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      • IGS 전리층 보정정보를 이용한 한반도 상공 전리층 기울기 변화 분석

        허윤정,이은성,허문범,Heo, Yun-Jeong,Lee, Eun-Seong,Heo, Mun-Beom 한국천문학회 2012 天文學會報 Vol.37 No.2

        육상, 해양, 항공 등의 응용분야에 위성항법보강시스템의 활용을 위해서는 시스템의 정확성, 무결성, 연속성, 가용성 요구 조건을 만족하도록 설계되어야 하며, 무결성 요구 조건을 만족시키기 위하여 측위 오차 및 위협 요인들을 지상국에서 감시해야한다. 특히, 전리층 변화는 지역적으로 경향 및 세기가 달라 전리층 폭풍 발생 시 지상국과 이동체에서 받은 위성항법 신호에 포함된 전리층 지연 오차의 편차가 심하여 위성항법 사용자의 무결성, 즉 안정성이 위협을 받는 상황이 발생할 수 있으므로, 해당지역의 전리층 변화에 대한 사전 정보를 통해 지역별로 적합한 위협 모델을 구성하여 전리층 활동 감시가 필요하다. 전리층 기울기는 전리층 지연값 분포의 불균일 여부를 정량화한 값으로, 전리층 폭풍 발생시 기울기가 급증하여 전리층 폭풍 감지를 위한 지표로 활용될 수 있다. 이 연구에서는 육상 교통 위성항법보강시스템의 무결성 감시에 전리층 변화 기능을 적용하기 위한 기본 연구로 IGS에서 제공하는 전리층 보정정보를 이용하여 한반도 상공에 대한 전리층 기울기 분포 및 변화 경향을 파악하고, 이러한 분석 결과를 전리층 기울기에 대한 보정정보 오차범위 설정이나 전리층 폭풍 발생 판단에 필요한 임계값 설정 등에 적용하고자 한다.

      • KCI등재

        Complete trisomy 14 mosaicism: first live-born case in Korea

        허윤정,Taegyu Hwang 대한소아청소년과학회 2012 Clinical and Experimental Pediatrics (CEP) Vol.55 No.10

        Trisomy 14 mosaicism is a rare chromosome disorder characterized by delayed development, failure to thrive, and facial dysmorphism. Only approximately 30 trisomy 14 mosaicism cases have been reported in the literature because trisomy 14 is associated with early spontaneous abortion. We report a case of a 17-month-old girl with abnormal skin pigmentation, delayed development, facial dysmorphism, and failure to thrive with the 47,XX,+14/46,XX chromosome complement.

      • 뮤지컬 「Guys & Dolls」와 「How To Succeed in Business Without Really Trying」의 현대성에 대한 고찰

        허윤정 한국연기예술학회 2013 연기예술연구 Vol.5 No.1

        Largely a product of the 20th century, the American musical as we now know it is the first theatrical form developed in the U.S. The changes the form has undergone are in many ways reflections of the political, social, cultural, and ultimately metaphysical changes the world went through over the last century. In the history of the musicals the single most influential musical was <Oklahoma!>, the first collaborative work of Richard Rodgers and Oscar Hammerstein II, which had its premiere in 1943. It is the show that ushered in what many musical theater scholars refer to as the golden age of the Broadway musical - from the mid 1940s to the mid 1960s. <Oklahoma!>'s most important influence was its structure meaning the book must be the spine from all the other element of a show grow organically, thus elevating the level of the musical from a mere popular entertainment to the regular form of art. However, until 1960's when Abe Burrows appeared, despite efforts of Rodgers and Hammerstein, the Broadway musical still remained a stereotyped format with hollow optimism in happy ending. Burrows is now best known as a librettist of Broadway musical plays like <How to Succeed in Business Without Really Trying>, which received the prestigeous Pulitzer Prize, <Guys & Dolls>, <Silk Stockings>, <Can-Can> and one straight play <Cactus Flower>. The present paper focuses on Burrow's two representative musical works, <Guys & Dolls> and <How to Succeed in Business Without Really Trying> and tries to analyze those musical plays to prove that they succeeded in achieving what might be called musical theater realism until finally attaining the level of modern dramatic view of life. The premiere of <Guys & Dolls> on Broadway was in 1950. It ran for 1200 performances and won the Tony Award for Best Musical. Perhaps the most durable of all American musical comedies, it is so tightly written, has such vibrant characters and at the same time its intentionally contrived happy ending suggest that the newly wed's future might not be as bright as it looks when the hero catches cold from the heroine right before the curtain falls. Burrow's next hit musical, <How to Succeed in Business Without Really Trying>, a parody of corporate climbing and opportunism, was about as far from a Rodgers and Hammerstein's naive optimistic theme as could be imagined. It was a study in cynicism as uncompromising for a broadway musical as it was unprecedented. The musical opened at the 46th Street Theatre on Broadway in October 1961, running for 1,417 performance. .

