针对经典卡尔曼滤波器要求组合导航系统的动态模型和观测模型的噪声统计特性已知,而组合导航系统的噪声具有非先验性的问题,利用超闭球小脑神经网络(Hyperball Cerebellar Model Articulation Controller,HCMAC)良好的非线性逼近能力、...针对经典卡尔曼滤波器要求组合导航系统的动态模型和观测模型的噪声统计特性已知,而组合导航系统的噪声具有非先验性的问题,利用超闭球小脑神经网络(Hyperball Cerebellar Model Articulation Controller,HCMAC)良好的非线性逼近能力、泛化能力和自学习能力,设计HCMAC辅助卡尔曼滤波器,并应用于组合导航系统。仿真试验结果表明,该辅助算法与经典卡尔曼滤波算法相比较,精度提高了2倍,收敛时间缩短近200s,且有效地克服了传统神经网络学习速度慢、泛化能力弱的缺点,使系统具有自适应能力以应付动态环境的扰动,增强了组合导航系统的鲁棒性。展开更多
The effect of deuteron breakup in d-nucleus reaction is treated with the continuum discretized coupled channels （CDCC） approach, and the effects on the total reaction cross sections and elastic scattering angular di...The effect of deuteron breakup in d-nucleus reaction is treated with the continuum discretized coupled channels （CDCC） approach, and the effects on the total reaction cross sections and elastic scattering angular distributions are studied by comparing the calculations of CDCC and spherical optical model with our global deuteron optical potential [Phys. Rev. C 73 （2006） 054605] below 200 MeV, for target nuclei ranging from ^12C to ^208Pb. The contributions from the closed channels to the total reaction and breakup cross sections, and angular distributions of elastic scattering are also seriously discussed.展开更多
Drug-coated balloon has been developed as an alternative to drug-eluting stents for in-stent restenosis but the performance of drug infusion balloon in such setting has not been previously described. We present a case...Drug-coated balloon has been developed as an alternative to drug-eluting stents for in-stent restenosis but the performance of drug infusion balloon in such setting has not been previously described. We present a case of particularly aggressive in-stent restenosis after drug eluting stent implantation treated with a new kind of drug infusion balloon developed in order to overcome the impossibility to inflate regular drug-coated balloon for several dilatation.展开更多
文摘针对经典卡尔曼滤波器要求组合导航系统的动态模型和观测模型的噪声统计特性已知,而组合导航系统的噪声具有非先验性的问题,利用超闭球小脑神经网络(Hyperball Cerebellar Model Articulation Controller,HCMAC)良好的非线性逼近能力、泛化能力和自学习能力,设计HCMAC辅助卡尔曼滤波器,并应用于组合导航系统。仿真试验结果表明,该辅助算法与经典卡尔曼滤波算法相比较,精度提高了2倍,收敛时间缩短近200s,且有效地克服了传统神经网络学习速度慢、泛化能力弱的缺点,使系统具有自适应能力以应付动态环境的扰动,增强了组合导航系统的鲁棒性。
文摘The effect of deuteron breakup in d-nucleus reaction is treated with the continuum discretized coupled channels （CDCC） approach, and the effects on the total reaction cross sections and elastic scattering angular distributions are studied by comparing the calculations of CDCC and spherical optical model with our global deuteron optical potential [Phys. Rev. C 73 （2006） 054605] below 200 MeV, for target nuclei ranging from ^12C to ^208Pb. The contributions from the closed channels to the total reaction and breakup cross sections, and angular distributions of elastic scattering are also seriously discussed.
文摘Drug-coated balloon has been developed as an alternative to drug-eluting stents for in-stent restenosis but the performance of drug infusion balloon in such setting has not been previously described. We present a case of particularly aggressive in-stent restenosis after drug eluting stent implantation treated with a new kind of drug infusion balloon developed in order to overcome the impossibility to inflate regular drug-coated balloon for several dilatation.
