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With the advent of embedded and mobile computing techniques, software systems are increasingly operated in open and dynamic environments. Such systems desire self-adaptive capabilities. This paper proposes an agent-oriented approach to the modeling and simulation of distributed adaptive systems. The approach enables to construct structural and behavioral models at a high abstraction level, and to...
Active Distribution Network (ADN) implements the operation and consumption of distributed energy resources (DERs), especially in the use of renewable ones, by hierarchical and distributed coordination control mode. Plenty of advanced communication and control technologies must be integrated in ADN. In this paper, a new method of co-simulation for ADN is proposed based on Ptolemy II and Simulink. In...
Recently, the fast development of GPU (graphic processing unit) provides a novel efficient platform for SAR (synthetic aperture radar) raw echo signal simulation. Based on the platform, this paper presents an efficient raw echo signal simulation method for missile-borne SAR. In the method, scene data is firstly segmented into data blocks according to different areas in azimuth track. Then the simulation...
In this paper, a new multi-objective optimization model of wood biomass gasification process has been established based on the research of literature, and used the parallel selection genetic algorithm as optimization method to optimize the parameters of wood gasification process. The calculation result shows that parameters optimization target value is very close to the experimental value when the...
3rd generation mobile communication networks (3G) have been heralded as a great shift that will make the market competition to be fierce increasingly. In this situation, the telecom operators are improving service quality to develop 3G users. Based on the discussion of the basic principle of Customer Perceived Service Quality Model and SERVQUAL Model, this paper has improved them for the characteristics...
We studied static data management problem based on data merging in general networks with object to minimize the total costs. By using greedy and LP-dual method, an initial placement is acquired. Given network G=(V, E) and data set X, we can achieve a constant ratio approximation algorithm.The key of our method is to construct some clusters based on hierarchical structure for requests. In order to...
This study was design to test the reliability and validity of test via mobile phone based platform (MPBT) administered into potential PTSD sufferings in Mianzhu, Sichuan province, and examine the equivalence with traditional paper-and-pencil test (PPT) counterpart and gender differences. In the case of Children's Revised Impact of Event Scale (CRIES), the MPBT form had acceptable psychometric properties,...
Service-oriented computing is becoming a direction of computing technology. For realising the mission of service-oriented computing, service-oriented architecture has been proposed to facilitate the application development via discoverable services distributed on Internet. That brings out service-oriented modelling as a new technical area to provide modelling and analysis techniques of service-oriented...
In view of the great potential in parallel processing and ready implementation via hardware, neural networks are now often employed to solve online matrix algebraic problems. Recently, a special kind of recurrent neural network has been proposed by Zhang et al, which could be generalized to solving online Lyapunov equation with time-varying coefficient matrices. In comparison with gradient-based neural...
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