정압기의 임계유동 특성과 배관망해석 모델링에 관한 연구 (I) - 압력비 영향 -

신창훈,하종만,이철구,허재영,임지현,주원구,Shin Chang Hoon,Ha Jong Man,Lee Cheol Gu,Her Jae Young,Im Ji Hyun,Joo Won Gu 대한기계학회 2005 大韓機械學會論文集B Vol.29 No.12

Since the interior shape of a pressure regulator is complex and the change of fluid resistance at each operation condition is rapid and big, the pressure regulator can become the major factor that causes big loss in pipelines. So the suitable pressure regulator modeling by each operation condition is important to obtain reliable results especially in small scale pipeline network analysis. And in order to prevent the condensation and freezing problems, it is needed to confirm both whether temperature recovery is achieved after passing by the pressure regulator's narrow neck and how much amount of low temperature area that can cause condensate accumulation is distributed by various PCV models at every inlet-outlet pressure ratio. In this research, the numerical model resembling P company pressure regulator that is used widely for high pressure range in commercial, is adopted as the base model of CFD analysis to investigate pressure regulator's flow characteristics at each pressure ratio. Additionally it is also introduced to examine pressure regulator's critical flow characteristics and possibility of condensation or freezing at each pressure ratio. Furthermore, the comparison between the results of CFD analysis and the results of analytic solution obtained by compressible fluid-dynamics theory is attempted to validate the results of CFD modeling in this study and to estimate the accuracy of theoretical approach at each pressure ratio too.

회원작품 - 광주 홀리데이인 호텔

신창훈,이용익,Shin, Chang-hoon,Lee, Yong-ik 대한건축사협회 2013 建築士 Vol.2013 No.2

회원작품-파주 생능출판사 사옥

신창훈,Shin, Chang-Hoon 대한건축사협회 2008 建築士 Vol.2008 No.9

회원작품 - 갤러리 303

신창훈,장윤규,Shin, Chang-Hoon,Jang, Yoon-Gyoo 대한건축사협회 2010 建築士 Vol.2010 No.2

다중 비디오카메라에서 색 정보를 이용한 특정 이동물체 추적 알고리듬

신창훈,이주신,Shin, Chang-Hoon,Lee, Joo-Shin 한국정보처리학회 2004 정보처리학회논문지B Vol.11 No.3

In this paper, the interesting moving objects tracking algorithm using color information on Multi-Video camera is proposed Moving objects are detected by using difference image method and integral projection method to background image and objects image only with hue area, after converting RGB color coordination of image which is input from multi-video camera into HSI color coordination. Hue information of the detected moving area are normalized by 24 steps from 0$^{\circ}$ to 360$^{\circ}$ It is used for the feature parameters of the moving objects that three normalization levels with the highest distribution and distance among three normalization levels after obtaining a hue distribution chart of the normalized moving objects. Moving objects identity among four cameras is distinguished with distribution of three normalization levels and distance among three normalization levels, and then the moving objects are tracked and surveilled. To examine propriety of the proposed method, four cameras are set up indoor difference places, humans are targeted for moving objects. As surveillance results of the interesting human, hue distribution chart variation of the detected Interesting human at each camera in under 10%, and it is confirmed that the interesting human is tracked and surveilled by using feature parameters at four cameras, automatically. 본 논문은 다중 비디오카메라에서 색 정보를 이용한 특정 이동물체 추적 이동물체 추적 알고리듬을 제안한다. 제안된 방법은 다중 비디오카메라로부터 입력되는 영상의 RGB 칼라 좌표계를 HSI 칼라 좌표계로 변환한 후, 영상의 색조 영역만을 가지고 배경영상과 물체가 존재하는 영상에서 차영상 기법과 가산투영 기법을 사용하여 이동물체를 검출한다. 검출된 이동물체 영역의 색조는 0도부터 360도 사이에서 24단계로 정규화 된다. 정규화된 이동물체의 색조 분포도를 구한 후, 가장 높은 분포를 갖는 3개의 정규화 레벨과 3개의 정규화 레벨 사이의 간격을 이동물체의 특징파라미터로 사용하였다. 각 카메라간의 이동물체 동일성 관별은 이동물체 특징파라미터를 가지고 판별하고, 추적 감시하였다. 제안된 방법의 타당성을 검토하기 위하여 실내에 각기 다른 장소에 4대의 카메라를 각각 설치하여 이동물체의 대상을 사람으로 놓고, 특정사람을 감시한 결과 각 카메라에서 검출된 특정사람의 색조분포도 변화는 10%내를 유지함을 보였고, 특징 파라미터로 4대의 카메라에서 특정사람이 자동 추적감시 됨을 확인하였다.

