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김영민,김진호,이상호,이창규,박광덕,최준석 대한상하수도학회 2013 상하수도학회지 Vol.27 No.5
A cost analysis method for pretreament processes of a large scale seawater desalination plant was considered using a cost estimation model, WaTER (Water Treatment Estimation Routine). This model is based on cost functions of U.S. EPA to conduct economic analysis of water treatment facilities. A virtual seawater desalination plant which has pretreatment production capacity of 100,000 m3 per day was chosen as a model plant. Dual media filtration and microfiltration systems were compared as pretreatment process, and the following reverse osmosis process was modeled. As a result, microfiltration showed a price competitiveness in condition of operating with reverse osmosis process by reducing the loads of water treatment and membrane cleaning despite it’s high annual cost.
Co-occurrence Patterns of Bird Species in the World
김영민,홍성원,이유승,오기철,김구연,주기재 한국하천호수학회 2017 생태와 환경 Vol.50 No.4
In order to identify key nations and bird species of conservation concern we described multinational collaborations as defined using network analysis linked by birds that are found in all nations in the network. We used network analysis to assess the patterns in bird occurrence for 10,422 bird inventories from 244 countries and territories. Nations that are important in multinational collaborations for bird conservation were assessed using the centrality measures, closeness and betweenness centrality. Countries important for the multinational collaboration of bird conservation were examined based on their centrality measures, which included closeness and betweenness centralities. Comparatively, the co-occurrence network was divided into four groups that reveal different biogeographical structures. A group with higher closeness centrality included countries in southern Africa and had the potential to affect species in many other countries. Birds in countries in Asia, Australia and the South Pacific that are important to the cohesiveness of the global network had a higher score of betweenness centrality. Countries that had higher numbers of bird species and more extensively distributed bird species had higher centrality scores; in these countries, birds may act as excellent indicators of trends in the co-occurrence bird network. For effective bird conservation in the world, much stronger coordination among countries is required. Bird co-occurrence patterns can provide a suitable and powerful framework for understanding the complexity of co-occurrence patterns and consequences for multinational collaborations on bird conservation.
지반 구조물 상호작용을 고려한 터널 지보재 해석에 관한 연구
김영민 전주대학교 공학기술종합연구소 2002 전주대학교 공학기술종합연구소 학술논문집 Vol.8 No.1
Practical aspects of the application of analytical techniques to tunnel problems are reviewed with emphasis on medium-support interaction problems in tunnel. The results from a series of two dimensional, plane strain, finite element analyses of medium-her interaction for a circular tunnel are presented. Three types of medium properties are considered, namely, linear elastic, elasto-plastic, strain hardenin model. Also considered in these analyses is a simple sequence of excavation an liner placement. A comparative study of the effect of the material properties on the liner forces is made.
농작물 생육 관리를 위한 스마트 멀티센서 및 환경 모니터링 시스템
김영민,강의선 한국콘텐츠학회 2017 한국콘텐츠학회논문지 Vol.17 No.12
In this paper, we introduce smart multi-sensor and environment monitoring system for managing growth and development of the agricultural produces. This system is able to help to collect the sensor information about the growing environment and to monitor in wired and wireless environments. Existing systems installed each kinds of sensor to gather information. In this case, installation cost was incurred about each sensor and the position of sensor set up manually. Therefore, this paper designed and implemented smart multi-sensor that simplify sensors in order to minimize the cost for installing each sensor. In addition, this system is able to monitor position and data information of smart multi-sensor using RFID communication 본 논문에서는 농작물의 생육 관리를 위하여 농작물에 설치된 센서 정보를 수집하고 모니터링 할 수 있는 스마트 멀티 센서와 환경 모니터링 시스템 소개하고자 한다. 기존의 농작물 모니터링 시스템에서는 각 센서의 정보를 취득하기 위해 센서를 종류별로 농작물에 설치하였다. 이 과정에서 각 센서들의 설치 비용이 발생하며 센서 설치 위치를 수동으로 설정해야 하는 번거로움이 있었다. 따라서 본 논문에서는 센서의 설치 비용을 최소화하기 위하여 센서들을 단일화한 스마트 멀티 센서를 설계 및 구현하였고 RFID 통신을 이용하여 설치된 스마트 멀티 센서의 위치 정보 및 센서 정보를 모니터링 할 수 있도록 설계하였다.
급성 골수성 백혈병으로 항암치료 중 발생한 파종 칸디다증과 뒤 이은 돌발 폐 털곰팡이증 1예
김영민,공시은,김수정,김하늘,이경은,이석종,이하니,조민정,이정우,이동건 대한감염학회 2012 Infection and Chemotherapy Vol.44 No.6
Invasive fungal infections (IFIs) are an important cause of morbidity and mortality in patients with acute leukemia who are receiving chemotherapy. Primary prophylaxis with antifungal agents has become the standard of care in this setting; as a result, invasive candidiasis has shown a significant reduction. However, broad use of antifungal prophylaxis has led to an increase in breakthrough candidiasis with reduced susceptibility or resistance to fluconazole. In addition, an increase in breakthrough mucormycosis has been reported in studies of voriconazole prophylaxis. We report on a case of disseminated candidiasis and subsequent breakthrough pulmonary mucormycosis in a patient with acute myeloid leukemia undergoing consolidation chemotherapy. To the best of our knowledge, in Korea,this is the first report of these two independent IFIs occurring in a single patient.