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The prior distribution information of the factor is usually available, but it is ignored by the standard optimal design. For the sake of considering the distribution information of the factors in an optimal experimental design, the following works are done: Firstly, the least expected squares estimator (abbreviated as ELSE), which can consider the distribution information of the factors, is defined...
Meta-models are widely used to facilitate the analysis and optimization of engineering systems that involve computationally expensive simulations. Kriging is widely used as a meta-modeling technique to build surrogate models. However, the assumption of a stationary covariance structure underlying Kriging does not hold in situations where the level of smoothness of a response varies significantly....
In this paper, we propose a novel Volterra-based behavioral model for RF power amplifiers implemented through using a function of system's order(p) with sum of the memory length. The parameters of this model can be extracted in digital domain since the model is analyzed based on the envelope signals. This model enables a substantial reduction in the number of parameters involved, and good accuracy.
In order to dynamically construct 3d models in the virtual modeling, a method based on OpenGL is used in this paper. By introducing how to use OpenGL to build three-dimensional geometric model and texture mapping using two-dimensional image constructed a virtual three-dimensional model described in VC++6.0. It depends on the typical geomentric texture algorithm and achieves real-time dynamic emulation...
In order to explore the role of the market confidence and reputation feedback systems in online transactions, a computational experiment model based on the multi-agent is used in this paper. By introducing experience weighted attraction learning algorithm which endows the agent with the bounded rationality, the model can represent the revolution trends in online market and analyze the effect of the...
In this paper, we examine the impact of strength-of-ties and firm age on the innovation performance by a NKC-model simulation. The simulation results show that alliance has a positive effect on innovation in the early stage of alliance formation, and that with the increase of strength-of-ties, this positive effect become silent. Meanwhile, our results suggest that established firms benefit more from...
Existing workflow-based web service composition programs lack the flexibility to choose high-quality services, and the scheduling performance degenerates as the size increases. In order to solve this problem, this article describes an optimization method of workflow-based web service composition model. In this method, we propose a computational model of service quality to calculate the service parameters...
In Phase ¢ñ, it is possible that the baseline may represent more than one distribution. This is the problem when we use control charts to detect changes in the pattern of data over time. As we known, the change-point estimation problem is to identify the real time of the change. This paper proposes a new method to distinguish the change-point. The proposed method is based on the clustering techniques,...
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