흉부의 자기공명영상

최병욱,Choi, Byoung Wook 대한결핵및호흡기학회 2004 Tuberculosis and Respiratory Diseases Vol.56 No.6

Magnetic Resonance Imaging (MRI) is one of the most advanced imaging techniques in clinical and research medicine. However, clinical application of MRI to the lung or thorax has been limited due to various drawbacks. Low signal intensity of the lung and cardiac and respiratory movements are the most serious problems with MRI in thorax. Nevertheless, MRI is superior to CT in some selected patients with thoracic diseases. The role of clinical MRI in thoracic disease has been widened with improvement of MR equipments and development of new pulse sequences. Otherwise, functional assessment of lung by MRI has been studied for the last decade. These include perfusion MRI with or without contrast enhancement and ventilation MRI with oxygen-enhancement or hyperpolarized noble gas, $^3He$ and $^{129}Xe$.

한국산 남조류 Microcystis 로부터 생산된 microcystin 구조와 생물활성에 관한 연구

최병욱,노영호,이종수 ( Byoung Wook Choi,Young Ho Noh,Jong Soo Lee ) 한국공업화학회 1997 공업화학 Vol.8 No.4

Hepatotoxic cyanobacteria, Microcystis species, were collected from the Nakdong River and we could isolate hepatotoxins, microcystin-LR and microcystin-RR, which are also strong inhibitors of protein phosphatase 1 and 2A. From the microcystins, several microcystin derivatives were synthesized and tested on the mouse toxicity in order to establish the structure-activity relationship. Esterification of carboxyl groups of Glu and MeAsp residue produced nontoxic compounds. However, when we reduced the Mdha residue with sodium borohydride into Ala residue, toxicity was still maintained. Also, the change of guanidyl moiety of Arg residue in microcystin-LR into dimethylpyrimidyl moiety did not change the toxicity of microcystins as well. Thus the carboxyl groups seem to play important roles in binding with protein phosphatase 1 and 2A, whereas Mdha residue and the guanidyl moiety of Arg residue do not.

컴퓨터 그래픽스를 이용한 사각보행로보트의 기구적 해석

최병욱,임준홍,정명진,변증남,Choi, Byoung-Wook,Lim, Joon-Hong,Chung, Myung-Jin,Bien, Zeung-Nam 대한전자공학회 1988 전자공학회논문지 Vol. No.

보행로보트에 있어서 다리의 기구적 특성은 안정도, 에너지 효율 및 걷는 영역 등에 영향을 준다. 보행로보트 중에서 안정도 여유가 비교적 큰 사각보행로보트는 보폭이 크다. 그리고 수직운동과 수평운동이 서로 분리되어 있는 팬토그래프 구조의 다리를 갖는 보행로보트는 기구적인 복잡성으로 인하여 움직임을 예상하기가 어렵게 된다. 따라서, 보행로보트의 3차원적인 이동을 해석하기 위하여 그래픽스를 이용한 방법이 중요하게 쓰일 수 있다. 본 논문에서는 서로 다른 조인트 구동방식을 갖는 세 개의 사각보행로보트를 모델링하고, 각각에 대하여 몸의 중심으로 표시된 경로로써 작업지시를 하여 걷는 모습을 애니메이션 함으로써 그 기구적인 특성을 해석할 수 있게 하였다. 그리고 회전걸음이나 옆걸음을 위하여 다리 제어를 하였고, 조인트의 이동에 대한 정보를 위하여 Sun-3 시스템에서의 윈도우를 이용하였다. The stability, energetic efficiency and walking volume are affected by the geometric structure of legs of a walking robot. A quadruped walking robot is considered to have large stability margin among the walking robots and pantograph leg permits large walk stroke and mutually independent vertical and horizontal movements, but the kinematic characteristics are difficult to analyze. Graphical method may be useful to characterize three dimensional legged motion of the pantograph mechanism. We present the modelling method for three different quadruped robots with pantograph legs that have different joints mechanism. The modeled robots are animated by a path that is planned with respect to the center of body. In particular, graphical animation incorporates leg control to rotation and side walking and uses the window of Sun-3 system for displaying joint information.

중복담낭 1예

최병욱,조용필,유시준,김인구,민병철,Choi, Byung-Uk,Cho, Yong-Pil,Yoo, Shi-Joon,Kim, In-Koo,Min, Pyung-Chul 대한소아외과학회 1996 소아외과 Vol.2 No.1

Congenital duplication of the gallbladder, including true duplication and septated gallbladder, is an uncommon but potentially complicated malformation. It presents biliary colic associated with acute or chronic cholecystitis. It can be diagnosed preoperatively by various imaging tools such as real-time ultrasonography, biliary scintigraphy, oral cholecystography, or endoscopic retrograde cholangiography. It can be safely managed by either laparoscopic or open procedures. This report describes a 6-year-old girl with true duplication of gallbladder diagnosed preoperatively by real-time ultrasonography and treated by open cholecystectomy.

