未知

2 To the general case of the higher order linear discrete-time systems with the unknown control directions and model parameters.

将文献[1，2]的研究结果推广到具有未知控制方向和模型参数的高阶线性离散时间系统，研究一般线性系统的间接自适应调节。

Base vectors are selected for formulating the nonlinear mapping. An approximate explicit expression is formed by using the Nystrm method for nonlinear mapping which is not available originally. The data in the nonlinear input space is mapped into some linear feature subspace and fisher linear discriminant analysis is computed for the mapped data.

首先提取基向量；然后采用Nystrm方法，以基向量为训练样本，将形式未知的非线性映射近似表达为已知形式的非线性映射，这种近似的非线性映射将变量由非线性的输入空间转换到线性的特征子空间；最后对映射数据进行线性Fisher判别分析。

In this paper,a new identification technique which uses cyclic pulse signals with different amplitudes as input signals to identify the unknown parameters of nonlinear gain and pulse responses of linear subsystem of wiener system with known structure,is presented,and estimates obtained are strong consistency.

本文针对带有已知结构的非线性Wiener系统，提出了利用不同幅值的周期脉冲信号辨识非线性增益未知参数和脉冲响应序列的新方法，获得了强一致性估计，数字仿真研究说明了该方法的有效性和实用性。

When the output control is considered, it is assumed that the nonlinear term satisfies the Lipschitz condition with an uncertain Lipschitz constant.

在采用输出反馈控制时，假设非线性项满足李普希兹条件，但李普希兹常数未知。

This paper investigated the adaptive impulsive synchronization for a class of non-autonomous chaotic systems with unknown Lipschitz constant.

研究了一类具有未知Lipschitz常数的非自治混沌系统的自适应脉冲同步问题。

For the difficulty of estimating the invariant set and Lipschitz constant of nonlinear link during the design of the synchronization controller for the nonlinear systems, an idea of getting Lipschitz constant adaptively estimated is presented.

针对非线性系统同步控制设计中，估计系统不变集和非线性环节李普希茨常数所存在的困难，提出在李普希茨常数未知时对其进行自适应估计的思路，并在此基础上用李雅普洛夫方法得到两个混沌鲁里叶系统同步的控制器。

The nonlinear items only satisfy the local Lipschitz condition, but not the uniformly Lipschitz condition. The step function is applied to the approximate controllability problem of the corresponding linear system.

这类非线性系统中的非线性项只满足局部Lipschitz条件，于是采用了阶梯函数的方法，对于热传导方程的逼近能控性进行了讨论，得到了线性系统的逼近能控性，并给出了控制的显式表达，而在文献[103]中控制的具体求法是未知的。

According to the localization principle of the DV-Hop algorithm, this paper proposes three improvements including the estimation of average single hop distance, the calculation of distance between unknown nodes and reference nodes and the estimation of node positions. These improvements can be used independently or jointly to replace the corresponding steps in the DV-Hop algorithm. The localization performances are analyzed in theory and with simulations.

该文根据DV-Hop算法定位过程，在平均每跳距离估计、未知节点到各参考节点之间距离的计算和节点位置估计方法等3个方面进行了改进，分析和仿真了不同改进措施和综合改进的定位性能。

They have provided a lodestar to every succeeding generation – guiding us, galvanizing us, and enabling us to move forward in the face of uncertainty.

他们为后来的每一代人指引了方向—引导着我们，激励着我们，在我们面临未知的时候让我们奋勇向前。

For the first time, a checking point method is proposed by using equivalent logarithmic normal probability distribution, and its application is studied for calculating durability reliability of reinforced concrete structures.

根据在役结构的特点，提出了用对数正态分布拟合未知概型的随机变量的方法；首次提出了当量对数正态型概率分布的验算点法，并研究了其在钢筋混凝土结构耐久性可靠度中的应用；对功能函数非线性引起的误差进行了深入的研究，提出了误差判别方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