http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
실시간과 온라인 서비스를 보장하기 위한 능동망 시스템 ANGLE
강세훈,문경덕,이중수,이영희 에스케이텔레콤 (주) 2000 Telecommunications Review Vol.10 No.3
인터넷의 급속한 성장과 더불어 인터넷 서비스가 빠르게 변화되며 다양해지고 있다. 최근에는 멀티미디어 서비스의 대중화로 실시간 전송 및 온라인 처리 보장과 같은 QoS 문제가 중요한 이슈로 부각되고 있다. 그러나, 기존 네트웍 환경은 새로운 기술을 채용하여 표준화 하는데 많은 시간이 소요되기 때문에 새로운 서비스를 유연하게 수용하는데 있어 현실적으로 한계를 갖고있다. 본 논문에서는, 라우터에서 서비스에 특화된 실행코드를 동적으로 로딩하여 실행함으로써 네트웍의 유연성과 기능성을 향상시킨 ANGLE 시스템을 제안한다. ANGLE 시스템은 새로운 개념의 인터넷 서비스를 효과적으로 지원하기 위해 서비스에 특화된 네트웍 기능을 동적으로 라우터에서 수행하여, 네트웍의 급격한 환경 변화에 많은 영향을 받지않고 QoS를 보장할 수 있는 플랫폼이다. 또한, 통합 접근 방식과 이산 접근 방식의 장점을 혼용함으로써 라우터의 유연성과 기능성을 향상시킴과 동시에 안정성을제공한다. ANGLE 시스템에 대한 구조 설명과 더불어, 이질의 환경을 가진 수신자간 실시간 멀티미디어 트래픽제어 메커니즘인 ATLM과 온라인 경매 시스템을 통해 ANGLE의 효용성을 검증한다.
강세훈,김경민,조동혁,강호철,정동진,정민영,Gang, Se-Hun,Kim, Gyeong-Min,Jo, Dong-Hyeok,Gang, Ho-Cheol,Jeong, Dong-Jin,Jeong, Min-Yeong 한국건강관리협회 2006 한국건강관리협회지 Vol.4 No.1
"본 논문은 대한내과학회지 2006년 제70권 제3호에 실렸던 논문으로 대한내과학회 편집위원회의 승인을 득하고 본 협회지에 게재함. Background : Diabetes mellitus is a major independent risk factor for atherosclerosis. In recent years non-invasive high resolution B-mode ultrasound methods have been developed to measure the intima-media thickness(IMT) of the carotid artery as an indicator for early atherosclerosis. Itis known that obesity plays a role in the development of type 2 diabetes and cardiovascular disease, and it has also been reported that not only the amount but also the distribution of body fat is important. This study investigated the relationship between obesity and the development of carotid atherosclerosis in type 2 diabetic patients. Methods: Carotid IMT was measured by ultrasound B-mode imaging in 144 patients with type 2diabetes mellitus. All subjects underwent assessment for the degree and distribution of obesity, the presence of coronary artery disease risk factors, and the presence of diabetic complications. Resuts: Carotid IMT was increased in the abdominal obese group defined by waist circurference. However, there was no significant difference in carotid TMT between the non-obese group and obese group as defined by body mass index, waist to hip ratio, and total body fat percent measured by bio electrical impedance analysis. There were positive correlations between carotid IMT and age, duration of diabetes, systolic blood pressure, and waist circumference. Multiple linear regression analysis revealed the variable that interacted independently with carotid IMT was age in type 2 diabetic patients. Carotid IMT was significantly increased in type 2 diabetic patients with macrovascular complications and microvascvlar complications .Conclusion: This study suggested that abdominal obesity rather than general obesity was associated with carotid atherosclerosis reflected by increment of carotid IMT in type 2 diabetic subjects.
