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( Hyunkyu Cho ),( Hongseok Yoo ),( Kyung Soo Lee ),( Myung Jin Chung ),( Man Pyo Chung ) 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.-
Background: Fibrotic nonspecific interstitial pneumonia (NSIP) is frequently associated with connective tissue diseases. However, prognosis according to associated diseases is still contradictory. Methods: In this retrospective study, we reviewed clinical data of 256 patients who were diagnosed with fibrotic NSIP by surgical lung biopsy between 1996 and 2018. Survival was estimated by Kaplan-Meier method. Factors associated with survival was analyzed by multiple logistic regression analysis. Results: Of 256 study patients, 106 (41.4%) patients had connective tissue diseases while 150 (58.6%) were diagnosed with idiopathic NSIP. Median age was 54 years and 172 (67.2%) was female. Median forced vital capacity and diffusing capacity was 67% and 62%, respectively. Patients with connective tissue diseases were younger (57 years vs. 51 years) and lower diffusing capacity (67% vs. 58%). However, no difference in gender, smoking status, or forced vital capacity was observed. Patients with connective tissue diseases showed better survival outcome compared to that of idiopathic NSIP (Median survival [187.5 ± 4.6] months vs. [162.9 ± 6.6], P = 0.034). In multivariate analysis, the factor associated with survival was relapse after treatment [Adjusted odds ratio 8.947 (2.412 - 33.145), P< 0.001]. Discussion: Idiopathic fibrotic NSIP was associated with poorer survival compared to that of fibrotic NSIP with connective tissue disease.
이무훈(Moohun Lee),조현규(Hyunkyu Cho),조현성(Hyeonsung Cho),조성훈(Sunghoon Cho),장창복(Changbok Jang),최의인(Euiin Choi) 한국전자거래학회 2005 한국전자거래학회지 Vol.10 No.3
현재의 웹 검색은 단순히 키워드 매칭만을 통해 필요한 정보들을 검색하기 때문에 그 결과가 사용자가 원하는 정보와는 의미적으로 상이한 결과들을 많이 포함하고 있다. 사용자가 원하는 정보와 의미적으로 정확히 일치하는 정보들을 추출하기 위해서는 웹 자원에 대한 정확한 의미 부여와 웹 자원들 사이의 의미적 연관성을 기술할 수 있는 지식 표현 수단인 온톨로지가 필요하다. 웹 기술 표준화 단체인 W3C에서는 이와 같은 웹 자원에 대한 의미 표현 기술로 OWL(Web Ontology Language)이라는 웹 온톨로지 언어를 발표하였으나 아직 이를 효과적으로 저작, 편집할 수 있는 전용 도구의 개발은 아직 미비한 실정이다. 따라서 본 논문은 OWL의 생성 및 편집을 효과적으로 제공할 수 있는 저작 시스템을 설계하고 구현하였다. Current web search includes a lot of different results with information that user does not want, because it searches information using keyword mapping. Ontology can describe the correct meaning of web resource and relationships between web resources. And we can extract suitable information that user wants using Ontology. Accordingly, we need the ontology to represent knowledge. W3C announced OWL(Web Ontology Language), meaning description technology for such web resource. However, the development of a special tool that can effectively compose and edit OWL is inactive. In this paper, we designed and developed an OWL authoring system that can effectively provide the generation and edit about OWL.
MAP Transmission Strategies in IEEE 802.16m
YU, Hyunkyu,KIM, Taeyoung,CHO, Jaeweon,CHOI, Hokyu,PARK, Dong Seek,OH, Seong-Jun The Institute of Electronics, Information and Comm 2009 IEICE TRANSACTIONS ON COMMUNICATIONS - Vol.92 No.5
<P>This letter deals with coding and multiplexing strategies for DL/UL MAP transmission in IEEE 802.16m. Separate coding gives a better choice against the joint coding due to the individual users' link adaptation gain. As a multiplexing option, frequency-domain multiplexing outperforms time-domain one in the system-level performance thanks to its flexible power sharing capability between overhead channels and user traffic channels. Overall system-wide performance results are presented with the system level simulation for the various options.</P>