延迟

The stability of numerical methods for the linear Volterra delay integro differential equation was studied. A sufficient condition such that the implicit block θ-methods preserved the delay-independent stability of its exact solutions was obtained.

研究了线性中立型Volterra延迟积分微分方程数值方法的稳定性，给出了块隐式θ-方法保持系统解析解不依赖于延迟的稳定性质的一个充分条件。

To investigate the affect of radiofrequency ablation on the electrical conduction of coronary sinus and interatrial conduction in patients with paroxysmal superventricular tachycardia.

①射频消融可造成经冠状窦传导的延迟及心房间电传导的延迟。

Results （1）Ninety percent of the 10 patients with unilateral peripheral lesions, showed abnormal VAT results. Lag of the horizontal phase was significantly higher in this group. Four patients had abnormal VAT high-frequency asymmetry. Lag of the vertical phase and decreased vertical gain can occur.

结果 （1）单侧外周前庭功能损害10例，主要表现为水平前庭-眼反射相位延迟及低增益， 4例伴有非对称性异常，可伴有垂直VOR相位延迟及增益异常。

A maximum likelihood method for the parameter estimation of the delay time model based on observed data is established in this paper.

介绍了基于客观数据的延迟时间模型参数极大似然估计方法，提出了应用优化理论中的单纯形法求解似然函数的算法，为延迟时间模型的参数估计问题提供了可行的解决方法。

In Chapter 3, we investigate the delay-dependent stability analysis of linear multistep methods when they are applied to the neutral delay differential equations. We state a necessary condition for any linear multistep method applied to the neutral delay differential equation to be Nτ(0)-stable.

在第3章中，考虑了中立型延迟微分方程线性多步法依赖于延迟的稳定性分析，给出了任意线性多步法是Nτ（0）-稳定的一个必要条件。

In both the cases we provide necessary conditions for any linear multistep method applied to delay differential equations and neutral delay differential equations to be τ(0)-stable and Nτ(0)-stable respectively.

针对这两种情况，分别给出了线性多步方法关于延迟微分方程τ（0）-稳定及中立型延迟微分方程Nτ（0）-稳定的必要条件。

Then, the GP〓-stability of the multistep Runge-Kutta method for neutral delay differential system with different delay terms is considered. A sufficient condition of asymptotic stability for the system is attained.

在分析中立项与非中立项具有不同延迟的中立型延迟微分系统多步Runge-Kutta方法的GP〓-稳定性时，给出了系统渐近稳定的一个充分条件。

Objective To observe delayed myelination in delayed treated Phenylketonuria with MRI and changes of IQ before and after treatment.

目的 应用磁共振成像观察苯丙酮尿症治疗延迟患儿治疗前后脑髓鞘发育延迟与智商的关系。

A new solution of this kind of problem is presented. The new method expresses the delayed observation as a function of the current state estimates, what's more, the new method accounts for the effects of the process noise that entered the system during the time interval.

本文提出了一种新的解决该问题的方法，该方法不仅把延迟的传感器数据看成是滤波后目标状态估计的函数，而且在延迟时间内引入了过程噪声，从而更加真实地反映了实际情况。

The testing method comprises the following steps:(1) collecting the electrocardio-signal, the phonocardio-signal and the pulse signal of radial artery;(2) performing analog-to-digital conversion to the three signals to form the signal oscillogram;(3) identifying and extracting the characteristic point of each signal;(4) constructing the time series RR of electrocardio-period, the electromechanical delay time series and the pulse wave propagation time series of the combined variability index;(5) testing the validity of each time series;(6) calculating the heart rate variability, the electromechanical delay variability and the pulse wave propagation time variability; and (7) calculating the combined variability index of angiocarpy AV.

本发明提供了一种心血管系统联合变异性指标的检测方法和装置，检测方法包括以下步骤：(1)采集受检测者的心电、心音、挠动脉脉搏信号；(2)对三路信号进行模拟-数字转换，形成信号波形图；(3)识别和提取三路信号各自的特征点；(4)构造联合变异性指标的心电间期时间序列RR，电机械延迟时间序列和脉搏波传播时间序列；(5)检验各时间序列的有效性；(6)计算心率变异性、电机械延迟变异性和脉搏波传播时间变异性；(7)计算心血管联合变异性指标AV。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。