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Real-time online interactive application (ROIA) is an emerging distributed application in recent years. Compared with other general distributed applications, ROIA has its own challenging features. In this paper, we focus on the architecture and state consistency of ROIA. First, the paper classifies the architectures of ROIA in detail and compares their merits and disadvantages. Then, the paper discusses...
Based on the geological parameters of LIAOHE oil field, a numerical model with interlayer was established by computer, the STARS block of CMG was employed to simulate steam assisted gravity drainage (SAGD) with vertical and horizontal wells, the influences of interlayer on SAGD, the expansion process of steam chamber (SC) and the production index was obtained and analyzed. The results indicate: whether...
An integrated design and optimization platform for vehicles vibration isolation system is presented. The integrated platform can not only direct the design by getting the precise analyze result of 3D models, but also carry through multi-objective optimization based on genetic algorithms. These can both expedite the optimization and improve the optimization result. Furthermore, we validate the reliability...
Software GNSS signal simulators produce the digital IF signal to test the algorithms of GNSS receiver. Because of the limitation of parallel computing capability that general CPU can provide, software GNSS simulator cannot generate signal synchronously when the sample rate is tens of MSPS. To solve this problem, a DDFS algorithm accelerated by CUDA technology is introduced. By optimizing the data...
Information system is a large-scale complex system. It includes many uncertain factors, as software, hardware, people and so on. As a result, information systems security risk is related to many ambiguous factors, what are difficult to measure, with ambiguity. This paper introduces the information system security risk generating mechanism, and based on the risk assessment of factors, builds information...
An improved algorithm for Particle Swarm Optimization (PSO) named Elite Particle Swarm Optimization with Mutation (EPSOM) is proposed in this paper. Elite particles and bad particles are distinguished from the swarm after some initial iteration steps. Bad particles are replaced with the same number of elite particles, and a new swarm is generated. To avoid losing diversity of the swarm and to decrease...
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