회원작품: 앨리스의 성

신창훈,장윤규,미쯔이 준,Shin, Chang-Hoon,Jang, Yoon-Gyoo,Jun, Mitsui 대한건축사협회 2011 建築士 Vol.2011 No.4

상악동 중격의 발생율과 파노라마 방사선 사진의 정확도

신창훈,김형진,홍종락,양승민,Shin, Chang-Hoon,Kim, Hyung-Jin,Hong, Jong-Rak,Yang, Seung-Min 대한구강악안면외과학회 2007 대한구강악안면외과학회지 Vol.33 No.5

Purpose: The purpose of this study was to determine the incidence of antral septa and the accuracy of panoramic radiograph in identifying maxillary sinus septa. In addition, when panoramic radiograph led to a false diagnosis of more than majority, we analyzed findings of the panoramic radiograph. Patients and methods: This study included 180 patients who were radiographically examined before the surgery was done using both panoramic and computerized tomographic radiographs(CT scan), Samsung Medical Center from April 2003 to March 2006, and examined the incidence of antral septa, the false diagnosis rate of panoramic radiograph, and radiographic characters in case of false diagnosis. Only those bone lamellae were considered as septa that showed a height of at least 3.0mm. It was thus possible to exclude the alveolar recess. One oral and maxillofacial surgeon(OMFS) determined the presence or absence of sinus septa in CT scan, and five OMFS determined the presence or absence of sinus septa in panoramic radiograph. Results: The septa were observed in 81 of 360 sinuses(22.5%). All septa were oriented in a buccopalatal plane. More or less greater prevalence was observed in the second molar region(38.2%) but no predominant location was found. Panoramic radiograph led to false diagnosed septa in 361 of 1800 cases(20.1%). In case of false diagnosis of more than majority, superimposed image on zygomatic process was 44.1%, faint image in the region not related to sinus lifting 26.5%, faint image in the region related to sinus lifting 17.6%, and misconception for superimposed image 11.8% Conclusion: In this study we could get clinico-anatomical information of septum in the maxillary sinus. Compared to CT scan, panoramic radiograph can not clearly differentiate the sinus septa, but we consider that panoramic radiograph may improve its usefulness if we take additional modified panoramic radiograph and clinical exam.

회원작품 - 더 힐 갤러리

신창훈,Shin, Chang-hoon 대한건축사협회 2012 建築士 Vol.2012 No.12

배전센터용 광역 배전자동화시스템 개발

신창훈(Shin, Chang-Hoon) 한국산학기술학회 2008 한국산학기술학회논문지 Vol.9 No.5

본 논문은 한국전력 자체 연구과제로 수행된 광역 배전자동화시스템의 개발에 관한 연구 내용을 다루었다. 국내 배전계통 운영 환경에 적합한 광역 배전자동화시스템 설계기준 수립과 통합 시스템용 미들웨어 설계, 통합운영을 위한 감시화면, 회선별단선도, 자동화 응용기능 및 타 시스템 연계 등 운영 프로그램 개발이 수행 되었으며, 충남 사업본부와 공동으로 본부 배전센터에서 광역 배전자동화시스템을 시범운영함으로써 제반 성능검증 작업과 확대적용을 위한 운영기준이 정립되었다. 개발된 광역 배전자동화시스템은 전국 41개 배전센터에 설치되어 배전계통 운영 선진화에 기여할 전망이다. This paper presents KEPCO research project for developing wide area DAS by reengineering conventional DAS and its functional upgrade. Through the research project system design requirements were prepared based on the local operation status and oversea examples. Application softwares were also developed supporting integrated operation of several area. The system implementation was performed on Choongnam regional head office for pilot operation. The developed wide area DAS will be fully installed on 41 DCC nation wide and expected to contribute on innovation of our distribution network operation.

개인의 국제법주체성 및 법인격에 대한 이론적 재조명

신창훈(Chang Hoon Shin) 국제법평론회 2006 국제법평론 Vol.0 No.23

고전적 국제법이론에 의하면 개인은 국제법의 객체로 파악되었을 뿐이며 국제법의 유일한 주체는 국가였지만 20세기 특히 제2차 세계대전 후 국제법체제의 전개와 점진적 발전은 국제법규의 형성과정에서 인도주의적 가치의 중요성을 인정하는 데 있어서 상당한 진척을 이룸으로써 개인의 국제법주체성 내지 국제법인격을 인정하는 학자들이 증가하게 되었다. 이 글은 20세기에 찾아온 개인의 국제법인격에 대한 인식의 변화에 기초를 하면서 21세기를 맞이하여 개인의 국제법인격에 대한 국제법이론의 발전을 재조명하여 국제법상 능동적 지위를 보유하고 있는 개인의 법적 지위와 국제법인격의 성격을 분명히하고자 하는 데 일차적 목표를 두고 있다. 논의의 구체성과 명확성을 높이기 위해 논의의 대상은 개인 중에서 자연인에 한정하고자 하며 국제법인격 부여의 전제요건으로 많은 저서에서 가장 중요하게 인식되고 있는 국제청구능력에 대한 분석에 집중하고자 한다. According to the theory of traditional international law, individuals have been considered nothing but the object of international law and States as being the sole subject of international law. The progressive development of international law since the World War II, however, has made noticeable development in recognising humanitarian values in the process of the formation of international legal norms. As a necessary consequence, numerous authors have recognised the international personality of individuals. Based on the fundamental change of the perception of their international personality, this article reassesses the development of the international law theory on international personality of the 21st century and is to clarify the legal position of individuals with personality under international law. For the argument s sake, the author will focus mainly on the personality of natural person rather than that of corporate - juridical person, and analyse his or her capacity to bring international claims that has been considered most important one of the requirements for conferring international personality on certain entities.