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실시간 데이터 분배를 위한 인터넷 기반의 모니터링 서비스 설계 및 구현
강민성,김도현,변영철 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.1
최근 정보화의 급성장과 더불어 데이터베이스의 이용이 급속히 증가하고 있다. 더불어 유비쿼터스 컴퓨팅 환경이 도입되면서 데이터베이스는 단순히 데이터를 저장하는 기능뿐만 아디라 실시간 데이터를 감시하여 사용자에게 전달하는 부가 기능이 요구되고 있다. 이를 위해 데이터의 변화를 이벤트화하는 데이터베이스의 트리거 기능이 제공되고 있으나 트리거는 외부 응용과 상호작용하는데 어려움이 있다. 본 논문에서는 이를 해결하기 위해 확장저장프로시저를 이용하여 외부 응용에게 이벤트 데이터를 전달함으로써 테이블을 실시간으로 감시하여 다수의 응용 서비스에게 제공하기 위한 모니터링 서비스를 설계하고 구현한다. 모니터링 서버는 데이터베이스 테이블의 이벤트를 트리거를 통해 감지하고 모니터링 서버에 등록된 응용 서비스로 데이터를 필터링하여 분산 처리한다. 이를 통하여 실시간 데이터를 감시하여 다양한 응용 서비스에 유비쿼터스 서비스를 제공할 수 있을 것으로 생각한다.
강민성,권영국 한국소비자안전학회 2017 한국소비자안전학회지 Vol.7 No.2
The industrial accident rate has been on a slight downward trend in the past five years, but the number of deaths resulting from industrial accidents has stagnated in the 1,800s. Therefore, the study attempted to improve unsafe behavior, which accounts for a large proportion of industrial accidents. Because a variety of factors affect unsafe behavior and there are limitations in quantifying them, the study attempted to decrease the industrial accident rate in the workplace by promoting the superordinate concept of safety culture. The present study distinguishes the level of safety culture into five stages based on data for distinguishing safety culture levels used in HSE(Health and Safety Executive) overseas. The study also conducted the following activities in order to present improvement activities and tasks related to safety and health necessary at each level. First, the study presents safety and health improvement activities and tasks necessary at each stage by interviewing expert groups, and subdivides their importance into high, intermediate, and low within each stage. Second, the study conducted an inquiry on the actual conditions of safety culture of domestic companies and found that all factors affect the level of safety culture but in order to disclose a clear difference, reduced the top eight factors to four factors by means of multiple regression analysis. Third, the study confirmed four factors that greatly affected the level of safety culture through multiple regression analysis and presented additional safety and health improvement activities and tasks related to each factor. Companies will be able to self-assess their safety culture levels and systematically form safety and health improvement activities and tasks at each level by using data from the present study. Consequently, this will contribute to the improvement of domestic safety culture levels by allowing the management of safety culture levels in accordance with the size of the workplace.
강민성,안병일 한국농업경제학회 2022 農業經濟硏究 Vol.63 No.3
This study proposes a theoretical method for evaluating the effects of food assistance programs in terms of consumer welfare. In particular, we develope a mechanism to derive the equivalent variation to measure the welfare effects of changing the payment method of food assistance programs from discount and in-kind transfer to e-voucher. Further, in order to intuitively present the aforementioned theoretical discussion, this study attempts to visualize the changes in utility and budget constraint based on the economic theory on consumer choice. The results of the graphical analysis show that beneficiaries can achieve a higher level of utility when the benefits are paid through e-voucher system rather than through in-kind transfer. However, it is found that the sign of the welfare effect is varied across the characteristics of consumers when changing the payment method from discount to e-voucher.
전기방사에 의한 폴리아미드/다중벽 탄소나노튜브 나노복합체섬유의 제조
강민성,권순민,김돈영,김훈식,진형준,Kang, Min-Sung,Kwon, Soon-Min,Kim, Don-Young,Kim, Hun-Sik,Jin, Hyoung-Joon 한국섬유공학회 2008 한국섬유공학회지 Vol.45 No.3
This study used a new and simple processing route to incorporate multiwalled carbon nanotubes (MWCNTs) into a polymer matrix via in-situ interfacial polymerization and electrospinning. Poly(hexamethylene sebacamide) (nylon 610)/MWCNT composites were prepared using two liquid phases containing the reactants and MWCNT. One phase contained a solution of sebacoyl chloride in carbon tetrachloride and the other contained a solution of hexamethylenediamine and MWCNT in water, which was prepared by sonication with a surfactant. Electrospinning of the composite solution produced fibers with well embedded MWCNT. We investigated morphology of individual MWCNT incorporating in nylon 610 fibers by scanning electron microscopy and transmssion electron microscopy and the electrical conductivity of the electro spun nylon 610 fibers with MWCNT.