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이태진,이진숙,공경엽,강신광,노재윤,Lee, Tae-Jin,Lee, Jin-Sook,Gong, Gyung-Yub,Khang, Shin-Kwang,Ro, Jae-Y. 대한세포병리학회 2000 대한세포병리학회지 Vol.11 No.1
Pulmonary hamartomas are uncommon benign tumors, usually discovered radiologically as a solitary coin lesion in asymptomatic individual. The approach to the patient with a peripheral lung nodule has changed with the increasing acceptance of fine needle aspiration cytology(FNAC) as a rapid, safe, inexpensive, and highly accurate diagnostic tool. However, a few reports describing the FNAC findings of pulmonary hamarioma have appeared in the cytologic literature and the experience of FNAC is limited. We reviewed all 9 cases of pulmonary hamartoma with histologic confirmation after FNAC seen at Asan Medical Center since 1995 to evaluate cytologic findings and to determine the value of FNAC in identifying that lesion. Originally, seven of nine patients were diagnosed as pulmonary hamartoma, while two patients were diagnosed as inflammatory lesion and adenocarcinoma of each. On review, eight of nine patients were considered as diagnostic of pulmonary hamartoma. The diagnostic findings in FNAC of pulmonary hamartoma were the presence of fibrillary myxoid tissue with spindle cells as well as hyaline cartilage.
이태진,Lee, Tae-Jin 한국정보통신기술협회 2006 TTA저널 Vol.106 No.-
2003년 본격적 표준화가 된 IEEE 802.11n 표준화는 최대 600Mbps 무선LAN을 이용할 수 있는 차세대 무선LAN 기술이다. 최근 Draft 1.0 표준화가 됨에 따라 통신 및 칩 제조사의 발빠른 상용화 움직임이 일고 있어 많은 이슈가 되고 있다. 본 고에는 IEEE 802.11n의 주요 기술적 특징과 최근 표준화 동향을 살펴보았으며, 이러한 동향에 맞추어 국내 관련 업체의 적절한 대응이 필요할 것이다.
목과(木瓜), 호장근(虎杖根) 및 유향(乳香) 추출물이 Raw 264.7 cell에서 LPS로 유도된 nitric oxide 생성에 미치는 영향
이태진,우경진,서성일,신상우,김상찬,권영규,박종욱,권택규,Lee, Tae-Jin,Woo, Kyung-Jin,Shu, Seong-Il,Shin, Sang-Woo,Kim, Sang-Chan,Kwon, Young-Kyu,Park, Jong-Wook,Kwon, Taeg-Kyu 대한동의생리학회 2006 동의생리병리학회지 Vol.20 No.6
In activated macrophage, large amounts of nitric oxide (NO) are generated by inducible nitric oxide synthase (iNOS), resulting in acute or chronic inflammatory disorders. In Raw 264.7 cells stimulated with lipopolysaccharide (LPS) to mimic inflammation, water extracts from the fruit of Chaenomeles sinensis, the root of Polygonum cuspidatum and Boswellia carterii inhibited the LPS-induced NO production in a parallel dose-dependent manner. To investigate the mechanism by which those extracts inhibits NO production, we examined the expression of iNOS and COX-2 in both mRNA and protein levels. We observed a significant change in the iNOS expression between LPS alone and LPS plus those extracts-treated cells. However, water extracts from Chaenomeles sinensis, Polygonum cuspidatum and Boswellia carterii did not inhibit COX-2 expression which was induced by LPS treatment in Raw 264.7 cells. These data suggest that water extracts from Chaenomeles sinensis, Polygonum cuspidatum and Boswellia carterii can modulate anti-inflammatory immune response, which may be in part associated with the regulation of NO synthesis through the regulation of iNOS expression in mouse macrophage cells.
이태진,Lee, Tae-Jin 대한예방의학회 2008 예방의학회지 Vol.41 No.2
To curb a rapid increase in expenditures for pharmaceuticals, the Korean government introduced a positive list system and a negotiation process for drug prices at the end of 2006. Economic evaluation of pharmaceuticals has begun to have a pivotal role in the listing and pricing of drugs for the Korean National Health Insurance. There are some points to discuss regarding the use of economic evaluation in the listing and pricing in the context of the Korean system. First, the listing and pricing processes have been fragmented, evoking complaints from pharmaceutical companies and delaying the access of new drugs to patients. Second, there is a concern that the positive list system may limit the range and availability of drugs for patients to choose for treatment. Third, the time schedule for de-listing of existing drugs may not be realistic. Fourth, it is not always easy to provide reliable evidence of cost-effectiveness due to a lack of materials. Fifth, there is no consensus on the range of the ICER (incremental cost-effectiveness ratio) acceptable to the Korean society. In conclusion, in the near future, it will be necessary to evaluate the achievements that the economic evaluation has provided to the Korean society.
동적인 고정 및 가변 전송을 서비스를 위한 다중 서비스 네트워크 스위치의 성능 분석
이태진,Lee, Tae-Jin 한국정보처리학회 2002 정보처리학회논문지 C : 정보통신,정보보안 Vol.9 No.3
본 논문에서는 고정 전송율 서비스 및 가변 전송율 서비스 호들이 동적으로 네트워크에 들어와서 데이터를 전송하고, 데이터를 모두 전송하면 네트워크에서 사라지는 동적인 다중 서비스 네트워크에서, 고정 전송율 및 가변 전송율 서비스의 요구 성능을 만족하기 위한 네트워크 스위치(링크)의 성능 분석 및 설계 방법을 제안한다. 먼저 동적인 다중 서비스 네트워크의 링크를 Harkov 체인을 이용해 모델하고, QBD (Quasi-Birth-Death) 프로세스와 행렬 방정식을 이용해 가변 전송율 서비스의 호들에 할당될 전송율의 성능을 구한다. 즉, 가변 전송율 서비스의 평균 호수를 추정하고 이를 바탕으로, 호당 평균 전송율 및 평균 전송 지연 시간을 구한다. 고정 전송율 서비스의 성능은 고정 전송율 서비스 호들의 차단 확률(blocking probability)로 구해진다. 이렇게 해서 구해진 고정 전송율 및 가변 전송율 서비스의 성능을 이용해서, 고정 전송율 및 가변 전송율 서비스 호들의 요구 성능(전송율, 전송 지연 시간, 호의 차단 확률 등)을 만족하기 위한 네트워크 링크의 용량을 설계하는 방법을 제안한다. 이러한 방법을 데이터 및 음성(비디오)을 동시에 지원하는 네트워크 스위치의 성능 분석 및 용량 설계에 이용할 수 있다. We consider design of multiservice network link, in which connections of constant- and adaptive-rate services arrive and leave dynamically. We propose performance analysis and design methods of these dynamic multiservice networks. A multiservice network link is modeled by a Markov chain, and data rates for adaptive-rate connections are derived using QBD (Quasi-Birth-Death) processes and matrix-geometric equations. We estimate average number of adaptive-rate connections, average data rate and average connection delay. The performance of constant-rate connections is determined from the blocking probability of the connections. Based on the performance of constant-and adaptive- rate connections, we propose a design methods of a network link to satisfy performance requirements of constant- and adaptive-rate connections (data rates, delay, blocking probability). Our methods can be used for the analysis and design of network switch supporting dynamic data and voice (video) traffic simultaneously.