查询词典 birational invariant

The advantage of the algorithms is shown by numerical simulation for linear time invariant system.

对线性时不变问题仿真分析验证了所有的算法公式的正确性和算法本身的优良特性，对时变参数、非线性问题仿真分析说明了这些算法公式的有效性。

In order to describe the random-like feature of chaotic signal, the statistical analysis method for discrete time chaos system is studied. A domain iterative algorithm for numerical estimation of the invariant probability distribution is presented, which is the foundation for the statistical analysis and processing of chaotic signal.

针对混沌系统的随机性特征，本文研究了离散时间混沌系统的统计分析方法，并给出了一种基于Frobenius-Perron算子的区间迭代算法用于混沌映射不变分布的数值求解，该方法在样本数较少时，仍可以获得不变分布的良好估计，为混沌信号进一步的统计分析和处理奠定了基础。

The concept of adiabatic approximation and adiabatic invariant came from research on obit deformation in classical mechanics.

然而一直以来，物理学界对QAT的适用性问题上都存在一些模糊的认识。

Chilean economist and philosopher Manfred Max Neef has also argued that fundamental human needs are non-hierarchical, and are ontologically universal and invariant in nature - part of the condition of being human.

同样，智利经济学家、哲学家Manfred Max Neef 认为人类基本需要并不是阶级组织性的，而是存在、普遍，并天生不变的--做为人类条件的一部份。

In one embodiment, the physical channel impulse response is considered time-invariant over the estimation period and a sufficient number of pilot symbol samples are taken so that the system is overdetermined.

在一个实施例中，物理信道脉冲响应在整个估计周期被认为是时变的，并采用足够的导引符号数，以便系统被整体确定。

In this dissertation, we develop the research work of the following three aspects based on existed work.First, using the scale-invariant property of multiscale model, i.e. Markovian among scales, a method of qth-order tree-based for multiscale representation of a class of 1-D stochastic process is presented. The multiscale stochastic model is established. The representation forms of parameter matrices, such as, the state transition matrix, the disturbance matrix, the initial state and the corresponding covariance matrix are deduced in detail. The multiscale sample paths based on distinctive order tree are presented by computer simulation.

本文在已有工作的基础上，开展了以下几个方面的研究工作： 1、根据多尺度模型尺度不变性，即利用尺度间的Markov性，给出了一类1-D随机过程基于一般q阶树的多尺度表示方法，建立了相应的多尺度动态模型，详细推导了多尺度模型中的状态转移阵、扰动阵、初始状态和相应的协方差阵，并通过计算机仿真给出了不同阶树的多尺度采样路径。

This problem of planar parametric polynomial curve of degree 3 had been discussed perfectly many years ago, making use of invariant of affine transformation.

关于三次代数多项式参数曲线的这一问题早已解决，然而所用的几何不变量方法对于非代数曲线失效。

Firstly, rotate the deflective character string to horizontal level, then project the grey image of the character string from top, and sum up the black dot pels, the value act as a grey accumulated scatter chart, which is invariant to translation and zoom in scale.

先将出现偏斜的字符串旋转至水平方向，然后将字符的灰度图像从上向下投影，对黑点像素累计求和，构成灰度累计分布图。

The existence and uniform boundedness of the global solutions of the model for sulphur dioxide oxidation in a tubular reactor with periodic flow reversal are proved by the invariant domain method.

利用不变区域方法，证明了二氧化硫催化氧化管式反应器流向变换强制操作模型整体解的存在性和一致有界性。

Moreover, the attraction of periodic solution of order one and positive invariant of system has be discussed numerically.

模型中我们还考虑了为控制疾病的流行而采取的人工免疫接种的因素。

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