http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김영남,김영아,양애리,이복희 한국식품영양과학회 2014 Preventive Nutrition and Food Science Vol.19 No.4
Limited epidemiologic data is available regarding the cardiovascular effects of mercury exposure. The purpose of this study was to determine the relationship between mercury exposure from fish consumption and cardiovascular disease in a nationally representative sample of Korean adults using the Fourth Korea National Health and Nutrition Examination Survey (KNHANES IV 2008∼2009). Survey logistic regression models accounting for the complex sampling were used to estimate the odds ratios (OR) adjusted for fish consumption frequency, age, education, individual annual income, household annual income, body mass index (BMI), waist circumference (WC), alcohol consumption status, and smoking status. The mean blood mercury level in the population was 5.44 ㎍/L. Trends toward increased blood mercury levels were seen for increased education level (P=0.0011), BMI (P<0.0001), WC (P<0.0001), and fish (i.e., anchovy) consumption frequency (P=0.0007). The unadjusted OR for hypertension in the highest blood mercury quartile was 1.450 [95% confidential interval (CI): 1.106∼1.901] times higher than that of the lowest quartile. The fish consumption-adjusted OR for hypertension in the highest blood mercury quartile was 1.550 (95% CI: 1.131∼ 2.123) times higher than that of the lowest quartile, and the OR for myocardial infarction or angina in the highest blood mercury quartile was 3.334 (95% CI: 1.338∼8.308) times higher than that of the lowest quartile. No associations were observed between blood mercury levels and stroke. These findings suggest that mercury in the blood may be associated with an increased risk of hypertension and myocardial infarction or angina in the general Korean population.
교량 구조물 손상탐지를 위한 Open Set Recognition 기반 다중손상 인식 모델 개발
김영남,조준상,김준경,김문현,김진평 대한토목학회 2022 대한토목학회논문집 Vol.42 No.1
Currently, the number of bridge structures in Korea is continuously increasing and enlarged, and the number of old bridges that havebeen in service for more than 30 years is also steadily increasing. Bridge aging is being treated as a serious social problem not only in Korea but also around the world, and the existing manpower-centered inspection method is revealing its limitations. Recently, various bridge damage detection studies using deep learning-based image processing algorithms have been conducted, but due to the limitationsof the bridge damage data set, most of the bridge damage detection studies are mainly limited to one type of crack, which is also based on a close set classification model. As a detection method, when applied to an actual bridge image, a serious misrecognition problem may occur due to input images of an unknown class such as a background or other objects. In this study, five types of bridge damageincluding crack were defined and a data set was built, trained as a deep learning model, and an open set recognition-based bridge multiple damage recognition model applied with OpenMax algorithm was constructed. And after performing classification andrecognition performance evaluation on the open set including untrained images, the results were analyzed.
김영남,박상수,김문국 국방기술품질원 2022 국방품질연구논집 Vol.4 No.2
회전익항공기는 기술적 난이도와 부가가치가 높은 대표적인 첨단기술 집약체로서 민-군 간 기술겸용성이 다른 항공기에 비해 우수하다. 이에 따라 민-군 겸용 헬기의 개발이 지속적으로 이뤄지고 있다. 감항인증은 항공기 개발 및 개조 시 구조, 강도, 성능 등 비행하기에 적합한 안전성과 신뢰성을 갖추었는지 확인하는 과정으로 항공기 개발시 반드시 거쳐야 하는 관문이다. 감항인증 단계 중 설계단계에서의 비행안전성 확보 여부를 판단하기 위해 조류충돌 등의 핵심기술분야에 대한 입증이 이뤄지며, 특히 결빙보호에 대한 엄격한 검증이 요구된다. 결빙은 급격한 조종성 저하 및 엔진 정지를 야기하고, 심할 경우 사고로 이어질 수 있다. 이에 결빙 관련 감항인증기준 설정이 매우 중요하나, 관련 연구가 미비한 실정이다. 이러한 사항에 착안하여 본 연구에서는 대표적인 군용 회전익항공기인 수리온 항공기의 감항인증기준 및 입증사례를 고찰하였다. 본 연구 결과는 추후 진행될 회전익항공기 개발사업의 결빙 감항인증기준 식별 및 입증을 위한 가이드라인으로 활용될 수 있을 것이며, 비행안전이 확보된 회전익항공기 개발에 기여할 수 있을 것으로 기대한다.
Visual Lisp을 이용한 측정용 마스터기어 자동설계 프로그램 개발
김영남,이성수 한국공작기계학회 2000 한국공작기계학회 추계학술대회논문집 Vol.2000 No.-
This paper is about automatic design of measuring master gears. Master gears are usually thought of as gears of extreme accuracy level, but are better defined as gages to check the meshing action of production gears. This is usually not recognized because most mechanical gages are associated with static measurements rather than having the form of machine elements used in a functional check involving machine motion. In this paper the interface that allows beginners to design easily and quickly is provided. The addition and modification of data is easy and the reduced design lead time is feasible with the program even though users don't know much about program since it is developed with Visual Lisp and DCL.