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김태균 ( Taegyun Kim ),오상호 ( Sang Ho Oh ),이주희 ( Ju Hee Lee ) 대한피부과학회 2010 대한피부과학회지 Vol.48 No.6
We report a 45-year-old woman presenting with a painful subungual epidermal cyst on the 4th finger nail bed. Based on clinical features only, the lesion was initially suspected to be a glomus tumor. However, histopathological examination revealed an epidermal cyst on the nail bed. Subungual epidermal cysts are rare disorders that may cause pain and tenderness that increase according to tumor growth. They can mimic glomus tumors owing to their similar clinical manifestations. To differentiate subungual epidermal cysts from glomus tumors, imaging tools such as ultrasonography and magnetic resonance imaging can be used. Dermatologists should be aware that several kinds of tumors including epidermal cysts with clinical similarities may occur in the subungual area. (Korean J Dermatol 2010;48(6):506∼509)
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일만선차연락(日滿船車連絡)의 형성과 전개, 1905~1917 : 남만･동청철도와 일만연락항로를 중심으로
김태균(Kim Taegyun) 부경대학교 인문사회과학연구소 2021 인문사회과학연구 Vol.22 No.1
러일전쟁 이후 러시아로부터 남만주철도와 여순･대련의 조차권을 획득한 일본은 이에 대한 경영방법을 논의했다. 그 결과 항만 및 철도의 정비를 통해 일본과 만주 사이에 교통･운수 네트워크를 형성하여 만주의 정치･군사･경제를 장악하고자 했다. 이것이 일만선차연락 구상의 등장이었다. 선차연락이란 항로와 철도를 연락시키는 것을 의미한다. 이를 통해 일본과 만주 간에 직통수송체계를 여는 것은 일만선차연락이라고 했다. 이처럼 당시 일본의 만주에 대한 교통･운수정책은 항로와 철도를 아우르는 방식이었다. 일만선차연락에는 총 세 개의 루트가 존재했다. 다롄루트, 블라디보스톡루트, 부산루트가 그것이다. 세 루트는 모두 일본과 만주 간을 왕래하며 두 지역 간의 교류를 활성화시켰다. 등장한 순서대로 살펴보자면, 다롄루트는 오사카-다롄항로를 통해 일본 국유철도와 남만주철도를 이었다. 블라디보스톡루트는 쓰루가-블라디보스톡항로를 통해 일본 국유철도와 러시아 동청철도를 이었다. 부산루트는 관부연락선과 한반도종관철도를 통해 일본 국유철도와 안봉철도를 이었다. 일만선차연락은 세 루트 구상이 등장하여 논의가 진행되던 시기부터 서로 영향을 주고받으며 힐항했다. 만주의 이권에 대한 일본과 러시아의 관계상 다롄루트와 블라디보스톡루트는 경쟁구도를 형성했다. 다롄루트와 부산루트는 러시아에 대한 군사작전상의 입장에서 일본 육군이 부산루트를 지지하기 시작하면서 일본 내에서 대립구도를 형성했다. 이와 같은 상황에서 1913년에서 1917년에 걸쳐 일만선차연락 네트워크에 큰 변화를 초래한 사건들이 발생하게 되었다. 그것은 3선연락운임할인제도와 제1차 세계대전이었다. 이로 인해 일만선차연락 세 루트는 각각 큰 발전을 이루거나, 다른 발전 방향을 모색하거나, 쇠퇴하는 등 크게 재정비되었다. Right after the Russo-Japanese War, Japan that wins South Manchuria Railway and Lu-shun and Da-lian Railway from Russia was discussed the management method. As a result through the maintenance of ports and railways, form a traffic and transportation network between Japan and Manchuria, wanted to take control of Manchuria s politics, military and economy. This was the emergence of the Rail and Boat transportation between Japan and Manchuria formulate. Rail and Boat transportation means the connection between the sea route and the railway. it was combined rail and boat transportation between Japan and Manchuria which made possible the come-and-go between Japan and Manchuria. In this way, Japan s traffic and transportation policies for Manchuria were envisioned, formed, and developed in a way that encompassed sea routes and railroads. There were three routes in combined rail and boat transportation between Japan and Manchuria. First one is Da-lian Route, second one is Vladivostok Route, and third one is Busan Route. Three routes has facilitated exchange between Japan and Manchuria. Dalian route was through the Osaka-Darian sea route, connected Japan s state-owned railway and South Manchuria Railway. Vladivostok route was through the Tsuruga-Vladivostok sea route, connected Japan s state-owned railway and chinese eastern railway. Busan route was through A cross-channel liner between Busan and Shimonoseki and Trans-Korea Railway, connected Japan s state-owned railway and Anbong railway. The three routes were influenced by each other since the time when the idea appeared and the discussion was under way. Da-lian Route and Vladivostok Route formed a competitive structure in the relationship between Japan and Russia over Manchuria s rights. As the Japanese army began to support the Busan route from its military operations against Russia, Da-lian Route and Busan Route formed Confrontational structure. Under these conditions, events have occurred that have caused a major change in rail and boat transportation between Japan and Manchuria from 1913 to 1917. That was fare discount system of three Rail and The World War Ⅰ. Due to this The three ruotes each to make great progress, to seek other development directions, to decline, etc, greatly reorganized.
