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正演问题
相关语句
  forward problem
     1. The study of the EEG forward problem: using the BEM to solve the forward problem in the source model of the dipole and charge.
     1.脑电正问题方面的研究——用边界元法解决脑电正问题,实现了基于偶极子和点电荷源的脑电正演问题
短句来源
     The introduction of quasi-neural network BP algorithm,firstly solved the fast 3D forward problem,then the breakthrough of limitation from inversion parameter dimensionality,realized the fast convergence,so that effectively solved the inverse problem with two or multiple density interfaces.
     拟神经网络BP算法的引入,首先解决了快速三维正演问题,又突破了反演参量维数的限制,实现快速收敛,有效解决两个或多个密度界面的反演问题。
短句来源
     The introduction of quasi-neural networkBP algorithm,firstly solved the fast 3D forward problem,then the breakthrough of limitation from inversion parameter dimen-sionality,realized the fast convergence,so that effectively solved the inverse problem with two or multiple density interfaces.
     拟神经网络BP 算法的引入,首先解决了快速三维正演问题,又突破了反演参量维数的限制,实现快速收敛,有效解决两个或多个密度界面的反演问题。
     2. Forward problem: The method of generalized reflection-transmission coefficientmatrix is used to compute three-component seismograms.
     2.正演问题:透彻分析了理论地震图合成算法——广义反射透射系数矩阵法原理。
短句来源
     Xu shizhe has solved the 3-D forward problem about the influce of the undulate topography on resistivity with boundary element method.
     三维起伏地形对电阻率的影响问题,徐世浙用边界元法较好的解决了正演问题
短句来源
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  direct problem
     DIRECT PROBLEM ON THEORICAL ANALYSIS OF Vτ-INFLUENCE IN RADIOACTIVE LOGGING
     放射性测井中Vτ影响理论分析的正演问题
短句来源
     THE DIRECT PROBLEM OF SINGLE-PORE MULTIELECTRODEARRAY
     单孔多电极排列的正演问题研究
短句来源
     ALGORITHM OF DIRECT PROBLEM IN TRANSIENT ELECTROMAGNETIC SOUNDING OF ARBITRARY ANGLE
     任意角度瞬变电磁测深正演问题计算方法
短句来源
     Gaver-Stehfest inverse Laplace transform method is used to transform the direct problem of E. M. sounding to T.
     本文采用第二种方法,利用Gaver-stohfest逆拉氏变换法将频率测深正演问题转化为对应的瞬变测深正演问题
短句来源
  “正演问题”译为未确定词的双语例句
     Application of Complex Variable Functions to Solv ingSome Forward Problems of Gravity Prospecting
     复变函数在解重力勘探正演问题中的应用
短句来源
     BOUNDARY ELEMENT METHOD FOR SOLVING THE DIRECT PROBLEMS OF 2-D GRAVITY ANOMALY
     二维重力异常正演问题的边界单元解法
短句来源
     Study of Three Dimentional Magnetotelluric Forward Modeling Using Integral Equation Method
     大地电磁测深积分方程法三维正演问题的研究
短句来源
     1. Author detailedly deduced the calculation process of 3-D resistivity forward with finite element method when adopting tetrahedron element griddings, gave two calculation methods, anomalous potential method and total potential method, then discussed in the programming of 3-D resistivity finite element forward.
     1 详细推导了采用四面体单元时,有限元法求解三维电阻率正演问题的计算过程,分别给出了异常电位法和总电位法两种方法。
短句来源
     This paper presents a description of a method for calculating the apparent resistivity of electric drilling curve by means of BASIC language on a domestic minicomputer DJS—130, together with relevant flowchart of program and calculating examples.
     本文介绍应用国产DJS—130小型机及BASIC语言处理直流电测深正演问题的一种方法,给出了相应的程序框图及计算实例。
短句来源
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  forward problem
The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
      
Then, the one-dimensional crack element of B-spline wavelet on the interval (BSWI) was built to solve the forward problem.
      
Another effect of their application is a substantial decrease in the dimensions of the modeling domain and therefore in the time required to solve the forward problem.
      
