This paper proposes a robust adaptive filter based on the exponent sin cost to improve the capability against Gaussian or multiple types of non-Gaussian noises of the adaptive filtering algorithm when dealing with tim...This paper proposes a robust adaptive filter based on the exponent sin cost to improve the capability against Gaussian or multiple types of non-Gaussian noises of the adaptive filtering algorithm when dealing with time-varying/time-invariant linear systems function exponent sin(ExpSin).Then a variable step-size(VSS)-ExpSin algorithm is extended further.Besides,the stepsize,the convergence,and the steady-state performance of the proposed algorithm are validated experimentally.The Monte Carlo simulation results of linear system identification illustrate the principle and efficiency of this proposed adaptive filtering algorithm.Results suggest that the proposed adaptive filtering algorithm has superior performance when estimating the unknown linear systems under multiple-types measurement noises.展开更多
目的:调查海淀区新型冠状病毒(以下简称"新冠病毒")核酸检测实验室污染情况,并规范出现污染后的处置措施。方法:对海淀区34家新冠病毒核酸检测实验室内物表进行涂抹采样,运用real time RT-PCR方法进行新冠病毒核酸检测。结果...目的:调查海淀区新型冠状病毒(以下简称"新冠病毒")核酸检测实验室污染情况,并规范出现污染后的处置措施。方法:对海淀区34家新冠病毒核酸检测实验室内物表进行涂抹采样,运用real time RT-PCR方法进行新冠病毒核酸检测。结果:海淀区34家新冠病毒核酸检测实验室采集的510件样本中,有1件新冠病毒核酸检测结果为阳性,推测污染原因为八连管管盖崩开导致核酸扩增仪内部被阳性对照扩增后的基因片段污染。发现污染后对该实验室采取了检测结果追溯、清洁消毒、设备耗材更换、人员培训、消毒效果验证及盲样考核验收等措施,可以有效去除实验室内核酸污染。结论:海淀区新冠病毒核酸检测实验室生物安全风险总体可控,通过人员培训、制度撰写、消毒清洁效果验证等措施可以提高检测机构处置实验室污染的能力。建议所有实验室加强生物安全管理,并定期开展实验室污染监测。展开更多
文摘This paper proposes a robust adaptive filter based on the exponent sin cost to improve the capability against Gaussian or multiple types of non-Gaussian noises of the adaptive filtering algorithm when dealing with time-varying/time-invariant linear systems function exponent sin(ExpSin).Then a variable step-size(VSS)-ExpSin algorithm is extended further.Besides,the stepsize,the convergence,and the steady-state performance of the proposed algorithm are validated experimentally.The Monte Carlo simulation results of linear system identification illustrate the principle and efficiency of this proposed adaptive filtering algorithm.Results suggest that the proposed adaptive filtering algorithm has superior performance when estimating the unknown linear systems under multiple-types measurement noises.
文摘目的:调查海淀区新型冠状病毒(以下简称"新冠病毒")核酸检测实验室污染情况,并规范出现污染后的处置措施。方法:对海淀区34家新冠病毒核酸检测实验室内物表进行涂抹采样,运用real time RT-PCR方法进行新冠病毒核酸检测。结果:海淀区34家新冠病毒核酸检测实验室采集的510件样本中,有1件新冠病毒核酸检测结果为阳性,推测污染原因为八连管管盖崩开导致核酸扩增仪内部被阳性对照扩增后的基因片段污染。发现污染后对该实验室采取了检测结果追溯、清洁消毒、设备耗材更换、人员培训、消毒效果验证及盲样考核验收等措施,可以有效去除实验室内核酸污染。结论:海淀区新冠病毒核酸检测实验室生物安全风险总体可控,通过人员培训、制度撰写、消毒清洁效果验证等措施可以提高检测机构处置实验室污染的能力。建议所有实验室加强生物安全管理,并定期开展实验室污染监测。
