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성형외과 영역에서 임상증례군 보고 형식의 논문 작성 가이드
김태곤,김일국,Kim, Tae-Gon,Kim, Il-Kug 대한두개안면성형외과학회 2012 Archives of Craniofacial Surgery Vol.13 No.1
The case series is a descriptive study that follows a group of patients who have a similar diagnosis or who are undergoing the same procedure and is the most prevalent type of research in the field of plastic surgery. Results of case series can generate hypotheses that are useful in designing further studies, including randomized controlled trials or a prospective cohort study. However, no causal inferences should be made from case series regarding the efficacy of the investigated treatment. The authors provide a guide to the design and report on the case series.
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셀룰러 오토마타와 객체기반 시뮬레이션 환경에 의한 트러스 구조의 해석모델 개발
김태곤,이정재,서교,Kim, Taegon,Lee, JeongJae,Suh, Kyo 한국농공학회 2014 한국농공학회논문집 Vol.56 No.3
The aim of this study is to develop a simulation model for analyzing 2D truss structure using Generic Agricultural System Simulator (GASS). Although the truss is simple structure, numerical methods based on matrix analysis are cumbersome and complicated. This study suggests simple and convenient methods to remove calculating steps for whole stiffness matrices. The simulation environment based on independency of object-oriented components on GASS consists of component development and component deploy stages. A component for a truss structure is implemented based on equilibrium equations at nodes. The simulator can analyze truss structures through deploying components with attributes and links. The examples using GASS show intuitive graphical results of the movements of truss nodes.
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점유율 특성을 이용한 도시고속도로의 서비스수준(LOS) 평가에 관한 연구
김태곤,문병근,조인국,정유나,Kim, Tae gon,Moon, Byoung Keun,Jo, In Kook,Jung, Yu Na 대한토목학회 2009 대한토목학회논문집 D Vol.29 No.3D
일반적으로 도로시설의 기본구간에 대한 서비스수준(LOS)의 효과척도로 밀도가 사용되지만, 도로시설의 현장에서 관측된 관측밀도와 교통특성자료로부터 산정된 산정밀도사이에는 오차가 발생할 수 있기 때문에 도로시설의 서비스수준을 제대로 나타낼 수가 없다. 따라서 본 연구의 목적은 연구대상 도시고속도로의 본선구간 상에 관측기기를 설치하여 실시간의 교통특성 자료(교통량, 속도, 점유율, 차두시간, 차두거리 등)를 수집 조사하고, 수집 조사된 교통특성자료의 상호관계로부터 연구대상 기본구간 상의 최대 교통류율을 비교 분석하며, 비교 분석된 최대 교통류율을 중심으로 각 서비스수준별 점유율과 v/c비율사이의 관계에 기초하여 도시고속도로의 기본구간에서 서비스수준의 평가기준을 산정 평가하고자 하는데 있다. Generally, density is used as a measure of effectiveness (MOE) of the level of service (LOS) for the basic segment of the roadway facility, but can not express the operational condition of the roadway facility properly because there can be an error in the computed density compared with the density measured in the field. Thus, the purpose of this study is to investigate the real-time traffic characteristic data (traffic flow, speed, occupancy, headway, spacing, etc.) from the detectors installed on the mainline section of urban freeway under the study, analyze the maximum flow rate from the relationship between the real-time traffic characteristics collected, and evaluate the LOS criteria within the basic segment of the urban freeway based on the relationship between the occupancy and the v/c ratio depending on the level of service.
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X선 고전압장치의 전파 및 배전압 정류방식에 따른 X선 출력 및 선질 비교
김태곤,천민우,박용필,Kim, Tae-Gon,Cheon, Min-Woo,Park, Yong-Pil 한국전기전자재료학회 2010 전기전자재료학회논문지 Vol.23 No.7
X-ray systems for medical treatment use noninvasive procedures. Being capable of locally inspecting the inside of the body, X-ray systems are routinely used for basic diagnosis. X-ray systems to be used for medical purposes were originally made with a gas filled tube inside an induction coil in the initial stages of development but with this approach it becomes difficult to take a satisfactory picture through thick body sections, non invasively. However continued development made it possible to take non-invasive pictures of breasts, blood vessels and other body parts through thick body sections. Recently, high-voltage X-ray generators of more compact size, increased generation efficiency, and sophisticated output control have become possible. All of these features are made possible by the use of a high-frequency output from an inverter and a fast switching semiconductor device. In this paper, we describe a new X-ray generator operating with a resonant inverter in order to reduce switching loss and high frequency noise. In addition, in order to identify the differences amongst types of rectification, we have compared output and the quality of X-ray pictures obtained with full-wave rectification and dual-voltage rectification methods.
