【摘 要】
:
An iterative/recursive algorithm is studied for recovering unknown sources of acoustic field with multi-frequency measurement data.Under additional regularity assumptions on source functions,the first
【机 构】
:
School of Mathematical Sci.,Fudan Univ. Zhejiang
论文部分内容阅读
An iterative/recursive algorithm is studied for recovering unknown sources of acoustic field with multi-frequency measurement data.Under additional regularity assumptions on source functions,the first convergence result towards multi-frequency inverse source problems is obtained by assuming the background medium is homogeneous and the measurement data is noise-free.
其他文献
Characterizing labile metal distribution and mobility in sediments is crucial for understanding their pollution characters in lakes,while in situ,high-resolution data was scare.Diffusive gradient in t
稀土、化肥、电镀和印刷等行业的产品生产过程中会产生大量的氯化铵废水,这类废水直接排放会对环境和人体造成巨大危害[1].目前,用于氯化铵废水处理主要有生物法、物化法、折点氯化法、磷酸铵镁沉淀法和电渗析等,但这些方法还存在处理成本高、难以达标、有副产物或高浓废液产生,可造成二次污染.双极膜电渗析(Bipolar membrane electrodialysis,BMED)是一项新的电渗析技术,其原理是
有机磷酸酯(organophosphate esters,OPEs)阻燃剂由于阻燃效果好、生产成本低等优点使用量逐年增加[1].目前,已有研究表明OPEs广泛存在于水体、沉积物、室内空气和灰尘等各种环境介质中,以及鱼类和人体血液等生物介质中[2],并且存在于环境中的OPEs会对人体健康产生负面影响.鉴于有机磷酸酯在环境、生物体和人体中较高程度的降解代谢及普遍性,准确分析环境样品中有机磷酸酯代谢物对
Development of highly-efficient and cost-effective water treatment techniques is critical to tackle global water crisis and membrane processes are promising among state-of-the-art water treatment tech
According to the a posteriori error estimator,a bubble placement method and constrained BLMG strategy are applied to solve elliptic problem with discontinuous coefficients which has strong singularity
The solutions to the classical Hele-Shaw problem are discretized in space by means of a modified charge simulation method combined with the discrete asymptotic uniform distribution method,and then a s
We consider a non self-adjoint fourth eigenvlaue problem and use the Discontinuous Galerkin(DG)methods to compute it.For the fourth order problem,DG methods are competitive since they have less degree
Nuclear measurement techniques have played a relevant role in dealing with problems as hydrocarbon exploration.The key to understanding the responses of the related logging tools are gamma rays and ne
We consider a mathematical model for large deformation in viscoelastic solids for the problem of salt migration in geomechanics.We propose a Lagrangian formulation relative to a finitely deformed stat
This study presents a numerical algorithm for solving a class of integro-differential equations of the first kind.This class of equations consists of an integro-differential term containing an Abel-ty