NUMERICAL MATHEMATICS A JOURNAL OF CHINESE UNIVERSITIES Volume 14 Number 3 2005

CONTENTS

Liu Jijun
Inverse Scattering Problems by Singular Source Methods 193

Fu Chuli Xiong Xiangtuan and Li Hongfang
Fourier Regularization for Determining Surface Heat Flux From Interior Observa tion Based on a Sideways Parabolic Equation 208

Li Gongsheng and Tan Yongji
A Conditional Stability for an Inverse Problem Arising in Groundwater Pollution 217

Chen Yong and Han Bo
A New Inversion Method of Time-lapse Seismic 226

Feng Guofeng and Han Bo
An Adaptive Multiscale Conjugate Gradient Method for Distributed Parameter Est imation of 2-D Wave Equation 235

Luo Xingjun and Chen Zhongying Multilevel Iteration Methods for Solving Linear Ill-posed Problems 244

Yang Xin Choulli Mourad and Cheng Jin: An Iterative BEM for the Inverse Problem of Detecting Corrosion in a Pipe 252

Wang Zewen and Xu Dinghua
Numerical Inversion of Multidimensional Laplace Transforms Using Moment Methods 267

Wei Yimin Xu Wei Qiao Sanzheng and Diao Huaian
Componentwise Condition Numbers for Generalized Matrix Inversion and Linear Least Squares 277