演算法

To illustrate the feasibility of our parallel algorithm, the two examples for pseudospectral modeling of seismic wave are given: 2D acoustic and 3D elastic anisotropy modeling of wave propagation.

为了检验我们的并行算法的可行性，文中以傅利叶正演模拟技术为例，给出了声波和3D各向异性弹性波模拟的例子，并对不同版本运算效率进行了比较，证实了方法的有效性。

In this paper,the method to estimate land surface emissivityis modified when the mono-window algorithm is applied to retrieve LST and LSE from Landsat TM6 and ETM+6 data of the study area in 1989,1997,2000 and 2002.Besides,the resultant multi-temporal LST images are normalized radiometrically through relative radiometric correction based on RBF neural network.

运用改进后的单窗算法对上海中心城区1989、1997、2000和2002年四个特征年份的地表温度和地表发射率进行定量反演，并运用RBF神经网络建立多时相遥感影像的相对辐射校正模型，对不同时相影像进行标准化处理。

In order to select optimal grid and good computation efficiency to recover the entire signal, aiming at the Ricker wavelet commonly used in forward modeling, we analyzed the alias and signal restoration problem in finite-difference method based on spatial sampling theorem and seismic wave traveling regulation in media with different velocity, to derive quantitative relationship among the modeling grid size, minimum velocity of model layer, and recovered main frequency of wavelet.

为了选择最佳的网格尺寸以及以最小的计算量完整地恢复出信号，针对地震波场正演模拟中经常使用的Ricker子波，根据空间采样定理和地震波在不同速度介质中的传播规律，分析了有限差分算法中的假频和信号恢复问题，推导出模拟网格尺寸、模型地层的最小速度和能够恢复的子波主频之间的近似定量关系，并用数值算例验证了这一关系。

Firstly, the inversion of the ground motion with the unknown parameters and limited measurements was studied by the substructural identification, and the least-square algorithm of unknown input was built. Secondly, based on the estimated input, structural parameter down to the element level was identified in time domain by extended Kalman filter algorithm. Several cases of a 6-story frame structure are numerically investigated.

首先，使用子结构识别技术，研究了未知参数、观测不完整条件下的地震动输入反演问题，建立了未知输入的最小二乘估计算法；其次，在估计地震动输入的基础上，使用广义Kalman滤波器方法，识别全部单元结构参数。

The temporal characteristics of land surface temperature show that the underlaying surface in arid suburbs is mainly the deserts, and the temperature is high in the daytime.

利用MODIS热红外数据，在完成几何校正、辐射定标、大气校正、云检测等数据预处理后，利用分裂窗算法反演得到乌鲁木齐2000-2005年1，4，7，10月的地表温度空间数据。

The embedded hardware design which base on the high speed ARM core device and the selection of key system components were also presented.

并具体介绍了最小平方卷积反演对挠度信号进行恢复的数据算法原理和其快速嵌入式程序软件的实现。

The effectiveness of the method is verified by results of modeling, processing and interpreting practical cross-hole electromagnetic data acquired from two boreholes in an oil field of east China, so that the method could be as a foundation of inverting cross-hole electromagnetic data.

通过对中国东部某油田2口井的实测井间电磁数据的模拟与处理解释，验证了该算法的有效性，为井间电磁数据的反演解释奠定了基础。

As a whole, the result of wave impedances inversion based on genetic algorithms is more satisfactory.

总体上，基于遗传算法的波阻抗反演结果是令人满足的。

In dealing with the upper singularity point of Abel inversion transfer, a zenith compensation term is introduced, which makes simple and stable in Abel inversion process.

在Abel积分变换的上奇点的处理中，推导了大气折射指数反演的天顶补偿项，使Abel积分变换的算法更简单而且更稳定。

Genetic algorithm Inversion of component temperature Multi_angle remote sensing

遗传算法；组分温度反演；多角度遥感

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。