反演问题

According to present research status at home and abroad, the inversion problems of structure is resolved so successful in the region of pull-apart structure, there have many theory model, whereas, some special cases should be discussed, for example synthetic and antithetic faults form during rollover deformation in the hanging wall, these subsidiary faults share part of the cumulative extension in a listric fault system and may influence predictions of the major fault geometry.

从目前国内外在构造反演这一问题的研究现状来看，在拉张构造区域，反演问题在理论上有比较多的模拟解决办法，并且应用的相当成功，不过考虑到有些特殊的情况，比如逆牵引构造所派生的次级断裂会造成反演计算结果的不准确，因此对现存的反演模型稍微做出了点修改，使之更能广泛的应用于实际的构造解释。

A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.

对本文提出的各种算法，编制了数值计算程序，并把它应用于环境水力学反问题诸多领域，包括污染物一维非恒定扩散逆过程反问题，对流扩散方程逆过程反问题，河流水质纵向弥散系数反问题，非线性Boussinesq方程反问题，河流水质多参数识别反问题，BOD-DO水质模型参数反演问题，对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题，二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。

This paper has given a thorough investigation into the application of BP neural network to gravitational density interface inversion as well as the implementation of wavelet theory in potential field decomposition and, on such a basis, analysed and evaluated the prospect of applying wavelet neural network to the inversion of gravitational and magnetic data.

重磁数据处理是地球探测与信息技术学科中重磁方法、理论在生产实践工作中的重要环节，其中反演问题和位场分离除了具备自身的作用外，两者并不是截然分开的。位场分离可以为反演问题提供更加可靠的先验信息，对提高反演精度具有一定的作用。反演问题是地球物理的核心问题。增

Finally, a new deterministic optimization method is presented. All the local optimization solutions can be determined after finite times of parameter space identification and partition procedures.

本文概述了地震波勘探反演问题的理论基础和研究进展，阐述了反演中优化问题的解决方法和面临的困难，并提出了一种确定性全局优化的新方法。

The method makes full use of all information of manifold geophysical data, avoiding the complicated calculation in linear joint inversion, and provides a new idea for the geophysical inversion about the data fusion point of view.

该方法充分利用了各种地球物理探测数据的全部信息，避免了线性反演的复杂计算；其数据融合的观点，为解决地球物理联合反演问题提供了新的思路。

From this study, the characteristics and the data/model space of the inverse problem of backscatter ionograms are investigated.

对反演问题的数据空间和模型空间以及反演问题的性态进行了较细致的研究。

However, the inverse algorithm is very robust. Through the study of inversion simulation, we believe this new approach to solve the inversion problem of magnetotelluric sounding will bring new hope and it worth in-depth studying.

然而该反演方法是非常稳健的，通过反演模拟研究，我们认为这种全新的反演方法给大地电磁测深反演问题的解决带来了新的希望，值得深入研究

During the past ten years, inversion problem of geophysical data devoted much attention to many geophysicalistes; moreover, variousinversion approaches were advanced.

近十年来，地球物理资料的反演问题引起了越来越多地球物理学家的注意，提出了各种反演方法。

Based on the optimized solution of inversion problem,the information inversion theory was taken for inversing the blasting parameters of highway tunneling.

在研究逆问题优化解的基础上，将信息化反演理论引入到隧道爆破开挖的控制参数反演问题中，建立隧道围岩控制爆破参数的反演模型。

The inversion of large perturbational parameters in elasticmedium is one of important branch of the medium parameters inversion because ofits extensive engineering application background and the breaking down of thelimited condition in traditional inversion method.

介质参数反演问题是弹性动力学反问题三大研究方面之一，弹性介质中的大扰动参数反演问题作为介质参数反演的一个重要分支，因其广泛的工程应用背景以及对传统反演方法限制条件的突破而具有重要的意义。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。