose of such rendering is to achieve ‘the ultimate clear, lucid, and tranquil state’ (空靈). In the East Asian concept of ‘reading a painting’ (讀畵), looking at the painter's brushwork (筆墨) is virtually the same as looking at the empty space or Yeo-Baek of the composition. The brushwork and the empty space are not two separate matters. They are closely interconnected with each other, both philosophically as well as aesthetically. Although often underestimated as mere ‘background’, Yeo-Baek or the void space, which in many cases takes up a large part of the pictorial space, plays a role as significant as that of the brushwork. Thus, the visually empty space in aesthetic sense becomes no longer ‘empty.’The Korean painting tradition has not only exemplified the features of Yeo-Baek, an aesthetic ideal shared in the whole East Asian art tradition, but even went further to intensify and innovate it. In Korean paintings, the effect of Yeo-Baek was made prominent by maximizing the effect of harmonization of a larger space (e.g. one as a main background) and smaller spaces (e.g. ones within objects such as mountains, rocks, tree trunks, and so on). Using a mixture of larger and smaller spaces in a painting composition not only creates the aesthetic effect of providing breezy, fluid, and open feelings to the painting, but also expresses the philosophical notion that each object is not separate from the space or other objects, and that everything, including the space, is all interconnected. It is crucial to note that the Korean painting tradition not merely shares ideals common among the East Asia cultures, such as Sa-Ui and Yeo-Baek, but at the same time, also demonstrates a good number of unique quality and characteristics entirely of its own.