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## Search

Now showing items 1-10 of 32

#### A finite element splitting extrapolation for second order hyperbolic equations

(Siam Publications, 2009)

Splitting extrapolation is an efficient technique for solving large scale scientific and engineering problems in parallel. This article discusses a finite element splitting extrapolation for second order hyperbolic equations ...

#### A uniqueness result for p-Monotone viscosity solutions of Hamilton-Jacobi equations in bounded domains

(Siam Publications, 2009)

We consider a class of Hamilton-Jacobi equations H(x, Du(x)) - 0 with no u-dependence and with continuity properties consistent with recent applications in queueing theory. Continuous viscosity solutions are considered in ...

#### Sufficient conditions and perfect duality in nonconvex minimization with inequality constraints

(American Institute of Mathematical Sciences, 2005-02)

The paper studies forced surface waves on an incompressible, inviscid fluid in a two-dimensional channel with a small negative or oscillatory bump on a rigid flat bottom. Such wave motions are determined by a non-dimensional ...

#### Transfer function approach to output specification in certain linear distributed parameter systems

(American Institute of Mathematical Sciences, 2003)

We carry out error estimation of a class of immersed finite element (IFE) methods for elliptic interface problems with both perfect and imperfect interface jump conditions. A key feature of these methods is that their ...

#### The PMU placement problem

(Siam Publications, 2005)

PMU placement problem is an optimization problem abstracted from an approach to supervising an electrical power system. The power system is modeled as a graph, and adequate supervision of the system requires that the voltage ...

#### A hybrid collocation method for volterra integral equations with weakly singular kernels

(Siam Publications, 2003)

The commonly used graded piecewise polynomial collocation method for weakly singular Volterra integral equations may cause serious round-off error problems due to its use of extremely nonuniform partitions and the sensitivity ...

#### Glass transition seen through asymptotic expansions

(Siam Publications, 2011)

Soft glassy materials exhibit the so-called glassy transition, which means that the behavior of the model at a low shear rate changes when a certain parameter (which we call the glass parameter) crosses a critical value. ...

#### Model reduction of descriptor systems by interpolatory projection methods

(Siam Publications, 2013)

In this paper, we investigate an interpolatory projection framework for model reduction of descriptor systems. With a simple numerical example, we first illustrate that directly applying the subspace conditions from the ...

#### A regularized Gauss-Newton trust region approach to imaging in diffuse optical tomography

(Siam Publications, 2011)

We present a new algorithm for the solution of nonlinear least squares problems arising from parameterized imaging problems with diffuse optical tomographic data [D. Boas et al., IEEE Signal Process. Mag., 18 (2001), pp. ...

#### A general convergence analysis of some Newton-type methods for nonlinear inverse problems

(Siam Publications, 2011)

We consider the methods x(n+1)(delta) - x(n)(delta) - g(alpha n) (F'(x(n)(delta))* F'(x(n)(delta)))F'(x(n)(delta))*(F(x(n)(delta)) - y(delta)) for solving nonlinear ill-posed inverse problems F(x) = y using the only available ...