한미동맹의 영향요인과 발전방향

최병욱(Choi Byung Ook)(崔秉旭),임유신(Im Yooshin)(任有信) 신아시아연구소(구 신아세아질서연구회) 2018 신아세아 Vol.25 No.1

한미동맹은 한반도에서 전쟁 억제 및 한국군의 현대화에 기여하였고, 이를 바탕으로 한국의 경제발전과 민주화에 상당한 역할을 하였다. 본 논문은 새롭게 전개되는 국내외의 안보환경이 한미동맹에 미치는 영향요인들을 강점ㆍ약점ㆍ기회ㆍ위협요인 등으로 구분하여 분석하고, 향후 한국 정부가 어떤 대응전략을 추구하여 한미동맹을 발전시켜 나갈 것인지를 밝히고자 한다. 이를 위해 SWOT 분석방법을 활용하였다. 그 결과 한미동맹에 영향을 미치는 ① 강점요인으로 굳건한 한미동맹에 기반한 새 정부의 국방정책, 양국의 공동 가치와 정책 공유, ② 약점 요인으로는 위협에 대한 한미 간 대응방향 차이, 한미관계에 대한 한국인의 우려, ③ 기회요인으로는 북한의 위협에 대한 한미 억지력의 강화, 중국의 부상에 따른 한미동맹의 강화, ④ 위협 요인으로는 한ㆍ미, 한ㆍ중 간의 갈등 문제, 방위비 분담 요구 등으로 나타났다. 이에 따른 한국의 대응 전략은 4가지로 요약해서 제시하였다. 또한 한미동맹의 발전방향으로 북한의 도발에 대한 공동대응 전략 수립, 한국 주도의 연합 방위체제 구축, 한반도 평화 협정 및 평화통일을 위한 동맹의 역할론에 대하여 제언하였다. The ROK-US alliance has helped deter war on the Korean Peninsula and contributed to the modernization of the ROK Army. It also played a significant role in the economic development and democratization of Korea. This study seeks to analyze the alliance’s strengths, weaknesses, and opportunities in a new security environment. We conclude that the strengths are a defense policy based on a solid ROK-US alliance, sharing common values and policies of both countries. The main weaknesses area difference in threat perceptions between the two countries and Korean concern over Korea-US relations. Opportunities include strengthening the ROK-US deterrent against North Korea’s threat, and strengthening the ROK-US alliance as China rises. Threats include the prospects of conflict between Korea and the US, Korea and China, and US requests for defense cost sharing. We offer four strategies for Korea to deal with these issues. For the ROK-US alliance, we suggest establishment of a joint strategy against North Korean provocations, establishment of a joint defense system led by Korea, and a leading role for the alliance in a peace agreement on the Korean Peninsula and peaceful unification.

응우옌 왕조의 만상(萬象) 대응 추이: ‘속국’ 방기와 영토 획득

최병욱 ( Choi Byung Wook ) 한국동남아학회 2019 동남아시아연구 Vol.29 No.3

Chao Anu, the most active and honorable Lao leader in the 19^th century, was severely tortured by the Siamese, and eventually died in an iron cage located in the corner of the Bangkok streets. The emperor of Vietnam never used his military power, in reality, to protect this miserable king of Vạn Tượng who had been eager to gain Vietnamese support to resist Siamese intervention. This article argues the reasons for Minh Mạng not to listen to Chao Anu’s appeal. What did make Minh Mạng do so? How did Minh Mạng skillfully avoided his responsibility? What was the consequences? Vạn Tượng had been an important tributary country and the function of Vạn Tượng was very important to the Vietnamese emperor who claimed that he was the owner of the Việt Nam empire. To be an empire, to have enough tribute kingdoms was necessary. In turn, emperor had to protect his kings. From my point of view, however, Minh Mạng paid more attention to the land than to the loyalties of the kingdoms. In the beginning he and his officials had the same opinion to be the faithful patron of Chao Anu. As soon as Chao Noi, a chief of the Vạn Tượng kingdom in the region of Xieng Khoang asked the support of Vietnam, Minh Mạng changed his mind. He regarded the Xieng Khoang was the former Trấn Ninh area of Vietnam, and he paid more attention to the job to change the Lao Xieng Khoang area to the land of the Vietnam. Chao Anu was left alone. This article also deals with more evidence for the reality of Vietnamese view of the tributary countries. The countries that were regarded by the Vietnamese court to have had paid tributes did not mean the Vietnamese emperors had right to appoint the kings of so-called the tribute countries. We have very enough evidence that Vạn Tượng paid tributes to the emperors of Gia Long and Minh Mạng, while the Vietnamese emperors had no rights to appoint the Vạn Tượng kings who had been the subjects of the Siamese rulers. Only Cambodian kings were under the exclusive control of Vietnam. But the destination of the tribute kingdom was not a permanent survival. Eventually Cambodia was annexed into the territory of Vietnam. To the eyes of Vietnamese emperors in the 19th century, tributary countries were nothing but the candidates for one part of the Vietnamese territory.

