Yan-hai Chen

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The selection of proper macroinvertebrate metrics was a key step in the successful construction of benthic-index of biotic integrity (B-IBI). In the context of lack of sufficient reference sites, the responses of biotic metrics to the stress gradients have been proved crucially important in metrics selection. We explored this using a data set (twenty-two(More)
This paper presents a new method of multi-rate system identification based on improved particle swarm optimization (PSO). The paper discusses multi-rate system transformation based on the lifting technique. The coefficients of multi-rate systems with the state-space model are estimated using least square estimation technique and improved PSO techniques,(More)
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