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Simultaneous estimation of hydraulic and transport properties were found with the minimum errors for model parameters.

本文采用该优化技术，得到了在饱和及非饱和土壤中污染物一维、二维迁移转化方程的参数，为模型的应用创造了条件。

It is known that the simultaneous estimation of speed and rotor resistance is very difficult, and it is impossible to estimate them simultaneously under the steady state based on indirect vector control.

以稳定性讨论为依据，应用自适应控制理论，融入模糊逻辑和人工神经网络的方法，提出了一种无速度传感器控制的方案，解决了影响转子磁场定向无速度传感器控制低速性能的两对难题：同时估计定子电阻与输出电压、同时估计转速与转子电阻。

Then the unified method for wideband waveform design is probed, and a frame-based method of designing optimum signals for the simultaneous estimation of time delay and scale is proposed.

提出了基于小波框架的时延和尺度联合估计的最优波形设计方法。

We present SATe (simultaneous alignment and tree estimation), an automated method to quickly and accurately estimate both DNA alignments and trees with the maximum likelihood criterion.

我们提出了SATe，一个自动进行快速准确的评估DNA比对及最大相似性标准的树的方法。

By using China's panel data of 36 industries during 1999-2006, this paper investigates the effects of foreign investments on China's wage gap between skilled labor and unskilled labor by a simultaneous estimation.

摘要本文通过内生化熟练劳动力的相对工资与相对供给，建立两方程联立估计模型，利用1999-2006年我国36个工业行业数据实证考察了外资对我国工资不平等的影响。

Two kinds of typical wavelet, namely Morlet wavelet and Chirplet wavelet are analyzed. The methods of designing optimal sonar signals for detection and time-delay estimation, for Doppler stretch estimation, and for simultaneous estimation of time delay and scale, are investigated respectively.

对Morlet小波、高斯Chirplet小波进行了波形分析；研究了最佳检测和时延估计波形、最佳多普勒估计波形、最优时延和尺度联合估计波形的设计方法；探讨了宽带信号波形设计的统一框架问题。

As to the difficulty of simultaneous estimation for frequency factors (k_0) and activation energies as well as the difficulty of many parameters to be estimated at the same time, the activation energies of the same kind catalyst and empirical activation energies are adopted, hence the number of parameters is reduced to half.

所采用的简化处理方法大大降低了参数估计难度，但引入了误差并将累积到频率因子上。

Chapter 1 discusses multiple parameters simultaneous estimation of a two-dimensional distributed parameter system; First, the distributed parameter system is transformed by applying a Laplace transform; Then by defining the objective function combined with the principle of optimal control, the problem of parameter estimate is converted into the problem of optimal control.

第一章讨论了一类二维分布参数系统的多参数同步辨识问题。首先利用Laplace变换对原系统方程进行了转换；然后结合最优控制原理定义目标泛函，将参数辨识问题转化为最优控制问题。

Ects, the covariance matrix of observation vector has special structure,and using the linear transformation for original model by idempotent matricesin the spectral decomposition of the covariance matrix, the problem of estima-tion of the covariance matrix becomes simultaneous estimation of all the distincteigenvalues of it.

在带有随机回归系数的一般线性模型中，首次提出了随机回归系数和参数的Minimax估计问题，分别在齐次线性估计类和一切估计类中研究了一个线性估计的Minimax性。

An algorithm base on Pro-ESPRIT and MR-ESPRIT of simultaneous estimation of frequency and 2D AOA with spatial-temporal sub-Nyquist sampling is proposed. The frequency estimation algorithm is suit for arbitrary geometry of antenna array.

提出了基于时空欠采样条件、Pro-ESPRIT方法和多分辨意义下的宽频段入射信号频率和二维到达角估计方法，并指出，其中的频率估计算法适用于任意几何结构阵列。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失