Book Review : Hoang Anh Tuan. Silk for Silver: Dutch-Vietnamese Relations, 1637-1 700. Leiden, Netherlands: Brill, 2007.

최병욱 ( Byung Wook Choi ) 한국동남아학회 2008 동남아시아연구 Vol.18 No.1

19세기 중반 남부베트남의 공장(工匠, artisans): 비엔 호아(Bien Hoa)도자기 산업의 사례를 중심으로

최병욱 ( Byung Wook Choi ) 한국동남아학회 2008 동남아시아연구 Vol.18 No.1

This article deals with the rise of ethnic Vietnamese group in the field of the ceramic industry in southern Vietnam during the middle of the 19th century. In general, it has been believed that this industry had been under the control the ethnic Chinese of this region. But the author tries to find clues to the change in which the ethnic Vietnamese were rising in the field of this job. The change would lead us to an important argument on the issue of the social change of the southern society during that century before the French advance. In the chapter two, ``Appearance of ceramic artisans in Bien Hoa`` the author explains the ethnic complexity of the industry. This region was under the influence of the Cham ceramic tradition before the migration of the ethnic Vietnamese reached In addition to the two ethnic groups, the Chinese artisans of the Ming refugees during the 17th century also jointed the ceramic industry in Bien Hoa The mixture of the three ethnic traditions led to the products of the characteristic Dong Nai ceramics. However, the ethnic balance was broken at the end of the 18th century when the Tay Son uprising ruptured this area slaughtering huge numbers of southern Chinese. The Cham tradition had been diluted with the increase of Chinese/Vietnamese population in the Dong Nai region. The result was to see the situation that the Doug Nai ceramic industry began to be transferred to the hands of ethnic Vietnamese artisans. On the other hands, Chinese artisans revived their business in the Saigon area The chapter three with the title of ``Development of Saigon and the Bien Hoa ceramics`` provides evidence for the development of the Bien Hoa ceramic industry in related with the urbanization of the Saigon city during the first half of the 19th century. The urbanization increased the consumption of industrial articles including kinds of ceramics. But the author points out the fact the development of the foreign/domestic trade that appeared in this region also contributed to enhance the level of the demands for the ceramic products. The new brand name of the ``Bien Hoa ceramics`` both in domestic and overseas markets during this time can be interpreted as an indication for the rise of this industrial sect during this time. The chapter of ``Southern features of the artisan society in Bien Hoa`` introduces the special features of ceramic society of southern Vietnam such as gender, education, and rituals. Many of the features were different from these of Bat Trang in northern Vietnam The artisans of southern Vietnam declined with the advance of French power, and by the challenge from the Chinese artisans as a result. However, the Bien Hoa ceramic artisans had another chance to recover its power by the help of French colonial government. It was the endorsement of the value by the authority. The French government provided not only finance but also advanced skills. The result was the quick development of the Dong Nai ceramic industry. But the important fact is that the friendly consideration of the French authority was not from nothing but from the tradition of the Bien Hoa ceramics that bad been acknowledged by the consumers of the market economy.

산소전달 증대를 위해 개발된 제트벤츄리믹서의 산소전달률 평가

최병욱 ( Byeongwook Choi ),김태형 ( Taehyeong Kim ),김영호 ( Youngho Kim ),강세웅 ( Sewoong Kang ),김정희 ( Junghee Kim ),원종엽 ( Jongyeob Won ),전용욱 ( Yongwook Jeon ),강태윤 ( Taeyoun Kang ),정동환 ( Namun Cho ),조남운 ( Dongh 한국물환경학회 2021 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2021 No.-

일본군에 대한 베트남인의 이미지 (1940-1945) - 유교적 오상(五常)의 각도를 통해 살펴봄

최병욱 ( Byung Wook Choi ) 한국동남아학회 2007 동남아시아연구 Vol.17 No.1