강세훈,김영학,최효인,이은영,안정민,한승봉,이필형,노재형,윤성한,박덕우,강수진,이승환,이철환,문대혁,박성욱,박승정 연세대학교의과대학 2017 Yonsei medical journal Vol.58 No.5
Purpose: Few studies have reported on predicting prognosis using myocardial perfusion single-photon emission computed tomography(SPECT) during coronary artery disease (CAD) treatment. Therefore, we aimed to assess the clinical implications of myocardial perfusion SPECT during follow-up for CAD treatment. Materials and Methods: We enrolled 1153 patients who had abnormal results at index SPECT and underwent follow-up SPECT at intervals ≥6 months. Major adverse cardiac events (MACE) were compared in overall and 346 patient pairs after propensity-score (PS) matching. Results: Abnormal SPECT was associated with a significantly higher risk of MACE in comparison with normal SPECT over the medianof 6.3 years (32.3% vs. 19.8%; unadjusted p<0.001). After PS matching, abnormal SPECT posed a higher risk of MACE [32.1% vs. 19.1%; adjusted hazard ratio (HR)=1.73; 95% confidence interval (CI)=1.27–2.34; p<0.001] than normal SPECT. After PS matching,the risk of MACE was still higher in patients with abnormal follow-up SPECT in the revascularization group (30.2% vs. 17.9%; adjusted HR=1.73; 95% CI=1.15–2.59; p=0.008). Low ejection fraction [odds ratio (OR)=5.33; 95% CI=3.39–8.37; p<0.001] and medical treatment (OR=2.68; 95% CI=1.93–3.72; p<0.001) were independent clinical predictors of having an abnormal result on follow-up SPECT. Conclusion: Abnormal follow-up SPECT appears to be associated with a high risk of MACE during CAD treatment. Follow-up SPECT may play a potential role in identifying patients at high cardiovascular risk.
강세훈,이철환,윤성철,이필형,안정민,박덕우,강수진,이승환,김영학,박성욱,박승정 대한심장학회 2017 Korean Circulation Journal Vol.47 No.3
Background and Objectives: There is currently a limited amount of data that demonstrate the optimal revascularization strategy for chronic kidney disease (CKD) patients with multivessel coronary artery disease (CAD). We compared the long-term outcomes of percutaneous coronary intervention (PCI) with drug-eluting stents (DES) versus coronary artery bypass graft surgery (CABG) for multivessel CAD in patients with CKD. Subjects and Methods: We analyzed 2108 CKD patients (estimated glomerular filtration rate <60 mL/min/1.73 m2) with multivessel CAD that were treated with PCI with DES (n=1165) or CABG (n=943). The primary outcome was a composite of all causes of mortality, myocardial infarction, or stroke. The mean age was 66.9±9.1 years. Results: Median follow-up duration was 41.4 (interquartile range 12.1-75.5) months. The primary outcome occurred in 307 (26.4%) patients in the PCI group compared with 304 (32.2%) patients in the CABG group (adjusted hazard ratio [HR], 0.941; 95% confidence interval [CI], 0.79–1.12; p=0.493). The two groups exhibited similar rates of all-cause mortality (adjusted HR, 0.91; 95% CI, 0.77–1.09; p=0.295), myocardial infarction (adjusted HR, 1.86; 95% CI, 0.85–4.07; p=0.120) and stroke (3.2% vs. 4.8%; HR, 0.93; 95% CI, 0.57–1.61; p=0.758). However, PCI was associated with significantly increased rates of repeat revascularization (adjusted HR, 4.72; 95% CI, 3.20–6.96; p<0.001). Conclusion: Among patients with CKD and multivessel CAD, PCI with DES when compared with CABG resulted in similar rates of composite outcome of mortality from any cause, MI, or stroke; however, a higher risk of repeat revascularization was observed.
A Semantic Service Discovery Network for Large-Scale Ubiquitous Computing Environments
강세훈,이영희,이동만,Daewong Kim,현순주,벤리 한국전자통신연구원 2007 ETRI Journal Vol.29 No.5
This paper presents an efficient semantic service discovery scheme called UbiSearch for a large-scale ubiquitous computing environment. A semantic service discovery network in the semantic vector space is proposed where services that are semantically close to each other are mapped to nearby positions so that the similar services are registered in a cluster of resolvers. Using this mapping technique, the search space for a query is efficiently confined within a minimized cluster region while maintaining high accuracy in comparison to the centralized scheme. The proposed semantic service discovery network provides a number of novel features to evenly distribute service indexes to the resolvers and reduce the number of resolvers to visit. Our simulation study shows that UbiSearch provides good semantic searchability as compared to the centralized indexing system. At the same time, it supports scalable semantic queries with low communication overhead, balanced load distribution among resolvers for service registration and query processing, and personalized semantic matching.