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RISS 인기검색어
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- 저자 : Yaoming Liu (검색결과 6 건)
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Distributed and Real-time Integrated Simulation System on Avionics
Yaoming Zhou,Yaolong Liu,Shaowei Li,Yuhong Jia 한국항공우주학회 2017 International Journal of Aeronautical and Space Sc Vol.18 No.3
In order to achieve iterative design in early R&D period, a Distributed and Real-time Integrated Simulation System for avionics based on a Model-Based Systems Engineering (MBSE) method is proposed. The proposed simulation system includes driver, simulation model, monitor, flight visual model and aircraft external model. The effect of this simulation system in iterative design and system verification is testified by several use cases. The result shows that the simulation system, which can play an important role in iterative design and system verification, can reduce project costs and shorten the entire R&D period.
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Distributed and Real-time Integrated Simulation System on Avionics
Zhou, Yaoming,Liu, Yaolong,Li, Shaowei,Jia, Yuhong The Korean Society for Aeronautical and Space Scie 2017 International Journal of Aeronautical and Space Sc Vol.18 No.3
In order to achieve iterative design in early R&D period, a Distributed and Real-time Integrated Simulation System for avionics based on a Model-Based Systems Engineering (MBSE) method is proposed. The proposed simulation system includes driver, simulation model, monitor, flight visual model and aircraft external model.The effect of this simulation system in iterative design and system verification is testified by several use cases. The result shows that the simulation system, which can play an important role in iterative design and system verification, can reduce project costs and shorten the entire R&D period.
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An Improved Two-Factor Mutual Authentication Scheme with Key Agreement in Wireless Sensor Networks
( Jiping Li ),( Yaoming Ding ),( Zenggang Xiong ),( Shouyin Liu ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.11
As a main component of Internet of Things (IoTs), the wireless sensor networks (WSNs) have been widely applied to various areas, including environment monitoring, health monitoring of human body, farming, commercial manufacture, reconnaissance mission in military, and calamity alert etc. Meanwhile, the privacy concerns also arise when the users are required to get the real-time data from the sensor nodes directly. To solve this problem, several user authentication and key agreement schemes with a smart card and a password have been proposed in the past years. However, these schemes are vulnerable to some attacks such as offline password guessing attack, user impersonation attack by using attacker’s own smart card, sensor node impersonation attack and gateway node bypassing attack. In this paper, we propose an improved scheme which can resist a wide variety of attacks in WSNs. Cryptanalysis and performance analysis show that our scheme can solve the weaknesses of previously proposed schemes and enhance security requirements while maintaining low computational cost.
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Yuan Gao,Hu Liu,Yaoming Zhou 한국항공우주학회 2019 International Journal of Aeronautical and Space Sc Vol.20 No.1
In the military field, equipment development has increasingly focused on the system-of-systems (SoS) oriented combat. To answer the question “how to judge the success of a mission in SoS combat”, this paper proposes a concept of “Mission Success Space (MSS)”. After designing MSS and computing Mission Success Rate (MSR), an evaluation method of effectiveness is defined to quantify the contribution of a combat aircraft to a combat SoS by comparing MSRs of the SoS with and without this aircraft. During MSS design procedure, Mission Success Function (MSF) plays an important role since it gives key parts where the success criterion is changed. In the simulation case, a quadratic function and an S-curve function are used as MSFs to verify themethod proposed. In addition, based on the Gaussian fitting results, a new function using inverse design is studied by finding bilateral quantiles of the fitting curves. Finally, the MSS of inverse design is chosen as the best for this case after analyzing the contribution results of these three functions.
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Peng Wang,Tingchen Cui,Yadong Yang,Jialu Li,Yaoming Su,Na Liu,Hong-Mei Li 한국생물공학회 2022 Biotechnology and Bioprocess Engineering Vol.27 No.3
The elimination of 1,4-dioxane (dioxane), a persistent organic pollutant, is a great challenge owing to its high hydrophilicity and chemical stability. Cometabolic bioremediation technology is an effective approach to remove many organic pollutants. Because of its eco-friendly and inexpensive properties, molasses is widely used as an auxiliary biomaterial to clean up compound-contaminated sites. In this study, a newly isolated bacterium Acinetobacter sp. M21 could effectively remove dioxane using molasses without any apparent lag phase. Under the optimized molasses dosage of 0.3%, M21 could remove 500 mg/L dioxane by 60.0 ± 2.8% within 20 days with a maximum dioxane degradation rate of 1.3 ± 0.2 mg-dioxane/L/h in the first day, and exhibited extraordinary dioxane tolerance up to 1,000 mg/L, while so high dose of dioxane negatively affected the cell growth. The degradation pathway of dioxane was also determined, and was supported by the detection of 2-hydroxyethoxyacetic acid as the key metabolite of dioxane. High level degradation activity of M21 to 20 mg/L dioxane was maintained over a variable of pH (5-11), temperatures (15-45°C), and salinities (up to 8%, as NaCl wt). This is the first report linking the cometabolism of dioxane and molasses by Acinetobacter sp. M21, a bacterium that shows great potential for field dioxane bioremediation.
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Ming-Xiang Xiong,Guangming Chen,Yue-Ling Long,Hairui Cui,Yaoming Liu 국제구조공학회 2022 Steel and Composite Structures, An International J Vol.43 No.2
Recycled aggregate concrete (RAC) is rarely used in load-carrying structural members. To widen its structural application, the compressive behavior of a promising type of composite column, steel-fiber reinforced polymer (FRP) doubletube confined RAC column, has been experimentally and analytically investigated in this study. The objectives are the different performance of such columns from their counterparts using natural aggregate concrete (NAC) and the different mechanisms of the double-tube and single-tube confined concrete. The single-tube confined concrete refers to that in concrete-filled steel tubular (CFST) columns and concrete-filled FRP tubular (CFFT) columns. The test results showed that the use of recycled coarse aggregates (RCA) affected the axial load-strain response in terms of deformation capacity but such effect could be eliminated with the increasing confinement. The composite effect can be triggered by the double confinement of the steel and carbon FRP (CFRP) tubes but not by the steel and polyethylene terephthalate (PET) FRP tubes. The proposed analysis-oriented stress-strain model is capable to capture the load-deformation history of such steel-FRP double-tube confined concrete columns under axial compression.
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