      • KCI등재

        Secondary paroxysmal dyskinesia associated with 2009 H1N1 infection

        허윤정,황태규 대한소아청소년과학회 2013 Clinical and Experimental Pediatrics (CEP) Vol.56 No.1

        Neurological complications associated with 2009 H1N1 infection in children have been reported and recognized worldwide. The most commonly reported neurological complications are seizures and encephalopathy. Secondary movement disorders are also associated with the infection, but such cases are rarely reported. Here, we describe the case of a 14-year-old boy with paroxysmal kinesigenic dyskinesia secondary to 2009 H1N1 infection, who presented with dystonia and choreic movement triggered by sudden voluntary movement.

      • KCI등재

        인공지능 미술작품과 매체 지각

        허윤정 한국디지털정책학회 2022 디지털융복합연구 Vol.20 No.5

        The purpose of this study is to find out what kind of media perception can be experienced by the audience when artificial intelligence technology meets art, where new technologies are invented one after another. Among the artificial intelligence works, I selected works that stand out in relation to perception and investigated what kind of media perception the audience experiences when artificial intelligence technology meets art. By examining the characteristics of machine hallucinations, uncanny, and artificial empathy with the media perception of artificial intelligence art, these perceptions were ultimately identified as aura perception within family resemblance. In the future, artificial intelligence technology will develop further and artists will not stop experimenting with them. It is expected that the works created by artists will expand the audience's perceptual experience while providing new experiences to the audience. 본 연구의 목적은 새로운 기술들이 속속 발명되는 오늘날 인공지능 기술이 예술과 만나 어떠한 매체 지각을 수용자로 경험케 하는지 알아보고자 하는 것이다. 인공지능 작품들 중 지각과 관련되여 부각되는 작품들을 위주로 하여 인공지능 기술이 예술과 만나 어떠한 매체 지각을 수용자로 경험케 하는지 알아보았다. 인공지능 미술의 매체 지각으로 기계 환각, 언캐니 그리고 인공 공감의 특성을 규명하면서 이러한 지각들이 결국은 가족유사성 안에서 아우라 지각임을 규명하였다. 앞으로 인공지능 기술은 더욱 발달하게 되고 예술가들은 그들의 실험을 멈추지 않을 것이다. 예술가들에 의해 생성된 작품들은 새로운 경험들을 관객에게 제공하면서 관객들의 지각 경험을 확장 해 가리라 기대해 본다.

      • Synthesis and Characterization of Oxime-esters Derivative for Free Radical Photoinitiators

        허윤정,송광식,백정주,장기철,김영훈,박성만,김영랑,배근열,이효선,최경호,신교직 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1

        In the past few decades, photo initiator play an essential role for photopolymerization and photocuring for use in a variety of applications, such as dental industry, 3D printing and microelectronics. Among the several photo initiator, oxime esters consisted of N-OR bond have been considered as the efficient materials. For oxime esters, N-O bond of oxime esters is cleavage to produce active free radical in high yield. Already, two oxime esters derivatives, such as OXE-01 and OXE-02, is commercially used in color filter resist to cure the pigments. However, to further extend the application of oxime ester initiators, efforts to control of absorption spectrum should be attempted by designing new materials. Herein, we synthesize the benzophenone based oxime-esters for free radical photo initiators. The chemical structure of synthesized oxime-esters is analyzed by <sup>1</sup>H-NMR, GC-Mass and FT-IR. The optical properties is investigated by UV-vis absorption.

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