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간농양 (肝膿瘍) 19예의 초음파상에 (超音波像) 관한 연구
박경남 ( Kyung Nam Park ),이동후 ( Dong Hoo Lee ),이재익 ( Jea Ik Lee ),최웅환 ( Oung Whan Choi ) 대한소화기학회 1981 대한소화기학회지 Vol.13 No.2
N/A With newly available means of diagnostic imaging, liver abscess, a potentially fatal disease, has been known to show a tendency of decreasing in incidence and its mortality by the advanced development of chemotherapy. By virtue of no-invasiveness and possibility to determine whether a lesion is cystic, complex or solid, ultrasonography has recently been advocated as a useful, safe and rapid diagnostic device for detection of liver abscess. The objective of this study was to evaluate ultrasonography in the diagncsis of liver abscess, including the visualization of site of the abscess and its characteristically diagnostic appearance. Ultrasonography of nireteen patients with proven intrahepatic abscesses seen in the past a couple of year were retrospectively investigated. Of these 19 patients, 9 were pyogenic and 8 were of amebic origin but remaining 2 were of mixed nature. Solitary lesion was notable in the majority of patients but 3 of 19 patients had multiple lesions. Ten of these 19 patients showed the lesion on the right lobe and 7 were of the left lobe; remaining 2, on the both lobes of liver. Space occupying lesion was noticed in 94.7% of ultrasonogaphy and 80% of Au-198 colloid, scans. Diagnostic accuracy by ultrasonographic examination was 78.9%. In four cases ultrasonographic diagnosis could be made in follow-up examination at two-four days intervals. In three cases the reported ultrasound diagnosis was that of hepatoma, where the final diagnosis was liver abscess. One cases were ultrasonically misinterpreted as parenchymal liver disease the multiple microabsceses of the liver did not show a remarkable evidence of abscess but diffuse alteration in hepatic texture of ultrasonogram. In an attempt to find helpful or even diagnostic pitfalls, we have demonstrated certain characteristics which could be defined as ultrasonographic features of liver abscess. Hypoechoic internal echo, poorly defined abscess wall rather than well defined one, distal acoustic reinforcement in post-posterior wall aspect of abscess and peripheral echo-free halo with accentuated echoic center so called target configuration representative conceivably of necrotic tissue debris frequently mistaken as hepatoma, were diagnostic stigma of liver abscess which revealed variable shapes of round, ovoid, ellipsoid and irregular character,
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OSMU전략에 따른 게임산업 동향 및 발전방안-영상콘텐츠를 중심으로-
송현진 ( Song Hyun Jin ),최보아 ( Choi Bo Ah ),이재익 ( Lee Jea Ik ) 한국디자인트렌드학회 2007 한국디자인포럼 Vol.15 No.-
본 연구에서는 최근 크게 대두되고 있는 영화, 애니메이션, TV드라마를 게임화 한사례를 조사 분석하여 OSMU전략에 따른 게임산업 동향을 파악하였다. 또한 문화콘텐츠 개발분야의 일반적인 개념이 되어가고 있는, 원소스 멀티유즈의 개념이 게임산업분야에 어떠한 형태로 응용되었으며, 이러한 시도들이 가져오는 파급효과에 대해서 연구하였다. 연구결과, 초기 사업전략 구축에 있어서 기획, 마케팅, 홍보에 이르기까지 일관성 있게 제작된 게임의 성공 확률이 높았으며, 게임화에 있어서 발매시기가 중요했다. 또한 제작기술이 고급이 아니더라도 인기와 관심이 있는 시기에 게임의 사용가치가 높았다. 앞으로는 제작단계부터 게임에 대한 원소스 멀티유즈를 고려해야 하고, 또한 인기와 관심이 있는 시기에 따른 적정 트랜드의 우수한 게임 제작이 필요하다. The current research consists of the analysis of the popular visual contents such as movies, animations, and TV programs adapted into games, and the trends in the implementation of One Source Multi Use (OSMU) strategy in field of game developments. Further more, this research discusses how the concept of OSMU, which is becoming standard concept in development of culture contents, is being applied in field of game development, and the ripple effect brought about from such attempts of applications. According to the research, the success of the games was closely related to having consistency in the development of the game, from the initial stage to planning, marketing, and advertising. Another important factor contributing to the success of the games was the release period. Additionally, instead of having high quality production skills, picking the popular trends and interests matching the release period made the greater value of the developed game. From now on, in development of games, the concept of OSMU must be incorporated from the initial stage, and the trends and interests of the release period must be heavily considered.
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BINDING SUBSETS OF A FINITELY GENERATED FREE GROUP
Lee, Jea-Ik 東西大學校 1995 동서논문집 Vol.1 No.1
본 논문에서는 유한생성 자유군의 유한 부분집합이 그 군을 묶음하는지의 여부를 결정하는 판정방법을 다룬다. 이것을 Handlebody 경계상의 곡면의 비압축성을 조사하는 대수적 방법을 제공해 줌이 알려져 있다. This paper deals with the criteria to determine whether or not a finite subset binds a finitely generated free group, which provide and algebraic method to check the incompressibility of surfaces in handlebody[2].
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