The Institute of Physics ( IOP ) по журналам "Inverse Problems"
Отображаемые элементы 120 из 1273

(19930401)A systematic method for getting (1+1)dimensional integrable Hamiltonian systems reduced from the KP hierarchy is proposed. Namely, the auxiliary linear problems of the KP hierarchy are (1+1)dimensional integrable Hamiltonian ...

(19900601)The author extends earlier results on spectral theory of the 2sphere Schrodinger operators H= Delta +V with even zonal potentials to a more difficult oddpotential case. He establishes local spectral rigidity for odd ...

(20001001)In this paper we address one of the most challenging problems of electromagnetic (EM) geophysical methods: threedimensional (3D) inversion of EM data over inhomogeneous geological formations. The difficulties in the ...

(19980201)This paper considers the problem of vector tomography on an arbitrary bounded domain in three dimensions. The probe transform of a vector field is the inner product of the Radon transform of a vector field with a unit ...

(19971001)A fundamental inversion problem for the magnetic force microscopy (MFM) of a semiinfinite linear magnetic material is formulated. Magnetostatic conditions are assumed so that a magnetic scalar potential can be employed. ...

(19901201)The author derives an estimatemaximize formulation of a Bayesian superresolution algorithm for reconstructing scattering cross sections from coherent images. He generalizes this result to obtain an 'autofocus/superresolution' ...

(19991201)This paper extends previous work on the Bayesian foundations of the biomagnetic inverse problem. It derives the a posteriori source current probability distribution given a prior source current probability distribution, a ...

(19950401)This paper discusses the solution of a wave equation in a region above the x3=0 plane, with given Cauchytype boundary conditions in the x3direction. Two problems are treated, one, where the given Dirichlet and Neumann ...

(19870801)A necessary and sufficient condition is given for the given function A( theta , theta ,k) to be the scattering amplitude corresponding to a potential from a class Q and a condition is given for Newton's equation to have ...

(19941201)A simple algebraic mapping, when applied to linear PDES, yields 'Cintegrable' nonlinear PDES. Some examples are exhibited.

(19850801)A class of integrable dynamical systems is exhibited. A system of n coupled nonlinear ordinary differential equations for n dependent variables.

(19971201)This paper describes a simple algorithm for reconstructing the complex index of refraction of a bounded object immersed in a known background from a knowledge of how the object scatters known incident radiation. The method ...

(19990801)In this paper we consider the a posteriori parameter choice strategy proposed by Scherzer et al in 1993 for the Tikhonov regularization of nonlinear illposed problems and obtain some results on the convergence and convergence ...

(19981001)For iterative methods for wellposed problems, invariance properties have been used to provide a unified framework for convergence analysis. We carry over this approach to iterative methods for nonlinear illposed problems ...

(19850801)For the SturmLiouville operator L=Lp:y mod to y"+py one seeks to reconstruct the coefficient p from knowledge of the sequence of eigenfrequencies ( lambda j with Lyj= lambda jyj for some yj not=0). An implementable ...

(19850201)It has recently been shown that the physical properties of a layered ocean floor may, in principle, be determined from an analysis of the resonances in frequency, or in the angle of incidence, which appear in bottomreflected ...

(20001201)This paper considers the determination, from scattered sound, of a distributed inhomogeneity in a shallow, twodimensional, ocean with a thin ice cap. Assuming that we know the acoustic properties of the ice cap, we determine ...

(19900401)The authors extend and apply the inverse scattering techniques of Colton and Monk (1987) to twodimensional bodies with sharp corners and concavities. In particular they study how the functional representation of the unknown ...

(19910601)Acoustic scattering allows the authors to obtain the values of parameters which characterize the solid layers of a plane structure composed of three layers: a first plastic elastic layer, a thin water layer and a second ...

(20001201)The inverse problem of inferring information about the intervening ocean can be solved by a comparison of the computed arrival times and measured patterns of arrivals. This approach is very effective if in the process of ...
Отображаемые элементы 120 из 1273