Applied Mechanics and Materials Vols. 687-691

Abstract: By observing that the infinite triangle obtained from some generalized harmonic numbers follows a Riordan array, we using connections between the Stirling numbers of both kinds and other inverse generalized harmonic numbers. we proved some combinatorial sums and inverse generalized harmonic number identities.

Abstract: This paper proposes an automatic viewpoint selection algorithm based on the particle swarm optimization. The method introduces particle swarm optimization algorithm into the design of transfer function and viewpoint selection. By the method, the search for the transfer function and the optimal viewpoint are redeveloped as a global optimization problem to reduce the reluctant computations and interactions. And the image sequence focuses on the interesting part and displays the objects on the optimal position.

Abstract: To predict the fault severity of aircraft and its equipments, a modeling and predicting method based on Relevance Vector Machine (RVM) under Bayesian framework is proposed to solve the problem. First the principle and realization step of RVM are detailed, and then RVM is introduced in prediction of fault severity of aircraft and its equipments. The prediction result indicates that the proposed model has a good prediction to fault severity of aircraft and its equipments.

Abstract: The model capability of Support Vector Machine (SVM) relies on the selection of kernel function. To obtain a better application modeling of SVM, the wavelet kernel function that satisfies Merce condition is introduced to use the kernel function of SVM, achieving a good effect. In the paper, on the basis of wavelet kernel function, a wavelet derivation kernel function is proposed in the application of SVM for higher accuracy. An actual example on nonlinear function approximation shows that SVM regression model has a satisfactory approximation effect, and also support an effective nonlinear modeling method.

Abstract: This paper directly adopts evidence reasoning formula to calculate sensor information fusion result. The amount of calculation and calculation time delay increase with the increasing number of target found, uses two recursive calculation ways of evidence combination to calculate results, and proposes a fusion algorithm based on matrix analysis, using matlab software and C language programming to realize the method and calculate by an example. The results prove that the fusion result calculated by the method gets the same result as that of evidence reasoning synthesis formula, but the time needed for calculation will be reduced.

Abstract: Traditional random forest algorithm is difficult to achieve very good effect for the classification of small sample data set. Because in the process of repeated random selection, selection sample is little, resulting in trees with very small degree of difference, which floods right decisions, makes bigger generalization error of the model, and the predict rate is reduced. For the sample size of sepsis cases data, this paper adopts for parameters used in random forest modeling interval division choice; divide feature interval into high correlation and uncertain correlation intervals; select data from two intervals respectively for modeling. Eventually reduce model generalization error, and improve accuracy of prediction.

Abstract: Two main requirements of the optimization problems are included: one is finding the global minimum, the other is obtaining fast convergence speed. As heuristic algorithm and swarm intelligence algorithm, both particle swarm optimization and genetic algorithm are widely used in vehicle path planning because of their favorable search performance. This paper analyzes the characteristics and the same and different points of two algorithms as well as making simulation experiment under the same operational environment and threat states space. The result shows that particle swarm optimization is superior to genetic algorithm in searching speed and convergence.

Abstract: The model of fire distribution for shore-based missiles in anti-surface ships assault has been researched on. The basic model of ire distribution for shore-based missiles is improved and the conception of general values is fetched in. Further more, the improved model of most damage benefit for ships is designed and emulations by way of GA show the validity of the model.

Abstract: This paper analyses the process of AWACS aircraft supporting fighter plane with the implementation of air blockade. On the basis of it, model fighter plane blockade combat, establish the hit probability model for solving fighter air regional blockade, do experiments by using this model, adopt orthogonal experiment for design to reduce complexity, get the key factors influencing fighter blockade combat by further combination of analytic method and simulation analysis, carry on importance analysis, and finally put forward that the first selection of combat forces configuration index are external probe and target designation information transmission delay.

Abstract: This paper studies air defense system kill zone, air ship missile firing mode and air ship missile launch area that impact air ship missile load matrix determine key problems, establishes air ship missile carrier array’s mathematics model, makes simulation calculation of the model, and analyzes simulation results, and gets the influence law of vehicle speed, height, target motion characteristics, deviation angle and pitching angle on attack matrix, and the results can provide reference for determining air ship missile carrier aircraft attack array.