基于EEMD、相关系数、排列熵和小波阈值去噪的新型水下声学信号去噪方法

The complexities of the marine environment and the unique characteristics of underwater channels pose challenges in obtaining reliable signals underwater,necessitating the filtration of underwater acoustic noise.Herein,an underwater acoustic signal denoising method based on ensemble empirical mode decomposition(EEMD),correlation coefficient(CC),permutation entropy(PE),and wavelet threshold denoising(WTD)is proposed.Furthermore,simulation experiments are conducted using simulated and real underwater acoustic data.The experimental results reveal that the proposed denoising method outperforms other previous methods in terms of signal-to-noise ratio,root mean square error,and CC.The proposed method eliminates noise and retains valuable information in the signal.

中医体质学与免疫学的相关性研究

中医体质学是以中医理论为指导,研究人类体质特征、体质类型的生理病理特点,和阐述人体体质与疾病、防治及养生及分析疾病反应状态、病变性质、发展趋向的学科,是一门从宏观辨证研究人体控制系统平衡与失衡及调控,与传统科学相结合的交叉性、应用性学科。免疫学是从微观、定量研究疾病本质,机体的防御、自稳和免疫监视功能的正常与否及其对疾病发生、类别、治疗关系的学科。我们旨在研究中医体质学与免疫学内在规律的本质,期冀努力探索更多免疫调节中草药改善机体免疫状态,为中西医结合理论在实践基础上的结合产生质的飞跃。