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센서네트워크 어플리케이션을 위한 네트워크 프레임워크와 통합시뮬레이터 간의 인터페이스 구현 및 설계
이정주,곽동은,서민석,박현주,Lee, Jeong-Joo,Koak, Dong-Eun,Seo, Min-Suk,Park, Hyun-Ju 한국정보통신학회 2013 한국정보통신학회논문지 Vol.17 No.2
신뢰성 있는 소프트웨어 개발을 위해서 가장 중요한 단계 중의 하나가 소프트웨어 테스트이다. 최근에 점진적이고 반복적인 소프트웨어 개발 방법론이 각광을 받으면서, 소프트웨어의 작은 변경에 따른 회귀 테스트의 중요성이 점점 커지고 있다. 또한 센서네트워크와 같은 다수의 노드 환경에서 동작하는 소프트웨어를 검증하기 위한 시뮬레이터 환경이 필요하다. 본 논문에서는 네트워크 프레임워크와 통합시뮬레이터 간의 인터페이스 모듈을 구현하여, 네트워크 프레임워크로 구현한 센서네트워크 어플리케이션을 다양한 가상의 환경에서 단위테스트하기 위한 환경을 제공한다. For the development of reliable software, Software testing is the most important. Recently small changes of the software according to the importance of regression testing is growing. To verify Application of a large number of nodes, Network simulator environment is required. This paper proposed interface module between network framework for sensor network application and co-simulator to unit test sensor network application. To conclude, developer can focus on sensor network application implementation only, so the improved integrated simulator contributes to increase development productivity.
주변 지역이 서울 지역의 SO₂ 농도 예측에 미치는 영향에 관한 연구
이정주,신동윤 龍仁大學校 自然科學硏究所 1999 自然科學硏究所論文誌 Vol.4 No.2
The purpose of this study was the established of atmosphere quality model at Seoul area. ISCST3 model was recommend by EPA and pollutant selected was SO2 because nun reaction and easy calculation exhaust pollutant. Comparison of measuring point concentration and predicted concentration of ISCST3 model. Regression was Y = 0.4516 X + 10.246 in Seoul and around area and Y = 0.4791 X + 11.155 in Seoul area and Relation was 0.59 in Seoul and around area and 0.57 in Seoul area. Predicted concentration was near predicted concentration in Seoul and around
Renovascular Hypertension Treated by Renal Artery Embolization
이정주,박세진,배기수,신재일 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.1
Renovascular hypertension is caused by narrowing of the arteries supplying the kidneys. There are several methods to treat renal artery stenosis, such as medications,percutaneous transluminal renal angioplasty, and atherosclerosis. A boy presented to our hospital with severe hypertension. Computed tomography angiogram revealed severe narrowing of the left renal artery and hypoplastic left kidney. Total renal artery embolizaton was performed to make a complete occlusion of the left renal artery. Follow-up renin and aldosterone levels were gradually decreased. The main advantage of renal artery embolization is that it is minimally invasive compared with extensive surgical procedures. Therefore, renal artery embolization should be considered as an alternative to surgical nephrectomy in pediatric patients with renovascular hypertension.
이정주,공경엽,이희진,강준,조정현 대한병리학회 2012 Journal of Pathology and Translational Medicine Vol.46 No.1
Background: Although core needle biopsy (CNB) is considered to be the standard technique for histological diagnosis of breast lesions, it is less reliable for diagnosing atypical ductal hyperplasia (ADH). We therefore assessed the characteristics of CNB-diagnosed ADH that are more likely to be associated with more advanced lesions on subsequent surgical excision. Methods: We retrospectively examined 239 consecutive CNBs, 127 of which were diagnosed as ADH following surgical excision, performed at Asan Medical Center between 1995 and 2010. Archival slides were analyzed for the number of cores per specimen, the number of ADH foci, and the ratio of ADH foci to number of cores (FC ratio). Results: We found that ADH foci in 3 or more cores (p=0.003) and the presence of ADH in 3 or more foci (p=0.002) were correlated with malignancy following excision lesion. Moreover, an FC>1.1 was significantly associated with malignancy in the subsequent excision (p=0.000). Conclusions: Including the number of ADH foci, the number of cores involved according to ADH, FC ratio, and histologic type in a pathology report of CNB may help in making clinical decisions about surgical excision.