Direct solution by 2-D and 3-D finite element method on forward problem of low frequency current fields in inhomogeneous media
      
The paper adopts finite element method to analyze the forward problem of low-frequency current fields in inhomogeneous media.
      
更多          
  direct problem
A three-stage axial turbine was redesigned by jointly applying S2 flow surface direct problem calculation methods and multistage local optimization methods.
      
The direct problem was solved by the combined method of integral transformations and integral equations.
      
We consider the stationary quasithree-dimensional flow of an ideal compressible fluid as applied to the direct problem of the flow in the channels of axial turbines.
      
Solution of the direct problem of the mixed flow of a conducting gas in a laval nozzle with a meridional magnetic field
      
We consider the direct problem in the theory of the axisymmetric Laval nozzle (including sonic transition) for the steady flow of an inviscid and nonheat-conducting gas of finite electrical conductivity.
      
更多          


This paper deals with the application of finite element method to the two dimensional forward calculation of geo-eletromagnetic sounding. Having examined all the methods presented in the REFERENCES, a suggestion of "taking the rectangle (unit) as primary and the triangular (unit) as supplementary" has been made for improving the methods available. By taking the underground inclinatory boundary as an example, the formula for its calculation is given.

本文讨论了有限元法在大地电磁测深二维正演问题中的应用.研究了现有文献中的方法,提出了以矩形单元为主,结合采用三角形单元的方案,作为对现有方法的改进,并以潜伏倾斜界面为例,给出了具体的计算公式.

This paper presents a description of a method for calculating the apparent resistivity of electric drilling curve by means of BASIC language on a domestic minicomputer DJS—130, together with relevant flowchart of program and calculating examples.It is recommendable to use digital filtering to calculate apparent resistivity in engineering applications. It is especially so with the minicomputer when we adopt linear filtering coefficients of large-scaled sampling intervals to calculate apparent resistivity of smaller-scaled...

This paper presents a description of a method for calculating the apparent resistivity of electric drilling curve by means of BASIC language on a domestic minicomputer DJS—130, together with relevant flowchart of program and calculating examples.It is recommendable to use digital filtering to calculate apparent resistivity in engineering applications. It is especially so with the minicomputer when we adopt linear filtering coefficients of large-scaled sampling intervals to calculate apparent resistivity of smaller-scaled sampling intervals.The advantages embodied in this method are simpler programming, faster processing and adaptibility to manual operation of the computer, hence suitable for field work.

本文介绍应用国产DJS—130小型机及BASIC语言处理直流电测深正演问题的一种方法,给出了相应的程序框图及计算实例。采用数字滤波法,应用采样间隔较大的滤波系数来计算采样间隔较小的视电阻率值是一个适于工程上应用的可取方法。采用这种方法编写程序简单,运算速度快,且便于应用计算器进行手工计算,因而适用于野外生产工作.

In this paper, a finite-difference calculus of gradient array resistivity forward problem on two-dimentional irregular topography is developed. Some recent advances of mathematics are adopted: (1) A hybrid scheme of triangular and rectangular networks is used to divide the solution domain; (2) The finite-difference forms are derived by integrating interpolation method; (3) A modification iteration with multi-level networks is used for the solution of the finite-difference equation system. These result in satisfactory...

In this paper, a finite-difference calculus of gradient array resistivity forward problem on two-dimentional irregular topography is developed. Some recent advances of mathematics are adopted: (1) A hybrid scheme of triangular and rectangular networks is used to divide the solution domain; (2) The finite-difference forms are derived by integrating interpolation method; (3) A modification iteration with multi-level networks is used for the solution of the finite-difference equation system. These result in satisfactory acuracy and velocity of computation.

本文提出了一种求解二维不平地形条件下中梯装置电阻率法正演问题的有限差分算法。引入了数学上的某些新进展:采用三角形和矩形相结合的方式对求解区作剖分,以积分插值法导出有限差分格式,用多层网格修正迭代法求解线性方程组,从而得到了比较满意的模拟精度和计算速度。

 
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