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It is critical and foremost to come up with the corresponding security requirements first which the following implementations are based on. However, previous security requirement elicitation work based on Common Criteria (CC) rarely addresses the detailed elicitation process of threats from specific functional requirements, which thus results in the widen gap between specific functional requirements...
Wind power producers have begun to participate in electricity market in some developed countries. This paper presents a model for wind power flexible electricity contract (WPFEC) and focuses on the problem of contract scheduling. Stochastic dynamic programming approach is described for sequential decision making under uncertainty that allows wind power producers to maximize their revenue. Autoregressive...
The wind model based on Markov process was proposed to determine the best installed capacity of wind farm. Firstly, piecewise probability distribution model based on Markov process was proposed to establish the scheduling multiple state probability distribution of wind power. Secondly, the probability production simulation method using the sequential convolution and non-sequential convolution was...
When microgrid which adopt droop control operate in island mode, the difference of line impedance from the distributed generation (DG) units to the common coupling point (PCC) will lead to a poor sharing performance of reactive power, harmonic power and unbalanced power. This paper introduces a novel control method based on multiple second-order generalized integrator harmonic detection, which can...
For reinforcement learning often show slow convergence speed problem in continuous and complex tasks, this paper proposes a Q(λ) algorithm based on heuristic reward function-Q(λ)-HRF algorithm. This algorithm can extract features from the environment and get the heuristic information, which can be applied to the study by Agent in the form of reward function, which can accelerate the convergence speed...
In order to improve the robustness of the watermarking algorithm, a dual-watermarking method is proposed based on Contourlet and SVD (Singular Value Decomposition). The method adopts different methods to insert watermark into the low frequency and high frequency of the host image respectively. We make full use of the advantages of the Contourlet transform, that is a flexible multiresolution, local,...
The speech signal is continuous, however the feature vectors which are extracted from the signal are separate each other. If we can exploit the dynamics and time correlation of speech feature vectors, the performance of speech recognition and speaker recognition should be improved. Segment model is proposed for explicitly modeling the dynamic information between feature vectors and it gets a good...
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