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In this paper, a low-dimensional atmosphere model with general circulation is researched. The model is the classical Lorenz-84 system combined with seasonal force. The stability and the chaotic behavior of the seasonal forcing model are studied. By means of the Lyapunov exponents, the bifurcation map, phase diagram and Poincare section, the dynamical behaviors of the system are described and various...
This paper presents a novel signal analysis method by combining ICA and EEMD algorithms, which can be used for decomposition and feature extraction of non-stationary random signals. The features of ICA and EEMD algorithm were analyzed. Simulations verified the feasibility of combining the two algorithms. The ICA and EEMD combined algorithm has good validity and practicality in the impact acceleration...
By referencing the subject data storage idea in the areas of data warehouse and service-oriented analysis method, we proposed a two-stage method to create SOA-based data model including: (i) building a subject domain E-R data entities model, and (ii) building service data model. We described the data model from the layered point of view, where three layers are physical data layer, data aggregation...
According to system modeling thoughts and methods, the conformation model of information naval gun weapon system is established in this article. First, functional needs of information naval gun weapon system, factors composing the function is analyzed, and the resolving model for factors is established, at last, the conformation model of information naval gun weapon system is established by analyzing...
In this paper we use the normal cloud model tools to study vehicle maintenance behavior of customers in the vehicle maintenance service industry. We construct standards clouds in accordance with the standards of industry and compare the standard clouds with customer clouds to determine which type that the customer should be. Doing this may help vehicle maintenance service persons analyze the characters...
Aims at the problems of modeling and analyzing difficultly for the ship-board C4ISR systems, the functions and structures of the systems are analyzed, the modeling expression scheme using Petri nets is put forward, the functions characteristics of the systems are discussed, the suitable modeling approaches for the functions of the systems are introduced, that the modeling means based on Petri nets...
It is important to detect defects in wood, when it reduce the performance. The data and signal processing technology providing researchers with more damage identification problem solution ideas and methods. This article explore the wavelet analysis and artificial neural network for the wood defects based on non-destructive testing, and build an artificial neural network model for wood non-destructive...
According to the active service and future-oriented service of service-mining theory, as well as the theory of Kuiperspsila Qualitative Simulation, this paper puts forward a model of Qualitative Simulation that describes and predicts the changing process of customer churn. By applying causality graph, the factor system influencing customer churn is designed and concepts like decision variables, state...
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