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김태곤,홍승재,Kim, Tae-Gon,Hong, Seung-Jai 한국건축역사학회 2021 건축역사연구 Vol.30 No.5
This study examines the spatial structure of Jeju-eupseong (Town-castle) in the Joseon Dynasty. The spatial structure of Jeju-eupseong has distinctive features and regional characteristics that are substantially different from typical eupseong in inland regions. This is mainly attributed to the geographical characteristics of the island and the administrative system with strengthened military functions. Jeju-eupseong displays a distinctive layout of major buildings and road system with a plaza located in its center in comparison with the ones found in inland regions. Gwandeokjeong Plaza in Jeju-eupseong served as the center of Jeju's politics, administration, and culture during the Joseon Dynasty, and it, in the modernization period, has become an open public space in the heart of Old Downtown used for community gatherings. Therefore, this study aims to explore the historical background and distinctive spatial structure of Jeju-eupseong in comparison with eupseong in other parts of Korea. Moreover, the study examines the characteristics of Gwandeokjeong as a plaza that has not been dealt with in other studies of eupseong.
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김태곤,Kim, Tae-Gon 한국사료협회 2004 飼料 Vol.3 No.5
미국은 세계 최대의 사료곡물 생산국인 동시에 최대소비국이기도 하다. 풍부한 곡물생산국으로서의 우위성을 살려서 축산물 생산량도 세계 최대를 기록하고 있다. 옥수수는 미국이 세계생산의 41.6%, 수출의 68.29%를 차지할 정도로 미국에 집중되어 있다. 이러한 결과로 미국에서 기상이변 등에 의한 생산변동이 세계가격에 직접적으로 미치는 영향력이 매우 높아지는 특징이 있다. 미국의 대표적 사료곡물인 옥수수를 중심으로 생산주기와 수급추이, 유통경로, 사료용 이용현황 등에 대하여 최근 상황을 정리한다.
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i-beam 스퍼터링 법으로 제작한 BiSrCaCuO 박막의 열역학분석
김태곤,박용필,Kim, Tae-Gon,Park, yong-Pil 한국정보통신학회 2007 한국정보통신학회논문지 Vol.11 No.1
다양한 기판 온도와 산화 가스 압력 하에서 i-beam 스퍼터링 법으로 BiSrCaCuO 박막을 제작하였다. 기판온도 $T_{sub}$와 산화 가스 압력 $pO_3$를 변화시키며 제작된 Bi2212 및 Bi2223 박막의 생성상도를 작성하였다. Bi2212 조성으로 스퍼터링 하였으나 Bi2212 상 뿐 아니라 Bi2201 상과 Bi2223 상이 모두 생성되었고, Bi2212나 Bi2223 단상은 매우 좁은 온도 영역에서만 형성되었다. 생성 엔탈피의 변화 ${\Delta}{\bar}HO_2$와 생성 엔트로피의 변화 ${\Delta}{\bar}SO_2$에 대한 열역학적인 계산을 통해 Bi2212 단상이 형성된 경우 각각 -260 kJ/mol 및 $-225J/mol{\cdot}K$의 값을 얻었다. High duality BiSrCaCuO thin films fabricated by using the i-beam sputtering method at various substrate temperatures, $T_{sub}$ and oxidation gas pressures, $pO_3$. The correlation diagrams of the BiSrCaCuO phases with Tsub and $pO_3$ are established in the 2212 and 2223 compositional films. In spite of 2212 compositional sputtering, Bi2201 and Bi2223 as well as Bi2212 phases come out as stable phases depending on $T_{sub}$ and $pO_3$. From these results, the thermodynamic evaluation of ${\Delta}H$ and${\Delta}S$, which are related with Gibbs' free energy change for single Bi2212 or Bi2223 phase, was performed.
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