1) improved Z-transform
修改Z-变换
1.
A sufficient and necessary condition for the oscillation of time-lag differential equations with piecewise constant argument has been presented under the conditions of multi-time-delay and piecewise constant arguments through improved Z-transform: time-lag differential equations are oscillatory if and only if their characteristic equations have no roots in(0,1).
应用修改Z-变换,得到了时滞微分方程的特征方程,并且给出了时滞微分方程振动的充分必要条件,即时滞微分方程是振动当且仅当它的特征方程在(0,1)内没有根。
2) modified z transformation
改进z变换
3) Z-transformation
Z变换
1.
A method of calculating zoom spectrum based on Z-transformation, called C-ZOOM is introduced.
本文介绍一种基于Z变换的频谱细化方法—C-ZOOM算法。
2.
Third,the correlations betwen digital signal spectrum and Z-transformation,Discrete Fourier transformation.
本文讨论了数字信号频谱的物理意义，并研究了数字信号频谱与它恢复函数频谱间的关系，数字信号频谱与Z变换、离散博里叶交换间的关系。
3.
From dynamic customer demand, supply chain is composed of supplier and retailer, combining P-control strategy with z-transformation, a dynamic model is given, building model of traditional, EPOS, VMI supply chain respectively.
研究在动态顾客需求下,生产商和零售商所组成的供应链系统,采用P-控制策略和z变换相结合,给出一个动态模型,并分别对传统、EPOS和VMI供应链进行建模,通过仿真,分析和比较顾客需求信息对三种供应链性能影响的效果。
4) Z transform
Z变换
1.
Research on FDTD calculation of dispersive medium using Z transform;
Z变换应用于色散媒质FDTD计算的研究
2.
Method of calculating matrix A~n by Z transform;
用逆Z变换求A~n的一种方法
3.
Restoration of uniform rotation motion blurred images based on Z transformation;
基于Z变换匀速旋转运动模糊图像的快速恢复
5) chirp-z transform
chirp-z变换
1.
Suppression of mono-frequency interference on seismic record by Chirp-Z transform spectrum analysis
Chirp-Z变换谱分析压制地震记录单频干扰
2.
In order to enhance the measuring accuracy,the Chirp-Z transform based on FFT algorithm is adopted to extract the precise frequency from the vortex signals.
该设计采用基于FFT的Chirp-Z变换算法,实现对涡街信号频率的精确提取,从而提高了流量计的测量精度,为新一代数字式智能涡街流量计设计提供了一种可行方案。
3.
It introduces the influence of different window functions on the transform and a time-domain measurement algorithm bases on Chirp-Z transform.
文中给出上述方法理论依据和实现步骤,介绍了不同窗函数对变换结果的影响和基于Chirp-Z变换的时域测量算法,推导出时域选通门的数学表达式,解释了理论结果出现失真的原因。
6) Z-transform
Z变换
1.
Design of digital trap by Z-transform and pole-zero plot;
借助Z变换和零极点设计数字陷波器
2.
Analysis of propagation and scattering from double-negative meta-materials based on Z-transform FDTD
基于Z变换法对双负媒质传播散射的FDTD分析
3.
FDTD analysis of the flat slab lens imaging based on Z-transform
基于Z变换在平板透镜成像中的FDTD分析
补充资料：Radon变换和逆Radon变换
Radon变换和逆Radon变换
X线物理学术语。CT重建图像成像的主要理论依据之一。1917年澳大利亚数学家Radon首先论证了通过物体某一平面的投影重建物体该平面两维空间分布的公式。他的公式要求获得沿该平面所有可能的直线的全部投影(无限集合)。所获得的投影集称为Radon变换。由Radon变换进行重建图像的操作则称为逆Radon变换。Radon变换和逆Radon变换对CT成像的意义在于，它从数学原理上证实了通过物体某一断层层面“沿直线衰减分布的投影”重建该层面单位体积，即体素的线性衰减系数两维空间分布的可能性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条