Volume 02

Date of Online Publication: 27/10/2007 Keywords: Leontief model, input-output analysis, consumption matrix, M- matrix, inverse problem, inexact data, constrained total least squares, projected gradient Authors: S. Ragni, Moody T. Chu, F. Diele, C. Marangi Pages: 139-156 The Leontief model, originally developed for describing an economic system in terms of mutually interrelated and structurally conditioned simultaneous […]

Date of Online Publication: 14/04/2007 Keywords: Cell nuclei, Computational stochastic methods, Gibbs point processes, Lattice processes, Dislocations of crystals, Pseudolikelihood, Spatial arrangement, Strauss process Authors: J. Mateu Pages: 79-102 Data showing spatial structure often arise in many applied scientific fields in form of points spatially distributed within a planar region. The basic methodology for analyzing

Date of Online Publication: 27/10/2007 Keywords: Singular perturbation problem; asymptotic analysis; finite difference methods Authors: Kailash C. Patidar and Albert Shikongo Pages: 193-207 This paper deals with the design and implementation of some appropriate numerical methods for a model singularly perturbed differential equation. To adapt the local abrupt changes of the solution, we consider a

Date of Online Publication: 27/10/2007 Keywords: Collision, Contact-Force Model, Granular Material, Viscoelastic Particle Authors: M.H. Bordbar, T. Hypp�nen Pages: 115-128 An accurate new contact force model is proposed for describing the grain collision process. The linear and nonlinear contact force models and normal coefficient of restitution in different impact velocities has been studied. A new

Date of Online Publication: 27/10/2007 Keywords: Second-order Numerical Scheme for Singularly Perturbed, Singular perturbation problems, Robin boundary conditions, cubic spline, piecewise-uniform Shishkin mesh, error analysis. Authors: Srinivasan Natesan and Rajesh K. Bawa Pages: 177-192 In this article, we consider singularly perturbed reaction-diffusion Robin boundary-value problems. To solve these problems we construct a numerical method which