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김도명(Domyung Kim),남수현(Suhyun Nam),류시대(Sidae Ryu),장동훈(Donghoon Jang),석진영(Jinyoung Suk),박정주(Jeongjoo Park),김성남(Sungnam Kim),배재성(Jaesung Bae) 항공우주시스템공학회 2018 항공우주시스템공학회 학술대회 발표집 Vol.2018 No.11
고정익 항공기의 날개 변형에 따른 비행특성 변화와 이에 따른 비행제어법칙을 실증하기 위하여 모핑날개 무인항공기 시스템을 제작하였다. 비행시험용으로 제작된 기체는 향후 개발될 모핑 메커니즘이 작동하는 실제 모핑날개 스팬의 최대/최소 변형을 고려한 고정된 시험용 날개를 적용하고 각각의 모핑 상태에 대한 비행성을 확인함을 목적으로 하였다. 비행시험을 위하여 비행제어컴퓨터와 지상제어시스템을 개발하였으며 지상에서 비행제어컴퓨터의 탑재 운용로직 및 제어법칙의 동작을 확인하였으며 지상제어시스템과 연동시험을 통하여 비행시험을 위한 시스템 통합을 완료하였다.
김동민(Dongmin Kim),양승원(Seungwon Yang),김도명(Domyung Kim),석진영(Jinyoung Suk),김승균(Seungkeun Kim) 한국항공우주학회 2020 韓國航空宇宙學會誌 Vol.48 No.7
본 논문은 PSD와 이종 센서 융합을 이용한 상대 항법 알고리즘에 대해 기술한다. 추종 시스템(Chaser)과 목표 시스템(Target) 간의 상대 항법을 수행하기 위해 하드웨어 시스템을 구축하고 알고리즘을 설계하여 시뮬레이션을 수행하였다. 이를 통해 상대 거리에 따른 오차 발생 경향을 확인하여 이종 센서 융합에 대한 분석을 수행하였다. 이후 구축한 하드웨어 시스템으로 지상 시험 환경을 구성하여 측정값을 획득하고 이를 후처리하여 상대 항법 알고리즘의 성능을 최종적으로 확인하였다. This paper describes a relative navigation algorithm using PSD(Position Sensitive Detector) and heterogeneous sensor fusion. In order to perform relative navigation between a target and a chaser, a hardware system is constructed and simulations are conducted, using the relative navigation algorithm considering the hardware system. By analyzing errors through the simulations, advantages of using the heterogeneous sensor fusion are found. Finally, navigation performance is verified under an experimental environment established to obtain sensor data from the hardware system for data post-processing.
Necessity for a National Carcinogen List in Korea, Based on International Harmonization
Leem, Jong Han,Kim, Hwan Cheol,Park, Myungsook,Kim, Jung Ae,Kim, Shin-Bum,Ha, Mina,Lim, Min-Kyeong,Kim, Jeongseon,Park, Eun Young,Paek, Domyung The Korean Society of Environmental Toxicology 2013 환경독성보건학회지 Vol.28 No.-
Cancer has been the leading cause of death in Korea for the last 30 years. Cancer patients' 5-year survival rate between 2005 and 2009 was 62.0%, representing a highly advanced standard of care, as much as developed countries in the EU and the US. The Korean government formulated its first 10-year plan for cancer control in 1996 and has been carrying out a second 10-year plan for cancer control since 2006. But despite the Korean government's efforts, the cancer burden in Korea continues to increase. Many separate laws have gone into effect concerning the management of carcinogen exposure. However, there are no integrated regulatory laws or management systems against carcinogen exposure in Korea. Dead zones remain where carcinogen exposure cannot be controlled properly in Korea. In this paper, we suggest the need to establish a national carcinogen list based on international harmonization as a prerequisite for a paradigm shift in cancer control policy from treatment to primary prevention.
Humidifier disinfectant disaster: what is known and what needs to be clarified
Kim, Sungkyoon,Paek, Domyung The Korean Society of Environmental Toxicology 2016 환경독성보건학회지 Vol.31 No.-
Objectives After the initial investigations by the Korea Centers for Disease Control in 2011, over 1000 suspicious cases of humidifier disinfectant (HD) victims were subsequently reported by 2015, and numbers are still increasing dramatically in 2016 in the midst of the prosecutors' office investigation. This study attempts to summarize the current understandings of the related health effects of HD based upon a systemic review of published epidemiologic studies and toxicology investigations. Methods Published studies of HDs were searched through PubMed and TOXLINE under the search words 'humidifier disinfectant,' and related reports were identified from the references and published report list of regulatory agencies including the Korean National Institute of Environmental Research, US Environmental Protection Agency, and EU European Chemicals Agency. Results Case reports and epidemiologic studies have reported the clinical features of severe forms of HD lung damage, together with epidemiologic findings of seasonal occurrence and demographic variations, including the heightened susceptibility of young children. Toxicological studies have reported inhalation toxicities together with positive findings of in vitro genotoxicity studies. Conclusions This study examined unsolved issues based on cases of upper respiratory diseases and diseases of other organs, including cancers, among suspected victims of HDs. These issues should be clarified in future research for the management and prevention of health effects from HDs and chemicals of other related household products.