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김태균(Taegyun Kim),정종우(Jongwoo Jung),하태규(Taegyu Ha),공예진(Yejin Kong),이태삼(Taesam Lee) 한국방재학회 2022 한국방재학회논문집 Vol.22 No.3
하천측량은 하천의 홍수예방을 위한 계획, 정비, 운영 등에 매우 중요한 요소이다. 이제까지는 일반적인 현장에서의 직접측량이 일반적으로 이루어져왔으나 최근에는 Unmanned Aerial Vehicle (UAV)를 이용한 하천측량이 다방면에 이용되고 있다. 특히 하천의 경우 둑마루(Top), 하상(Bottom), 경사(Slope)면이 항상 존재하고 있고 물의 흐름을 따라 길게 하천이 형성된다. 이러한 하천의 특성을 반영한 UAV의 촬영매개변수가 설정되어야 한다. 이를 위해 본 연구에서는 하천의 항공촬영매개변수 중 최적 촬영고도를 추정하는 연구를 실시하였다. 연구대상지로 진주 집현면에 위치한 지내천 내의 구역을 설정하였고 50 m에서 120 m에 걸쳐 10 m마다 고도를 상승시켜가며 촬영을 진행하였으며 10개의 Ground Control Point 지점을 이용하여 촬영성과를 보정하고 38개의 검사점을 통하여 촬영한 결과로부터 나온 검사점의 고도정보와 실제 측량을 통해 얻은 고도를 비교하여 오차를 산정하였다. 산정결과 70 m부터는 오차가 상대적으로 크게 나타나는 것으로 확인되었으며 특히 하상(Bottom)에서의 오차가 보다 크게 나타나는 양상을 보였다. 또한 오차는 일반적으로 양수 형태로 나타났으며 이는 하천의 하상에서 두드러지는 것으로 나타났다. 본 연구결과는 보다 다양한 하천에서의 연구결과를 통해 하천측량을 위한 촬영고도 설정에 의미있는 결과를 제시해 주는 것으로 판단되며 앞으로 주요 촬영매개변수들에 대한 연구를 바탕으로 UAV하천측량에 중요한 기준이 마련될 수 있을 것으로 판단된다. River surveying plays an important role in planning, maintenance, and operation of river flood prevention. Thus far, direct surveying has been mainly performed in the field. However, river surveying using an unmanned aerial vehicle (UAV) was recently applied to the hydrologic field. A river consists of top, bottom, and sloped surfaces, and a long stream is generally formed following the flow of water. The photographic parameters of the UAV, including the flight altitude, must be adjusted as per the characteristics of a river. Therefore, in this study, we focused on estimating the optimal photographing altitude for river surveying. The Jinae-cheon stream area located in Jiphyeon-myeon, Jinju was used as the research site, and the flight altitudes for the images were tested from 50 m to 120 m, increasing the altitude every 10 m. The images were corrected afterwards using 10 ground control points, and the error was calculated using 38 reference points. Therefore, it was confirmed that the error appeared relatively large from 70 m, and at the bottom. Moreover, the error was generally positive for the riverbed. This study provides useful results to regulate the photographing altitude for river surveying, and the results can be employed with extensive studies on diverse rivers to establish the standard UAV parameters.
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Psoriasis: Research gaps on pathogenesis
김태균 ( Taegyun Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1
Psoriasis is a common and chronic inflammatory skin disease characterized by discrete erythematous scaly plaques. Psoriatic lesions are typically infiltrated with a large number of inflammatory cells which are mainly composed of dendritic cells and cytokine-producing T cells. Psoriasis can be managed by using immune-modulating strategies, indicating that psoriasis is one of immune-mediated dermatoses. A growing body of evidence from both basic and clinical studies has elucidated that IL-23-derived IL-17 immune response plays a central role in the pathogenesis of psoriasis. However, there are still unsolved key questions about psoriatic pathogenesis which remain to be answered to more deeply understand the underlying nature of psoriasis. Here we will discuss three interesting parts of questions about the pathogenesis of psoriasis based on state of the art research trend. 1. Phenotypic translation of psoriasis genetics: Skin-specific genes, Innate immunity genes, Adaptive immunity genes 2. Autoimmune nature of psoriasis Melanocyte antigen ADAMTSL5, Neolipid antigens presented by CD1a+ Langerhans cells 3. The relevance of imiquimod-induced animal model of psoriasis. Mouse strain-dependent effects, Limitations and possible confounding variables to consider Deciphering research gaps on psoriatic pathogenesis will shed light on a fruitful chance of developing new therapeutic modalities of psoriasis.
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엔진 온도 평가와 열정산을 위한 통합 열전달 해석 기술
김태균(Taegyun Kim),문길민(Kilmin Moon),송경(Kyong Song),박재인(JaeIn Park) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
The increase of power density is limited by engine temperature. Engine component temperatures are an important consideration. because it will affect material strength and lubricating performance, therefore, it is of great importance tor engine designers to estimate component temperature in the early stage of engine development. In the present work, the conjugate heat transfer analysis of calculating heat transfer between head/block solid components and coolants was used. to estimate solid component temperature distribution and heat rejection to coolant. In particular. unsteady heat transfer simulation method of Intake/exhaust valve system were developed. The calculation results were presented and compared with experimental results to confirm the validity of this methodology. It is also applied to optimize engine cooling system through thermal balance.
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