查询词典 asymptotic behavior

Third, this study completely derives and proves the asymptotic characteristics and distributions of the quasi maximum likelihood estimators and testing the theoretical performance by Monte-Carlo simulation.

三、本研究基于拟极大似然方法对一类动态空间固定效应模型的参数进行估计，系统地推导和证明了参数估计量的渐近性质和渐近分布；并基于Monte-Carlo模拟实验对估计量渐近性质进行检验。

We addressed the solutions of the collision-less plasma Vlasov-Poisson system, involving Vlasov equation coupled with Poison equation, in quasi-neutral limit. The two asymptotic-preserving particle-in-cell methods were developed and applied to a model of one-dimensional, periodic perturbation plasma.

针对准中性无碰撞等离子体的Vlasov方程及与其相耦合的求解电势的Poisson方程所组成的Vlasov-Poisson系统，提出了两种渐近保持PIC算法，并将其运用到一维周期性波动等离子体模型上。

Although this southern land only at this time in order to be able to realistically feel the winter gradually to the annual asymptotic, but when the winter carrying the North of the bagpipes, with prosody Xianlv hotels specifically catering winter when he suddenly felt this southern the earth on the winter world is not only pretty, they will be vigorous, and emotion.

虽说这南国大地只有到了这个时候才能踏踏实实地感受到冬的渐至、年的渐近，但当冬携着北国的风笛，带着冬韵的弦律悄然而至时，突然感觉到这南国大地上有冬的世界不但是俏丽的，也会是浑厚的、感慨的。

In this study, we obtained the asymptotic solutions for the first two orders of the nonlinear governing equations of cable-suspended roof under vertical seismic with Rayleigh damping.

本文给出了连续理论悬索房顶在垂直地震力作用下具有Rayleigh阻尼的非线性控制方程组的各阶渐近解。

Moreover, it indicates that the error is reduced with the increase of the exponent number of the Asymptotic Boundary Conditions. In the third chapter, based on the Laplace equation, the limitation of the variation methods are deduced from the process proving the operator to be self-adjoint and positive definite.

针对二阶渐近边界条件中含有微分项的情况，第三章研究了基于变分的有限元方法对边界条件的限制，提出对所适用的边界条件的要求，从而说明针对二阶渐近边界条件问题可以采用迦辽金有限元方法。

With rigorous analysis, the proposed control scheme guarantees the asymptotic convergences along the iteration axis.

严格的数学推导证明了该方法的收敛性。

The asymptotic covariances of different unbiased estimates are derived, which can be used for the comparison of different measurement methods and various estimations.

在连续系统离散时域模型辩识中，论文分析了采样频率对辨识精度的影响，给出了采样频率选取的经验公式。

Parameter and variable dependence of the concentrations in the lower chamber is analysed by the asymptotic solutions.

在化学工程计算中，常需引入一个孔结构参数一曲节因子，以估算组分在多孔介质内部的有效扩散系数。

In this paper, in order to investigate the sample stability of a class of white noises parametrically excited co-dimension 2 bifurcation system which possesses non-semisimple double zero eigenvalues and then to fix the first bifurcation point, the approach of asymptotic analysis of L.

为考查白噪声参激的具有非半简双零特征值的一类余维二分叉系统的样本稳定性并确定其首次分叉点的位置，本文使用L。

Then, aerodynamic parameters in different flight conditions are used to imitate the uncertainty of the system, and the digital simulation of closed-loop system designed is performed. The results show that the system can accomplish asymptotic decoupling of roll angle, sideslip angle and head-on angle for aircraft, and the system is provided with the function for restraining uncertainty in the system. This illustrates that the flight control system designed has not only good decoupling characteristic, but also better robustness.

然后用不同飞行条件下的空气动力参数变化来模拟系统的不确定性，并进行闭环系统数字仿真，结果表明，所设计的控制律不仅可实现对飞机滚转角、侧滑角、迎角等的渐近解耦控制，而且对系统不确定性具有较强的抑制作用，说明系统具有较好的解耦性和较强的鲁棒性。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48