Kyusung Kim,Sung-il Cho,Domyung Paek 대한직업환경의학회 2019 대한직업환경의학회지 Vol.31 No.-
Background: Discrimination is a representative social determinant of health. Presenteeism is defined as presenting to work despite of illness and is an indicator of group health. We investigated the association of discrimination and presenteeism with cardiovascular disease using Korean data. Methods: This study used the fourth Korea Working Conditions Survey (2014) data of 27,662 wage workers (employees). Presenteeism and discrimination related to age, sex, education, birth region, and employment type were ascertained. Self-reported cardiovascular disease was also assessed using the survey questionnaire. General and occupational characteristics found to be significant in univariate analyses were entered into a multivariate logistic regression analysis of the association of discrimination and presenteeism with cardiovascular disease. We also calculated the odds ratios of multiple discriminations and/or presenteeism for cardiovascular disease. Results: In the univariate analyses, sex, age, education, monthly income, employment type, occupation, hours worked per week, workplace scale, and shift work were significantly associated with cardiovascular disease. A multivariate logistic regression analysis adjusted for general and occupational characteristics showed that discrimination and presenteeism were significantly associated with cardiovascular disease. Finally, the association with cardiovascular disease was strongest when both multiple discriminations and presenteeism were present. Conclusions: Discrimination and presenteeism are associated with cardiovascular disease, and this association was stronger in the presence of multiple types of discrimination and presenteeism.
백도명,이원진,김대성 大韓産業醫學會 1993 대한직업환경의학회지 Vol.5 No.2
본 연구는 직업병유소견자고 판정된 근로자들의 사후관리 실태 및 이들을 유발시킨 유해환경에 대한 개선여부를 파악하고, 이들 사후관리 실태에 영향을 미치는 요인들을 분석함으로서 바람직한 사후관리대책을 위한 기초자료를 제공하고자 실시하였다. 조사대상으로는 모 특수건강진단 기관에서 1991년도에 실시한 특수건강진단결과 직업병유소견자(D( ))로 판정받은 47개 사업장 104명의 근로자들로 하였으며 조사방법은 해당 사업장을 저자가 직접 찾아다니며 직업병유소견자 및 사업장 보건업무 담당자를 면접조사 하는 방식을 취하였다. 조사는 1992년 9월부터 1992년 12월까지 실시하였으며 조사내용들로는 1) 근로자 요인으로서 질환명, 근무년수, 월평균 봉급, 연령, 학력 등을 2) 사업장요인으로는 사업장의 규모, 업종, 노동조합 및 보건관리자의 유무, 지역, 해당 지방노동관서의 방문정도 등을 3) 사후관리의 내용들로는 근로자 조치 현황, 보건교육실시 여부, 요양신청 및 보상여부, 유해공정의 개선여부, 검진결과의 통보여부 등을 4) 그리고 현장 조사를 통해서 해당 근로자와 사업장 담당자들이 직업병유소견자 판정 및 사후관리에 관해 느끼는 문제점들을 조사하여 다음과 같은 결과를 얻었다. 1. 1991년도에 직업병유소견자 판정을 받은 104 명의 근로자중 판정 받기 이전 부서와 같은 부서에서 그대로 근무하는 경우가 50.0%로 가장 많았고 퇴사한 경우가 29.8%, 작업전환된 경우가 20.2%로 나타났다. 2. 조사된 47개 사업장중 직업병유소견자들이 근무하던 부서의 작업 공정이 개선된 사업장은 12.8%인 6개사에 불과하였으며 85.1%의 40개 사업장에서는 작업환경의 변화가 없었다. 3. 직업병유소견자 자신이 검진결과를 통보 받았다고 응답한 근로자는 64명(61.6%)이었으며 통보받지 못했다고 응답한 근로자는 23명(22.1%)이었다. 4. 요양신청이 이루어진 경우는 전체 47개 사업장 104명의 근로자등 15개 사업장의 39명(37.5%)에서 실시되었고 이중에서 보상이 이루어진 경우는 5개 사업장에 있어서 5명의 근로자들(4.8%)에서 이루어 졌다. 5. 직업병유소견자들의 사후관리 실태와 유의한 관련성을 보인 변수들은 사업장의 전체 근로자 수, 사업장내 노동조합과 보건관리자의 유무, 질병의 종류등이었다. Workers in hazardous workplace should receive periodic health examination and be treated or removed from the hazardous exposures depending on the screening result. However, not all workplaces can provide alternative jobs, and some workers are diagnosed repeatedly with the same disease in the periodic health examination. To examine the follow up state of workers with occupational diseases diagnosed in 1991 in the periodic health examination by one Health Examination Institute, all 104 workers diagnosed in 47 workplaces were interviewed from September to December 1992 about their disposition results. The summary of the results is as follows ; 1. Among 104 workers, 52 workers(50.0%) remained in same department, 31 workers(29.8%) resigned their job, 21 workers(20.2%) were transferred to different department. 2. Among 47 workplaces, only 6 workplaces(12.8%) changed their work environment while 40 workplaces(85.1%) had no such changes and one workplace(2.1%) was closed. 3. Among the respondents, 64 workers(61.6%) answered that they received their personal health examination report while 23 workers(22.1%) did not. 4. Among 104 workers, 39 workers(37.5%) had received further examination and finally only five workers(4.8%) were compensated for the disease. 5. In this study, follow up state of the workers diagnosed as occupational disease showed significant association with the presence of labor union, health nanager, number of workers and the type of diseases.